EP0286996B2 - Lubricating oil composition - Google Patents
Lubricating oil composition Download PDFInfo
- Publication number
- EP0286996B2 EP0286996B2 EP88105669A EP88105669A EP0286996B2 EP 0286996 B2 EP0286996 B2 EP 0286996B2 EP 88105669 A EP88105669 A EP 88105669A EP 88105669 A EP88105669 A EP 88105669A EP 0286996 B2 EP0286996 B2 EP 0286996B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- acid esters
- oil
- fatty acid
- composition
- acid
- 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.)
- Expired - Lifetime
Links
- 239000000203 mixture Substances 0.000 title claims description 43
- 239000010687 lubricating oil Substances 0.000 title claims description 31
- -1 amine salts Chemical class 0.000 claims description 39
- 239000003921 oil Chemical class 0.000 claims description 34
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 32
- 239000000194 fatty acid Substances 0.000 claims description 32
- 229930195729 fatty acid Natural products 0.000 claims description 32
- 239000002199 base oil Substances 0.000 claims description 28
- 238000011282 treatment Methods 0.000 claims description 19
- 150000001875 compounds Chemical class 0.000 claims description 16
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical class OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 13
- 150000003014 phosphoric acid esters Chemical class 0.000 claims description 12
- 239000003607 modifier Substances 0.000 claims description 10
- 150000001735 carboxylic acids Chemical class 0.000 claims description 9
- 239000002480 mineral oil Substances 0.000 claims description 9
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 claims description 8
- 125000003118 aryl group Chemical group 0.000 claims description 8
- 235000010446 mineral oil Nutrition 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerol Natural products OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 5
- 150000001733 carboxylic acid esters Chemical class 0.000 claims description 5
- 235000011187 glycerol Nutrition 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- 239000011593 sulfur Substances 0.000 claims description 5
- 229910052717 sulfur Inorganic materials 0.000 claims description 5
- 150000001298 alcohols Chemical class 0.000 claims description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 4
- 239000003925 fat Chemical class 0.000 claims description 4
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 4
- 150000005691 triesters Chemical class 0.000 claims description 4
- 150000001990 dicarboxylic acid derivatives Chemical class 0.000 claims 1
- 235000019198 oils Nutrition 0.000 description 31
- 230000005540 biological transmission Effects 0.000 description 16
- 238000000034 method Methods 0.000 description 15
- 238000005984 hydrogenation reaction Methods 0.000 description 9
- 230000003647 oxidation Effects 0.000 description 9
- 238000007254 oxidation reaction Methods 0.000 description 9
- 239000002253 acid Substances 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 8
- UKMSUNONTOPOIO-UHFFFAOYSA-N docosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCCC(O)=O UKMSUNONTOPOIO-UHFFFAOYSA-N 0.000 description 8
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 8
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 7
- 150000004665 fatty acids Chemical class 0.000 description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 description 6
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 6
- GHVNFZFCNZKVNT-UHFFFAOYSA-N decanoic acid Chemical compound CCCCCCCCCC(O)=O GHVNFZFCNZKVNT-UHFFFAOYSA-N 0.000 description 6
- 239000003599 detergent Substances 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- 230000035939 shock Effects 0.000 description 6
- 238000004821 distillation Methods 0.000 description 5
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 5
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 4
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 4
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 4
- 235000021357 Behenic acid Nutrition 0.000 description 4
- 239000005639 Lauric acid Substances 0.000 description 4
- OYHQOLUKZRVURQ-HZJYTTRNSA-N Linoleic acid Chemical compound CCCCC\C=C/C\C=C/CCCCCCCC(O)=O OYHQOLUKZRVURQ-HZJYTTRNSA-N 0.000 description 4
