CN110869477B - Lubricant composition, in particular for friction inhibition - Google Patents
Lubricant composition, in particular for friction inhibition Download PDFInfo
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- CN110869477B CN110869477B CN201880027325.5A CN201880027325A CN110869477B CN 110869477 B CN110869477 B CN 110869477B CN 201880027325 A CN201880027325 A CN 201880027325A CN 110869477 B CN110869477 B CN 110869477B
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- Prior art keywords
- molybdenum
- nitrogen atom
- oxygen atom
- carbon atoms
- lubricant composition
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- 239000000203 mixture Substances 0.000 title claims abstract description 97
- 239000000314 lubricant Substances 0.000 title claims abstract description 64
- 230000005764 inhibitory process Effects 0.000 title description 2
- 150000001875 compounds Chemical class 0.000 claims abstract description 52
- 239000002199 base oil Substances 0.000 claims abstract description 21
- 239000002245 particle Substances 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 17
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 125000004432 carbon atom Chemical group C* 0.000 claims description 51
- -1 molybdenum dithiocarbamate compound Chemical class 0.000 claims description 42
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 35
- 229910052750 molybdenum Inorganic materials 0.000 claims description 33
- 239000011733 molybdenum Substances 0.000 claims description 33
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 28
- 239000003446 ligand Substances 0.000 claims description 24
- 229910052757 nitrogen Inorganic materials 0.000 claims description 23
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 22
- 150000001408 amides Chemical class 0.000 claims description 10
- 229920006395 saturated elastomer Polymers 0.000 claims description 9
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 8
- 239000000194 fatty acid Substances 0.000 claims description 8
- 229930195729 fatty acid Natural products 0.000 claims description 8
- 150000004665 fatty acids Chemical class 0.000 claims description 8
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 claims description 8
- 239000012990 dithiocarbamate Substances 0.000 claims description 7
- 150000002148 esters Chemical class 0.000 claims description 6
- 125000004417 unsaturated alkyl group Chemical group 0.000 claims description 6
- 150000001412 amines Chemical class 0.000 claims description 5
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- 238000004519 manufacturing process Methods 0.000 claims description 3
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 229910052729 chemical element Inorganic materials 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
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- DKVNPHBNOWQYFE-UHFFFAOYSA-N carbamodithioic acid Chemical compound NC(S)=S DKVNPHBNOWQYFE-UHFFFAOYSA-N 0.000 claims 2
- 229910052982 molybdenum disulfide Inorganic materials 0.000 abstract description 10
- 239000005078 molybdenum compound Substances 0.000 abstract description 9
- 229910052961 molybdenite Inorganic materials 0.000 abstract description 6
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 abstract description 6
- 150000002752 molybdenum compounds Chemical class 0.000 abstract description 4
- 230000002411 adverse Effects 0.000 abstract 1
- CYRPECJLOQEQDX-UHFFFAOYSA-N oxo(sulfanylidene)molybdenum Chemical compound O=[Mo]=S CYRPECJLOQEQDX-UHFFFAOYSA-N 0.000 abstract 1
- 125000000217 alkyl group Chemical group 0.000 description 31
- 239000000654 additive Substances 0.000 description 27
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- 125000004434 sulfur atom Chemical group 0.000 description 7
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- 125000003342 alkenyl group Chemical group 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 5
- 230000001050 lubricating effect Effects 0.000 description 5
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- DKVNPHBNOWQYFE-UHFFFAOYSA-M carbamodithioate Chemical compound NC([S-])=S DKVNPHBNOWQYFE-UHFFFAOYSA-M 0.000 description 4
- 125000000392 cycloalkenyl group Chemical group 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 4
- 239000002270 dispersing agent Substances 0.000 description 4
- 239000003607 modifier Substances 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- 239000003513 alkali Substances 0.000 description 3
- APUPEJJSWDHEBO-UHFFFAOYSA-P ammonium molybdate Chemical compound [NH4+].[NH4+].[O-][Mo]([O-])(=O)=O APUPEJJSWDHEBO-UHFFFAOYSA-P 0.000 description 3
- 239000011609 ammonium molybdate Substances 0.000 description 3
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- OTYNBGDFCPCPOU-UHFFFAOYSA-N phosphane sulfane Chemical compound S.P[H] OTYNBGDFCPCPOU-UHFFFAOYSA-N 0.000 description 3
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- 230000003746 surface roughness Effects 0.000 description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- UQRONKZLYKUEMO-UHFFFAOYSA-N 4-methyl-1-(2,4,6-trimethylphenyl)pent-4-en-2-one Chemical group CC(=C)CC(=O)Cc1c(C)cc(C)cc1C UQRONKZLYKUEMO-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- 239000005069 Extreme pressure additive Substances 0.000 description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 238000000149 argon plasma sintering Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
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- 230000007423 decrease Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical class C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 2
- 150000002118 epoxides Chemical class 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910000476 molybdenum oxide Inorganic materials 0.000 description 2
- KHYKFSXXGRUKRE-UHFFFAOYSA-J molybdenum(4+) tetracarbamodithioate Chemical class C(N)([S-])=S.[Mo+4].C(N)([S-])=S.C(N)([S-])=S.C(N)([S-])=S KHYKFSXXGRUKRE-UHFFFAOYSA-J 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
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- 238000007254 oxidation reaction Methods 0.000 description 2
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 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
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- ZZVUWRFHKOJYTH-UHFFFAOYSA-N diphenhydramine Chemical group C=1C=CC=CC=1C(OCCN(C)C)C1=CC=CC=C1 ZZVUWRFHKOJYTH-UHFFFAOYSA-N 0.000 description 1
- CZZYITDELCSZES-UHFFFAOYSA-N diphenylmethane Chemical group C=1C=CC=CC=1CC1=CC=CC=C1 CZZYITDELCSZES-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 150000004659 dithiocarbamates Chemical class 0.000 description 1
- 125000005066 dodecenyl group Chemical group C(=CCCCCCCCCCC)* 0.000 description 1
- 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 1
- 238000002296 dynamic light scattering Methods 0.000 description 1
- 238000001493 electron microscopy Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 229930195712 glutamate Natural products 0.000 description 1
- 125000005456 glyceride group Chemical group 0.000 description 1
- 150000002314 glycerols Chemical class 0.000 description 1
