EP3274432B1 - Lubricating composition - Google Patents
Lubricating composition Download PDFInfo
- Publication number
- EP3274432B1 EP3274432B1 EP16711811.6A EP16711811A EP3274432B1 EP 3274432 B1 EP3274432 B1 EP 3274432B1 EP 16711811 A EP16711811 A EP 16711811A EP 3274432 B1 EP3274432 B1 EP 3274432B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lubricating composition
- composition according
- group
- branched
- weight
- 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.)
- Active
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- 239000000203 mixture Substances 0.000 title claims description 145
- 230000001050 lubricating effect Effects 0.000 title claims description 110
- 239000003921 oil Substances 0.000 claims description 64
- 229920013639 polyalphaolefin Polymers 0.000 claims description 35
- 229920006395 saturated elastomer Polymers 0.000 claims description 30
- 125000004432 carbon atom Chemical group C* 0.000 claims description 24
- -1 alkyl stearates Chemical class 0.000 claims description 20
- 230000005540 biological transmission Effects 0.000 claims description 16
- 125000000217 alkyl group Chemical group 0.000 claims description 10
- 239000000446 fuel Substances 0.000 claims description 8
- SASYSVUEVMOWPL-NXVVXOECSA-N decyl oleate Chemical compound CCCCCCCCCCOC(=O)CCCCCCC\C=C/CCCCCCCC SASYSVUEVMOWPL-NXVVXOECSA-N 0.000 claims description 6
- 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 claims description 4
- 125000003342 alkenyl group Chemical group 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 229940049964 oleate Drugs 0.000 claims description 3
- 150000001336 alkenes Chemical class 0.000 claims description 2
- KBODESQIOVVMAI-UHFFFAOYSA-N decyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCCCCCCCCCC KBODESQIOVVMAI-UHFFFAOYSA-N 0.000 claims description 2
- 230000000994 depressogenic effect Effects 0.000 claims description 2
- XSCIEKYDPGHXMD-YPKPFQOOSA-N heptyl (z)-octadec-9-enoate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCCCCCCC XSCIEKYDPGHXMD-YPKPFQOOSA-N 0.000 claims description 2
- HIKYVKDNGAULJV-UHFFFAOYSA-N heptyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCCCCCCC HIKYVKDNGAULJV-UHFFFAOYSA-N 0.000 claims description 2
- FIENEGBWDWHXGG-YPKPFQOOSA-N hexyl (z)-octadec-9-enoate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCCCCCC FIENEGBWDWHXGG-YPKPFQOOSA-N 0.000 claims description 2
- SMWDEDPRQFUXNH-UHFFFAOYSA-N hexyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCCCCCC SMWDEDPRQFUXNH-UHFFFAOYSA-N 0.000 claims description 2
- WIBFFTLQMKKBLZ-SEYXRHQNSA-N n-butyl oleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCCCC WIBFFTLQMKKBLZ-SEYXRHQNSA-N 0.000 claims description 2
- YPVZSWAJJTUWSN-UHFFFAOYSA-N nonyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCCCCCCCCC YPVZSWAJJTUWSN-UHFFFAOYSA-N 0.000 claims description 2
- QTDSLDJPJJBBLE-PFONDFGASA-N octyl (z)-octadec-9-enoate Chemical compound CCCCCCCCOC(=O)CCCCCCC\C=C/CCCCCCCC QTDSLDJPJJBBLE-PFONDFGASA-N 0.000 claims description 2
- IIGMITQLXAGZTL-UHFFFAOYSA-N octyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCCCCCCCC IIGMITQLXAGZTL-UHFFFAOYSA-N 0.000 claims description 2
- MOQRZWSWPNIGMP-UHFFFAOYSA-N pentyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCCCCC MOQRZWSWPNIGMP-UHFFFAOYSA-N 0.000 claims description 2
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 4
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical class [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims 1
- YEUKJHYLBPPSQJ-SEYXRHQNSA-N pentyl (z)-octadec-9-enoate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCCCCC YEUKJHYLBPPSQJ-SEYXRHQNSA-N 0.000 claims 1
- 239000000654 additive Substances 0.000 description 24
- 239000003963 antioxidant agent Substances 0.000 description 16
- 230000003647 oxidation Effects 0.000 description 11
- 238000007254 oxidation reaction Methods 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 10
- 150000001875 compounds Chemical class 0.000 description 9
- 239000003599 detergent Substances 0.000 description 9
- 150000002430 hydrocarbons Chemical group 0.000 description 9
- 125000004429 atom Chemical group 0.000 description 8
- 239000002199 base oil Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 230000000996 additive effect Effects 0.000 description 7
- 239000007866 anti-wear additive Substances 0.000 description 7
- 239000000314 lubricant Substances 0.000 description 7
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000005069 Extreme pressure additive Substances 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 150000001412 amines Chemical class 0.000 description 4
- 125000003118 aryl group Chemical group 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000002270 dispersing agent Substances 0.000 description 4
- 229940049918 linoleate Drugs 0.000 description 4
- 150000002989 phenols Chemical class 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- AFFLGGQVNFXPEV-UHFFFAOYSA-N 1-decene Chemical compound CCCCCCCCC=C AFFLGGQVNFXPEV-UHFFFAOYSA-N 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 229920000193 polymethacrylate Polymers 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 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
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- HPEUJPJOZXNMSJ-UHFFFAOYSA-N Methyl stearate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC HPEUJPJOZXNMSJ-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- 150000004982 aromatic amines Chemical class 0.000 description 2
- 150000001735 carboxylic acids Chemical class 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical group C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 2
- 150000002118 epoxides Chemical class 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 239000012208 gear oil Substances 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 239000002530 phenolic antioxidant Substances 0.000 description 2
- 235000021317 phosphate Nutrition 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical class OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 2
- GWHCXVQVJPWHRF-KTKRTIGZSA-N (15Z)-tetracosenoic acid Chemical class CCCCCCCC\C=C/CCCCCCCCCCCCCC(O)=O GWHCXVQVJPWHRF-KTKRTIGZSA-N 0.000 description 1
- 125000000008 (C1-C10) alkyl group Chemical group 0.000 description 1
- 125000004400 (C1-C12) alkyl group Chemical group 0.000 description 1
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 description 1
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 1
- FALRKNHUBBKYCC-UHFFFAOYSA-N 2-(chloromethyl)pyridine-3-carbonitrile Chemical class ClCC1=NC=CC=C1C#N FALRKNHUBBKYCC-UHFFFAOYSA-N 0.000 description 1
- RREANTFLPGEWEN-MBLPBCRHSA-N 7-[4-[[(3z)-3-[4-amino-5-[(3,4,5-trimethoxyphenyl)methyl]pyrimidin-2-yl]imino-5-fluoro-2-oxoindol-1-yl]methyl]piperazin-1-yl]-1-cyclopropyl-6-fluoro-4-oxoquinoline-3-carboxylic acid Chemical compound COC1=C(OC)C(OC)=CC(CC=2C(=NC(\N=C/3C4=CC(F)=CC=C4N(CN4CCN(CC4)C=4C(=CC=5C(=O)C(C(O)=O)=CN(C=5C=4)C4CC4)F)C\3=O)=NC=2)N)=C1 RREANTFLPGEWEN-MBLPBCRHSA-N 0.000 description 1
- XZOYHFBNQHPJRQ-UHFFFAOYSA-N 7-methyloctanoic acid Chemical compound CC(C)CCCCCC(O)=O XZOYHFBNQHPJRQ-UHFFFAOYSA-N 0.000 description 1
- CDQPRLDIAOVHRJ-UHFFFAOYSA-N 9-methyl-11-octylhenicosane Chemical compound CCCCCCCCCCC(CCCCCCCC)CC(C)CCCCCCCC CDQPRLDIAOVHRJ-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- DPUOLQHDNGRHBS-UHFFFAOYSA-N Brassidinsaeure Natural products CCCCCCCCC=CCCCCCCCCCCCC(O)=O DPUOLQHDNGRHBS-UHFFFAOYSA-N 0.000 description 1
- 241000195940 Bryophyta Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 239000005749 Copper compound Substances 0.000 description 1
- URXZXNYJPAJJOQ-UHFFFAOYSA-N Erucic acid Natural products CCCCCCC=CCCCCCCCCCCCC(O)=O URXZXNYJPAJJOQ-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
- WHUUTDBJXJRKMK-VKHMYHEASA-N L-glutamic acid Chemical compound OC(=O)[C@@H](N)CCC(O)=O WHUUTDBJXJRKMK-VKHMYHEASA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- BTHAQRDGBHUQMR-UHFFFAOYSA-N [S]P(=O)=O Chemical compound [S]P(=O)=O BTHAQRDGBHUQMR-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 125000003158 alcohol group Chemical group 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 125000004450 alkenylene group Chemical group 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 150000001449 anionic compounds Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000010719 automatic gear oil Substances 0.000 description 1
- JPNZKPRONVOMLL-UHFFFAOYSA-N azane;octadecanoic acid Chemical class [NH4+].CCCCCCCCCCCCCCCCCC([O-])=O JPNZKPRONVOMLL-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 229910052728 basic metal Inorganic materials 0.000 description 1
- SVGGKWILBMPIJV-UTJQPWESSA-N butyl (9z,12z)-octadeca-9,12-dienoate Chemical compound CCCCC\C=C/C\C=C/CCCCCCCC(=O)OCCCC SVGGKWILBMPIJV-UTJQPWESSA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 150000001734 carboxylic acid salts Chemical class 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000004517 catalytic hydrocracking Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 150000001880 copper compounds Chemical class 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- DPDKELYTFCABNV-DURLKXOLSA-N decyl (9z,12z)-octadeca-9,12-dienoate Chemical compound CCCCCCCCCCOC(=O)CCCCCCC\C=C/C\C=C/CCCCC DPDKELYTFCABNV-DURLKXOLSA-N 0.000 description 1
- 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 1
- 239000012990 dithiocarbamate Substances 0.000 description 1
- 150000004659 dithiocarbamates Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- QYDYPVFESGNLHU-UHFFFAOYSA-N elaidic acid methyl ester Natural products CCCCCCCCC=CCCCCCCCC(=O)OC QYDYPVFESGNLHU-UHFFFAOYSA-N 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- CAMHHLOGFDZBBG-UHFFFAOYSA-N epoxidized methyl oleate Natural products CCCCCCCCC1OC1CCCCCCCC(=O)OC CAMHHLOGFDZBBG-UHFFFAOYSA-N 0.000 description 1
- DPUOLQHDNGRHBS-KTKRTIGZSA-N erucic acid Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(O)=O DPUOLQHDNGRHBS-KTKRTIGZSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229930195712 glutamate Natural products 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
- 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
- 229920001519 homopolymer Polymers 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 150000002432 hydroperoxides Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000003446 ligand Substances 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
- 238000000034 method Methods 0.000 description 1
- QYDYPVFESGNLHU-KHPPLWFESA-N methyl oleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC QYDYPVFESGNLHU-KHPPLWFESA-N 0.000 description 1
- 229940073769 methyl oleate Drugs 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 235000011929 mousse Nutrition 0.000 description 1
- 125000005609 naphthenate group Chemical class 0.000 description 1
- 230000007935 neutral effect Effects 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
- 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
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 150000002942 palmitic acid derivatives Chemical class 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- RWSPHQOPNBVTAO-UTJQPWESSA-N pentyl (9z,12z)-octadeca-9,12-dienoate Chemical compound CCCCCOC(=O)CCCCCCC\C=C/C\C=C/CCCCC RWSPHQOPNBVTAO-UTJQPWESSA-N 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 239000005076 polymer ester Substances 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
- 239000005077 polysulfide Substances 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 150000003873 salicylate salts Chemical class 0.000 description 1
- 238000007789 sealing Methods 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
- 239000001384 succinic acid Substances 0.000 description 1
- 229940014800 succinic anhydride Drugs 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
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 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
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 239000013638 trimer Substances 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Classifications
-
- 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
- C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
- C10M171/002—Traction fluids
-
- 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
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
-
- 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
- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/02—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M111/00—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential
- C10M111/04—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential at least one of them being a macromolecular organic compound
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
- C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
- C10M129/68—Esters
- C10M129/70—Esters of monocarboxylic acids
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/0206—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers used as base material
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
- C10M2205/0285—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms used as base material
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/281—Esters of (cyclo)aliphatic monocarboxylic acids
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- 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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/281—Esters of (cyclo)aliphatic monocarboxylic acids
- C10M2207/2815—Esters of (cyclo)aliphatic monocarboxylic acids used as base material
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- 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
- C10N2020/02—Viscosity; Viscosity index
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- 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
- C10N2020/04—Molecular weight; Molecular weight distribution
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- 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
- C10N2020/065—Saturated Compounds
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- 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
- C10N2020/067—Unsaturated Compounds
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- 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
- C10N2020/069—Linear chain compounds
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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
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/071—Branched chain compounds
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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
- 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
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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
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
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- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
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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
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
- C10N2040/042—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for automatic transmissions
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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
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
- C10N2040/044—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for manual transmissions
Definitions
- the invention relates to the field of lubricating compositions, in particular lubricating compositions for motor vehicles, in particular the field of lubricating compositions for transmission, for gearbox or for axle.