- 239000005642 Oleic acid Substances 0.000 description 4
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 4
- 235000021314 Palmitic acid Nutrition 0.000 description 4
- 235000021355 Stearic acid Nutrition 0.000 description 4
- 229940116226 behenic acid Drugs 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 4
- 229940033355 lauric acid Drugs 0.000 description 4
- 229960004232 linoleic acid Drugs 0.000 description 4
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 4
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 4
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 4
- 229960002969 oleic acid Drugs 0.000 description 4
- 229940098695 palmitic acid Drugs 0.000 description 4
- 238000000638 solvent extraction Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 239000008117 stearic acid Substances 0.000 description 4
- 229960004274 stearic acid Drugs 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- TUNFSRHWOTWDNC-HKGQFRNVSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCC[14C](O)=O TUNFSRHWOTWDNC-HKGQFRNVSA-N 0.000 description 4
- 239000005632 Capric acid (CAS 334-48-5) Substances 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 239000003963 antioxidant agent Substances 0.000 description 3
- 230000003078 antioxidant effect Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 239000002270 dispersing agent Substances 0.000 description 3
- 235000019197 fats Nutrition 0.000 description 3
- 150000003949 imides Chemical class 0.000 description 3
- 235000021313 oleic acid Nutrition 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- 239000010452 phosphate Substances 0.000 description 3
- 238000013112 stability test Methods 0.000 description 3
- BVUXDWXKPROUDO-UHFFFAOYSA-N 2,6-di-tert-butyl-4-ethylphenol Chemical compound CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 BVUXDWXKPROUDO-UHFFFAOYSA-N 0.000 description 2
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 2
- 244000060011 Cocos nucifera Species 0.000 description 2
- 235000013162 Cocos nucifera Nutrition 0.000 description 2
- 238000010306 acid treatment Methods 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 239000010775 animal oil Substances 0.000 description 2
- 239000002518 antifoaming agent Substances 0.000 description 2
- 229910052788 barium Inorganic materials 0.000 description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 235000015278 beef Nutrition 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 235000010354 butylated hydroxytoluene Nutrition 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 239000003240 coconut oil Substances 0.000 description 2
- 235000019864 coconut oil Nutrition 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 150000001991 dicarboxylic acids Chemical class 0.000 description 2
- 150000005690 diesters Chemical class 0.000 description 2
- SNRUBQQJIBEYMU-UHFFFAOYSA-N dodecane Chemical compound CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- HNRMPXKDFBEGFZ-UHFFFAOYSA-N ethyl trimethyl methane Natural products CCC(C)(C)C HNRMPXKDFBEGFZ-UHFFFAOYSA-N 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 description 2
- FBUKVWPVBMHYJY-UHFFFAOYSA-N nonanoic acid Chemical compound CCCCCCCCC(O)=O FBUKVWPVBMHYJY-UHFFFAOYSA-N 0.000 description 2
- GLDOVTGHNKAZLK-UHFFFAOYSA-N octadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 0.000 description 2
- 235000019865 palm kernel oil Nutrition 0.000 description 2
- 239000003346 palm kernel oil Substances 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229920013639 polyalphaolefin Polymers 0.000 description 2
- 229920000193 polymethacrylate Polymers 0.000 description 2
- YPFDHNVEDLHUCE-UHFFFAOYSA-N propane-1,3-diol Chemical compound OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 2
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 239000003760 tallow Substances 0.000 description 2
- HLZKNKRTKFSKGZ-UHFFFAOYSA-N tetradecan-1-ol Chemical compound CCCCCCCCCCCCCCO HLZKNKRTKFSKGZ-UHFFFAOYSA-N 0.000 description 2
- VHOCUJPBKOZGJD-UHFFFAOYSA-N triacontanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC(O)=O VHOCUJPBKOZGJD-UHFFFAOYSA-N 0.000 description 2
- 235000015112 vegetable and seed oil Nutrition 0.000 description 2