- 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 1
- 125000006038 hexenyl group Chemical group 0.000 description 1
- 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 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 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
- 238000005461 lubrication Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 150000002751 molybdenum Chemical class 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 125000001802 myricyl 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])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- AFFLGGQVNFXPEV-UHFFFAOYSA-N n-decene Natural products CCCCCCCCC=C AFFLGGQVNFXPEV-UHFFFAOYSA-N 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000005609 naphthenate group Chemical class 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000005187 nonenyl group Chemical group C(=CCCCCCCC)* 0.000 description 1
- 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 1
- 125000004365 octenyl group Chemical group C(=CCCCCCC)* 0.000 description 1
- 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 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000000399 optical microscopy Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 125000002255 pentenyl group Chemical group C(=CCCC)* 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 125000004368 propenyl group Chemical group C(=CC)* 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 150000003902 salicylic acid esters Chemical class 0.000 description 1
- 229930195734 saturated hydrocarbon Natural products 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- PJANXHGTPQOBST-UHFFFAOYSA-N stilbene Chemical compound C=1C=CC=CC=1C=CC1=CC=CC=C1 PJANXHGTPQOBST-UHFFFAOYSA-N 0.000 description 1
- 150000003440 styrenes Chemical class 0.000 description 1
- 125000005504 styryl group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-L succinate(2-) Chemical compound [O-]C(=O)CCC([O-])=O KDYFGRWQOYBRFD-UHFFFAOYSA-L 0.000 description 1
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical class O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- 125000001273 sulfonato group Chemical class [O-]S(*)(=O)=O 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 125000005063 tetradecenyl group Chemical group C(=CCCCCCCCCCCCC)* 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 150000003626 triacylglycerols Chemical class 0.000 description 1
- 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 1
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 description 1
- 125000002221 trityl group Chemical group [H]C1=C([H])C([H])=C([H])C([H])=C1C([*])(C1=C(C(=C(C(=C1[H])[H])[H])[H])[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 125000005065 undecenyl group Chemical group C(=CCCCCCCCCC)* 0.000 description 1
- 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 1
- 229930195735 unsaturated hydrocarbon Natural products 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 125000005023 xylyl group Chemical group 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M141/00—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential
- C10M141/12—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential at least one of them being an organic compound containing atoms of elements not provided for in groups C10M141/02 - C10M141/10
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/08—Amides
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/08—Amides
- C10M2215/082—Amides containing hydroxyl groups; Alkoxylated derivatives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/06—Thio-acids; Thiocyanates; Derivatives thereof
- C10M2219/062—Thio-acids; Thiocyanates; Derivatives thereof having carbon-to-sulfur double bonds
- C10M2219/066—Thiocarbamic type compounds
- C10M2219/068—Thiocarbamate metal salts
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/045—Metal containing thio derivatives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2290/00—Mixtures of base materials or thickeners or additives
- C10M2290/02—Mineral base oils; Mixtures of fractions
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2290/00—Mixtures of base materials or thickeners or additives
- C10M2290/04—Synthetic base oils
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2010/00—Metal present as such or in compounds
- C10N2010/08—Groups 4 or 14
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2010/00—Metal present as such or in compounds
- C10N2010/12—Groups 6 or 16
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/055—Particles related characteristics
- C10N2020/06—Particles of special shape or size
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/02—Pour-point; Viscosity index
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/25—Internal-combustion engines
Abstract
The present invention relates to lubricant compositions. It is often desirable to use large amounts of organo-molybdenum compounds in lubricant compositions that can adversely affect the lubricated parts. The invention provides a method for improving the conversion rate of an organic molybdenum compound MoS2 in a lubricant composition and avoiding the generation of sulfur molybdenum oxide in the lubricant composition, which comprises adding: at least one base oil; 0.05 to 1.5% by weight of an organomolybdenum compound; and 0.005% to 1% by weight of TiO2 particles. The lubricant composition can reduce friction between parts and reduce part wear.
Description
[ technical field ] A method for producing a semiconductor device
The present application relates to novel lubricant compositions, especially for internal combustion engines, especially for vehicle engines, especially for motor vehicles. In a particularly preferred manner, the present invention relates to a lubricant composition for reducing friction between parts.
[ background of the invention ]
It is known to use molybdenum-based compounds, particularly organo-molybdenum compounds, as friction modifiers in lubricant compositions. These organomolybdenum compounds are formed into MoS through tribochemical decomposition by contact causing friction in the presence of iron2Making it possible to limit the friction between the parts. However, during this tribochemical decomposition, a portion of the organomolybdenum compound is converted to molybdenum oxide and molybdenum oxysulfide that have no effect on friction limitation. Thus, it is often desirable to use large amounts of organomolybdenum compounds in lubricant compositions (to optimize the resulting MoS2Amount of (b) but this may have a detrimental effect on the lubricated part, especially in the case of parts coated with carbon, corrosion, contamination and deterioration of the coating.
In particular, CN104450069 discloses a method comprising MoS2And titanium particles (including TiO)2) To reduce friction and wear of parts.
In particular, US5709936 also discloses part coatings comprising titanium (especially titanium carbide or titanium nitride) in order to reduce friction.
WO2011112372 also discloses organomolybdenum compounds comprising an organomolybdenum compound and a titanium-based liposoluble compound.
