JP2016176015A - Lubricant composition - Google Patents
Lubricant composition Download PDFInfo
- Publication number
- JP2016176015A JP2016176015A JP2015057942A JP2015057942A JP2016176015A JP 2016176015 A JP2016176015 A JP 2016176015A JP 2015057942 A JP2015057942 A JP 2015057942A JP 2015057942 A JP2015057942 A JP 2015057942A JP 2016176015 A JP2016176015 A JP 2016176015A
- Authority
- JP
- Japan
- Prior art keywords
- group
- lubricating oil
- molybdenum
- composition
- oil composition
- 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.)
- Granted
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 70
- 239000000314 lubricant Substances 0.000 title abstract description 5
- 239000002199 base oil Substances 0.000 claims abstract description 29
- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 239000005078 molybdenum compound Substances 0.000 claims abstract description 17
- 150000002752 molybdenum compounds Chemical class 0.000 claims abstract description 17
- 239000003921 oil Substances 0.000 claims abstract description 17
- 239000011701 zinc Substances 0.000 claims abstract description 14
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000002480 mineral oil Substances 0.000 claims abstract description 8
- 235000010446 mineral oil Nutrition 0.000 claims abstract description 8
- WMYJOZQKDZZHAC-UHFFFAOYSA-H trizinc;dioxido-sulfanylidene-sulfido-$l^{5}-phosphane Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S WMYJOZQKDZZHAC-UHFFFAOYSA-H 0.000 claims abstract description 8
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 5
- 239000010687 lubricating oil Substances 0.000 claims description 52
- 150000001875 compounds Chemical class 0.000 claims description 19
- 229920000193 polymethacrylate Polymers 0.000 claims description 10
- 239000003575 carbonaceous material Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 abstract description 10
- 239000002184 metal Substances 0.000 abstract description 10
- 239000000446 fuel Substances 0.000 abstract description 7
- 150000002739 metals Chemical class 0.000 abstract description 3
- -1 trimellitic acid ester Chemical class 0.000 description 32
- 229910052717 sulfur Inorganic materials 0.000 description 16
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 15
- 125000004432 carbon atom Chemical group C* 0.000 description 15
- 125000000217 alkyl group Chemical group 0.000 description 14
- 239000011593 sulfur Substances 0.000 description 14
- 239000000178 monomer Substances 0.000 description 11
- 150000002430 hydrocarbons Chemical class 0.000 description 9
- 239000002904 solvent Substances 0.000 description 9
- 229910052750 molybdenum Inorganic materials 0.000 description 7
- 239000011733 molybdenum Substances 0.000 description 7
- 238000007670 refining Methods 0.000 description 7
- 230000007423 decrease Effects 0.000 description 6
- 239000003599 detergent Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000001993 wax Substances 0.000 description 6
- 239000000654 additive Substances 0.000 description 5
- 125000003118 aryl group Chemical group 0.000 description 5
- 239000002585 base Substances 0.000 description 5
- 239000000470 constituent Substances 0.000 description 5
- 239000010779 crude oil Substances 0.000 description 5
- 230000001050 lubricating effect Effects 0.000 description 5
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 4
- 238000004517 catalytic hydrocracking Methods 0.000 description 4
- 239000004927 clay Substances 0.000 description 4
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 4
- KHYKFSXXGRUKRE-UHFFFAOYSA-J molybdenum(4+) tetracarbamodithioate Chemical compound C(N)([S-])=S.[Mo+4].C(N)([S-])=S.C(N)([S-])=S.C(N)([S-])=S KHYKFSXXGRUKRE-UHFFFAOYSA-J 0.000 description 4
- 125000004430 oxygen atom Chemical group O* 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- AFFLGGQVNFXPEV-UHFFFAOYSA-N 1-decene Chemical compound CCCCCCCCC=C AFFLGGQVNFXPEV-UHFFFAOYSA-N 0.000 description 3
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 3
- 125000002877 alkyl aryl group Chemical group 0.000 description 3
- 125000002947 alkylene group Chemical group 0.000 description 3
- 238000004821 distillation Methods 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002751 molybdenum Chemical class 0.000 description 3
- VLAPMBHFAWRUQP-UHFFFAOYSA-L molybdic acid Chemical compound O[Mo](O)(=O)=O VLAPMBHFAWRUQP-UHFFFAOYSA-L 0.000 description 3
- 150000007524 organic acids Chemical class 0.000 description 3
- 150000002894 organic compounds Chemical class 0.000 description 3
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical class O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 description 3
- PTISTKLWEJDJID-UHFFFAOYSA-N sulfanylidenemolybdenum Chemical class [Mo]=S PTISTKLWEJDJID-UHFFFAOYSA-N 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- XYRMLECORMNZEY-UHFFFAOYSA-B [Mo+4].[Mo+4].[Mo+4].[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S Chemical compound [Mo+4].[Mo+4].[Mo+4].[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S XYRMLECORMNZEY-UHFFFAOYSA-B 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 150000001447 alkali salts Chemical class 0.000 description 2
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- 150000001412 amines Chemical group 0.000 description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000007334 copolymerization reaction Methods 0.000 description 2
- QXYJCZRRLLQGCR-UHFFFAOYSA-N dioxomolybdenum Chemical compound O=[Mo]=O QXYJCZRRLLQGCR-UHFFFAOYSA-N 0.000 description 2
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Chemical compound C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 description 2
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 2
- 125000003187 heptyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000000623 heterocyclic group Chemical group 0.000 description 2
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 150000004678 hydrides Chemical class 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 125000002960 margaryl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 2
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 2
- 125000001421 myristyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000004433 nitrogen atom Chemical group N* 0.000 description 2
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 235000005985 organic acids Nutrition 0.000 description 2
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 125000002958 pentadecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000000446 sulfanediyl group Chemical group *S* 0.000 description 2
- 125000004434 sulfur atom Chemical group 0.000 description 2
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 2
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 2
- 125000002889 tridecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000002948 undecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 238000005292 vacuum distillation Methods 0.000 description 2
- 125000006702 (C1-C18) alkyl group Chemical group 0.000 description 1
- UUGXDEDGRPYWHG-UHFFFAOYSA-N (dimethylamino)methyl 2-methylprop-2-enoate Chemical compound CN(C)COC(=O)C(C)=C UUGXDEDGRPYWHG-UHFFFAOYSA-N 0.000 description 1
- OBDUMNZXAIUUTH-HWKANZROSA-N (e)-tetradec-2-ene Chemical group CCCCCCCCCCC\C=C\C OBDUMNZXAIUUTH-HWKANZROSA-N 0.000 description 1
