US3287384A - Ortho esters of aluminum, silicon or titanium with a metal soap of a hydroxy-fatty acid - Google Patents
Ortho esters of aluminum, silicon or titanium with a metal soap of a hydroxy-fatty acid Download PDFInfo
- Publication number
- US3287384A US3287384A US279313A US27931363A US3287384A US 3287384 A US3287384 A US 3287384A US 279313 A US279313 A US 279313A US 27931363 A US27931363 A US 27931363A US 3287384 A US3287384 A US 3287384A
- Authority
- US
- United States
- Prior art keywords
- ester
- hydroxystearate
- aluminum
- lithium
- aluminate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000344 soap Substances 0.000 title claims description 116
- 229910052782 aluminium Inorganic materials 0.000 title claims description 40
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims description 30
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims description 19
- 239000000194 fatty acid Substances 0.000 title description 90
- 150000002905 orthoesters Chemical class 0.000 title description 48
- 229910052751 metal Inorganic materials 0.000 title description 46
- 239000002184 metal Substances 0.000 title description 46
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title description 13
- 229910052710 silicon Inorganic materials 0.000 title description 13
- 229910052719 titanium Inorganic materials 0.000 title description 11
- 239000010936 titanium Substances 0.000 title description 11
- 239000010703 silicon Substances 0.000 title description 6
- LPRVNTWNHMSTPR-UHFFFAOYSA-M lithium;2-hydroxyoctadecanoate Chemical compound [Li+].CCCCCCCCCCCCCCCCC(O)C([O-])=O LPRVNTWNHMSTPR-UHFFFAOYSA-M 0.000 claims description 40
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 14
- 229910052744 lithium Inorganic materials 0.000 claims description 13
- 150000004645 aluminates Chemical class 0.000 claims description 11
- KIHBGTRZFAVZRV-UHFFFAOYSA-N 2-Hydroxyoctadecanoic acid Natural products CCCCCCCCCCCCCCCCC(O)C(O)=O KIHBGTRZFAVZRV-UHFFFAOYSA-N 0.000 claims description 9
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 8
- 229910052791 calcium Inorganic materials 0.000 claims description 8
- 239000011575 calcium Substances 0.000 claims description 8
- 229910052725 zinc Inorganic materials 0.000 claims description 8
- 239000011701 zinc Substances 0.000 claims description 8
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 7
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 5
- 229910052788 barium Inorganic materials 0.000 claims description 4
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 3
- 229910052700 potassium Inorganic materials 0.000 claims description 3
- 239000011591 potassium Substances 0.000 claims description 3
- 229910052712 strontium Inorganic materials 0.000 claims description 3
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 1
- -1 ice ORTHO ESTERS Chemical class 0.000 description 265
- 235000014113 dietary fatty acids Nutrition 0.000 description 88
- 229930195729 fatty acid Natural products 0.000 description 88
- 239000002585 base Substances 0.000 description 58
- 150000002148 esters Chemical class 0.000 description 55
- 239000000047 product Substances 0.000 description 55
- 150000004665 fatty acids Chemical class 0.000 description 48
- 150000001875 compounds Chemical class 0.000 description 41
- 235000010210 aluminium Nutrition 0.000 description 33
- 239000012530 fluid Substances 0.000 description 30
- 239000004519 grease Substances 0.000 description 28
- ULQISTXYYBZJSJ-UHFFFAOYSA-N 12-hydroxyoctadecanoic acid Chemical compound CCCCCCC(O)CCCCCCCCCCC(O)=O ULQISTXYYBZJSJ-UHFFFAOYSA-N 0.000 description 26
- 239000000203 mixture Substances 0.000 description 24
- 230000001050 lubricating effect Effects 0.000 description 23
- 229940072106 hydroxystearate Drugs 0.000 description 20
- FPLIHVCWSXLMPX-UHFFFAOYSA-M lithium 12-hydroxystearate Chemical compound [Li+].CCCCCCC(O)CCCCCCCCCCC([O-])=O FPLIHVCWSXLMPX-UHFFFAOYSA-M 0.000 description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 19
- 238000006243 chemical reaction Methods 0.000 description 18
- 150000003254 radicals Chemical class 0.000 description 16
- UIIMBOGNXHQVGW-UHFFFAOYSA-N sodium;hydron;carbonate Chemical compound [Na+].OC(O)=O UIIMBOGNXHQVGW-UHFFFAOYSA-N 0.000 description 15
- 230000008719 thickening Effects 0.000 description 15
- 239000002562 thickening agent Substances 0.000 description 15
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 14
- 239000007983 Tris buffer Substances 0.000 description 13
- 125000004432 carbon atom Chemical group C* 0.000 description 13
- 238000000034 method Methods 0.000 description 13
- 229960001078 lithium Drugs 0.000 description 12
- 239000002904 solvent Substances 0.000 description 12
- 229940114072 12-hydroxystearic acid Drugs 0.000 description 11
- WBZOJFMJTUQVES-UHFFFAOYSA-K aluminum 2-hydroxyoctadecanoate Chemical compound OC(C(=O)[O-])CCCCCCCCCCCCCCCC.[Al+3].OC(C(=O)[O-])CCCCCCCCCCCCCCCC.OC(C(=O)[O-])CCCCCCCCCCCCCCCC WBZOJFMJTUQVES-UHFFFAOYSA-K 0.000 description 11
- 239000000314 lubricant Substances 0.000 description 11
- 239000003921 oil Substances 0.000 description 11
- 235000019198 oils Nutrition 0.000 description 11
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 10
- WQDUMFSSJAZKTM-UHFFFAOYSA-N Sodium methoxide Chemical compound [Na+].[O-]C WQDUMFSSJAZKTM-UHFFFAOYSA-N 0.000 description 10
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 10
- 239000008096 xylene Substances 0.000 description 10
- ROADCTMRUVIXLV-UHFFFAOYSA-K aluminum;12-hydroxyoctadecanoate Chemical compound [Al+3].CCCCCCC(O)CCCCCCCCCCC([O-])=O.CCCCCCC(O)CCCCCCCCCCC([O-])=O.CCCCCCC(O)CCCCCCCCCCC([O-])=O ROADCTMRUVIXLV-UHFFFAOYSA-K 0.000 description 9
- 239000000376 reactant Substances 0.000 description 9
- 239000004215 Carbon black (E152) Substances 0.000 description 8
- 239000002253 acid Substances 0.000 description 8
- RXPKHKBYUIHIGL-UHFFFAOYSA-L calcium;12-hydroxyoctadecanoate Chemical compound [Ca+2].CCCCCCC(O)CCCCCCCCCCC([O-])=O.CCCCCCC(O)CCCCCCCCCCC([O-])=O RXPKHKBYUIHIGL-UHFFFAOYSA-L 0.000 description 8
- 150000002739 metals Chemical class 0.000 description 8
- 229920001296 polysiloxane Polymers 0.000 description 7
- 239000011541 reaction mixture Substances 0.000 description 7
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 6
- 229930195733 hydrocarbon Natural products 0.000 description 6
- 239000010687 lubricating oil Substances 0.000 description 6
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 5
- 125000003545 alkoxy group Chemical group 0.000 description 5
- 239000002480 mineral oil Substances 0.000 description 5
- 229920000728 polyester Polymers 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- YIWUKEYIRIRTPP-UHFFFAOYSA-N 2-ethylhexan-1-ol Chemical compound CCCCC(CC)CO YIWUKEYIRIRTPP-UHFFFAOYSA-N 0.000 description 4
- YYWHSFVJGXJTKD-UHFFFAOYSA-N 8-hydroxyoctadecanoic acid Chemical compound CCCCCCCCCCC(O)CCCCCCC(O)=O YYWHSFVJGXJTKD-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 4
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 4
- 150000001298 alcohols Chemical class 0.000 description 4
- 125000000217 alkyl group Chemical group 0.000 description 4
- SMZOGRDCAXLAAR-UHFFFAOYSA-N aluminium isopropoxide Chemical compound [Al+3].CC(C)[O-].CC(C)[O-].CC(C)[O-] SMZOGRDCAXLAAR-UHFFFAOYSA-N 0.000 description 4
- 150000001450 anions Chemical class 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000032050 esterification Effects 0.000 description 4
- 238000005886 esterification reaction Methods 0.000 description 4
- 125000001153 fluoro group Chemical group F* 0.000 description 4
- 150000002430 hydrocarbons Chemical class 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 150000002762 monocarboxylic acid derivatives Chemical class 0.000 description 4
- 230000003389 potentiating effect Effects 0.000 description 4
- 150000003839 salts Chemical group 0.000 description 4
- 150000004760 silicates Chemical class 0.000 description 4
- 238000005809 transesterification reaction Methods 0.000 description 4
- 150000005691 triesters Chemical class 0.000 description 4
- FPZWZCWUIYYYBU-UHFFFAOYSA-N 2-(2-ethoxyethoxy)ethyl acetate Chemical group CCOCCOCCOC(C)=O FPZWZCWUIYYYBU-UHFFFAOYSA-N 0.000 description 3
- WVDDGKGOMKODPV-UHFFFAOYSA-N Benzyl alcohol Chemical compound OCC1=CC=CC=C1 WVDDGKGOMKODPV-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- MHYBHNKCHCPWLV-UHFFFAOYSA-M lithium;2-hydroxyhexadecanoate Chemical compound [Li+].CCCCCCCCCCCCCCC(O)C([O-])=O MHYBHNKCHCPWLV-UHFFFAOYSA-M 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- IFQCEOKSFPQHTD-UHFFFAOYSA-M potassium;12-hydroxyoctadecanoate Chemical compound [K+].CCCCCCC(O)CCCCCCCCCCC([O-])=O IFQCEOKSFPQHTD-UHFFFAOYSA-M 0.000 description 3
- 229920005573 silicon-containing polymer Polymers 0.000 description 3
- FRZSCIVUSFMNBX-UHFFFAOYSA-L zinc;12-hydroxyoctadecanoate Chemical compound [Zn+2].CCCCCCC(O)CCCCCCCCCCC([O-])=O.CCCCCCC(O)CCCCCCCCCCC([O-])=O FRZSCIVUSFMNBX-UHFFFAOYSA-L 0.000 description 3
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 description 2
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 2
- 229940093475 2-ethoxyethanol Drugs 0.000 description 2
- FQTYOWQQLJKWKT-UHFFFAOYSA-N 2-hydroxy-2,3-dimethyloctanoic acid Chemical compound CCCCCC(C)C(C)(O)C(O)=O FQTYOWQQLJKWKT-UHFFFAOYSA-N 0.000 description 2
- YDZIJQXINJLRLL-UHFFFAOYSA-N 2-hydroxydodecanoic acid Chemical compound CCCCCCCCCCC(O)C(O)=O YDZIJQXINJLRLL-UHFFFAOYSA-N 0.000 description 2
- JGHSBPIZNUXPLA-UHFFFAOYSA-N 2-hydroxyhexadecanoic acid Chemical compound CCCCCCCCCCCCCCC(O)C(O)=O JGHSBPIZNUXPLA-UHFFFAOYSA-N 0.000 description 2
- JYZJYKOZGGEXSX-UHFFFAOYSA-N 2-hydroxymyristic acid Chemical compound CCCCCCCCCCCCC(O)C(O)=O JYZJYKOZGGEXSX-UHFFFAOYSA-N 0.000 description 2
- ZSBDGXGICLIJGD-UHFFFAOYSA-N 4-phenoxyphenol Chemical compound C1=CC(O)=CC=C1OC1=CC=CC=C1 ZSBDGXGICLIJGD-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- SHBUUTHKGIVMJT-UHFFFAOYSA-N Hydroxystearate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OO SHBUUTHKGIVMJT-UHFFFAOYSA-N 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Chemical compound C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 description 2
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 2
- LHCFNZQTNGWZED-UHFFFAOYSA-L barium(2+);12-hydroxyoctadecanoate Chemical compound [Ba+2].CCCCCCC(O)CCCCCCCCCCC([O-])=O.CCCCCCC(O)CCCCCCCCCCC([O-])=O LHCFNZQTNGWZED-UHFFFAOYSA-L 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- PEIVMMDUNJMOSU-UHFFFAOYSA-K bis(2-hydroxydodecanoyloxy)alumanyl 2-hydroxydodecanoate Chemical compound OC(C(=O)[O-])CCCCCCCCCC.[Al+3].OC(C(=O)[O-])CCCCCCCCCC.OC(C(=O)[O-])CCCCCCCCCC PEIVMMDUNJMOSU-UHFFFAOYSA-K 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 239000004359 castor oil Substances 0.000 description 2
- 235000019438 castor oil Nutrition 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 125000001309 chloro group Chemical group Cl* 0.000 description 2
- 150000005690 diesters Chemical class 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- VFNGKCDDZUSWLR-UHFFFAOYSA-L disulfate(2-) Chemical compound [O-]S(=O)(=O)OS([O-])(=O)=O VFNGKCDDZUSWLR-UHFFFAOYSA-L 0.000 description 2
- 125000004185 ester group Chemical group 0.000 description 2
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 2
- LHGVFZTZFXWLCP-UHFFFAOYSA-N guaiacol Chemical compound COC1=CC=CC=C1O LHGVFZTZFXWLCP-UHFFFAOYSA-N 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- WMFOQBRAJBCJND-UHFFFAOYSA-M lithium hydroxide Inorganic materials [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 235000010446 mineral oil Nutrition 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- IZUPBVBPLAPZRR-UHFFFAOYSA-N pentachlorophenol Chemical compound OC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl IZUPBVBPLAPZRR-UHFFFAOYSA-N 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 229940116351 sebacate Drugs 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-L sebacate(2-) Chemical compound [O-]C(=O)CCCCCCCCC([O-])=O CXMXRPHRNRROMY-UHFFFAOYSA-L 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
- 150000004756 silanes Chemical class 0.000 description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 2
- NTVDGBKMGBRCKB-UHFFFAOYSA-M sodium;12-hydroxyoctadecanoate Chemical compound [Na+].CCCCCCC(O)CCCCCCCCCCC([O-])=O NTVDGBKMGBRCKB-UHFFFAOYSA-M 0.000 description 2
- AISRYSZXYNNZBU-UHFFFAOYSA-L strontium;12-hydroxyoctadecanoate Chemical compound [Sr+2].CCCCCCC(O)CCCCCCCCCCC([O-])=O.CCCCCCC(O)CCCCCCCCCCC([O-])=O AISRYSZXYNNZBU-UHFFFAOYSA-L 0.000 description 2
