EP3481927A1 - Lubricant composition for a gas engine - Google Patents
Lubricant composition for a gas engineInfo
- Publication number
- EP3481927A1 EP3481927A1 EP17735149.1A EP17735149A EP3481927A1 EP 3481927 A1 EP3481927 A1 EP 3481927A1 EP 17735149 A EP17735149 A EP 17735149A EP 3481927 A1 EP3481927 A1 EP 3481927A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ester
- polyol
- carbon atoms
- lubricating
- base oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 128
- 239000000314 lubricant Substances 0.000 title abstract description 59
- 230000001050 lubricating effect Effects 0.000 claims abstract description 73
- 229920005862 polyol Polymers 0.000 claims abstract description 56
- -1 polyol esters Chemical class 0.000 claims abstract description 48
- 239000002199 base oil Substances 0.000 claims abstract description 38
- 150000002148 esters Chemical class 0.000 claims abstract description 32
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 23
- 239000011707 mineral Substances 0.000 claims abstract description 23
- 125000004432 carbon atom Chemical group C* 0.000 claims description 64
- 150000002763 monocarboxylic acids Chemical class 0.000 claims description 32
- 229920006395 saturated elastomer Polymers 0.000 claims description 27
- 150000001735 carboxylic acids Chemical class 0.000 claims description 24
- 150000003077 polyols Chemical class 0.000 claims description 20
- 238000005886 esterification reaction Methods 0.000 claims description 9
- 150000001991 dicarboxylic acids Chemical class 0.000 claims description 6
- 229920002367 Polyisobutene Polymers 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 38
- 239000000654 additive Substances 0.000 description 28
- 230000003647 oxidation Effects 0.000 description 21
- 238000007254 oxidation reaction Methods 0.000 description 21
- 239000003963 antioxidant agent Substances 0.000 description 19
- 238000011156 evaluation Methods 0.000 description 18
- 239000003599 detergent Substances 0.000 description 14
- 239000008186 active pharmaceutical agent Substances 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000003921 oil Substances 0.000 description 9
- 230000000996 additive effect Effects 0.000 description 8
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 8
- 125000000217 alkyl group Chemical group 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 6
- 239000007866 anti-wear additive Substances 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- 239000002270 dispersing agent Substances 0.000 description 6
- 239000011701 zinc Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical class O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 description 5
- 229910052725 zinc Inorganic materials 0.000 description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 4
- 150000001412 amines Chemical class 0.000 description 4
- 235000006708 antioxidants Nutrition 0.000 description 4
- 125000003118 aryl group Chemical group 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- HNRMPXKDFBEGFZ-UHFFFAOYSA-N ethyl trimethyl methane Natural products CCC(C)(C)C HNRMPXKDFBEGFZ-UHFFFAOYSA-N 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 4
- 150000002989 phenols Chemical class 0.000 description 4
- 229920013639 polyalphaolefin Polymers 0.000 description 4
- 229920000193 polymethacrylate Polymers 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000002562 thickening agent Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000005069 Extreme pressure additive Substances 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- BTHAQRDGBHUQMR-UHFFFAOYSA-N [S]P(=O)=O Chemical compound [S]P(=O)=O BTHAQRDGBHUQMR-UHFFFAOYSA-N 0.000 description 3
- 230000003078 antioxidant effect Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000000994 depressogenic effect Effects 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 239000003607 modifier Substances 0.000 description 3
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- XDOFQFKRPWOURC-UHFFFAOYSA-N 16-methylheptadecanoic acid Chemical compound CC(C)CCCCCCCCCCCCCCC(O)=O XDOFQFKRPWOURC-UHFFFAOYSA-N 0.000 description 2
- TXBCBTDQIULDIA-UHFFFAOYSA-N 2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)CO TXBCBTDQIULDIA-UHFFFAOYSA-N 0.000 description 2
- 101710083129 50S ribosomal protein L10, chloroplastic Proteins 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
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- 150000004982 aromatic amines Chemical class 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical group C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 2
- 150000002118 epoxides Chemical class 0.000 description 2
- FBUKVWPVBMHYJY-UHFFFAOYSA-N nonanoic acid Chemical compound CCCCCCCCC(O)=O FBUKVWPVBMHYJY-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
- BPILDHPJSYVNAF-UHFFFAOYSA-M sodium;diiodomethanesulfonate Chemical compound [Na+].[O-]S(=O)(=O)C(I)I BPILDHPJSYVNAF-UHFFFAOYSA-M 0.000 description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 2
- 229960002317 succinimide Drugs 0.000 description 2
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 150000005691 triesters Chemical class 0.000 description 2
- 239000002966 varnish Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 1
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-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
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- 239000005749 Copper compound Substances 0.000 description 1
- 229920000089 Cyclic olefin copolymer Polymers 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
- 239000005642 Oleic acid Substances 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 1
- 239000005643 Pelargonic acid Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 125000003158 alcohol group Chemical group 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- 125000004450 alkenylene group Chemical group 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 150000001449 anionic compounds Chemical class 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- JXLHNMVSKXFWAO-UHFFFAOYSA-N azane;7-fluoro-2,1,3-benzoxadiazole-4-sulfonic acid Chemical compound N.OS(=O)(=O)C1=CC=C(F)C2=NON=C12 JXLHNMVSKXFWAO-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 229910052728 basic metal Inorganic materials 0.000 description 1
- ZMRQTIAUOLVKOX-UHFFFAOYSA-L calcium;diphenoxide Chemical compound [Ca+2].[O-]C1=CC=CC=C1.[O-]C1=CC=CC=C1 ZMRQTIAUOLVKOX-UHFFFAOYSA-L 0.000 description 1
- 150000001734 carboxylic acid salts Chemical class 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 150000001880 copper compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 150000005690 diesters Chemical class 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
- 239000000839 emulsion Substances 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000009472 formulation Methods 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
- 150000002432 hydroperoxides Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-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
- 239000002480 mineral oil Substances 0.000 description 1
- 239000000178 monomer 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 group 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 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
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 150000003873 salicylate salts 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
- 239000008117 stearic acid Substances 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 150000003463 sulfur Chemical class 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
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
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
- C10M169/044—Mixtures of base-materials and additives the additives being a mixture of non-macromolecular and macromolecular compounds
-
- 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
- C10M111/02—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 non-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
- C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
- C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
- C10M129/68—Esters
- C10M129/74—Esters of polyhydroxy compounds
-
- 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
- C10M143/00—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation
- C10M143/06—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation containing butene
-
- 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
- C10M161/00—Lubricating compositions characterised by the additive being a mixture of a macromolecular compound and a non-macromolecular compound, each of these compounds being essential
-
- 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
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/003—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions used as base material
-
- 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
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen used as base material
-
- 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
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/102—Aliphatic fractions
- C10M2203/1025—Aliphatic fractions used as base material
-
- 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
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/026—Butene
-
- 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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/028—Overbased salts thereof
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/283—Esters of polyhydroxy compounds
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/283—Esters of polyhydroxy compounds
- C10M2207/2835—Esters of polyhydroxy compounds used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/30—Complex esters, i.e. compounds containing at leasst three esterified carboxyl groups and derived from the combination of at least three different types of the following five types of compounds: monohydroxyl compounds, polyhydroxy xompounds, monocarboxylic acids, polycarboxylic acids or hydroxy carboxylic acids
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
- C10M2209/084—Acrylate; Methacrylate
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/28—Amides; Imides
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
- C10M2219/046—Overbasedsulfonic acid salts
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/045—Metal containing thio derivatives
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/04—Detergent property or dispersant property
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/08—Resistance to extreme temperature
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/70—Soluble oils
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/25—Internal-combustion engines
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/25—Internal-combustion engines
- C10N2040/255—Gasoline engines
Definitions
- the present invention relates to the field of lubricants for gas engines, preferably for stationary gas engines.
- the present invention relates more particularly to the use of a lubricating composition comprising at least one mineral base oil and at least one ester chosen from polyol esters for lubricating a gas engine, preferably for a stationary gas engine.
- the present invention also relates to a method of lubricating a gas engine, preferably for a stationary gas engine.
- nitroxidation is meant oxidation by contact with nitrogen oxides (NOx).
- the lubricants then incorporated Group II base oils according to the API classification, making it possible to improve the resistance to oxidation.
- the use of these lubricants has resulted in the formation of high temperature (or varnish) deposition. It is the same for lubricants based on base oils of group III and group IV according to API classification.
- the invention provides a lubricating composition which makes it possible to provide a solution to all or part of the problems of lubricating compositions intended for the lubrication of gas engines, preferably stationary gas engines.
- the present invention therefore relates to the use of a lubricant composition comprising at least one mineral base oil and at least one ester chosen from polyol esters for lubricating a gas engine.
- the applicant has found that the combination of at least one mineral base oil and at least one ester chosen from polyol esters in a lubricating composition for a gas engine, preferably for a stationary gas engine, makes it possible to to improve the resistance to oxidation, especially to nitroxidation, of the lubricating composition.
- the lubricant compositions according to the invention have both good resistance to oxidation, especially to nitroxidation, while reducing or even eliminating the formation of deposits, especially at high temperature.
- the lubricant compositions according to the invention have good oxidation resistance properties, especially nitroxidation, and detergency once implemented in a gas engine and whose formulation is easy to implement.
- the lubricant compositions according to the invention have good oxidation resistance properties, especially nitroxidation, and detergency properties when implemented in a gas engine while being stable over time, in particular stable storage .
- the gas engine is a stationary gas engine.
- the mineral base oil is chosen from a Group II base oil or a Group III base oil according to the API classification, preferably a Group II bottom oil according to the classification. API.
- the lubricating composition comprises at least 50% by weight, preferably from 50% to 90% by weight, of mineral base oil relative to the total weight of the lubricating composition.
- the ester is chosen from saturated or unsaturated linear or branched polyol esters of carboxylic acids comprising at least 8 carbon atoms.
- the carboxylic acid is a saturated or unsaturated monocarboxylic acid, linear or branched.
- the carboxylic acid comprises from 8 to 20 carbon atoms, preferably from 8 to 18 carbon atoms.
- the polyol comprises at least 3 -OH groups, preferably 3 to 8 -OH groups.
- the polyol comprises from 3 to 10 carbon atoms.
- the polyol ester comprises a mixture of at least a first polyol ester and monocarboxylic acid as defined above and at least one second polyol ester and monocarboxylic acid as defined above and different from the first ester.
- the ester is obtained by esterification reaction between a polyol as defined above, at least a first monocarboxylic acid as defined above and at least a second carboxylic acid. selected from linear or branched, saturated or unsaturated dicarboxylic acids comprising at least 16 carbon atoms.
- the lubricating composition comprises at least 2% by weight, preferably at least 5% by weight, of polyol ester relative to the total weight of the lubricating composition. In another embodiment of the invention, the lubricating composition further comprises polyisobutylene.
- the invention also relates to the use of at least one mineral base oil as defined above and at least one ester chosen from the polyol esters as defined above in a lubricant composition for lubricating an engine. gas.
- the invention also relates to a method of lubricating a gas engine comprising contacting at least one mechanical part of the engine with a lubricant composition as defined above.
- the lubricating composition according to the invention comprises at least one mineral base oil.
- the mineral base oils used in the lubricating compositions according to the invention may be oils of mineral origins belonging to groups I, II or III according to the classes defined in the API classification (or their equivalents according to the ATIEL classification) (Table A ) or their mixtures. Content in the Index of
- the base oil is a Group II base oil or a Group III base oil according to the API classification.
- the base oil is a Group II base oil according to the API classification.
- the lubricating composition comprises at least 50%, preferably from 50% to 90%, more preferably from 60% to 90%, even more preferably from 65% to 90%, advantageously from 65% to 85% by weight of mineral base oil based on the total weight of the lubricant composition.
- the lubricating composition comprises at least 70%, preferably from 70% to 90%, more preferably from 75% to 90%, advantageously from 75% to 85% by weight of d mineral base oil with respect to the total weight of the lubricating composition.
- the lubricant composition according to the invention also comprises at least one ester chosen from polyol esters.
- polyol ester is meant any ester obtained by esterification of at least one carboxylic acid with at least one polyol.
- carboxylic acid according to the invention is meant monocarboxylic acids and polycarboxylic acids.