- the lubricating composition according to the invention comprises at least 30% by weight of the composition of at least one monoester, at least one polyalphaolefinic oil (PAO), the kinematic viscosity of which measured at 100 ° C. ranges from 40 to 3000 mm 2 . s -1 and at least one polyalphaolefinic oil (PAO) whose kinematic viscosity measured at 100 ° C ranges from 1.5 to 10 mm 2 .s -1 .
- PAO polyalphaolefinic oil
- the invention also relates to the use of this lubricating composition for reducing the fuel consumption of a vehicle equipped with a transmission, in particular an axle or a gearbox, lubricated by means of this lubricating composition.
- Oils for gearboxes or for axles, and more generally gear oils must meet many requirements, in particular related to driving comfort (perfect gear change, silent operation, trouble-free operation, high reliability), service life of the assembly (reduction of wear during cold passage, no deposits and high thermal and oxidation stability, safe lubrication at high temperatures, stable viscosity situation and absence of shear loss, long life) as well as the consideration of environmental aspects (lower fuel consumption, reduced oil consumption, low noise emission, easy evacuation).
- ATF oils for automatic transmission fluids due to their use, very specific requirements appear for ATF oils which are a great constancy of the coefficient of friction throughout the duration of the stay for optimum gear change, excellent aging stability for long oil change intervals, good viscosity-temperature resistance to ensure perfect operation with a hot engine and a cold engine and sufficient sealing compatibility with different elastomers used in transmission gaskets so that they do not swell, shrink or weaken.
- Lubricating compositions for motor vehicles have an influence on the emission of pollutants and on the fuel consumption.
- Lubricating compositions for vehicle engines allowing energy savings are often referred to as “fuel-eco” (FE), in English terminology.
- FE fuel-eco
- Such “fuel-eco” oils have been developed to meet these new needs. Reducing energy losses is therefore a constant search in the field of lubricating compositions for vehicles.
- JP 2009 203 385 A describes lubricating compositions comprising a monoester compound of formula R 1 C (O) OR 2 with R 1 and R 2 of C13-C28 hydrocarbon groups, and a synthetic hydrocarbon oil exhibiting a kinematic viscosity measured at 100 ° C from 20 to 3 000 mm 2 / s.
- US 2011/177989 A1 describes lubricating compositions for transmissions, in particular for gearboxes, and their use for limiting the fuel consumption of motor vehicles.
- the compositions are suitable for all types of vehicles, in particular light vehicles, and are particularly suitable for vehicles with hybrid engines.
- Lubricating compositions for vehicles must therefore have improved properties and performance. It is in particular necessary to provide alternative lubricating compositions, in particular lubricating compositions having a high viscosity index (VI) as well as a low coefficient of traction.
- VI viscosity index
- the desired lubricating compositions must have a high viscosity index in order to avoid cold energy losses due to friction but also for keep a sufficient film of lubricant hot on the lubricated elements.
- a high viscosity index therefore guarantees less drop in viscosity when the temperature increases.
- the composition according to the invention comprises at least one monoester (a), at least polyalphaolefinic oil (b) and at least one polyalphaolefinic oil (c). It may comprise only one monoester (a), only one polyalphaolefinic oil (b) and only one single polyalphaolefinic oil (c). It can also comprise one, two or three monoesters (a) but also one, two or three polyalphaolefinic oils (b) or even one two or three polyalphaolefinic oils (c).
- the monoester (a) present in the lubricating composition according to the invention is a monoester of formula (I).
- R 1 represents a hydrocarbon group, saturated or unsaturated, linear or branched, comprising from 14 to 20 carbon atoms, preferably from 14 to 18 carbon atoms, more preferably from 16 to 18 carbon atoms.
- R 2 represents a hydrocarbon group, saturated or unsaturated, linear or branched, comprising from 3 to 14 carbon atoms, preferably from 4 to 12 atoms. of carbon, more preferably from 4 to 10 carbon atoms.
- the monoester (a) present in the lubricating composition according to the invention is a monoester of formula (I) in which R 1 and R 2 are linear groups.
- only R 1 or only R 2 is chosen from one or the other of these groups.
- a monoester (a) of formula (I) in which R 1 is a saturated group and R 2 is a saturated group is particularly preferred.
- a monoester (a) of formula (I) in which R 1 is an unsaturated group and R 2 is a saturated group is more particularly preferred.
- the monoester (a) of formula (I) according to the invention can be chosen from numerous monoesters.
- it is chosen from stearates, preferably alkyl stearates and alkenyl stearates, more preferably C 4 -C 10 -alkyl stearates, in particular butyl stearate, pentyl stearate, hexyl stearate, heptyl stearate, octyl stearate, nonyl stearate, decyl stearate.
- stearates preferably alkyl stearates and alkenyl stearates, more preferably C 4 -C 10 -alkyl stearates, in particular butyl stearate, pentyl stearate, hexyl stearate, heptyl stearate, octyl stearate, nonyl stearate, decy
- oleates preferably alkyl oleates and alkenyl oleates, more preferably C 4 -C 10 -alkyl oleates, in particular butyl oleate, oleate. pentyl, hexyl oleate, heptyl oleate, octyl oleate, nonyl oleate, decyl oleate.
- linoleates preferably alkyl linoleates and alkenyl linoleates, more preferably C 4 -C 10 -alkyl linoleates, in particular butyl linoleate, pentyl linoleate, hexyl linoleate, heptyl linoleate, octyl linoleate, nonyl linoleate, decyl linoleate.
- the monoester (a) of formula (I) according to the invention can also be chosen from alkenic monoesters and alkyl monoesters, preferably C 2 -C 10 -alkyl monoesters, in particular ethyl monoesters, propyl monoesters, butyl monoesters, pentyl monoesters, hexyl monoesters, heptyl monoesters, octyl monoesters, nonyl monoesters, decyl monoesters.
- the lubricating composition according to the invention comprises from 30 to 70% by weight of the monoester composition of formula (I). Also advantageously, the lubricating composition according to the invention comprises from 30 to 60% by weight of the composition or from 30 to 50% by weight of the monoester composition of formula (I).
- the lubricating composition according to the invention comprises at least two polyalphaolefinic oils (b) and (c). These are hydrogenated PAOs.
- Polyalphaolefinic oil (b) is a heavy PAO. It has a kinematic viscosity measured at 100 ° C. according to the ASTM D445 standard ranging from 40 to 3000 mm 2 .s -1 .
- Polyalphaolefinic oil (c) is a light PAO. It has a kinematic viscosity measured at 100 ° C. according to the ASTM D445 standard ranging from 1.5 to 10 mm 2 .s -1 .
- the kinematic viscosity of the polyalphaolefinic oil (b), measured at 100 ° C. according to the ASTM D445 standard ranges from 40 to 1500 mm 2 .s -1 . More preferably, the kinematic viscosity of the polyalphaolefinic oil (b), measured at 100 ° C. according to the ASTM D445 standard, ranges from 40 to 300 mm 2 .s -1 .
- the weight average molecular mass of the polyalphaolefinic oil (b) is greater than 2,500 Da or ranges from 2,500 to 80,000 Da. More preferably, the weight average molecular mass of the polyalphaolefinic oil (b) ranges from 4000 to 50,000 Da.
- the polyalphaolefinic oil (b) has a kinematic viscosity, measured at 100 ° C according to the ASTM D445 standard, ranging from 40 to 1500 mm 2 .s -1 and a weight average molecular mass ranging from 2 500 to 80,000 Da or 4,000 to 50,000 Da. More particularly preferably, the polyalphaolefinic oil (b) has a kinematic viscosity, measured at 100 ° C according to the ASTM D445 standard, ranging from 40 to 300 mm 2 .s -1 and a weight average molecular mass ranging from 2 500 to 80,000 Da or 4,000 to 50,000 Da.
- the kinematic viscosity of the polyalphaolefinic oil (c), measured at 100 ° C according to the ASTM D445 standard ranges from 1.5 to 10 mm 2 .s -1 or from 2 to 10 mm 2 .s - 1 . More preferably, the kinematic viscosity of the polyalphaolefinic oil (c), measured at 100 ° C according to the ASTM D445 standard, ranges from 1.5 to 8 mm 2 .s -1 or from 2 to 8 mm 2 .s -1 .
- the weight average molecular mass of the polyalphaolefinic oil (c) is less than 500 Da or ranges from 50 to 500 Da. More preferably, the weight average molecular mass of the polyalphaolefinic oil (c) ranges from 50 to 350 Da or from 50 to 300 Da.
- the polyalphaolefinic oil (c) has a kinematic viscosity, measured at 100 ° C according to the ASTM D445 standard, ranging from 1.5 to 8 mm 2 .s -1 and a weight average molecular mass ranging from 50 to 500 Da or from 50 to 350 Da or from 50 to 300 Da or else a kinematic viscosity, measured at 100 ° C according to the ASTM D445 standard, ranging from 2 to 8 mm 2 .s -1 and an average molecular mass in weight ranging from 50 to 500 Da or from 50 to 350 Da or from 50 to 300 Da.
- the polyalphaolefinic oil (c) has a kinematic viscosity, measured at 100 ° C according to the ASTM D445 standard, ranging from 1.5 to 6 mm 2 .s -1 and a weight average molecular mass ranging from from 50 to 500 Da or from 50 to 350 Da or from 50 to 300 Da or else a kinematic viscosity, measured at 100 ° C according to the ASTM D445 standard, ranging from 2 to 6 mm 2 .s -1 and an average molecular mass by weight ranging from 50 to 500 Da or from 50 to 350 Da or from 50 to 300 Da.
- polyalphaolefinic oil (c) As particular polyalphaolefinic oil (c) according to the invention, mention may also be made of an oil of kinematic viscosity at 100 ° C., measured according to the ASTM D445 standard, ranging from 3 to 4 mm 2 .s -1 , comprising more than 50%. by weight of 9-methyl-11-octyl-henicosane, 1-decene trimer.
- the respective proportions of polyalphaolefinic oils (b) and (c) in the lubricating composition according to the invention can vary.
- the lubricating composition according to the invention comprises from 5 to 30%, preferably from 5 to 25%, by weight of the polyalphaolefinic oil composition (b).
- the lubricating composition according to the invention comprises from 5 to 70%, preferably from 30 to 70%, by weight of the polyalphaolefinic oil composition (c).
- the respective proportions of polyalphaolefinic oils (b) and (c) within the lubricating composition according to the invention can also vary according to the intended application for the lubricating composition according to the invention.
- the lubricating composition according to the invention may comprise from 1 to 40% by weight of the polyalphaolefinic oil composition (b) and from 30 to 69% by weight of the composition.
- polyalphaolefinic oil (c) may comprise from 1 to 40% by weight of the polyalphaolefinic oil composition (b) and from 30 to 69% by weight of the composition.
- the lubricating composition according to the invention can comprise other oils as well as additives.
- the lubricating composition according to the invention can comprise any type of mineral, synthetic or natural, animal or vegetable lubricating base oil, suitable for its use.
- the base oils used in the lubricating compositions according to the invention can be oils of mineral or synthetic origins belonging to groups I to V according to the classes defined in the AP1 classification (or their equivalents according to the ATIEL classification) (table A). or their mixtures.
- Table A ⁇ /u> Saturated content Sulfur content Viscosity index (VI)
- Group I Mineral oils ⁇ 90% > 0.03% 80 ⁇ VI ⁇ 120
- Group III Hydrocracked or hydro-isomerized oils ⁇ 90% ⁇ 0.03% ⁇ 120
- the mineral base oils useful according to the invention include all types of bases obtained by atmospheric and vacuum distillation of crude oil, followed by refining operations such as solvent extraction, dealphating, solvent dewaxing, hydrotreatment, hydrocracking, hydroisomerization. and hydrofinishing. Mixtures of synthetic and mineral oils can also be used.
- lubricating bases there is generally no limitation as to the use of different lubricating bases to produce the lubricating compositions according to the invention, except that they must have properties, in particular of viscosity, viscosity index, sulfur content. , oxidation resistance, suitable for use in engines or for vehicle transmissions.
- the base oils of the lubricating compositions according to the invention can also be chosen from synthetic oils, such as certain esters of carboxylic acids and alcohols, as well as from polyalphaolefins.
- the other polyalphaolefins used as base oils are for example obtained from monomers comprising from 4 to 32 carbon atoms, for example from octene or decene, and whose viscosity at 100 ° C is between 1.5 and 15 mm 2 .s -1 according to the ASTM D445 standard. Their weight average molecular mass is generally between 250 and 3000 Da according to the ASTM D5296 standard.
- the lubricating composition according to the invention comprises at least 50% by mass of base oils relative to the total mass of the composition. More advantageously, the lubricating composition according to the invention comprises at least 60% by mass, or even at least 70% by mass, of base oils relative to the total mass of the composition. Also advantageously, the lubricating composition according to the invention comprises from 75 to 99.9% by mass of base oils relative to the total mass of the composition.
- additives can be used for the lubricating composition according to the invention.
- the preferred additives for the lubricating composition according to the invention are chosen from detergent additives, anti-wear additives, friction modifying additives, extreme pressure additives, dispersants, pour point improvers, anti- mousse, thickeners and mixtures thereof.