- 239000008158 vegetable oil Substances 0.000 description 2
- CUNWUEBNSZSNRX-RKGWDQTMSA-N (2r,3r,4r,5s)-hexane-1,2,3,4,5,6-hexol;(z)-octadec-9-enoic acid Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO.OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO.CCCCCCCC\C=C/CCCCCCCC(O)=O.CCCCCCCC\C=C/CCCCCCCC(O)=O.CCCCCCCC\C=C/CCCCCCCC(O)=O CUNWUEBNSZSNRX-RKGWDQTMSA-N 0.000 description 1
- ALSTYHKOOCGGFT-KTKRTIGZSA-N (9Z)-octadecen-1-ol Chemical compound CCCCCCCC\C=C/CCCCCCCCO ALSTYHKOOCGGFT-KTKRTIGZSA-N 0.000 description 1
- OYHQOLUKZRVURQ-NTGFUMLPSA-N (9Z,12Z)-9,10,12,13-tetratritiooctadeca-9,12-dienoic acid Chemical compound C(CCCCCCC\C(=C(/C\C(=C(/CCCCC)\[3H])\[3H])\[3H])\[3H])(=O)O OYHQOLUKZRVURQ-NTGFUMLPSA-N 0.000 description 1
- QGLWBTPVKHMVHM-KTKRTIGZSA-N (z)-octadec-9-en-1-amine Chemical class CCCCCCCC\C=C/CCCCCCCCN QGLWBTPVKHMVHM-KTKRTIGZSA-N 0.000 description 1
- ZORQXIQZAOLNGE-UHFFFAOYSA-N 1,1-difluorocyclohexane Chemical compound FC1(F)CCCCC1 ZORQXIQZAOLNGE-UHFFFAOYSA-N 0.000 description 1
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 1
- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 description 1
- RZRNAYUHWVFMIP-KTKRTIGZSA-N 1-oleoylglycerol Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCC(O)CO RZRNAYUHWVFMIP-KTKRTIGZSA-N 0.000 description 1
- FRPZMMHWLSIFAZ-UHFFFAOYSA-N 10-undecenoic acid Chemical compound OC(=O)CCCCCCCCC=C FRPZMMHWLSIFAZ-UHFFFAOYSA-N 0.000 description 1
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 description 1
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 1
- XACKAZKMZQZZDT-MDZDMXLPSA-N 2-[(e)-octadec-9-enyl]butanedioic acid Chemical compound CCCCCCCC\C=C\CCCCCCCCC(C(O)=O)CC(O)=O XACKAZKMZQZZDT-MDZDMXLPSA-N 0.000 description 1
- 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 1
- LJKDOMVGKKPJBH-UHFFFAOYSA-N 2-ethylhexyl dihydrogen phosphate Chemical compound CCCCC(CC)COP(O)(O)=O LJKDOMVGKKPJBH-UHFFFAOYSA-N 0.000 description 1
- ZPJDFKVKOFGAFV-UHFFFAOYSA-N 2-octadecylbutanedioic acid Chemical compound CCCCCCCCCCCCCCCCCCC(C(O)=O)CC(O)=O ZPJDFKVKOFGAFV-UHFFFAOYSA-N 0.000 description 1
- MDWVSAYEQPLWMX-UHFFFAOYSA-N 4,4'-Methylenebis(2,6-di-tert-butylphenol) Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 MDWVSAYEQPLWMX-UHFFFAOYSA-N 0.000 description 1
- XZIIFPSPUDAGJM-UHFFFAOYSA-N 6-chloro-2-n,2-n-diethylpyrimidine-2,4-diamine Chemical compound CCN(CC)C1=NC(N)=CC(Cl)=N1 XZIIFPSPUDAGJM-UHFFFAOYSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- DPUOLQHDNGRHBS-UHFFFAOYSA-N Brassidinsaeure Natural products CCCCCCCCC=CCCCCCCCCCCCC(O)=O DPUOLQHDNGRHBS-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 1
- URXZXNYJPAJJOQ-UHFFFAOYSA-N Erucic acid Natural products CCCCCCC=CCCCCCCCCCCCC(O)=O URXZXNYJPAJJOQ-UHFFFAOYSA-N 0.000 description 1
- MQHWFIOJQSCFNM-UHFFFAOYSA-L Magnesium salicylate Chemical compound [Mg+2].OC1=CC=CC=C1C([O-])=O.OC1=CC=CC=C1C([O-])=O MQHWFIOJQSCFNM-UHFFFAOYSA-L 0.000 description 1
- XQVWYOYUZDUNRW-UHFFFAOYSA-N N-Phenyl-1-naphthylamine Chemical compound C=1C=CC2=CC=CC=C2C=1NC1=CC=CC=C1 XQVWYOYUZDUNRW-UHFFFAOYSA-N 0.000 description 1
- 235000019482 Palm oil Nutrition 0.000 description 1
- 239000005643 Pelargonic acid Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920002367 Polyisobutene Polymers 0.000 description 1
- 235000019484 Rapeseed oil Nutrition 0.000 description 1
- 235000019774 Rice Bran oil Nutrition 0.000 description 1
- HVUMOYIDDBPOLL-XWVZOOPGSA-N Sorbitan monostearate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O HVUMOYIDDBPOLL-XWVZOOPGSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- TTZKGYULRVDFJJ-GIVMLJSASA-N [(2r)-2-[(2s,3r,4s)-3,4-dihydroxyoxolan-2-yl]-2-[(z)-octadec-9-enoyl]oxyethyl] (z)-octadec-9-enoate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](OC(=O)CCCCCCC\C=C/CCCCCCCC)[C@H]1OC[C@H](O)[C@H]1O TTZKGYULRVDFJJ-GIVMLJSASA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- CEGOLXSVJUTHNZ-UHFFFAOYSA-K aluminium tristearate Chemical compound [Al+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CEGOLXSVJUTHNZ-UHFFFAOYSA-K 0.000 description 1