- the ester is chosen from esters of saturated or unsaturated, linear or branched polyols and carboxylic acids comprising at least 8 carbon atoms.
- the carboxylic acid is a saturated or unsaturated monocarboxylic acid, linear or branched.
- the carboxylic acid can thus be chosen from:
- the carboxylic acid comprises from 8 to 20 carbon atoms, preferably from 8 to 18 carbon atoms.
- the carboxylic acid comprises from 14 to 18 carbon atoms, preferably from 16 to 18 carbon atoms.
- the carboxylic acid comprises from 8 to 12 carbon atoms, preferably from 8 to 10 carbon atoms.
- the carboxylic acid can be chosen from:
- saturated and linear monocarboxylic acids comprising from 8 to 20 carbon atoms, preferably from 8 to 18 carbon atoms, more preferably from 14 to 18 carbon atoms, advantageously from 16 to 18 carbon atoms;
- unsaturated and linear monocarboxylic acids comprising from 8 to 20 carbon atoms, preferably from 8 to 18 carbon atoms, more preferably from 14 to 18 carbon atoms, advantageously from 16 to 18 carbon atoms;
- saturated and branched monocarboxylic acids comprising from 8 to 20 carbon atoms, preferably from 8 to 18 carbon atoms, more preferably from 14 to 18 carbon atoms, advantageously from 16 to 18 carbon atoms; unsaturated and branched monocarboxylic acids comprising from 8 to 20 carbon atoms, preferably from 8 to 18 carbon atoms, more preferably from 14 to 18 carbon atoms, advantageously from 16 to 18 carbon atoms.
- the carboxylic acid may also be chosen from:
- saturated and linear monocarboxylic acids comprising from 8 to 12 carbon atoms, preferably from 8 to 10 carbon atoms;
- unsaturated and linear monocarboxylic acids comprising from 8 to 12 carbon atoms, preferably from 8 to 10 carbon atoms;
- saturated and branched monocarboxylic acids comprising from 8 to 12 carbon atoms, preferably from 8 to 10 carbon atoms
- unsaturated and branched monocarboxylic acids comprising from 8 to 12 carbon atoms, preferably from 8 to 10 carbon atoms.
- carboxylic acids according to the invention include pelargonic acid, stearic acid, isostearic acid or oleic acid.
- the polyol comprises at least 3 -OH groups, preferably 3 to 8 -OH groups, more preferably 3 to 6 -OH groups.
- the polyol comprises 3, 4 or 6 -OH groups. In another preferred embodiment of the invention, the polyol comprises from 3 to 10 carbon atoms, preferably from 3 to 8 carbon atoms, more preferably from 3 to 6 carbon atoms.
- polyols according to the invention examples include glycerol, trimethylolpropane, pentaerythritol or dipentaerythritol.
- the polyol ester comprises a mixture of at least a first polyol ester and monocarboxylic acid as defined above and at least one second polyol ester and monocarboxylic acid as defined above and different from the first ester.
- the ester comprises a mixture:
- At least one diester of polyol and of monocarboxylic acid at least one diester of polyol and of monocarboxylic acid
- the ester comprises a mixture:
- At least one triester of trimethylpropane and saturated or unsaturated monocarboxylic acid preferably saturated comprising from 14 to 18 carbon atoms, advantageously from 16 to 18 carbon atoms,
- At least one trimethylpropane and saturated or unsaturated monocarboxylic acid diester preferably saturated comprising from 14 to 18 carbon atoms, advantageously from 16 to 18 carbon atoms.
- the ester is obtained by esterification reaction between a polyol as defined above, at least a first monocarboxylic acid as defined above and at least one second acid.
- carboxylic acid chosen from linear or branched, saturated or unsaturated dicarboxylic acids comprising at least 16 carbon atoms.
- the ester is obtained by esterification reaction between:
- a polyol comprising 3 or 4 -OH groups and from 3 to 6 carbon atoms
- At least one first saturated monocarboxylic acid linear or branched, comprising from 8 to 20 carbon atoms, preferentially from 8 to 18 carbon atoms, and
- At least one second carboxylic acid chosen from saturated, linear or branched dicarboxylic acids comprising at least 16 carbon atoms.
- ester is obtained by esterification reaction between:
- a polyol chosen from pentaerythritol or trimethylolpropane, at least one first saturated or unsaturated, linear or branched monocarboxylic acid comprising from 8 to 18 carbon atoms, and
- At least one second carboxylic acid chosen from saturated, linear or branched dicarboxylic acids comprising from 16 to 36 carbon atoms.
- ester is obtained by esterification reaction between:
- At least one first saturated or unsaturated monocarboxylic acid linear or branched, comprising 18 carbon atoms
- At least one second carboxylic acid chosen from saturated, linear or branched dicarboxylic acids comprising from 16 to 36 carbon atoms.
- polyol ester examples include Priolube 1847 ® sold by the company Croda or Nycobase 8851 ® sold by the company NYCO.
- the ester is obtained by esterification reaction between a polyol as defined above and at least one saturated or unsaturated monocarboxylic acid, linear or branched comprising from 8 to 12 atoms carbon, preferably 8 to 10 carbon atoms.
- ester is obtained by esterification reaction between:
- At least one saturated or unsaturated monocarboxylic acid linear or branched comprising from 8 to 12 carbon atoms, preferably from 8 to 10 carbon atoms.
- the lubricating composition comprises at least 2% by weight, preferably at least 5% by weight, more preferably 5% to 30%, advantageously 5% to 25%, or 5% to 15% by weight. polyol ester weight based on the total weight of the lubricant composition.
- the lubricating composition according to the invention may also comprise an additional base oil chosen from Group I, IV or V oils according to the API classification as defined above, with the exception of the polyol esters according to the invention. .
- the additional base oil according to the invention may especially be chosen from synthetic oils, such as polyalkylene glycols, and from polyalphaolefins.
- 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 kinematic viscosity at 100 ° C. is between 1 and 5. and 15 mm 2 .s "1 according to ASTM D445. Their average molecular weight is generally between 250 and 3000 according to ASTM D5296. Many additives can be used in the lubricant composition used according to the invention.
- the additives for the lubricant composition used according to the invention are chosen especially from friction modifiers, detergents, anti-wear additives, extreme pressure additives, viscosity index improvers, dispersants, antioxidants, pour point improvers, defoamers, thickeners and mixtures thereof.
- Anti-wear additives and extreme pressure additives protect friction surfaces by forming a protective film adsorbed on these surfaces.
- the anti-wear additives are chosen from phosphosulfur additives such as metal alkylthiophosphates, in particular zinc alkylthiophosphates, and more specifically zinc dialkyldithiophosphates or ZnDTPs.
- the preferred compounds have the formula Zn ((SP (S) (OR 1 ) (OR 2 )) 2 , in which R 1 and R 2 , which may be identical or different, independently represent an alkyl group, preferably an alkyl group containing 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.
- the phosphorus provided by these additives can act as a poison of the catalytic systems of automobiles because these additives are ash generators.
- these effects can be minimized by partially substituting amine phosphates with non-phosphorus additives, such as, for example, polysulfides, especially sulfur-containing olefins.
- the lubricating composition according to the invention may comprise from 0.01 to 6% by weight, preferably from 0.05 to 4% by weight, more preferably from 0.1 to 2% by weight relative to the total weight of lubricating composition, antiwear additives and extreme pressure additives.
- the lubricant composition according to the invention may comprise at least one friction-modifying additive.
- the friction modifying additive may be chosen from a compound providing metal elements and an ash-free compound.
- the compounds providing metal elements mention may be made of transition metal complexes such as Mo, Sb, Sn, Fe, Cu and Zn, the ligands of which may be hydrocarbon compounds comprising oxygen, nitrogen, sulfur or phosphorus.
- the ashless friction modifier additives are generally of organic origin and may be selected from alkoxylated amines, alkoxylated fatty amines, fatty epoxides, borate fatty epoxides, or fatty amines.
- the fatty compounds comprise at least one hydrocarbon group comprising from 10 to 24 carbon atoms.
- the lubricant composition according to the invention may comprise from 0.01 to 2% by weight or from 0.01 to 5% by weight, preferably from 0.1 to 1.5% by weight or 0.1 at 2% by weight relative to the total mass of the lubricant composition, friction modifier additive.
- the lubricant composition according to the invention may comprise at least one antioxidant additive.
- the antioxidant additive generally serves to retard the degradation of the lubricating composition in service. This degradation can notably result in the formation of deposits, the presence of sludge or an increase in the viscosity of the lubricant composition.
- Antioxidant additives act in particular as radical inhibitors or destroyers of hydroperoxides.
- antioxidant additives commonly used, mention may be made of antioxidant additives of phenolic type, antioxidant additives of amine type, antioxidant phosphosulfur additives. Some of these antioxidant additives, for example phosphosulfur antioxidant additives, can be ash generators. Phenolic antioxidant additives may be ash-free or may be in the form of neutral or basic metal salts.
- the antioxidant additives may especially 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 12 -C 12 alkyl group, ⁇ , ⁇ '-dialkyl-aryl diamines and mixtures thereof.
- the sterically hindered phenols are chosen from compounds comprising a phenol group in which at least one vicinal carbon of the carbon bearing the alcohol function is substituted with at least one alkyl group containing 10 carbon atoms, preferably an alkyl group containing CrC 6 , preferably a C 4 alkyl group, preferably by the ter-butyl group.
- Amino compounds are another class of antioxidant additives that can be used, optionally in combination with phenolic antioxidant additives.
- amine compounds are aromatic amines, for example aromatic amines of formula NR 3 R 4 R 5 in which R 3 represents an optionally substituted aliphatic or aromatic group, R 4 represents an optionally substituted aromatic group, R 5 represents a hydrogen atom, an alkyl group, an aryl group or a group of formula R 6 S (O) z R 7 in which R 6 represents an alkylene group or an alkenylene group, R 7 represents an alkyl group, a alkenyl group or an aryl group and z represents 0, 1 or 2.
- Sulfurized alkyl phenols or their alkali and alkaline earth metal salts can also be used as antioxidant additives.
- antioxidant additives is copper compounds, for example copper thio- or dithio-phosphates, copper and carboxylic acid salts, dithiocarbamates, sulphonates, phenates, copper acetylacetonates. Copper salts I and II, succinic acid or anhydride salts can also be used.
- the lubricant 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 weight of the composition, of at least one antioxidant additive.
- the lubricant composition according to the invention may also comprise at least one detergent additive.
- the detergent additives generally make it possible to reduce the formation of deposits on the surface of the metal parts by dissolving the secondary oxidation and combustion products.
- the detergent additives that can be used in the lubricant composition according to the invention are generally known to those skilled in the art.
- the detergent additives may be anionic compounds comprising a long lipophilic hydrocarbon chain and a hydrophilic head.
- the associated cation may be a metal cation of an alkali metal or alkaline earth metal.
- the detergent additives are preferably chosen from the alkali metal or alkaline earth metal salts of carboxylic acids, the sulphonates, the salicylates, the naphthenates and the phenate salts.
- the alkali and alkaline earth metals are preferably calcium, magnesium, sodium or barium.
- metal salts generally comprise the metal in stoichiometric amount or in excess, therefore in an amount greater than the stoichiometric amount. It is then overbased detergent additives; the excess metal bringing 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, preferably a carbonate .
- an oil insoluble metal salt for example a carbonate, a hydroxide, an oxalate, an acetate, a glutamate, preferably a carbonate .
- the lubricant composition according to the invention may comprise from 0.5 to 4% by weight of detergent additive relative to the total mass of the lubricant composition.
- the lubricant composition according to the invention may also comprise at least one pour point depressant additive.
- pour point depressant additives By slowing the formation of paraffin crystals, pour point depressant additives generally improve the cold behavior of the lubricant composition according to the invention.
- pour point depressant additives mention may be made of alkyl polymethacrylates, polyacrylates, polyarylamides, polyalkylphenols, polyalkylnaphthalenes and alkylated polystyrenes.
- the lubricant composition according to the invention may also comprise at least one dispersing agent.
- the dispersing agent may 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 weight of dispersing agent relative to the total mass of the lubricating composition.
