EP3529341B1 - Lubricant composition - Google Patents
Lubricant composition Download PDFInfo
- Publication number
- EP3529341B1 EP3529341B1 EP17787408.8A EP17787408A EP3529341B1 EP 3529341 B1 EP3529341 B1 EP 3529341B1 EP 17787408 A EP17787408 A EP 17787408A EP 3529341 B1 EP3529341 B1 EP 3529341B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- astm
- pag
- lubricating composition
- use according
- oxide units
- 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.)
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- 239000000203 mixture Substances 0.000 title claims description 130
- 239000000314 lubricant Substances 0.000 title claims description 6
- 229920001515 polyalkylene glycol Polymers 0.000 claims description 43
- 239000002199 base oil Substances 0.000 claims description 33
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical group C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 24
- 230000005540 biological transmission Effects 0.000 claims description 21
- 239000003921 oil Substances 0.000 claims description 19
- 125000004432 carbon atom Chemical group C* 0.000 claims description 8
- 125000002947 alkylene group Chemical group 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 150000002009 diols Chemical class 0.000 claims description 4
- 238000005461 lubrication Methods 0.000 claims description 4
- 229920005862 polyol Polymers 0.000 claims description 4
- 150000003077 polyols Chemical class 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 2
- 230000001050 lubricating effect Effects 0.000 description 88
- 239000000654 additive Substances 0.000 description 35
- 239000003963 antioxidant agent Substances 0.000 description 17
- -1 alkyl methacrylates Chemical class 0.000 description 15
- 239000000446 fuel Substances 0.000 description 14
- 239000003599 detergent Substances 0.000 description 13
- 229920013639 polyalphaolefin Polymers 0.000 description 11
- 230000000996 additive effect Effects 0.000 description 10
- 150000001875 compounds Chemical class 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 9
- 238000012360 testing method Methods 0.000 description 8
- 101000692259 Homo sapiens Phosphoprotein associated with glycosphingolipid-enriched microdomains 1 Proteins 0.000 description 7
- 102100026066 Phosphoprotein associated with glycosphingolipid-enriched microdomains 1 Human genes 0.000 description 7
- 239000007866 anti-wear additive Substances 0.000 description 7
- 239000003607 modifier Substances 0.000 description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 6
- 125000003118 aryl group Chemical group 0.000 description 6
- 239000002270 dispersing agent Substances 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000002585 base Substances 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- 239000005069 Extreme pressure additive Substances 0.000 description 4
- 241001602688 Pama Species 0.000 description 4
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical group CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 4
- 125000000217 alkyl group Chemical group 0.000 description 4
- 150000001412 amines Chemical class 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 150000002989 phenols Chemical class 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- AHLWZBVXSWOPPL-RGYGYFBISA-N 20-deoxy-20-oxophorbol 12-myristate 13-acetate Chemical compound C([C@]1(O)C(=O)C(C)=C[C@H]1[C@@]1(O)[C@H](C)[C@H]2OC(=O)CCCCCCCCCCCCC)C(C=O)=C[C@H]1[C@H]1[C@]2(OC(C)=O)C1(C)C AHLWZBVXSWOPPL-RGYGYFBISA-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
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- BTHAQRDGBHUQMR-UHFFFAOYSA-N [S]P(=O)=O Chemical compound [S]P(=O)=O BTHAQRDGBHUQMR-UHFFFAOYSA-N 0.000 description 3
- 150000001298 alcohols Chemical class 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 150000001735 carboxylic acids Chemical class 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 230000000994 depressogenic effect Effects 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 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
- 229910052725 zinc Inorganic materials 0.000 description 3
- 102100024003 Arf-GAP with SH3 domain, ANK repeat and PH domain-containing protein 1 Human genes 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-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
- 101100380306 Homo sapiens ASAP1 gene Proteins 0.000 description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- 101150003633 PAG2 gene Proteins 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 101000987219 Sus scrofa Pregnancy-associated glycoprotein 1 Proteins 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
- 150000001336 alkenes Chemical class 0.000 description 2
- 150000004982 aromatic amines Chemical class 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 238000007334 copolymerization reaction Methods 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
- 229930195729 fatty acid Natural products 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 150000002924 oxiranes Chemical class 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
- 229920000058 polyacrylate Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 229920000193 polymethacrylate Polymers 0.000 description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 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
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 description 1
- RBACIKXCRWGCBB-UHFFFAOYSA-N 1,2-Epoxybutane Chemical compound CCC1CO1 RBACIKXCRWGCBB-UHFFFAOYSA-N 0.000 description 1
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-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
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 102100026291 Arf-GAP with SH3 domain, ANK repeat and PH domain-containing protein 2 Human genes 0.000 description 1
- 101710112065 Arf-GAP with SH3 domain, ANK repeat and PH domain-containing protein 2 Proteins 0.000 description 1
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 239000005749 Copper compound Substances 0.000 description 1
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-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
- 241001465754 Metazoa Species 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
- 241000135309 Processus Species 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N Propene Chemical compound CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 125000003158 alcohol group Chemical group 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- 125000004450 alkenylene group Chemical group 0.000 description 1
- 150000008064 anhydrides Chemical class 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
- 230000003416 augmentation Effects 0.000 description 1
- 239000010718 automatic transmission oil Substances 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
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000004517 catalytic hydrocracking Methods 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 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
- 238000011033 desalting Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 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
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 229940082150 encore Drugs 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 230000001747 exhibiting effect Effects 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
- 229920001519 homopolymer Polymers 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 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
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 150000002734 metacrylic acid derivatives Chemical class 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- DNIAPMSPPWPWGF-UHFFFAOYSA-N monopropylene glycol Natural products CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- AFFLGGQVNFXPEV-UHFFFAOYSA-N n-decene Natural products CCCCCCCCC=C AFFLGGQVNFXPEV-UHFFFAOYSA-N 0.000 description 1
- 125000005609 naphthenate group Chemical class 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 239000005076 polymer ester Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 125000000075 primary alcohol group Chemical group 0.000 description 1
- 235000013772 propylene glycol Nutrition 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 150000003873 salicylate salts Chemical class 0.000 description 1
- 150000003333 secondary alcohols Chemical class 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
- 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 group [O-]S(*)(=O)=O 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 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
- 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
- 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
-
- 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
- C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
- C10M145/18—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M145/24—Polyethers
- C10M145/26—Polyoxyalkylenes
- C10M145/34—Polyoxyalkylenes of two or more specified different types
-
- 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
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/106—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing four carbon atoms only
-
- 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
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/106—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing four carbon atoms only
- C10M2209/1065—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing four carbon atoms only used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/02—Viscosity; Viscosity index
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/04—Molecular weight; Molecular weight distribution
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/02—Pour-point; Viscosity index
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/08—Resistance to extreme temperature
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/54—Fuel economy
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/68—Shear stability
-
- 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
Definitions
- the present application relates to the field of lubricating compositions, more particularly the field of lubricating compositions for engines, in particular motor vehicle engines, for transmissions and for gears. More particularly, the present application relates to the field of lubricating compositions for transmissions and gears.
- Lubricating compositions for transmissions for example gearboxes or axles
- gears for gears, in particular industrial gears
- driving comfort perfect gear shifting, silent running, trouble-free operation, high reliability
- service life of the assembly reduction of wear during cold switching, no deposits and high thermal stability, lubrication safety at high temperatures, stable viscosity situation and no shear loss, long service life
- environmental aspects lower fuel consumption, reduced lubricant consumption, low noise, easy evacuation.
- ATF oils for automatic transmission fluids are very specific and concern in particular a high consistency of the coefficient of friction throughout the duration of the stay for an optimal gear change, excellent stability to aging for long drain intervals, good viscosity-temperature resistance to guarantee perfect operation with a hot engine and a cold engine and sufficient seal compatibility with various elastomers used in transmission seals so that they do not swell not, shrink or become brittle.
- the search for the reduction of CO 2 emissions requires the development of products to reduce friction in gearboxes and in axle differentials. This reduction in friction in gearboxes and in axle differentials must be obtained for different operating conditions. These reductions in friction must relate to the friction internal to the lubricant but also the friction of the elements constituting the gearboxes or the differentials of bridges, in particular the metal elements.
- PAMA Polyalkyl methacrylates
- Polyalphaolefins are also used because they have good shear stability, however their viscosity index contribution is low.
- One objective of the present invention is therefore to provide a lubricating composition, in particular for transmissions and gears, exhibiting a compromise between viscosity index and shear stability.
- Another objective of the present invention is also to provide such a composition which exhibits viscosity stability as a function of temperature, that is to say a good viscosity index.
- Yet another objective of the present invention is to provide such a composition allowing a gain in Fuel Eco.
- the PAG used in the invention comprises at least 80% by weight of butylene oxide units and propylene oxide units. Even more preferably, the PAG of the invention is a PAG whose alkylene units are only butylene oxide units.
- the PAG used in the invention is therefore described as a PAG whose alkylene oxide units are chosen from butylene oxide and propylene oxide units with at least 50% by mass, preferably at least 80% by mass, again more preferably 100% by weight, of butylene oxide units.
- the PAG used in the invention comprises 100% by mass of butylene oxide units.
- the PAG used in the invention is soluble in the base oil, and advantageously whatever the temperature.
- the PAG is obtained by polymerization or copolymerization of butylene oxides.
- the PAG of the invention can be prepared according to the known methods in particular described in US20120108482 and in particular by reaction of one or more alcohols comprising from 2 to 12 carbon atoms, in particular polyol, preferably diol, with butylene oxide and propylene oxide.