- QMMJWQMCMRUYTG-UHFFFAOYSA-N 1,2,4,5-tetrachloro-3-(trifluoromethyl)benzene Chemical compound FC(F)(F)C1=C(Cl)C(Cl)=CC(Cl)=C1Cl QMMJWQMCMRUYTG-UHFFFAOYSA-N 0.000 description 1
- RMSGQZDGSZOJMU-UHFFFAOYSA-N 1-butyl-2-phenylbenzene Chemical group CCCCC1=CC=CC=C1C1=CC=CC=C1 RMSGQZDGSZOJMU-UHFFFAOYSA-N 0.000 description 1
- SJIXRGNQPBQWMK-UHFFFAOYSA-N 2-(diethylamino)ethyl 2-methylprop-2-enoate Chemical compound CCN(CC)CCOC(=O)C(C)=C SJIXRGNQPBQWMK-UHFFFAOYSA-N 0.000 description 1
- JKNCOURZONDCGV-UHFFFAOYSA-N 2-(dimethylamino)ethyl 2-methylprop-2-enoate Chemical compound CN(C)CCOC(=O)C(C)=C JKNCOURZONDCGV-UHFFFAOYSA-N 0.000 description 1
- LLEFDCACDRGBKD-UHFFFAOYSA-N 2-ethyl-2-(hydroxymethyl)propane-1,3-diol;nonanoic acid Chemical compound CCC(CO)(CO)CO.CCCCCCCCC(O)=O LLEFDCACDRGBKD-UHFFFAOYSA-N 0.000 description 1
- MNZNJOQNLFEAKG-UHFFFAOYSA-N 2-morpholin-4-ylethyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCN1CCOCC1 MNZNJOQNLFEAKG-UHFFFAOYSA-N 0.000 description 1
- ALKCLFLTXBBMMP-UHFFFAOYSA-N 3,7-dimethylocta-1,6-dien-3-yl hexanoate Chemical compound CCCCCC(=O)OC(C)(C=C)CCC=C(C)C ALKCLFLTXBBMMP-UHFFFAOYSA-N 0.000 description 1
- VJOWMORERYNYON-UHFFFAOYSA-N 5-ethenyl-2-methylpyridine Chemical compound CC1=CC=C(C=C)C=N1 VJOWMORERYNYON-UHFFFAOYSA-N 0.000 description 1
- DJBVDAUKGXUPLO-QEMDMZNVSA-N C(C)C(C(=O)O)CCCC.C([C@H](O)[C@H](O)CO)O.C([C@H](O)[C@H](O)CO)O.C([C@H](O)[C@H](O)CO)O.C([C@H](O)[C@H](O)CO)O.C([C@H](O)[C@H](O)CO)O Chemical compound C(C)C(C(=O)O)CCCC.C([C@H](O)[C@H](O)CO)O.C([C@H](O)[C@H](O)CO)O.C([C@H](O)[C@H](O)CO)O.C([C@H](O)[C@H](O)CO)O.C([C@H](O)[C@H](O)CO)O DJBVDAUKGXUPLO-QEMDMZNVSA-N 0.000 description 1
- BWGNESOTFCXPMA-UHFFFAOYSA-N Dihydrogen disulfide Chemical compound SS BWGNESOTFCXPMA-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- URGQBRTWLCYCMR-UHFFFAOYSA-N [3-hydroxy-2,2-bis(hydroxymethyl)propyl] nonanoate Chemical compound CCCCCCCCC(=O)OCC(CO)(CO)CO URGQBRTWLCYCMR-UHFFFAOYSA-N 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 125000005119 alkyl cycloalkyl group Chemical group 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- ARCGXLSVLAOJQL-UHFFFAOYSA-N anhydrous trimellitic acid Natural products OC(=O)C1=CC=C(C(O)=O)C(C(O)=O)=C1 ARCGXLSVLAOJQL-UHFFFAOYSA-N 0.000 description 1
- 125000002490 anilino group Chemical group [H]N(*)C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 125000001204 arachidyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- SAOKZLXYCUGLFA-UHFFFAOYSA-N bis(2-ethylhexyl) adipate Chemical compound CCCCC(CC)COC(=O)CCCCC(=O)OCC(CC)CCCC SAOKZLXYCUGLFA-UHFFFAOYSA-N 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 125000004915 dibutylamino group Chemical group C(CCC)N(CCCC)* 0.000 description 1
- 150000005690 diesters Chemical class 0.000 description 1
- 125000001664 diethylamino group Chemical group [H]C([H])([H])C([H])([H])N(*)C([H])([H])C([H])([H])[H] 0.000 description 1
- KPGRTCPQLMJHFQ-UHFFFAOYSA-N diethylaminomethyl 2-methylprop-2-enoate Chemical compound CCN(CC)COC(=O)C(C)=C KPGRTCPQLMJHFQ-UHFFFAOYSA-N 0.000 description 1
- 125000002147 dimethylamino group Chemical group [H]C([H])([H])N(*)C([H])([H])[H] 0.000 description 1
- 125000004914 dipropylamino group Chemical group C(CC)N(CCC)* 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 150000002019 disulfides Chemical class 0.000 description 1
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 1
- LZJUZSYHFSVIGJ-UHFFFAOYSA-N ditridecyl hexanedioate Chemical compound CCCCCCCCCCCCCOC(=O)CCCCC(=O)OCCCCCCCCCCCCC LZJUZSYHFSVIGJ-UHFFFAOYSA-N 0.000 description 1
- FVBSDVQDRFRKRF-UHFFFAOYSA-N ditridecyl pentanedioate Chemical compound CCCCCCCCCCCCCOC(=O)CCCC(=O)OCCCCCCCCCCCCC FVBSDVQDRFRKRF-UHFFFAOYSA-N 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 125000004836 hexamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- 125000001183 hydrocarbyl group Chemical group 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 229910052945 inorganic sulfide Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000006317 isomerization reaction Methods 0.000 description 1
- 125000002463 lignoceryl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000006384 methylpyridyl group Chemical group 0.000 description 1
- 239000012184 mineral wax Substances 0.000 description 1
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 229910000476 molybdenum oxide Inorganic materials 0.000 description 1
- TVWWSIKTCILRBF-UHFFFAOYSA-N molybdenum trisulfide Chemical compound S=[Mo](=S)=S TVWWSIKTCILRBF-UHFFFAOYSA-N 0.000 description 1
- BRESEFMHKFGSDY-UHFFFAOYSA-N molybdenum;pyrrolidine-2,5-dione Chemical class [Mo].O=C1CCC(=O)N1 BRESEFMHKFGSDY-UHFFFAOYSA-N 0.000 description 1
- RZRFZEDWURIJRY-UHFFFAOYSA-N morpholin-4-ylmethyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCN1CCOCC1 RZRFZEDWURIJRY-UHFFFAOYSA-N 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 125000005609 naphthenate group Chemical group 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- BBZAGOMQOSEWBH-UHFFFAOYSA-N octyl dodecanoate Chemical compound CCCCCCCCCCCC(=O)OCCCCCCCC BBZAGOMQOSEWBH-UHFFFAOYSA-N 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 description 1
- 125000004817 pentamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- 239000010702 perfluoropolyether Substances 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- CYQAYERJWZKYML-UHFFFAOYSA-N phosphorus pentasulfide Chemical compound S1P(S2)(=S)SP3(=S)SP1(=S)SP2(=S)S3 CYQAYERJWZKYML-UHFFFAOYSA-N 0.000 description 1
- 125000003386 piperidinyl group Chemical group 0.000 description 1
- 229920013639 polyalphaolefin Polymers 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920013636 polyphenyl ether polymer Polymers 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 125000004076 pyridyl group Chemical group 0.000 description 1
- 125000000719 pyrrolidinyl group Chemical group 0.000 description 1
- 125000004929 pyrrolidonyl group Chemical group N1(C(CCC1)=O)* 0.000 description 1
- 125000004151 quinonyl group Chemical group 0.000 description 1
- 150000003873 salicylate salts Chemical class 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229960002317 succinimide Drugs 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 235000007586 terpenes Nutrition 0.000 description 1
- 150000003505 terpenes Chemical class 0.000 description 1
- JJJPTTANZGDADF-UHFFFAOYSA-N thiadiazole-4-thiol Chemical class SC1=CSN=N1 JJJPTTANZGDADF-UHFFFAOYSA-N 0.000 description 1
- 150000004867 thiadiazoles Chemical class 0.000 description 1
- YUKQRDCYNOVPGJ-UHFFFAOYSA-N thioacetamide Chemical compound CC(N)=S YUKQRDCYNOVPGJ-UHFFFAOYSA-N 0.000 description 1
- DLFVBJFMPXGRIB-UHFFFAOYSA-N thioacetamide Natural products CC(N)=O DLFVBJFMPXGRIB-UHFFFAOYSA-N 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 229940113165 trimethylolpropane Drugs 0.000 description 1
- 229930195735 unsaturated hydrocarbon Natural products 0.000 description 1
- 239000012991 xanthate Substances 0.000 description 1
- 125000005023 xylyl group Chemical group 0.000 description 1
Landscapes
- Lubricants (AREA)
Abstract
Description
本発明は潤滑油組成物に関し、特にシンクロナイザーリングとしてカーボン材を使用する手動変速機に好適な潤滑油組成物に関する。 The present invention relates to a lubricating oil composition, and more particularly to a lubricating oil composition suitable for a manual transmission using a carbon material as a synchronizer ring.