- the lubricating composition according to the invention comprises at least one pour point improving additive or PPD agent (for depressant point or pour point reducing agent).
- PPD agent for depressant point or pour point reducing agent
- pour point reducing agents By slowing the formation of paraffin crystals, pour point reducing agents generally improve the cold behavior of the lubricating composition according to the invention.
- pour point reducing agents mention may be made of polymethacrylates of alkyl, polyacrylates, polyarylamides, polyalkylphenols, polyalkylnaphthalenes, alkylated polystyrenes.
- the lubricating composition according to the invention can also comprise at least one anti-wear additive, at least one extreme pressure additive or their mixtures.
- Antiwear additives and extreme pressure additives protect rubbing surfaces by forming a protective film adsorbed on these surfaces.
- antiwear additives are chosen from phospho-sulfur additives such as metal alkylthiophosphates, in particular zinc alkylthiophosphates, and more specifically zinc dialkyldithiophosphates or ZnDTP.
- the compounds preferred are of formula Zn ((SP (S) (OR 3 ) (OR 4 )) 2 , in which R 3 and R 4 , identical or different, independently represent an alkyl group, preferably an alkyl group comprising from 1 to 18 atoms of carbon.
- Amine phosphates are also anti-wear additives which can be used in the lubricating composition according to the invention.
- the phosphorus provided by these additives can act as a poison in the catalytic systems of automobiles because these additives generate These effects can be minimized by partially substituting the amine phosphates with additives which do not provide phosphorus, such as, for example, polysulfides, in particular sulfur-containing olefins.
- invention may comprise from 0.01 to 6% by mass, preferably from 0.05 to 4% by mass, more preferably from 0.1 to 2% by mass relative to the total mass of lubricating composition, of ad anti-wear and extreme pressure additives.
- the lubricating composition according to the invention can comprise at least one friction modifying additive.
- the friction modifier additive can be chosen from a compound providing metallic elements and an ash-free compound.
- the compounds providing metallic elements mention may be made of transition metal complexes such as Mo, Sb, Sn, Fe, Cu, Zn, the ligands of which may be hydrocarbon compounds comprising oxygen, nitrogen or carbon atoms. sulfur or phosphorus.
- the ash-free friction modifying additives are generally of organic origin and can be chosen from fatty acid monoesters and polyols, alkoxylated amines, alkoxylated fatty amines, fatty epoxides, borate fatty epoxides; fatty amines or fatty acid glycerol esters.
- the fatty compounds comprise at least one hydrocarbon group comprising from 10 to 24 carbon atoms.
- the lubricating composition according to the invention can comprise from 0.01 to 2% by mass or from 0.01 to 5% by mass, preferably from 0.1 to 1.5% by mass or from 0.1 at 2% by mass relative to the total mass of the lubricating composition, of friction modifier additive.
- the lubricating composition according to the invention can comprise at least one antioxidant additive.
- the antioxidant additive generally makes it possible to delay the degradation of the lubricating composition in service. This degradation can be reflected in particular by the formation of deposits, by the presence of sludge or by an increase in the viscosity of the lubricating composition.
- Antioxidant additives act in particular as radical inhibitors or destroyers of hydroperoxides.
- antioxidant additives commonly used there may be mentioned antioxidant additives of phenolic type, antioxidant additives of amine type, phosphosulfurized antioxidant additives. Some of these antioxidant additives, for example phosphosulfurized antioxidant additives, can generate ash.
- the phenolic antioxidant additives can be ash free or in the form of neutral or basic metal salts.
- the antioxidant additives can in particular be chosen from sterically hindered phenols, sterically hindered phenol esters and sterically hindered phenols comprising a thioether bridge, diphenylamines, diphenylamines substituted with at least one C 1 -C 12 alkyl group, N , N'-dialkyl-aryl-diamines and mixtures thereof.
- the sterically hindered phenols are chosen from compounds comprising a phenol group of which at least one carbon vicinal of the carbon carrying the alcohol function is substituted by at least one C 1 - C 10 alkyl group, preferably one.
- Amino compounds are another class of antioxidant additives that can be used, optionally in combination with phenolic antioxidant additives.
- Examples of amino compounds are aromatic amines, for example aromatic amines of formula NR 5 R 6 R 7 in which R 5 represents an aliphatic group or an aromatic group, optionally substituted, R 6 represents an aromatic group, optionally substituted, R 7 represents a hydrogen atom, an alkyl group, an aryl group or a group of formula R 8 S (O) z R 9 in which R 8 represents an alkylene group or an alkenylene group, R 9 represents an alkyl group, a alkenyl group or an aryl group and z represents 0, 1 or 2.
- Sulfurized alkyl phenols or their alkali and alkaline earth metal salts can also be used as antioxidant additives.
- Another class of antioxidant additives is that of copper compounds, for example copper thio- or dithio-phosphates, copper and carboxylic acid salts, dithiocarbamates, sulfonates, phenates, copper acetylacetonates. Copper I and II salts, salts of succinic acid or anhydride can also be used.
- the lubricating composition according to the invention can contain all types of antioxidant additives known to those skilled in the art.
- the lubricating composition comprises at least one antioxidant additive free of ash.
- the lubricating composition according to the invention comprises from 0.5 to 2% by weight, relative to the total weight of the composition, of at least one antioxidant additive.
- the lubricating composition according to the invention can also comprise at least one detergent additive.
- Detergent additives generally make it possible to reduce the formation of deposits on the surface of metal parts by dissolving the by-products of oxidation and combustion.
- the detergent additives which can be used in the lubricating composition according to the invention are generally known to those skilled in the art.
- the detergent additives can be anionic compounds comprising a long lipophilic hydrocarbon chain and a hydrophilic head.
- the associated cation can be a metal cation of an alkali or alkaline earth metal.
- the detergent additives are preferably chosen from alkali metal or alkaline earth metal salts of carboxylic acids, sulphonates, salicylates, naphthenates, as well as salts of phenates.
- the alkali metals and alkaline earth metals are preferably calcium, magnesium, sodium or barium.
- These metal salts generally include the metal in a stoichiometric amount or else in excess, therefore in an amount greater than the stoichiometric amount.
- the lubricating composition according to the invention can comprise from 2 to 4% by weight of detergent additive relative to the total mass of the lubricating composition.
- the lubricating composition according to the invention can also comprise at least one dispersing agent.
- the dispersing agent can be chosen from Mannich bases, succinimides and their derivatives.
- the lubricating composition according to the invention can comprise from 0.2 to 10% by mass of dispersing agent relative to the total mass of the lubricating composition.
- the lubricating composition can also comprise at least one polymer improving the viscosity index.
- polymer improving the viscosity index mention may be made of polymer esters, homopolymers or copolymers, hydrogenated or non-hydrogenated, of styrene, butadiene and isoprene, and polymethacrylates (PMA).
- the composition lubricant according to the invention can comprise from 1 to 15% by mass relative to the total mass of the lubricating polymer composition improving the viscosity index.
- the invention also relates to the use as a lubricant of the lubricating composition according to the invention.
- the lubricating composition according to the invention is useful for lubricating a gear system, in particular a vehicle transmission, in particular a axle or a gearbox.
- composition according to the invention is also advantageously used for reducing the fuel consumption of an engine, in particular of a vehicle engine.
- the composition according to the invention is used to reduce the fuel consumption of a vehicle equipped with a transmission, in particular an axle or a gearbox, lubricated by means of this composition.
- the invention also relates to the use of at least one lubricating composition according to the invention for reducing the traction coefficient of a transmission oil, preferably for reducing the traction coefficient of a gearbox oil, in particular of a gearbox of a vehicle.
- the invention also relates to the use for reducing the tensile coefficient of a lubricating composition comprising at least one heavy PAO (b) and at least one light PAO (c) and at least 30% by weight of composition of a monoester. (a) of formula (I) defined according to the invention.
- the uses of the lubricating composition according to the invention comprise bringing at least one element of the transmission, in particular the gearbox or the axle, into contact with a lubricating composition according to the invention.
- Example 1 preparation of lubricating compositions according to the invention
- Decyl oleate (Stéarinerie Dubois) is mixed with a heavy PAO (product Spectrasyn mPAO150 from the company Exxon - KV100 of approximately 150 mm 2 .s -1 ), a first light PAO (product Spectrasyn 6 from the company Exxon - KV100 of approximately 6 mm 2 .s -1 ) and a second light PAO (Spectrasyn 8 product from the company Exxon - KV100 of approximately 8 mm 2 .s -1 ).
- a heavy PAO product Spectrasyn mPAO150 from the company Exxon - KV100 of approximately 150 mm 2 .s -1
- a first light PAO product Spectrasyn 6 from the company Exxon - KV100 of approximately 6 mm 2 .s -1
- a second light PAO Spectrasyn 8 product from the company Exxon - KV100 of approximately 8 mm 2
- a second composition is prepared according to the invention in which the decyl oleate is replaced by butyl stearate (Stéarinerie Dubois).
- the respective amounts of the various constituents are presented in Table 1 and are expressed in% by mass relative to the mass of the final composition.
- the viscosity index (Viscosity Index in English or VI) is measured according to the standard ASTM D2270.
- composition (1) according to the invention (%)
- Composition (2) according to the invention (%) decyl oleate 30 0 butyl stearate 0 30 Heavy DTP (b) 8 10 Light DTP (c1) (Spectrasyn 6) 30 4 Light DTP (c2) (Spectrasyn 8) 32 56 Viscosity index (VI) 174 176
- Comparative Example 1 Preparation of Comparative Lubricating Compositions
- 3 comparative lubricating compositions are prepared by replacing the decyl oleate respectively with methyl oleate (Stéarinerie Dubois), methyl stearate (Stéarinerie Dubois) and isononanoate of isononyl (Stéarinerie Dubois).
- the respective amounts of the various constituents are presented in Table 2 and are expressed in% by mass relative to the mass of the final composition.
- Example 2 comparison of the tensile coefficient of the compositions according to the invention and of the comparative lubricating compositions
- the lubricating compositions according to the invention have a better coefficient of traction than the comparative lubricating compositions.
- Example 3 comparison of the oxidation resistance properties of the lubricating composition (1) according to the invention and of the comparative lubricating composition (1)
- the properties of resistance to oxidation of the lubricating compositions prepared are evaluated according to standard CEC-L48-A-00 method A and the results obtained are presented in Table 4.
- the greater the variation of KV 100 (R KV 100). the lower the resistance to oxidation.
- PA1 Peak Area Increase
- the lubricating composition according to the invention has an oxidation resistance which is greater than that of the comparative lubricating composition. No deposit of insoluble compounds occurs with the lubricating composition according to the invention.
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Description
L'invention concerne le domaine des compositions lubrifiantes, notamment des compositions lubrifiantes pour véhicules automobiles, en particulier le domaine des compositions lubrifiantes pour transmission, pour boîte de vitesses ou pour pont. La composition lubrifiante selon l'invention comprend au moins 30 % en poids de la composition d'au moins un monoester, au moins une huile polyalphaoléfinique (PAO) dont la viscosité cinématique mesurée à 100 °C va de 40 à 3 000 mm2.s-1 et au moins une huile polyalphaoléfinique (PAO) dont la viscosité cinématique mesurée à 100 °C va de 1,5 à 10 mm2.s-1. L'invention concerne également l'utilisation de cette composition lubrifiante pour réduire la consommation de carburant d'un véhicule équipé d'une transmission, notamment d'un pont ou d'une boîte de vitesses, lubrifiée au moyen de cette composition lubrifiante.The invention relates to the field of lubricating compositions, in particular lubricating compositions for motor vehicles, in particular the field of lubricating compositions for transmission, for gearbox or for axle. The lubricating composition according to the invention comprises at least 30% by weight of the composition of at least one monoester, at least one polyalphaolefinic oil (PAO), the kinematic viscosity of which measured at 100 ° C. ranges from 40 to 3000 mm 2 . s -1 and at least one polyalphaolefinic oil (PAO) whose kinematic viscosity measured at 100 ° C ranges from 1.5 to 10 mm 2 .s -1 . The invention also relates to the use of this lubricating composition for reducing the fuel consumption of a vehicle equipped with a transmission, in particular an axle or a gearbox, lubricated by means of this lubricating composition.
Les huiles pour boîtes de vitesses ou pour pont, et plus généralement les huiles pour engrenages, doivent satisfaire à de nombreuses exigences, notamment liées au confort de conduite (passage de vitesse parfait, marche silencieuse, fonctionnement sans incident, grande fiabilité), à la durée de vie de l'ensemble (réduction de l'usure lors du passage à froid, pas de dépôts et grande stabilité thermique et à l'oxydation, sécurité de lubrification à hautes températures, situation de viscosité stable et absence de perte par cisaillement, longue durée de vie) ainsi qu'à la prise en compte d'aspects environnementaux (consommation de carburant inférieure, réduction de la consommation d'huile, faible dégagement de bruit, évacuation facile).Oils for gearboxes or for axles, and more generally gear oils, must meet many requirements, in particular related to driving comfort (perfect gear change, silent operation, trouble-free operation, high reliability), service life of the assembly (reduction of wear during cold passage, no deposits and high thermal and oxidation stability, safe lubrication at high temperatures, stable viscosity situation and absence of shear loss, long life) as well as the consideration of environmental aspects (lower fuel consumption, reduced oil consumption, low noise emission, easy evacuation).