- the alcohols are in particular diols and preferably 1,2-propanediol.
- the butylene oxide can be chosen from butylene 1,2-oxide or butylene 2,3-oxide, preferably butylene 1,2-oxide.
- the process described in US20120108482 is suitable for the unique implementation of butylene oxide.
- the PAG is obtained by reaction of one or more polyols comprising from 2 to 12 carbon atoms, preferably diol, with butylene oxides.
- the PAG used in the invention comprises from 25 to 300 moles of butylene oxide units, preferably from 50 to 200 moles.
- the PAG used in the invention comprises an O/C (oxygen atom/carbon atom) ratio by weight of between 0.29 and 0.38, preferably between 0.29 and 0.35.
- O/C oxygen atom/carbon atom
- the PAG used in the invention has a molar mass of between 5,000 and 200,000 g/mol.
- the PAG used in the invention has a kinematic viscosity, measured at 100° C. according to the ASTM D445 (2015) standard, of between 50 and 500 mm 2 /s, a kinematic viscosity, measured at 40° C. according to the ASTM D445 (2015) standard, between 500 and 4,000 mm 2 /s and a Viscosity Index, measured according to ASTM D2270 (2012) standard, between 160 and 300.
- the PAG used in the invention in particular comprising 100% by mass of butylene oxide units, has a kinematic viscosity, measured at 40° C. according to standard ASTM D445 (2015), of between 1,000 and 4,500 mm 2 /s, preferably between 1000 and 4250 mm 2 /s, and preferably between 1100 and 4250 mm 2 /s.
- the PAG used in the invention in particular comprising 100% by mass of butylene oxide units, has a Viscosity Index, measured according to the ASTM D2270 (2012) standard, of between 180 and 300, preferably between 200 and 300.
- the PAG has a viscosity kinematic measured at 100°C according to ASTM D445 (2015) between 50 and 500 mm 2 /s, a kinematic viscosity measured at 40°C according to the ASTM D445 (2015) standard of between 1,000 and 4,500 mm 2 /s and a Viscosity Index measured according to the ASTM D2270 (2012) standard of between 180 and 300.
- the lubricating composition used according to the invention comprises at most 30% by weight of PAG, preferably from 2% to 30% by weight of PAG, more preferably from 2% to 15% relative to the total weight of the lubricating composition.
- the lubricating composition used according to the invention comprises at most 30% by weight of PAG, preferably from 6% to 30% by weight of PAG, more preferably from 9% to 16% relative to the total weight of the lubricating composition.
- the lubricating composition used according to the invention comprises at least one base oil.
- the lubricating composition used according to the invention can comprise any type of mineral, synthetic or natural, animal or vegetable lubricating base oil, known to those skilled in the art.
- the base oils used in the lubricating compositions according to the invention can be oils of mineral or synthetic origin belonging to groups I to V according to the classes defined in the API classification (or their equivalents according to the ATIEL classification) (table A) or mixtures thereof.
- Table A Saturates content Sulfur content Viscosity index (VI) Group I Mineral oils ⁇ 90% > 0.03% 80 ⁇ VI ⁇ 120 Group II Hydrocracked oils >90% ⁇ 0.03% 80 ⁇ VI ⁇ 120 Group III Hydrocracked or hydroisomerized oils >90% ⁇ 0.03% ⁇ 120 Group IV Polyalphaolefins (PAO) Group V Esters and other bases not included in groups I to IV
- the mineral base oils according to the invention include all types of base oils obtained by atmospheric and vacuum distillation of crude oil, followed by refining operations such as solvent extraction, desalting, solvent dewaxing, hydrotreating, hydrocracking , hydroisomerization and hydrofinishing.
- Blends 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 used according to the invention, except that they must have properties, in particular viscosity, resistance to oxidation, suitable for use in motors or vehicle transmissions.
- the base oils of the lubricating compositions used according to the invention can also be chosen from synthetic oils, such as certain esters of carboxylic acids and alcohols, and from polyalphaolefins (PAO).
- the 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 ASTM D445 (2015).
- Their average molecular mass is generally between 250 and 3,000 according to the ASTM D5296 standard.
- the base oils of the present invention are chosen from the above base oils whose aromatic content is between 0 and 45%, preferably between 0 and 30%.
- the aromatic content of the oils is measured according to the UV Burdett method.
- the lubricating composition used according to the invention comprises at least 50% by mass of base oils relative to the total mass of the composition.
- the lubricating composition used 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.
- the lubricating composition used according to the invention comprises from 60 to 99.5% by mass of base oils, preferably from 70 to 99.5% by mass of base oils, relative to the total mass of the composition, preferably from 70 to 98%.
- the preferred additives for the lubricating composition used according to the invention are chosen from friction modifiers, detergents, anti-wear additives, extreme pressure additives, viscosity index improvers, dispersants, antioxidants, pour point improvers, defoamers, thickeners and mixtures thereof.
- the lubricating composition used according to the invention comprises at least one anti-wear additive, at least one extreme pressure additive or mixtures thereof.
- Anti-wear additives and extreme pressure additives protect friction surfaces by forming a protective film adsorbed on these surfaces.
- anti-wear additives are chosen from phospho-sulphur additives such as metal alkylthiophosphates, in particular zinc alkylthiophosphates, and more specifically zinc dialkyldithiophosphates or ZnDTP.
- the preferred compounds are of formula Zn((SP(S)(OR 2 )(OR 3 )) 2 , in which R 2 and R 3 , which are identical or different, independently represent an alkyl group, preferably an alkyl group comprising from 1 to 18 carbon atoms.
- 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 for the catalytic systems of automobiles because these additives are ash generators. These effects can be minimized by partially replacing the amine phosphates with additives that do not provide phosphorus, such as, for example, polysulphides, in particular sulphur-containing olefins.
- the lubricating composition according to the 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 ifying, anti-wear additives and extreme pressure additives.
- the lubricating composition used according to the invention may comprise at least one friction modifier additive.
- the friction modifier additive can be selected from a compound providing metallic elements and an ash-free compound.
- the compounds providing metallic elements mention may be made of complexes of transition metals such as Mo, Sb, Sn, Fe, Cu, Zn, the ligands of which may be hydrocarbon compounds comprising oxygen, nitrogen, sulfur or phosphorus.
- Ash-free friction modifier additives are generally of organic origin and may be selected from monoesters of fatty acids 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 may 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 to 2% by mass relative to the total mass of the lubricating composition, of friction modifier additive.
- the lubricating composition used according to the invention may 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 in particular result in the formation of deposits, in the presence of sludge or in an increase in the viscosity of the lubricating composition.
- Antioxidant additives act in particular as free radical inhibitors or hydroperoxide destroyers.
- antioxidant additives commonly employed mention may be made of antioxidant additives of the phenolic type, antioxidant additives of the amine type, phosphosulfur antioxidant additives. Some of these antioxidant additives, for example phosphosulfur antioxidant additives, can be ash generators.
- the phenolic antioxidant additives may be ash-free or may be in the form of neutral or basic metal salts.
- the antioxidant additives may 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 to the carbon carrying the alcohol function is substituted by at least one C 1 -C 10 alkyl group, preferably a C 1 -C 6 alkyl group, preferably a C 4 alkyl group, preferably by the ter-butyl group.
- Amino compounds are another class of antioxidant additives that can be used, possibly in combination with phenolic antioxidant additives.
- amino compounds are aromatic amines, for example aromatic amines of formula NR 4 R 5 R 6 in which R 4 represents an aliphatic group or an optionally substituted aromatic group, R 5 represents an optionally substituted aromatic group, R 6 represents a hydrogen atom, an alkyl group, an aryl group or a group of formula R 7 S(O) z R 8 in which R 7 represents an alkylene group or an alkenylene group, R 8 represents an alkyl group, a alkenyl group or an aryl group and z represents 0, 1 or 2.
- Sulfurized alkyl phenols or their alkali metal and alkaline earth metal salts can also be used as antioxidant additives.
- antioxidant additives are compounds copper compounds, for example copper thio- or dithio-phosphates, salts of copper and of carboxylic acids, dithiocarbamates, sulphonates, phenates, copper acetylacetonates. Copper I and II salts, succinic acid or anhydride salts can also be used.
- the lubricating composition according to the invention may contain all types of antioxidant additives known to those skilled in the art.
- the lubricating composition comprises at least one ash-free antioxidant additive.
- the lubricating composition according to the invention comprises from 0.5 to 2% by weight relative to the total mass of the composition, of at least one antioxidant additive.
- the lubricating composition used 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 secondary 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.
- 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, sulfonates, salicylates, naphthenates, as well as phenate salts.
- the alkali and alkaline-earth metals are preferably calcium, magnesium, sodium or barium. These metallic salts generally comprise the metal in a stoichiometric quantity or else in excess, therefore in a quantity greater than the stoichiometric quantity.
- the excess metal providing the overbased character to the detergent additive is then generally in the form of an oil-insoluble metal salt, for example a carbonate, a hydroxide, an oxalate, an acetate, a glutamate, preferentially a carbonate .
- the lubricating composition according to the invention may comprise from 0.5 to 4% by weight of detergent additive relative to the total mass of the lubricating composition.
- the lubricating composition according to the invention may also comprise at least one pour point depressant additive.
- the pour point depressant additives By slowing down the formation of paraffin crystals, the pour point depressant additives generally improve the cold behavior of the lubricating composition according to the invention.
- pour point depressant additives mention may be made of polyalkyl methacrylates, polyacrylates, polyarylamides, polyalkylphenols, polyalkylnaphthalenes, alkylated polystyrenes.