- 229940063655 aluminum stearate Drugs 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- FLAJFZXTYPQIBY-CLFAGFIQSA-N bis[(z)-octadec-9-enyl] hydrogen phosphite Chemical compound CCCCCCCC\C=C/CCCCCCCCOP(O)OCCCCCCCC\C=C/CCCCCCCC FLAJFZXTYPQIBY-CLFAGFIQSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- FJTUUPVRIANHEX-UHFFFAOYSA-N butan-1-ol;phosphoric acid Chemical compound CCCCO.OP(O)(O)=O FJTUUPVRIANHEX-UHFFFAOYSA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- AVVIDTZRJBSXML-UHFFFAOYSA-L calcium;2-carboxyphenolate;dihydrate Chemical compound O.O.[Ca+2].OC1=CC=CC=C1C([O-])=O.OC1=CC=CC=C1C([O-])=O AVVIDTZRJBSXML-UHFFFAOYSA-L 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
- BELZJFWUNQWBES-UHFFFAOYSA-N caldopentamine Chemical compound NCCCNCCCNCCCNCCCN BELZJFWUNQWBES-UHFFFAOYSA-N 0.000 description 1
- KHAVLLBUVKBTBG-UHFFFAOYSA-N caproleic acid Natural products OC(=O)CCCCCCCC=C KHAVLLBUVKBTBG-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000009903 catalytic hydrogenation reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- UZEFVQBWJSFOFE-UHFFFAOYSA-N dibutyl hydrogen phosphite Chemical compound CCCCOP(O)OCCCC UZEFVQBWJSFOFE-UHFFFAOYSA-N 0.000 description 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- FYOYCZHNDCCGCE-UHFFFAOYSA-N diphenyl hydrogen phosphite Chemical compound C=1C=CC=CC=1OP(O)OC1=CC=CC=C1 FYOYCZHNDCCGCE-UHFFFAOYSA-N 0.000 description 1
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- DPUOLQHDNGRHBS-KTKRTIGZSA-N erucic acid Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(O)=O DPUOLQHDNGRHBS-KTKRTIGZSA-N 0.000 description 1
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- FAGUFWYHJQFNRV-UHFFFAOYSA-N tetraethylenepentamine Chemical compound NCCNCCNCCNCCN FAGUFWYHJQFNRV-UHFFFAOYSA-N 0.000 description 1
- WMYJOZQKDZZHAC-UHFFFAOYSA-H trizinc;dioxido-sulfanylidene-sulfido-$l^{5}-phosphane Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S WMYJOZQKDZZHAC-UHFFFAOYSA-H 0.000 description 1
- 229960002703 undecylenic acid Drugs 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
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- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
- LPEBYPDZMWMCLZ-CVBJKYQLSA-L zinc;(z)-octadec-9-enoate Chemical compound [Zn+2].CCCCCCCC\C=C/CCCCCCCC([O-])=O.CCCCCCCC\C=C/CCCCCCCC([O-])=O LPEBYPDZMWMCLZ-CVBJKYQLSA-L 0.000 description 1
- GPYYEEJOMCKTPR-UHFFFAOYSA-L zinc;dodecanoate Chemical compound [Zn+2].CCCCCCCCCCCC([O-])=O.CCCCCCCCCCCC([O-])=O GPYYEEJOMCKTPR-UHFFFAOYSA-L 0.000 description 1
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Classifications
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- C10M105/04—Well-defined hydrocarbons aliphatic
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- C10M129/42—Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having 8 or more carbon atoms polycarboxylic
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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
- C10N2040/34—Lubricating-sealants
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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
- C10N2040/36—Release agents or mold release agents
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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
- C10N2040/38—Conveyors or chain belts
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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
- C10N2040/40—Generators or electric motors in oil or gas winning field
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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
- C10N2040/42—Flashing oils or marking 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
- C10N2040/44—Super vacuum or supercritical use
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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
- C10N2040/50—Medical uses
Definitions
- the present invention relates to a lubricating oil composition, in particular it relates to a lubricating oil composition having excellent frictional characteristics, decreased in changes with time of the frictional characteristics and an excellent oxidation stability, which therefore is useful as a lubricating oil for use in various parts such as an automatic transmission, a continuously variable transmission, a brake of a tractor and a power steering.