Il s'agit habituellement des exigences imposées aux huiles pour boîtes de vitesses à commande manuelle et engrenages d'essieux.These are usually the requirements for manually operated transmission and axle gear oils.
Concernant les exigences imposées aux huiles de boîtes automatiques (huiles ATF pour automatic transmission fluids), du fait de leur utilisation, il apparaît pour les huiles ATF des exigences très spécifiques qui sont une grande constance du coefficient de frottement pendant toute la durée du séjour pour un changement de vitesse optimal, une excellente stabilité au vieillissement pour de longs intervalles de vidange, une bonne tenue viscosité-température afin de garantir un parfait fonctionnement avec un moteur chaud et un moteur froid et une compatibilité d'étanchéité suffisante avec différents élastomères utilisés dans les joints de transmissions pour que ceux-ci ne gonflent pas, ne rétrécissent pas et ne se fragilisent pas.Regarding the requirements imposed on automatic gear oils (ATF oils for automatic transmission fluids), due to their use, very specific requirements appear for ATF oils which are a great constancy of the coefficient of friction throughout the duration of the stay for optimum gear change, excellent aging stability for long oil change intervals, good viscosity-temperature resistance to ensure perfect operation with a hot engine and a cold engine and sufficient sealing compatibility with different elastomers used in transmission gaskets so that they do not swell, shrink or weaken.
Par ailleurs, dans le domaine de l'automobile, la recherche de la réduction des émissions de CO2 oblige à développer des produits lubrifiants permettant de réduire le frottement dans les boîtes de vitesses et dans les différentiels de ponts. Cette réduction du frottement dans les boîtes de vitesses et dans les différentiels de ponts doit être obtenue pour différentes conditions de fonctionnement. Ces réductions de frottements doivent concerner les frottements internes au lubrifiant mais également les frottements des éléments constituants les boîtes de vitesses ou les différentiels de ponts, en particulier les éléments métalliques.Moreover, in the automotive field, the search for the reduction of CO 2 emissions makes it necessary to develop lubricant products which make it possible to reduce friction in gearboxes and in axle differentials. This reduction in friction in gearboxes and axle differentials must be achieved for different operating conditions. These friction reductions must relate to the internal friction of the lubricant, but also to the friction of the components of the gearboxes or of the axle differentials, in particular the metal components.
La nature des compositions lubrifiantes pour moteur pour automobiles a une influence sur l'émission de polluants et sur la consommation de carburant. Les compositions lubrifiantes pour moteur pour véhicule permettant des économies d'énergie sont souvent désignées « fuel-eco » (FE), en terminologie anglo-saxonne. De telles huiles « fuel-eco » ont été développées pour satisfaire ces nouveaux besoins. La réduction des pertes d'énergie est donc une recherche constante dans le domaine des compositions lubrifiantes pour véhicule.The nature of the lubricating compositions for motor vehicles has an influence on the emission of pollutants and on the fuel consumption. Lubricating compositions for vehicle engines allowing energy savings are often referred to as “fuel-eco” (FE), in English terminology. Such “fuel-eco” oils have been developed to meet these new needs. Reducing energy losses is therefore a constant search in the field of lubricating compositions for vehicles.
Les compositions lubrifiantes pour véhicule doivent donc posséder des propriétés et des performances améliorées. Il est notamment nécessaire de fournir des compositions lubrifiantes alternatives, en particulier des compositions lubrifiantes possédant un indice de viscosité (VI) élevé ainsi qu'un faible coefficient de traction.Lubricating compositions for vehicles must therefore have improved properties and performance. It is in particular necessary to provide alternative lubricating compositions, in particular lubricating compositions having a high viscosity index (VI) as well as a low coefficient of traction.
Les compositions lubrifiantes recherchées doivent posséder un indice de viscosité élevé afin d'éviter les pertes énergétiques à froid du fait des frottements mais également pour maintenir à chaud un film de lubrifiant suffisant sur les éléments lubrifiés. Un indice de viscosité élevé garantit donc une baisse moindre de la viscosité lorsque la température augmente.The desired lubricating compositions must have a high viscosity index in order to avoid cold energy losses due to friction but also for keep a sufficient film of lubricant hot on the lubricated elements. A high viscosity index therefore guarantees less drop in viscosity when the temperature increases.
Il est également nécessaire de fournir des compositions lubrifiantes alternatives présentant une bonne résistance à l'oxydation.It is also necessary to provide alternative lubricating compositions exhibiting good resistance to oxidation.
Il existe donc un besoin de disposer de compositions lubrifiantes pour transmission de véhicule qui permettent d'apporter une solution à tout ou partie des problèmes des compositions lubrifiantes de l'état de la technique.There is therefore a need to have lubricating compositions for vehicle transmission which make it possible to provide a solution to all or part of the problems of lubricating compositions of the state of the art.
Ainsi, l'invention fournit une composition lubrifiante comprenant
- (a) au moins 30 % en poids de la composition d'au moins un monoester de formule (I)
- ■ R1 représente un groupement hydrocarboné, saturé ou insaturé, linéaire ou ramifié, comprenant de 14 à 24 atomes de carbone ;
- ■ R2 représente un groupement hydrocarboné, saturé ou insaturé, linéaire ou ramifié, comprenant de 2 à 18 atomes de carbone ;
- (b) au moins une huile polyalphaoléfinique (PAO) dont la viscosité cinématique mesurée à 100 °C selon la norme ASTM D445 va de 40 à 3 000 mm2.s-1 ;
- (c) au moins une huile polyalphaoléfinique (PAO) dont la viscosité cinématique mesurée à 100 °C selon la norme ASTM D445 va de 1,5 à 10 mm2.s-1.
- (a) at least 30% by weight of the composition of at least one monoester of formula (I)
- ■ R 1 represents a hydrocarbon group, saturated or unsaturated, linear or branched, comprising from 14 to 24 carbon atoms;
- ■ R 2 represents a hydrocarbon group, saturated or unsaturated, linear or branched, comprising from 2 to 18 carbon atoms;
- (b) at least one polyalphaolefinic oil (PAO), the kinematic viscosity of which, measured at 100 ° C. according to the ASTM D445 standard, ranges from 40 to 3000 mm 2 .s -1 ;
- (c) at least one polyalphaolefinic oil (PAO), the kinematic viscosity of which, measured at 100 ° C. according to the ASTM D445 standard, ranges from 1.5 to 10 mm 2 .s -1 .
La composition selon l'invention comprend au moins un monoester (a), au moins huile polyalphaoléfinique (b) et au moins une huile polyalphaoléfinique (c). Elle peut ne comprendre qu'un seul monoester (a), qu'une seule huile polyalphaoléfinique (b) et qu'une seule huile polyalphaoléfinique (c). Elle peut également comprendre un, deux ou trois monoesters (a) mais également une, deux ou trois huiles polyalphaoléfiniques (b) ou encore une deux ou trois huiles polyalphaoléfiniques (c).The composition according to the invention comprises at least one monoester (a), at least polyalphaolefinic oil (b) and at least one polyalphaolefinic oil (c). It may comprise only one monoester (a), only one polyalphaolefinic oil (b) and only one single polyalphaolefinic oil (c). It can also comprise one, two or three monoesters (a) but also one, two or three polyalphaolefinic oils (b) or even one two or three polyalphaolefinic oils (c).
Le monoester (a) présent au sein de la composition lubrifiante selon l'invention est un monoester de formule (I). De manière préférée pour le monoester (a) de formule (I) selon l'invention, R1 représente un groupement hydrocarboné, saturé ou insaturé, linéaire ou ramifié, comprenant de 14 à 20 atomes de carbone, préférentiellement de 14 à 18 atomes de carbone, plus préférentiellement de 16 à 18 atomes de carbone. De manière également préférée pour le monoester (a) de formule (I) selon l'invention, R2 représente un groupement hydrocarboné, saturé ou insaturé, linéaire ou ramifié, comprenant de 3 à 14 atomes de carbone, préférentiellement de 4 à 12 atomes de carbone, plus préférentiellement de 4 à 10 atomes de carbone.The monoester (a) present in the lubricating composition according to the invention is a monoester of formula (I). Preferably for the monoester (a) of formula (I) according to the invention, R 1 represents a hydrocarbon group, saturated or unsaturated, linear or branched, comprising from 14 to 20 carbon atoms, preferably from 14 to 18 carbon atoms, more preferably from 16 to 18 carbon atoms. Also preferably for the monoester (a) of formula (I) according to the invention, R 2 represents a hydrocarbon group, saturated or unsaturated, linear or branched, comprising from 3 to 14 carbon atoms, preferably from 4 to 12 atoms. of carbon, more preferably from 4 to 10 carbon atoms.
De manière avantageuse, le monoester (a) présent au sein de la composition lubrifiante selon l'invention est un monoester de formule (I) dans laquelle
- ■ R1 est un groupement linéaire et R2 est un groupement ramifié ; ou
- ■ R1 est un groupement ramifié et R2 est un groupement linéaire ; ou
- ■ R1 et R2 sont des groupements linéaires ; ou
- ■ R1 et R2 sont des groupements ramifiés.
- ■ R 1 is a linear group and R 2 is a branched group; Where
- ■ R 1 is a branched group and R 2 is a linear group; Where
- ■ R 1 and R 2 are linear groups; Where
- ■ R 1 and R 2 are branched groups.
De manière préférée, le monoester (a) présent au sein de la composition lubrifiante selon l'invention est un monoester de formule (I) dans laquelle R1 et R2 sont des groupements linéaires.Preferably, the monoester (a) present in the lubricating composition according to the invention is a monoester of formula (I) in which R 1 and R 2 are linear groups.
De manière particulièrement préférée, le monoester (a) présent au sein de la composition lubrifiante selon l'invention est un monoester de formule (I) dans laquelle R1 et R2 représentent indépendamment un groupement choisi parmi
- ■ un groupement saturé linéaire ;
- ■ un groupement saturé ramifié comprenant de 1 à 5 chaines de ramification ;
- ■ un groupement saturé ramifié dont les chaines de ramification comprennent de 1 à 5 atomes de carbone ;
- ■ un groupement saturé ramifié comprenant de 1 à 5 chaines de ramification et dont les chaines de ramification comprennent de 1 à 5 atomes de carbone.
- ■ a linear saturated group;
- ■ a branched saturated group comprising from 1 to 5 branching chains;
- ■ a branched saturated group whose branching chains comprise from 1 to 5 carbon atoms;
- ■ a branched saturated group comprising from 1 to 5 branching chains and whose branching chains comprise from 1 to 5 carbon atoms.
De manière également préférée, le monoester (a) présent au sein de la composition lubrifiante selon l'invention est un monoester de formule (I) dans laquelle R1 et R2 sont choisis parmi
- ■ un groupement saturé linéaire ;
- ■ un groupement saturé ramifié comprenant de 1 à 5 chaines de ramification ;
- ■ un groupement saturé ramifié dont les chaines de ramification comprennent de 1 à 5 atomes de carbone ;
- ■ un groupement saturé ramifié comprenant de 1 à 5 chaines de ramification et dont les chaines de ramification comprennent de 1 à 5 atomes de carbone.
- ■ a linear saturated group;
- ■ a branched saturated group comprising from 1 to 5 branching chains;
- ■ a branched saturated group whose branching chains comprise from 1 to 5 carbon atoms;
- ■ a branched saturated group comprising from 1 to 5 branching chains and whose branching chains comprise from 1 to 5 carbon atoms.
De manière également préférée, seul R1 ou seul R2 est choisi parmi l'un ou l'autre de ces groupements.Also preferably, only R 1 or only R 2 is chosen from one or the other of these groups.
De manière préférée, le monoester (a) est de formule (I) dans laquelle
- ■ R1 est un groupement saturé et R2 est un groupement insaturé ; ou
- ■ R1 est un groupement insaturé et R2 est un groupement saturé ; ou
- ■ R1 et R2 sont des groupements saturés ; ou
- ■ R1 et R2 sont des groupements insaturés.
- ■ R 1 is a saturated group and R 2 is an unsaturated group; Where
- ■ R 1 is an unsaturated group and R 2 is a saturated group; Where
- ■ R 1 and R 2 are saturated groups; Where
- ■ R 1 and R 2 are unsaturated groups.
Un monoester (a) de formule (I) dans laquelle R1 est un groupement saturé et R2 est un groupement saturé est particulièrement préféré. Un monoester (a) de formule (I) dans laquelle R1 est un groupement insaturé et R2 est un groupement saturé est plus particulièrement préféré.A monoester (a) of formula (I) in which R 1 is a saturated group and R 2 is a saturated group is particularly preferred. A monoester (a) of formula (I) in which R 1 is an unsaturated group and R 2 is a saturated group is more particularly preferred.