- the lubricant composition of the present invention may also comprise at least one thickener, such as polyisobutylene or its derivatives.
- the lubricating composition comprises polyisobutylene as a thickener.
- Such an embodiment makes it possible in particular to further improve the detergency properties of the lubricant composition, especially at high temperature.
- the lubricant composition according to the invention may comprise from 0.1 to 5% by weight of thickener relative to the total mass of the lubricant composition.
- the lubricating composition of the present invention may also comprise at least one viscosity index improving additive.
- additives improving the viscosity number include polymeric esters, homopolymers or copolymers, hydrogenated or non-hydrogenated, styrene, butadiene and isoprene, polyacrylates, polymethacrylates (PMA) or alternatively olefin copolymers, in particular ethylene / propylene copolymers.
- the lubricating composition according to the invention can be in various forms.
- the lubricant composition according to the invention may in particular be an anhydrous composition.
- this lubricating composition is not an emulsion.
- the lubricating composition according to the invention is characterized by a KV100 (measured according to ASTM D445) greater than or equal to 12 cSt, preferably from 12 to 17 cSt.
- the lubricant composition defined above is used to lubricate a gas engine.
- the lubricant composition defined above is used to lubricate a gas engine using any type of gas, especially gas having a low methane number, preferably less than 80, more preferably less than 60. It is understood that the lower the value of the methane number, the lower the combustion quality of the gas.
- Gas engine according to the invention more particularly means:
- gas engines for vehicles including heavy goods vehicles or vehicles for public transport such as buses but also marine vehicles such as boats.
- the lubricant composition defined above is used to lubricate a stationary gas engine.
- the invention also relates to the use of at least one mineral base oil and at least one ester selected from polyol esters in a lubricating composition for lubricating a gas engine.
- the invention also relates to a method of lubricating a gas engine comprising contacting at least one mechanical part of the engine with a lubricating composition comprising at least one mineral base oil and at least one ester chosen from polyol esters.
- This evaluation consists in subjecting the lubricating composition to oxidation with nitrogen oxides at a temperature of 150 ° C. and for 48 hours.
- the resistance to oxidation is evaluated by measuring the difference in kinematic viscosity at 100 ° C. measured according to ASTM D445 before and after oxidation and expressed as a percentage of increase in viscosity; the lower the percentage, the better the resistance to oxidation
- a percentage increase in viscosity of less than or equal to 35% corresponds to acceptable oxidation resistance.
- This visual evaluation is performed at room temperature and is based on the appearance of haze in the composition.
- Example 1 1 Preparation of a lubricant composition according to the invention
- Example 13 Evaluation of the properties of detergency of the lubricating composition CL1 1 This evaluation is identical to those described in Example 5 and in Example 10. The results are described in Table 13.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Abstract
The invention relates to the use of a lubricant composition comprising at least one mineral base oil and at least one ester selected from among the polyol esters, for lubricating a gas engine.
Description
COMPOSITION LUBRIFIANTE POUR MOTEUR A GAZ LUBRICATING COMPOSITION FOR GAS ENGINE
La présente invention concerne le domaine des lubrifiants pour moteur à gaz, préférentiellement pour moteur à gaz stationnaire. La présente invention concerne plus particulièrement l'utilisation d'une composition lubrifiante comprenant au moins une huile de base minérale et au moins un ester choisi parmi les esters de polyols pour lubrifier un moteur à gaz, préférentiellement pour moteur à gaz stationnaire. The present invention relates to the field of lubricants for gas engines, preferably for stationary gas engines. The present invention relates more particularly to the use of a lubricating composition comprising at least one mineral base oil and at least one ester chosen from polyol esters for lubricating a gas engine, preferably for a stationary gas engine.
La présente invention concerne également un procédé de lubrification d'un moteur à gaz, préférentiellement pour moteur à gaz stationnaire. The present invention also relates to a method of lubricating a gas engine, preferably for a stationary gas engine.
Les lubrifiants développés spécifiquement pour la lubrification des moteurs à gaz, préférentiellement des moteurs à gaz stationnaires sont connus depuis plusieurs années. Les premiers lubrifiants dédiés à cette application contenaient des huiles de base de groupe I selon la classification API. Ces lubrifiants présentaient un bon comportement à haute température, notamment ne formaient pas ou peu de dépôts mais présentaient une tenue à l'oxydation limitée, notamment à la nitroxydation. Par nitroxydation, on entend l'oxydation par contact avec les oxydes d'azote (NOx). Lubricants developed specifically for the lubrication of gas engines, preferably stationary gas engines have been known for several years. The first lubricants dedicated to this application contained Group I base oils according to the API classification. These lubricants showed good behavior at high temperature, in particular did not form or few deposits but had a limited resistance to oxidation, including nitroxidation. By nitroxidation is meant oxidation by contact with nitrogen oxides (NOx).
Puis les lubrifiants ont incorporé des huiles de base de groupe II selon la classification API, permettant d'améliorer la tenue à l'oxydation. Toutefois, et en particulier sur les moteurs à gaz de très haute puissance, l'utilisation de ces lubrifiants a entraîné la formation de dépôt à haute température (ou de vernis). Il en est de même pour les lubrifiants à base d'huiles de base de groupe III et groupe IV selon la classification API. II existe donc un besoin de disposer de compositions lubrifiantes pour la lubrification de moteur à gaz, préférentiellement pour moteur à gaz stationnaire, présentant de bonnes propriétés de détergence et donc ne formant pas ou peu de dépôt, en particulier à haute température tout en présentant une tenue à l'oxydation, notamment à la nitroxydation, satisfaisante voire améliorée. The lubricants then incorporated Group II base oils according to the API classification, making it possible to improve the resistance to oxidation. However, and particularly on very high power gas engines, the use of these lubricants has resulted in the formation of high temperature (or varnish) deposition. It is the same for lubricants based on base oils of group III and group IV according to API classification. There is therefore a need for lubricating compositions for the lubrication of a gas engine, preferably for a stationary gas engine, having good detergency properties and thus forming no or little deposition, in particular at high temperature while presenting a resistance to oxidation, especially to nitroxidation, satisfactory or even improved.
Il a maintenant été trouvé que la combinaison d'au moins une huile de base minérale et d'au moins un ester choisi parmi les esters de polyols permet de fournir une composition lubrifiante dédiée à la lubrification des moteurs à gaz, préférentiellement des moteurs à gaz stationnaires, présentant une tenue à l'oxydation, notamment à la nitroxydation,
satisfaisante voire améliorée et formant peu ou pas de dépôts, en particulier à haute température. It has now been found that the combination of at least one mineral base oil and at least one ester chosen from polyol esters makes it possible to provide a lubricating composition dedicated to the lubrication of gas engines, preferably gas engines. stationary, exhibiting resistance to oxidation, especially to nitroxidation, satisfactory or even improved and forming little or no deposits, especially at high temperature.
Ainsi, l'invention fournit une composition lubrifiante qui permet d'apporter une solution à tout ou partie des problèmes des compositions lubrifiantes destinées à la lubrification des moteurs à gaz, préférentiellement des moteurs à gaz stationnaires. Thus, the invention provides a lubricating composition which makes it possible to provide a solution to all or part of the problems of lubricating compositions intended for the lubrication of gas engines, preferably stationary gas engines.
La présente invention a donc pour objet l'utilisation d'une composition lubrifiante comprenant au moins une huile de base minérale et au moins un ester choisi parmi les esters de polyols pour lubrifier un moteur à gaz. The present invention therefore relates to the use of a lubricant composition comprising at least one mineral base oil and at least one ester chosen from polyol esters for lubricating a gas engine.
De manière surprenante, la demanderesse a constaté que la combinaison d'au moins une huile de base minérale et d'au moins un ester choisi parmi les esters de polyols dans une composition lubrifiante pour moteur à gaz, préférentiellement pour moteur à gaz stationnaire permet d'améliorer la tenue à l'oxydation, notamment à la nitroxydation, de la composition lubrifiante. Surprisingly, the applicant has found that the combination of at least one mineral base oil and at least one ester chosen from polyol esters in a lubricating composition for a gas engine, preferably for a stationary gas engine, makes it possible to to improve the resistance to oxidation, especially to nitroxidation, of the lubricating composition.
Avantageusement, les compositions lubrifiantes selon l'invention présentent à la fois une bonne tenue à l'oxydation, notamment à la nitroxydation, tout en réduisant, voire en supprimant, la formation de dépôts, en particulier à haute température. Advantageously, the lubricant compositions according to the invention have both good resistance to oxidation, especially to nitroxidation, while reducing or even eliminating the formation of deposits, especially at high temperature.
Avantageusement, les compositions lubrifiantes selon l'invention présentent de bonnes propriétés de tenue à l'oxydation, notamment à la nitroxydation, et de détergence une fois mise en œuvre dans un moteur à gaz et dont la formulation est facile à mettre en œuvre. Advantageously, the lubricant compositions according to the invention have good oxidation resistance properties, especially nitroxidation, and detergency once implemented in a gas engine and whose formulation is easy to implement.
Avantageusement, les compositions lubrifiantes selon l'invention présentent de bonnes propriétés de tenue à l'oxydation, notamment à la nitroxydation, et de détergence une fois mise en œuvre dans un moteur à gaz tout en étant stables dans le temps, notamment stables au stockage. Advantageously, the lubricant compositions according to the invention have good oxidation resistance properties, especially nitroxidation, and detergency properties when implemented in a gas engine while being stable over time, in particular stable storage .
Dans un mode de réalisation de l'invention, le moteur à gaz est un moteur à gaz stationnaire.
Dans un mode de réalisation de l'invention, l'huile de base minérale est choisie parmi une huile de base de groupe II ou une huile de base de groupe III selon la classification API, préférentiellement une huile de bas de groupe II selon la classification API. Dans un autre mode de réalisation de l'invention, la composition lubrifiante comprend au moins 50% en poids, préférentiellement de 50% à 90% en poids, d'huile de base minérale par rapport au poids total de la composition lubrifiante. In one embodiment of the invention, the gas engine is a stationary gas engine. In one embodiment of the invention, the mineral base oil is chosen from a Group II base oil or a Group III base oil according to the API classification, preferably a Group II bottom oil according to the classification. API. In another embodiment of the invention, the lubricating composition comprises at least 50% by weight, preferably from 50% to 90% by weight, of mineral base oil relative to the total weight of the lubricating composition.
Dans un autre mode de réalisation de l'invention, l'ester est choisi parmi les esters de polyols et d'acides carboxyliques saturés ou insaturés, linéaires ou ramifiés comprenant au moins 8 atomes de carbone. In another embodiment of the invention, the ester is chosen from saturated or unsaturated linear or branched polyol esters of carboxylic acids comprising at least 8 carbon atoms.
Dans un autre mode de réalisation de l'invention, l'acide carboxylique est un acide monocarboxylique saturé ou insaturé, linéaire ou ramifié. In another embodiment of the invention, the carboxylic acid is a saturated or unsaturated monocarboxylic acid, linear or branched.
Dans un autre mode de réalisation de l'invention, l'acide carboxylique comprend de 8 à 20 atomes de carbone, préférentiellement de 8 à 18 atomes de carbone. In another embodiment of the invention, the carboxylic acid comprises from 8 to 20 carbon atoms, preferably from 8 to 18 carbon atoms.
Dans un autre mode de réalisation de l'invention, le polyol comprend au moins 3 groupements -OH, préférentiellement de 3 à 8 groupements -OH. In another embodiment of the invention, the polyol comprises at least 3 -OH groups, preferably 3 to 8 -OH groups.
Dans un autre mode de réalisation de l'invention, le polyol comprend de 3 à 10 atomes de carbone. Dans un autre mode de réalisation de l'invention, l'ester de polyol comprend un mélange d'au moins un premier ester de polyol et d'acide monocarboxylique tel que défini ci- dessus et d'au moins un second ester de polyol et d'acide monocarboxylique tel que défini ci-dessus et différent du premier ester. Dans un autre mode de réalisation de l'invention, l'ester est obtenu par réaction d'estérification entre un polyol tel que défini ci-dessus, au moins un premier acide monocarboxylique tel que défini ci-dessus et au moins un second acide carboxylique choisi parmi les acides dicarboxyliques linéaires ou ramifiés, saturés ou insaturés comprenant au moins 16 atomes de carbone.