- 150000005846 sugar alcohols Polymers 0.000 description 2
- 229910052727 yttrium Inorganic materials 0.000 description 2
- ULQHHSKTTGCVLP-UHFFFAOYSA-L zinc;2-hydroxydodecanoate Chemical compound [Zn+2].CCCCCCCCCCC(O)C([O-])=O.CCCCCCCCCCC(O)C([O-])=O ULQHHSKTTGCVLP-UHFFFAOYSA-L 0.000 description 2
- CCAXQRFVOGUUJL-UHFFFAOYSA-N 1,1,2,2,2-pentabromoethanol Chemical compound OC(Br)(Br)C(Br)(Br)Br CCAXQRFVOGUUJL-UHFFFAOYSA-N 0.000 description 1
- GNHASCMMTAHAAH-UHFFFAOYSA-N 1,1,2,2,2-pentachloroethanol Chemical compound OC(Cl)(Cl)C(Cl)(Cl)Cl GNHASCMMTAHAAH-UHFFFAOYSA-N 0.000 description 1
- WBXAHKZHOCTGLP-UHFFFAOYSA-N 1,1,2,2,3,3,3-heptafluoropropan-1-ol Chemical compound OC(F)(F)C(F)(F)C(F)(F)F WBXAHKZHOCTGLP-UHFFFAOYSA-N 0.000 description 1
- QXJCOPITNGTALI-UHFFFAOYSA-N 1,1,2,2,3,3,4,4,4-nonafluorobutan-1-ol Chemical compound OC(F)(F)C(F)(F)C(F)(F)C(F)(F)F QXJCOPITNGTALI-UHFFFAOYSA-N 0.000 description 1
- SYLAVVMQJTZMRA-UHFFFAOYSA-N 1,1,2,2,3,3,4,4,5,5,6,6,6-tridecabromohexan-1-ol Chemical compound OC(Br)(Br)C(Br)(Br)C(Br)(Br)C(Br)(Br)C(Br)(Br)C(Br)(Br)Br SYLAVVMQJTZMRA-UHFFFAOYSA-N 0.000 description 1
- ZXEIKCCCHZUUIC-UHFFFAOYSA-N 1,1,2,2,3,3,4,4,5,5,6,6,6-tridecafluorohexan-1-ol Chemical compound OC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F ZXEIKCCCHZUUIC-UHFFFAOYSA-N 0.000 description 1
- AEQBWJNIDIBATI-UHFFFAOYSA-N 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,14,14,15,15,16,16,16-tritriacontafluorohexadecan-1-ol Chemical compound OC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F AEQBWJNIDIBATI-UHFFFAOYSA-N 0.000 description 1
- COWKRCCNQSQUGJ-UHFFFAOYSA-N 1,1,2,2,3-pentafluoropropan-1-ol Chemical compound OC(F)(F)C(F)(F)CF COWKRCCNQSQUGJ-UHFFFAOYSA-N 0.000 description 1
- CSUFEOXMCRPQBB-UHFFFAOYSA-N 1,1,2,2-tetrafluoropropan-1-ol Chemical compound CC(F)(F)C(O)(F)F CSUFEOXMCRPQBB-UHFFFAOYSA-N 0.000 description 1
- DZMADYFTYWAMKS-UHFFFAOYSA-N 1,2,2,3,3,4,4,5,5-nonachlorocyclopentan-1-ol Chemical compound OC1(Cl)C(Cl)(Cl)C(Cl)(Cl)C(Cl)(Cl)C1(Cl)Cl DZMADYFTYWAMKS-UHFFFAOYSA-N 0.000 description 1
- ABEXJGCISBEISY-UHFFFAOYSA-N 1-bromo-1-chloro-2,2,2-trifluoroethanol Chemical compound OC(Cl)(Br)C(F)(F)F ABEXJGCISBEISY-UHFFFAOYSA-N 0.000 description 1
- BBMCTIGTTCKYKF-UHFFFAOYSA-N 1-heptanol Chemical group CCCCCCCO BBMCTIGTTCKYKF-UHFFFAOYSA-N 0.000 description 1
- OVYMWJFNQQOJBU-UHFFFAOYSA-N 1-octanoyloxypropan-2-yl octanoate Chemical compound CCCCCCCC(=O)OCC(C)OC(=O)CCCCCCC OVYMWJFNQQOJBU-UHFFFAOYSA-N 0.000 description 1
- 229940114069 12-hydroxystearate Drugs 0.000 description 1
- JAFZDVXJYZJAAF-UHFFFAOYSA-N 2-(2-decanoyloxyethoxy)ethyl decanoate Chemical compound CCCCCCCCCC(=O)OCCOCCOC(=O)CCCCCCCCC JAFZDVXJYZJAAF-UHFFFAOYSA-N 0.000 description 1
- YEVQZPWSVWZAOB-UHFFFAOYSA-N 2-(bromomethyl)-1-iodo-4-(trifluoromethyl)benzene Chemical compound FC(F)(F)C1=CC=C(I)C(CBr)=C1 YEVQZPWSVWZAOB-UHFFFAOYSA-N 0.000 description 1
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- OZLXDDRBXFHZNO-UHFFFAOYSA-N tetraoctyl silicate Chemical compound CCCCCCCCO[Si](OCCCCCCCC)(OCCCCCCCC)OCCCCCCCC OZLXDDRBXFHZNO-UHFFFAOYSA-N 0.000 description 1
- KCTGOQZIKPDZNK-UHFFFAOYSA-N tetrapentyl silicate Chemical compound CCCCCO[Si](OCCCCC)(OCCCCC)OCCCCC KCTGOQZIKPDZNK-UHFFFAOYSA-N 0.000 description 1
- ZUEKXCXHTXJYAR-UHFFFAOYSA-N tetrapropan-2-yl silicate Chemical compound CC(C)O[Si](OC(C)C)(OC(C)C)OC(C)C ZUEKXCXHTXJYAR-UHFFFAOYSA-N 0.000 description 1
- ZQZCOBSUOFHDEE-UHFFFAOYSA-N tetrapropyl silicate Chemical compound CCCO[Si](OCCC)(OCCC)OCCC ZQZCOBSUOFHDEE-UHFFFAOYSA-N 0.000 description 1
- JMXKSZRRTHPKDL-UHFFFAOYSA-N titanium(IV) ethoxide Substances [Ti+4].CC[O-].CC[O-].CC[O-].CC[O-] JMXKSZRRTHPKDL-UHFFFAOYSA-N 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- MYWQGROTKMBNKN-UHFFFAOYSA-N tributoxyalumane Chemical compound [Al+3].CCCC[O-].CCCC[O-].CCCC[O-] MYWQGROTKMBNKN-UHFFFAOYSA-N 0.000 description 1
- RSQXQPJKEFZBGI-UHFFFAOYSA-N triethyl hexyl silicate Chemical compound CCCCCCO[Si](OCC)(OCC)OCC RSQXQPJKEFZBGI-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- UAEJRRZPRZCUBE-UHFFFAOYSA-N trimethoxyalumane Chemical compound [Al+3].[O-]C.[O-]C.[O-]C UAEJRRZPRZCUBE-UHFFFAOYSA-N 0.000 description 1
- OBROYCQXICMORW-UHFFFAOYSA-N tripropoxyalumane Chemical compound [Al+3].CCC[O-].CCC[O-].CCC[O-] OBROYCQXICMORW-UHFFFAOYSA-N 0.000 description 1
- IOMKBWVWFHOOGM-UHFFFAOYSA-N tris(2-methoxyethoxy)alumane Chemical compound COCCO[Al](OCCOC)OCCOC IOMKBWVWFHOOGM-UHFFFAOYSA-N 0.000 description 1
- DAOVYDBYKGXFOB-UHFFFAOYSA-N tris(2-methylpropoxy)alumane Chemical compound [Al+3].CC(C)C[O-].CC(C)C[O-].CC(C)C[O-] DAOVYDBYKGXFOB-UHFFFAOYSA-N 0.000 description 1
- 150000004670 unsaturated fatty acids Chemical class 0.000 description 1
- 235000021122 unsaturated fatty acids Nutrition 0.000 description 1
- 229930195735 unsaturated hydrocarbon Natural products 0.000 description 1
- 150000003672 ureas Chemical class 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 239000003039 volatile agent Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000010698 whale oil Substances 0.000 description 1
- 125000005023 xylyl group Chemical group 0.000 description 1
Classifications
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- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F5/00—Compounds containing elements of Groups 3 or 13 of the Periodic Table
- C07F5/06—Aluminium compounds
- C07F5/069—Aluminium compounds without C-aluminium linkages
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- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/18—Natural waxes, e.g. ceresin, ozocerite, bees wax, carnauba; Degras
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- C10M2207/04—Ethers; Acetals; Ortho-esters; Ortho-carbonates
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- C10M2207/304—Complex esters, i.e. compounds containing at leasst three esterified carboxyl groups and derived from the combination of at least three different types of the following five types of compounds: monohydroxyl compounds, polyhydroxy xompounds, monocarboxylic acids, polycarboxylic acids or hydroxy carboxylic acids derived from the combination of monohydroxy compounds, dihydroxy compounds and dicarboxylic acids only and having no free hydroxy or carboxyl groups
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Definitions
- This invention relates to novel esters, to compositions containing such esters, and to methods of making and using these esters. More particularly, it relates to novel esters of hydroXy-substituted fatty acid soaps, to methods of making such esters, to lubricating compositions containing such esters, and to methods of thickening lubricating compositions employing such esters.
- This application is a division of my copending application Serial No. 81,955, filed January 11, 1961, now Patent No. 3,158,573.
- soaps such as the lithium and aluminum soaps of hydroxy-substituted fatty acids like 12-hydroXy-stearic acid are useful in lubricants as grease thickeners.
- these products have limited thickening power and are expensive. It has also been observed that such soaps sometimes exhibit a tendency to cause instability of oleaginous lubricating base fluids comprising hydrolyzable synthetic lubricants such as ester fluids.
- An object of this invention is to provide novel chemical compounds.
- a particular object of this invention is to provide novel chemical compounds particularly adapted for use as grease thickeners.
- a further particular object of this invention is to provide novel lubricating grease compositions comprising an oleaginous base fluid thickened to a grease consistency.
- Another object is to provide a novel method of thickening lubricating base fluids to grease consistency.
- Another object is to provide lubricating grease compositions of increased stability comprising a hydrolyzable synthetic ester oleaginous base lubricating fluid.
- Another object is to provide novel grease thickeners of enhanced thickening power.
- Another object is to provide a novel method of thickening an oleaginous base fluid which requires a lesser amount of thickener than heretofore.
- novel chemical compounds comprising an ortho ester of an element selected from the group consisting of Al, Si and Ti with a hydroXy-substituted fatty acid soap of a metal of Groups IIII.
- the advantages obtained by thickening an oleaginous base fluid with the novel compounds of the present invention include a reduction in the amount of thickener needed and the cost of thickening such a fluid to the desired grease consistency, and also an enhancement of the stability of the resulting grease, especially where the oleaginous base fluid is of the synthetic ester type.
- novel compounds are prepared by the reaction of a hydroXy-substituted fatty acid compound in a solvent with an ortho ester of an element selected from Al, Si and Ti.
- the reaction taking place may be represented by the following equation, illustrating a preferred form of the practice of this invention:
- the first reactant shown in the above-illustrated equation is a soap of a hydroXy-substituted fatty acid, containing a total of from 12 to 24 carbon atoms.
- the hydroXy-substituted fatty acid will be one in which the radical represented by R in the above equation contains a chain of at least five carbon atoms.
- Various sources of such fatty acids are available.
- the most particularly preferred of these fatty acids is 12-hydroxystearic acid. Materials supplying 12-hydroxystearic acid, genan average value of at least 1.
- erally admixed with certain amounts of other fatty acid radicals such as hydrogenated ricinoleic acid and hydrogenated castor oil fatty acids are also useful in preparing the compounds of this invention; and when reference is made herein to IZ-hydroxystearic acid or its derivatives, it is to be understood that these commercial sources of this acid are intended to be included thereby. While 12- hydroxystearic acid is the most readily available of the hydroxy-substituted fatty acids, if desired soaps of other suitable fatty acids may be employed instead.
- hydroxy-substituted fatty acids are: hydroxycapric acid, dimethylhydroxy caprylic acid, dimethylhydroxycapric acid, hydroxylauric acid, hydroxymyristic acid, hydroxypalmitic acid, hydroxyarachicic acid, hydroxybehenic acid, S-hydroxystearic acid, and so forth.
- Hydroxy fatty acids which are suitable also include those formed by hydroxylation of unsaturated fatty acids of the indicated chain length, effected, for example by such oxidizing agents as peracetic acid, potassium permanganate and the like; hydroxy acids prepared by chlorinating fatty acids and hydrolyzing the chloro acids; mixtures of fatty acids or the like comprising hydroxy fatty acids of the stated chain length and so forth.
- fatty acids are used, as shown in the above equation, in the form of soaps thereof, that is salts of the hydroxy-substituted fatty acids, With metals of Groups I-III.
- Alternative Group I metal soaps which are within the scope of the present invention comprise sodium, potassium or like alkali metal salts of 12- hydroxystearic acid; lithium ll-hydroxystearate, lithium 8-hydroxystearate, lithium hydroxypalrnitate, sodium 8- hydroxystearate, lithium hydroxymyristate, lithium hydroxyarachidate, sodium hydroxyenanthate, sodium hydroxypalmitate, potassium hydroxypalmitate, and so forth.
- the sodium salts are referred to in the art as soda base soaps, and this terminology is sometimes used herein.
- Y in the above-stated formula represents groups satisfying the residual valence of the metal, other than valences satisfied by soap formation with the hydroxy-substituted fatty acid, which may be present because of this incomplete I soap formation.
- Y Will represent inorganic radicals, usually of relatively low molecular Weight, such as a halide ion like chloride, bromide or fluoride, or an oxygen-containing radical such as hydroxide or carbonate, bicarbonate or sulfate.
- Examples of presently useful soaps of a metal of Group II are the alkaline earth metal soaps such as the calcium, zinc, strontium and barium soaps of lZ-hydroxystearic acid, dimethyl hydroxycaprylic acid, 8-hydroxystearic acid, hydroxypalmitic acid, and so forth.
- mixtures of different soaps of Groups I LIII metals with hydroxy-substituted fatty acids may be used instead of individual compounds.