It would be of interest to provide lubricant compositions that reduce friction between parts and reduce wear of those parts.
It is also of interest to provide lubricant compositions for reducing the amount of introduced molybdenum compounds.
It is an object of the present application to provide a lubricant composition for reducing friction between parts.
It is also an object of the present application to provide such lubricant compositions so as to additionally reduce part wear.
It is also an object of the present application to provide such compositions to allow for a duration of anti-friction effect over a longer period of time.
It is also an object of the present application to provide a lubricant composition that reduces the content of molybdenum compounds.
Still other objects will become apparent upon reading the following description of the invention.
[ summary of the invention ]
These objects are achieved by the present invention which provides a lubricant composition comprising:
-at least one base oil;
-0.05% to 1.5% by weight of an organomolybdenum compound; and
0.005 to 1% by weight of TiO2Particles.
In the context of the present invention, the term "organomolybdenum compound" is intended to mean a compound comprising molybdenum and an organic moiety (i.e., a moiety comprising a carbon atom). Therefore, molybdenum disulfide (MoS) must be understood2) Not the organo-molybdenum compounds according to the invention.
Preferably, TiO2The average size of the particles is between 10nm and 1 μm, preferably between 10nm and 500nm, more preferably between 10nm and 250nm, and even more preferably between 10nm and 150 nm. In the context of the present invention, average particle size means the average particle diameter. This average diameter can be measured by any method known to those skilled in the art, such as counting by optical or electron microscopy, by light scattering or laser diffraction. In particular, the light scattering measurements can be carried out using a Malvern Zetasizer (the so-called "dynamic light scattering" technique), and the laser diffraction measurements can be carried out using a Malvern Mastersizer.
TiO2The particles may in particular be from rutile or anatase.
Preferably, the composition according to the invention comprises 0.08% to 1% by weight of the organomolybdenum compound, relative to the total weight of the lubricant composition.
Preferably, the composition according to the invention comprises 0.01% to 0.8% by weight of TiO, relative to the total weight of the lubricant composition2Particles.
Advantageously, TiO is added to the lubricant composition2The particles make it possible to reduce the amount of organomolybdenum compounds that are typically used to limit friction. In practice, without wishing to be bound by any theory,the inventors have surprisingly demonstrated that organomolybdenum compounds and TiO2The mixture of particles advantageously results in an organomolybdenum compound MoS2Excellent conversion while avoiding the production of molybdenum sulfur oxides in the lubricant composition and thus avoiding the loss of active molybdenum to prevent friction. This particular combination of organomolybdenum and titanium particles according to the present invention thus makes it possible to significantly reduce friction at lower levels of organomolybdenum compound.
The organomolybdenum compound according to the present invention means any organomolybdenum compound that is soluble in oil, particularly base oil.
The organomolybdenum compounds according to the present invention may be selected from organic complexes of molybdenum containing at least one molybdenum (Mo) chemical element with at least one ligand, such as a carboxylate ligand, an ester ligand, an amide ligand, a dithiophosphate ligand, or a dithiocarbamate ligand.
For example, organic complexes of molybdenum with carboxylates, esters, amides can be obtained by reacting molybdenum oxide or ammonium molybdate with fatty substances, glycerides, fatty acids or fatty acid derivatives (esters, amines, amides).
For the purposes of the present invention, carboxylate ligands, ester ligands and amide ligands are free of sulfur and phosphorus.
In one embodiment, the organomolybdenum compounds of the present invention are selected from molybdenum complexes with amide ligands, prepared primarily by reaction of a molybdenum source (which may be, for example, molybdenum trioxide) with a derivative of an amine, and a fatty acid containing, for example, from 4 to 36 carbon atoms, such as the fatty acid contained in a vegetable or animal oil.
The synthesis of such compounds is described, for example, in patents US4889647, EP0546357, US5412130 or EP 1770153.
In a preferred embodiment of the invention, the organomolybdenum compound is selected from an organic complex of molybdenum and an amide ligand, the organic complex being obtained by the reaction of:
(i) mono-, di-or triglyceride fatty substances, or fatty acids,
(ii) an amine source of formula (A):
wherein:
-X1represents an oxygen atom or a nitrogen atom,
-X2represents an oxygen atom or a nitrogen atom,
when X is1Or X2N or m represents 1 when each represents an oxygen atom,
when X is1Or X2N or m represents 2 when each represents a nitrogen atom,
(iii) and a molybdenum source selected from: molybdenum trioxide or molybdate, preferably ammonium molybdate.
Advantageously, the molybdenum source is used in an amount sufficient to provide from 0.1% to 30% of molybdenum, more preferably from 0.1% to 20.0% of molybdenum, relative to the total weight of the molybdenum organic complex with the amide ligand.
In one embodiment according to the present invention, the organomolybdenum compound may include 2% to 8.5% by weight of molybdenum, relative to the total weight of the organomolybdenum complex with the amide ligand.
Preferably, the organomolybdenum compound comprises at least one organic complex of molybdenum of formula (III) or (IV), alone or in a mixture:
wherein:
X1represents an oxygen atom or a nitrogen atom,
X2represents an oxygen atom or a nitrogen atom,
when X is present1When represents an oxygen atom, n represents 1 and when X represents2When represents an oxygen atom, m represents 1;
when X is present1When representing a nitrogen atom, n represents 2 and when X represents2When represents a nitrogen atom, m represents 2;
R1denotes a linear or branched, saturated or unsaturated radical containing from 4 to 36 carbon atoms, preferably from 4 to 20 carbon atoms, advantageously from 6 to 18 carbon atomsAnd alkyl groups of (a) and (b);
wherein:
X1represents an oxygen atom or a nitrogen atom,
X2represents an oxygen atom or a nitrogen atom,
when X is present1When represents an oxygen atom, n represents 1 and when X represents2When represents an oxygen atom, m represents 1;
when X is present1When representing a nitrogen atom, n represents 2 and when X represents2When represents a nitrogen atom, m represents 2;
R1represents a linear or branched, saturated or unsaturated alkyl group containing from 4 to 36 carbon atoms, preferably from 4 to 20 carbon atoms, advantageously from 6 to 18 carbon atoms;
R2denotes a linear or branched, saturated or unsaturated alkyl group containing from 4 to 36 carbon atoms, preferably from 4 to 20 carbon atoms, advantageously from 6 to 18 carbon atoms.