Dans un autre mode de réalisation de l'invention, la composition lubrifiante comprend au moins 2% en poids, préférentiellement au moins 5% en poids, d'ester de polyol par rapport au poids total de la composition lubrifiante. Dans un autre mode de réalisation de l'invention, la composition lubrifiante comprend en outre du polyisobutylène. In another embodiment of the invention, the polyol comprises from 3 to 10 carbon atoms. In another embodiment of the invention, the polyol ester comprises a mixture of at least a first polyol ester and monocarboxylic acid as defined above and at least one second polyol ester and monocarboxylic acid as defined above and different from the first ester. In another embodiment of the invention, the ester is obtained by esterification reaction between a polyol as defined above, at least a first monocarboxylic acid as defined above and at least a second carboxylic acid. selected from linear or branched, saturated or unsaturated dicarboxylic acids comprising at least 16 carbon atoms. In another embodiment of the invention, the lubricating composition comprises at least 2% by weight, preferably at least 5% by weight, of polyol ester relative to the total weight of the lubricating composition. In another embodiment of the invention, the lubricating composition further comprises polyisobutylene.
L'invention concerne également l'utilisation d'au moins une huile de base minérale telle que définie ci-dessus et d'au moins un ester choisi parmi les esters de polyols tels que définis ci-dessus dans une composition lubrifiante pour lubrifier un moteur à gaz. The invention also relates to the use of at least one mineral base oil as defined above and at least one ester chosen from the polyol esters as defined above in a lubricant composition for lubricating an engine. gas.
L'invention concerne également un procédé de lubrification d'un moteur à gaz comprenant la mise en contact d'au moins une pièce mécanique du moteur avec une composition lubrifiante telle que définie ci-dessus. The invention also relates to a method of lubricating a gas engine comprising contacting at least one mechanical part of the engine with a lubricant composition as defined above.
Description détaillée de l'invention Detailed description of the invention
Les pourcentages indiqués ci-dessous correspondent à des pourcentages en masse de matière active. The percentages given below correspond to percentages by mass of active ingredient.
La composition lubrifiante selon l'invention comprend au moins une huile de base minérale. Les huiles de base minérales utilisées dans les compositions lubrifiantes selon l'invention peuvent être des huiles d'origines minérales appartenant aux groupes I, Il ou III selon les classes définies dans la classification API (ou leurs équivalents selon la classification ATIEL) (tableau A) ou leurs mélanges.
Teneur en Teneur en Indice de The lubricating composition according to the invention comprises at least one mineral base oil. The mineral base oils used in the lubricating compositions according to the invention may be oils of mineral origins belonging to groups I, II or III according to the classes defined in the API classification (or their equivalents according to the ATIEL classification) (Table A ) or their mixtures. Content in the Index of
saturés soufre viscosité (VI) saturated sulfur viscosity (VI)
Groupement 1 Group 1
< 90 % > 0,03 % 80 <VI < 120 Huiles minérales <90%> 0.03% 80 <VI <120 Mineral oils
Groupement II Group II
≥90 % <0,03 % 80 <VI < 120 Huiles hydrocraquées ≥90% <0.03% 80 <VI <120 Hydrocracked oils
Groupement III Group III
Huiles hydrocraquées ≥90 % <0,03 % ≥120 ou hydro-isomérisées Hydrocracked oils ≥90% <0.03% ≥120 or hydro-isomerised
Groupement IV Polyalphaoléfines (PAO) Group IV Polyalphaolefines (PAO)
Esters et autres bases non incluses dans les groupes 1Esters and other bases not included in groups 1
Groupement V Group V
à IV at IV
Tableau A Table A
Dans un mode de réalisation préféré de l'invention, l'huile de base est une huile de base de groupe II ou une huile de base de groupe III selon la classification API. In a preferred embodiment of the invention, the base oil is a Group II base oil or a Group III base oil according to the API classification.
Dans un mode de réalisation plus préférée de l'invention, l'huile de base est une huile de base de groupe II selon la classification API. In a more preferred embodiment of the invention, the base oil is a Group II base oil according to the API classification.
Dans un autre mode de réalisation préféré de l'invention, la composition lubrifiante comprend au moins 50%, préférentiellement de 50% à 90%, plus préférentiellement de 60% à 90%, encore plus préférentiellement de 65% à 90%, avantageusement de 65% à 85%, en poids d'huile de base minérale par rapport au poids total de la composition lubrifiante. In another preferred embodiment of the invention, the lubricating composition comprises at least 50%, preferably from 50% to 90%, more preferably from 60% to 90%, even more preferably from 65% to 90%, advantageously from 65% to 85% by weight of mineral base oil based on the total weight of the lubricant composition.
Dans un autre mode de réalisation plus préféré de l'invention, la composition lubrifiante comprend au moins 70%, préférentiellement de 70% à 90%, plus préférentiellement de 75% à 90%, avantageusement de 75% à 85%, en poids d'huile de base minérale par rapport au poids total de la composition lubrifiante. In another more preferred embodiment of the invention, the lubricating composition comprises at least 70%, preferably from 70% to 90%, more preferably from 75% to 90%, advantageously from 75% to 85% by weight of d mineral base oil with respect to the total weight of the lubricating composition.
La composition lubrifiante selon l'invention comprend également au moins un ester choisi parmi les esters de polyols. The lubricant composition according to the invention also comprises at least one ester chosen from polyol esters.
Par ester de polyol selon l'invention, on entend tout ester obtenu par estérification d'au moins un acide carboxylique avec au moins un polyol.
Par acide carboxylique selon l'invention, on entend les acides monocarboxyliques et les acides polycarboxyliques. By polyol ester according to the invention is meant any ester obtained by esterification of at least one carboxylic acid with at least one polyol. By carboxylic acid according to the invention is meant monocarboxylic acids and polycarboxylic acids.
Dans un mode de réalisation de l'invention, l'ester est choisi parmi les esters de polyols et d'acides carboxyliques saturés ou insaturés, linéaires ou ramifiés comprenant au moins 8 atomes de carbone. In one embodiment of the invention, the ester is chosen from esters of saturated or unsaturated, linear or branched polyols and carboxylic acids comprising at least 8 carbon atoms.
Dans un mode de réalisation préféré de l'invention, l'acide carboxylique est un acide monocarboxylique saturé ou insaturé, linéaire ou ramifié. In a preferred embodiment of the invention, the carboxylic acid is a saturated or unsaturated monocarboxylic acid, linear or branched.
L'acide carboxylique peut ainsi être choisi parmi : The carboxylic acid can thus be chosen from:
- les acides monocarboxyliques saturés et linéaires ; saturated and linear monocarboxylic acids;
- les acides monocarboxyliques insaturés et linéaires ; unsaturated and linear monocarboxylic acids;
- les acides monocarboxyliques saturés et ramifiés ; saturated and branched monocarboxylic acids;
- les acides monocarboxyliques insaturés et ramifiés. unsaturated and branched monocarboxylic acids.
Dans un autre mode de réalisation préféré de l'invention, l'acide carboxylique comprend de 8 à 20 atomes de carbone, préférentiellement de 8 à 18 atomes de carbone. In another preferred embodiment of the invention, the carboxylic acid comprises from 8 to 20 carbon atoms, preferably from 8 to 18 carbon atoms.
Dans un mode de réalisation particulier de l'invention, l'acide carboxylique comprend de 14 à 18 atomes de carbone, préférentiellement de 16 à 18 atomes de carbone. In a particular embodiment of the invention, the carboxylic acid comprises from 14 to 18 carbon atoms, preferably from 16 to 18 carbon atoms.
Dans un autre mode de réalisation particulier de l'invention, l'acide carboxylique comprend de 8 à 12 atomes de carbone, préférentiellement de 8 à 10 atomes de carbone. Ainsi, l'acide carboxylique peut être choisi parmi : In another particular embodiment of the invention, the carboxylic acid comprises from 8 to 12 carbon atoms, preferably from 8 to 10 carbon atoms. Thus, the carboxylic acid can be chosen from:
- les acides monocarboxyliques saturés et linéaires comprenant de 8 à 20 atomes de carbone, préférentiellement de 8 à 18 atomes de carbone, plus préférentiellement de 14 à 18 atomes de carbone, avantageusement de 16 à 18 atomes de carbone ; saturated and linear monocarboxylic acids comprising from 8 to 20 carbon atoms, preferably from 8 to 18 carbon atoms, more preferably from 14 to 18 carbon atoms, advantageously from 16 to 18 carbon atoms;
- les acides monocarboxyliques insaturés et linéaires comprenant de 8 à 20 atomes de carbone, préférentiellement de 8 à 18 atomes de carbone, plus préférentiellement de 14 à 18 atomes de carbone, avantageusement de 16 à 18 atomes de carbone ; unsaturated and linear monocarboxylic acids comprising from 8 to 20 carbon atoms, preferably from 8 to 18 carbon atoms, more preferably from 14 to 18 carbon atoms, advantageously from 16 to 18 carbon atoms;
- les acides monocarboxyliques saturés et ramifiés comprenant de 8 à 20 atomes de carbone, préférentiellement de 8 à 18 atomes de carbone, plus préférentiellement de 14 à 18 atomes de carbone, avantageusement de 16 à 18 atomes de carbone ;
- les acides monocarboxyliques insaturés et ramifiés comprenant de 8 à 20 atomes de carbone, préférentiellement de 8 à 18 atomes de carbone, plus préférentiellement de 14 à 18 atomes de carbone, avantageusement de 16 à 18 atomes de carbone. L'acide carboxylique peut également être choisi parmi : saturated and branched monocarboxylic acids comprising from 8 to 20 carbon atoms, preferably from 8 to 18 carbon atoms, more preferably from 14 to 18 carbon atoms, advantageously from 16 to 18 carbon atoms; unsaturated and branched monocarboxylic acids comprising from 8 to 20 carbon atoms, preferably from 8 to 18 carbon atoms, more preferably from 14 to 18 carbon atoms, advantageously from 16 to 18 carbon atoms. The carboxylic acid may also be chosen from:
- les acides monocarboxyliques saturés et linéaires comprenant de 8 à 12 atomes de carbone, préférentiellement de 8 à 10 atomes de carbone; saturated and linear monocarboxylic acids comprising from 8 to 12 carbon atoms, preferably from 8 to 10 carbon atoms;
- les acides monocarboxyliques insaturés et linéaires comprenant de 8 à 12 atomes de carbone, préférentiellement de 8 à 10 atomes de carbone; unsaturated and linear monocarboxylic acids comprising from 8 to 12 carbon atoms, preferably from 8 to 10 carbon atoms;
- les acides monocarboxyliques saturés et ramifiés comprenant de 8 à 12 atomes de carbone, préférentiellement de 8 à 10 atomes de carbone saturated and branched monocarboxylic acids comprising from 8 to 12 carbon atoms, preferably from 8 to 10 carbon atoms
- les acides monocarboxyliques insaturés et ramifiés comprenant de 8 à 12 atomes de carbone, préférentiellement de 8 à 10 atomes de carbone. Comme exemples d'acides carboxyliques selon l'invention, on peut citer l'acide pélargonique, l'acide stéarique, l'acide isostéarique ou l'acide oléique. unsaturated and branched monocarboxylic acids comprising from 8 to 12 carbon atoms, preferably from 8 to 10 carbon atoms. Examples of carboxylic acids according to the invention include pelargonic acid, stearic acid, isostearic acid or oleic acid.
Dans un autre mode de réalisation préféré de l'invention, le polyol comprend au moins 3 groupements -OH, préférentiellement de 3 à 8 groupements -OH, plus préférentiellement de 3 à 6 groupements -OH. In another preferred embodiment of the invention, the polyol comprises at least 3 -OH groups, preferably 3 to 8 -OH groups, more preferably 3 to 6 -OH groups.
Dans un mode de réalisation plus préféré de l'invention, le polyol comprend 3, 4 ou 6 groupements -OH. Dans un autre mode de réalisation préféré de l'invention, le polyol comprend de 3 à 10 atomes de carbone, préférentiellement de 3 à 8 atomes de carbone, plus préférentiellement de 3 à 6 atomes de carbone. In a more preferred embodiment of the invention, the polyol comprises 3, 4 or 6 -OH groups. In another preferred embodiment of the invention, the polyol comprises from 3 to 10 carbon atoms, preferably from 3 to 8 carbon atoms, more preferably from 3 to 6 carbon atoms.