- mixed soaps of hydroxy fatty acids and unsubstituted fatty acids such as, for example, aluminum bis(l2-hydroxystearate) stearate, may be used.
- this is an ortho ester of the formula (R"O),,M' where R" is selected from the group consisting of alkyl and alkoxyalkyl radicals of from 1 to 8 carbon atoms, M is an element selected from the group consisting of Al, Si and Ti and n is the valence of M. Generally n Will have a value of more than I, in which case R" in each of the radicals R"O present in the stated ester may be the same or different.
- a first class of the said ortho esters particularly preferred in the practice of this invention are the ortho aluminates. These include, for example, aluminum trimethoxide, aluminum triethoxide, aluminum tri-n-propoxide, aluminum triisopropoxide, aluminum tri-n-butoxide, aluminum triisobutoxide, aluminum triamoxide, aluminum trihexoxide, aluminum triisoctoxide, aluminum methoxide diethoxide, aluminum n-propoxide diisopropoxide, aluminum tris(2-methoxyethoxide), aluminum vtris(2-ethoxyethoxide), aluminum tris(2-butoxyethoxide), aluminum tris (Z-(Z-ethoxyethoxy) ethoxide aluminum tris (Z-hexoxyethoxide), and so forth. Aluminum triisopropoxide is especially preferred.
- a third elementwhich forms ortho esters useful in the practice of this invention is titanium.
- the presently useful ortho metal esters Will include titanates such as tetramethyl titanate, tetraethyl titanate, tetrapropyl titanate, tetrabutyl titanate, tetrahexyl titanate, tetraamyl titanate, triethyl methyl titanate, tetrakis(2-ethoxyethyl) titanate and so forth.
- esters in which R of the stated formula may be replaced by another group include esters in which R of the stated formula may be replaced by another group.
- novel chemical compounds of this invention include various types, depending on the nature of the saltforming metal and of the ester-forming element, and also depending on the ratio in which the ortho ester is reacted with the fatty acid soap.
- the product is an aluminate ester of the hydroxy fatty acid soap.
- the product may be an aluminate ester of lithium hydroxystearate.
- the products are, respectively, silicate and titanate esters of hydroxy fatty acid soaps.
- an aluminate ester of a fatty acid soap is inclusive of various individual aluminate esters thereof, such as the dialkoxy aluminate monoester, the monoalkoxy aluminate diester, and the aluminate triester of the soap.
- the terms, a silicate or titanate ester of these soaps, are similarly inclusive.
- transesterification reaction illustrated above may produce a mixture of such mono-, diand triesters, rather than an individual ester, particularly Where the diand triesters are being made.
- Such mixtures are useful as grease thickeners in the practice of this invention, and are specifically contemplated as included among the presently provided novel products.
- M is aluminum
- these compounds may be designated as aluminate esters of Group I metal hydroxy fatty acid salts.
- m in the above formula has a value of 1 and n-m, a value of 2.
- lithium 12-hydroxystearate diisopropoxy aluminate ester lithium 12-hydroxystearate diethoxy aluminate ester, lithium 12-hydroxystearate dibutoxy aluminate ester, lithium 12-hydroxystearate dihexoxy aluminate ester, lithium 12-hydroxystearate bis (2-ethoxyethyl) aluminate ester, lithium 12-hydroxystearate ethoxy butoxy aluminate ester, the diisopropoxy aluminate ester of the soda base soap of l2-hydroxystearic acid, potassium 12-hydroxystearate diisopropoxy aluminate ester, the diisopropoxy aluminate ester of the soda base soap of 8-hydroxystearic acid, the bis-(2- ethoxyethyl) aluminate ester of the soda base soap of 8- hydroxystearic acid, lithium hydroxycaprate diisopropoxy aluminate, lithium 8-hydroxy
- the products are triesters such as the aluminate triester of lithium 12- hydroxystearate, the aluminate triester of lithium hydroxylaurate, the aluminate triester of the soda base soap of 12-hydroxystearic acid, and so forth.
- An aluminate ester of lithium hydroxystearate is a preferred product in this class of presently provided novel products.
- silicate esters of Group I metal soaps include 1:1 molar ratio products such as lithium 12-hydroxystearate tributoxy silicate ester, lithium hydroxybehenate triethoxy silicate ester, lithium dimethylhydroxycaprylate trihexoxy silicate ester, potassium 12- hydroxystearate triethoxy silicate ester, the diethoxy butoxy silicate ester of the soda base soap of 8-hydroxystearic acid, lithium 12-hydroxystearate tris(2-ethoxyethyl) silicate ester, and so forth.
- a 1:2, 1:3, or 1:4 molar ratio gives products such as the diethoxy silicate diester of lithium 12-hydroxystearate, the monoethoxy silicate triester of lithium 12-hydroxystearate, the silicate tetraester of lithium 12-hydroxystearate, the diethoxy silicate diester of the soda base soap of 12-hydroxystearic acid, the diethoxy silicate diester of lithium hydroxypalmitate, the mono(2-butoxyethyl) silicate triester of potassium 12-hydroxystearate, and so forth.
- the titanate esters include, for example, lithium 12-hydroxystearate trimethoxy titanate ester, the triethoxy titanate ester of the soda base soap of 12-hydroxystearic acid, lithium 12- hydroxystearate tris(2 ethoxyethoxy)titanate, and lith ium 12-hydroxystearate triisopropoxy titanate ester; the dimethoxy titanate diester of the soda base soap of hydroxylauric acid, the diisopropoxy titanate diester of lithium 12-hydroxystearate, and diisobutoxy titanate diester of the soda base soap of hydroxymargaric acid; the monoisopropoxy titanate triester of lithium 12-hydroxystearate, the monoethoxy titanate triester of lithium 12-hydroxystearate, the monoethoxy titanate triester of the soda base soap of hydroxymyristic acid, the titanate tetraester of the soda base soap of hydroxyarachidic acid, the titanate tetraester of lithium 12-hydroxystearate, and
- each of the hydroxy groups present in the starting material consisting of a hydroxy fatty acid soap will be esterified by reaction With the ortho ester.
- the ratio of reactants in terms of the ratio of hydroxy fatty acid radicals present in the soap to ortho ester molecules, may vary from 1:1 to 3:1 or 4:1.
- a divalent metal soap will contain two hydroxy fatty acid radicals and a 1:1 ratio of such a soap to ortho ester will require 2 moles of ortho ester per mole of soap to provide one ortho ester molecule per fatty acid hydroxy radical.
- a soap of a Group III metal like aluminum tris(hydroxy fatty acid) soaps three moles of ortho ester per mole of the soap is needed to produce a 1:1 ratio.
- esterification of the hydroxy groups can occur by displacement of a single one of the ester groups of the ortho ester, giving products of the structure formula, using an aluminate ester of a calcium soap as an example, as
- the product may have a cyclic structure l I R(
- the generic product formula given herein it is not intended to restrict the present products to any specific structure.
- the 1:1 ratio products will include calcium 12- hydroxystearate bis(diisopropoxy aluminate ester), zinc 12-hydroxystearate bis(diisopropoxy aluminate ester), strontium 12-hydroxystearate bis(diisopropoxy aluminate ester), barium 12-hydroxystearate bis(dibutoxy aluminate ester), barium hydroxylaurate bis(dimethoxy aluminate ester), calcium S-hydroxystearate bis(dlibutoxy aluminate ester), zinc hydroxymyristate bis(diethoxy aluminate ester), calcium 12-hydroxystearate bis(diisoheptoxy aluminate ester), zinc S-hydroxystearate bis [bis(2-ethoxyethoxy) aluminate ester], and so forth.
- the aluminate esters provided may be designated as monoalkoxy aluminate diesters. Exemplary of these are the mono-isobutoxy aluminate diester of calcium 12-hydroxystearate, the mono-isopropoxy aluminate diester of zinc hydroxylaurate, and so forth. Where the ratio is 3:1, the esters obtained include, for example, aluminates which may be referred to as triesters such as. the aluminate triester of calcium 12-hydroxystearate, the aluminate triester of barium hydroxymyristate, the aluminate triester of zinc 12-hydroxystearate, and so forth.
- Silicate esters of Group II metal soaps provided by this invention include those wherein from 1 to 4 moles of fatty acid hydroxy groups per mole of silicate ortho ester are reacted to form the present novel products.
- Exemplary of the 1:1 ratio products are, for example, barium l2-hydroxystearate bis(triethoxy silicate ester), zinc 12-hydroxystearate bis(triethoxy silicate ester), strontium 12- hydroxystearate bis (triethoxy silicate ester), zinc hydroxycarnaubate bis(triethoxy silicate ester), calcium 12-hydroxystearate bis [tris(2-ethoxyethoxy) silicate ester], zinc 8-hydroxystearate bis(trioctoxy silicate ester), and so forth.
- the compounds provided by this invention include, for example, the diethoxy silicate diester of barium 12-hydroxystearate, the dibutoxy silicate diester of calcium 12-hydroxystearate, the diethoxy silicate diester of calcium hydroxypalmitate, the monethoxy silicate triester of zinc l2-hydroxystearate, and the like.
- titanate esters of divalent Group II metal soaps of hydroxy-substituted fatty acids are, calcium IZ-hydroxystearate bis(triethoxy titanate ester), zinc hydroxylaurate bis(tripropoxy titanate ester), calcium 12-hydroxystearate bis(tributoxy titanate ester), zinc l2-hydroxystearate bis(tripropoxy titanate ester), the bis(2-ethoxy) titanate triester of zinc S-hydroxystearate, the titanate tetraester of calcium 12-hydroxystearate, and so forth.
- one preferred class of compound of this type is the aluminum-aluminum system, provided by reacting an aluminate ortho ester with an aluminum soap of a hydroxy-substituted fatty acid.
- exemplary of these compounds are a 1:1 ratio product such as aluminum tris( l2 hydroxystearate) tris(diisopropoxy aluminate ester) of the formula
- Use of commercial aluminum 12-hydroxystearate wherein valences of the soap-forming aluminum atom not bonded to the carboxyl radical of the hydroxy-su'bstituted fatty acid are satisfied by anions such as inorganic groups like.
- hydroxide, sulfate or the like may give mixtures of the above-illustrated compound with compounds Where an average of from 1 to 2 of the valences of the salt-forming aluminum radical are satisfied by anions such as sulfate groups.
- These mixtures and aluminum 12-hydroxystearate (diisopropoxy aluminate ester) disulfate or like ester soaps included therein are also included among the novel products of this invention, and references to alumi num hydroxy fatty acid esters herein should be understood as including all such products
- Additional alumnium-alurninum systems provided in accordance with this invention comprise for example, 1:1 ratio products like aluminum 12-hydroxystearate dimethoxy aluminate ester, aluminum hydroxylaurate diethoxy aluminate ester, aluminum hydroxybehenate dibutoxy aluminate ester, aluminum hydroxypalmitate dihexoxy aluminate ester, aluminum IZ-hydroxystearate dioctoxy aluminate este
- Silicate esters of Group III salts of hydroxy-substituted fatty acids include, for example, aluminum 12-hydroxystearate triethoxy silicate ester, aluminum hydroxyarachidate tripropoxy silicate ester, the dibutoxy silicate diester of aluminum hydroxydimethylcaprylate, the tris(2-ethoxyethoxy) silicate monester of aluminum S-hydroxystearate, the silicate tetraester of aluminum 12-hydroxystearate, and so forth.
- esters of salts of Group III metals provided hereby include aluminum lZ-hydroxystearate tris[2-(2-ethoxyethoxy)ethoxy] titanate ester, aluminum 12-hydroxystearate triethoxy titanate ester, the di'butoxy titanate diester of aluminum l2-hydroxystearate, the titanate tetraester of aluminum hydroxylaurate, and so forth.
- esters of hydroxy fatty acid soaps are preferably made in accordance with this invention by transesterification of an ortho ester of the formula (RO) M', where R" is alkyl or alkoxyalkyl of l to 8 carbon atoms, and M is Al, Si or Ti, with the fatty acid soap.
- esters of the above-illustrated formula may be produced.
- the stated alcohol may be a hydroxy-hydrocarbon, including saturated aliphatic alcohols such as higher alkanols like isooctyl, nonyl, hexadecyl and octadecyl alcohols, and cycloalkanols like cyclohexanol; glycols like ethylene glycol; and aromatic, including aralkyl and alkaryl, alcohols like phenol, benzyl alcohol and so forth.
- It may be hydrocarbon-oxy-hydrocarbon, that is, an ether alcohol, such as diethylene glycol butyl ether, guaiacol, p-phenoxyphenol, and so forth.
- the lower alkanols and alkoxy-alkanols like ethanol and 2-ethoxyethanol, could be used, but since the ortho esters already contain lower alkoxy radicals, generally no advantage would be gained.
- the stated alcohol can also be a halogenated derivative of one of the stated types of alcohols.
- the halogen present therein will preferably be relatively stable and inert; it may be bromine, chlorine or fluorine.
- Halogenated alcohols wherein the hydrocarbon radical contains few or no hydrogen atoms, are preferred.
- Exemplary of lower haloalkanols of this class are pe-rfluoroethanol, perchloroethanol, perbromoethanol, trifluoroethanol, trifluorobromochloroethanol, tetrafluoropropanol, pentafluoropropanol, perfluoropropanol, perfluorobutanol, perchlorocyclopentanol, perfluorohexanol, decafluorohexanol, nonofiuoro-2-ethoxyethanol, and the like.
- heptanols substituted by from 12 to 15 fluorine atoms are heptanols substituted by from 12 to 15 fluorine atoms, nonanols substituted by from 16 to 19 fluorine atoms, undecanols substituted by from 20 to 23 fluorine atoms, tridecanols substituted by from 24 to 27 fluorine atoms, perfluorohexadecanol, perchlorinated and perfluoroinated diethylene glycol butyl ether, perbromohexanol, and so forth. Cycloalkanols such as perchlorocyclohexanol may also be used, as may aromatic alcohols such as pentachlorophenol and the like.
- the product when the stated alcohol is an alkanol (including ether alkanols) and it is reacted with an aluminate ester of a hydroxy fatty acid soap, the product is an alkoxy aluminate ester of the fatty acid soap.
- it may be an isooctoxy aluminate ester of lithium hydroxystearate, a hexadecoxy aluminate ester of the soda base soap of hydroxystearic acid, a 2-[2-(2-butoxy) ethoxy] ethoxy aluminate ester of lithium hydroxystearate, and so forth.