手動変速機用潤滑油組成物は、シンクロナイザーでの摩擦係数を高くしながら、高い耐摩耗性を有することが必要である（特許文献１、２）。また、さらなる省燃費性向上のためには、ギヤやベアリング摺動部での摩擦係数を低くする必要があるが、従来から使用されている摩擦調整剤を用いる手法では、シンクロナイザーリングの摩擦係数も同時に低くしてしまうことから、シンクロナイザーリングでの摩擦係数を高くすることとギヤやベアリング摺動部での摩擦係数を低くすることはトレードオフの関係にあった。 The lubricating oil composition for a manual transmission needs to have high wear resistance while increasing the friction coefficient in the synchronizer (Patent Documents 1 and 2). In order to further improve fuel efficiency, it is necessary to lower the friction coefficient at the gear and bearing sliding parts. However, with the conventional method using a friction modifier, the friction coefficient of the synchronizer ring Therefore, increasing the coefficient of friction in the synchronizer ring and decreasing the coefficient of friction in the gear and bearing sliding portion have a trade-off relationship.
本発明は、以上のような事情に鑑み、シンクロナイザーでの摩擦係数を高くしながら、ギヤやベアリング摺動部での摩擦係数を大幅に低減させることが可能な手動変速機用潤滑油組成物を提供することを目的とする。 In view of the circumstances as described above, the present invention provides a lubricating oil composition for a manual transmission capable of greatly reducing the friction coefficient at the gear and bearing sliding portion while increasing the friction coefficient at the synchronizer. The purpose is to provide.
本発明者らは前記課題について鋭意研究した結果、本発明を完成するに至った。 As a result of intensive studies on the above problems, the present inventors have completed the present invention.
すなわち、本発明は、（Ａ）鉱油および／または合成油からなる基油、（Ｂ）ジチオリン酸亜鉛、および（Ｃ）モリブデン化合物を含有し、前記（Ｃ）成分の組成物全量基準でのモリブデン元素量としての含有量（［Ｍｏ］）と前記（Ｂ）成分の組成物全量基準での亜鉛元素量としての含有量（［Ｚｎ］）との元素量の比（［Ｍｏ］／［Ｚｎ］）が０．２以上１．０以下であることを特徴とする手動変速機用潤滑油組成物である。 That is, the present invention comprises (A) a base oil composed of mineral oil and / or synthetic oil, (B) zinc dithiophosphate, and (C) a molybdenum compound, and molybdenum based on the total composition of the component (C). Ratio of the element amount ([Mo] / [Zn]) between the content ([Mo]) as the element amount and the content ([Zn]) as the zinc element amount based on the total composition amount of the component (B) ) Is a lubricating oil composition for manual transmission, wherein the lubricating oil composition is 0.2 or more and 1.0 or less.
また、本発明は、前記の手動変速機用潤滑油組成物において、（Ｃ）成分の含有量が、組成物全量基準、モリブデン元素量として、４００質量ｐｐｍ以上１２００質量ｐｐｍ以下であることを特徴とする手動変速機用潤滑油組成物である。 In the lubricating oil composition for manual transmission according to the present invention, the content of the component (C) is 400 mass ppm or more and 1200 mass ppm or less as the total amount of the composition based on the amount of molybdenum element. A lubricating oil composition for a manual transmission.
また、本発明は、前記の手動変速機用潤滑油組成物において、さらに（Ｄ）ポリ（メタ）アクリレート系化合物を含有することを特徴とする手動変速機用潤滑油組成物である。 The present invention also provides the lubricating oil composition for manual transmission, wherein the lubricating oil composition for manual transmission further comprises (D) a poly (meth) acrylate-based compound.
さらに、本発明は、前記の手動変速機用潤滑油組成物が、シンクロナイザーリングとしてカーボン材を使用する手動変速機に使用されることを特徴とする。 Furthermore, the present invention is characterized in that the lubricating oil composition for a manual transmission is used for a manual transmission that uses a carbon material as a synchronizer ring.
本発明の手動変速機用潤滑油組成物は、省燃費性向上のため低い金属間摩擦係数を有しながら、シンクロナイザーでの摩擦においては高い摩擦係数を有する手動変速機用として好適な潤滑油組成物である。 The lubricating oil composition for a manual transmission according to the present invention has a low coefficient of friction between metals to improve fuel efficiency, and is suitable for a manual transmission having a high coefficient of friction in friction with a synchronizer. It is a composition.
以下、本発明について詳述する。 Hereinafter, the present invention will be described in detail.
本発明の潤滑油組成物は、基油として鉱油および／または合成油を含有する。 The lubricating oil composition of the present invention contains mineral oil and / or synthetic oil as a base oil.
鉱油としては、原油を常圧蒸留および減圧蒸留して得られた潤滑油留分に対して、溶剤脱れき、溶剤抽出、水素化分解、溶剤脱ろう、接触脱ろう、水素化精製、硫酸洗浄、白土処理などの１種もしくは２種以上の精製手段を適宜組み合わせて適用して得られるパラフィン系またはナフテン系などの鉱油系潤滑油基油やノルマルパラフィン、イソパラフィン等が挙げられる。 As mineral oil, lubricating oil fraction obtained by atmospheric distillation and vacuum distillation of crude oil is subjected to solvent removal, solvent extraction, hydrocracking, solvent dewaxing, catalytic dewaxing, hydrorefining, sulfuric acid washing , Mineral oil base oils such as paraffinic or naphthenic base oils, normal paraffins, isoparaffins, and the like obtained by appropriately combining one or two or more purification means such as clay treatment.
好ましい鉱油系潤滑油基油としては以下の基油を挙げることができる。
〔１〕パラフィン基系原油および／または混合基系原油の常圧蒸留による留出油；
〔２〕パラフィン基系原油および／または混合基系原油の常圧蒸留残渣油の減圧蒸留留出油（ＷＶＧＯ）；
〔３〕潤滑油脱ろう工程により得られるワックスおよび／またはＧＴＬプロセス等により製造されるフィッシャートロプシュワックス；
〔４〕〔１〕〜〔３〕の中から選ばれる１種または２種以上の混合油のマイルドハイドロクラッキング処理油（ＭＨＣ）；
〔５〕〔１〕〜〔４〕の中から選ばれる２種以上の油の混合油；
〔６〕〔１〕、〔２〕、〔３〕、〔４〕または〔５〕の脱れき油（ＤＡＯ）；
〔７〕〔６〕のマイルドハイドロクラッキング処理油（ＭＨＣ）；
〔８〕〔１〕〜〔７〕の中から選ばれる２種以上の油の混合油などを原料油とし、この原料油および／またはこの原料油から回収された潤滑油留分を、通常の精製方法によって精製し、潤滑油留分を回収することによって得られる潤滑油
Preferred mineral oil base oils include the following base oils.
[1] Distilled oil obtained by atmospheric distillation of paraffin-based crude oil and / or mixed-base crude oil;
[2] Vacuum distillation distillate (WVGO) of paraffin base crude oil and / or mixed base crude oil at atmospheric distillation residue;
[3] A wax obtained by a lubricant dewaxing step and / or a Fischer-Tropsch wax produced by a GTL process or the like;
[4] Mild hydrocracking treatment oil (MHC) of one or two or more mixed oils selected from [1] to [3];
[5] A mixed oil of two or more oils selected from [1] to [4];
[6] Degassed oil (DAO) of [1], [2], [3], [4] or [5];
[7] Mild hydrocracking treatment oil (MHC) of [6];
[8] A mixed oil of two or more kinds of oils selected from [1] to [7] is used as a raw material oil, and the raw oil and / or a lubricating oil fraction recovered from the raw material oil Lubricating oil obtained by refining by the refining method and collecting the lubricating oil fraction
ここでいう通常の精製方法とは特に制限されるものではなく、潤滑油基油製造の際に用いられる精製方法を任意に採用することができる。通常の精製方法としては、例えば、（ア）水素化分解、水素化仕上げなどの水素化精製、（イ）フルフラール溶剤抽出などの溶剤精製、（ウ）溶剤脱ろうや接触脱ろうなどの脱ろう、（エ）酸性白土や活性白土などによる白土精製、（オ）硫酸洗浄、苛性ソーダ洗浄などの薬品（酸またはアルカリ）精製などが挙げられる。本発明ではこれらの１つまたは２つ以上を任意の組み合わせおよび任意の順序で採用することができる。 The normal refining method here is not particularly limited, and a refining method used in the production of the lubricating base oil can be arbitrarily employed. Examples of conventional purification methods include (a) hydrorefining such as hydrocracking and hydrofinishing, (b) solvent purification such as furfural solvent extraction, and (c) dewaxing such as solvent dewaxing and catalytic dewaxing. And (d) white clay refining with acid clay and activated clay, and (e) chemical (acid or alkali) purification such as sulfuric acid washing and caustic soda washing. In the present invention, one or more of these can be used in any combination and in any order.