Comme exemples de polyols selon l'invention, on peut citer le glycérol, le triméthylolpropane, le pentaérythritol ou le dipentaérytritol. Examples of polyols according to the invention include glycerol, trimethylolpropane, pentaerythritol or dipentaerythritol.
Dans un mode de réalisation particulier de l'invention, l'ester de polyol comprend un mélange d'au moins un premier ester de polyol et d'acide monocarboxylique tel que défini ci-dessus et d'au moins un second ester de polyol et d'acide monocarboxylique tel que défini ci-dessus et différent du premier ester.
Dans un mode de réalisation plus particulier de l'invention, l'ester comprend un mélange :In a particular embodiment of the invention, the polyol ester comprises a mixture of at least a first polyol ester and monocarboxylic acid as defined above and at least one second polyol ester and monocarboxylic acid as defined above and different from the first ester. In a more particular embodiment of the invention, the ester comprises a mixture:
- d'au moins un triester de polyol et d'acide monocarboxylique, at least one triester of polyol and of monocarboxylic acid,
- d'au moins un diester de polyol et d'acide monocarboxylique, at least one diester of polyol and of monocarboxylic acid,
le polyol et l'acide monocarboxylique étant tels que définis ci-dessus. the polyol and the monocarboxylic acid being as defined above.
Dans un mode de réalisation encore plus particulier de l'invention, l'ester comprend un mélange : In an even more particular embodiment of the invention, the ester comprises a mixture:
- d'au moins un triester de trimethylpropane et d'acide monocarboxylique saturé ou insaturé, préférentiellement saturé comprenant de 14 à 18 atomes de carbone, avantageusement de 16 à 18 atomes de carbone, at least one triester of trimethylpropane and saturated or unsaturated monocarboxylic acid, preferably saturated comprising from 14 to 18 carbon atoms, advantageously from 16 to 18 carbon atoms,
- d'au moins un diester de triméthylpropane et d'acide monocarboxylique saturé ou insaturé, préférentiellement saturé comprenant de 14 à 18 atomes de carbone, avantageusement de 16 à 18 atomes de carbone. at least one trimethylpropane and saturated or unsaturated monocarboxylic acid diester, preferably saturated comprising from 14 to 18 carbon atoms, advantageously from 16 to 18 carbon atoms.
Comme exemple d'ester de polyol selon l'invention, on peut citer le Radialube 7250® commercialisé par la société OLEON. Examples of polyol ester according to the invention, mention may be made Radialube 7250 ® sold by the company OLEON.
Dans un autre mode de réalisation particulier de l'invention, l'ester est obtenu par réaction d'estérification entre un polyol tel que défini ci-dessus, au moins un premier acide monocarboxylique tel que défini ci-dessus et au moins un second acide carboxylique choisi parmi les acides dicarboxyliques linéaires ou ramifiés, saturés ou insaturés comprenant au moins 16 atomes de carbone. Dans un autre mode de réalisation plus particulier de l'invention, l'ester est obtenu par réaction d'estérification entre : In another particular embodiment of the invention, the ester is obtained by esterification reaction between a polyol as defined above, at least a first monocarboxylic acid as defined above and at least one second acid. carboxylic acid chosen from linear or branched, saturated or unsaturated dicarboxylic acids comprising at least 16 carbon atoms. In another more particular embodiment of the invention, the ester is obtained by esterification reaction between:
- un polyol comprenant 3 ou 4 groupements -OH et de 3 à 6 atomes de carbone, a polyol comprising 3 or 4 -OH groups and from 3 to 6 carbon atoms,
- au moins un premier acide monocarboxylique saturé, linéaire ou ramifié comprenant de 8 à 20 atomes de carbone, préférentiellement de 8 à 18 atomes de carbone, et at least one first saturated monocarboxylic acid, linear or branched, comprising from 8 to 20 carbon atoms, preferentially from 8 to 18 carbon atoms, and
- au moins un second acide carboxylique choisi parmi les acides dicarboxyliques saturés, linéaires ou ramifiés comprenant au moins 16 atomes de carbone. at least one second carboxylic acid chosen from saturated, linear or branched dicarboxylic acids comprising at least 16 carbon atoms.
Dans un autre mode de réalisation plus particulier de l'invention, l'ester est obtenu par réaction d'estérification entre : In another more particular embodiment of the invention, the ester is obtained by esterification reaction between:
- un polyol choisi parmi le pentaéryhtritol ou le triméthylolpropane,
- au moins un premier acide monocarboxylique saturé ou insaturé, linéaire ou ramifié comprenant de 8 à 18 atomes de carbone, et a polyol chosen from pentaerythritol or trimethylolpropane, at least one first saturated or unsaturated, linear or branched monocarboxylic acid comprising from 8 to 18 carbon atoms, and
- au moins un second acide carboxylique choisi parmi les acides dicarboxyliques saturés, linéaires ou ramifiés comprenant de 16 à 36 atomes de carbone. at least one second carboxylic acid chosen from saturated, linear or branched dicarboxylic acids comprising from 16 to 36 carbon atoms.
Dans un autre mode de réalisation plus particulier de l'invention, l'ester est obtenu par réaction d'estérification entre : In another more particular embodiment of the invention, the ester is obtained by esterification reaction between:
- le pentaerythritol, pentaerythritol,
- au moins un premier acide monocarboxylique saturé ou insaturé, linéaire ou ramifié comprenant 18 atomes de carbone, et at least one first saturated or unsaturated monocarboxylic acid, linear or branched, comprising 18 carbon atoms, and
- au moins un second acide carboxylique choisi parmi les acides dicarboxyliques saturés, linéaires ou ramifiés comprenant de 16 atomes à 36 atomes de carbone. at least one second carboxylic acid chosen from saturated, linear or branched dicarboxylic acids comprising from 16 to 36 carbon atoms.
Comme exemple d'ester de polyol selon l'invention, on peut citer le Priolube 1847® commercialisé par la société CRODA ou le Nycobase 8851 ® commercialisé par la société NYCO. Examples of polyol ester according to the invention, mention may be made Priolube 1847 ® sold by the company Croda or Nycobase 8851 ® sold by the company NYCO.
Dans un autre mode de réalisation particulier de l'invention, l'ester est obtenu par réaction d'estérification entre un polyol tel que défini ci-dessus et au moins un acide monocarboxylique saturé ou insaturé, linéaire ou ramifié comprenant de 8 à 12 atomes de carbone, préférentiellement de 8 à 10 atomes de carbone. In another particular embodiment of the invention, the ester is obtained by esterification reaction between a polyol as defined above and at least one saturated or unsaturated monocarboxylic acid, linear or branched comprising from 8 to 12 atoms carbon, preferably 8 to 10 carbon atoms.
Dans un autre mode de réalisation plus particulier de l'invention, l'ester est obtenu par réaction d'estérification entre : In another more particular embodiment of the invention, the ester is obtained by esterification reaction between:
- le dipentaérythritol, et dipentaerythritol, and
- au moins un acide monocarboxylique saturé ou insaturé, linéaire ou ramifié comprenant de 8 à 12 atomes de carbone, préférentiellement de 8 à 10 atomes de carbone. - At least one saturated or unsaturated monocarboxylic acid, linear or branched comprising from 8 to 12 carbon atoms, preferably from 8 to 10 carbon atoms.
Dans un mode de réalisation de l'invention, la composition lubrifiante comprend au moins 2% en poids, préférentiellement au moins 5% en poids, plus préférentiellement de 5 à 30%, avantageusement de 5 à 25% ou de 5 à 15% en poids d'ester de polyol par rapport au poids total de la composition lubrifiante. In one embodiment of the invention, the lubricating composition comprises at least 2% by weight, preferably at least 5% by weight, more preferably 5% to 30%, advantageously 5% to 25%, or 5% to 15% by weight. polyol ester weight based on the total weight of the lubricant composition.
La composition lubrifiante selon l'invention peut comprendre en outre une huile de base additionnelle choisie parmi les huiles de groupe I, IV ou V selon la classification API telles que définies ci-dessus, à l'exception des esters de polyols selon l'invention.
L'huile de base additionnelle selon l'invention peut notamment être choisie parmi les huiles synthétiques, telles que les polyalkylene glycols, et parmi les polyalphaoléfines. 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 cinématique à 100 °C est comprise entre 1 ,5 et 15 mm2.s"1 selon la norme ASTM D445. Leur masse moléculaire moyenne est généralement comprise entre 250 et 3 000 selon la norme ASTM D5296. De nombreux additifs peuvent être utilisés dans la composition lubrifiante utilisée selon l'invention. The lubricating composition according to the invention may also comprise an additional base oil chosen from Group I, IV or V oils according to the API classification as defined above, with the exception of the polyol esters according to the invention. . The additional base oil according to the invention may especially be chosen from synthetic oils, such as polyalkylene glycols, and from polyalphaolefins. 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 kinematic viscosity at 100 ° C. is between 1 and 5. and 15 mm 2 .s "1 according to ASTM D445. Their average molecular weight is generally between 250 and 3000 according to ASTM D5296. Many additives can be used in the lubricant composition used according to the invention.
Les additifs pour la composition lubrifiante utilisée selon l'invention sont notamment 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 additives for the lubricant composition used according to the invention are chosen especially from friction modifiers, detergents, anti-wear additives, extreme pressure additives, viscosity index improvers, dispersants, antioxidants, pour point improvers, defoamers, thickeners and mixtures thereof.
Les additifs anti-usure et les additifs extrême pression protègent les surfaces en frottement par formation d'un film protecteur adsorbé sur ces surfaces. Anti-wear additives and extreme pressure additives protect friction surfaces by forming a protective film adsorbed on these surfaces.
II 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)(OR1)(OR2))2, dans laquelle R1 et R2, identiques ou différents, représentent indépendamment un groupement alkyle, préférentiellement un groupement alkyle comportant de 1 à 18 atomes de carbone. There is a wide variety of anti-wear additives. In a preferred manner for the lubricating composition according to the invention, the anti-wear additives are chosen from phosphosulfur additives such as metal alkylthiophosphates, in particular zinc alkylthiophosphates, and more specifically zinc dialkyldithiophosphates or ZnDTPs. The preferred compounds have the formula Zn ((SP (S) (OR 1 ) (OR 2 )) 2 , in which R 1 and R 2 , which may be identical or different, independently represent an alkyl group, preferably an alkyl group containing from 1 to 18 carbon atoms.
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. 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 of the catalytic systems of automobiles because these additives are ash generators. These effects can be minimized by partially substituting amine phosphates with non-phosphorus additives, such as, for example, polysulfides, especially sulfur-containing olefins. Advantageously, the lubricating composition according to the invention may comprise from 0.01 to 6% by weight, preferably from 0.05 to 4% by weight, more preferably from 0.1 to 2% by weight relative to the total weight of lubricating composition, antiwear additives and extreme pressure additives.
De manière avantageuse, la composition lubrifiante selon l'invention peut comprendre au moins un additif modificateur de frottement. L'additif modificateur de frottement peut être choisi parmi un composé apportant des éléments métalliques et un composé exempt de cendres. Parmi les composés apportant des éléments métalliques, on peut citer les complexes de métaux de transition tels que Mo, Sb, Sn, Fe, Cu, Zn dont les ligands peuvent être des composés hydrocarbonés comprenant des atomes d'oxygène, d'azote, de soufre ou de phosphore. Les additifs modificateurs de frottement exempt de cendres sont généralement d'origine organique et peuvent être choisis parmi les aminés alcoxylées, les aminés grasses alcoxylées, les époxydes gras, les époxydes gras de borate ou les aminés grasses. Selon l'invention, les composés gras comprennent au moins un groupement hydrocarboné comprenant de 10 à 24 atomes de carbone. Advantageously, the lubricant composition according to the invention may comprise at least one friction-modifying additive. The friction modifying additive may be chosen from a compound providing metal elements and an ash-free compound. Among the compounds providing metal elements, mention may be made of transition metal complexes such as Mo, Sb, Sn, Fe, Cu and Zn, the ligands of which may be hydrocarbon compounds comprising oxygen, nitrogen, sulfur or phosphorus. The ashless friction modifier additives are generally of organic origin and may be selected from alkoxylated amines, alkoxylated fatty amines, fatty epoxides, borate fatty epoxides, or fatty amines. According to the invention, the fatty compounds comprise at least one hydrocarbon group comprising from 10 to 24 carbon atoms.