Le monoester (a) de formule (I) selon l'invention peut être choisi parmi de nombreux monoesters. De manière préférée, il est choisi parmi les stéarates, de préférence les stéarates d'alkyle et les stéarates d'alcényle, plus préférentiellement les stéarates de C4-C10-alkyle, en particulier le stéarate de butyle, le stéarate de pentyle, le stéarate d'hexyle, le stéarate d'heptyle, le stéarate d'octyle, le stéarate de nonyle, le stéarate de décyle. De manière également préférée, il est choisi parmi les oléates, de préférence les oléates d'alkyle et les oléates d'alcényle, plus préférentiellement les oléates de C4-C10-alkyle, en particulier l'oléate de butyle, l'oléate de pentyle, l'oléate d'hexyle, l'oléate d'heptyle, l'oléate d'octyle, l'oléate de nonyle, l'oléate de décyle.The monoester (a) of formula (I) according to the invention can be chosen from numerous monoesters. Preferably, it is chosen from stearates, preferably alkyl stearates and alkenyl stearates, more preferably C 4 -C 10 -alkyl stearates, in particular butyl stearate, pentyl stearate, hexyl stearate, heptyl stearate, octyl stearate, nonyl stearate, decyl stearate. Also preferably, it is chosen from oleates, preferably alkyl oleates and alkenyl oleates, more preferably C 4 -C 10 -alkyl oleates, in particular butyl oleate, oleate. pentyl, hexyl oleate, heptyl oleate, octyl oleate, nonyl oleate, decyl oleate.
Comme autres monoesters pouvant convenir selon l'invention, on peut citer les linoléates, de préférence les linoléates d'alkyle et les linoléates d'alcényle, plus préférentiellement les linoléates de C4-C10-alkyle, en particulier le linoléate de butyle, le linoléate de pentyle, le linoléate d'hexyle, le linoléate d'heptyle, le linoléate d'octyle, le linoléate de nonyle, le linoléate de décyle. On peut également citer les palmitoléates ; les palmitates ; les linolénates ; les eicosénoates ; les esters d'acide érucique ; les esters d'acide nervonique. Le monoester (a) de formule (I) selon l'invention peut également être choisi parmi les monoesters alcéniques et les monoesters alkyliques, de préférence les monoesters C2-C10-alkyliques, en particulier les monoesters éthyliques, les monoesters propyliques, les monoesters butyliques, les monoesters pentyliques, les monoesters hexyliques, les monoesters heptyliques, les monoesters octyliques, les monoesters nonyliques, les monoesters décyliques.As other monoesters which may be suitable according to the invention, mention may be made of linoleates, preferably alkyl linoleates and alkenyl linoleates, more preferably C 4 -C 10 -alkyl linoleates, in particular butyl linoleate, pentyl linoleate, hexyl linoleate, heptyl linoleate, octyl linoleate, nonyl linoleate, decyl linoleate. Mention may also be made of palmitoleates; palmitates; linolenates; eicosenoates; esters of erucic acid; nervonic acid esters. The monoester (a) of formula (I) according to the invention can also be chosen from alkenic monoesters and alkyl monoesters, preferably C 2 -C 10 -alkyl monoesters, in particular ethyl monoesters, propyl monoesters, butyl monoesters, pentyl monoesters, hexyl monoesters, heptyl monoesters, octyl monoesters, nonyl monoesters, decyl monoesters.
De manière avantageuse, la composition lubrifiante selon l'invention comprend de 30 à 70 % en poids de la composition de monoester de formule (I). De manière également avantageuse, la composition lubrifiante selon l'invention comprend de 30 à 60 % en poids de la composition ou de 30 à 50 % en poids de la composition de monoester de formule (I).Advantageously, the lubricating composition according to the invention comprises from 30 to 70% by weight of the monoester composition of formula (I). Also advantageously, the lubricating composition according to the invention comprises from 30 to 60% by weight of the composition or from 30 to 50% by weight of the monoester composition of formula (I).
Outre le monoester (a), la composition lubrifiante selon l'invention comprend aux moins deux huiles polyalphaoléfiniques (b) et (c). Il s'agit de PAO hydrogénées. L'huile polyalphaoléfinique (b) est une PAO lourde. Elle possède une viscosité cinématique mesurée à 100 °C selon la norme ASTM D445 allant de 40 à 3000 mm2.s-1. L'huile polyalphaoléfinique (c) est une PAO légère. Elle possède une viscosité cinématique mesurée à 100 °C selon la norme ASTM D445 allant de 1,5 à 10 mm2.s-1.Besides the monoester (a), the lubricating composition according to the invention comprises at least two polyalphaolefinic oils (b) and (c). These are hydrogenated PAOs. Polyalphaolefinic oil (b) is a heavy PAO. It has a kinematic viscosity measured at 100 ° C. according to the ASTM D445 standard ranging from 40 to 3000 mm 2 .s -1 . Polyalphaolefinic oil (c) is a light PAO. It has a kinematic viscosity measured at 100 ° C. according to the ASTM D445 standard ranging from 1.5 to 10 mm 2 .s -1 .
De manière préférée, la viscosité cinématique de l'huile polyalphaoléfinique (b), mesurée à 100 °C selon la norme ASTM D445, va de 40 à 1 500 mm2.s-1. De manière plus préférée, la viscosité cinématique de l'huile polyalphaoléfinique (b), mesurée à 100°C selon la norme ASTM D445, va de 40 à 300 mm2.s-1.Preferably, the kinematic viscosity of the polyalphaolefinic oil (b), measured at 100 ° C. according to the ASTM D445 standard, ranges from 40 to 1500 mm 2 .s -1 . More preferably, the kinematic viscosity of the polyalphaolefinic oil (b), measured at 100 ° C. according to the ASTM D445 standard, ranges from 40 to 300 mm 2 .s -1 .
De manière également préférée, la masse moléculaire moyenne en poids de l'huile polyalphaoléfinique (b) est supérieure à 2 500 Da ou va de 2 500 à 80 000 Da. De manière plus préférée, la masse moléculaire moyenne en poids de l'huile polyalphaoléfinique (b) va de 4 000 à 50 000 Da.Also preferably, the weight average molecular mass of the polyalphaolefinic oil (b) is greater than 2,500 Da or ranges from 2,500 to 80,000 Da. More preferably, the weight average molecular mass of the polyalphaolefinic oil (b) ranges from 4000 to 50,000 Da.
De manière particulièrement préférée, l'huile polyalphaoléfinique (b) possède une viscosité cinématique, mesurée à 100 °C selon la norme ASTM D445, allant de 40 à 1 500 mm2.s-1 et une masse moléculaire moyenne en poids allant de 2 500 à 80 000 Da ou de 4 000 à 50 000 Da. De manière plus particulièrement préférée, l'huile polyalphaoléfinique (b) possède une viscosité cinématique, mesurée à 100 °C selon la norme ASTM D445, allant de 40 à 300 mm2.s-1 et une masse moléculaire moyenne en poids allant de 2 500 à 80 000 Da ou de 4 000 à 50 000 Da.Particularly preferably, the polyalphaolefinic oil (b) has a kinematic viscosity, measured at 100 ° C according to the ASTM D445 standard, ranging from 40 to 1500 mm 2 .s -1 and a weight average molecular mass ranging from 2 500 to 80,000 Da or 4,000 to 50,000 Da. More particularly preferably, the polyalphaolefinic oil (b) has a kinematic viscosity, measured at 100 ° C according to the ASTM D445 standard, ranging from 40 to 300 mm 2 .s -1 and a weight average molecular mass ranging from 2 500 to 80,000 Da or 4,000 to 50,000 Da.
De manière préférée, la viscosité cinématique de l'huile polyalphaoléfinique (c), mesurée à 100 °C selon la norme ASTM D445, va de 1,5 à 10 mm2.s-1 ou de 2 à 10 mm2.s-1. De manière plus préférée, la viscosité cinématique de l'huile polyalphaoléfinique (c), mesurée à 100 °C selon la norme ASTM D445, va de 1,5 à 8 mm2.s-1 ou de 2 à 8 mm2.s-1.Preferably, the kinematic viscosity of the polyalphaolefinic oil (c), measured at 100 ° C according to the ASTM D445 standard, ranges from 1.5 to 10 mm 2 .s -1 or from 2 to 10 mm 2 .s - 1 . More preferably, the kinematic viscosity of the polyalphaolefinic oil (c), measured at 100 ° C according to the ASTM D445 standard, ranges from 1.5 to 8 mm 2 .s -1 or from 2 to 8 mm 2 .s -1 .
De manière également préférée, la masse moléculaire moyenne en poids de l'huile polyalphaoléfinique (c) est inférieure à 500 Da ou va de 50 à 500 Da. De manière plus préférée, la masse moléculaire moyenne en poids de l'huile polyalphaoléfinique (c) va de 50 à 350 Da ou de 50 à 300 Da.Also preferably, the weight average molecular mass of the polyalphaolefinic oil (c) is less than 500 Da or ranges from 50 to 500 Da. More preferably, the weight average molecular mass of the polyalphaolefinic oil (c) ranges from 50 to 350 Da or from 50 to 300 Da.
De manière particulièrement préférée, l'huile polyalphaoléfinique (c) possède une viscosité cinématique, mesurée à 100°C selon la norme ASTM D445, allant de 1,5 à 8 mm2.s-1 et une masse moléculaire moyenne en poids allant de 50 à 500 Da ou de 50 à 350 Da ou de 50 à 300 Da ou bien une viscosité cinématique, mesurée à 100 °C selon la norme ASTM D445, allant de 2 à 8 mm2.s-1 et une masse moléculaire moyenne en poids allant de 50 à 500 Da ou de 50 à 350 Da ou de 50 à 300 Da.Particularly preferably, the polyalphaolefinic oil (c) has a kinematic viscosity, measured at 100 ° C according to the ASTM D445 standard, ranging from 1.5 to 8 mm 2 .s -1 and a weight average molecular mass ranging from 50 to 500 Da or from 50 to 350 Da or from 50 to 300 Da or else a kinematic viscosity, measured at 100 ° C according to the ASTM D445 standard, ranging from 2 to 8 mm 2 .s -1 and an average molecular mass in weight ranging from 50 to 500 Da or from 50 to 350 Da or from 50 to 300 Da.
De manière plus particulièrement préférée, l'huile polyalphaoléfinique (c) possède une viscosité cinématique, mesurée à 100°C selon la norme ASTM D445, allant de 1,5 à 6 mm2.s-1 et une masse moléculaire moyenne en poids allant de 50 à 500 Da ou de 50 à 350 Da ou de 50 à 300 Da ou bien une viscosité cinématique, mesurée à 100 °C selon la norme ASTM D445, allant de 2 à 6 mm2.s-1 et une masse moléculaire moyenne en poids allant de 50 à 500 Da ou de 50 à 350 Da ou de 50 à 300 Da.More particularly preferably, the polyalphaolefinic oil (c) has a kinematic viscosity, measured at 100 ° C according to the ASTM D445 standard, ranging from 1.5 to 6 mm 2 .s -1 and a weight average molecular mass ranging from from 50 to 500 Da or from 50 to 350 Da or from 50 to 300 Da or else a kinematic viscosity, measured at 100 ° C according to the ASTM D445 standard, ranging from 2 to 6 mm 2 .s -1 and an average molecular mass by weight ranging from 50 to 500 Da or from 50 to 350 Da or from 50 to 300 Da.
Comme huile polyalphaoléfinique (c) particulière selon l'invention, on peut également citer une huile de viscosité cinématique à 100 °C, mesurée selon la norme ASTM D445, allant de 3 à 4 mm2.s-1, comprenant plus de 50 % en poids de 9-methyl-11-octyl-henicosane, trimère de 1-décène.As particular polyalphaolefinic oil (c) according to the invention, mention may also be made of an oil of kinematic viscosity at 100 ° C., measured according to the ASTM D445 standard, ranging from 3 to 4 mm 2 .s -1 , comprising more than 50%. by weight of 9-methyl-11-octyl-henicosane, 1-decene trimer.
Les proportions respectives d'huiles polyalphaoléfiniques (b) et (c) au sein de la composition lubrifiante selon l'invention peuvent varier. De manière préférée, la composition lubrifiante selon l'invention comprend de 5 à 30 %, de préférence de 5 à 25 %, en poids de la composition d'huile polyalphaoléfinique (b). De manière également préférée, la composition lubrifiante selon l'invention comprend de 5 à 70 %, de préférence de 30 à 70 %, en poids de la composition d'huile polyalphaoléfinique (c). Les proportions respectives d'huiles polyalphaoléfiniques (b) et (c) au sein de la composition lubrifiante selon l'invention peuvent également varier selon l'application visée pour la composition lubrifiante selon l'invention. Ainsi, pour une utilisation comme lubrifiant pour boîte de vitesses, la composition lubrifiante selon l'invention peut comprendre de 1 à 40 % en poids de la composition d'huile polyalphaoléfinique (b) et de 30 à 69 %, en poids de la composition d'huile polyalphaoléfinique (c).The respective proportions of polyalphaolefinic oils (b) and (c) in the lubricating composition according to the invention can vary. Preferably, the lubricating composition according to the invention comprises from 5 to 30%, preferably from 5 to 25%, by weight of the polyalphaolefinic oil composition (b). Also preferably, the lubricating composition according to the invention comprises from 5 to 70%, preferably from 30 to 70%, by weight of the polyalphaolefinic oil composition (c). The respective proportions of polyalphaolefinic oils (b) and (c) within the lubricating composition according to the invention can also vary according to the intended application for the lubricating composition according to the invention. Thus, for use as a lubricant for a gearbox, the lubricating composition according to the invention may comprise from 1 to 40% by weight of the polyalphaolefinic oil composition (b) and from 30 to 69% by weight of the composition. polyalphaolefinic oil (c).