また、本発明で用いる鉱油系潤滑油基油としては、上記〔１〕〜〔８〕から選ばれる基油をそのまま、またはこの基油から回収された潤滑油留分を、水素化分解あるいはワックス異性化し、当該生成物をそのまま、もしくはこれから潤滑油留分を回収し、次に溶剤脱ろうや接触脱ろうなどの脱ろう処理を行い、その後、溶剤精製処理するか、または、溶剤精製処理した後、溶剤脱ろうや接触脱ろうなどの脱ろう処理を行って製造される水素化分解鉱油及び／又はワックス異性化イソパラフィン系基油も好ましく用いられる。 Further, as the mineral-based lubricating base oil used in the present invention, the base oil selected from the above [1] to [8] is used as it is or the lubricating oil fraction recovered from this base oil is hydrocracked or waxed. Isomerized and the product is used as it is or a lubricating oil fraction is recovered therefrom, followed by dewaxing treatment such as solvent dewaxing or catalytic dewaxing, followed by solvent refining treatment or solvent refining treatment. Thereafter, hydrocracked mineral oil and / or wax isomerized isoparaffin base oil produced by performing dewaxing treatment such as solvent dewaxing or catalytic dewaxing is also preferably used.
合成油としては、例えば、ポリα−オレフィン（エチレン−プロピレン共重合体、ポリブテン、１−オクテンオリゴマー、１−デセンオリゴマー、およびこれらの水素化物等）、アルキルベンゼン、アルキルナフタレン、モノエステル（ブチルステアレート、オクチルラウレート）、ジエステル（ジトリデシルグルタレート、ジ−２−エチルヘキシルアジペート、ジイソデシルアジペート、ジトリデシルアジペート、ジ−２−エチルヘキシルセパケート等）、ポリエステル（トリメリット酸エステル等）、ポリオールエステル（トリメチロールプロパンカプリレート、トリメチロールプロパンペラルゴネート、ペンタエリスリトール−２−エチルヘキサノエート、ペンタエリスリトールペラルゴネート等）、ポリオキシアルキレングリコール、ポリフェニルエーテル、ジアルキルジフェニルエーテル、リン酸エステル（トリクレジルホスフェート等）、含フッ素化合物（パーフルオロポリエーテル、フッ素化ポリオレフィン等）、シリコーン油、ＦＴ反応などの合成ワックスおよび／または石油精製工程から得られるワックス（好ましくは溶剤脱ロウ工程で得られるスラックワックス）を異性化、水素化して得られる高性能炭化水素基油、テルペン類のような天然由来の不飽和炭化水素を水添して得られる炭化水素基油等が例示できる。 Synthetic oils include, for example, poly α-olefins (ethylene-propylene copolymer, polybutene, 1-octene oligomer, 1-decene oligomer, and hydrides thereof), alkylbenzene, alkylnaphthalene, monoester (butyl stearate). Octyl laurate), diester (ditridecyl glutarate, di-2-ethylhexyl adipate, diisodecyl adipate, ditridecyl adipate, di-2-ethylhexyl sepacate, etc.), polyester (trimellitic acid ester, etc.), polyol ester (tri Methylolpropane caprylate, trimethylolpropane pelargonate, pentaerythritol-2-ethylhexanoate, pentaerythritol pelargonate), polyoxyalkylene glycol Obtained from synthetic waxes such as polyphenyl ether, dialkyl diphenyl ether, phosphate esters (tricresyl phosphate, etc.), fluorine-containing compounds (perfluoropolyether, fluorinated polyolefins, etc.), silicone oil, FT reaction and / or petroleum refining process High-performance hydrocarbon base oil obtained by isomerization and hydrogenation of the resulting wax (preferably slack wax obtained in the solvent dewaxing step), and obtained by hydrogenating naturally-occurring unsaturated hydrocarbons such as terpenes Examples include hydrocarbon base oils.
（Ａ）成分の基油は、２種類以上の鉱油系基油同志、又は２種類以上の合成油系基油同志の混合物であっても差し支えなく、鉱油系基油と合成油系基油との混合物であっても差し支えない。そして、上記混合物における２種類以上の基油の混合比は、任意に選ぶことができる。 The base oil of component (A) may be a mixture of two or more mineral base oils, or a mixture of two or more synthetic base oils. Even a mixture of these can be used. And the mixing ratio of 2 or more types of base oil in the said mixture can be chosen arbitrarily.
本発明に係る基油の１００℃における動粘度は、１．５ｍｍ２／ｓ以上であることが好ましく、２．０ｍｍ２／ｓ以上がより好ましく、２．５ｍｍ２／ｓ以上がさらに好ましい。基油の１００℃動粘度を１．５ｍｍ２／ｓ以上にすることで、十分な潤滑性を確保でき、また潤滑油基油の蒸発損失を抑制することができる。
一方、１００℃における動粘度は、１０ｍｍ２／ｓ以下であることが好ましく、８ｍｍ２／ｓ以下がより好ましく、５ｍｍ２／ｓ以下がさらに好ましい。基油の１００℃動粘度を１０ｍｍ２／ｓ以下にすることで、低温粘度特性に優れた潤滑油組成物を得られる。
Kinematic viscosity at 100 ° C. of the base oil according to the present invention is preferably 1.5 mm 2 / s or higher, more preferably at least 2.0 mm 2 / s, still more preferably at least 2.5 mm 2 / s. By setting the 100 ° C. kinematic viscosity of the base oil to 1.5 mm 2 / s or more, sufficient lubricity can be secured, and evaporation loss of the lubricant base oil can be suppressed.
Meanwhile, the kinematic viscosity at 100 ° C., preferably not more than 10 mm 2 / s, more preferably not more than 8 mm 2 / s, more preferably not more than 5 mm 2 / s. By setting the 100 ° C. kinematic viscosity of the base oil to 10 mm 2 / s or less, a lubricating oil composition having excellent low-temperature viscosity characteristics can be obtained.
本発明に係る基油の粘度指数は、８０以上であることが好ましく、９０以上がより好ましく、９５以上がさらに好ましい。粘度指数を８０以上とすることによって、低温から高温にわたり良好な粘度特性を示す組成物を得ることができる。
一方、上限については特に制限はないが、通常２００以下であり、１６０以下が好ましい。粘度指数が高すぎると低温時の粘度が高くなる傾向があり好ましくない。
The viscosity index of the base oil according to the present invention is preferably 80 or more, more preferably 90 or more, and still more preferably 95 or more. By setting the viscosity index to 80 or more, it is possible to obtain a composition exhibiting good viscosity characteristics from a low temperature to a high temperature.
On the other hand, the upper limit is not particularly limited, but is usually 200 or less, and preferably 160 or less. If the viscosity index is too high, the viscosity at low temperatures tends to increase, which is not preferable.
本発明の潤滑油組成物は、（Ｂ）成分としてジチオリン酸亜鉛を含有する。 The lubricating oil composition of the present invention contains zinc dithiophosphate as the component (B).
ジチオリン酸亜鉛（ＺｎＤＴＰ）としては下記一般式（１）で表す化合物が挙げられる。
式（１）中、Ｒ１〜Ｒ４はそれぞれ個別に、炭素数１以上、好ましくは１〜３０の炭化水素基を表す。 In formula (1), R 1 to R 4 each independently represents a hydrocarbon group having 1 or more carbon atoms, preferably 1 to 30 carbon atoms.