Advantageously, the organic complex of molybdenum of formula (III) or (IV) is prepared by the reaction of:
(i) mono-, di-or triglycerides, or fatty acids,
(ii) diethanolamine or 2- (2-aminoethyl) aminoethanol,
(iii) and a molybdenum source selected from: molybdenum trioxide or molybdate, preferably ammonium molybdate.
More advantageously, the organic complex of molybdenum of formula (III) consists of at least one compound of formula (III-a) or (III-b), alone or in a mixture:
wherein R is1Denotes a linear or branched, saturated or unsaturated chain containing from 4 to 36 carbon atoms, preferably from 4 to 20 carbon atoms, advantageously from 6 to 18 carbon atomsAn alkyl group, a carboxyl group,
wherein R is1Denotes a linear or branched, saturated or unsaturated alkyl group containing from 4 to 36 carbon atoms, preferably from 4 to 20 carbon atoms, advantageously from 6 to 18 carbon atoms.
As an example of a sulfur-free molybdenum complex according to the invention, mention may be made of Molyvan sold by Vanderbilt, Inc
In another embodiment of the invention, the organomolybdenum compound is selected from an organic complex of molybdenum with a dithiophosphate ligand or an organic complex of molybdenum with a dithiocarbamate ligand.
Within the meaning of the present invention, organic complexes of molybdenum with dithiophosphate ligands are also referred to as molybdenum dithiophosphate or Mo-DTP compounds, and organic complexes of molybdenum with dithiocarbamate ligands are also referred to as molybdenum dithiocarbamates or Mo-DTC compounds.
In a more preferred embodiment of the invention, the organo-molybdenum compound is selected from molybdenum dithiocarbamates.
Mo-DTC compounds are complexes formed by the metal core of molybdenum bound to one or more ligands, which are dithiocarbamate alkyl groups. These compounds are well known to those skilled in the art.
In one embodiment of the invention, the Mo-DTC compound may comprise from 1% to 40% by weight, preferably from 2% to 30% by weight, more preferably from 3% to 28% by weight, advantageously from 4% to 15% by weight of molybdenum, relative to the total weight of the Mo-DTC compound.
In another embodiment of the present invention, the Mo-DTC compounds may comprise from 1% to 40% by weight, preferably from 2% to 30% by weight, more preferably from 3% to 28% by weight, advantageously from 4% to 15% by weight of sulfur, based on the total weight of the Mo-DTC compound.
In another embodiment of the invention, the Mo-DTC compound may be selected from those whose molecule has two molybdenum atoms (also known as dimeric Mo-DTC) and those whose molecule has three molybdenum atoms (also known as trimeric Mo-DTP).
In another embodiment of the invention, the trimeric Mo-DTC compounds have the formula Mo3SkLnWherein:
k represents an integer at least equal to 4, preferably ranging from 4 to 10, more preferably ranging from 4 to 7;
n is an integer in the range of 1 to 4, and
l is an alkyl dithiocarbamate group, which contains from 1 to 100 carbon atoms, preferably from 1 to 40 carbon atoms, preferably from 3 to 20 carbon atoms.
As examples of trimeric Mo-DTC compounds according to the invention, mention may be made of the compounds and the processes for their preparation as described in documents WO 98/26030 and US 2003/022954.
In a preferred embodiment of the invention, the Mo-DTC compound is a dimeric Mo-DTC compound.
Examples of dimeric Mo-DTC compounds include compounds as described in EP 0757093, EP150719851, EP 0743354 or EP 1013749 and processes for their preparation.
Dimeric Mo-DTC compounds generally correspond to compounds of the formula (V):
wherein:
R3、R4、R5、R6which may be the same or different, independently represent a hydrocarbon group selected from alkyl, alkenyl, aryl, cycloalkyl or cycloalkenyl groups,
X3、X4、X5、X6which may be the same or different, independently represent an oxygen atom or a sulfur atom.
For the purposes of the present invention, the term "alkyl group" means a linear or branched, saturated or unsaturated hydrocarbon group containing from 1 to 24 carbon atoms, preferably from 4 to 18 carbon atoms.
In one embodiment according to the present invention, the alkyl group is selected from the group consisting of: methyl, ethyl, propyl, isopropyl, n-butyl, isobutyl, tert-butyl, n-pentyl, isopentyl, neopentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, isotridecyl, tetradecyl, hexadecyl, octadecyl, eicosyl, docosyl, tetracosyl, triacontyl, 2-ethylhexyl, 2-butyloctyl, 2-butyldecyl, 2-hexyloctyl, 2-hexyldecyl, 2-octyldecyl, 2-hexyldodecyl, 2-octyldodecyl, 2-decyltetradecyl, 2-dodecylhexadecyl, 2-hexadecyloctadecyl, 2-tetradecyloctadecyl, myristyl, palmityl and stearyl.
For the purposes of the present invention, the term "alkenyl group" means a straight-chain or branched hydrocarbon group comprising at least one double bond and comprising from 2 to 24 carbon atoms. The alkenyl group may be selected from the group consisting of vinyl, allyl, propenyl, butenyl, isobutenyl, pentenyl, isopentenyl, hexenyl, heptenyl, octenyl, nonenyl, decenyl, undecenyl, dodecenyl, tetradecenyl, and oleic acid.