- Additional products of hydroxy-hydrocarbons and ether alcohols provided hereby include, for example, a cyclohexoxy aluminate ester of lithium hydroxystearate, a glycol diester of an aluminate ester of lithium hydroxystearate, a phenoxy aluminate ester of the soda base soap of hydroxystearic acid, a benzyloxy silicate ester of lithium hydroxypalmitate, an isopropoxyphenoxy silicate ester of lithium hydroxystearate, and so forth.
- fluoroalkoxy esters such as a trifluoroethoxy aluminate ester of lithium hydroxystearate, a heptafluoro-2-methoxyethoxy aluminate ester of sodium hydroxystearate, a perfiuoro-pentoxy silicate ester of lithium hydroxystearate, a hexadecafluorononoxy silicate ester of aluminum hydroxystearate, a perfluorobutandioxy silicate ester of lithium hydroxystearate, a dodecafluoroheptoxy titanate ester of lithium hydroxystearate, a dodecafluoroheptoxy aluminate ester of lithium hydroxystearate, a perfluorotridecoxy aluminate ester of aluminum hydroxystearate, and so forth; as well as other haloalkoxy esters such as tribromomethoxy
- the stated alcohol may provide from 1 to all of the ortho ester radicals not esterified by the hydroxy fatty acid soap. Where it does provide less than all, one or two of the ester radicals of the original ortho ester may remain present in the product.
- a fluoroheptoxy aluminate ester of lithium hydroxystearate includes the di(fluoroheptoxy) aluminate and mono (fluoroheptoxy) mono-substituted (such as mono-isopropoxy) aluminate mono-esters of lithium hydroxystearate, as well as the mono(fluoroheptoxy) aluminate diester of lithium hydroxystearate. It is to be understood that the preceding list of illustrative esters includes each of such individual species.
- the method provided by this invention comprises contacting the selected ortho ester of an element selected from A1, Si and Ti with the selected hydroxy-substituted fatty acid soap of a metal of Groups I-III, as set forth hereinabove, in a solvent.
- the ratios in which the ortho ester and the hydroxy-substituted fatty acid soap are contacted will, as will be evident from the preceding discussion, depend on the nature of the product desired. At least sufficient ortho ester will be present to permit esterification of each of the hydroxy groups present in the fatty acid radicals of the hydroxy fatty acid soap.
- the reaction mixtures will comprise about 1 mole of the ortho ester per mole of hydroxy fatty acid radical.
- a mole of a soap containing one hydroxy fatty acid radical per atom of soap-forming metal will be regarded as providing one mole of hydroxy fatty acid radical
- one mole of a soap containing two hydroxy fatty acid radicals per atom of the soap-forming metal will be regarded as providing two moles of hydroxy fatty acid, and so forth.
- the solvent to be employed in preparing the novel compounds of this invention should be a substantially inert fluid which dissolves or is miscible With the reactants employed.
- Suitable solvents for example, comprise an aromatic hydrocarbon such as toluene or xylene, an aliphatic hydrocarbon such as a petroleum fraction or cyclohexane, or a non-hydrocarbon solvent such as morpholine, 'dimethyl formamide, pyridine, or the like.
- the solvent have a moderately high boiling point, on the order of about 100 C. or above.
- the reactants will be contacted in the solvent for a time and at a temperature sufiicient to permit at least a substantial proportion of the fatty acid hydroxyl radicals to become esten'fied by the ortho ester.
- This reaction may take place at room temperature or below. It can and generally will be accelerated by heating. Temperatures to be employed in such case may range from just above about room temperature to any temperature below the decomposition temperature of the reaction mixture components.
- the reaction by which the hydroxy group of the hydroxy-substituted fatty acid salt is esterified by the ortho ester involves displacement of an alkoxy group from the ortho ester.
- This alkoxy group forms an alcohol.
- the reaction may accordingly advantageously :be conducted at a temperature such that the alcohol formed by this transesterification is evolved from the reaction mixture. By measurement of the amount of such alcohol evolved, the reaction can be followed so as to control the extent of esterification of the metal ortho ester by the hydroxysubstituted fatty acid.
- Operation at atmospheric pressure i ordinarily preferred but elevated or decreased pressure can be used where necessary.
- the pressure is desirably such that the alcohol formed is allowed to distill off but sufficient to maintain the reactants in the liquid phase.
- Catalysts are not necessary for the present reaction but may sometimes be used advantageously.
- Useful catalysts for transesterificat-ion are generally bases.
- the ortho ester may be sufiiciently basic to catalyze the reaction itself.
- Catalysts which may be used include alkoxides of alkali metals, such as sodium methoxide, potassium methoxide, sodium ethoxide and so fonth; and alkalies such as sodium, lithium and potassium hydroxide, sodium bicarbonate, or the like.
- the product comprising the ester of the soap of the fatty acid separates.
- the present products are substantially insoluble in a solvent like Xylene, and the xylene can be separated therefrom to a major degree by simply pressing, for example. Isolation of the product can be effected by evaporating off the solvent, which may be done under vacuum, for example.
- the isolated products are generally crystalline materials, which are adopted for incorporation into an oleaginous base fluid, as set forth hereinafter.
- the ortho ester may be first reacted with a hydroxy-substituted fatty acid compound such as the hydroxy-substituted fatty acid itself, or an ester thereof, to esterify the hydroxy group, and the resulting ester thereafter converted to a soap by 12 reaction with a soap-forming metal compound such as a metal hydroxide.
- ester soap may also be formed in a lubricating oil base in situ, particularly when non saponifiable inert oils such as mineral oils or non-hydrolyzable synthetic oils are used.
- the reactants will be dissolved in a portion of the lubricating oil base and reacted at the necessary temperature.
- additional lubricating oil fluid may be added and the mixture may be milled or otherwise treated to disperse the ester soaps through the whole mixture to provide a grease.
- the ortho ester of the hydroxy fatty acid soap in addition to the ortho ester and hydroxy fatty acid soap, it is preferred to form the ortho ester of the hydroxy fatty acid soap first, and then to react it with the alcohol.
- the alcohol will simply be added to the hydroxy fatty acid soap ester prior to its isolation from the reaction mixture.
- the amount of alcohol required to displace all the alkoxy radicals from the soap ester will equal nm moles per mole of soap ester, where n and m have the values stated above.
- the a1cohol:soap ester molar ratio will be about 1:1, but it may range from 0.121 up to 10:1. Reaction conditions substantially as described above may be used to effect reaction of the alcohol with the ester of the soap, and isolation of the product can also be accomplished similarly.
- the ester soap is not formed in situ in the oleaginous base fluid in which it is to the used, it will be dispersed therein, generally after isolation from the solvent in which it is prepared, in grease-making proportions.
- concentration required to thicken the lubricating base fluid to a grease will vary, depending on the selected compound. In accordance with this invention, it may be as low as about 0.5% by weight of the total grease, and still give effective thickening. Proportions up to about 40%, or even 70%, by weight of the total, of thickener in a lubricating base fluid are frequently used. Generally with the particularly effective thickeners of this invention, a proportion up to about 15% will be found satisfactory to provide grease consistencies. However higher concentrations may be used if desired.
- Such concentrates will generally comprise a lubricating base fluid as a liquid medium for the thickener, but the liquid medium may instead be another fluid compatible with the type of lubricating base fluid with which it is to be combined if desired, such as an alcohol or the like.
- concentration of the presently provided novel thickener in a concentrate composition will generally be at least about 40% by weight of the total, and may be as high as or even by weight of the total if desired.
- the new ester soaps of this invention may also be combined with conventional soap thickeners.
- the novel ester. soaps provided hereby should preferably comprise at least one-third of the total soap and thus comprise at least about (HS-0.20% by weight of the grease.
- the lubricating grease compositions provided in accordance with this invention will comprise an oleaginous base fluid compounded with a thickening amount of one or more of the ester soaps provided hereby.
- the oleagin-ous base used in the compositions may be selected from a wide variety of natural or synthetic lubricant oils.
- natural oils can advantageously be employed.
- Illustrative of such natural oleaginous bases are mineral oils "such as naphthene and paraflin base oils, vegetable oils such as cotton seed oil and castor oil; animal and marine oils such as sperm whale oil, lard oil, blown fish oil and degras; and mixtures thereof.
- mineral oils are preferred.
- a typical mineral oil base for extreme pressure lubrication will be characterized by a viscosity of 35-350 Saybolt Universal seconds at 210 F., a viscosity index in the range of from -25 to 150, and a flash point point of between about 275 and 600 F.
- Polyorganosiloxanes also known as silicones, or silicone polymers, comprise one class of synthetic lubricant bases of commercial importance which may be improved in properties to a substantial degree by modification in accordance with this invention.
- Polysiloxanes are compounds comprising essentially silicon atoms connected to one another by oxygen atoms.
- a preponderant number of the remaining valences of the silicon atoms are satisfied by the substitution thereon of organic radicals, attached by a carbon-to-silicon bond.
- organic radicals examples include aliphatic radicals including alkyl radicals such as methyl, ethyl, propyl, butyl, and so forth; alicyclic radicals such as phenyl, cyclohexyl, diphenyl, anthracyl, naphthyl, and so forth; aralkyl radicals such as benzyl and alkaryl radicals such as tolyl, xylyl, and so forth; and the like.
- Relatively common oils of this type are dimethylsilicone polymer, phenylmethylsilicone polymer, chlorophenylmethylsilicone polymer, and so forth.
- silicones in which the silicon atoms are substituted by two different organic radicals, e.g., methyl and phenyl radicals.
- organic radicals substituted on the silicon atoms in the silicone polymers are in turn substituted by halogen atoms, especially chlorine atoms.
- the silicone may be substituted by chlorophenyl radicals such as dichlorophenyl, trichlorophenyl and tetrachloro phenyl radicals, other valences of the silicon atoms being satisfied by the hydrocarbon radicals such as methyl radicals or the like.
- the silicones intended for use as oleaginous bases will desirably contain an average of from 1.9 to 2.67 organic groups per silicon atom.
- Remaining valences, if any, of the silicon atoms may be satisfied by radicals attached to the silicon atoms in the compounds from which the silicone polymers are prepared, such as hydrolyzable organo-substituted silanes; or by the product of hydrolysis of such radicals, such as hydroxide radicals.
- Another class of synthetic oleaginous bases of particular interest in the practice of the present invention comprises organic polyesters.
- these may comprise esters of polycarboxylic acids, such as dicarboxylic acid diesters.
- esters of polycarboxylic acids such as dicarboxylic acid diesters.
- such synthetic ester lubricants may have the general formula R(COOR (COOR where R is an aliphatic or cy-cloaliphatic hydrooarbon radical of from 2 to 8 carbon atoms and R and R are the same or different and are branched chain alkyl or alkyl-substituted cycloalkyl radicals of at least 4 carbon atoms.
- esters may be derived from succinic, maleic, pyrotartaric, glutaric, adipic, pimelic, suberic, azelaic, sebacic, pinic, thiopropionic or oxypropionic acids or the like, specific esters of this nature including for example di( l-methyl 4 ethyloctyl) glutarate, di(2-ethylhexyl)oxydibutyric acid, di(2-ethylhexyl)adipate, di(3- methylbutyl)azelate, di(2-ethylhexyl)azelate, di(Z-ethylhexyl)sebacate, di(3,5,5 trimethylhexyl)sebacate, di(2- ethylhexyl)maleate, di(methylcyclohexyl) adipate, 2-ethylhexyl l-methylhexyl sebacate and the like.
- the polyester synthetic oleaginous bases may be produced by reacting a polyhydric alcohol with a monocarboxylic acid.
- a polyhydric alcohol such as ethylene glycol or pentaerythritol is esterified with an acid of relatively long chain length such as caproic, pelargonic,
- polyesters derived from polyols are pentaerythritol tetrapelargonate, pentaerythritol tetracaprate, pentaerythritol tetrapalmitate, pentaerythritol tetrastearate, ethylene glycol divalerate, diethylene glycol dicaprate, propylene glycol dicaprylate, and so forth.
- complex esters which may be employed as oleaginous bases may be obtained by esterifying one mole of a dicarboxylic acid with 2 moles of a glycol and 2 moles of a monocarboxylic acid; or by esterifying one mole of a dicarboxylic acid with one mole each of a glycol, a monocarboxylic acid and a monohydric alcohol.
- a suitable complex ester is the ester prepared from one mole of ethylene glycol, two moles of sebacic acid and two moles of 2-ethylhexanol; and the ester prepared from one mole of triethylene glycol, one mole of adipic acid, one mole of n-caproic acid and one mole of 2-ethylhexanol.
- oleaginous bases which can be used if desired in the practice of this invention.
- such lubricant bases may comprise hydrocarbon oils prepared by polymerization of unsaturated hydrocarbons.
- Mixtures of oleaginous bases may sometimes be preferred to any single lubricant fluid, and are included in the scope of this invention.
- Example I 1228 grams (4 moles) of lithium hydroxystearate, 832 grams (4 moles) of tetraethyl silicate, 7000 ml. of xylene and 5 grams of sodium methoxide are mixed in a 3- necked flask. This mixture is heated with rapid agitation to a pot temperature of C. The reaction mixture is held at 140 C. until 235 cc. of distillate, boiling at 7882 C., is collected. The pot contents are then transferred to a resin kettle, and stripped of solvent over a steam bath at 1.0 mm. pressure. The residual solid is dried in a forced draft oven at 250 F. and ground to a powder. The product is a silicate ester of lithium hydroxystearate, comprising lithium hydroxystearate triethoxy silicate ester. It is a white solid melting at 200 C. A yield of 1236 grams (63.5% of theory) is obtained.
- Example II 462 grams (0.5 mole) of commercial aluminum hydroxystearate, comprising aluminum tris(12-hydroxystearate), 312 grains (1.5 moles) of tetraethyl silicate, 4800 m1. of xylene and 1.6 grams of sodium methoxide are mixed in a 3-necked flask and heated to a'pot temperature of 125 --130"* 87 cc. of distillate evolved and collected during a hotir period; The resultant mixture is stripped of xylene over a steam bath at 0.1-.5 mm. pressure. The solid residue is dried in a forced draft oven at 250 F.