- the lubricating composition used 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 may comprise from 0.2 to 10% by mass of dispersing agent relative to the total mass of the lubricating composition.
- the lubricating composition used according to the present invention may also comprise at least one viscosity index improver additive.
- additives improving the viscosity index include polymer esters, homopolymers or copolymers, hydrogenated or non-hydrogenated, of styrene, butadiene and isoprene, polyacrylates, polymethacrylates (PMA) or alternatively olefin copolymers, in particular ethylene/propylene copolymers.
- the lubricating composition used according to the invention can be in different forms.
- the lubricating composition according to the invention can in particular be an anhydrous composition.
- this lubricating composition is not an emulsion.
- the base oil of the composition used according to the invention is chosen from group II oils and group III oils as defined above.
- the base oil of the composition used according to the invention comprises at least one polyalphaolefin (PAO) as described above, in particular an alkene oligomer whose final viscosity is between 2 and 500 cSt.
- PAO polyalphaolefin
- the base oil of the composition used according to the invention is chosen from group II oils and group III oils as defined above and at least one polyalphaolefin (PAO) as described above .
- PAO polyalphaolefin
- the lubricating composition used according to the invention has excellent shear stability.
- the shear stability can in particular be determined from the kinematic viscosities before and after a shearing process according to the KRL 20h test according to standard CEC-L-45-A-99 (2014).
- the shear loss is less than 5%.
- the lubricating composition used according to the invention has low coefficients of traction.
- Traction coefficient is determined by MTM machine (Mini Traction Machine) sold by PCS instrument. The operating conditions considered are a temperature of 40° C. under a load of 75 N and a disc speed of 1 m/s for an SRR (sliding-rolling ratio) of 20%.
- the lubricating composition used according to the invention has a temperature-stable viscosity.
- the lubricating composition used according to the invention allows a gain in Fuel Eco.
- the lubricating composition used according to the invention retains satisfactory anti-wear properties.
- the lubricating composition used according to the invention allows a gain in performance on cold properties.
- the lubricating composition used according to the invention is particularly useful for lubricating the transmission components of motor vehicles, in particular transmission for light or heavy vehicles, for example gearboxes, axles, preferably manual gearbox and axles for heavy goods vehicles; or for gears, in particular industrial gears.
- the present invention relates to the use of a lubricating composition according to the invention for the lubrication of motor vehicle transmission components, in particular transmission for light or heavy vehicles, for example gearboxes, axles, preferably gearbox manual and truck axles; or for gears, in particular industrial gears.
- any type of 70W and 75W grade is suitable.
- the lubricating composition used according to the present invention can also be used for lubricating engines, in particular motor vehicle engines and preferably for SAE 0W-8, 0W-12 and 0W-16 grades.
- the invention also relates to the use of the lubricating composition according to the invention for reducing the traction coefficient of a vehicle engine oil.
- the invention also relates to the use of the lubricating composition according to the invention for reducing the fuel consumption of a vehicle equipped with an axle or of a gearbox lubricated with this composition.
- the invention also relates to the use of the lubricating composition according to the invention for reducing the fuel consumption of a vehicle equipped with a transmission lubricated by means of this composition.
- the invention also relates to the use of the lubricating composition according to the invention for reducing the coefficient of traction of a transmission oil, in particular of a gearbox oil or of an axle oil.
- the present application also relates to the use of at least one PAG as defined above in a lubricating composition, in particular for motor vehicle transmission components or gears, in particular industrial gears, to increase the viscosity index of the composition. lubricating while providing stability of the lubricating composition to shear.
- the lubricating compositions were formulated with PAGs of the invention so as to have a kinematic viscosity at 100° C. of approximately 7.5 mm 2 /s, these compositions are described in Table 2 below.
- ⁇ u>Table 2 ⁇ /u> CL1 (% mass) CL2 (% mass) CL3 (% mass)
- Base oil mixture of a Group III base oil with a 71.97 76.91 77.27 13 kinematic viscosity at 40°C equal to 12 mm 2 /s and of a group III base oil with a kinematic viscosity at 40°C equal to 19 mm 2 /s
- PAG1 - 14.54 - PAG2 - - 14.18 Additives 8.55 8.55 8.55 Viscosity at 100°C (mm 2 /s) according to ASTM D445 (2015) 7.57 7.56 7.59 Viscosity at 40°C (mm 2 /s) according to ASTM D445 (2015) 37.7 36.5
- compositions CL2 and CL3 were formulated so as to have a kinematic viscosity at 100° C. of approximately 7.5 mm 2 /s, these compositions are described in table 3 below.
- the base oil and the additives are identical to those of compositions CL2 and CL3.
- compositions according to the invention have a good Brookfield viscosity, improved compared to the reference CC1.
- Shear stability is excellent. It can be seen that the solution of the invention, although more viscous, shears less than viscobase 11-522® during this test, despite the fact that the PAGs tested are more viscous than viscobase 11-522® .
- the base oil and the additives are identical to those of the compositions above. ⁇ u>Table 5 ⁇ /u> CC3 CL4 CL5 Base oils 76.95 78.37 83.5 Additives 7.25 7.25 7.25 Viscoplex 0-130® polymer 14.5 PAGE 1 14.38 PAGE 3 9.25
- the coefficient of traction was measured using the MTM tribometer from PCS instrument. The measurement conditions were 75N load and the speed of the disc was 1m/s for an evaluated temperature (40°C) and an SRR of 20%. The results are shown in Table 6 below. ⁇ u>Table 6 ⁇ /u> CC3 CL4 CL5 Viscosity at 100°C (mm 2 /s) according to ASTM D445 7.61 7.50 7.30 Viscosity index according to ASTM D2270 204 186 194 TOC (40°C, 20% SRR) 0.0516 0.0501 0.0493
- the lubricating compositions according to the invention CL4 and CL5 make it possible to lower the coefficient of traction, the reproducibility of the test being of the order of 3%.
- This reduction in the coefficient of traction is particularly advantageous in that it leads to an increase in the gain in Eco fuel.
- the test is carried out using a Hyundai L13-B engine, whose power is 81 kW at 5,500 rpm, driven by an electric generator making it possible to impose a speed of rotation between 650 and 5,000 rpm while a torque sensor measures the frictional torque generated by the movement of the parts in the engine.
- the friction torque induced by the test lubricant is compared for each speed and each temperature with the torque induced by the reference lubricating composition (SAE 0W8), here CC4.
- the rpm ranges, the rpm variation and the temperature have been chosen to cover, in the most representative way possible, the points of the NEDC-certified cycle.
- the gain in friction is evaluated for each lubricating composition (CL) as a function of the temperature and the speed of the engine and in comparison with the friction of the reference lubricating composition.
- compositions according to the invention make it possible to increase the Fuel Eco, unlike the compositions not comprising any PAG according to the invention.
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Description
La présente demande concerne le domaine des compositions lubrifiantes, plus particulièrement le domaine des compositions lubrifiantes pour moteur, notamment moteur de véhicule automobile, pour transmission et pour engrenage. Plus particulièrement, la présente demande concerne le domaine des compositions lubrifiantes pour transmission et engrenage.The present application relates to the field of lubricating compositions, more particularly the field of lubricating compositions for engines, in particular motor vehicle engines, for transmissions and for gears. More particularly, the present application relates to the field of lubricating compositions for transmissions and gears.
Les compositions lubrifiantes pour transmission (par exemple boîtes de vitesse ou pont) ou pour engrenages, notamment engrenages industriels, 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, sécurité de graissage 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 de lubrifiant, faible dégagement de bruit, évacuation facile). Il s'agit notamment des exigences imposées aux compositions lubrifiantes pour boîtes de vitesses à commande manuelle et engrenages d'essieux. Concernant les exigences imposées aux huiles de boîtes automatiques (huiles ATF pour automatic transmission fluids), elles sont très spécifiques et concernent notamment 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. Par ailleurs, dans le domaine de l'automobile, la recherche de la réduction des émissions de CO2 oblige à développer des produits 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 constituant les boîtes de vitesses ou les différentiels de ponts, en particulier les éléments métalliques.Lubricating compositions for transmissions (for example gearboxes or axles) or for gears, in particular industrial gears, must meet many requirements, in particular related to driving comfort (perfect gear shifting, silent running, trouble-free operation, high reliability ), the service life of the assembly (reduction of wear during cold switching, no deposits and high thermal stability, lubrication safety at high temperatures, stable viscosity situation and no shear loss, long service life) as well as consideration of environmental aspects (lower fuel consumption, reduced lubricant consumption, low noise, easy evacuation). These include requirements for lubricating compositions for manually operated gearboxes and axle gears. Regarding the requirements imposed on automatic transmission oils (ATF oils for automatic transmission fluids), they are very specific and concern in particular a high consistency of the coefficient of friction throughout the duration of the stay for an optimal gear change, excellent stability to aging for long drain intervals, good viscosity-temperature resistance to guarantee perfect operation with a hot engine and a cold engine and sufficient seal compatibility with various elastomers used in transmission seals so that they do not swell not, shrink or become brittle. In addition, in the automotive field, the search for the reduction of CO 2 emissions requires the development of products to reduce friction in gearboxes and in axle differentials. This reduction in friction in gearboxes and in axle differentials must be obtained for different operating conditions. These reductions in friction must relate to the friction internal to the lubricant but also the friction of the elements constituting the gearboxes or the differentials of bridges, in particular the metal elements.
Les (poly)alkylméthacrylate (PAMA) sont classiquement utilisés pour leur très bon apport en indice de viscosité mais présentent cependant une faible stabilité au cisaillement. De plus, les PAMA sont onéreux.(Poly)alkyl methacrylates (PAMA) are conventionally used for their very good contribution in viscosity index but however have a low shear stability. In addition, PAMAs are expensive.