An aryl group within the meaning of the present invention means a polycyclic aromatic hydrocarbon or an aromatic group substituted or unsubstituted by an alkyl group. The aryl group may contain 6 to 24 carbon atoms.
In one embodiment, the aryl group may be selected from the group consisting of: phenyl, tolyl, xylyl, cumyl, mesityl (mesityl), benzyl, phenethyl, styryl, cinnamyl, benzhydryl, trityl, ethylphenyl, propylphenyl, butylphenyl, pentylphenyl, hexylphenyl, heptylphenyl, octylphenyl, nonylphenyl, decylphenyl, undecylphenyl, dodecylphenyl, phenylphenyl, benzylphenyl, phenylstyrene, p-cumylphenyl and naphthyl.
Cycloalkyl groups within the meaning of the present invention mean polycyclic or cyclic hydrocarbons which are substituted or unsubstituted by alkyl groups.
Cycloalkenyl groups within the meaning of the present invention mean polycyclic or cyclic hydrocarbons which are substituted or unsubstituted by alkyl groups and which comprise at least one unsaturated group.
Cycloalkyl groups and cycloalkenyl groups can contain from 3 to 24 carbon atoms.
For the purposes of the present invention, cycloalkyl groups and cycloalkenyl groups may be selected in a non-limiting manner from the group consisting of: cyclopentyl, cyclohexyl, cycloheptyl, methylcyclopentyl, methylcyclohexyl, methylcycloheptyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, methylcyclopentenyl, methylcyclohexenyl.
In a preferred embodiment of the invention, R3、R4、R5、R6Which may be the same or different, independently represent an alkyl group containing from 1 to 24 carbon atoms, preferably from 4 to 18 carbon atoms, or an alkenyl group containing from 2 to 24 carbon atoms.
In one embodiment of the invention, X3、X4、X5、X6May be the same and may be a sulfur atom.
In another embodiment of the present invention, X3、X4、X5、X6May be the same and may be an oxygen atom.
In another embodiment of the present invention, X3And X4May represent a sulfur atom and X5And X6May represent an oxygen atom.
In another embodiment of the present invention, X3And X4Can represent an oxygen atom and X5And X6May represent a sulfur atom.
In another embodiment of the present invention, the ratio of the number of sulfur atoms to the number of oxygen atoms (S/O) of the Mo-DTC compound may vary from (1/3) to (3/1).
In another embodiment of the present invention, the Mo-DTC compound of formula (V) may be selected from the group consisting of symmetric Mo-DTC compounds, asymmetric Mo-DTC compounds, and combinations thereof.
Symmetrical Mo-DTC compounds according to the invention are meant wherein the radical R3、R4、R5、R6The same Mo-DTC compound of formula (V).
The asymmetric Mo-DTC compounds according to the invention are meant to be those in which the radical R is3And R4Same, radical R5And R6Identical and the radicals R3And R4With the radical R5And R6Different Mo-DTC compounds of the formula (V).
In a preferred embodiment of the invention, the Mo-DTC compound is a mixture of at least one symmetrical Mo-DTC compound and at least one asymmetrical Mo-DTC compound.
In one embodiment of the invention, the same R3And R4Represents an alkyl group containing 5 to 15 carbon atoms, preferably 8 to 13 carbon atoms, and the same R5And R6Represents an alkyl group containing 5 to 15 carbon atoms, preferably 8 to 13 carbon atoms, and R3And R4And R5And R6The same or different.
In another embodiment of the invention, the same R3And R4Represents an alkyl group containing 6 to 10 carbon atoms, and the same R5And R6Represents an alkyl group containing 10 to 15 carbon atoms, and R3And R4And R5And R6Different.
In another embodiment of the invention, the same R3And R4Represents an alkyl group containing 10 to 15 carbon atoms, and the same R5And R6Represents an alkyl group containing 6 to 10 carbon atoms, and R3And R4And R5And R6Different.
In another preferred embodiment of the invention, the same R3、R4、R5、R6Represents an alkyl group containing from 5 to 15 carbon atoms, preferably from 8 to 13 carbon atoms.
Advantageously, the compound Mo-DTC is selected from compounds of formula (V) wherein:
-X3and X4Represents an oxygen atom, and represents an oxygen atom,
-X5and X6Represents a sulfur atom, and represents a sulfur atom,
-R3represents an alkyl group containing 8 carbon atoms or an alkyl group containing 13 carbon atoms,
-R4represents an alkyl group containing 8 carbon atoms or an alkyl group containing 13 carbon atoms,
-R5represents an alkyl group containing 8 carbon atoms or an alkyl group containing 13 carbon atoms,
-R6represents an alkyl group containing 8 carbon atoms or an alkyl group containing 13 carbon atoms.
Advantageously, therefore, the Mo-DTC compounds are chosen from compounds of the formula (V-a)
Wherein the radical R3、R4、R5、R6As defined for formula (V).
More advantageously, the compound Mo-DTC is a mixture of:
-wherein R is3、R4、R5、R6A Mo-DTC compound of formula (V-a) which represents an alkyl group containing 8 carbon atoms,
-wherein R is3、R4、R5、R6A Mo-DTC compound of formula (V-a) representing an alkyl group containing 13 carbon atoms, and/or
-wherein R is3And R4Represents an alkyl group containing 8 carbon atoms and R5And R6A Mo-DTC compound of formula (V-a) which represents an alkyl group containing 13 carbon atoms.