- a lubricating oil to be used in parts including a wet clutch or a wet brake of an automatic transmission, a continuously variable transmission and a tractor is required to have such properties that frictional characteristics, oxidation stability, corrosion resistance and rust resistance are good.and transmission torque is large.
- An especially important requirement is that the ratio of coefficient of static friction ( ⁇ 0 ) to coefficient of kinematic friction ( ⁇ 1200 ) as a measure of frictional characteristics is small and further that the change with time of the above ratio is small.
- a lubricating oil having a high coefficient of static friction and good in transmission torque has heretofore been known.
- This lubricating oil has disadvantages in that frictional characteristics are not sufficiently satisfactory and shift shock is undesirably big.
- GB-A-1 199 936 discloses a lubricating oil composition
- a lubricating oil composition comprising a naphthene + paraffin base oil having an aromatic content (C A ) of less than 0,5 % by weight and a kinematic viscosity of 19.24 x 10 -6 m 2 /s (19,24 cSt).
- the composition further comprises sulfur-containing compounds, amine salts of phosphoric acid esters and carboxylic acid esters.
- the exact naphthene content is not specified in this reference.
- FR-A-1 544 802 disclosed a combination of a mineral oil with phosphate additives, the mineral oil having a naphthene content of at least 25 % and a kinematic viscosity at 90°C of from 1,06 x 10 -6 m 2 /s to 2,44 x 10 -6 m 2 /s (1,06 to 2,44 cSt), and the aromatic content of the lubricating oil composition disclosed therein being 9,0 %.
- the object of the present invention is to overcome the above problems and to provide a lubricating oil composition which is decreased in shift shock, is great in transmission torque, and further has a sufficiently high corrosion-preventing ability. and thus is suitable for use in lubrication of an automatic transmission.
- this object can be attained by compounding a specified proportion of a specific friction modifier to a base oil having specified properties.
- the present invention relates to a lubricating oil composition which comprises:
- the base oil component (A) of the lubricating oil composition of the present invention is a mineral oil, preferably a deep dewaxed oil obtained by subjecting a purified oil to deep dewaxing treatment.
- the base oil as the component (A) of the present composition has a naphthene content (% C N ) of at least 30 %, preferably 32 to 70 %, an aromatic content (% C A ) of not more than 2 %, preferably not more than 1 %, and a kinematic viscosity at 100 ° C of from 1,5 x 10 -6 to 30 x 10 -6 m 2 /s ( 1,5 to 30 cSt), preferably 2 x 10 -6 to 20 x 10 -6 m 2 /s (2 to 20 cSt).
- the naphthene content is less than 30 %, frictional characteristics are reduced. If the aromatic content is more than 2 %, oxidation stability is poor and the change with time is undesirably large. Moreover, if the kinematic viscosity at 100° C is less than 1,5 x 10 -6 m 2 /s (1,5 cSt), the evaporation loss is undesirably large while on the other hand if it is more than 30 x 10 -6 m 2 /s (30 cSt), the power loss due to viscosity resistance is undesirably too large.
- the base oil of the component (A) prefferably has such characteristics as required for the usual lubricating oil, for example, (1) proper viscosity characteristics. (2) good stability against oxidation, (3) good detergency and dispersancy, (4) good rust resistance and corrosion resistance and (5) good low temperature fluidity.
- the base oil has a viscosity of at ieast 80, a pour point of not more than -30 ° C, and a total acid value of 0,1 mg KOH/g.
- various mineral oils and synthetic oils can be used as long as they have the above specified properties.
- Representative examples of the mineral oil which can be used as the base oil of the component (A) include a purified oil which is obtained by purifying a distillate oil by the usual method, said distillate oil having been obtained by atmospheric distillation of a paraffin base crude oil or an intermediate base crude oil, or by vacuum distillation of a residual oil resulting from the atmospheric distillation, and a deep dewaxing oil which is obtained by subjecting the above purified oil to deep dewaxing treatment.
- the process for purification of the distillate oil is not critical, and various methods can be employed.
- the distillate oil is purified by applying such treatments as (a) hydrogenation, (b) dewaxing (solvent dewaxing or hydrogenation dewaxing), (c) solvent extraction, (d) alkali distillation or sulfuric acid treatment, and (e) clay filtration, alone or in combination with one another. It is also effective to apply the same treatment repeatedly at multi-stages.