Les polyalphaoléfines (PAO) sont également utilisées car présentent une bonne stabilité au cisaillement, cependant leur apport en indice de viscosité est faible.Polyalphaolefins (PAO) are also used because they have good shear stability, however their viscosity index contribution is low.
Il est connu de
Il est également connu de
Il y a donc un intérêt à fournir une solution permettant d'avoir un bon apport en viscosité et une bonne stabilité au cisaillement.There is therefore an interest in providing a solution making it possible to have a good viscosity supply and good shear stability.
Un objectif de la présente invention est donc de fournir une composition lubrifiante, notamment pour transmission et engrenage, présentant un compromis entre indice de viscosité et stabilité au cisaillement.One objective of the present invention is therefore to provide a lubricating composition, in particular for transmissions and gears, exhibiting a compromise between viscosity index and shear stability.
Un autre objectif de la présente invention est également de proposer une telle composition qui présente une stabilité de la viscosité en fonction de la température, c'est-à-dire un bon indice de viscosité.Another objective of the present invention is also to provide such a composition which exhibits viscosity stability as a function of temperature, that is to say a good viscosity index.
Un autre objectif encore de la présente invention est de proposer une telle composition permettant un gain de Fuel Eco.Yet another objective of the present invention is to provide such a composition allowing a gain in Fuel Eco.
D'autres objectifs encore apparaîtront à la lecture de la description de l'invention qui suit.Still other objectives will appear on reading the description of the invention which follows.
Il est décrit une composition lubrifiante comprenant :
- au moins une huile de base ;
- au moins un polyalkylène glycol (PAG), comprenant au moins 50% en masse de motifs oxyde de butylène et des motifs oxyde de propylène, ayant une viscosité cinématique, mesurée à 100°C selon la norme ASTM D445 (2015), supérieure ou égale à 50 mm2/s, une viscosité cinématique, mesurée à 40°C selon la norme ASTM D445 (2015), supérieure ou égale à 500 mm2/s, plus particulièrement supérieure ou égale à 1 000 mm2/s, et un Indice de Viscosité, mesuré selon la norme ASTM D2270 (2012), supérieur ou égal à 160, de préférence supérieur ou égal à 180, encore plus préférentiellement supérieur ou égal à 200.
- at least one base oil;
- at least one polyalkylene glycol (PAG), comprising at least 50% by mass of butylene oxide units and propylene oxide units, having a kinematic viscosity, measured at 100°C according to standard ASTM D445 (2015), greater than or equal at 50 mm 2 /s, a kinematic viscosity, measured at 40° C. according to the ASTM D445 (2015) standard, greater than or equal to 500 mm 2 /s, more particularly greater than or equal to 1000 mm 2 /s, and a Viscosity index, measured according to standard ASTM D2270 (2012), greater than or equal to 160, preferably greater than or equal to 180, even more preferably greater than or equal to 200.
Il est également décrit une composition lubrifiante comprenant :
- au moins une huile de base ;
- au moins un polyalkylène glycol (PAG), comprenant au moins 50% en masse de motifs oxyde de butylène, et de préférence comprenant uniquement des motifs oxyde de butylène, ayant une viscosité cinématique, mesurée à 100°C selon la norme ASTM D445 (2015), supérieure ou égale à 50 mm2/s, une viscosité cinématique, mesurée à 40°C selon la norme ASTM D445 (2015), supérieure ou égale à 1 000 mm2/s, et un Indice de Viscosité, mesuré selon la norme ASTM D2270 (2012), supérieur ou égal à 180.
- at least one base oil;
- at least one polyalkylene glycol (PAG), comprising at least 50% by weight of butylene oxide units, and preferably comprising only butylene oxide units, having a kinematic viscosity, measured at 100° C. according to standard ASTM D445 (2015 ), greater than or equal to 50 mm 2 /s, a kinematic viscosity, measured at 40°C according to the ASTM D445 (2015) standard, greater than or equal to 1,000 mm 2 /s, and a Viscosity Index, measured according to the ASTM D2270 (2012) standard, greater than or equal to 180.
La présente invention concerne l'utilisation d'une composition lubrifiante comprenant :
- au moins une huile de base ;
- au moins un polyalkylène glycol (PAG) comprenant au moins 50% en masse de motifs oxydes de butylène et ayant une viscosité cinématique mesurée à 100°C selon la norme ASTM D445 (2015) supérieure ou égale à 50 mm2/s, une viscosité cinématique mesurée à 40°C selon la norme ASTM D445 (2015) supérieure ou égale à 1 000 mm2/s et un Indice de Viscosité mesuré selon la norme ASTM D2270 (2012) supérieur ou égal à 180, pour diminuer le coefficient de traction lors de la lubrification d'organes de transmissions de véhicules automobiles, notamment transmission pour véhicules légers ou lourds, par exemple boîtes de vitesse, ponts, de préférence boîte de vitesse manuelle et ponts poids lourds ; ou pour les engrenages industriels.
- at least one base oil;
- at least one polyalkylene glycol (PAG) comprising at least 50% by mass of butylene oxide units and having a kinematic viscosity measured at 100°C according to standard ASTM D445 (2015) greater than or equal to 50 mm 2 /s, a viscosity kinematic measured at 40°C according to standard ASTM D445 (2015) greater than or equal to 1,000 mm 2 /s and a Viscosity Index measured according to standard ASTM D2270 (2012) greater than or equal to 180, to reduce the coefficient of traction during the lubrication of motor vehicle transmission components, in particular transmissions for light or heavy vehicles, for example gearboxes, axles, preferably manual gearboxes and HGV axles; or for industrial gears.
Il doit bien être compris, dans le cadre de la présente invention, que l'huile de base et le PAG sont deux composés distincts.It should be clearly understood, in the context of the present invention, that the base oil and the PAG are two distinct compounds.
De préférence, le PAG utilisé dans l'invention comprend au moins 80% en masse de motifs oxyde de butylène et des motifs oxyde de propylène. De manière encore plus préférée, le PAG de l'invention est un PAG dont les motifs alkylènes sont uniquement des motifs oxyde de butylène.Preferably, the PAG used in the invention comprises at least 80% by weight of butylene oxide units and propylene oxide units. Even more preferably, the PAG of the invention is a PAG whose alkylene units are only butylene oxide units.
Le PAG utilisé dans l'invention est donc décrit comme un PAG dont les motifs oxyde d'alkylène sont choisis parmi des motifs oxyde de butylène et oxyde de propylène avec au moins 50% en masse, de préférence au moins 80% en masse, encore plus préféré 100% en masse, de motifs oxyde de butylène.The PAG used in the invention is therefore described as a PAG whose alkylene oxide units are chosen from butylene oxide and propylene oxide units with at least 50% by mass, preferably at least 80% by mass, again more preferably 100% by weight, of butylene oxide units.
Selon un mode de réalisation préférentiel, le PAG utilisé dans l'invention comprend 100% en masse de motifs oxyde de butylène.According to a preferred embodiment, the PAG used in the invention comprises 100% by mass of butylene oxide units.
De manière particulièrement avantageuse, le PAG utilisé dans l'invention est soluble dans l'huile de base, et de façon avantageuse quelle que soit la température.Particularly advantageously, the PAG used in the invention is soluble in the base oil, and advantageously whatever the temperature.
De préférence, le PAG est obtenu par polymérisation ou copolymérisation d'oxydes de butylène. Notamment le PAG de l'invention peut être préparé selon les méthodes connues notamment décrites dans
Selon un mode de réalisation, le PAG est obtenu par réaction d'un ou plusieurs polyols comprenant de 2 à 12 atomes de carbone, de préférence diol, avec des oxydes de butylène.According to one embodiment, the PAG is obtained by reaction of one or more polyols comprising from 2 to 12 carbon atoms, preferably diol, with butylene oxides.
De préférence, le PAG utilisé dans l'invention comprend de 25 à 300 moles de motifs oxyde de butylène, de préférence de 50 à 200 moles.Preferably, the PAG used in the invention comprises from 25 to 300 moles of butylene oxide units, preferably from 50 to 200 moles.
De préférence, le PAG utilisé dans l'invention comprend un ratio O/C (atome d'oxygène/atome de carbone) en poids compris entre 0,29 et 0,38, de préférence compris entre 0,29 et 0,35.Preferably, the PAG used in the invention comprises an O/C (oxygen atom/carbon atom) ratio by weight of between 0.29 and 0.38, preferably between 0.29 and 0.35.
De préférence, le PAG utilisé dans l'invention présente une masse molaire comprise entre 5 000 et 200 000 g/mol.Preferably, the PAG used in the invention has a molar mass of between 5,000 and 200,000 g/mol.
De préférence, le PAG utilisé dans l'invention présente une viscosité cinématique, mesurée à 100°C selon la norme ASTM D445 (2015), comprise entre 50 et 500 mm2/s, une viscosité cinématique, mesurée à 40°C selon la norme ASTM D445 (2015), comprise entre 500 et 4 000 mm2/s et un Indice de Viscosité, mesuré selon la norme ASTM D2270 (2012), compris entre 160 et 300.Preferably, the PAG used in the invention has a kinematic viscosity, measured at 100° C. according to the ASTM D445 (2015) standard, of between 50 and 500 mm 2 /s, a kinematic viscosity, measured at 40° C. according to the ASTM D445 (2015) standard, between 500 and 4,000 mm 2 /s and a Viscosity Index, measured according to ASTM D2270 (2012) standard, between 160 and 300.