Examples of Mo-DTC compounds which may be mentioned are Molyvan sold by the company R.T. VanderbiltMolyvanOr MolyvanOr Sakura-lube sold by Adeka corporationSakura-lubeAnd the Sakura-lube productOr Sakura-lube
The lubricant composition according to the present invention may further comprise at least one anti-wear additive selected from phosphorus-sulfur-containing additives, such as zinc alkylthiophosphates, and more specifically zinc dialkyldithiophosphates.
Generally, the lubricant compositions according to the present invention may comprise any type of mineral lubricating base oil known to those skilled in the art, either synthetic or natural, animal or vegetable.
The base oil used in the lubricant composition according to the invention may be an oil of mineral or synthetic origin (or its equivalent classified according to ATIEL) (table a) or a mixture thereof belonging to groups I to V classified according to the definition in the API classification.
TABLE A
The mineral base oils according to the invention include all types of base oils obtained by: crude oil is atmospheric and vacuum distilled prior to refining operations such as solvent extraction, desulphation, solvent dewaxing, hydrotreating, hydrocracking, hydroisomerization, and hydrofinishing.
Mixtures of synthetic and mineral oils may also be used.
The use of different lubricating base oils to prepare lubricant compositions according to the invention is generally not limiting, but they must have suitable characteristics for use in an engine or vehicle transmission, in particular viscosity, viscosity index, sulphur content, oxidation resistance.
The base oil of the lubricant composition according to the invention may also be selected from synthetic oils such as certain carboxylic acid esters and alcohols, and polyalphaolefins. Polyalphaolefins used as base oils are, for example, obtained from monomers containing from 4 to 32 carbons, for example from octene or decene, and have a viscosity at 100 ℃ of 1.5 and 15mm according to ASTM D4452.s-1In the meantime. The average molecular weight is generally between 250 and 3000 according to ASTM D5296.
Preferably, the base oil of the present invention is selected from the above base oils, having an aromatic content between 0 and 45%, preferably between 0 and 30%. The aromatic content of the oil was measured according to the burdet UV method. Without wishing to be bound by any theory, the aromaticity of the base oil is a characteristic that enables operation as a function of temperature according to the optimized polymer. The selection of low aromatic oils allows the best to be achieved at higher temperatures.
Advantageously, the lubricant composition according to the invention comprises at least 50% by weight of base oil, relative to the total weight of the composition. More advantageously, the lubricant composition according to the invention comprises at least 60% by weight, or even at least 70% by weight, of base oil, relative to the total weight of the composition.
More particularly advantageously, the lubricant composition according to the invention comprises from 60% to 99.5% by weight of base oil, preferably from 70% to 99.5% by weight of base oil, relative to the total weight of the composition.
Many additional additives may be used in the lubricant composition according to the present invention.
Preferably the additional additive used in the lubricant composition according to the invention is selected from the group consisting of detergent additives, antiwear additives other than phosphorus-sulphur additives, friction modifying additives other than organo-molybdenum compounds, extreme pressure additives, dispersants, pour point improvers, anti-foaming agents, thickeners, and mixtures thereof.
Amine phosphates are anti-wear additives that may be used in lubricant compositions according to the present invention. However, the phosphorus provided by these additives may act as a poison to automotive catalytic systems because these additives are ash generators. These effects can be minimized by partial substitution of the amine phosphate with non-phosphorus additives such as polysulfones, especially sulfur-containing olefins.
Advantageously, the lubricant composition according to the invention may comprise from 0.01% to 6% by weight, preferably from 0.05% to 4% by weight, more preferably from 0.1% to 2% by weight of antiwear and extreme pressure additives, relative to the total weight of the lubricant composition.
Advantageously, the lubricant composition according to the invention may comprise at least one additional friction modifier additive different from the organomolybdenum compound. The additional friction modifier additives may be selected from the group consisting of metal element providing compounds and ashless compounds. Among the compounds providing the metallic element, transition metal complexes such as Sb, Sn, Fe, Cu, Zn, whose ligands may be hydrocarbon compounds containing oxygen, nitrogen, sulfur or phosphorus, may be mentioned. Ashless friction modifier additives are generally of organic origin and may be selected from monoesters of fatty acids and polyols, fatty epoxides, borate fatty epoxides; or glycerol esters of fatty acids. According to the invention, the aliphatic compound comprises at least one hydrocarbon group comprising from 10 to 24 carbon atoms.
Advantageously, the lubricant composition according to the invention may comprise at least one antioxidant additive.
Antioxidant additives are commonly used to delay the degradation of lubricant compositions in service. This degradation can lead to deposit formation, sludge presence, or increased viscosity of the lubricant composition, among other things.
The antioxidant additive acts in particular as a radical inhibitor or breaker for the hydroxide. Among the antioxidant additives commonly used, mention may be made of phenolic antioxidant additives, aminic antioxidant additives, antioxidant phosphorus-sulfur additives. Some of these antioxidant additives, e.g. phosphorus sulfur antioxidant additionThe agent may be an ash generating agent. The phenolic antioxidant additives may be ashless or may be in the form of neutralized or basic metal salts. The antioxidant additive may be chosen in particular from sterically hindered phenols, sterically hindered phenol esters and sterically hindered phenols comprising a thioether bridge, diphenylamines, substituted with at least one C1-C12Alkyl group substituted diphenylamines, N' -dialkyl-aryl diamines, and mixtures thereof.
Preferably, according to the invention, the sterically hindered phenol is chosen from compounds comprising a phenol group in which at least one carbon ortho to the carbon bearing the alcohol function is substituted by at least one C1-C10Alkyl radical, preferably C1-C6Alkyl radical, preferably C4Alkyl groups, preferably tert-butyl groups.