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. De manière avantageuse, la composition lubrifiante selon l'invention peut comprendre au moins un additif antioxydant. Advantageously, the lubricant composition according to the invention may comprise from 0.01 to 2% by weight or from 0.01 to 5% by weight, preferably from 0.1 to 1.5% by weight or 0.1 at 2% by weight relative to the total mass of the lubricant composition, friction modifier additive. Advantageously, the lubricant composition according to the invention may comprise at least one antioxidant additive.
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. The antioxidant additive generally serves to retard the degradation of the lubricating composition in service. This degradation can notably result in the formation of deposits, the presence of sludge or an increase in the viscosity of the lubricant composition.
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 CrC12, les Ν,Ν'-dialkyle-aryle-diamines et leurs mélanges. Antioxidant additives act in particular as radical inhibitors or destroyers of hydroperoxides. Among the antioxidant additives commonly used, mention may be made of antioxidant additives of phenolic type, antioxidant additives of amine type, antioxidant phosphosulfur additives. Some of these antioxidant additives, for example phosphosulfur antioxidant additives, can be ash generators. Phenolic antioxidant additives may be ash-free or may be in the form of neutral or basic metal salts. The antioxidant additives may especially 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 12 -C 12 alkyl group, Ν, Ν'-dialkyl-aryl diamines and mixtures thereof.
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 C C10, de préférence un groupement alkyle en CrC6, de préférence un groupement alkyle en C4, de préférence par le groupement ter-butyle. Preferably, according to the invention, the sterically hindered phenols are chosen from compounds comprising a phenol group in which at least one vicinal carbon of the carbon bearing the alcohol function is substituted with at least one alkyl group containing 10 carbon atoms, preferably an alkyl group containing CrC 6 , preferably a C 4 alkyl group, preferably by the ter-butyl group.
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 aminés aromatiques, par exemple les aminés aromatiques de formule NR3R4R5 dans laquelle R3 représente un groupement aliphatique ou un groupement aromatique, éventuellement substitué, R4 représente un groupement aromatique, éventuellement substitué, R5 représente un atome d'hydrogène, un groupement alkyle, un groupement aryle ou un groupement de formule R6S(0)zR7 dans laquelle R6 représente un groupement alkylène ou un groupement alkenylène, R7 représente un groupement alkyle, un groupement alcényle ou un groupement aryle et z représente 0, 1 ou 2. Amino compounds are another class of antioxidant additives that can be used, optionally in combination with phenolic antioxidant additives. Examples of amine compounds are aromatic amines, for example aromatic amines of formula NR 3 R 4 R 5 in which R 3 represents an optionally substituted aliphatic or aromatic group, R 4 represents an optionally substituted aromatic group, R 5 represents a hydrogen atom, an alkyl group, an aryl group or a group of formula R 6 S (O) z R 7 in which R 6 represents an alkylene group or an alkenylene group, R 7 represents an alkyl group, a alkenyl group or an aryl group and z represents 0, 1 or 2.
Des alkyl phénols sulfurisés ou leurs sels de métaux alcalins et alcalino-terreux peuvent également être utilisés comme additifs antioxydants. Sulfurized alkyl phenols or their alkali and alkaline earth metal salts can also be used as antioxidant additives.
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. Another class of antioxidant additives is copper compounds, for example copper thio- or dithio-phosphates, copper and carboxylic acid salts, dithiocarbamates, sulphonates, phenates, copper acetylacetonates. Copper salts I and II, succinic acid or anhydride salts can also be used.
La composition lubrifiante selon l'invention peut contenir tous types d'additifs antioxydants connus de l'homme du métier. The lubricant composition according to the invention may contain all types of antioxidant additives known to those skilled in the art.
De manière avantageuse, la composition lubrifiante comprend au moins un additif antioxydant exempt de cendres. Advantageously, the lubricating composition comprises at least one ash-free antioxidant additive.
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. Also advantageously, the lubricating composition according to the invention comprises from 0.5 to 2% by weight relative to the total weight of the composition, of at least one antioxidant additive.
La composition lubrifiante selon l'invention peut également comprendre au moins un additif détergent.
Les additifs détergents permettent généralement de réduire la formation de dépôts à la surface des pièces métalliques par dissolution des produits secondaires d'oxydation et de combustion. The lubricant composition according to the invention may also comprise at least one detergent additive. The detergent additives generally make it possible to reduce the formation of deposits on the surface of the metal parts by dissolving the secondary oxidation and combustion products.
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. The detergent additives that can be used in the lubricant composition according to the invention are generally known to those skilled in the art. The detergent additives may be anionic compounds comprising a long lipophilic hydrocarbon chain and a hydrophilic head. The associated cation may be a metal cation of an alkali metal or alkaline earth metal.
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. The detergent additives are preferably chosen from the alkali metal or alkaline earth metal salts of carboxylic acids, the sulphonates, the salicylates, the naphthenates and the phenate salts. The alkali and alkaline earth metals are preferably calcium, magnesium, sodium or barium.
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. These metal salts generally comprise the metal in stoichiometric amount or in excess, therefore in an amount greater than the stoichiometric amount. It is then overbased detergent additives; the excess metal bringing 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, preferably a 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. Advantageously, the lubricant composition according to the invention may comprise from 0.5 to 4% by weight of detergent additive relative to the total mass of the lubricant composition.
De manière également avantageuse, la composition lubrifiante selon l'invention peut également comprendre au moins un additif abaisseur de point d'écoulement. Also advantageously, the lubricant composition according to the invention may also comprise at least one pour point depressant additive.
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. By slowing the formation of paraffin crystals, pour point depressant additives generally improve the cold behavior of the lubricant composition according to the 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. As examples of pour point depressant additives, mention may be made of alkyl polymethacrylates, polyacrylates, polyarylamides, polyalkylphenols, polyalkylnaphthalenes and alkylated polystyrenes.
De manière avantageuse, la composition lubrifiante selon l'invention peut également comprendre au moins un agent dispersant. Advantageously, the lubricant composition according to the invention may also comprise at least one dispersing agent.
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. La composition lubrifiante de la présente invention peut également comprendre au moins un épaississant, comme par exemple le polyisobutylène ou ses dérivés. The dispersing agent may 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 weight of dispersing agent relative to the total mass of the lubricating composition. The lubricant composition of the present invention may also comprise at least one thickener, such as polyisobutylene or its derivatives.
Dans un mode de réalisation préféré, de l'invention, la composition lubrifiante comprend du polyisobutylène en tant qu'épaississant. In a preferred embodiment of the invention, the lubricating composition comprises polyisobutylene as a thickener.
Un tel mode de réalisation permet notamment d'améliorer encore les propriétés de détergence de la composition lubrifiante, notamment à haute température. Such an embodiment makes it possible in particular to further improve the detergency properties of the lubricant composition, especially at high temperature.
De manière avantageuse, la composition lubrifiante selon l'invention peut comprendre de 0,1 à 5 % en masse d'épaississant par rapport à la masse totale de la composition lubrifiante. La composition lubrifiante de 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. Advantageously, the lubricant composition according to the invention may comprise from 0.1 to 5% by weight of thickener relative to the total mass of the lubricant composition. The lubricating composition of the present invention may also comprise at least one viscosity index improving additive. Examples of additives improving the viscosity number include polymeric esters, homopolymers or copolymers, hydrogenated or non-hydrogenated, styrene, butadiene and isoprene, polyacrylates, polymethacrylates (PMA) or alternatively olefin copolymers, in particular ethylene / propylene copolymers.
La composition lubrifiante 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 according to the invention can be in various forms. The lubricant composition according to the invention may in particular be an anhydrous composition. Preferably, this lubricating composition is not an emulsion.
De préférence, la composition lubrifiante selon l'invention est caractérisée par un KV100 (mesurée selon la norme ASTM D445) supérieur ou égal à 12 cSt, de préférence de 12 à 17 cSt. La composition lubrifiante définie ci-dessus est utilisée pour lubrifier un moteur à gaz. Preferably, the lubricating composition according to the invention is characterized by a KV100 (measured according to ASTM D445) greater than or equal to 12 cSt, preferably from 12 to 17 cSt. The lubricant composition defined above is used to lubricate a gas engine.
La composition lubrifiante définie ci-dessus est utilisée pour lubrifier un moteur à gaz utilisant tout type de gaz, notamment de gaz présentant un nombre de méthane faible, de préférence inférieur à 80, plus avantageusement inférieur à 60.
Il est bien entendu que plus la valeur du nombre de méthane est faible, plus la qualité de combustion du gaz s'en trouve diminuée. The lubricant composition defined above is used to lubricate a gas engine using any type of gas, especially gas having a low methane number, preferably less than 80, more preferably less than 60. It is understood that the lower the value of the methane number, the lower the combustion quality of the gas.
Par moteur à gaz selon l'invention, on entend plus particulièrement : Gas engine according to the invention more particularly means:
- les moteurs à gaz stationnaires ; - stationary gas engines;
- les moteurs à gaz mobiles, notamment : - mobile gas engines, in particular:
les moteurs à gaz pour véhicules, incluant les véhicules poids-lourds ou les véhicules pour le transport en commun comme les bus mais également les véhicules marins comme les bateaux. gas engines for vehicles, including heavy goods vehicles or vehicles for public transport such as buses but also marine vehicles such as boats.
Dans un mode de réalisation préféré, la composition lubrifiante définie ci-dessus est utilisée pour lubrifier un moteur à gaz stationnaire. In a preferred embodiment, the lubricant composition defined above is used to lubricate a stationary gas engine.
L'invention a également pour objet l'utilisation d'au moins une huile de base minérale et d'au moins un ester choisi parmi les esters de polyols dans une composition lubrifiante pour lubrifier un moteur à gaz. The invention also relates to the use of at least one mineral base oil and at least one ester selected from polyol esters in a lubricating composition for lubricating a gas engine.
L'ensemble des caractéristiques et préférences décrites pour l'huile de base minérale, l'ester de polyol et le moteur à gaz ci-dessus s'appliquent également à cette utilisation. All the characteristics and preferences described for the mineral base oil, the polyol ester and the gas engine above also apply to this use.
L'invention a également pour objet un procédé de lubrification d'un moteur à gaz comprenant la mise en contact d'au moins une pièce mécanique du moteur avec une composition lubrifiante comprenant au moins une huile de base minérale et au moins un ester choisi parmi les esters de polyols. The invention also relates to a method of lubricating a gas engine comprising contacting at least one mechanical part of the engine with a lubricating composition comprising at least one mineral base oil and at least one ester chosen from polyol esters.
L'ensemble des caractéristiques et préférences décrites pour la composition lubrifiante et pour le moteur à gaz ci-dessus s'appliquent également à ce procédé. All of the features and preferences described for the lubricant composition and for the above gas engine also apply to this process.
Les différents aspects de l'invention peuvent être illustrés par les exemples non limitatifs qui suivent : The various aspects of the invention may be illustrated by the following nonlimiting examples:
Exemple 1 : préparation d'une composition lubrifiante selon l'invention Example 1 Preparation of a Lubricating Composition According to the Invention
On mélange les différentes composantes d'une composition lubrifiante selon l'invention CL1 en fonction de la nature et des quantités de produits présentées dans le tableau 1 . Les pourcentages indiqués correspondent à des pourcentages massiques.