Préférentiellement, le PAG utilisé dans l'invention, en particulier comprenant 100% en masse de motifs oxyde de butylène, présente une viscosité cinématique, mesurée à 40°C selon la norme ASTM D445 (2015), comprise entre 1 000 et 4 500 mm2/s, de préférence entre 1 000 et 4 250 mm2/s, et préférentiellement entre 1 100 et 4 250 mm2/s.Preferably, the PAG used in the invention, in particular comprising 100% by mass of butylene oxide units, has a kinematic viscosity, measured at 40° C. according to standard ASTM D445 (2015), of between 1,000 and 4,500 mm 2 /s, preferably between 1000 and 4250 mm 2 /s, and preferably between 1100 and 4250 mm 2 /s.
Préférentiellement, le PAG utilisé dans l'invention, en particulier comprenant 100% en masse de motifs oxyde de butylène, présente un Indice de Viscosité, mesuré selon la norme ASTM D2270 (2012), compris entre 180 et 300, de préférence entre 200 et 300.Preferably, the PAG used in the invention, in particular comprising 100% by mass of butylene oxide units, has a Viscosity Index, measured according to the ASTM D2270 (2012) standard, of between 180 and 300, preferably between 200 and 300.
Selon un mode particulièrement préféré, le PAG présente une viscosité cinématique mesurée à 100°C selon la norme ASTM D445 (2015) comprise entre 50 et 500 mm2/s, une viscosité cinématique mesurée à 40°C selon la norme ASTM D445 (2015) comprise entre 1 000 et 4 500 mm2/s et un Indice de Viscosité mesuré selon la norme ASTM D2270 (2012) compris entre 180 et 300.According to a particularly preferred embodiment, the PAG has a viscosity kinematic measured at 100°C according to ASTM D445 (2015) between 50 and 500 mm 2 /s, a kinematic viscosity measured at 40°C according to the ASTM D445 (2015) standard of between 1,000 and 4,500 mm 2 /s and a Viscosity Index measured according to the ASTM D2270 (2012) standard of between 180 and 300.
De préférence, la composition lubrifiante utilisée selon l'invention comprend au plus 30% en poids de PAG, de préférence de 2% à 30% en poids de PAG, de manière plus préférentielle de 2% à 15% par rapport au poids total de la composition lubrifiante.Preferably, the lubricating composition used according to the invention comprises at most 30% by weight of PAG, preferably from 2% to 30% by weight of PAG, more preferably from 2% to 15% relative to the total weight of the lubricating composition.
De préférence, la composition lubrifiante utilisée selon l'invention comprend au plus 30% en poids de PAG, de préférence de 6% à 30% en poids de PAG, de manière plus préférentielle de 9% à 16% par rapport au poids total de la composition lubrifiante.Preferably, the lubricating composition used according to the invention comprises at most 30% by weight of PAG, preferably from 6% to 30% by weight of PAG, more preferably from 9% to 16% relative to the total weight of the lubricating composition.
La composition lubrifiante utilisée selon l'invention comprend au moins une huile de base. De manière générale, la composition lubrifiante utilisée selon l'invention peut comprendre tout type d'huile de base lubrifiante minérale, synthétique ou naturelle, animale ou végétale, connue de l'Homme du métier.The lubricating composition used according to the invention comprises at least one base oil. In general, the lubricating composition used according to the invention can comprise any type of mineral, synthetic or natural, animal or vegetable lubricating base oil, known to those skilled in the art.
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 API (ou leurs équivalents selon la classification ATIEL) (tableau A) ou leurs mélanges.
Les huiles de base minérales selon l'invention incluent tous types d'huiles de base 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.The mineral base oils according to the invention include all types of base oils obtained by atmospheric and vacuum distillation of crude oil, followed by refining operations such as solvent extraction, desalting, solvent dewaxing, hydrotreating, hydrocracking , hydroisomerization and hydrofinishing.
Des mélanges d'huiles synthétiques et minérales peuvent également être employés.Blends 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 utilisées selon l'invention, si ce n'est qu'elles doivent avoir des propriétés, notamment de viscosité, 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 used according to the invention, except that they must have properties, in particular viscosity, resistance to oxidation, suitable for use in motors or vehicle transmissions.
Les huiles de bases des compositions lubrifiantes utilisées selon l'invention peuvent également être choisies parmi les huiles synthétiques, telles certains esters d'acides carboxyliques et d'alcools, et parmi les polyalphaoléfines (PAO). Les 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 (2015). Leur masse moléculaire moyenne est généralement comprise entre 250 et 3 000 selon la norme ASTM D5296.The base oils of the lubricating compositions used according to the invention can also be chosen from synthetic oils, such as certain esters of carboxylic acids and alcohols, and from polyalphaolefins (PAO). The 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 ASTM D445 (2015). Their average molecular mass is generally between 250 and 3,000 according to the ASTM D5296 standard.
De manière préférée, les huiles de base de la présente invention sont choisies parmi les huiles de base ci-dessus dont la teneur en aromatique est comprise entre 0 et 45%, de préférence entre 0 et 30%. La teneur en aromatique des huiles est mesurée selon la méthode UV Burdett.Preferably, the base oils of the present invention are chosen from the above base oils whose aromatic content is between 0 and 45%, preferably between 0 and 30%. The aromatic content of the oils is measured according to the UV Burdett method.
De manière avantageuse, la composition lubrifiante utilisée selon l'invention comprend au moins 50 % en masse d'huiles de base par rapport à la masse totale de la composition.Advantageously, the lubricating composition used according to the invention comprises at least 50% by mass of base oils relative to the total mass of the composition.
De manière plus avantageuse, la composition lubrifiante utilisée 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.More advantageously, the lubricating composition used 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.
De manière plus particulièrement avantageuse, la composition lubrifiante utilisée selon l'invention comprend de 60 à 99,5% en masse d'huiles de base, de préférence de 70 à 99,5 % en masse d'huiles de base, par rapport à la masse totale de la composition, de préférence de 70 à 98%.More particularly advantageously, the lubricating composition used according to the invention comprises from 60 to 99.5% by mass of base oils, preferably from 70 to 99.5% by mass of base oils, relative to the total mass of the composition, preferably from 70 to 98%.
De nombreux additifs peuvent être utilisés pour cette composition lubrifiante utilisée selon l'invention.Numerous additives can be used for this lubricating composition used according to the invention.
Les additifs préférés pour la composition lubrifiante utilisée selon l'invention sont choisis parmi les modificateurs de frottements, les détergents, les additifs anti-usure, les additifs extrême-pression, les améliorants de l'indice de viscosité, les dispersants, les antioxydants, les améliorants du point d'écoulement, les anti-mousse, les épaississants et leurs mélanges.The preferred additives for the lubricating composition used according to the invention are chosen from friction modifiers, detergents, anti-wear additives, extreme pressure additives, viscosity index improvers, dispersants, antioxidants, pour point improvers, defoamers, thickeners and mixtures thereof.
De manière préférée, la composition lubrifiante utilisée selon l'invention comprend au moins un additif anti-usure, au moins un additif extrême pression ou leurs mélanges. 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)(OR2)(OR3))2, dans laquelle R2 et R3, 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.Preferably, the lubricating composition used according to the invention comprises at least one anti-wear additive, at least one extreme pressure additive or mixtures thereof. Anti-wear additives and extreme pressure additives protect friction surfaces by forming a protective film adsorbed on these surfaces. There are a wide variety of anti-wear additives. Preferably, for the lubricating composition according to the invention, the anti-wear additives are chosen from phospho-sulphur additives such as metal alkylthiophosphates, in particular zinc alkylthiophosphates, and more specifically zinc dialkyldithiophosphates or ZnDTP. The preferred compounds are of formula Zn((SP(S)(OR 2 )(OR 3 )) 2 , in which R 2 and R 3 , which are identical or different, independently represent an alkyl group, preferably an alkyl group comprising from 1 to 18 carbon atoms.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 for the catalytic systems of automobiles because these additives are ash generators. These effects can be minimized by partially replacing the amine phosphates with additives that do not provide phosphorus, such as, for example, polysulphides, in particular sulphur-containing olefins. Advantageously, the lubricating composition according to the 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 ifying, anti-wear additives and extreme pressure additives.
De manière avantageuse, la composition lubrifiante utilisée 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 used according to the invention may comprise at least one friction modifier additive. The friction modifier additive can be selected from a compound providing metallic elements and an ash-free compound. Among the compounds providing metallic elements, mention may be made of complexes of transition metals such as Mo, Sb, Sn, Fe, Cu, Zn, the ligands of which may be hydrocarbon compounds comprising oxygen, nitrogen, sulfur or phosphorus. Ash-free friction modifier additives are generally of organic origin and may be selected from monoesters of fatty acids 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. Of advantageously, the lubricating composition according to the invention may 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 to 2% by mass relative to the total mass of the lubricating composition, of friction modifier additive.