Amino compounds are another class of antioxidant additives, which may optionally be used in combination with phenolic antioxidant additives. Examples of amine compounds are aromatic amines, e.g. of formula NR7R8R9Wherein R is7Represents an optionally substituted aliphatic or aromatic radical, R8Represents an optionally substituted aromatic radical, R9Represents a hydrogen atom, an alkyl group, an aryl group or the formula R10S(O)zR11Wherein R is10Represents an alkylene group or alkenylene group, R11Represents an alkyl group, an alkenyl group or an aryl group and z represents 0, 1 or 2.
Sulfurized alkylphenols or their alkali and alkaline earth metal salts can also be used as antioxidant additives.
Another class of antioxidant additives are copper compounds such as copper thiophosphates or dithiophosphates, copper and carboxylates, dithiocarbamates, sulfonates, phenates, copper acetylacetonate. Copper salts I and II, succinate or anhydride salts may also be used.
The lubricant composition according to the invention may contain all types of antioxidant additives known to the person skilled in the art.
Advantageously, the lubricant composition comprises at least one ashless antioxidant additive.
Also advantageously, the lubricant composition according to the invention comprises from 0.5% to 2% by weight of at least one antioxidant additive, relative to the total weight of the composition.
The lubricant composition according to the invention may also comprise at least one detergent additive.
Detergent additives generally enable the formation of deposits on the surface of metal parts to be reduced by dissolving secondary oxidation and combustion products.
Detergent additives useful in lubricant compositions according to the present invention are generally known to those skilled in the art. The detergent additive may be an anionic compound comprising a long lipophilic hydrocarbon chain and a hydrophilic head. The associated cation may be a metal cation of an alkali metal or alkaline earth metal.
The detergent additive is preferably selected from alkali or alkaline earth metal salts of carboxylic acids, sulphonates, salicylates, naphthenates and phenates. The alkali and alkaline earth metals are preferably calcium, magnesium, sodium or barium.
These metal salts generally contain a stoichiometric or excess amount of metal, and thus are present in an amount greater than the stoichiometric amount. It then relates to an overbased detergent additive; thus, the excess metal imparting overbased character to the detergent additive is typically in the form of an oil-insoluble metal salt, for example a carbonate, hydroxide, oxalate, acetate, glutamate, preferably a carbonate.
Advantageously, the lubricant composition according to the invention may comprise from 2% to 4% by weight of detergent additive relative to the total weight of the lubricant composition.
Also advantageously, the lubricant composition according to the invention may further comprise at least one pour point depressant additive.
Pour point depressant additives generally improve the cold properties of lubricant compositions according to the present invention by slowing the formation of paraffin wax crystals.
As examples of pour point depressant additives mention may be made of polyalkylmethacrylates, polyacrylates, polyarylamides, polyalkylphenols, polyalkylnaphthalenes and alkylated polystyrenes.
Advantageously, the lubricant composition according to the invention may also comprise at least one dispersant.
The dispersant may be selected from mannich bases, succinimides and derivatives thereof.
Also advantageously, the lubricant composition according to the invention may comprise from 0.2% to 10% by weight of dispersant relative to the total weight of the lubricant composition.
The lubricant compositions of the present invention may also comprise at least one additional polymer that improves the viscosity index. Examples of additional polymers that improve the viscosity index may be mentioned polymeric esters, homo-or copolymers, hydrogenated or non-hydrogenated styrene, butadiene and isoprene, Polymethacrylates (PMA).
The present invention also relates to the use of a lubricant composition as defined above for the lubrication of an engine, in particular an internal combustion engine, for example a vehicle engine.
Advantageously, the lubricant composition according to the invention can reduce friction, in particular between two parts of an engine, in particular between an internal combustion engine, for example a vehicle engine.
Accordingly, the present invention relates to the use of a lubricant composition according to the present invention for reducing wear on parts of an engine (e.g. a vehicle engine).
The present application also relates to a method of lubricating a mechanical part, in particular in an engine, in particular in an internal combustion engine, comprising at least one step of contacting at least one part with a lubricant composition according to the invention.
[ description of the drawings ]
The invention will now be illustrated by means of non-limiting examples.
Figure 1 shows the X-ray photoelectron spectrum (which gives the binding energy (eV)) generated on the lubricating film (produced from the composition according to the invention) obtained at the end of the tribological test of steel/steel parts.
[ detailed description ] embodiments
Example 1: lubricant composition
Compositions of Table 1 (CL: Lubricant compositions according to the invention)CC: comparative composition) was prepared by reacting TiO2The particles and the organic molybdenum compound are mixed in the base oil at 60 ℃ to obtain a good dispersion of the particles.
TABLE 1 Lubricant compositions according to the invention and comparative examples
Example 2: results of tribology tests
2.1 testing of alternative frictionizer spheres
The coefficient of friction and wear of the ball (diameter of the spherical pit in microns) were measured on an alternating ball planometer (table 2). These tests were performed by replacing the mechanical part with a flat surface for each test. The parts used were as follows:
-the ball has a diameter of 5mm and is a mechanical part made of reference steel AISI52100, with a surface roughness (Ra) of 50 nm;
-the plane is a flat mechanical part selected from:
PM 1: reference steel AISI 52100; or
PM 2: made of APS steel plasma treated steel.
Wherein
The surface roughness (Ra) of PM1 was 50 nm.
The surface roughness (Ra) of PM2 is between 170 and 200 nm.
The conditions for the alternative tribometer sphere test were:
-temperature: 100 deg.C
-frequency: 5Hz
-maximum contact pressure: 700MPa
-length of trace: 5mm
Duration 1h
-volume of lubricant composition 2-3mL
The coefficients of friction and wear of the balls (spherical pit diameters in μm) shown in table 2 were measured after contacting smooth-surface balls (Ra 50nm) with a smooth surface (Ra 50nm) of a flat part PM1 or a rough surface (Ra 170 nm) of a flat part PM2, respectively, which parts were also contacted with the composition according to the invention or the comparative composition.