炭素数１以上の炭化水素基としては、例えば、アルキル基、シクロアルキル基、アルキルシクロアルキル基、アルケニル基、アリール基、アルキルアリール基、及びアリールアルキル基を挙げることができる。これらの中でも、炭素数１〜１８のアルキル基、アリール基または炭素数７〜１８のアルキルアリール基が好ましい。 Examples of the hydrocarbon group having 1 or more carbon atoms include an alkyl group, a cycloalkyl group, an alkylcycloalkyl group, an alkenyl group, an aryl group, an alkylaryl group, and an arylalkyl group. Among these, a C1-C18 alkyl group, an aryl group, or a C7-C18 alkylaryl group is preferable.
アルキル基としては、具体的にはメチル基、エチル基、プロピル基、ブチル基、ペンチル基、ヘキシル基、ヘプチル基、オクチル基、ノニル基、デシル基、ウンデシル基、ドデシル基、トリデシル基、テトラデシル基、ペンタデシル基、ヘキサデシル基、ヘプタデシル基、オクタデシル基等が挙げられ、特に炭素数３〜８のアルキル基が一般的に用いられる。これらアルキル基は直鎖状も分枝状も含まれる。これらはまた第１級（プライマリー）アルキル基も第２級（セカンダリー）アルキル基も含まれる。 Specific examples of the alkyl group include methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, heptyl group, octyl group, nonyl group, decyl group, undecyl group, dodecyl group, tridecyl group, tetradecyl group. , A pentadecyl group, a hexadecyl group, a heptadecyl group, an octadecyl group, and the like, and an alkyl group having 3 to 8 carbon atoms is generally used. These alkyl groups include straight-chain and branched groups. They also include primary (primary) alkyl groups and secondary (secondary) alkyl groups.
アリール基としては、具体的には、フェニル基、ナフチル基等が挙げられる。アルキルアリール基としては、具体的には、トリル基、キシリル基、エチルフェニル基、プロピルフェニル基、ブチルフェニル基、ペンチルフェニル基、ヘキシルフェニル基、ヘプチルフェニル基、オクチルフェニル基、ノニルフェニル基、デシルフェニル基、ウンデシルフェニル基、ドデシルフェニル基等（これらのアルキル基は直鎖状も分枝状も含まれ、また全ての置換異性体も含まれる）が挙げられる。 Specific examples of the aryl group include a phenyl group and a naphthyl group. Specific examples of the alkylaryl group include tolyl, xylyl, ethylphenyl, propylphenyl, butylphenyl, pentylphenyl, hexylphenyl, heptylphenyl, octylphenyl, nonylphenyl, decyl. A phenyl group, an undecylphenyl group, a dodecylphenyl group, and the like (these alkyl groups include both straight-chain and branched groups and all substituted isomers).
本発明に用いられる潤滑油組成物において、（Ｂ）ジチオリン酸亜鉛の含有量は、組成物全量基準、亜鉛元素換算量として、４００質量ｐｐｍ以上であることが好ましく、より好ましくは５００質量ｐｐｍ以上、さらに好ましくは１０００質量ｐｐｍ以上である。また、６０００質量ｐｐｍ以下であることが好ましく、より好ましくは５５００質量ｐｐｍ以下、さらに好ましくは５０００質量ｐｐｍ以下、特に好ましくは４５００質量ｐｐｍ以下である。その含有量が４００質量ｐｐｍ未満の場合、省燃費効果が期待できず、一方、含有量が６０００質量ｐｐｍを超える場合、潤滑油組成物の、特に高温下での安定性が低下する傾向にあるため好ましくない。 In the lubricating oil composition used in the present invention, the content of (B) zinc dithiophosphate is preferably 400 ppm by mass or more, more preferably 500 ppm by mass or more, based on the total amount of the composition and the amount converted to zinc element. More preferably, it is 1000 ppm by mass or more. Moreover, it is preferable that it is 6000 mass ppm or less, More preferably, it is 5500 mass ppm or less, More preferably, it is 5000 mass ppm or less, Most preferably, it is 4500 mass ppm or less. If the content is less than 400 ppm by mass, a fuel saving effect cannot be expected. On the other hand, if the content exceeds 6000 ppm by mass, the stability of the lubricating oil composition, particularly at high temperatures, tends to decrease. Therefore, it is not preferable.
本発明の潤滑油組成物は（Ｃ）成分としてモリブデン化合物を含有する。 The lubricating oil composition of the present invention contains a molybdenum compound as component (C).
本発明で用いる有機モリブデン化合物としては、（Ｃ１）硫黄を含有する有機モリブデン化合物、または（Ｃ２）構成元素として硫黄を含まない有機モリブデン化合物等の各種有機モリブデン化合物が挙げられる。 Examples of the organic molybdenum compound used in the present invention include various organic molybdenum compounds such as (C1) an organic molybdenum compound containing sulfur or (C2) an organic molybdenum compound containing no sulfur as a constituent element.
まず、（Ｃ１）硫黄を含有する有機モリブデン化合物としては、モリブデンジチオホスフェート（ＭｏＤＴＰ）、モリブデンジチオカーバメート（ＭｏＤＴＣ）等が挙げられる。 First, (C1) organic molybdenum compounds containing sulfur include molybdenum dithiophosphate (MoDTP), molybdenum dithiocarbamate (MoDTC), and the like.
モリブデンジチオホスフェートとしては、例えば、下記一般式（２）で表される化合物が挙げられる。 As molybdenum dithiophosphate, the compound represented by following General formula (2) is mentioned, for example.
上記一般式（２）中、Ｒ５〜Ｒ８は、それぞれ個別に炭素数２〜３０、好ましくは炭素数５〜１８、より好ましくは炭素数５〜１２のアルキル基、又は炭素数６〜１８、好ましくは炭素数１０〜１５の（アルキル）アリール基等の炭化水素基を示す。またＹ１〜Ｙ４は、それぞれ個別に、硫黄原子または酸素原子を示す。 In General Formula (2), R 5 to R 8 are each independently an alkyl group having 2 to 30 carbon atoms, preferably 5 to 18 carbon atoms, more preferably 5 to 12 carbon atoms, or 6 to 18 carbon atoms. , Preferably a hydrocarbon group such as an (alkyl) aryl group having 10 to 15 carbon atoms. Y 1 to Y 4 each independently represent a sulfur atom or an oxygen atom.
モリブデンジチオカーバメートとしては、例えば、下記一般式（３）で表される化合物を挙げることができる。 As a molybdenum dithiocarbamate, the compound represented by following General formula (3) can be mentioned, for example.
上記一般式（３）中、Ｒ９〜Ｒ１２は、それぞれ個別に炭素数２〜２４、好ましくは炭素数４〜１３のアルキル基、又は炭素数６〜２４、好ましくは炭素数１０〜１５の（アルキル）アリール基等の炭化水素基を示す。またＹ５、Ｙ６、Ｙ７及びＹ８は、それぞれ個別に、硫黄原子または酸素原子を示す。 In the general formula (3), R 9 to R 12 are each independently an alkyl group having 2 to 24 carbon atoms, preferably 4 to 13 carbon atoms, or 6 to 24 carbon atoms, preferably 10 to 15 carbon atoms. A hydrocarbon group such as an (alkyl) aryl group is shown. Y 5 , Y 6 , Y 7 and Y 8 each independently represent a sulfur atom or an oxygen atom.