De manière avantageuse, la composition lubrifiante utilisée 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 NR4R5R6 dans laquelle R4 représente un groupement aliphatique ou un groupement aromatique, éventuellement substitué, R5 représente un groupement aromatique, éventuellement substitué, R6 représente un atome d'hydrogène, un groupement alkyle, un groupement aryle ou un groupement de formule R7S(O)zR8 dans laquelle R7 représente un groupement alkylène ou un groupement alkénylène, R8 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 sulphonates, 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 used according to the invention may 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 in particular result in the formation of deposits, in the presence of sludge or in an increase in the viscosity of the lubricating composition. Antioxidant additives act in particular as free radical inhibitors or hydroperoxide destroyers. Among the antioxidant additives commonly employed, mention may be made of antioxidant additives of the phenolic type, antioxidant additives of the amine type, phosphosulfur antioxidant additives. Some of these antioxidant additives, for example phosphosulfur antioxidant additives, can be ash generators. The phenolic antioxidant additives may be ash-free or may be in the form of neutral or basic metal salts. The antioxidant additives may 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 to the carbon carrying the alcohol function is substituted by at least one C 1 -C 10 alkyl group, preferably a C 1 -C 6 alkyl group, preferably a C 4 alkyl group, preferably by the ter-butyl group. Amino compounds are another class of antioxidant additives that can be used, possibly in combination with phenolic antioxidant additives. Examples of amino compounds are aromatic amines, for example aromatic amines of formula NR 4 R 5 R 6 in which R 4 represents an aliphatic group or an optionally substituted aromatic group, R 5 represents an optionally substituted aromatic group, R 6 represents a hydrogen atom, an alkyl group, an aryl group or a group of formula R 7 S(O) z R 8 in which R 7 represents an alkylene group or an alkenylene group, R 8 represents an alkyl group, a alkenyl group or an aryl group and z represents 0, 1 or 2. Sulfurized alkyl phenols or their alkali metal and alkaline earth metal salts can also be used as antioxidant additives. Another class of antioxidant additives are compounds copper compounds, for example copper thio- or dithio-phosphates, salts of copper and of carboxylic acids, dithiocarbamates, sulphonates, phenates, copper acetylacetonates. Copper I and II salts, succinic acid or anhydride salts can also be used. The lubricating composition according to the invention may contain all types of antioxidant additives known to those skilled in the art. Advantageously, the lubricating composition comprises at least one ash-free antioxidant additive. Also advantageously, the lubricating composition according to the invention comprises from 0.5 to 2% by weight relative to the total mass of the composition, of at least one antioxidant additive.
La composition lubrifiante utilisée 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 stœchiométrique 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 0,5 à 4 % en poids d'additif détergent par rapport à la masse totale de la composition lubrifiante.The lubricating composition used 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 secondary 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. 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, sulfonates, salicylates, naphthenates, as well as phenate salts. The alkali and alkaline-earth metals are preferably calcium, magnesium, sodium or barium. These metallic salts generally comprise the metal in a stoichiometric quantity or else in excess, therefore in a quantity greater than the stoichiometric quantity. These are then overbased detergent additives; the excess metal providing the overbased character to the detergent additive is then generally in the form of an oil-insoluble metal salt, for example a carbonate, a hydroxide, an oxalate, an acetate, a glutamate, preferentially a carbonate . Advantageously, the lubricating composition according to the invention may comprise from 0.5 to 4% by weight of detergent additive relative to the total mass of the lubricating composition.
De manière également avantageuse, la composition lubrifiante selon l'invention peut également comprendre au moins un additif abaisseur de point d'écoulement. En ralentissant la formation de cristaux de paraffine, les additifs abaisseurs de point d'écoulement améliorent généralement le comportement à froid de la composition lubrifiante selon l'invention. Comme exemple d'additifs abaisseurs de point d'écoulement, on peut citer les polyméthacrylates d'alkyle, les polyacrylates, les polyarylamides, les polyalkylphénols, les polyalkylnaphtalènes, les polystyrènes alkylés.Also advantageously, the lubricating composition according to the invention may also comprise at least one pour point depressant additive. By slowing down the formation of paraffin crystals, the pour point depressant additives generally improve the cold behavior of the lubricating composition according to the invention. As an example of pour point depressant additives, mention may be made of polyalkyl methacrylates, polyacrylates, polyarylamides, polyalkylphenols, polyalkylnaphthalenes, alkylated polystyrenes.
De manière avantageuse, la composition lubrifiante utilisée 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 used 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 may comprise from 0.2 to 10% by mass of dispersing agent relative to the total mass of the lubricating composition.
La composition lubrifiante utilisée selon la présente invention peut également comprendre au moins un additif améliorant l'indice de viscosité. Comme exemples d'additifs 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 polyacrylates, les polyméthacrylates (PMA) ou encore les copolymères oléfines, notamment les copolymères ethylène/propylène.The lubricating composition used according to the present invention may also comprise at least one viscosity index improver additive. Examples of additives improving the viscosity index include polymer esters, homopolymers or copolymers, hydrogenated or non-hydrogenated, of styrene, butadiene and isoprene, polyacrylates, polymethacrylates (PMA) or alternatively olefin copolymers, in particular ethylene/propylene copolymers.
La composition lubrifiante utilisée selon l'invention peut se présenter sous différentes formes. La composition lubrifiante selon l'invention peut notamment être une composition anhydre. De manière préférée, cette composition lubrifiante n'est pas une émulsion.The lubricating composition used according to the invention can be in different forms. The lubricating composition according to the invention can in particular be an anhydrous composition. Preferably, this lubricating composition is not an emulsion.
De préférence, l'huile de base de la composition utilisée selon l'invention est choisie parmi les huiles de groupe II et les huiles de groupe III telles que définies ci-dessus.Preferably, the base oil of the composition used according to the invention is chosen from group II oils and group III oils as defined above.
De préférence, l'huile de base de la composition utilisée selon l'invention comprend au moins une polyalphaoléfine (PAO) telle que décrite ci-dessus, notamment un oligomère d'alcène dont la viscosité finale est comprise entre 2 et 500 cSt.Preferably, the base oil of the composition used according to the invention comprises at least one polyalphaolefin (PAO) as described above, in particular an alkene oligomer whose final viscosity is between 2 and 500 cSt.
De préférence, l'huile de base de la composition utilisée selon l'invention est choisie parmi les huiles de groupe II et les huiles de groupe III telles que définies ci-dessus et au moins une polyalphaoléfine (PAO) telle que décrite ci-dessus.Preferably, the base oil of the composition used according to the invention is chosen from group II oils and group III oils as defined above and at least one polyalphaolefin (PAO) as described above .
De façon avantageuse, la composition lubrifiante utilisée selon l'invention présente une excellente stabilité au cisaillement. La stabilité au cisaillement peut notamment être déterminée à partir des viscosités cinématiques avant et après un processus de cisaillement selon le test KRL 20h selon la norme CEC-L-45-A-99 (2014). Avantageusement la perte de cisaillement est inférieure à 5%.Advantageously, the lubricating composition used according to the invention has excellent shear stability. The shear stability can in particular be determined from the kinematic viscosities before and after a shearing process according to the KRL 20h test according to standard CEC-L-45-A-99 (2014). Advantageously the shear loss is less than 5%.
Da façon avantageuse, la composition lubrifiante utilisée selon l'invention présente des faibles coefficients de traction. Le coefficient de traction est déterminé par machine MTM (Mini Traction Machine) vendu par PCS instrument. Les conditions opératoires regardées sont une température de 40°C sous une charge de 75N et une vitesse du disque de 1m/s pour un SRR (rapport glissement/laminage ou sliding-rolling ratio en anglais) de 20%.Advantageously, the lubricating composition used according to the invention has low coefficients of traction. Traction coefficient is determined by MTM machine (Mini Traction Machine) sold by PCS instrument. The operating conditions considered are a temperature of 40° C. under a load of 75 N and a disc speed of 1 m/s for an SRR (sliding-rolling ratio) of 20%.
De façon avantageuse, la composition lubrifiante utilisée selon l'invention présente une viscosité stable à la température.Advantageously, the lubricating composition used according to the invention has a temperature-stable viscosity.
De façon avantageuse, la composition lubrifiante utilisée selon l'invention permet un gain en Fuel Eco.Advantageously, the lubricating composition used according to the invention allows a gain in Fuel Eco.
De façon avantageuse, la composition lubrifiante utilisée selon l'invention conserve des propriétés anti-usure satisfaisantes.Advantageously, the lubricating composition used according to the invention retains satisfactory anti-wear properties.
De façon avantageuse, la composition lubrifiante utilisée selon l'invention permet un gain de performances sur les propriétés à froid.Advantageously, the lubricating composition used according to the invention allows a gain in performance on cold properties.
La composition lubrifiante utilisée selon l'invention est particulièrement utile pour la lubrification des organes de transmissions de véhicules automobiles, notamment transmission pour véhicule léger ou lourds, par exemple boîtes de vitesse, ponts, de préférence boîte de vitesse manuelle et ponts poids lourds ; ou pour les engrenages, notamment engrenages industriels. Ainsi, la présente invention concerne l'utilisation d'une composition lubrifiante selon l'invention pour la lubrification des organes de transmissions de véhicules automobiles, notamment transmission pour véhicule léger ou lourds, par exemple boîtes de vitesse, ponts, de préférence boîte de vitesse manuelle et ponts poids lourds ; ou pour les engrenages, notamment engrenages industriels. De préférence, dans le cadre des lubrifiants pour organes de transmission tout type de grade 70W et 75W conviennent.The lubricating composition used according to the invention is particularly useful for lubricating the transmission components of motor vehicles, in particular transmission for light or heavy vehicles, for example gearboxes, axles, preferably manual gearbox and axles for heavy goods vehicles; or for gears, in particular industrial gears. Thus, the present invention relates to the use of a lubricating composition according to the invention for the lubrication of motor vehicle transmission components, in particular transmission for light or heavy vehicles, for example gearboxes, axles, preferably gearbox manual and truck axles; or for gears, in particular industrial gears. Preferably, in the context of lubricants for transmission components, any type of 70W and 75W grade is suitable.