- a mineral oil obtained by deep dewaxing i.e., deep dewaxed oil is particularly preferred as the base oil of the component (A).
- This deep dewaxing is carried out for example by solvent dewaxing under severe conditions, and catalytic hydrogenation dewaxing using a Zeolite catalyst.
- mineral oil As well as the aforementioned mineral oil, usual synthetic oils such as alkylbenzene, polybutene and poly( ⁇ -olefin), a synthetic oil containing saturated hydrocarbons having fused rings and/or non-fused rings-such as 1-(1-decalyl)-1-cyclohexylethane or mixtures thereof can be used as the base oil of the component (A).
- synthetic oils such as alkylbenzene, polybutene and poly( ⁇ -olefin)
- a synthetic oil containing saturated hydrocarbons having fused rings and/or non-fused rings-such as 1-(1-decalyl)-1-cyclohexylethane or mixtures thereof can be used as the base oil of the component (A).
- the friction modifier as the component (B) of the present composition is added to the base oil as the component (A) in a proportion of 0,01 to 5 % by weight, preferably 0,1 to 2 % by weight based on the total weight of the composition. If the proportion of the friction modifier is less than 0,01 % by weight, its addition is not effective. On the other hand, if it is more than 5 % by weight, oxidation stability is undesirably reduced.
- the friction modifier which is used as the component (B) of the present composition, at least one compound selected from the group consisting of phosphoric acid esters, phosphorous acid esters, amine salts of phosphoric acid esters, amine salts of phosphorous acid esters.
- sorbitan fatty acid esters pentaerythritol fatty acid esters, tetraesters being excluded, glycerine fatty acid esters, trimethylolpropane fatty acid esters, triesters being excluded, glycol fatty acid esters, neopentyl glycol fatty acid diesters being excluded, carboxylic acid esters, dicarboxylic acid esters being excluded, metal salts of carboxylic acids, fats and oils. higher alcohols, and sulfur-containing compounds is used. These compounds can be used alone or in combination with one another.
- R 1 and R 2 may be the same or different and are each an alkyl group having 4 to 30 carbon atoms, an aryl group, or an alkyl-substituted aryl group.
- phosphoric acid esters and phosphorous acid esters include butylacid phosphate, 2-ethylhexylacid phosphate, laurylacid phosphate, oleylacid phosphate, stearylacid phosphate, dibutylhydrogen phosphite, dilaurylhydrogen phosphite, dioleylhydrogen phosphite, distearylhydrogen phosphite, and diphenylhydrogen phosphite.
- the amine salts of phosphoric acid esters and phosphorous acid esters include the oleylamine salts, coconut amine salts, beef tallow amine salts of the above phosphoric acid esters and phosphorous acid esters.
- sorbitan fatty acid esters include sorbitan monolaurate, sorbitan monooleate, sorbitan monostearate, sorbitan sesquioleate, sorbitan dioleate and mixtures thereof.
- pentaerythritol fatty acid esters include the monoesters, diesters or triesters of pentaerythritol or dipentaerythritol and fatty acids such as capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, linolic acid and behenic acid, and mixtures thereof.
- glycerine fatty acid esters include oleic monoglyceride, stearic monoglyceride, oleic diglyceride and mixtures thereof.
- trimethylolpropane fatty acid esters include the monoesters or diesters of trimethylpropane and fatty acids such as capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, linolic acid and behenic acid, and mixtures thereof.
- glycol fatty acid esters include the monoesters of propylene glycol, trimethylene glycol, 1,4-butanediol or neopentyl glycol and fatty acids such as capric acid, lauric acid, palmitic acid, myristic acid, stearic acid, oleic acid, linolic acid and behenic acid, and mixtures thereof.
- carboxylic acids aliphatic carboxylic acids, divalent carboxylic acids (dibasic acids) and aromatic carboxylic acids can be used.
- the aliphatic carboxylic acids have 8 to 30 carbon atoms and may be saturated or unsaturated.
- aliphatic carboxylic acids include pelargonic acid, lauric acid, tridecanic acid, myristic acid, palmitic acid, stearic acid, eicosanic acid, behenic acid, triacon-tanoic acid, undecylenic acid, oleic acid, linolic acid, linoleic acid, erucic acid, and oils and fats fatty acids (e.g., coconut oil fatty acid, and palm kernel oil fatty acid).
- divalent carboxylic acid examples include octadecylsuccinic acid, octadecenylsuccinic acid, polybutenesuccinic acid, adipic acid, azelaic acid, sebacic acid and dodecane diacid.