- Example 111 277 grams (0.3 mole) of aluminum hydroxystearate, as described in Example II, 187 grams (0.9 mole) of tetraethyl silicate, 2800 ml. of xylene and 1.0 gram of sodium methoxide are mixed in a 3-necked flask and heated to apot temperature of 125130 C. 47 cc. of distillate is evolved and collected in a two hour period. 896 grams (2.7 moles) of dodecafluoroheptyl alcohol is added and the heating is continued at 125- 130 C. until an additional 130 cc. of distillate is removed. The resultant material is filtered. The filtrate is stripped of volatiles over a steam bath at 0.54.0 nun. pressure.
- the residue is then dried in a forced draft oven at 250 F.
- the yield is 228 grams (20% theory) of a fluoroheptoxy silicate ester of aluminum hydroxystearate, comprising aluminum tris(hydroxystearate) tris[tris(dodecafluoroheptoxy) silicate ester], melting at 239 C.
- Example 1V 184.2 grams (0.6 mole) of lithium hydroxystearate, 42.6 grams (0.15 mole) of tetraisopropyl titanate, 2000 ml. of exylene and 0.5 gram of sodium me-thoxide are mixed in a 3-necked flask. The mixture is heated to 125 C. while agitating vigorously. 45 cc. of distillate is removed at a temperature of 80-85 C. over a two hour period. After cooling, the reaction mixture is poured into 2000 ml. of acetone. The white precipitate is filtered off and dried in a forced draft oven at 220 F.
- the product is a titanate ester of lithium hydroxystearate, comprising the titanate tetraester of lithium hydroxystearate. It is a white crystalline solid melting at 270 C. A yield of 194 grams (97.5% of theory) is obtained.
- Example V 154 grams (0.15 mole) of aluminum hydroxystearate
- Example VI 921 grams (3.0 moles) of lithium hydroxystearate, 204 grams (1.0 mole) of aluminum triisopropoxi-de and 4500 ml. of xylene are mixed in a 3-necked flask and gradually heated to 130 C. 225 cc. of isopropyl alcohol is evolved and collected over an 23-hour period. The re- 16 action is then stripped of xylene over a steam bath at 0.2-1.0 mm. pressure. The product is finally dried in a forced draft oven at 225 F. A yield of 933 grams (99% of theory) of aluminate ester of lithium hydroxystearate, comprising the aluminate triester of lithium hydroxystearate, m. 274 C., is obtained.
- Titanate tetraester of lithium monohydroxystearate 5.
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Description
United States Patent O ice ORTHO ESTERS F ALUMINUM, SILICON 0R TI- TANIUM WITH A METAL SOAP OF A HY- DROXY-FATTY ACID John A. Kearney, Pennsauken, N.J., assignor to E. F. Houghton & Co., Philadelphia, Pa., a corporation of Pennsylvania No Drawing. Original application Jan. 11, 1961, Ser. No. 81,955, now Patent No. 3,158,573, dated Nov. 24, 1964. Divided and this application May 9, 1963, Ser. No. 279,313
5 Claims. (Cl. 260-414) This invention relates to novel esters, to compositions containing such esters, and to methods of making and using these esters. More particularly, it relates to novel esters of hydroXy-substituted fatty acid soaps, to methods of making such esters, to lubricating compositions containing such esters, and to methods of thickening lubricating compositions employing such esters. This application is a division of my copending application Serial No. 81,955, filed January 11, 1961, now Patent No. 3,158,573.
-It has been known that soaps such as the lithium and aluminum soaps of hydroxy-substituted fatty acids like 12-hydroXy-stearic acid are useful in lubricants as grease thickeners. However, these products have limited thickening power and are expensive. It has also been observed that such soaps sometimes exhibit a tendency to cause instability of oleaginous lubricating base fluids comprising hydrolyzable synthetic lubricants such as ester fluids.
Derivatives wherein an organic radical is attached to the hydroxy group of hydroxy-substituted fatty acids have been known in the art hitherto. However, these ma terials have also been found deficient in various respects, with regard to utility as lubricating grease thickeners.
An object of this invention is to provide novel chemical compounds.
A particular object of this invention is to provide novel chemical compounds particularly adapted for use as grease thickeners.
A further particular object of this invention is to provide novel lubricating grease compositions comprising an oleaginous base fluid thickened to a grease consistency.
Another object is to provide a novel method of thickening lubricating base fluids to grease consistency.
Another object is to provide lubricating grease compositions of increased stability comprising a hydrolyzable synthetic ester oleaginous base lubricating fluid.
Another object is to provide novel grease thickeners of enhanced thickening power.
Another object is to provide a novel method of thickening an oleaginous base fluid which requires a lesser amount of thickener than heretofore.
These and other objects will become evident on consideration of the following specification and claims.
In accordance with this invention, there are provided novel chemical compounds comprising an ortho ester of an element selected from the group consisting of Al, Si and Ti with a hydroXy-substituted fatty acid soap of a metal of Groups IIII.
Compounds of the stated nature, it has been found, can be prepared by reacting an ortho ester of aluminum, silicon or titanium in a solvent with a Group I-III metal soap of a hydroxy-substituted acid.
These novel compounds have been found to be effective thickeners for oleaginous base fluids, forming greases and like thickened lubricating products. Greases comprising these novel compounds and an oleaginous base fluid, and a method of thickening an oleaginous base fluid to a grease, comprising introducing a thickening amount of the stated type of novel compound, are also provided by this invention.
3,287,384 Patented Nov. 22, 1966 It has been found that said novel compounds have a valuably potent thickening action when added to an oleaginous base fluid. Thus, for example, the ester prepared by reacting the lithium soap of 12-hydroxystearic acid with aluminum triisopropoxide has half again as potent a thickening effect as the lithium l2-hydroxystearate soap. It requires only about the amount, by Weight, of this novel metal ester as of the lithium soap of hydroxystearic acid to thicken an oleaginous base fluid to the same extent.
Moreover, the present compounds of a hydroxy fatty acid having hydroxy groups blocked by esterification have enhanced stability in lubricating compositions, particularly in lubricating compositions comprising ester type oleaginous base fluids, as compared to the soaps of hydroxy-substituted fatty acids containing a free hydroxy group.
Thus the advantages obtained by thickening an oleaginous base fluid with the novel compounds of the present invention include a reduction in the amount of thickener needed and the cost of thickening such a fluid to the desired grease consistency, and also an enhancement of the stability of the resulting grease, especially where the oleaginous base fluid is of the synthetic ester type.
A grease comprising an oleaginous base fluid and a thickening amount of a novel compound as provided by this invention is a novel valuable product adapted for use for a variety of purposes. It is especially useful where low temperature performance is required. It is also particularly valuable where a lubricant characterized by retention of substantially the same viscosity over a wide temperature range, coupled with satisfactory stability, is required, for which purpose the synthetic lubricating fluids including the ester base type are frequently used.
The nature of the presently provided novel compounds may be appreciate most readily by consideration of the method by which they may be prepared. In accordance with this invention, the stated novel compounds are prepared by the reaction of a hydroXy-substituted fatty acid compound in a solvent with an ortho ester of an element selected from Al, Si and Ti. The reaction taking place may be represented by the following equation, illustrating a preferred form of the practice of this invention:
Where R and R are aliphatic hydrocarbon radicals containing together from 10 to 22 carbon atoms, M is a metal of Groups I-III, R is selected from the group consisting of alkyl and alkoxyalkyl radicals of from 1 to 8 carbon atoms, M' is an element selected from the group consisting of Al, Si and Ti, Y is an anion, n and m are integers, n is the valence of M, m has a value of from 1 to n, and x and y are integers Whose total equals the valence of M. Where more than one R"O group is present in the illustrated formulae, each R" may be the same or different. The groups referred to are groups of the Periodic Table.
The first reactant shown in the above-illustrated equation is a soap of a hydroXy-substituted fatty acid, containing a total of from 12 to 24 carbon atoms. Preferably the hydroXy-substituted fatty acid will be one in which the radical represented by R in the above equation contains a chain of at least five carbon atoms. Various sources of such fatty acids are available. The most particularly preferred of these fatty acids is 12-hydroxystearic acid. Materials supplying 12-hydroxystearic acid, genan average value of at least 1.
erally admixed with certain amounts of other fatty acid radicals, such as hydrogenated ricinoleic acid and hydrogenated castor oil fatty acids are also useful in preparing the compounds of this invention; and when reference is made herein to IZ-hydroxystearic acid or its derivatives, it is to be understood that these commercial sources of this acid are intended to be included thereby. While 12- hydroxystearic acid is the most readily available of the hydroxy-substituted fatty acids, if desired soaps of other suitable fatty acids may be employed instead. Exemplary of presently useful hydroxy-substituted fatty acids are: hydroxycapric acid, dimethylhydroxy caprylic acid, dimethylhydroxycapric acid, hydroxylauric acid, hydroxymyristic acid, hydroxypalmitic acid, hydroxyarachicic acid, hydroxybehenic acid, S-hydroxystearic acid, and so forth. Hydroxy fatty acids which are suitable also include those formed by hydroxylation of unsaturated fatty acids of the indicated chain length, effected, for example by such oxidizing agents as peracetic acid, potassium permanganate and the like; hydroxy acids prepared by chlorinating fatty acids and hydrolyzing the chloro acids; mixtures of fatty acids or the like comprising hydroxy fatty acids of the stated chain length and so forth.
These fatty acids are used, as shown in the above equation, in the form of soaps thereof, that is salts of the hydroxy-substituted fatty acids, With metals of Groups I-III.
Where the metal M is a metal of Group I, which metals have a valence of 1, the fatty acid soap will be of the formula i where R and R are as defined above, and M is a metal of Group I. Soaps of this type, and particularly the lithium soaps of hydroxy-substituted fatty acids of this type, form the preferred type of hydroxy-substituted fatty acid compound used in preparing the novel compounds of this invention. The lithium soap of l2-hydroxystearic acid is especially preferred. Alternative Group I metal soaps which are within the scope of the present invention comprise sodium, potassium or like alkali metal salts of 12- hydroxystearic acid; lithium ll-hydroxystearate, lithium 8-hydroxystearate, lithium hydroxypalrnitate, sodium 8- hydroxystearate, lithium hydroxymyristate, lithium hydroxyarachidate, sodium hydroxyenanthate, sodium hydroxypalmitate, potassium hydroxypalmitate, and so forth. The sodium salts are referred to in the art as soda base soaps, and this terminology is sometimes used herein.
Where M is a metal of Group II or III, the formula for the fatty acid soaps may be illustrated as follows:
Where M is a metal of Groups II or III, and x+y equals the valence of the metal. Preferably y Will have Where y has a value of less than the valence of the metal, Y in the stated formula will represent an anion satisfying the residual valence of the metal. Fatty acid soaps or salts are generally prepared by reacting the fatty acid or a compound thereof such as a fatty acid ester with an inorganic compound of the salt-forming metal, such as aluminum sulfate, for example. Under commercial conditions, the stated reaction frequently fails to replace all of the inorganic radicals attached to the trivalent metal Withradicals of fatty acid. Y in the above-stated formula represents groups satisfying the residual valence of the metal, other than valences satisfied by soap formation with the hydroxy-substituted fatty acid, which may be present because of this incomplete I soap formation. Generally Y Will represent inorganic radicals, usually of relatively low molecular Weight, such as a halide ion like chloride, bromide or fluoride, or an oxygen-containing radical such as hydroxide or carbonate, bicarbonate or sulfate.
Examples of presently useful soaps of a metal of Group II are the alkaline earth metal soaps such as the calcium, zinc, strontium and barium soaps of lZ-hydroxystearic acid, dimethyl hydroxycaprylic acid, 8-hydroxystearic acid, hydroxypalmitic acid, and so forth.
The most preferred and most common of the soapforming metals of Group III is aluminum. Illustrative of presently useful aluminum salts are aluminum tris(12- hydroxystearate), aluminum bis(l2 hydroxystearate) chloride, aluminum bis(l2-hydroxystearate) hydroxide, aluminum bis(12-hydroxystearate) sulfate, aluminum mono(12-hydroxystearate) dichloride, aluminum mono- (IZ-hydroxystearate) dihydroxide, aluminum IIlOl'lO(12 hydroxystearate) disulfate, aluminum tris(8-hydroxystearate), aluminum bis(l0-hydroxystearate) sulfate, aluminum tris(hydroxypalmitate), aluminum bis(hydroxypalmitate) sulfate, aluminum bis(hydroxypalmitate) hydroxide, aluminum bis(hydroxymyristate) hydroxide, aluminum bis(hydroxylaurate) sulfate, and so forth. The corresponding soaps of other metals of Group III may be employed alternatively, if desired.
In all cases, mixtures of different soaps of Groups I LIII metals with hydroxy-substituted fatty acids may be used instead of individual compounds. Also, mixed soaps of hydroxy fatty acids and unsubstituted fatty acids such as, for example, aluminum bis(l2-hydroxystearate) stearate, may be used.
With respect to the second reactant employed in preparing the novel compounds of this invention, this is an ortho ester of the formula (R"O),,M' where R" is selected from the group consisting of alkyl and alkoxyalkyl radicals of from 1 to 8 carbon atoms, M is an element selected from the group consisting of Al, Si and Ti and n is the valence of M. Generally n Will have a value of more than I, in which case R" in each of the radicals R"O present in the stated ester may be the same or different.
A first class of the said ortho esters particularly preferred in the practice of this invention are the ortho aluminates. These include, for example, aluminum trimethoxide, aluminum triethoxide, aluminum tri-n-propoxide, aluminum triisopropoxide, aluminum tri-n-butoxide, aluminum triisobutoxide, aluminum triamoxide, aluminum trihexoxide, aluminum triisoctoxide, aluminum methoxide diethoxide, aluminum n-propoxide diisopropoxide, aluminum tris(2-methoxyethoxide), aluminum vtris(2-ethoxyethoxide), aluminum tris(2-butoxyethoxide), aluminum tris (Z-(Z-ethoxyethoxy) ethoxide aluminum tris (Z-hexoxyethoxide), and so forth. Aluminum triisopropoxide is especially preferred.
A second class of said ortho esters also of particular interest in the practice of this invention comprises ortho silicates. Tetraethyl silicate is particularly preferred. Alternatively there may be employed other esters of ortho silicic acid such as tetramethyl silicate, tetrapropyl silicate, tetrabutyl silicate, tetraamyl silicate, tetrahexyl silicate, tetraoctyl silicate, tetraisopropyl silicate, dimethyl diethyl silicate, triethyl hexyl silicate, tetrakis(2-ethoxyethyl) silicate, bis(2-methoxyethyl) diethyl silicate, and so forth.