Composition lubrifiante The various components of a lubricant composition according to the invention CL1 are mixed according to the nature and the quantities of products presented in Table 1. The percentages indicated correspond to mass percentages. Lubricating composition
selon l'invention CL1 (% according to the invention CL1 (%
massique) mass)
Huile groupe III (KV100 = 7,1 mm2/s 68,00 Group III oil (KV100 = 7.1 mm 2 / s 68.00
mesurée selon la norme ASTM D445) measured according to ASTM D445)
Ester de polyol (Priolube 1847®) 23,14 Polyol ester (Priolube 1847®) 23.14
Paquet d'additifs (anti-oxydant de type 8,86 Package of additives (anti-oxidant type 8,86
phénolique, abaisseur du point phenolic, point depressor
d'écoulement de type polymethacrylate, of polymethacrylate type flow,
anti-usure de type dithiophosphate de anti-wear type dithiophosphate
zinc, dispersant de type dérivé zinc, derivative type dispersant
succinimide, détergents de type succinimide, type detergents
sulfonate et phénate de calcium) sulphonate and calcium phenate)
Tableau 1 Table 1
Exemple 2 : évaluation de la tenue à l'oxydation de la composition lubrifiante CL1 Example 2 Evaluation of the Oxidation Performance of the CL1 Lubricating Composition
Cette évaluation consiste à soumettre la composition lubrifiante à une oxydation aux oxydes d'azote à une température de 150°C et pendant 48 heures. This evaluation consists in subjecting the lubricating composition to oxidation with nitrogen oxides at a temperature of 150 ° C. and for 48 hours.
La tenue à l'oxydation est évaluée par mesure de la différence de viscosité cinématique à 100°C mesurée selon la norme ASTM D445 avant et après oxydation et exprimée en pourcentage d'augmentation de viscosité ; plus le pourcentage est faible, meilleure est la tenue à l'oxydation The resistance to oxidation is evaluated by measuring the difference in kinematic viscosity at 100 ° C. measured according to ASTM D445 before and after oxidation and expressed as a percentage of increase in viscosity; the lower the percentage, the better the resistance to oxidation
Un pourcentage d'augmentation de viscosité inférieur ou égal à 35% correspond à une tenue à l'oxydation acceptable. A percentage increase in viscosity of less than or equal to 35% corresponds to acceptable oxidation resistance.
Les résultats sont décrits dans le tableau 2.
The results are described in Table 2.
Tableau 2 Table 2
Les résultats montrent qu'une composition lubrifiante selon l'invention présente une tenue à l'oxydation acceptable.
Exemple 3 : préparation de compositions lubrifiantes selon l'invention The results show that a lubricating composition according to the invention has an acceptable resistance to oxidation. Example 3 Preparation of Lubricating Compositions According to the Invention
On mélange les différentes composantes des compositions lubrifiantes selon l'invention CL2, CL3 et CL4 et de la composition lubrifiante comparative CC1 en fonction de la nature et des quantités de produits présentées dans le tableau 3. The various components of the lubricating compositions according to the invention CL2, CL3 and CL4 and the comparative lubricating composition CC1 are mixed according to the nature and amounts of the products presented in Table 3.
Les pourcentages indiqués correspondent à des pourcentages massiques. The percentages indicated correspond to mass percentages.
Tableau 3
Exemple 4 : évaluation de stabilité au stockage des compositions lubrifiantes CL2, CL3 et CL4 Table 3 Example 4 Storage Stability Evaluation of CL2, CL3 and CL4 Lubricating Compositions
Cette évaluation visuelle est réalisée à température ambiante et se base sur l'apparition de trouble dans la composition. This visual evaluation is performed at room temperature and is based on the appearance of haze in the composition.
Les résultats sont décrits dans le tableau 4.
The results are described in Table 4.
Tableau 4 Table 4
Les résultats montrent que les compositions lubrifiantes selon l'invention sont stables dans le temps. The results show that the lubricant compositions according to the invention are stable over time.
Exemple 5 : évaluation des propriétés de détergence des compositions lubrifiantes CL2 et CC1 EXAMPLE 5 Evaluation of the Detergent Properties of Lubricating Compositions CL2 and CC1
Cette évaluation est effectuée par un essai PCT selon la norme GFC Lu29-A-15. This evaluation is performed by a PCT test according to GFC Lu29-A-15.
Plus la valeur de la cotation est élevée, meilleures sont les propriétés de détergence de la composition lubrifiante. The higher the value of the rating, the better the detergency properties of the lubricant composition.
Les résultats sont décrits dans le tableau 5.
The results are described in Table 5.
Tableau 5 Table 5
Les résultats montrent que les compositions lubrifiantes selon l'invention présentent des propriétés de détergence améliorées, notamment à haute température. The results show that the lubricant compositions according to the invention have improved detergency properties, especially at high temperature.
Exemple 6 : préparation de compositions lubrifiantes selon l'invention Example 6 Preparation of Lubricating Compositions According to the Invention
On mélange les différentes composantes des compositions lubrifiantes selon l'invention The various components of the lubricant compositions according to the invention are mixed
CL5, CL6, CL7, CL8, CL9 et CL10 et de la composition lubrifiante comparative CC2 en fonction de la nature et des quantités de produits présentées dans le tableau 6. CL5, CL6, CL7, CL8, CL9 and CL10 and comparative lubricant composition CC2 depending on the nature and amounts of products shown in Table 6.
Les pourcentages indiqués correspondent à des pourcentages massiques.
Q. c The percentages indicated correspond to mass percentages. Q. c
E o o CD E o o CD
C/5 O CD O ϋ « C / 5 O CD O ϋ «
Huile groupe II Group II oil
(KV100 = 10,2 mm2/s 81 ,14 78,74 81 ,14 78,74 81 ,14 78,74 mesurée selon la (KV100 = 10.2 mm 2 / s 81, 14 78.74 81, 14 78.74 81, 14 78.74 measured according to the
norme ASTM D445) ASTM D445 standard)
Ester de polyol Polyol ester
(Priolube 1847® 10,00 10,00 (Priolube 1847 ® 10.00 10.00
commercialisé par la marketed by the
société CRODA) CRODA company)
Ester de polyol Polyol ester
(Nycobase 10,00 10,00 (Nycobase 10.00 10.00
8851 ® commercialisé 8851 ® marketed
par la société NYCO) by NYCO)
Ester de polyol Polyol ester
(Radialube 7250® 10,00 10,00 commercialisé par la (Radialube 7250 ® 10.00 10.00 marketed by the
société OLEON) OLEON company)
Polyisobutylène polyisobutylene
(Indopol H2100® 2,40 2,40 2,40 commercialisé par la (Indopol H2100 ® 2.40 2.40 2.40 marketed by the
société INEOS) INEOS company)
Paquet d'additifs Package of additives
(anti-oxydant de type (anti-oxidant type
phénolique, phenolic,
abaisseur du point point depressor
d'écoulement de type type flow
polymethacrylate, polymethyl,
anti-usure de type 8,86 8,86 8,86 8,86 8,86 8,86 dithiophosphate de anti-wear type 8,86 8,86 8,86 8,86 8,86 8,86 dithiophosphate
zinc, dispersant de zinc, dispersant
type dérivé derived type
succinimide, succinimide
détergents de type type detergents
sulfonate et phénate sulfonate and phenate
de calcium) calcium)
Tableau 6
Exemple 7 : évaluation de stabilité au stockage des compositions lubrifiantes CL5, CL6, CL7, CL8, CL9 et CU O Table 6 Example 7 Storage Stability Evaluation of the CL5, CL6, CL7, CL8, CL9 and CU O Lubricating Compositions
Cette évaluation visuelle est identique à celle de l'exemple 4. This visual evaluation is identical to that of example 4.
Les résultats sont décrits dans le tableau 7.
The results are described in Table 7.
Tableau 7 Table 7
Les résultats montrent que les compositions lubrifiantes selon l'invention sont stables dans le temps. The results show that the lubricant compositions according to the invention are stable over time.
Exemple 8 : évaluation de la tenue à l'oxydation des compositions lubrifiantes CL5, CL6,EXAMPLE 8 Evaluation of the Oxidation Performance of Lubricating Compositions CL5, CL6
CL8. CL9. CL10 et de la composition lubrifiante CC2 CL8. CL9. CL10 and CC2 lubricant composition
Cette évaluation est identique à celle décrite dans l'exemple 2. This evaluation is identical to that described in Example 2.
Les résultats sont décrits dans le tableau 8. The results are described in Table 8.
Tableau 8 Table 8
Les résultats montrent qu'une composition lubrifiante selon l'invention présente une bonne tenue à l'oxydation. The results show that a lubricant composition according to the invention has a good resistance to oxidation.
Exemple 9 : évaluation des propriétés de déterqence des compositions lubrifiantes CL5, CL7 et CL9 Example 9 Evaluation of the Detergent Properties of the CL5, CL7 and CL9 Lubricating Compositions
Cette évaluation est identique à celle décrite dans l'exemple 5. This evaluation is identical to that described in Example 5.
Les résultats sont décrits dans le tableau 9.
The results are described in Table 9.
Tableau 9 Table 9
Les résultats montrent que les compositions lubrifiantes selon l'invention présentent des propriétés de détergence améliorées, notamment à haute température. The results show that the lubricant compositions according to the invention have improved detergency properties, especially at high temperature.
Exemple 10 : évaluation des propriétés de déterqence des compositions lubrifiantes CL5EXAMPLE 10 Evaluation of the Detergent Properties of the CL5 Lubricating Compositions
CL6. CL7. CL8. CL9 et CLI O CL6. CL7. CL8. CL9 and CLI O
Cette évaluation est effectuée par un essai MCT selon la norme GFC L-27-T-07
Plus la valeur de la cotation est élevée, meilleures sont les propriétés de détergence de la composition lubrifiante. This evaluation is performed by an MCT test according to GFC L-27-T-07 The higher the value of the rating, the better the detergency properties of the lubricant composition.
Plus la température d'apparition des premiers vernis est élevée, meilleure sont les propriétés de détergence à haute température. The higher the appearance temperature of the first varnishes, the better the detergency properties at high temperatures.
Les résultats sont décrits dans le tableau 10. The results are described in Table 10.
Tableau 10 Table 10
Les résultats montrent que les compositions lubrifiantes selon l'invention présentent des propriétés de détergence améliorées, notamment à haute température. The results show that the lubricant compositions according to the invention have improved detergency properties, especially at high temperature.
Les résultats montrent également que l'ajout de polyisobutyène permet d'améliorer encore les propriétés de détergence, notamment à haute température. The results also show that the addition of polyisobutyene makes it possible to further improve the detergency properties, especially at high temperature.
Exemple 1 1 : préparation d'une composition lubrifiante selon l'invention Example 1 1: Preparation of a lubricant composition according to the invention
On mélange les différentes composantes de la composition lubrifiante selon l'invention CL1 1 en fonction de la nature et des quantités de produits présentées dans le tableau 1 1 . Les pourcentages indiqués correspondent à des pourcentages massiques. The various components of the lubricant composition according to the invention CL1 1 are mixed according to the nature and the quantities of products presented in Table 1 1. The percentages indicated correspond to mass percentages.
Tableau 1 1
Exemple 12 : évaluation de la tenue à l'oxydation de la composition lubrifiante CL1 1 Table 1 1 Example 12: Evaluation of the oxidation resistance of the lubricant composition CL1 1
Cette évaluation est identique à celle décrite dans l'exemple 2. This evaluation is identical to that described in Example 2.
Les résultats sont décrits dans le tableau 12.
The results are described in Table 12.
Tableau 12 Table 12
Les résultats montrent qu'une composition lubrifiante selon l'invention présente une bonne tenue à l'oxydation. The results show that a lubricant composition according to the invention has a good resistance to oxidation.
Exemple 13 : évaluation des propriétés de déterqence de la composition lubrifiante CL1 1 Cette évaluation est identique à celles décrites dans l'exemple 5 et dans l'exemple 10. Les résultats sont décrits dans le tableau 13. Example 13: Evaluation of the properties of detergency of the lubricating composition CL1 1 This evaluation is identical to those described in Example 5 and in Example 10. The results are described in Table 13.
Tableau 13 Table 13
Les résultats montrent que les compositions lubrifiantes selon l'invention présentent des propriétés de détergence améliorées, notamment à haute température.
The results show that the lubricant compositions according to the invention have improved detergency properties, especially at high temperature.
Claims
1 . Utilisation d'une composition lubrifiante comprenant au moins une huile de base minérale et au moins un ester choisi parmi les esters de polyols pour lubrifier un moteur à gaz, la composition étant caractérisée en ce qu'elle comprend au moins 50% en poids d'huile de base minérale et au moins 5% en poids d'ester de polyol par rapport au poids total de la composition lubrifiante. 1. Use of a lubricating composition comprising at least one mineral base oil and at least one ester chosen from polyol esters for lubricating a gas engine, the composition being characterized in that it comprises at least 50% by weight of mineral base oil and at least 5% by weight of polyol ester based on the total weight of the lubricating composition.