De manière générale, outre le monoester (a) et huiles polyalphaoléfiniques (b) et (c), la composition lubrifiante selon l'invention peut comprendre d'autres huiles ainsi que des additifs. La composition lubrifiante selon l'invention peut comprendre tout type d'huile de base lubrifiante minérale, synthétique ou naturelle, animale ou végétale, adaptées à son utilisation.In general, in addition to the monoester (a) and polyalphaolefinic oils (b) and (c), the lubricating composition according to the invention can comprise other oils as well as additives. The lubricating composition according to the invention can comprise any type of mineral, synthetic or natural, animal or vegetable lubricating base oil, suitable for its use.
Les huiles de base utilisées dans les compositions lubrifiantes selon l'invention peuvent être des huiles d'origines minérales ou synthétiques appartenant aux groupes I à V selon les classes définies dans la classification APl (ou leurs équivalents selon la classification ATIEL) (tableau A) ou leurs mélanges.
Les huiles de base minérales utiles selon l'invention incluent tous types de bases obtenues par distillation atmosphérique et sous vide du pétrole brut, suivies d'opérations de raffinage telles qu'extraction au solvant, désalphatage, déparaffinage au solvant, hydrotraitement, hydrocraquage, hydroisomérisation et hydrofinition. Des mélanges d'huiles synthétiques et minérales peuvent également être employés.The mineral base oils useful according to the invention include all types of bases obtained by atmospheric and vacuum distillation of crude oil, followed by refining operations such as solvent extraction, dealphating, solvent dewaxing, hydrotreatment, hydrocracking, hydroisomerization. and hydrofinishing. Mixtures of synthetic and mineral oils can also be used.
Il n'existe généralement aucune limitation quant à l'emploi de bases lubrifiantes différentes pour réaliser les compositions lubrifiantes selon l'invention, si ce n'est qu'elles doivent avoir des propriétés, notamment de viscosité, indice de viscosité, teneur en soufre, résistance à l'oxydation, adaptées à une utilisation pour des moteurs ou pour des transmissions de véhicule.There is generally no limitation as to the use of different lubricating bases to produce the lubricating compositions according to the invention, except that they must have properties, in particular of viscosity, viscosity index, sulfur content. , oxidation resistance, suitable for use in engines or for vehicle transmissions.
Les huiles de base des compositions lubrifiantes selon l'invention peuvent également être choisies parmi les huiles synthétiques, tels certains esters d'acides carboxyliques et d'alcools, ainsi que parmi les polyalphaoléfines. Les autres polyalphaoléfines utilisées comme huiles de base sont par exemple obtenues à partir de monomères comprenant de 4 à 32 atomes de carbone, par exemple à partir d'octène ou de décène, et dont la viscosité à 100 °C est comprise entre 1,5 et 15 mm2.s-1 selon la norme ASTM D445. Leur masse moléculaire moyenne en poids est généralement comprise entre 250 et 3 000 Da selon la norme ASTM D5296.The base oils of the lubricating compositions according to the invention can also be chosen from synthetic oils, such as certain esters of carboxylic acids and alcohols, as well as from polyalphaolefins. The other polyalphaolefins used as base oils are for example obtained from monomers comprising from 4 to 32 carbon atoms, for example from octene or decene, and whose viscosity at 100 ° C is between 1.5 and 15 mm 2 .s -1 according to the ASTM D445 standard. Their weight average molecular mass is generally between 250 and 3000 Da according to the ASTM D5296 standard.
De manière avantageuse, la composition lubrifiante selon l'invention comprend au moins 50 % en masse d'huiles de base par rapport à la masse totale de la composition. De manière plus avantageuse, la composition lubrifiante selon l'invention comprend au moins 60 % en masse, voire au moins 70 % en masse, d'huiles de base par rapport à la masse totale de la composition. De manière également avantageuse, la composition lubrifiante selon l'invention comprend de 75 à 99,9 % en masse d'huiles de base par rapport à la masse totale de la composition.Advantageously, the lubricating composition according to the invention comprises at least 50% by mass of base oils relative to the total mass of the composition. More advantageously, the lubricating composition according to the invention comprises at least 60% by mass, or even at least 70% by mass, of base oils relative to the total mass of the composition. Also advantageously, the lubricating composition according to the invention comprises from 75 to 99.9% by mass of base oils relative to the total mass of the composition.
De nombreux additifs peuvent être utilisés pour la composition lubrifiante selon l'invention. Les additifs préférés pour la composition lubrifiante selon l'invention sont choisis parmi les additifs détergents, les additifs anti-usure, les additifs modificateurs de frottement, les additifs extrême pression, les dispersants, les améliorants du point d'écoulement, les agents anti-mousse, les épaississants et leurs mélanges.Numerous additives can be used for the lubricating composition according to the invention. The preferred additives for the lubricating composition according to the invention are chosen from detergent additives, anti-wear additives, friction modifying additives, extreme pressure additives, dispersants, pour point improvers, anti- mousse, thickeners and mixtures thereof.
De manière préférée, la composition lubrifiante selon l'invention comprend au moins un additif améliorant du point d'écoulement ou agent PPD (pour point depressant ou agent de réduction du point d'écoulement). En ralentissant la formation de cristaux de paraffine, les agents de réduction du point d'écoulement améliorent généralement le comportement à froid de la composition lubrifiante selon l'invention. Comme exemples d'agents de réduction du point d'écoulement, on peut citer les polyméthacrylates d'alkyle, les polyacrylates, les polyarylamides, les polyalkylphénols, les polyalkylnaphtalènes, les polystyrènes alkylés.Preferably, the lubricating composition according to the invention comprises at least one pour point improving additive or PPD agent (for depressant point or pour point reducing agent). By slowing the formation of paraffin crystals, pour point reducing agents generally improve the cold behavior of the lubricating composition according to the invention. As examples of pour point reducing agents, mention may be made of polymethacrylates of alkyl, polyacrylates, polyarylamides, polyalkylphenols, polyalkylnaphthalenes, alkylated polystyrenes.
La composition lubrifiante selon l'invention peut également comprendre au moins un additif anti-usure, au moins un additif extrême pression ou leurs mélanges.The lubricating composition according to the invention can also comprise at least one anti-wear additive, at least one extreme pressure additive or their mixtures.
Les additifs anti-usure et les additifs extrême pression protègent les surfaces en frottement par formation d'un film protecteur adsorbé sur ces surfaces. Il existe une grande variété d'additifs anti-usure. De manière préférée pour la composition lubrifiante selon l'invention, les additifs anti-usure sont choisis parmi des additifs phospho-soufrés comme les alkylthiophosphates métalliques, en particulier les alkylthiophosphates de zinc, et plus spécifiquement les dialkyldithiophosphates de zinc ou ZnDTP. Les composés préférés sont de formule Zn((SP(S)(OR3)(OR4))2, dans laquelle R3 et R4, identiques ou différents, représentent indépendamment un groupement alkyle, préférentiellement un groupement alkyle comportant de 1 à 18 atomes de carbone. Les phosphates d'amines sont également des additifs anti-usure qui peuvent être employés dans la composition lubrifiante selon l'invention. Toutefois, le phosphore apporté par ces additifs peut agir comme poison des systèmes catalytiques des automobiles car ces additifs sont générateurs de cendres. On peut minimiser ces effets en substituant partiellement les phosphates d'amines par des additifs n'apportant pas de phosphore, tels que, par exemple, les polysulfures, notamment les oléfines soufrées. De manière avantageuse, la composition lubrifiante selon l'invention peut comprendre de 0,01 à 6 % en masse, préférentiellement de 0,05 à 4 % en masse, plus préférentiellement de 0,1 à 2 % en masse par rapport à la masse totale de composition lubrifiante, d'additifs anti-usure et d'additifs extrême-pression.Antiwear additives and extreme pressure additives protect rubbing surfaces by forming a protective film adsorbed on these surfaces. There is a wide variety of antiwear additives. Preferably for the lubricating composition according to the invention, the anti-wear additives are chosen from phospho-sulfur additives such as metal alkylthiophosphates, in particular zinc alkylthiophosphates, and more specifically zinc dialkyldithiophosphates or ZnDTP. The compounds preferred are of formula Zn ((SP (S) (OR 3 ) (OR 4 )) 2 , in which R 3 and R 4 , identical or different, independently represent an alkyl group, preferably an alkyl group comprising from 1 to 18 atoms of carbon. Amine phosphates are also anti-wear additives which can be used in the lubricating composition according to the invention. However, the phosphorus provided by these additives can act as a poison in the catalytic systems of automobiles because these additives generate These effects can be minimized by partially substituting the amine phosphates with additives which do not provide phosphorus, such as, for example, polysulfides, in particular sulfur-containing olefins. invention may comprise from 0.01 to 6% by mass, preferably from 0.05 to 4% by mass, more preferably from 0.1 to 2% by mass relative to the total mass of lubricating composition, of ad anti-wear and extreme pressure additives.
De manière avantageuse, la composition lubrifiante selon l'invention peut comprendre au moins un additif modificateur de frottement. L'additif modificateur de frottement peut être choisi parmi un composé apportant des éléments métalliques et un composé exempt de cendres. Parmi les composés apportant des éléments métalliques, on peut citer les complexes de métaux de transition tels que Mo, Sb, Sn, Fe, Cu, Zn dont les ligands peuvent être des composés hydrocarbonés comprenant des atomes d'oxygène, d'azote, de soufre ou de phosphore. Les additifs modificateurs de frottement exempt de cendres sont généralement d'origine organique et peuvent être choisis parmi les monoesters d'acides gras et de polyols, les amines alcoxylées, les amines grasses alcoxylées, les époxydes gras, les époxydes gras de borate ; les amines grasses ou les esters de glycérol d'acide gras. Selon l'invention, les composés gras comprennent au moins un groupement hydrocarboné comprenant de 10 à 24 atomes de carbone. De manière avantageuse, la composition lubrifiante selon l'invention peut comprendre de 0,01 à 2 % en masse ou de 0,01 à 5 % en masse, préférentiellement de 0,1 à 1,5 % en masse ou de 0,1 à 2 % en masse par rapport à la masse totale de la composition lubrifiante, d'additif modificateur de frottement.Advantageously, the lubricating composition according to the invention can comprise at least one friction modifying additive. The friction modifier additive can be chosen from a compound providing metallic elements and an ash-free compound. Among the compounds providing metallic elements, mention may be made of transition metal complexes such as Mo, Sb, Sn, Fe, Cu, Zn, the ligands of which may be hydrocarbon compounds comprising oxygen, nitrogen or carbon atoms. sulfur or phosphorus. The ash-free friction modifying additives are generally of organic origin and can be chosen from fatty acid monoesters and polyols, alkoxylated amines, alkoxylated fatty amines, fatty epoxides, borate fatty epoxides; fatty amines or fatty acid glycerol esters. According to the invention, the fatty compounds comprise at least one hydrocarbon group comprising from 10 to 24 carbon atoms. Advantageously, the lubricating composition according to the invention can comprise from 0.01 to 2% by mass or from 0.01 to 5% by mass, preferably from 0.1 to 1.5% by mass or from 0.1 at 2% by mass relative to the total mass of the lubricating composition, of friction modifier additive.