また、これら以外の硫黄を含有する有機モリブデン化合物としては、モリブデン化合物（例えば、二酸化モリブデン、三酸化モリブデン等の酸化モリブデン、オルトモリブデン酸、パラモリブデン酸、（ポリ）硫化モリブデン酸等のモリブデン酸、これらモリブデン酸の金属塩、アンモニウム塩等のモリブデン酸塩、二硫化モリブデン、三硫化モリブデン、五硫化モリブデン、ポリ硫化モリブデン等の硫化モリブデン、硫化モリブデン酸、硫化モリブデン酸の金属塩又はアミン塩、塩化モリブデン等のハロゲン化モリブデン等）と、硫黄含有有機化合物（例えば、アルキル（チオ）キサンテート、チアジアゾール、メルカプトチアジアゾール、チオカーボネート、テトラハイドロカルビルチウラムジスルフィド、ビス（ジ（チオ）ハイドロカルビルジチオホスホネート）ジスルフィド、有機（ポリ）サルファイド、硫化エステル等）あるいはその他の有機化合物との錯体等、あるいは、上記硫化モリブデン、硫化モリブデン酸等の硫黄含有モリブデン化合物と、後述する、構成元素として硫黄を含まない有機モリブデン化合物の項で説明するアミン化合物、コハク酸イミド、有機酸、アルコール等との錯体等、あるいは、元素イオウ、硫化水素、五硫化リン、酸化硫黄、無機硫化物、ヒドロカルビル（ポリ）スルフィド、硫化オレフィン、硫化エステル、硫化ワックス、硫化カルボン酸、硫化アルキルフェノール、チオアセトアミド、チオ尿素等の硫黄源と、後述する構成元素として硫黄を含まない有機モリブデン化合物の項で説明する、構成元素として硫黄を含まないモリブデン化合物と、後述する構成元素として硫黄を含まない有機モリブデン化合物の項で説明する、アミン化合物、コハク酸イミド、有機酸、アルコール等の硫黄を含まない有機化合物とを反応させた硫黄含有有機モリブデン化合物等様々なものを挙げることができる。具体的には、特開昭５６−１０５９１号公報や米国特許第４２６３１５２号等に記載されているような有機モリブデン化合物を例示することができる。 In addition, organic molybdenum compounds containing sulfur other than these include molybdenum compounds (for example, molybdenum oxide such as molybdenum dioxide and molybdenum trioxide, orthomolybdic acid, paramolybdic acid, molybdic acid such as (poly) sulfurized molybdic acid, These metal salts of molybdate, molybdenum salts such as ammonium salts, molybdenum sulfides such as molybdenum disulfide, molybdenum trisulfide, molybdenum pentasulfide, and polysulfide molybdenum, molybdenum sulfides, metal salts or amine salts of molybdenum sulfides, chlorides Molybdenum halides such as molybdenum) and sulfur-containing organic compounds (eg, alkyl (thio) xanthates, thiadiazoles, mercaptothiadiazoles, thiocarbonates, tetrahydrocarbylthiuram disulfides, bis (di (thio) hydrocarbons). Bildithiophosphonate) disulfide, organic (poly) sulfide, sulfurized ester, etc.) or complexes with other organic compounds, or sulfur-containing molybdenum compounds such as molybdenum sulfide and sulfurized molybdic acid, and sulfur as a constituent element to be described later Amine compounds, succinimides, organic acids, complexes with alcohols, etc., or elemental sulfur, hydrogen sulfide, phosphorus pentasulfide, sulfur oxide, inorganic sulfide, hydrocarbyl (poly ) Constituent elements described in the section of sulfur sources such as sulfide, sulfurized olefin, sulfurized ester, sulfurized wax, sulfurized carboxylic acid, sulfurized alkylphenol, thioacetamide, thiourea, and organic molybdenum compounds that do not contain sulfur As sulfur-free molybdenum A sulfur-containing organic molybdenum obtained by reacting a compound with an organic compound not containing sulfur, such as an amine compound, a succinimide, an organic acid, or an alcohol, described in the section of an organic molybdenum compound containing no sulfur as a constituent element described later Various compounds such as compounds can be mentioned. Specifically, organic molybdenum compounds such as those described in JP-A-56-10591 and US Pat. No. 4,263,152 can be exemplified.
（Ｃ２）構成元素として硫黄を含まない有機モリブデン化合物としては、具体的には、モリブデン−アミン錯体、モリブデン−コハク酸イミド錯体、有機酸のモリブデン塩、アルコールのモリブデン塩などが挙げられ、中でも、モリブデン−アミン錯体、有機酸のモリブデン塩及びアルコールのモリブデン塩が好ましい。 (C2) Specific examples of organic molybdenum compounds not containing sulfur as a constituent element include molybdenum-amine complexes, molybdenum-succinimide complexes, organic acid molybdenum salts, alcohol molybdenum salts, and the like. Preference is given to molybdenum-amine complexes, molybdenum salts of organic acids and molybdenum salts of alcohols.
本発明に係る有機モリブデン化合物としては、摩擦低減効果に優れる点で、硫黄含有有機モリブデン化合物が好ましく、モリブデンジチオカーバメートを使用することが最も好ましい。 As the organomolybdenum compound according to the present invention, a sulfur-containing organomolybdenum compound is preferable, and molybdenum dithiocarbamate is most preferably used from the viewpoint of excellent friction reduction effect.
本発明に用いられる潤滑油組成物において、（Ｃ）有機モリブデン化合物の含有量は、組成物全量基準で、モリブデン元素換算量として４００質量ｐｐｍ以上であることが好ましく、より好ましくは５００質量ｐｐｍ以上、さらに好ましくは６００質量ｐｐｍ以上である。また、１２００質量ｐｐｍ以下であることが好ましく、より好ましくは１１００質量ｐｐｍ以下、さらに好ましくは１０００質量ｐｐｍ以下、特に好ましくは９００質量ｐｐｍ以下である。その含有量が４００質量ｐｐｍ未満の場合、省燃費効果が期待できず、一方、含有量が１２００質量ｐｐｍを超える場合、潤滑油組成物の、特に高温下での安定性が低下する傾向にあるため好ましくない。 In the lubricating oil composition used in the present invention, the content of the (C) organomolybdenum compound is preferably 400 ppm by mass or more, more preferably 500 ppm by mass or more, in terms of molybdenum element, based on the total amount of the composition. More preferably, it is 600 mass ppm or more. Moreover, it is preferable that it is 1200 mass ppm or less, More preferably, it is 1100 mass ppm or less, More preferably, it is 1000 mass ppm or less, Most preferably, it is 900 mass ppm or less. If the content is less than 400 ppm by mass, a fuel saving effect cannot be expected. On the other hand, if the content exceeds 1200 ppm by mass, the stability of the lubricating oil composition, particularly at high temperatures, tends to decrease. Therefore, it is not preferable.
本発明の潤滑油組成物中において、（Ｂ）ジチオリン酸亜鉛の潤滑油組成物全量基準での亜鉛元素換算含有量（［Ｚｎ］）と（Ｃ）モリブデン化合物の潤滑油組成物全量基準でのモリブデン元素換算含有量（［Ｍｏ］）の比率（［Ｍｏ］／［Ｚｎ］）は、０．２以上であることが好ましく、０．２２以上がより好ましく、０．２５がさらに好ましい。一方、１．０以下であることが好ましく、０．９以下がより好ましく、０．８以下がさらに好ましい。［Ｍｏ］／［Ｚｎ］を上記範囲内に制御することで摩耗防止性を向上し、疲労寿命を長くすることができる。 In the lubricating oil composition of the present invention, (B) zinc dithiophosphate lubricating oil composition based on the total amount of zinc element equivalent ([Zn]) and (C) molybdenum compound based on the lubricating oil composition based on the total amount The ratio ([Mo] / [Zn]) of the molybdenum element equivalent content ([Mo]) is preferably 0.2 or more, more preferably 0.22 or more, and further preferably 0.25. On the other hand, it is preferably 1.0 or less, more preferably 0.9 or less, and even more preferably 0.8 or less. By controlling [Mo] / [Zn] within the above range, wear resistance can be improved and the fatigue life can be extended.
本発明の潤滑油組成物は（Ｄ）成分としてポリ（メタ）アクリレート系化合物を含有することが好ましい。
ここでいう（メタ）アクリレートとは、アクリレート及びメタクリレートの総称であり、ポリ（メタ）アクリレート系化合物は、好ましくは下記一般式（４）で表される（メタ）アクリレートモノマー（以下、「モノマーＭ−１」という。）を含む重合性モノマーの重合体である。
The (meth) acrylate here is a general term for acrylate and methacrylate, and the poly (meth) acrylate compound is preferably a (meth) acrylate monomer represented by the following general formula (4) (hereinafter referred to as “monomer M”). -1 "))).