A third elementwhich forms ortho esters useful in the practice of this invention is titanium. Accordingly, the presently useful ortho metal esters Will include titanates such as tetramethyl titanate, tetraethyl titanate, tetrapropyl titanate, tetrabutyl titanate, tetrahexyl titanate, tetraamyl titanate, triethyl methyl titanate, tetrakis(2-ethoxyethyl) titanate and so forth.
In each case, either individual ortho esters or mixtures thereof may be used in practicing the invention.
Displacing one of the ester radicals of the aforesaid ortho esters with a Group I-III metal soap of a hydroxysubstituted fattyacid as hereinabove discussed in accordance With the method of this invention produces the novel chemical compounds of this invention, comprising ortho esters of an element of Groups III and IV with a hydroxy- '5 Substituted fatty acid soap of a metal of Groups I-III, as represented by the equation where R, R, R, M, M, Y, N, M, x and y are as defined above, and the formula on the right represents a preferred form of the novel chemical compounds provided by this invention.
As will appear hereinafter, the presently provided products also include esters in which R of the stated formula may be replaced by another group.
The novel chemical compounds of this invention include various types, depending on the nature of the saltforming metal and of the ester-forming element, and also depending on the ratio in which the ortho ester is reacted with the fatty acid soap.
In general, where the ortho ester is an aluminate, the product is an aluminate ester of the hydroxy fatty acid soap. For example, the product may be an aluminate ester of lithium hydroxystearate.
Similarly, using an ortho ester of silicon or titanium, the products are, respectively, silicate and titanate esters of hydroxy fatty acid soaps.
As Will be appreciated from the following detailed discussion, the term, an aluminate ester of a fatty acid soap, is inclusive of various individual aluminate esters thereof, such as the dialkoxy aluminate monoester, the monoalkoxy aluminate diester, and the aluminate triester of the soap. The terms, a silicate or titanate ester of these soaps, are similarly inclusive.
Those skilled in the art will appreciate that the transesterification reaction illustrated above may produce a mixture of such mono-, diand triesters, rather than an individual ester, particularly Where the diand triesters are being made. Such mixtures are useful as grease thickeners in the practice of this invention, and are specifically contemplated as included among the presently provided novel products.
Referring to specific products and compounds provided hereby, when M in the above formula is a metal of Group I and from 1 to n moles of a soap of such metal is reacted with an ortho ester, where n is the valence of the metal or metalloid element in the ortho ester, the products will have the formula where R, R, R, M, n, m and M; are as hereinabove defined.
When M is aluminum, these compounds may be designated as aluminate esters of Group I metal hydroxy fatty acid salts. When the fatty acid soap and aluminum ortho ester react in a 1:1 molar ratio, m in the above formula has a value of 1 and n-m, a value of 2. These products are exemplified by lithium 12-hydroxystearate diisopropoxy aluminate ester, lithium 12-hydroxystearate diethoxy aluminate ester, lithium 12-hydroxystearate dibutoxy aluminate ester, lithium 12-hydroxystearate dihexoxy aluminate ester, lithium 12-hydroxystearate bis (2-ethoxyethyl) aluminate ester, lithium 12-hydroxystearate ethoxy butoxy aluminate ester, the diisopropoxy aluminate ester of the soda base soap of l2-hydroxystearic acid, potassium 12-hydroxystearate diisopropoxy aluminate ester, the diisopropoxy aluminate ester of the soda base soap of 8-hydroxystearic acid, the bis-(2- ethoxyethyl) aluminate ester of the soda base soap of 8- hydroxystearic acid, lithium hydroxycaprate diisopropoxy aluminate, lithium 8-hydroxystearate diisopropoxy aluminate, lithium hydroxyarachidate diisopropoxy aluminate, and so forth. Reaction of two moles of the fatty acid soap with one mole of the aluminate ester provides diesters such as the isopropoxy aluminate. diester of lithium 12-hydroxystearate, the isopropoxy aluminate diester of the soda base soap of 12-hydroxystearic acid, the 2- methoxyethyl aluminate diester of lithium 12-hydroxystearate, the isopropoxy aluminate diester of lithium hydroxylaurate, and the butoxy aluminate diester of lithium hydroxypalmitate. When an aluminum ortho ester reacts with three moles of the fatty acid soap, so that all the R"O groups of the ortho ester are removed, m in the above formula is 3, and nm is 0. The products are triesters such as the aluminate triester of lithium 12- hydroxystearate, the aluminate triester of lithium hydroxylaurate, the aluminate triester of the soda base soap of 12-hydroxystearic acid, and so forth.
An aluminate ester of lithium hydroxystearate, especially such an aluminate ester product comprising a major proportion of the aluminate triester of lithium hydroxystearate, is a preferred product in this class of presently provided novel products.
Variation in the individual compounds produced, depending on the ratio of fatty acid soap to ortho ester, similarly occurs when the present compounds are produced from ortho esters of the other elements. Thus, the presently provided silicate esters of Group I metal soaps include 1:1 molar ratio products such as lithium 12-hydroxystearate tributoxy silicate ester, lithium hydroxybehenate triethoxy silicate ester, lithium dimethylhydroxycaprylate trihexoxy silicate ester, potassium 12- hydroxystearate triethoxy silicate ester, the diethoxy butoxy silicate ester of the soda base soap of 8-hydroxystearic acid, lithium 12-hydroxystearate tris(2-ethoxyethyl) silicate ester, and so forth. A 1:2, 1:3, or 1:4 molar ratio gives products such as the diethoxy silicate diester of lithium 12-hydroxystearate, the monoethoxy silicate triester of lithium 12-hydroxystearate, the silicate tetraester of lithium 12-hydroxystearate, the diethoxy silicate diester of the soda base soap of 12-hydroxystearic acid, the diethoxy silicate diester of lithium hydroxypalmitate, the mono(2-butoxyethyl) silicate triester of potassium 12-hydroxystearate, and so forth. The titanate esters include, for example, lithium 12-hydroxystearate trimethoxy titanate ester, the triethoxy titanate ester of the soda base soap of 12-hydroxystearic acid, lithium 12- hydroxystearate tris(2 ethoxyethoxy)titanate, and lith ium 12-hydroxystearate triisopropoxy titanate ester; the dimethoxy titanate diester of the soda base soap of hydroxylauric acid, the diisopropoxy titanate diester of lithium 12-hydroxystearate, and diisobutoxy titanate diester of the soda base soap of hydroxymargaric acid; the monoisopropoxy titanate triester of lithium 12-hydroxystearate, the monoethoxy titanate triester of lithium 12-hydroxystearate, the monoethoxy titanate triester of the soda base soap of hydroxymyristic acid, the titanate tetraester of the soda base soap of hydroxyarachidic acid, the titanate tetraester of lithium 12-hydroxystearate, and so forth.
Referring to the esters of the soaps of hydroxy-substituted fatty acids with Group II and Group III metals provided by this invention, here again the individual prod ucts depend on the ratio in Which the reactants combine. Preferably, in accordance with this invention, each of the hydroxy groups present in the starting material consisting of a hydroxy fatty acid soap will be esterified by reaction With the ortho ester. The ratio of reactants, in terms of the ratio of hydroxy fatty acid radicals present in the soap to ortho ester molecules, may vary from 1:1 to 3:1 or 4:1. As will be appreciated, a divalent metal soap will contain two hydroxy fatty acid radicals and a 1:1 ratio of such a soap to ortho ester will require 2 moles of ortho ester per mole of soap to provide one ortho ester molecule per fatty acid hydroxy radical. For a soap of a Group III metal like aluminum tris(hydroxy fatty acid) soaps, three moles of ortho ester per mole of the soap is needed to produce a 1:1 ratio.
On reaction in such a 1:1 ratio, esterification of the hydroxy groups can occur by displacement of a single one of the ester groups of the ortho ester, giving products of the structure formula, using an aluminate ester of a calcium soap as an example, as
l( )i lD(O CHRC O O)2 fll1/2 As will be evident, the molecular formula corresponding to this will be (R"O)2AIO CHRCO0Ca-OOCRCHOA1(OR") and the products are bis(dialkoxy aluminate) esters of calcium hydroxy fatty acid soaps.
At a ratio of 2 or more hydroxy fatty acid radicals per molecule of ortho ester, to esterify each of the hydroxy groups requires that two or more ester groups be displaced from each ortho ester molecule by hydroxy fatty acid radicals. Depending on whether these are the radicals of the same molecule of soap, or of different soap molecules, the resulting structure may vary. For example, using a 2:1 ratio in reacting a calcium soap with an aluminate ortho ester to produce an ester represented in accordance with the above formula as the product may have a cyclic structure l I R(|3HOAlOCHR R 0 o R l l G-OCa-OO or a polymeric structure containing the repeated units Where reaction takes place at the maximum ratio, which is 3:1 for trivalent metal ortho esters, and 4:1 for tetravalent metal ortho esters, the products may have even more complex structures. In referring to the generic product formula given herein, it is not intended to restrict the present products to any specific structure.
Referring then to aluminate esters of Group II metal soaps, the 1:1 ratio products will include calcium 12- hydroxystearate bis(diisopropoxy aluminate ester), zinc 12-hydroxystearate bis(diisopropoxy aluminate ester), strontium 12-hydroxystearate bis(diisopropoxy aluminate ester), barium 12-hydroxystearate bis(dibutoxy aluminate ester), barium hydroxylaurate bis(dimethoxy aluminate ester), calcium S-hydroxystearate bis(dlibutoxy aluminate ester), zinc hydroxymyristate bis(diethoxy aluminate ester), calcium 12-hydroxystearate bis(diisoheptoxy aluminate ester), zinc S-hydroxystearate bis [bis(2-ethoxyethoxy) aluminate ester], and so forth.
Where the aluminum ortho ester is reacted with the Group II metal soap in a ratio providing two moles of fatty acid hydroxyl groups per mole of ortho ester, the aluminate esters provided may be designated as monoalkoxy aluminate diesters. Exemplary of these are the mono-isobutoxy aluminate diester of calcium 12-hydroxystearate, the mono-isopropoxy aluminate diester of zinc hydroxylaurate, and so forth. Where the ratio is 3:1, the esters obtained include, for example, aluminates which may be referred to as triesters such as. the aluminate triester of calcium 12-hydroxystearate, the aluminate triester of barium hydroxymyristate, the aluminate triester of zinc 12-hydroxystearate, and so forth.
Silicate esters of Group II metal soaps provided by this invention include those wherein from 1 to 4 moles of fatty acid hydroxy groups per mole of silicate ortho ester are reacted to form the present novel products. Exemplary of the 1:1 ratio products are, for example, barium l2-hydroxystearate bis(triethoxy silicate ester), zinc 12-hydroxystearate bis(triethoxy silicate ester), strontium 12- hydroxystearate bis (triethoxy silicate ester), zinc hydroxycarnaubate bis(triethoxy silicate ester), calcium 12-hydroxystearate bis [tris(2-ethoxyethoxy) silicate ester], zinc 8-hydroxystearate bis(trioctoxy silicate ester), and so forth. Where the ratio is 2:1, 3:1 or 4: 1, the compounds provided by this invention include, for example, the diethoxy silicate diester of barium 12-hydroxystearate, the dibutoxy silicate diester of calcium 12-hydroxystearate, the diethoxy silicate diester of calcium hydroxypalmitate, the monethoxy silicate triester of zinc l2-hydroxystearate, and the like.
Exemplary of titanate esters of divalent Group II metal soaps of hydroxy-substituted fatty acids provided by this invention are, calcium IZ-hydroxystearate bis(triethoxy titanate ester), zinc hydroxylaurate bis(tripropoxy titanate ester), calcium 12-hydroxystearate bis(tributoxy titanate ester), zinc l2-hydroxystearate bis(tripropoxy titanate ester), the bis(2-ethoxy) titanate triester of zinc S-hydroxystearate, the titanate tetraester of calcium 12-hydroxystearate, and so forth.
Corning now to the products of reaction of the ortho esters with soaps of hydroxy-substituted fatty acids with metals of Group III, one preferred class of compound of this type is the aluminum-aluminum system, provided by reacting an aluminate ortho ester with an aluminum soap of a hydroxy-substituted fatty acid. Exemplary of these compounds are a 1:1 ratio product such as aluminum tris( l2 hydroxystearate) tris(diisopropoxy aluminate ester) of the formula Use of commercial aluminum 12-hydroxystearate wherein valences of the soap-forming aluminum atom not bonded to the carboxyl radical of the hydroxy-su'bstituted fatty acid are satisfied by anions such as inorganic groups like.
hydroxide, sulfate or the like, may give mixtures of the above-illustrated compound with compounds Where an average of from 1 to 2 of the valences of the salt-forming aluminum radical are satisfied by anions such as sulfate groups. These mixtures and aluminum 12-hydroxystearate (diisopropoxy aluminate ester) disulfate or like ester soaps included therein are also included among the novel products of this invention, and references to alumi num hydroxy fatty acid esters herein should be understood as including all such products Additional alumnium-alurninum systems provided in accordance with this invention comprise for example, 1:1 ratio products like aluminum 12-hydroxystearate dimethoxy aluminate ester, aluminum hydroxylaurate diethoxy aluminate ester, aluminum hydroxybehenate dibutoxy aluminate ester, aluminum hydroxypalmitate dihexoxy aluminate ester, aluminum IZ-hydroxystearate dioctoxy aluminate ester, aluminum 12-hydroxystearate bis(2-methoxyethoxy) aluminate ester, and so forth; 2:1 ratio products such as the monoisopropoxy aluminate diester of aluminum l2-hydroxystearate; and 3:1 ratio products such as the aluminate triester of aluminum 12- hydroxystearate, the aluminate triester of aluminum dimethylhydroxycaprate, and so forth.
Silicate esters of Group III salts of hydroxy-substituted fatty acids provided by this invention include, for example, aluminum 12-hydroxystearate triethoxy silicate ester, aluminum hydroxyarachidate tripropoxy silicate ester, the dibutoxy silicate diester of aluminum hydroxydimethylcaprylate, the tris(2-ethoxyethoxy) silicate monester of aluminum S-hydroxystearate, the silicate tetraester of aluminum 12-hydroxystearate, and so forth.
Other esters of salts of Group III metals provided hereby include aluminum lZ-hydroxystearate tris[2-(2-ethoxyethoxy)ethoxy] titanate ester, aluminum 12-hydroxystearate triethoxy titanate ester, the di'butoxy titanate diester of aluminum l2-hydroxystearate, the titanate tetraester of aluminum hydroxylaurate, and so forth.