- aromatic carboxylic acids include salicylic acid.
- carboxylic acid amide various compounds can be used.
- carboxylic acids as described above and amine compounds e.g., diethylenetriamine, triethylenetetramine, tetraethylenepentamine, hexaethylenepentamine, heptaethyleneoctamine, tetrapropylenepentamine, hexabutyleneheptamine, and alkanolamines such as monoethanolamine, and diethanolamine
- amine compounds e.g., diethylenetriamine, triethylenetetramine, tetraethylenepentamine, hexaethylenepentamine, heptaethyleneoctamine, tetrapropylenepentamine, hexabutyleneheptamine, and alkanolamines such as monoethanolamine, and diethanolamine
- Carboxylic acid esters include aliphatic carboxylic acid esters.
- the alkyl (e.g., methyl, ethyl, propyl, butyl, octyl, lauryl, and oleyl) esters of aliphatic carboxylic acids are described above are usually used.
- carboxylic acid metal salts zinc laurate, zinc oleate, zinc stearate, zinc salt of coconut fatty acid, aluminum stearate and magnesium salicylate can be used.
- both animal oils and vegetable oils can be used.
- animal oils include lard, beef tallow and fish oil.
- vegetable oils include soy bean oil, rapeseed oil, rice bran oil, palm oil, palm kernel oil and coconut oil.
- octyl alcohol lauryl alcohol, myristyl alcohol, oleyl alcohol and stearyl alcohol can be used.
- sulfur-containing compounds sulfurized oil, the reaction product of phosphorous sulfide and pinene can be used.
- the above compounds can be used as the component (B), friction modifier, of the composition of the present invention.
- phosphoric acid esters, phosphorous acid esters or their amine salts, carboxylic acid amides, glycerine fatty acid esters, sorbitan fatty acid esters, carboxylic acid metal salts and mixtures comprising two or more thereof are preferred.
- composition of the present invention is obtained by adding a friction modifier as the component (B) to a base oil as the component (A). If desired, a viscosity index improver, an antioxidant, a detergent dispersant and so forth can be added to the composition of the present invention.
- the type of the viscosity idex improver is not critical.
- polymethacrylate, polyisobutene, polyalkylstyrene and an ethylene-propylene copolymer can be used.
- polymethacrylate having a molecular weight of not more than 100 000, preferably not more than 50 000, which is excellent in shear stability and is able to prevent changes in viscosity for a long time is particularly suitable.
- the amount of the viscosity indes improver added can be determined appropriately; usually, it is 0,5 to 15 % by weight, preferably 2 to 10 % by weight based on the total weight of the composition.
- antioxidant compounds commonly used, such as phenol-based compounds, amine-based compounds, and zinc dithiophosphate can be used. Representative examples are 2,6-di-tert-butyl-4-methylphenol, 2,6-di-tert-butyl-4-ethylphenol, 4,4'-methylenebis(2,6-di-tert-butylphenol), phenyl- ⁇ -naphthylamine, dialkyldiphenylamine, zinc di-2-ethylhexyldithiophosphate, zinc diamyldithiocarbamate, and pinene pentasulfide.
- the amount of the antioxidant added is 0.01 to 2% by weight, preferably 0.05 to 1% by weight based on the total weigh of the composition.
- the detergent dispersant e.g. an ashless detergent, and a metal detergent can be used.
- a boron-containing ashless detergent can be used.
- alkenylsuccinic acid imide, sulfonates, and phenates are preferred. Examples are polybutenylsuccinic acid imide, calcium sulfonate, barium sulfonate, calcium phenate, barium phenate, and calcium salicylate.
- the amount of the detergent dispersant added is 0.1 to 10% by weight, preferably 0.5 to 5% by weight based on the total weight of the composition.
- a corrosion preventing agent e.g., a rubber swelling agent, and a defoaming agent can be added to the composition of the present invention.
- initial frictional characteristics are good, that is, the ratio of coefficient of static friction to coefficient of kinematic friction is small, and the shock due to speed change is small. Changes with time of the frictional characteristics are small. Furthermore, the lubricating oil composition of the present invention is excellent in oxidation stability and corrosion resistance. Thus the lubricating oil composition of the present invention is suitable for miniaturization of a transmission and so forth.
- the lubricating oil composition of the present invention is quite useful as a lubricating oil for use in an automatic transmission or a continuously variable transmission, or as a lubricating oil for use in parts including a wet clutch or a wet brake of an agricultural tractor.