2. Utilisation selon la revendication 1 dans laquelle le moteur à gaz est un moteur à gaz stationnaire. 2. Use according to claim 1 wherein the gas engine is a stationary gas engine.
3. Utilisation selon la revendication 1 ou 2 dans laquelle l'huile de base minérale est choisie parmi une huile de base de groupe II ou une huile de base de groupe III selon la classification API, préférentiellement une huile de base de groupe II selon la classification API. 3. Use according to claim 1 or 2 wherein the mineral base oil is selected from a Group II base oil or a Group III base oil according to the API classification, preferably a Group II base oil according to the invention. API classification.
4. Utilisation selon l'une quelconque des revendications précédentes dans laquelle la composition lubrifiante comprend de 50% à 90% en poids, d'huile de base minérale par rapport au poids total de la composition lubrifiante. 4. Use according to any one of the preceding claims wherein the lubricating composition comprises from 50% to 90% by weight of mineral base oil based on the total weight of the lubricating composition.
5. Utilisation selon l'une quelconque des revendications précédentes dans laquelle l'ester est choisi parmi les esters de polyols et d'acides carboxyliques saturés ou insaturés, linéaires ou ramifiés comprenant au moins 8 atomes de carbone. 5. Use according to any one of the preceding claims wherein the ester is selected from saturated or unsaturated, linear or branched polyol esters of carboxylic acids comprising at least 8 carbon atoms.
6. Utilisation selon la revendication 5 dans laquelle l'acide carboxylique est un acide monocarboxylique saturé ou insaturé, linéaire ou ramifié. 6. Use according to claim 5 wherein the carboxylic acid is a saturated or unsaturated monocarboxylic acid, linear or branched.
7. Utilisation selon la revendication précédente dans laquelle l'acide carboxylique comprend de 8 à 20 atomes de carbone, préférentiellement de 8 à 18 atomes de carbone. 7. Use according to the preceding claim wherein the carboxylic acid comprises from 8 to 20 carbon atoms, preferably from 8 to 18 carbon atoms.
8. Utilisation selon l'une quelconque des revendications précédentes dans laquelle le polyol comprend au moins 3 groupements -OH, préférentiellement de 3 à 8 groupements -OH.
8. Use according to any one of the preceding claims wherein the polyol comprises at least 3 -OH groups, preferably 3 to 8 -OH groups.
9. Utilisation selon l'une quelconque des revendications précédentes dans laquelle le polyol comprend de 3 à 10 atomes de carbone. 9. Use according to any one of the preceding claims wherein the polyol comprises from 3 to 10 carbon atoms.
10. Utilisation selon l'une quelconque des revendications précédentes dans laquelle l'ester de polyol comprend un mélange d'au moins un premier ester de polyol et d'acide monocarboxylique selon l'une quelconque des revendications 6 à 9 et d'au moins un second ester de polyol et d'acide monocarboxylique selon l'une quelconque des revendications 6 à 9 et différent du premier ester. Use according to any one of the preceding claims wherein the polyol ester comprises a mixture of at least a first polyol ester and a monocarboxylic acid ester according to any of claims 6 to 9 and at least one a second polyol and monocarboxylic acid ester according to any one of claims 6 to 9 and different from the first ester.
1 1 . Utilisation selon l'une quelconque des revendications précédentes dans laquelle l'ester est obtenu par réaction d'estérification entre un polyol selon la revendication 8 ou 9, au moins un premier acide monocarboxylique selon la revendication 6 ou 7 et au moins un second acide carboxylique choisi parmi les acides dicarboxyliques linéaires ou ramifiés, saturés ou insaturés comprenant au moins 16 atomes de carbone. 1 1. Use according to any one of the preceding claims wherein the ester is obtained by esterification reaction between a polyol according to claim 8 or 9, at least a first monocarboxylic acid according to claim 6 or 7 and at least a second carboxylic acid. selected from linear or branched, saturated or unsaturated dicarboxylic acids comprising at least 16 carbon atoms.
12. Utilisation selon l'une quelconque des revendications précédentes dans laquelle la composition lubrifiante comprend de 5 à 30%, avantageusement de 5 à 25% ou de 5 à 15% en poids d'ester de polyol par rapport au poids total de la composition lubrifiante. 12. Use according to any one of the preceding claims wherein the lubricating composition comprises from 5 to 30%, advantageously from 5 to 25% or from 5 to 15% by weight of polyol ester relative to the total weight of the composition. lubricating.
13. Utilisation selon l'une quelconque des revendications précédentes dans laquelle la composition lubrifiante comprend en outre du polyisobutylène. Use according to any one of the preceding claims wherein the lubricating composition further comprises polyisobutylene.
14. Utilisation d'au moins une huile de base minérale et d'au moins un ester choisi parmi les esters de polyols dans une composition lubrifiante pour lubrifier un moteur à gaz. 14. Use of at least one mineral base oil and at least one ester selected from polyol esters in a lubricating composition for lubricating a gas engine.
15. Procédé de lubrification d'un moteur à gaz comprenant la mise en contact d'au moins une pièce mécanique du moteur avec une composition lubrifiante comprenant au moins une huile de base minérale et au moins un ester choisi parmi les esters de polyols, la composition étant caractérisée en ce qu'elle comprend au moins 50% en poids d'huile de base minérale et au moins 5% en poids d'ester de polyol par rapport au poids total de la composition lubrifiante.
15. A method of lubricating a gas engine comprising contacting at least one mechanical part of the engine with a lubricating composition comprising at least one mineral base oil and at least one ester chosen from polyol esters, composition being characterized in that it comprises at least 50% by weight of mineral base oil and at least 5% by weight of polyol ester relative to the total weight of the lubricating composition.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1656524A FR3053697B1 (en) | 2016-07-07 | 2016-07-07 | LUBRICATING COMPOSITION FOR GAS ENGINE |
| PCT/EP2017/066886 WO2018007497A1 (en) | 2016-07-07 | 2017-07-06 | Lubricant composition for a gas engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3481927A1 true EP3481927A1 (en) | 2019-05-15 |
| EP3481927B1 EP3481927B1 (en) | 2023-12-27 |
Family
ID=56920792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17735149.1A Active EP3481927B1 (en) | 2016-07-07 | 2017-07-06 | Lubricant composition for a gas engine |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US11697785B2 (en) |
| EP (1) | EP3481927B1 (en) |
| JP (2) | JP2019520461A (en) |
| KR (1) | KR102416394B1 (en) |
| CN (1) | CN109477020A (en) |
| FR (1) | FR3053697B1 (en) |
| SG (1) | SG11201900037PA (en) |
| WO (1) | WO2018007497A1 (en) |
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|---|---|---|---|---|
| WO2019025561A1 (en) | 2017-08-03 | 2019-02-07 | Universität Regensburg | Fuel derived from renewable resources |
| JP7454438B2 (en) * | 2020-04-23 | 2024-03-22 | カヤバ株式会社 | How to adjust the frictional characteristics of shock absorbers and lubricating oil for shock absorbers |
Family Cites Families (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6057480B2 (en) * | 1977-10-31 | 1985-12-14 | 日本油脂株式会社 | Lubricant for internal combustion engines using neopentyl polyol ester as a base oil |
| JPH0730345B2 (en) * | 1986-09-08 | 1995-04-05 | 出光興産株式会社 | Lubricating oil composition |
| US5458794A (en) | 1993-09-30 | 1995-10-17 | The Lubrizol Corporation | Lubricants containing carboxylic esters from polyhydroxy compounds, suitable for ceramic-containing engines |
| BR9504838A (en) * | 1994-11-15 | 1997-10-07 | Lubrizol Corp | Polyol ester lubricating oil composition |
| JPH0971795A (en) * | 1995-09-06 | 1997-03-18 | Nippon Oil Co Ltd | Lubricating oil composition for gas engine |
| ZA97222B (en) * | 1996-01-16 | 1998-02-18 | Lubrizol Corp | Lubricating compositions. |
| JP3961650B2 (en) * | 1997-11-19 | 2007-08-22 | 株式会社コスモ総合研究所 | Gas engine oil |
| JP2000008061A (en) | 1998-06-19 | 2000-01-11 | Asahi Denka Kogyo Kk | Lubricant base oil |
| US6180575B1 (en) * | 1998-08-04 | 2001-01-30 | Mobil Oil Corporation | High performance lubricating oils |
| US20070184991A1 (en) * | 2002-01-31 | 2007-08-09 | Winemiller Mark D | Lubricating oil compositions with improved friction properties |
| WO2004087847A1 (en) * | 2003-03-31 | 2004-10-14 | New Japan Chemical Co., Ltd. | Lubricant and lubrication method |
| US7018962B2 (en) * | 2003-06-12 | 2006-03-28 | Infineum International Limited | Viscosity index improver concentrates |
| US7732386B2 (en) * | 2005-10-25 | 2010-06-08 | Chevron U.S.A. Inc. | Rust inhibitor for highly paraffinic lubricating base oil |
| US8680030B2 (en) * | 2005-11-18 | 2014-03-25 | Exxonmobil Research And Engineering Company | Enhanced deposit control for lubricating oils used under sustained high load conditions employing glycerine derivative with a grafted hindered phenolic and/or a hindered phenolic containing a thioether group |
| DE102006027602A1 (en) * | 2006-06-13 | 2007-12-20 | Cognis Ip Management Gmbh | Lubricant compositions containing complex esters |
| CN101583702B (en) | 2006-12-21 | 2013-11-13 | 卢布里佐尔公司 | Lubricant for hydrogen-fueled engines |
| FR2924439B1 (en) | 2007-12-03 | 2010-10-22 | Total France | LUBRICATING COMPOSITION FOR FOUR-STROKE ENGINE WITH LOW ASH RATES |
| JP5288861B2 (en) * | 2008-04-07 | 2013-09-11 | Ｊｘ日鉱日石エネルギー株式会社 | Lubricating oil composition |
| US20100210487A1 (en) * | 2009-02-16 | 2010-08-19 | Chemtura Coproration | Fatty sorbitan ester based friction modifiers |
| JP5431805B2 (en) | 2009-06-24 | 2014-03-05 | 富士フイルム株式会社 | Composition, compound and film forming method |
| EP2441818A1 (en) * | 2010-10-12 | 2012-04-18 | Shell Internationale Research Maatschappij B.V. | Lubricating composition |
| DK2607462T3 (en) * | 2011-12-20 | 2014-03-31 | Infineum Int Ltd | Ship engine lubrication |
| US9677022B2 (en) * | 2014-08-19 | 2017-06-13 | Croda, Inc. | Lubricant base stock |
-
2016
- 2016-07-07 FR FR1656524A patent/FR3053697B1/en active Active
-
2017
- 2017-07-06 SG SG11201900037PA patent/SG11201900037PA/en unknown
- 2017-07-06 KR KR1020197000329A patent/KR102416394B1/en active IP Right Grant
- 2017-07-06 WO PCT/EP2017/066886 patent/WO2018007497A1/en unknown
- 2017-07-06 US US16/314,997 patent/US11697785B2/en active Active
- 2017-07-06 CN CN201780042080.9A patent/CN109477020A/en active Pending
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Also Published As
| Publication number | Publication date |
|---|---|
| KR102416394B1 (en) | 2022-07-06 |
| CN109477020A (en) | 2019-03-15 |
| JP2019520461A (en) | 2019-07-18 |
| FR3053697B1 (en) | 2019-08-16 |
| US20190203152A1 (en) | 2019-07-04 |
| FR3053697A1 (en) | 2018-01-12 |
| SG11201900037PA (en) | 2019-02-27 |
| KR20190023066A (en) | 2019-03-07 |
| EP3481927B1 (en) | 2023-12-27 |
| US11697785B2 (en) | 2023-07-11 |
| WO2018007497A1 (en) | 2018-01-11 |
| JP7203168B2 (en) | 2023-01-12 |
| JP2021185245A (en) | 2021-12-09 |
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