A general formula for the products provided by this invention, including the above as well as additional esters described hereinafter, is as follows:
I (OCHROOOhh/P-Y (RgO),, M 3g 2 (R30) a; y
Where a a and a are integers each selected individually from O and l, a +a +a =nm, R R and R are each selected individually from the group consisting of hydrocarbon and halo-hydrocarbon radicals of from 1 to 18 carbon atoms, and M, M, R, R, Y, m, n, x and y are as hereinabove defined.
It has been stated above that the present esters of hydroxy fatty acid soaps are preferably made in accordance with this invention by transesterification of an ortho ester of the formula (RO) M', where R" is alkyl or alkoxyalkyl of l to 8 carbon atoms, and M is Al, Si or Ti, with the fatty acid soap.
By transesterifiying such an ortho ester with the hydroxy fatty acid soap and also with one or more alcohols in which the radical attached to the alcohol hydroxy group is hydrocarbon, hydrocarbonoxyhydrocarbon, or halogenated hydrocarbon or hydrocarbonoxyhydrocarbon of l to 18 carbon atoms, esters of the above-illustrated formula may be produced.
The stated alcohol may be a hydroxy-hydrocarbon, including saturated aliphatic alcohols such as higher alkanols like isooctyl, nonyl, hexadecyl and octadecyl alcohols, and cycloalkanols like cyclohexanol; glycols like ethylene glycol; and aromatic, including aralkyl and alkaryl, alcohols like phenol, benzyl alcohol and so forth. It may be hydrocarbon-oxy-hydrocarbon, that is, an ether alcohol, such as diethylene glycol butyl ether, guaiacol, p-phenoxyphenol, and so forth. The lower alkanols and alkoxy-alkanols, like ethanol and 2-ethoxyethanol, could be used, but since the ortho esters already contain lower alkoxy radicals, generally no advantage would be gained.
The stated alcohol can also be a halogenated derivative of one of the stated types of alcohols. The halogen present therein will preferably be relatively stable and inert; it may be bromine, chlorine or fluorine. Halogenated alcohols wherein the hydrocarbon radical contains few or no hydrogen atoms, are preferred. Exemplary of lower haloalkanols of this class are pe-rfluoroethanol, perchloroethanol, perbromoethanol, trifluoroethanol, trifluorobromochloroethanol, tetrafluoropropanol, pentafluoropropanol, perfluoropropanol, perfluorobutanol, perchlorocyclopentanol, perfluorohexanol, decafluorohexanol, nonofiuoro-2-ethoxyethanol, and the like. Illustrative of the higher haloalkanols, which are preferred in the present connection, are heptanols substituted by from 12 to 15 fluorine atoms, nonanols substituted by from 16 to 19 fluorine atoms, undecanols substituted by from 20 to 23 fluorine atoms, tridecanols substituted by from 24 to 27 fluorine atoms, perfluorohexadecanol, perchlorinated and perfluoroinated diethylene glycol butyl ether, perbromohexanol, and so forth. Cycloalkanols such as perchlorocyclohexanol may also be used, as may aromatic alcohols such as pentachlorophenol and the like.
Referring to the products obtained in this embodiment of the invention, when the stated alcohol is an alkanol (including ether alkanols) and it is reacted with an aluminate ester of a hydroxy fatty acid soap, the product is an alkoxy aluminate ester of the fatty acid soap. For
1% example, it may be an isooctoxy aluminate ester of lithium hydroxystearate, a hexadecoxy aluminate ester of the soda base soap of hydroxystearic acid, a 2-[2-(2-butoxy) ethoxy] ethoxy aluminate ester of lithium hydroxystearate, and so forth.
Similarly, combining such an alkanol with products such a the titanate and silicate esters of hydroxy fatty acid soaps as described above yields products such as an octoxy silicate ester of lithium hydroxystearate, a dodecoxy silicate ester of lithium hydroxystearate, a decoxy titanate ester of lithium hydroxystearate, an octadecoxy borate ester of lithium hydroxystearate, and so forth.
Additional products of hydroxy-hydrocarbons and ether alcohols provided hereby include, for example, a cyclohexoxy aluminate ester of lithium hydroxystearate, a glycol diester of an aluminate ester of lithium hydroxystearate, a phenoxy aluminate ester of the soda base soap of hydroxystearic acid, a benzyloxy silicate ester of lithium hydroxypalmitate, an isopropoxyphenoxy silicate ester of lithium hydroxystearate, and so forth.
Referring to products obtained from haloalkanols, these include as preferred products fluoroalkoxy esters such as a trifluoroethoxy aluminate ester of lithium hydroxystearate, a heptafluoro-2-methoxyethoxy aluminate ester of sodium hydroxystearate, a perfiuoro-pentoxy silicate ester of lithium hydroxystearate, a hexadecafluorononoxy silicate ester of aluminum hydroxystearate, a perfluorobutandioxy silicate ester of lithium hydroxystearate, a dodecafluoroheptoxy titanate ester of lithium hydroxystearate, a dodecafluoroheptoxy aluminate ester of lithium hydroxystearate, a perfluorotridecoxy aluminate ester of aluminum hydroxystearate, and so forth; as well as other haloalkoxy esters such as tribromomethoxy aluminate ester of sodium hydroxystearate, a perchlorocyclohexoxy aluminate ester of lithium hydroxystearate, a perbromoethoxy silicate ester of lithium hydroxystearate, a bromochlorodecoxy silicate ester of lithium hydroxystearate, a perbromohexoxy titanate ester of aluminum hydroxystearate, and so forth.
Illustrative of products obtainable from halogenated aryl alcohols are haloaryloxy esters such as a pentachlorophenoxy aluminate ester of lithium hydroxystearate, a pentachlorophenoxy silicate ester of lithium hydroxystearate, a trifiuoromethylphenoxy silicate ester of aluminum hydroxystearate, a phenyltetrafiuoroethoxy silicate ester of lithium hydroxystearate, a pentachlorophenoxy titanate ester of lithium hydroxystearate and the like.
The stated alcohol may provide from 1 to all of the ortho ester radicals not esterified by the hydroxy fatty acid soap. Where it does provide less than all, one or two of the ester radicals of the original ortho ester may remain present in the product. For example, a fluoroheptoxy aluminate ester of lithium hydroxystearate includes the di(fluoroheptoxy) aluminate and mono (fluoroheptoxy) mono-substituted (such as mono-isopropoxy) aluminate mono-esters of lithium hydroxystearate, as well as the mono(fluoroheptoxy) aluminate diester of lithium hydroxystearate. It is to be understood that the preceding list of illustrative esters includes each of such individual species.
Considering now the preparation of the above-discussed novel compounds, the method provided by this invention comprises contacting the selected ortho ester of an element selected from A1, Si and Ti with the selected hydroxy-substituted fatty acid soap of a metal of Groups I-III, as set forth hereinabove, in a solvent. The ratios in which the ortho ester and the hydroxy-substituted fatty acid soap are contacted will, as will be evident from the preceding discussion, depend on the nature of the product desired. At least sufficient ortho ester will be present to permit esterification of each of the hydroxy groups present in the fatty acid radicals of the hydroxy fatty acid soap. Thus, at least about one-third mole of an aluminum ortho ester and at least about one-fourth mole of a silicon or titanium ortho ester will be employed per mole of hydroxy fatty acid radicals. Preferably, to provide the 1:1 ratio compounds discussed above, the reaction mixtures will comprise about 1 mole of the ortho ester per mole of hydroxy fatty acid radical. In calculating these ratios, a mole of a soap containing one hydroxy fatty acid radical per atom of soap-forming metal will be regarded as providing one mole of hydroxy fatty acid radical, one mole of a soap containing two hydroxy fatty acid radicals per atom of the soap-forming metal will be regarded as providing two moles of hydroxy fatty acid, and so forth.
The solvent to be employed in preparing the novel compounds of this invention should be a substantially inert fluid which dissolves or is miscible With the reactants employed. Suitable solvents, for example, comprise an aromatic hydrocarbon such as toluene or xylene, an aliphatic hydrocarbon such as a petroleum fraction or cyclohexane, or a non-hydrocarbon solvent such as morpholine, 'dimethyl formamide, pyridine, or the like. Generally it is preferred that the solvent have a moderately high boiling point, on the order of about 100 C. or above.
To effect formation of the presently provided novel compounds, the reactants will be contacted in the solvent for a time and at a temperature sufiicient to permit at least a substantial proportion of the fatty acid hydroxyl radicals to become esten'fied by the ortho ester. This reaction may take place at room temperature or below. It can and generally will be accelerated by heating. Temperatures to be employed in such case may range from just above about room temperature to any temperature below the decomposition temperature of the reaction mixture components.
The reaction by which the hydroxy group of the hydroxy-substituted fatty acid salt is esterified by the ortho ester involves displacement of an alkoxy group from the ortho ester. This alkoxy group forms an alcohol. The reaction may accordingly advantageously :be conducted at a temperature such that the alcohol formed by this transesterification is evolved from the reaction mixture. By measurement of the amount of such alcohol evolved, the reaction can be followed so as to control the extent of esterification of the metal ortho ester by the hydroxysubstituted fatty acid.
Operation at atmospheric pressure i ordinarily preferred but elevated or decreased pressure can be used where necessary. Generally the pressure is desirably such that the alcohol formed is allowed to distill off but sufficient to maintain the reactants in the liquid phase.
Catalysts are not necessary for the present reaction but may sometimes be used advantageously. Useful catalysts for transesterificat-ion are generally bases. The ortho ester may be sufiiciently basic to catalyze the reaction itself. Catalysts which may be used include alkoxides of alkali metals, such as sodium methoxide, potassium methoxide, sodium ethoxide and so fonth; and alkalies such as sodium, lithium and potassium hydroxide, sodium bicarbonate, or the like.
During the heating of the reaction mixture, the product comprising the ester of the soap of the fatty acid separates. The present products are substantially insoluble in a solvent like Xylene, and the xylene can be separated therefrom to a major degree by simply pressing, for example. Isolation of the product can be effected by evaporating off the solvent, which may be done under vacuum, for example. The isolated products are generally crystalline materials, which are adopted for incorporation into an oleaginous base fluid, as set forth hereinafter.
While the foregoing is the preferred method of synthesis of these novel compounds provided by this invention, it will 'be appreciated that alternative procedures may sometimes be followed. For example, the ortho ester may be first reacted with a hydroxy-substituted fatty acid compound such as the hydroxy-substituted fatty acid itself, or an ester thereof, to esterify the hydroxy group, and the resulting ester thereafter converted to a soap by 12 reaction with a soap-forming metal compound such as a metal hydroxide.
While pre-forming of the complex soap is the preferred procedure, it is to be noted that the ester soap may also be formed in a lubricating oil base in situ, particularly when non saponifiable inert oils such as mineral oils or non-hydrolyzable synthetic oils are used. For this purpose, the reactants will be dissolved in a portion of the lubricating oil base and reacted at the necessary temperature. When the reaction is complete, additional lubricating oil fluid may be added and the mixture may be milled or otherwise treated to disperse the ester soaps through the whole mixture to provide a grease.
In practicing the embodiment of this invention using an alcohol as a reactant, in addition to the ortho ester and hydroxy fatty acid soap, it is preferred to form the ortho ester of the hydroxy fatty acid soap first, and then to react it with the alcohol. Advantageously, the alcohol will simply be added to the hydroxy fatty acid soap ester prior to its isolation from the reaction mixture. The amount of alcohol required to displace all the alkoxy radicals from the soap ester will equal nm moles per mole of soap ester, where n and m have the values stated above. Preferably, the a1cohol:soap ester molar ratio will be about 1:1, but it may range from 0.121 up to 10:1. Reaction conditions substantially as described above may be used to effect reaction of the alcohol with the ester of the soap, and isolation of the product can also be accomplished similarly.
To provide the lubricating grease compositions of this invention where the ester soap is not formed in situ in the oleaginous base fluid in which it is to the used, it will be dispersed therein, generally after isolation from the solvent in which it is prepared, in grease-making proportions. The concentration required to thicken the lubricating base fluid to a grease will vary, depending on the selected compound. In accordance with this invention, it may be as low as about 0.5% by weight of the total grease, and still give effective thickening. Proportions up to about 40%, or even 70%, by weight of the total, of thickener in a lubricating base fluid are frequently used. Generally with the particularly effective thickeners of this invention, a proportion up to about 15% will be found satisfactory to provide grease consistencies. However higher concentrations may be used if desired.
It may be advantageous to prepare concentrates of the ester soaps, adapted for dilution at the point of use. Such concentrates will generally comprise a lubricating base fluid as a liquid medium for the thickener, but the liquid medium may instead be another fluid compatible with the type of lubricating base fluid with which it is to be combined if desired, such as an alcohol or the like. The concentration of the presently provided novel thickener in a concentrate composition will generally be at least about 40% by weight of the total, and may be as high as or even by weight of the total if desired.
The new ester soaps of this invention may also be combined with conventional soap thickeners. In such cases, the novel ester. soaps provided hereby should preferably comprise at least one-third of the total soap and thus comprise at least about (HS-0.20% by weight of the grease.
Methods of dispersing thickeners in lubricating base fluids to provide greases are well known in the art, and conventional methods therefor may be used in employing the compounds of this invention as thickeners.
The lubricating grease compositions provided in accordance with this invention will comprise an oleaginous base fluid compounded with a thickening amount of one or more of the ester soaps provided hereby.
The oleagin-ous base used in the compositions may be selected from a wide variety of natural or synthetic lubricant oils. Thus for example, natural oils can advantageously be employed. Illustrative of such natural oleaginous bases are mineral oils "such as naphthene and paraflin base oils, vegetable oils such as cotton seed oil and castor oil; animal and marine oils such as sperm whale oil, lard oil, blown fish oil and degras; and mixtures thereof. Of the natural oil bases, mineral oils are preferred. A typical mineral oil base for extreme pressure lubrication will be characterized by a viscosity of 35-350 Saybolt Universal seconds at 210 F., a viscosity index in the range of from -25 to 150, and a flash point point of between about 275 and 600 F.