一般式（４）で表されるモノマーの１種の単独重合体または２種以上の共重合により得られるポリ（メタ）アクリレート系化合物はいわゆる非分散型ポリ（メタ）アクリレートであるが、本発明に係るポリ（メタ）アクリレート系化合物は、一般式（４）で表されるモノマーＭ−１と、下記一般式（５）および（６）から選ばれる１種以上のモノマー（以下、それぞれ「モノマーＭ−２」および「モノマーＭ−３」という。）を共重合させたいわゆる分散型ポリ（メタ）アクリレートであってもよい。
一般式（４）中のＲ２で表される炭化水素基としては、具体的には、メチル基、エチル基、プロピル基、ブチル基、ペンチル基、ヘキシル基、ヘプチル基、オクチル基、ノニル基、デシル基、デシル基、ウンデシル基、ドデシル基、トリデシル基、テトラデシル基、ペンタデシル基、ヘキサデシル基、ヘプタデシル基、オクタデシル基、エイコシル基、及びテトラコシル基（これらアルキル基は直鎖状でも分枝状でもよい。）、さらにはブチレンやブタジエン、イソプレン等の重合物の水素化物等のアルキル基が例示できる。 Specific examples of the hydrocarbon group represented by R 2 in the general formula (4) include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, an octyl group, and a nonyl group. Decyl group, decyl group, undecyl group, dodecyl group, tridecyl group, tetradecyl group, pentadecyl group, hexadecyl group, heptadecyl group, octadecyl group, eicosyl group, and tetracosyl group (these alkyl groups may be linear or branched) And an alkyl group such as a hydride of a polymer such as butylene, butadiene, or isoprene.
一般式（５）中のＲ４で表されるアルキレン基としては、具体的には、エチレン基、プロピレン基、ブチレン基、ペンチレン基、ヘキシレン基、へプチレン基、オクチレン基、ノニレン基、デシレン基、ウンデシレン基、ドデシレン基、トリデシレン基、テトラデシレン基、ペンタデシレン基、ヘキサデシレン基、ヘプタデシレン基、及びオクタデシレン基（これらアルキレン基は直鎖状でも分枝状でもよい。）等が例示できる。 Specific examples of the alkylene group represented by R 4 in the general formula (5) include an ethylene group, a propylene group, a butylene group, a pentylene group, a hexylene group, a heptylene group, an octylene group, a nonylene group, and a decylene group. And an undecylene group, dodecylene group, tridecylene group, tetradecylene group, pentadecylene group, hexadecylene group, heptadecylene group, and octadecylene group (these alkylene groups may be linear or branched).
一般式（５）および（６）中のＥ１、Ｅ２で表される基としては、具体的には、ジメチルアミノ基、ジエチルアミノ基、ジプロピルアミノ基、ジブチルアミノ基、アニリノ基、トルイジノ基、キシリジノ基、アセチルアミノ基、ベンゾイルアミノ基、モルホリノ基、ピロリル基、ピロリノ基、ピリジル基、メチルピリジル基、ピロリジニル基、ピペリジニル基、キノニル基、ピロリドニル基、ピロリドノ基、イミダゾリノ基およびピラジノ基等が例示できる。 Specific examples of the groups represented by E 1 and E 2 in the general formulas (5) and (6) include a dimethylamino group, a diethylamino group, a dipropylamino group, a dibutylamino group, an anilino group, and a toluidino group. Xylidino, acetylamino, benzoylamino, morpholino, pyrrolyl, pyrrolino, pyridyl, methylpyridyl, pyrrolidinyl, piperidinyl, quinonyl, pyrrolidonyl, pyrrolidono, imidazolino and pyrazino It can be illustrated.
モノマーＭ−２、モノマーＭ−３の好ましい例としては、具体的には、ジメチルアミノメチルメタクリレート、ジエチルアミノメチルメタクリレート、ジメチルアミノエチルメタクリレート、ジエチルアミノエチルメタクリレート、２−メチル−５−ビニルピリジン、モルホリノメチルメタクリレート、モルホリノエチルメタクリレート、Ｎ−ビニルピロリドン及びこれらの混合物等が例示できる。 As preferable examples of the monomer M-2 and the monomer M-3, specifically, dimethylaminomethyl methacrylate, diethylaminomethyl methacrylate, dimethylaminoethyl methacrylate, diethylaminoethyl methacrylate, 2-methyl-5-vinylpyridine, morpholinomethyl methacrylate , Morpholinoethyl methacrylate, N-vinylpyrrolidone, and mixtures thereof.
モノマーＭ−１とモノマーＭ−２〜Ｍ−３との共重合体の共重合モル比については特に制限はないが、Ｍ−１：Ｍ−２〜Ｍ−３＝９９：１〜８０：２０程度が好ましく、より好ましくは９８：２〜８５：１５、さらに好ましくは９５：５〜９０：１０である。 There is no particular limitation on the copolymerization molar ratio of the copolymer of the monomer M-1 and the monomers M-2 to M-3, but M-1: M-2 to M-3 = 99: 1 to 80:20. A degree is preferable, More preferably, it is 98: 2-85: 15, More preferably, it is 95: 5-90: 10.
ポリ（メタ）アクリレート系化合物の重量平均分子量（ＭＷ）は、２，０００以上であることが好ましく、より好ましくは５，０００以上であり、さらに好ましくは１０，０００以上である。また、５００，０００以下であることが好ましく、より好ましくは３００，０００以下であり、さらに好ましくは１００，０００以下であり、最も好ましくは５０，０００以下である。重量平均分子量が２，０００未満の場合には潤滑油基油に溶解させた場合の粘度指数向上効果が小さく省燃費性や低温粘度特性に劣るだけでなく、コストが上昇するおそれがあり、重量平均分子量が５００，０００を超える場合にはせん断安定性や潤滑油基油への溶解性、貯蔵安定性が悪くなるおそれがある。 The weight average molecular weight (M W ) of the poly (meth) acrylate compound is preferably 2,000 or more, more preferably 5,000 or more, and further preferably 10,000 or more. Moreover, it is preferable that it is 500,000 or less, More preferably, it is 300,000 or less, More preferably, it is 100,000 or less, Most preferably, it is 50,000 or less. When the weight average molecular weight is less than 2,000, the viscosity index improvement effect when dissolved in a lubricating base oil is small, and not only fuel consumption and low temperature viscosity characteristics are inferior, but also the cost may increase. When the average molecular weight exceeds 500,000, shear stability, solubility in lubricating base oil, and storage stability may be deteriorated.
（Ｄ）ポリ（メタ）クリレート系化合物の含有量は、組成物全量基準で２０質量％以下であることが好ましく、より好ましくは１８質量％以下、更に好ましくは１６質量％以下である。含有量が２０質量％を超えるとせん断安定性が低下する傾向にある。
一方、含有量は、組成物全量基準で、好ましくは０．５質量％以上であり、より好ましくは１質量％以上、更に好ましくは５質量％以上である。含有量が０．５質量％に満たない場合は疲労寿命が低下する傾向にある。
The content of the (D) poly (meth) acrylate compound is preferably 20% by mass or less, more preferably 18% by mass or less, and still more preferably 16% by mass or less based on the total amount of the composition. When the content exceeds 20% by mass, the shear stability tends to decrease.
On the other hand, the content is preferably 0.5% by mass or more, more preferably 1% by mass or more, and further preferably 5% by mass or more, based on the total amount of the composition. When the content is less than 0.5% by mass, the fatigue life tends to decrease.