La composition lubrifiante utilisée selon la présente invention peut également être utilisée pour la lubrification de moteur, notamment de moteur de véhicule automobile et de préférence pour des grades SAE 0W-8, 0W-12 et 0W-16.The lubricating composition used according to the present invention can also be used for lubricating engines, in particular motor vehicle engines and preferably for SAE 0W-8, 0W-12 and 0W-16 grades.
L'invention concerne également l'utilisation de la composition lubrifiante selon l'invention pour réduire le coefficient de traction d'une huile pour moteur de véhicule.The invention also relates to the use of the lubricating composition according to the invention for reducing the traction coefficient of a vehicle engine oil.
L'invention concerne également l'utilisation de la composition lubrifiante selon l'invention pour réduire la consommation de carburant d'un véhicule équipé d'un pont ou d'une boîte de vitesses lubrifiés au moyen de cette composition.The invention also relates to the use of the lubricating composition according to the invention for reducing the fuel consumption of a vehicle equipped with an axle or of a gearbox lubricated with this composition.
L'invention concerne également l'utilisation de la composition lubrifiante selon l'invention pour réduire la consommation de carburant d'un véhicule équipé d'une transmission lubrifiée au moyen de cette composition.The invention also relates to the use of the lubricating composition according to the invention for reducing the fuel consumption of a vehicle equipped with a transmission lubricated by means of this composition.
L'invention concerne également l'utilisation de la composition lubrifiante selon l'invention pour réduire le coefficient de traction d'une huile de transmission, en particulier d'une huile de boîte de vitesses ou d'une huile de pont.The invention also relates to the use of the lubricating composition according to the invention for reducing the coefficient of traction of a transmission oil, in particular of a gearbox oil or of an axle oil.
La présente demande concerne également l'utilisation d'au moins un PAG tel que défini ci-dessus dans une composition lubrifiante, notamment pour organes de transmissions de véhicules automobiles ou engrenages, notamment engrenages industriels, pour augmenter l'indice de viscosité de la composition lubrifiante tout en apportant une stabilité de la composition lubrifiante au cisaillement.The present application also relates to the use of at least one PAG as defined above in a lubricating composition, in particular for motor vehicle transmission components or gears, in particular industrial gears, to increase the viscosity index of the composition. lubricating while providing stability of the lubricating composition to shear.
La présente demande va maintenant être décrite à l'aide d'exemples non limitatifs.The present application will now be described using non-limiting examples.
Les compositions lubrifiantes ont été formulées avec des PAG de l'invention de façon à avoir une viscosité cinématique à 100°C d'environ 7,5 mm2/s, ces compositions sont décrites dans le tableau 2 ci-dessous.
Les compositions comparatives suivantes ont été formulées de façon à avoir une viscosité cinématique à 100°C d'environ 7,5 mm2/s, ces compositions sont décrites dans le tableau 3 ci-dessous. L'huile de base et les additifs sont identiques à ceux des compositions CL2 et CL3.
Les performances des compositions lubrifiantes CL2, CL3, CC1 et CC2 ont été déterminées selon les méthodes suivantes :
- Les propriétés à froid par mesure Brookfield à -40°C selon la norme ASTM D2983 (2015),
- Usure selon la norme ISO14635-3 (2005),
- La stabilité au cisaillement déterminée par la perte de viscosité de la composition lubrifiante après un processus de cisaillement KRL 20h selon la norme CEC-L-45-A-99 (2014),
- La stabilité thermo-oxydative mesurée par DKA selon la norme CEC L-48-A-00 (2014),
- L'indice de viscosité selon la norme ISO 2909 (2014).
- Cold properties by Brookfield measurement at -40°C according to ASTM D2983 (2015),
- Wear according to ISO14635-3 (2005),
- The shear stability determined by the loss of viscosity of the lubricating composition after a 20h KRL shearing process according to CEC-L-45-A-99 (2014),
- Thermo-oxidative stability measured by DKA according to standard CEC L-48-A-00 (2014),
- Viscosity index according to ISO 2909 (2014).
Il apparait que la dépendance viscosité température (VI) est améliorée par rapport à la référence CC2 pour les PAG de viscosité suffisante.It appears that the viscosity temperature dependence (VI) is improved compared to the CC2 reference for PAGs of sufficient viscosity.
Ces résultats montrent également que les compositions selon l'invention présentent une bonne viscosité brookfield, améliorée par rapport à la référence CC1.These results also show that the compositions according to the invention have a good Brookfield viscosity, improved compared to the reference CC1.
La stabilité au cisaillement est excellente. On voit que la solution de l'invention bien que plus visqueuse se cisaille moins que la viscobase 11-522® au cours de cet essai, malgré la fait que les PAG testés soient plus visqueux que le viscobase 11-522®.Shear stability is excellent. It can be seen that the solution of the invention, although more viscous, shears less than viscobase 11-522® during this test, despite the fact that the PAGs tested are more viscous than viscobase 11-522® .
Afin d'évaluer le potentiel Fuel Economy de notre solution, des compositions lubrifiantes avec différents améliorants de l'indice de viscosité ont été réalisées et sont décrites dans le tableau 5 ci-dessous. Ces compositions ont été réalisées dans le but d'avoir une viscosité cinématique à 100°C similaire.In order to evaluate the Fuel Economy potential of our solution, lubricating compositions with different viscosity index improvers were produced and are described in Table 5 below. These compositions were made with the aim of having a similar kinematic viscosity at 100° C.
L'huile de base et les additifs sont identiques à ceux des compositions ci-dessus.
Le coefficient de traction (COT) a été mesuré à l'aide du tribometre MTM de PCS instrument. Les conditions de mesure étaient 75N de charge et la vitesse du disque était de 1m/s pour une température évaluée (40°C) et un SRR de 20%. Les résultats sont présentés dans le Tableau 6 ci-dessous.
Ainsi, les compositions lubrifiantes selon l'invention CL4 et CL5 permettent d'abaisser le coefficient de traction, la reproductibilité de l'essai étant de l'ordre de 3%.Thus, the lubricating compositions according to the invention CL4 and CL5 make it possible to lower the coefficient of traction, the reproducibility of the test being of the order of 3%.
Cette diminution du coefficient de traction est particulièrement intéressante en ce qu'elle entraîne une augmentation du gain en fuel Eco.This reduction in the coefficient of traction is particularly advantageous in that it leads to an increase in the gain in Eco fuel.
La composition CL6 et la composition comparative CC4 ci-dessous ont été utilisées pour cette évaluation.
- Le modificateur de frottement est un composé conventionnel d'organomolybdène disponible commercialement auprès de la société Adeka sous le nom commercial « Sakuralube®»,
- Le paquet d'additifs 1 conventionnel comprend un dispersant, des détergents et un anti-usure.
- The friction modifier is a conventional organomolybdenum compound commercially available from Adeka under the trade name “ Sakuralube® ”,
- Conventional additive package 1 includes dispersant, detergents and anti-wear.
La procédure du test est la suivante :
Caractérisation des compositions selon l'invention et comparatives en termes d'économie de carburant (« Fuel-Eco ») The test procedure is as follows:
Characterization of the compositions according to the invention and comparisons in terms of fuel economy (“Fuel-Eco”)
Le test est réalisé à l'aide d'un moteur Honda L13-B, dont la puissance est de 81 kW à 5 500 tr/min, entraîné par un générateur électrique permettant d'imposer une vitesse de rotation comprise entre 650 et 5 000 tours/min tandis qu'un capteur de couple permet de mesurer le couple de frottement généré par le mouvement des pièces dans le moteur. Le couple de frottement induit par le lubrifiant d'essai est comparé pour chaque régime et chaque température au couple induit par la composition lubrifiante de référence (SAE 0W8), ici CC4.The test is carried out using a Honda L13-B engine, whose power is 81 kW at 5,500 rpm, driven by an electric generator making it possible to impose a speed of rotation between 650 and 5,000 rpm while a torque sensor measures the frictional torque generated by the movement of the parts in the engine. The friction torque induced by the test lubricant is compared for each speed and each temperature with the torque induced by the reference lubricating composition (SAE 0W8), here CC4.
Les conditions de ce test sont les suivantes.The conditions of this test are as follows.
Les essais sont réalisés selon la séquence suivante :
- rinçage du moteur avec une huile de rinçage comprenant des additifs détergent, suivi d'un rinçage avec une composition lubrifiante de référence ;
- mesure du couple de friction aux quatre températures différentes indiquées ci-dessous sur le moteur mettant en œuvre la composition lubrifiante de référence ;
- rinçage du moteur avec une huile de rinçage comprenant des additifs détergent, suivi d'un rinçage avec une composition lubrifiante à évaluer ;
- mesure du couple de friction à quatre températures différentes sur le moteur mettant en œuvre la composition lubrifiante à évaluer ;
- rinçage du moteur avec une huile de rinçage comprenant des additifs détergent, suivi d'un rinçage avec la composition lubrifiante de référence ; et
- mesure du couple de friction aux quatre températures différentes indiquées ci-dessous sur le moteur mettant en œuvre la composition lubrifiante de référence.
- rinsing the engine with a rinsing oil comprising detergent additives, followed by rinsing with a reference lubricating composition;
- measurement of the friction torque at the four different temperatures indicated below on the engine implementing the reference lubricating composition;
- flushing the engine with a flushing oil comprising detergent additives, followed by a flushing with a lubricating composition to be evaluated;
- measurement of the friction torque at four different temperatures on the engine implementing the lubricating composition to be evaluated;
- rinsing the engine with a rinsing oil comprising detergent additives, followed by rinsing with the reference lubricating composition; and
- measurement of the friction torque at the four different temperatures indicated below on the engine implementing the reference lubricating composition.