TABLE 2 coefficient of friction and wear of the balls measured on an alternating spherical tribometer during contact of the balls with parts PM1 and PM2, respectively, the parts also being in contact with the composition according to the invention or with a comparative composition
Nd: not determined
These results show that:
when the lubricant composition comprises an organomolybdenum compound and titanium, the coefficient of friction between the balls/PM 1 decreases regardless of the contents of the organomolybdenum compound and titanium. This coefficient of friction measured between two smooth surface parts enables determination of the MoS of the organomolybdenum compound2And (4) forming. However, with PM1 parts having smooth surfaces, the frictional contact is reduced relative to the frictional contact between smooth surface parts and rough surface parts (such as PM 2).
For both types of surfaces (smooth or rough), the wear of the balls is lower when the composition according to the invention (CL1 or CL3) is combined with a base oil, compared to the base oil alone or in combination with a comparative composition (CC1, CC3 or CC 4).
When the concentration of the organomolybdenum compound (composition CL3) was reduced, the coefficient of friction and wear of the balls were significantly reduced relative to the oil alone and compared to the comparative composition.
When the lubricant composition comprises an organomolybdenum compound and titanium, the coefficient of friction between the balls/PM 2 (rough surface) decreases regardless of the contents of the organomolybdenum compound and titanium.
There is a synergy between the molybdenum and titanium particles within the lubricant composition that significantly reduces the coefficient of friction and thus limits friction between the parts.
Example 3: x-ray spectroscopy
The lubricating films obtained at the end of the friction ball/PM 1 test (from compositions CL1 and CC3) were subjected to X-ray photoelectron spectroscopy.
Figure 1 shows the top spectrum of composition CC3 and the bottom spectrum of composition CL 1. The figure shows that in the absence of TiO2In the case of particles (CC3), the decomposition of MoDTC is incomplete and leads to the formation of large amounts of MoS2And MoOxSy molybdenum oxysulfide. In contrast, TiO2The presence of (A) can lead to better decomposition of MoDTC and the formation of pure MoS2。
Claims (9)
1. Method for increasing the MoS of an organomolybdenum compound in a lubricant composition for friction suppression2While avoiding the production of molybdenum sulfur oxide therein, comprising adding to the lubricant composition:
-at least one base oil;
-0.05% to 1.5% by weight of an organomolybdenum compound; and
0.005 to 1% by weight of TiO2Particles.
2. The method of claim 1, wherein the average size of the particles is between 10nm and 1 μ ι η.
3. The process according to claim 1 or 2, wherein the amount of the organomolybdenum compound ranges from 0.08% to 1% by weight relative to the total weight of the composition.
4. The method of claim 1 or 2, wherein the TiO2The amount of particles is from 0.01% to 0.8% by weight relative to the total weight of the composition.
5. The process according to claim 1 or 2, wherein the organomolybdenum compound is selected from organic complexes of molybdenum comprising at least one molybdenum Mo chemical element with at least one ligand selected from carboxylate and ester, amide, dithiophosphate or dithiocarbamate ligands.
6. The process according to claim 1 or 2, wherein the organomolybdenum compound is selected from an organic complex of molybdenum with an amide ligand, the organic complex being obtained by the reaction of:
(i) mono-, di-or triglyceride fatty substances, or fatty acids,
(ii) an amine source of formula (A):
wherein:
-X1represents an oxygen atom or a nitrogen atom,
-X2represents an oxygen atom or a nitrogen atom,
when X is1Or X2N or m represents 1 when each represents an oxygen atom,
when X is1Or X2N or m represents 2 when each represents a nitrogen atom,
(iii) and a molybdenum source selected from: molybdenum trioxide or molybdate.
7. The process according to claim 1 or 2, wherein the organomolybdenum compound comprises at least one organic complex of molybdenum of formula (III) or (IV), alone or in a mixture:
wherein:
X1represents an oxygen atom or a nitrogen atom,
X2represents an oxygen atom or a nitrogen atom,
when X is present1When represents an oxygen atom, n represents 1 and when X represents2Represents an oxygen atomWhen m represents 1;
when X is present1When representing a nitrogen atom, n represents 2 and when X represents2When represents a nitrogen atom, m represents 2;
R1represents a linear or branched, saturated or unsaturated alkyl group containing from 4 to 36 carbon atoms;
wherein:
X1represents an oxygen atom or a nitrogen atom,
X2represents an oxygen atom or a nitrogen atom,
when X is present1When represents an oxygen atom, n represents 1 and when X represents2When represents an oxygen atom, m represents 1;
when X is present1When representing a nitrogen atom, n represents 2 and when X represents2When represents a nitrogen atom, m represents 2;
R1represents a linear or branched, saturated or unsaturated alkyl group containing from 4 to 36 carbon atoms;
R2represents a linear or branched, saturated or unsaturated alkyl group containing from 4 to 36 carbon atoms.
8. The method according to claim 1 or 2, wherein the organomolybdenum compound is selected from an organic complex of molybdenum with a dithiophosphate ligand or an organic complex of molybdenum with a dithiocarbamate ligand.
9. The process according to claim 1 or 2, wherein the organomolybdenum compound is a molybdenum dithiocarbamate compound MoDTC.
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PCT/EP2018/059249 WO2018189223A1 (en) | 2017-04-11 | 2018-04-11 | Lubricant composition, in particular for limiting friction |
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Also Published As
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FR3065007B1 (en) | 2019-07-05 |
CN110869477A (en) | 2020-03-06 |
EP3609989B8 (en) | 2022-07-13 |
EP3609989B1 (en) | 2022-06-01 |
US20200102522A1 (en) | 2020-04-02 |
EP3609989A1 (en) | 2020-02-19 |
WO2018189223A1 (en) | 2018-10-18 |
FR3065007A1 (en) | 2018-10-12 |
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