- lubricating oil composition of the present invention having characteristics as described above is useful as a lubricating oil to be used in a shock absorber, a power steering, an oil suspension and further in various construction machines.
- Base Oils A to E shown below were used as the base oil.
- To 89.3% by weight of each of Base Oils A to E were added 4.0% by weight of polymethyl methacrylate (weight average molecular weight 42,000), 0.5% by weight of 2,6-di-tert-butyl-4-methylphenol, 5.0% by weight of polybutenylsuccinic acid imide, 0.1% by weight of an anti-corrosion agent, 1.0% by weight of a rubber swelling agent and 1% by weight of a defoaming agent to prepare Basic Oils A to E.
- Base Oil A 40% by weight of Base Oil A, 30% by weight of an oil obtained by subjecting a distillate from an intermediate base oil to hydrogenation treatment, and 30% by weight of 1-(1-decalyl)-1-cyclohexylethane.
- the forced degredation was performed at 150°C for 24 hours according to Oxidation Stability Test of Lubricating Oil for Intemal Combustion Engine, JIS K 2514.
- the state of corrosion of a copper plate was measured after 3 hours at 100°C according to JIS K 2513.
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Lubricants (AREA)
Description
Claims (3)
- A lubricating oil composition comprising:(A) a base oil having a naphthene content of at least 30 %, an aromatic content of not more than 2 %, a kinematic viscosity at 100 °C of from 1,5 · 10-6 to 30 · 10-6 m2/s (1,5 to 30 cSt), a viscosity index of at least 80 and a pour point of not more than -30 ° C; and(B) 0.01 to 5 % by weight based on the total weight of the composition of a friction modifier, which is at least one compound selected from the group consisting of phosphoric acid esters, phosphorous acid esters, amine salts of phosphoric acid esters, amine salts of phosphorous acid esters, sorbitan fatty acid esters, pentaerythritol fatty acid esters, tetraesters being excluded, glycerine fatty acid esters, trimethylolpropane fatty acid esters, triesters being excluded, glycol fatty acid esters, neopentyl glycol fatty acid diesters being excluded, carboxylic acids, carboxylic acid amides, carboxylic acid esters, dicarboxylic acid esters being excluded, metal salts of carboxylic acids, fats and oil; higher alcohols and sulfur-containing compounds.
- The composition as claimed in Claim 1 wherein the base oil (A) is a mineral oil.
- The composition as claimed in Claim 2 wherein the mineral oil is a deep dewaxed oil obtained by subjecting a purified oil to deep dewaxing treatment.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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JP62087933A JP2599383B2 (en) | 1987-04-11 | 1987-04-11 | Lubricating oil composition |
JP87933/87 | 1987-04-11 | ||
JP8793387 | 1987-04-11 |
Publications (4)
Publication Number | Publication Date |
---|---|
EP0286996A2 EP0286996A2 (en) | 1988-10-19 |
EP0286996A3 EP0286996A3 (en) | 1989-01-18 |
EP0286996B1 EP0286996B1 (en) | 1992-08-12 |
EP0286996B2 true EP0286996B2 (en) | 1999-12-08 |
Family
ID=13928707
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88105669A Expired - Lifetime EP0286996B2 (en) | 1987-04-11 | 1988-04-09 | Lubricating oil composition |
Country Status (4)
Country | Link |
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EP (1) | EP0286996B2 (en) |
JP (1) | JP2599383B2 (en) |
KR (1) | KR930010575B1 (en) |
DE (1) | DE3873587T3 (en) |
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-
1988
- 1988-04-04 KR KR8803771A patent/KR930010575B1/en not_active IP Right Cessation
- 1988-04-09 EP EP88105669A patent/EP0286996B2/en not_active Expired - Lifetime
- 1988-04-09 DE DE3873587T patent/DE3873587T3/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
KR880012740A (en) | 1988-11-28 |
JPS63254196A (en) | 1988-10-20 |
EP0286996B1 (en) | 1992-08-12 |
EP0286996A3 (en) | 1989-01-18 |
DE3873587T2 (en) | 1993-05-19 |
DE3873587D1 (en) | 1992-09-17 |
JP2599383B2 (en) | 1997-04-09 |
DE3873587T3 (en) | 2000-04-27 |
KR930010575B1 (en) | 1993-10-28 |
EP0286996A2 (en) | 1988-10-19 |
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