本発明の潤滑油組成物は、さらに（Ｅ）成分として、金属系清浄剤を含有することが好ましい。
金属系清浄剤としては、潤滑油用の金属系清浄剤として通常用いられる任意の化合物が使用可能である。例えば、アルカリ金属又はアルカリ土類金属のスルフォネート、フェネート、サリシレート、ナフテネート等の正塩、塩基性塩または過塩基性塩等が挙げられる。アルカリ金属としてはナトリウムやカリウム、アルカリ土類金属としてはカルシウム、マグネシウム等が例示される。
なお、これら金属系清浄剤の全塩基価は０〜５００ｍｇＫＯＨ／ｇであることが好ましく、より好ましくは５０ｍｇＫＯＨ／ｇ以上、さらに好ましくは２５０ｍｇＫＯＨ／ｇ以上、またより好ましくは４５０ｍｇＫＯＨ／ｇ以下である。
金属系清浄剤を含有することにより、シンクロナイザーの摩擦特性が良くなる。具体的には静摩擦係数が低下することにより変速操作時の引っ掛かりの程度が減少し、また動摩擦係数が上がることにより、変速操作にかかる時間を低減することができる。ただし、塩基価が５００ｍｇＫＯＨ／ｇを超えると、その効果が不安定になる。この摩擦特性に関しては、金属としてはカルシウムが好ましく、スルフォネートがより好ましい。
本発明の潤滑油組成物に金属系清浄剤を配合する場合、その配合量は、通常、潤滑油組成物全量基準、アルカリ金属あるいはアルカリ土類金属元素換算で、０．００１〜０．５質量％であることが好ましい。
The lubricating oil composition of the present invention preferably further contains a metal detergent as the component (E).
As the metallic detergent, any compound usually used as a metallic detergent for lubricating oil can be used. For example, alkali salts or alkaline earth metal sulfonates, phenates, salicylates, naphthenates and other normal salts, basic salts, overbased salts, and the like can be given. Examples of the alkali metal include sodium and potassium, and examples of the alkaline earth metal include calcium and magnesium.
In addition, it is preferable that the total base number of these metal type detergents is 0-500 mgKOH / g, More preferably, it is 50 mgKOH / g or more, More preferably, it is 250 mgKOH / g or more, More preferably, it is 450 mgKOH / g or less.
By containing a metallic detergent, the friction characteristics of the synchronizer are improved. Specifically, when the static friction coefficient decreases, the degree of catching during the shift operation decreases, and when the dynamic friction coefficient increases, the time required for the shift operation can be reduced. However, when the base number exceeds 500 mgKOH / g, the effect becomes unstable. Regarding this friction characteristic, calcium is preferable as the metal, and sulfonate is more preferable.
When a metal detergent is blended in the lubricating oil composition of the present invention, the blending amount is usually 0.001 to 0.5 mass based on the total amount of the lubricating oil composition, in terms of alkali metal or alkaline earth metal element. % Is preferred.
また、本発明の潤滑油組成物は、さらにその性能を高める目的で、その目的に応じて潤滑油に一般的に使用されている任意の添加剤を含有させることができる。このような添加剤としては、例えば、無灰分散剤、摩擦調整剤、摩耗防止剤（または極圧剤）、酸化防止剤、腐食防止剤、流動点降下剤、防錆剤、抗乳化剤、金属不活性化剤、消泡剤、着色剤等に代表される各種添加剤を単独で、又は数種類組み合わせて配合することができる。 In addition, the lubricating oil composition of the present invention may contain any additive generally used in lubricating oils for the purpose of further improving the performance. Such additives include, for example, ashless dispersants, friction modifiers, antiwear agents (or extreme pressure agents), antioxidants, corrosion inhibitors, pour point depressants, rust inhibitors, demulsifiers, metal non-emulsifiers. Various additives typified by an activator, an antifoaming agent, a colorant and the like can be blended alone or in combination.
本発明の潤滑油組成物の１００℃における動粘度は、４．０ｍｍ２／ｓ以上であることが好ましく、４．５ｍｍ２／ｓ以上がより好ましく、５．０ｍｍ２／ｓ以上がさらに好ましい。潤滑油組成物の１００℃動粘度を４．０ｍｍ２／ｓ以上にすることで、十分な潤滑性を確保でき、また潤滑油基油の蒸発損失を抑制することができる。
一方、１００℃における動粘度は、１５ｍｍ２／ｓ以下であることが好ましく、１２ｍｍ２／ｓ以下がより好ましく、１０ｍｍ２／ｓ以下がさらに好ましい。潤滑油組成物の１００℃動粘度を１５ｍｍ２／ｓ以下にすることで、低温粘度特性に優れた潤滑油組成物を得られる。
Kinematic viscosity at 100 ° C. of the lubricating oil composition of the present invention is preferably 4.0 mm 2 / s or higher, more preferably at least 4.5 mm 2 / s, still more preferably at least 5.0 mm 2 / s. By setting the 100 ° C. kinematic viscosity of the lubricating oil composition to 4.0 mm 2 / s or more, sufficient lubricity can be secured and evaporation loss of the lubricating base oil can be suppressed.
Meanwhile, the kinematic viscosity at 100 ° C., preferably not more than 15 mm 2 / s, more preferably not more than 12 mm 2 / s, more preferably not more than 10 mm 2 / s. By setting the 100 ° C. kinematic viscosity of the lubricating oil composition to 15 mm 2 / s or less, a lubricating oil composition having excellent low-temperature viscosity characteristics can be obtained.
本発明の潤滑油組成物のシンクロナイザーでの摩擦係数は、好ましくは０．１２５以上であり、より好ましくは０．１３０以上、さらに好ましくは０．１３５以上である。 The friction coefficient in the synchronizer of the lubricating oil composition of the present invention is preferably 0.125 or more, more preferably 0.130 or more, and further preferably 0.135 or more.
本発明の潤滑油組成物は、手動変速機に好適に使用できるが、特にシンクロナイザーリングとしてカーボン材を使用する手動変速機に好適に用いることができる。 The lubricating oil composition of the present invention can be suitably used for a manual transmission, but can be particularly suitably used for a manual transmission using a carbon material as a synchronizer ring.
以下に実施例を挙げて本発明を具体的に説明するが、本発明はこれらの実施例に限定されるものではない。 EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples.
（実施例１〜６、比較例１〜３）
表１に示す組成の潤滑油組成物を調製した。基油、各添加剤の添加量（質量％）は組成物全量基準である。各潤滑油組成物の性状について各種試験により評価し表１に併記した。
(Examples 1-6, Comparative Examples 1-3)
Lubricating oil compositions having the compositions shown in Table 1 were prepared. The addition amount (% by mass) of the base oil and each additive is based on the total amount of the composition. The properties of each lubricating oil composition were evaluated by various tests and listed in Table 1.
（参考例１、比較例４〜５）
シンクロナイザーリングの材質による違いを評価するため表２に示す組成の潤滑油組成物を調製した。基油、各添加剤の添加量（質量％）は組成物全量基準である。試験結果は表２に併記した。
(Reference Example 1, Comparative Examples 4 to 5)
In order to evaluate the difference depending on the material of the synchronizer ring, a lubricating oil composition having the composition shown in Table 2 was prepared. The addition amount (% by mass) of the base oil and each additive is based on the total amount of the composition. The test results are also shown in Table 2.
表１から明らかなように本発明の潤滑油組成物は、シンクロナイザーでの摩擦においては高い摩擦係数を維持しながら、金属間摩擦係数を大幅に低減し省燃費性を向上させることができる。また表２からわかるように、シンクロナイザーリングがカーボン材の場合に特に効果を奏する。 As is clear from Table 1, the lubricating oil composition of the present invention can significantly reduce the coefficient of friction between metals and improve fuel efficiency while maintaining a high coefficient of friction in the friction with the synchronizer. Further, as can be seen from Table 2, the effect is particularly effective when the synchronizer ring is a carbon material.
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| WO2020213644A1 (en) * | 2019-04-16 | 2020-10-22 | Ｊｘｔｇエネルギー株式会社 | Transmission lubricating oil composition |
| JP2021167395A (en) * | 2020-04-10 | 2021-10-21 | 株式会社豊田中央研究所 | Gear and driving unit |
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| JP2021167395A (en) * | 2020-04-10 | 2021-10-21 | 株式会社豊田中央研究所 | Gear and driving unit |
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