Polyorganosiloxanes, also known as silicones, or silicone polymers, comprise one class of synthetic lubricant bases of commercial importance which may be improved in properties to a substantial degree by modification in accordance with this invention. Polysiloxanes are compounds comprising essentially silicon atoms connected to one another by oxygen atoms. In liquid polyorganosiloxanes, or silicones, of the lubricating oil viscosity range, a preponderant number of the remaining valences of the silicon atoms are satisfied by the substitution thereon of organic radicals, attached by a carbon-to-silicon bond. Examples of such organic radicals are aliphatic radicals including alkyl radicals such as methyl, ethyl, propyl, butyl, and so forth; alicyclic radicals such as phenyl, cyclohexyl, diphenyl, anthracyl, naphthyl, and so forth; aralkyl radicals such as benzyl and alkaryl radicals such as tolyl, xylyl, and so forth; and the like. Relatively common oils of this type are dimethylsilicone polymer, phenylmethylsilicone polymer, chlorophenylmethylsilicone polymer, and so forth. Of particular utility for lubricating purposes are silicones in which the silicon atoms are substituted by two different organic radicals, e.g., methyl and phenyl radicals. Especially eflective properties have been obtained when the organic radicals substituted on the silicon atoms in the silicone polymers are in turn substituted by halogen atoms, especially chlorine atoms. Thus for example, the silicone may be substituted by chlorophenyl radicals such as dichlorophenyl, trichlorophenyl and tetrachloro phenyl radicals, other valences of the silicon atoms being satisfied by the hydrocarbon radicals such as methyl radicals or the like. As is well known in the art, the silicones intended for use as oleaginous bases will desirably contain an average of from 1.9 to 2.67 organic groups per silicon atom. Remaining valences, if any, of the silicon atoms may be satisfied by radicals attached to the silicon atoms in the compounds from which the silicone polymers are prepared, such as hydrolyzable organo-substituted silanes; or by the product of hydrolysis of such radicals, such as hydroxide radicals.
Another class of synthetic oleaginous bases of particular interest in the practice of the present invention comprises organic polyesters. On the one hand, these may comprise esters of polycarboxylic acids, such as dicarboxylic acid diesters. Thus for example, such synthetic ester lubricants may have the general formula R(COOR (COOR where R is an aliphatic or cy-cloaliphatic hydrooarbon radical of from 2 to 8 carbon atoms and R and R are the same or different and are branched chain alkyl or alkyl-substituted cycloalkyl radicals of at least 4 carbon atoms. Such esters may be derived from succinic, maleic, pyrotartaric, glutaric, adipic, pimelic, suberic, azelaic, sebacic, pinic, thiopropionic or oxypropionic acids or the like, specific esters of this nature including for example di( l-methyl 4 ethyloctyl) glutarate, di(2-ethylhexyl)oxydibutyric acid, di(2-ethylhexyl)adipate, di(3- methylbutyl)azelate, di(2-ethylhexyl)azelate, di(Z-ethylhexyl)sebacate, di(3,5,5 trimethylhexyl)sebacate, di(2- ethylhexyl)maleate, di(methylcyclohexyl) adipate, 2-ethylhexyl l-methylhexyl sebacate and the like. Alternatively, instead of derivation from a polycarboxylic acid, the polyester synthetic oleaginous bases may be produced by reacting a polyhydric alcohol with a monocarboxylic acid. Thus for example, a polyhydric alcohol such as ethylene glycol or pentaerythritol is esterified with an acid of relatively long chain length such as caproic, pelargonic,
capric, lauric, myristic, palmitic' or stearic acid, to produce a polyester of lubricating oil viscosity. Specific examples of such polyesters derived from polyols are pentaerythritol tetrapelargonate, pentaerythritol tetracaprate, pentaerythritol tetrapalmitate, pentaerythritol tetrastearate, ethylene glycol divalerate, diethylene glycol dicaprate, propylene glycol dicaprylate, and so forth. Another type of synthetic polyester lubricants which may be used as oleaginous bases in accordance with this invention Will be complex esters obtained by esterifying a polycarboxylic acid with a diol, together with a monohydric alcohol and/or a monocarboxylic acid. Thus, complex esters which may be employed as oleaginous bases may be obtained by esterifying one mole of a dicarboxylic acid with 2 moles of a glycol and 2 moles of a monocarboxylic acid; or by esterifying one mole of a dicarboxylic acid with one mole each of a glycol, a monocarboxylic acid and a monohydric alcohol. Specific examples of a suitable complex ester are the ester prepared from one mole of ethylene glycol, two moles of sebacic acid and two moles of 2-ethylhexanol; and the ester prepared from one mole of triethylene glycol, one mole of adipic acid, one mole of n-caproic acid and one mole of 2-ethylhexanol.
In addition to the above-mentioned classes of synthetic lubricating base stocks comprising types of present major commercial importance, there are a number of other oleaginous bases which can be used if desired in the practice of this invention. Thus for example, such lubricant bases may comprise hydrocarbon oils prepared by polymerization of unsaturated hydrocarbons. Polyethers of the nature of high molecular weight polyoxyalkylene compounds, derived, for example, from ethylene oxide, propylene oxide and the like substances, form another useful class of lubricant bases, and similarly, there may be employed oleaginous bases of related structure, such as propylene oxide-tetrahydrofuran copolymers, and polyaryl ethers. Besides the silicones discussed above, additional silicon derivatives of interest in this connection comprise silanes, silphenylenes, organosilicates and disiloxanes such as hexaalkoxydisiloxanes of lubricating oil viscosity. Other synthetic oleaginous bases Which may be mentioned include fluorocarbon oils such as perfluorinated petroleum oils; tetra-substituted ureas; and esters such as dimethylcyclohexyl phthalate, trioctyl phosphate; and similar fluids adapted for lubricant applicatrons.
Mixtures of oleaginous bases may sometimes be preferred to any single lubricant fluid, and are included in the scope of this invention.
Other conventional grease additives such as anti-oxidants, extreme pressure agents, structure stabilizers or viscosity improvers and so forth may also be included with the compounds of this invention.
The invention is illustrated but not limited by the following examples.
Example I 1228 grams (4 moles) of lithium hydroxystearate, 832 grams (4 moles) of tetraethyl silicate, 7000 ml. of xylene and 5 grams of sodium methoxide are mixed in a 3- necked flask. This mixture is heated with rapid agitation to a pot temperature of C. The reaction mixture is held at 140 C. until 235 cc. of distillate, boiling at 7882 C., is collected. The pot contents are then transferred to a resin kettle, and stripped of solvent over a steam bath at 1.0 mm. pressure. The residual solid is dried in a forced draft oven at 250 F. and ground to a powder. The product is a silicate ester of lithium hydroxystearate, comprising lithium hydroxystearate triethoxy silicate ester. It is a white solid melting at 200 C. A yield of 1236 grams (63.5% of theory) is obtained.
Example II 462 grams (0.5 mole) of commercial aluminum hydroxystearate, comprising aluminum tris(12-hydroxystearate), 312 grains (1.5 moles) of tetraethyl silicate, 4800 m1. of xylene and 1.6 grams of sodium methoxide are mixed in a 3-necked flask and heated to a'pot temperature of 125 --130"* 87 cc. of distillate evolved and collected during a hotir period; The resultant mixture is stripped of xylene over a steam bath at 0.1-.5 mm. pressure. The solid residue is dried in a forced draft oven at 250 F. A yield of 519 grams (73.5% of theory) of a silicate ester of aluminum hydroxystearate, comprising aluminum tris (hydroxystear-ate) tris(triethoxy silicate ester), is obtained, as a white solid melting at 262 C.
Example 111 277 grams (0.3 mole) of aluminum hydroxystearate, as described in Example II, 187 grams (0.9 mole) of tetraethyl silicate, 2800 ml. of xylene and 1.0 gram of sodium methoxide are mixed in a 3-necked flask and heated to apot temperature of 125130 C. 47 cc. of distillate is evolved and collected in a two hour period. 896 grams (2.7 moles) of dodecafluoroheptyl alcohol is added and the heating is continued at 125- 130 C. until an additional 130 cc. of distillate is removed. The resultant material is filtered. The filtrate is stripped of volatiles over a steam bath at 0.54.0 nun. pressure. The residue is then dried in a forced draft oven at 250 F. The yield is 228 grams (20% theory) of a fluoroheptoxy silicate ester of aluminum hydroxystearate, comprising aluminum tris(hydroxystearate) tris[tris(dodecafluoroheptoxy) silicate ester], melting at 239 C.
Example 1V 184.2 grams (0.6 mole) of lithium hydroxystearate, 42.6 grams (0.15 mole) of tetraisopropyl titanate, 2000 ml. of exylene and 0.5 gram of sodium me-thoxide are mixed in a 3-necked flask. The mixture is heated to 125 C. while agitating vigorously. 45 cc. of distillate is removed at a temperature of 80-85 C. over a two hour period. After cooling, the reaction mixture is poured into 2000 ml. of acetone. The white precipitate is filtered off and dried in a forced draft oven at 220 F. The product is a titanate ester of lithium hydroxystearate, comprising the titanate tetraester of lithium hydroxystearate. It is a white crystalline solid melting at 270 C. A yield of 194 grams (97.5% of theory) is obtained.
Example V 154 grams (0.15 mole) of aluminum hydroxystearate,
' as described in Example II, 91.8 grams (0.45 mole) of aluminum triisopropoxide, 3000 cc. of xylene and 0.2
gram of sodium methoxide are mixed in a S-necked flask Example VI 921 grams (3.0 moles) of lithium hydroxystearate, 204 grams (1.0 mole) of aluminum triisopropoxi-de and 4500 ml. of xylene are mixed in a 3-necked flask and gradually heated to 130 C. 225 cc. of isopropyl alcohol is evolved and collected over an 23-hour period. The re- 16 action is then stripped of xylene over a steam bath at 0.2-1.0 mm. pressure. The product is finally dried in a forced draft oven at 225 F. A yield of 933 grams (99% of theory) of aluminate ester of lithium hydroxystearate, comprising the aluminate triester of lithium hydroxystearate, m. 274 C., is obtained.
Example V11 Penetration (ASTM) 270 Dropping point, F. 380
This falls within the range defined as a #2 grease on the National Lubricating Grease Institute scale. Such a grease is suitable for lubricating systems operating at relatively moderate speeds and loads, such as vane pumps, serving machines, and the like. Using a heavier 00, 21 #2 grease can be produced which is suitable for use at higher loads.
To produce a #2 grease using lithium hydroxystearate itself, not esterified as provided by this invention, re quires the use of 10% by weight of the total in a grease prepared as described above, using the same mineral oil. Thus the ester of this invention has approximately half again as potent a thickening power as the unesterified soap, for the same weight of material; calculated on the molar content of oxystearate radicals, it is even more potent.
Using 10% of the product of Example VI in the same oil will produce a thicker grease, of a #3 grade, suitable for use in slower-moving systems than #2 grade.
While the invention has been described with reference to various particular preferred embodiments thereof, it is to be appreciated that modifications and variations can be made within the scope of the preceding specification and the following claims.
What is claimed is:
1. A11 alkoxy silicate ester of a metal soap of monohydroxystearic acid in which said metal is selected from the group consisting of sodium, potassium, lithium, calcium, zinc, strontium, barium and aluminum and each alkoxy group contains from 1 to 8 carbon atoms.
2. An alkoxy silicate ester of a lithium soap of monohydroxystearic acid in which each alkoxy group contains from 1 to 8 carbon atoms.
3. An alkoxy silicate ester of the lithium soap of 12- hydroxystearic acid in which each alkoxy group contains from 1 to 8 carbon atoms.
4. Aluminate triester of lithium monohydroxystearate.
5. Titanate tetraester of lithium monohydroxystearate.
References Cited by the Examiner UNITED STATES PATENTS 2,215,429 9/ 1940 Schmidt et :al. 260429.5 XR 2,871,135 1/1959 Weiss 260-448 XR CHARLES B. PARKER, Primary Examiner.
ANTON H. SUTTO, Assistant Examiner,
Claims (3)
1. IN ALKOXY SILICATE ESTER OF A METAL SOAP OF MONOHYDROXYSTEARIC ACID IN WHICH SAID METAL IS SELECTED FROM THE GROUP CONSISTING OF SODIUM, POTASSIUM, LITHIUM, CALCIUM, ZINC, STRONTIUM, BARIUM AND ALUMINUM AND EACH ALKOXY GROUP CONTAINS FORM 1 TO 8 CARBON ATOMS.
4. ALUMINATE TRIESTER OF LITHIUM MONOHYDROXYSTEARATE.
5. TITANATE TETRAESTER OF LITHIUM MONOHYDROXYSTERATE.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US279313A US3287384A (en) | 1961-01-11 | 1963-05-09 | Ortho esters of aluminum, silicon or titanium with a metal soap of a hydroxy-fatty acid |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US81955A US3158573A (en) | 1961-01-11 | 1961-01-11 | Metal esters |
US279313A US3287384A (en) | 1961-01-11 | 1963-05-09 | Ortho esters of aluminum, silicon or titanium with a metal soap of a hydroxy-fatty acid |
Publications (1)
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US3287384A true US3287384A (en) | 1966-11-22 |
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Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US279313A Expired - Lifetime US3287384A (en) | 1961-01-11 | 1963-05-09 | Ortho esters of aluminum, silicon or titanium with a metal soap of a hydroxy-fatty acid |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3514402A (en) * | 1966-12-01 | 1970-05-26 | Ruhrchemie Ag | Synthetic lubricants containing trimethylol - alkane - di - ortho-silicic acid esters |
US4072699A (en) * | 1973-03-28 | 1978-02-07 | Merkl George | Aluminum organoiodides |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2215429A (en) * | 1931-05-30 | 1940-09-17 | Winthrop Chem Co Inc | Metal compounds of aliphatic polyhydroxy monocarboxylic acids and process of making them |
US2871135A (en) * | 1955-08-24 | 1959-01-27 | Richard Nilsson Aktiebolag | Method for producing drying oils and the oil so produced |
-
1963
- 1963-05-09 US US279313A patent/US3287384A/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2215429A (en) * | 1931-05-30 | 1940-09-17 | Winthrop Chem Co Inc | Metal compounds of aliphatic polyhydroxy monocarboxylic acids and process of making them |
US2871135A (en) * | 1955-08-24 | 1959-01-27 | Richard Nilsson Aktiebolag | Method for producing drying oils and the oil so produced |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3514402A (en) * | 1966-12-01 | 1970-05-26 | Ruhrchemie Ag | Synthetic lubricants containing trimethylol - alkane - di - ortho-silicic acid esters |
US4072699A (en) * | 1973-03-28 | 1978-02-07 | Merkl George | Aluminum organoiodides |
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