De manière avantageuse, la composition lubrifiante selon l'invention peut comprendre au moins un additif antioxydant. L'additif antioxydant permet généralement de retarder la dégradation de la composition lubrifiante en service. Cette dégradation peut notamment se traduire par la formation de dépôts, par la présence de boues ou par une augmentation de la viscosité de la composition lubrifiante. Les additifs antioxydants agissent notamment comme inhibiteurs radicalaires ou destructeurs d'hydropéroxydes. Parmi les additifs antioxydants couramment employés, on peut citer les additifs antioxydants de type phénolique, les additifs antioxydants de type aminé, les additifs antioxydants phosphosoufrés. Certains de ces additifs antioxydants, par exemple les additifs antioxydants phosphosoufrés, peuvent être générateurs de cendres. Les additifs antioxydants phénoliques peuvent être exempt de cendres ou bien être sous forme de sels métalliques neutres ou basiques. Les additifs antioxydants peuvent notamment être choisis parmi les phénols stériquement encombrés, les esters de phénol stériquement encombrés et les phénols stériquement encombrés comprenant un pont thioéther, les diphénylamines, les diphénylamines substituées par au moins un groupement alkyle en C1-C12, les N,N'-dialkyle-aryle-diamines et leurs mélanges. De préférence selon l'invention, les phénols stériquement encombrés sont choisis parmi les composés comprenant un groupement phénol dont au moins un carbone vicinal du carbone portant la fonction alcool est substitué par au moins un groupement alkyle en C1- C10, de préférence un groupement alkyle en C1-C6, de préférence un groupement alkyle en C4, de préférence par le groupement ter-butyle. Les composés aminés sont une autre classe d'additifs antioxydants pouvant être utilisés, éventuellement en combinaison avec les additifs antioxydants phénoliques. Des exemples de composés aminés sont les amines aromatiques, par exemple les amines aromatiques de formule NR5R6R7 dans laquelle R5 représente un groupement aliphatique ou un groupement aromatique, éventuellement substitué, R6 représente un groupement aromatique, éventuellement substitué, R7 représente un atome d'hydrogène, un groupement alkyle, un groupement aryle ou un groupement de formule R8S(O)zR9 dans laquelle R8 représente un groupement alkylène ou un groupement alkenylène, R9 représente un groupement alkyle, un groupement alcényle ou un groupement aryle et z représente 0, 1 ou 2. Des alkyl phénols sulfurisés ou leurs sels de métaux alcalins et alcalino-terreux peuvent également être utilisés comme additifs antioxydants. Une autre classe d'additifs antioxydants est celle des composés cuivrés, par exemples les thio- ou dithio-phosphates de cuivre, les sels de cuivre et d'acides carboxyliques, les dithiocarbamates, les sulfonates, les phénates, les acétylacétonates de cuivre. Les sels de cuivre I et II, les sels d'acide ou d'anhydride succiniques peuvent également être utilisés. La composition lubrifiante selon l'invention peut contenir tous types d'additifs antioxydants connus de l'homme du métier. De manière avantageuse, la composition lubrifiante comprend au moins un additif antioxydant exempt de cendres. De manière également avantageuse, la composition lubrifiante selon l'invention comprend de 0,5 à 2 % en poids par rapport à la masse totale de la composition, d'au moins un additif antioxydant.Advantageously, the lubricating composition according to the invention can comprise at least one antioxidant additive. The antioxidant additive generally makes it possible to delay the degradation of the lubricating composition in service. This degradation can be reflected in particular by the formation of deposits, by the presence of sludge or by an increase in the viscosity of the lubricating composition. Antioxidant additives act in particular as radical inhibitors or destroyers of hydroperoxides. Among the antioxidant additives commonly used, there may be mentioned antioxidant additives of phenolic type, antioxidant additives of amine type, phosphosulfurized antioxidant additives. Some of these antioxidant additives, for example phosphosulfurized antioxidant additives, can generate ash. The phenolic antioxidant additives can be ash free or in the form of neutral or basic metal salts. The antioxidant additives can in particular be chosen from sterically hindered phenols, sterically hindered phenol esters and sterically hindered phenols comprising a thioether bridge, diphenylamines, diphenylamines substituted with at least one C 1 -C 12 alkyl group, N , N'-dialkyl-aryl-diamines and mixtures thereof. Preferably according to the invention, the sterically hindered phenols are chosen from compounds comprising a phenol group of which at least one carbon vicinal of the carbon carrying the alcohol function is substituted by at least one C 1 - C 10 alkyl group, preferably one. C 1 -C 6 alkyl group, preferably a C 4 alkyl group, preferably through the tert-butyl group. Amino compounds are another class of antioxidant additives that can be used, optionally in combination with phenolic antioxidant additives. Examples of amino compounds are aromatic amines, for example aromatic amines of formula NR 5 R 6 R 7 in which R 5 represents an aliphatic group or an aromatic group, optionally substituted, R 6 represents an aromatic group, optionally substituted, R 7 represents a hydrogen atom, an alkyl group, an aryl group or a group of formula R 8 S (O) z R 9 in which R 8 represents an alkylene group or an alkenylene group, R 9 represents an alkyl group, a alkenyl group or an aryl group and z represents 0, 1 or 2. Sulfurized alkyl phenols or their alkali and alkaline earth metal salts can also be used as antioxidant additives. Another class of antioxidant additives is that of copper compounds, for example copper thio- or dithio-phosphates, copper and carboxylic acid salts, dithiocarbamates, sulfonates, phenates, copper acetylacetonates. Copper I and II salts, salts of succinic acid or anhydride can also be used. The lubricating composition according to the invention can contain all types of antioxidant additives known to those skilled in the art. Advantageously, the lubricating composition comprises at least one antioxidant additive free of ash. Also advantageously, the lubricating composition according to the invention comprises from 0.5 to 2% by weight, relative to the total weight of the composition, of at least one antioxidant additive.
La composition lubrifiante selon l'invention peut également comprendre au moins un additif détergent. Les additifs détergents permettent généralement de réduire la formation de dépôts à la surface des pièces métalliques par dissolution des produits secondaires d'oxydation et de combustion. Les additifs détergents utilisables dans la composition lubrifiante selon l'invention sont généralement connus de l'homme de métier. Les additifs détergents peuvent être des composés anioniques comprenant une longue chaîne hydrocarbonée lipophile et une tête hydrophile. Le cation associé peut être un cation métallique d'un métal alcalin ou alcalino-terreux. Les additifs détergents sont préférentiellement choisis parmi les sels de métaux alcalins ou de métaux alcalino-terreux d'acides carboxyliques, les sulfonates, les salicylates, les naphténates, ainsi que les sels de phénates. Les métaux alcalins et alcalino-terreux sont préférentiellement le calcium, le magnésium, le sodium ou le baryum. Ces sels métalliques comprennent généralement le métal en quantité stoechiométrique ou bien en excès, donc en quantité supérieure à la quantité stœchiométrique. Il s'agit alors d'additifs détergents surbasés ; le métal en excès apportant le caractère surbasé à l'additif détergent est alors généralement sous la forme d'un sel métallique insoluble dans l'huile, par exemple un carbonate, un hydroxyde, un oxalate, un acétate, un glutamate, préférentiellement un carbonate. De manière avantageuse, la composition lubrifiante selon l'invention peut comprendre de 2 à 4 % en poids d'additif détergent par rapport à la masse totale de la composition lubrifiante.The lubricating composition according to the invention can also comprise at least one detergent additive. Detergent additives generally make it possible to reduce the formation of deposits on the surface of metal parts by dissolving the by-products of oxidation and combustion. The detergent additives which can be used in the lubricating composition according to the invention are generally known to those skilled in the art. The detergent additives can be anionic compounds comprising a long lipophilic hydrocarbon chain and a hydrophilic head. The associated cation can be a metal cation of an alkali or alkaline earth metal. The detergent additives are preferably chosen from alkali metal or alkaline earth metal salts of carboxylic acids, sulphonates, salicylates, naphthenates, as well as salts of phenates. The alkali metals and alkaline earth metals are preferably calcium, magnesium, sodium or barium. These metal salts generally include the metal in a stoichiometric amount or else in excess, therefore in an amount greater than the stoichiometric amount. These are then overbased detergent additives; the excess metal providing the overbased character to the detergent additive is then generally in the form of a metal salt insoluble in oil, for example a carbonate, a hydroxide, an oxalate, an acetate, a glutamate, preferably a carbonate . Advantageously, the lubricating composition according to the invention can comprise from 2 to 4% by weight of detergent additive relative to the total mass of the lubricating composition.
De manière avantageuse, la composition lubrifiante selon l'invention peut également comprendre au moins un agent dispersant. L'agent dispersant peut être choisis parmi les bases de Mannich, les succinimides et leurs dérivés. De manière également avantageuse, la composition lubrifiante selon l'invention peut comprendre de 0,2 à 10 % en masse d'agent dispersant par rapport à la masse totale de la composition lubrifiante.Advantageously, the lubricating composition according to the invention can also comprise at least one dispersing agent. The dispersing agent can be chosen from Mannich bases, succinimides and their derivatives. Also advantageously, the lubricating composition according to the invention can comprise from 0.2 to 10% by mass of dispersing agent relative to the total mass of the lubricating composition.
De manière avantageuse, la composition lubrifiante peut également comprendre au moins un polymère améliorant l'indice de viscosité. Comme exemples de polymère améliorant l'indice de viscosité, on peut citer les esters polymères, les homopolymères ou les copolymères, hydrogénés ou non- hydrogénés, du styrène, du butadiène et de l'isoprène, les polyméthacrylates (PMA). De manière également avantageuse, la composition lubrifiante selon l'invention peut comprendre de 1 à 15 % en masse par rapport à la masse totale de la composition lubrifiante de polymère améliorant l'indice de viscosité.Advantageously, the lubricating composition can also comprise at least one polymer improving the viscosity index. As examples of polymer improving the viscosity index, mention may be made of polymer esters, homopolymers or copolymers, hydrogenated or non-hydrogenated, of styrene, butadiene and isoprene, and polymethacrylates (PMA). Also advantageously, the composition lubricant according to the invention can comprise from 1 to 15% by mass relative to the total mass of the lubricating polymer composition improving the viscosity index.
L'invention concerne également l'utilisation en tant que lubrifiant de la composition lubrifiante selon l'invention. De manière préférée, la composition lubrifiante selon l'invention est utile pour lubrifier un système d'engrenages, en particulier une transmission de véhicule, notamment un pont ou une boîte de vitesses.The invention also relates to the use as a lubricant of the lubricating composition according to the invention. Preferably, the lubricating composition according to the invention is useful for lubricating a gear system, in particular a vehicle transmission, in particular a axle or a gearbox.
La composition selon l'invention est également avantageusement utilisée pour réduire la consommation de carburant d'un moteur, en particulier d'un moteur de véhicule. De manière préférée, la composition selon l'invention est utilisée pour réduire la consommation de carburant d'un véhicule équipé d'une transmission, notamment d'un pont ou d'une boîte de vitesses, lubrifiée au moyen de cette composition.The composition according to the invention is also advantageously used for reducing the fuel consumption of an engine, in particular of a vehicle engine. Preferably, the composition according to the invention is used to reduce the fuel consumption of a vehicle equipped with a transmission, in particular an axle or a gearbox, lubricated by means of this composition.
L'invention concerne également l'utilisation d'au moins une composition lubrifiante selon l'invention pour réduire le coefficient de traction d'une huile de transmission, de manière préférée pour réduire le coefficient de traction d'une huile pour boîte de vitesses, en particulier d'une boîte de vitesse d'un véhicule.The invention also relates to the use of at least one lubricating composition according to the invention for reducing the traction coefficient of a transmission oil, preferably for reducing the traction coefficient of a gearbox oil, in particular of a gearbox of a vehicle.
L'invention concerne également l'utilisation pour diminuer le coefficient de traction d'une composition lubrifiante comprenant au moins une PAO lourde (b) et au moins une PAO légère (c) et au moins 30% en poids de composition d'un monoester (a) de formule (I) défini selon l'invention.The invention also relates to the use for reducing the tensile coefficient of a lubricating composition comprising at least one heavy PAO (b) and at least one light PAO (c) and at least 30% by weight of composition of a monoester. (a) of formula (I) defined according to the invention.
Les utilisations de la composition lubrifiante selon l'invention comprennent la mise en contact d'au moins un élément de la transmission, en particulier de la boîte de vitesses ou du pont, avec une composition lubrifiante selon l'invention.The uses of the lubricating composition according to the invention comprise bringing at least one element of the transmission, in particular the gearbox or the axle, into contact with a lubricating composition according to the invention.
Par analogie, les caractéristiques particulières, avantageuses ou préférées de la composition lubrifiante selon l'invention, ainsi que du monoester (a) et des huiles polyalphaoléfiniques (b) et (c), définissent des utilisations particulières, avantageuses ou préférées selon l'invention.By analogy, the particular, advantageous or preferred characteristics of the lubricating composition according to the invention, as well as of the monoester (a) and of the polyalphaolefin oils (b) and (c), define particular, advantageous or preferred uses according to the invention. .
Les différents aspects de l'invention vont faire l'objet des exemples qui suivent. Ils sont fournis à titre d'illustration.The various aspects of the invention will be the subject of the examples which follow. They are provided for illustrative purposes.
On mélange de l'oléate de décyle (Stéarinerie Dubois) avec une PAO lourde (produit Spectrasyn mPAO150 de la société Exxon - KV100 d'environ 150 mm2.s-1), une première PAO légère (produit Spectrasyn 6 de la société Exxon - KV100 d'environ 6 mm2.s-1) et une seconde PAO légère (produit Spectrasyn 8 de la société Exxon ― KV100 d'environ 8 mm2.s-1).Decyl oleate (Stéarinerie Dubois) is mixed with a heavy PAO (product Spectrasyn mPAO150 from the company Exxon - KV100 of approximately 150 mm 2 .s -1 ), a first light PAO (product Spectrasyn 6 from the company Exxon - KV100 of approximately 6 mm 2 .s -1 ) and a second light PAO (Spectrasyn 8 product from the company Exxon - KV100 of approximately 8 mm 2 .s -1 ).
De manière analogue, on prépare une deuxième composition selon l'invention dans laquelle l'oléate de décyle est remplacé par du stéarate de butyle (Stéarinerie Dubois). Les quantités respectives des différents constituants sont présentées dans le tableau 1 et sont exprimées en % massique par rapport à la masse de la composition finale. L'indice de viscosité (Viscosity Index en anglais ou VI) est mesuré selon la norme ASTM D2270.