Les plages de régime, la variation du régime ainsi que la température ont été choisies pour couvrir, de la manière la plus représentative possible, les points du cycle certifié NEDC.The rpm ranges, the rpm variation and the temperature have been chosen to cover, in the most representative way possible, the points of the NEDC-certified cycle.
Les instructions mises en œuvre sont :
- Température de l'eau en sortie du moteur : 35°C/50°C/80°C/90°C ± 0,5°C,
- Rampe de température de l'huile : 35°C/50°C/80°C/90°C ± 0,5°C.
- Engine outlet water temperature: 35°C/50°C/80°C/90°C ± 0.5°C,
- Oil temperature ramp: 35°C/50°C/80°C/90°C ± 0.5°C.
Le gain en friction est évalué pour chaque composition lubrifiante (CL) en fonction de la température et de la vitesse du moteur et en comparaison de la friction de la composition lubrifiante de référence.The gain in friction is evaluated for each lubricating composition (CL) as a function of the temperature and the speed of the engine and in comparison with the friction of the reference lubricating composition.
Les résultats du test de « Fuel Eco » sont résumés dans le tableau suivant, et indiquent les moyennes en pourcentage des gains en friction pour chaque composition à une température donnée sur une plage de régime allant de 650 tr/min à 5 000 tr/min par rapport au résultats « Fuel Eco » obtenus avec la composition de référence CC4 :
Ces résultats démontrent que les gains en friction pour la composition CL6 selon l'invention sont bien plus importants que les gains en friction obtenus avec la composition de référence CC4.These results demonstrate that the gains in friction for the composition CL6 according to the invention are much greater than the gains in friction obtained with the reference composition CC4.
Il est entendu que plus les gains en friction sont importants, plus l'économie de carburant ou Fuel Eco est importante. Ceci implique donc que les compositions selon l'invention permettent d'augmenter le Fuel Eco contrairement aux compositions ne comprenant pas de PAG selon l'invention.It is understood that the greater the gains in friction, the greater the fuel economy or Fuel Eco. This therefore implies that the compositions according to the invention make it possible to increase the Fuel Eco, unlike the compositions not comprising any PAG according to the invention.
Claims (9)
- Use of a lubricant composition comprising:- at least one base oil;- at least one polyalkylene glycol (PAG) comprising at least 50% by weight of butylene oxide units and having a kinematic viscosity measured at 100°C according to ASTM D445 (2015) greater than or equal to 50 mm2/s, a kinematic viscosity measured at 40°C according to ASTM D445 (2015) greater than or equal to 1000 mm2/s, and a viscosity index measured according to ASTM D2270 (2012) greater than or equal to 180,
for reducing the traction coefficient during the lubrication of motor vehicle transmission members, including transmission for light or heavy vehicles, for example gearboxes, differentials, preferably manual gearbox and heavy vehicle differentials; or for industrial gears. - Use according to claim 1, wherein the PAG comprises from 25 to 300 moles of butylene oxide units, preferably from 50 to 200 moles.
- Use according to claim 1 or 2, wherein the PAG comprises an O/C ratio (oxygen atom/carbon atom) by weigh between 0.29 and 0.38, preferably between 0.29 and 0.35.
- Use according to any of claims 1 to 3, wherein the PAG comprises at least 80% by weight of butylene oxide units.
- Use according to any of the preceding claims, wherein the alkylene oxide units of PAG are solely butylene oxide units.
- Use according to any of the preceding claims, wherein the PAG has a kinematic viscosity measured at 100°C according to ASTM D445 (2015) between 50 and 500 mm2/s, a kinematic viscosity measured at 40°C according to ASTM D445 (2015) of between 1000 and 4500 mm2/s, and a viscosity index measured according to ASTM D2270 (2012) between 180 and 300.
- Use according to any of the preceding claims, comprising at most 30% by weight of PAG, preferably from 6% to 30%, more preferably from 9% to 16%.
- Use according to any of the preceding claims, wherein the PAG is obtained by reaction with butylene oxides of one or more polyols comprising 2 to 12 carbon atoms, preferably diol.
- Use according to any of the preceding claims, wherein the base oil is selected from Group II oils and Group III oils.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1660274A FR3057878B1 (en) | 2016-10-24 | 2016-10-24 | LUBRICANT COMPOSITION |
| PCT/EP2017/076958 WO2018077780A1 (en) | 2016-10-24 | 2017-10-23 | Lubricant composition |
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| EP3529341A1 EP3529341A1 (en) | 2019-08-28 |
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| US (1) | US11499115B2 (en) |
| EP (1) | EP3529341B1 (en) |
| JP (1) | JP2019532157A (en) |
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|---|---|---|---|---|
| EP0376236A1 (en) * | 1988-12-29 | 1990-07-04 | BASF Aktiengesellschaft | Use of 1,2-butylene oxide compounds added to amines as lubricants, and lubricants containing the same |
| US20150119303A1 (en) * | 2012-05-04 | 2015-04-30 | Total Marketing Services | Engine lubricant composition |
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| JP5815520B2 (en) | 2009-07-23 | 2015-11-17 | ダウ グローバル テクノロジーズ エルエルシー | Polyalkylene glycols useful as lubricating additives for Group I-IV hydrocarbon oils |
| US8455415B2 (en) | 2009-10-23 | 2013-06-04 | Exxonmobil Research And Engineering Company | Poly(alpha-olefin/alkylene glycol) copolymer, process for making, and a lubricant formulation therefor |
| CN102959066A (en) | 2010-06-25 | 2013-03-06 | 吉坤日矿日石能源株式会社 | Hydraulic oil composition |
| FR2968011B1 (en) * | 2010-11-26 | 2014-02-21 | Total Raffinage Marketing | LUBRICATING COMPOSITION FOR ENGINE |
| EP2395068A1 (en) * | 2011-06-14 | 2011-12-14 | Shell Internationale Research Maatschappij B.V. | Lubricating composition |
| JP5731306B2 (en) * | 2011-07-21 | 2015-06-10 | 昭和シェル石油株式会社 | Two-phase lubricating oil composition |
| BR112014009157B1 (en) | 2011-10-28 | 2020-11-10 | Dow Global Technologies Llc | lubricant composition and method for preparing a lubricant composition |
| JP2014534316A (en) | 2011-11-01 | 2014-12-18 | ダウ グローバル テクノロジーズ エルエルシー | Oil-soluble polyalkylene glycol lubricating oil composition |
| BR112015009036A2 (en) | 2012-10-25 | 2017-07-04 | Dow Global Technologies Llc | lubricant composition |
| BR112015011371A2 (en) * | 2012-12-12 | 2017-07-11 | Dow Global Technologies Llc | concentrated metallurgical fluid and metallurgical process |
| ES2745383T3 (en) * | 2013-03-11 | 2020-03-02 | Basf Se | Use of polyalkoxylates in lubricating compositions |
| WO2015069509A1 (en) | 2013-11-07 | 2015-05-14 | Dow Global Technologies Llc | Demulsifiers for oil soluble polyalkylene glycol lubricants |
| CN104403741B (en) * | 2014-10-17 | 2017-03-29 | 中国石油化工股份有限公司 | A kind of worm and gear lubricant oil composite and preparation method thereof |
| JP6478202B2 (en) * | 2014-11-07 | 2019-03-06 | 出光興産株式会社 | Lubricating oil composition for refrigerator and refrigerator |
| CN104945613B (en) | 2015-06-01 | 2018-03-20 | 东南大学 | A kind of preparation method of the polyether oil base oil based on oxetane monomers synthesis |
-
2016
- 2016-10-24 FR FR1660274A patent/FR3057878B1/en active Active
-
2017
- 2017-10-23 BR BR112019007674A patent/BR112019007674A2/en not_active Application Discontinuation
- 2017-10-23 CN CN201780065684.5A patent/CN109863234A/en active Pending
- 2017-10-23 KR KR1020197011908A patent/KR102506181B1/en active Active
- 2017-10-23 WO PCT/EP2017/076958 patent/WO2018077780A1/en active Application Filing
- 2017-10-23 JP JP2019521476A patent/JP2019532157A/en active Pending
- 2017-10-23 EP EP17787408.8A patent/EP3529341B1/en active Active
- 2017-10-23 US US16/344,276 patent/US11499115B2/en active Active
- 2017-10-23 MX MX2019004714A patent/MX2019004714A/en unknown
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| EP0376236A1 (en) * | 1988-12-29 | 1990-07-04 | BASF Aktiengesellschaft | Use of 1,2-butylene oxide compounds added to amines as lubricants, and lubricants containing the same |
| US5145948A (en) * | 1988-12-29 | 1992-09-08 | Knut Oppenlaender | Preparation of highly viscous adducts of butylene oxide with alcohols |
| US20150119303A1 (en) * | 2012-05-04 | 2015-04-30 | Total Marketing Services | Engine lubricant composition |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109863234A (en) | 2019-06-07 |
| US20190270945A1 (en) | 2019-09-05 |
| MX2019004714A (en) | 2019-08-05 |
| BR112019007674A2 (en) | 2019-07-02 |
| FR3057878A1 (en) | 2018-04-27 |
| JP2019532157A (en) | 2019-11-07 |
| WO2018077780A1 (en) | 2018-05-03 |
| FR3057878B1 (en) | 2020-10-09 |
| KR102506181B1 (en) | 2023-03-08 |
| US11499115B2 (en) | 2022-11-15 |
| KR20190068556A (en) | 2019-06-18 |
| EP3529341A1 (en) | 2019-08-28 |
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