De manière analogue à l'exemple 1, on prépare 3 compositions lubrifiantes comparatives en remplaçant l'oléate de décyle respectivement par de l'oléate de méthyle (Stéarinerie Dubois), du stéarate de méthyle (Stéarinerie Dubois) et de l'isononanoate d'isononyle (Stéarinerie Dubois). Les quantités respectives des différents constituants sont présentées dans le tableau 2 et sont exprimées en % massique par rapport à la masse de la composition finale.
Le coefficient de traction des compositions lubrifiantes préparées est évalué et les résultats obtenus sont présentés dans le tableau 3.
Les compositions lubrifiantes selon l'invention possèdent un meilleur coefficient de traction que les compositions lubrifiantes comparatives.The lubricating compositions according to the invention have a better coefficient of traction than the comparative lubricating compositions.
Les propriétés de résistance à l'oxydation des compositions lubrifiantes préparées sont évaluées selon la norme CEC-L48-A-00 méthode A et les résultats obtenus sont présentés dans le tableau 4. Plus la variation de KV 100 (R KV 100) est importante, plus faible est la résistance à l'oxydation. Plus la variation de KV 40 (R KV 40) est importante, plus faible est la résistance à l'oxydation. Plus la variation de TAN (Total Acid Number en anglais, R TAN) est importante, plus faible est la résistance à l'oxydation. Plus le PAl (Peak Area Increase en anglais) est important, plus faible est la résistance à l'oxydation.
La composition lubrifiante selon l'invention possède une résistance à l'oxydation qui est supérieure à celle de la composition lubrifiante comparative. Aucun dépôt de composés insolubles ne se produit avec la composition lubrifiante selon l'invention.The lubricating composition according to the invention has an oxidation resistance which is greater than that of the comparative lubricating composition. No deposit of insoluble compounds occurs with the lubricating composition according to the invention.
Ces résultats montrent également que les compositions lubrifiantes selon l'invention conservent un indice de viscosité élevé et sont donc compatibles avec des applications en tant que lubrifiants transmissions ou lubrifiants moteurs.These results also show that the lubricating compositions according to the invention retain a high viscosity index and are therefore compatible with applications as transmission lubricants or engine lubricants.
Claims (15)
- A lubricating composition comprising(a) at least 30 % by weight of the composition of at least one monoester of formula (I)
■ R1 represents a hydrocarbon group, either saturated or unsaturated, linear or branched, comprising from 14 to 24 carbon atoms;■ R2 represents a hydrocarbon group, either saturated or unsaturated, linear or branched, comprising from 2 to 18 carbon atoms ;(b) at least one polyalphaolefin oil (PAO) for which the kinematic viscosity measured at 100 °C according to the ASTM D445 standard ranges from 40 to 3,000 mm2.s-1;(c) at least one polyalphaolefin oil (PAO) for which the kinematic viscosity measured at 100 °C according to the ASTM D445 standard ranges from 1.5 to 10 mm2.s-1. - The lubricating composition according to claim 1 comprising from 30 to 70% by weight of the composition, preferably from 30 to 60 % by weight, preferably from 30 to 50% by weight of the monoester composition of formula (I).
- The lubricating composition according to one of claims 1 and 2 for which:■ R1 is a saturated group and R2 is an unsaturated group, or■ R1 is an unsaturated group and R2 is a saturated group, or■ R1 and R2 are saturated groups, or■ R1 and R2 are unsaturated groups.
- The lubricating composition according to one of claims 1 to 3 for which■ R1 represents a hydrocarbon group, either saturated or unsaturated, linear or branched, comprising from 14 to 20 carbon atoms, preferentially from 14 to 18 carbon atoms, more preferentially from 16 to 18 carbon atoms; or■ R2 represents a hydrocarbon group, either saturated or unsaturated, linear or branched, comprising from 3 to 14 carbon atoms, preferentially from 4 to 12 carbon atoms, more preferentially from 4 to 10 carbon atoms; or■ R1 is a linear group and R2 is a branched group; or■ R1 is a branched group and R2 is a linear group; or■ R1 and R2 are linear groups; or■ R1 and R2 are branched groups.
- The lubricating composition according to one of claims 1 to 4 for which only R1, only R2 or R1 and R2 are selected from among■ a linear saturated group;■ a branched saturated group comprising from 1 to 5 branched chains;■ a branched saturated group for which the branched chains comprise from 1 to 5 carbon atoms;■ a branched saturated group comprising from 1 to 5 branched chains and for which the branched chains comprise from 1 to 5 carbon atoms.
- The lubricating composition according to one of claims 1 to 5 for which the monoester is selected from among■ stearates, preferably alkyl stearates and alkenyl stearates, more preferentially C4-C10-alkyl stearates, in particular butyl stearate, pentyl stearate, hexyl stearate, heptyl stearate, octyl stearate, nonyl stearate, decyl stearate;■ oleates, preferably alkyl oleates and alkenyl oleates, more preferentially C4-C10-alkyl oleates, in particular butyl oleate, pentyl oleate, hexyl oleate, heptyl oleate, octyl oleate, nonyl oleate, decyl oleate.
- The lubricating composition according to one of claims 1 to 6 for which the monoester is selected from among alkene monoesters and alkyl monoesters, preferably C2-C10-alkyl monoesters.
- The lubricating composition according to one of claims 1 to 7 for which:■ the kinematic viscosity of the polyalphaolefin oil (b), measured at 100 °C according to the ASTM D445 standard, ranges from 40 to 1,500 mm2.s-1, preferably from 40 to 300 mm2.s-1, or■ the average molecular mass by weight of the polyalphaolefin oil (b) is greater than 2,500 Da, preferably ranges from 2,500 to 80,000 Da, preferably ranges from 4,000 to 50,000 Da.
- The lubricating composition according to one of claims 1 to 8 for which:■ the kinematic viscosity of the polyalphaolefin oil (c), measured at 100 °C according to the ASTM D445 standard, ranges from 1.5 to 10 mm2.s-1, preferably from 1.5 to 6 mm2.s-1, preferably from 2 to 8 mm2.s-1, or■ the average molecular mass by weight of the polyalphaolefin oil (c) is less than 500 Da, preferably ranges from 50 to 500 Da, preferably ranges from 50 to 350 Da, preferably ranges from 50 to 300 Da.
- The lubricating composition according to one of claims 1 to 9 comprising from 5 to 30% by weight, preferably from 5 to 25% by weight, of the composition of a polyalphaolefin oil (b).
- The lubricating composition according to one of claims 1 to 10, comprising from 5 to 70% by weight, preferably from 30 to 70% by weight, of the composition of a polyalphaolefin oil (c).
- The lubricating composition according to one of claims 1 to 10 comprising■ one, two or three monoesters (a); or■ one, two or three polyalphaolefin oils (b); or■ one, two or three polyalphaolefin oils (c); or comprising a single monoester (a), a single polyalphaolefin oil (b) and a single polyalphaolefin oil (c).
- The lubricating composition according to one of claims 1 to 11 also comprising at least one PPD agent (for point depressant agent or agent for reducing the flow point).
- The use of at least one lubricating composition according to one of claims 1 to 13,■ for lubricating a system of gears, in particular a vehicle transmission, notably a bridge or a gear box, or■ for reducing the fuel consumption of an engine, in particular of a vehicle engine, or■ for reducing the fuel consumption of a vehicle equipped with a transmission, notably with a bridge or a gear box, lubricated by means of this composition, or■ for reducing the traction coefficient of a transmission oil, notably of a gear box oil in particular of a gear box of a vehicle.
- The use for reducing the traction coefficient of a lubricating composition comprising at least one heavy PAO (b) and at least one lightweight PAO (c) and at least 30% by weight of a composition of a monoester (a) of formula (I) defined according to one of claims 1 to 13.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1552387A FR3034100B1 (en) | 2015-03-23 | 2015-03-23 | LUBRICANT COMPOSITION |
| PCT/EP2016/056237 WO2016150950A1 (en) | 2015-03-23 | 2016-03-22 | Lubricating composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3274432A1 EP3274432A1 (en) | 2018-01-31 |
| EP3274432B1 true EP3274432B1 (en) | 2021-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16711811.6A Active EP3274432B1 (en) | 2015-03-23 | 2016-03-22 | Lubricating composition |
Country Status (6)
| Country | Link |
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| US (1) | US20180112148A1 (en) |
| EP (1) | EP3274432B1 (en) |
| JP (1) | JP2018509512A (en) |
| CN (1) | CN107466315A (en) |
| FR (1) | FR3034100B1 (en) |
| WO (1) | WO2016150950A1 (en) |
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|---|---|---|---|---|
| JP6500271B2 (en) * | 2015-03-30 | 2019-04-17 | 出光興産株式会社 | Lubricating oil composition |
| JP6789615B2 (en) * | 2015-03-31 | 2020-11-25 | 出光興産株式会社 | Lubricating oil composition for transmission |
| US10858610B2 (en) | 2017-03-24 | 2020-12-08 | Exxonmobil Chemical Patents Inc. | Cold cranking simulator viscosity boosting base stocks and lubricating oil formulations containing the same |
| US10876062B2 (en) | 2017-03-24 | 2020-12-29 | Exxonmobil Chemical Patents Inc. | Cold cranking simulator viscosity boosting base stocks and lubricating oil formulations containing the same |
| WO2018175046A1 (en) * | 2017-03-24 | 2018-09-27 | Exxonmobil Chemical Patents Inc. | Cold cranking simulator viscosity boosting base stocks and lubricating oil formulations containing the same |
| EP3601504A1 (en) * | 2017-03-24 | 2020-02-05 | ExxonMobil Chemical Patents Inc. | Cold cranking simulator viscosity boosting base stocks and lubricating oil formulations containing the same |
| WO2018175047A1 (en) * | 2017-03-24 | 2018-09-27 | Exxonmobil Chemical Patents Inc. | Cold cranking simulator viscosity boosting base stocks and lubricating oil formulations containing the same |
| US10738258B2 (en) | 2017-03-24 | 2020-08-11 | Exxonmobil Research And Engineering Company | Method for improving engine fuel efficiency and energy efficiency |
| US10808196B2 (en) | 2017-03-28 | 2020-10-20 | Exxonmobil Chemical Patents Inc. | Cold cranking simulator viscosity reducing base stocks and lubricating oil formulations containing the same |
| FR3094377B1 (en) * | 2019-04-01 | 2021-05-21 | Total Marketing Services | Lubricating composition for transmission |
| EP4069808B1 (en) | 2019-12-04 | 2023-08-23 | The Lubrizol Corporation | Ester base stocks to improve viscosity index and efficiency in driveline and industrial gear lubricating fluids |
| CN115777010A (en) * | 2020-09-30 | 2023-03-10 | 埃克森美孚技术与工程公司 | Low friction and low traction lubricant composition useful for dry clutch motorcycles |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4956122A (en) * | 1982-03-10 | 1990-09-11 | Uniroyal Chemical Company, Inc. | Lubricating composition |
| CA1208196A (en) * | 1982-03-10 | 1986-07-22 | Raymond F. Watts | Lubricating composition |
| US4464277A (en) * | 1982-10-25 | 1984-08-07 | Standard Oil Company (Indiana) | Synthetic lubricant composition |
| US6713439B2 (en) * | 2002-06-05 | 2004-03-30 | Infineum International Ltd. | Energy conserving power transmission fluids |
| EP1670883A1 (en) * | 2003-09-13 | 2006-06-21 | ExxonMobil Chemical Patents Inc. | Lubricating compositions for automotive gears |
| US7732389B2 (en) * | 2005-02-04 | 2010-06-08 | Exxonmobil Chemical Patents Inc. | Lubricating fluids with low traction characteristics |
| JP5396628B2 (en) * | 2008-02-28 | 2014-01-22 | 東燃ゼネラル石油株式会社 | Lubricating oil composition |
| FR2936812B1 (en) * | 2008-10-03 | 2010-10-15 | Total France | LUBRICATING COMPOSITIONS FOR TRANSMISSIONS. |
| CN102776056B (en) * | 2012-08-13 | 2014-04-02 | 中国石油化工股份有限公司 | Open gear lubricant combination and preparation method thereof |
| JP6247600B2 (en) * | 2014-06-16 | 2017-12-13 | Ｊｘｔｇエネルギー株式会社 | Lubricating oil composition for transmission |
-
2015
- 2015-03-23 FR FR1552387A patent/FR3034100B1/en not_active Expired - Fee Related
-
2016
- 2016-03-22 CN CN201680017921.6A patent/CN107466315A/en active Pending
- 2016-03-22 WO PCT/EP2016/056237 patent/WO2016150950A1/en active Application Filing
- 2016-03-22 US US15/560,528 patent/US20180112148A1/en not_active Abandoned
- 2016-03-22 EP EP16711811.6A patent/EP3274432B1/en active Active
- 2016-03-22 JP JP2017549451A patent/JP2018509512A/en active Pending
Also Published As
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| CN107466315A (en) | 2017-12-12 |
| FR3034100A1 (en) | 2016-09-30 |
| WO2016150950A1 (en) | 2016-09-29 |
| US20180112148A1 (en) | 2018-04-26 |
| JP2018509512A (en) | 2018-04-05 |
| EP3274432A1 (en) | 2018-01-31 |
| FR3034100B1 (en) | 2017-04-28 |
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