CN116406417A - Lubricating oil composition - Google Patents
Lubricating oil composition Download PDFInfo
- Publication number
- CN116406417A CN116406417A CN202180065770.2A CN202180065770A CN116406417A CN 116406417 A CN116406417 A CN 116406417A CN 202180065770 A CN202180065770 A CN 202180065770A CN 116406417 A CN116406417 A CN 116406417A
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- Prior art keywords
- lubricating oil
- mass
- oil composition
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- composition according
- Prior art date
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- 239000010687 lubricating oil Substances 0.000 title claims abstract description 182
- 239000000203 mixture Substances 0.000 title claims abstract description 182
- -1 thiadiazole compound Chemical class 0.000 claims abstract description 48
- 239000002199 base oil Substances 0.000 claims abstract description 20
- 150000001336 alkenes Chemical class 0.000 claims abstract description 15
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims abstract description 15
- 125000000217 alkyl group Chemical group 0.000 claims description 51
- 125000004432 carbon atom Chemical group C* 0.000 claims description 45
- 150000001875 compounds Chemical class 0.000 claims description 43
- 239000003921 oil Substances 0.000 claims description 22
- 125000004434 sulfur atom Chemical group 0.000 claims description 22
- 229910052717 sulfur Inorganic materials 0.000 claims description 18
- 239000002480 mineral oil Substances 0.000 claims description 15
- 229910052698 phosphorus Inorganic materials 0.000 claims description 11
- VLLMWSRANPNYQX-UHFFFAOYSA-N thiadiazole Chemical compound C1=CSN=N1.C1=CSN=N1 VLLMWSRANPNYQX-UHFFFAOYSA-N 0.000 claims description 11
- 239000003638 chemical reducing agent Substances 0.000 claims description 9
- 238000005461 lubrication Methods 0.000 claims description 9
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 9
- 229910019142 PO4 Inorganic materials 0.000 claims description 8
- 239000010452 phosphate Substances 0.000 claims description 8
- 150000003014 phosphoric acid esters Chemical class 0.000 claims description 8
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 5
- 239000011574 phosphorus Substances 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 4
- 125000001183 hydrocarbyl group Chemical group 0.000 claims description 3
- AQSJGOWTSHOLKH-UHFFFAOYSA-N phosphite(3-) Chemical class [O-]P([O-])[O-] AQSJGOWTSHOLKH-UHFFFAOYSA-N 0.000 claims description 2
- 239000008186 active pharmaceutical agent Substances 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 description 18
- 239000002184 metal Substances 0.000 description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 17
- 229910052802 copper Inorganic materials 0.000 description 17
- 239000010949 copper Substances 0.000 description 17
- 238000001816 cooling Methods 0.000 description 16
- 125000003342 alkenyl group Chemical group 0.000 description 15
- 239000000654 additive Substances 0.000 description 13
- 238000009413 insulation Methods 0.000 description 13
- 239000003599 detergent Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 12
- 125000002947 alkylene group Chemical group 0.000 description 10
- 239000003963 antioxidant agent Substances 0.000 description 10
- 235000010446 mineral oil Nutrition 0.000 description 10
- 239000002585 base Substances 0.000 description 9
- 238000005259 measurement Methods 0.000 description 9
- 239000000126 substance Substances 0.000 description 9
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 8
- 239000002253 acid Substances 0.000 description 8
- 230000003078 antioxidant effect Effects 0.000 description 8
- 125000003118 aryl group Chemical group 0.000 description 8
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 8
- 238000010828 elution Methods 0.000 description 7
- 230000007246 mechanism Effects 0.000 description 7
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 6
- 229910052791 calcium Inorganic materials 0.000 description 6
- 239000011575 calcium Substances 0.000 description 6
- 125000004437 phosphorous atom Chemical group 0.000 description 6
- 229920013639 polyalphaolefin Polymers 0.000 description 6
- 241001226615 Asphodelus albus Species 0.000 description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 5
- 150000001412 amines Chemical class 0.000 description 5
- 239000002518 antifoaming agent Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 230000000994 depressogenic effect Effects 0.000 description 5
- 235000014113 dietary fatty acids Nutrition 0.000 description 5
- 239000002270 dispersing agent Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000000194 fatty acid Substances 0.000 description 5
- 229930195729 fatty acid Natural products 0.000 description 5
- 239000006078 metal deactivator Substances 0.000 description 5
- 125000004433 nitrogen atom Chemical group N* 0.000 description 5
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical group [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 4
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 125000000962 organic group Chemical group 0.000 description 4
- 150000008301 phosphite esters Chemical class 0.000 description 4
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 4
- 239000004711 α-olefin Substances 0.000 description 4
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- QCJQWJKKTGJDCM-UHFFFAOYSA-N [P].[S] Chemical class [P].[S] QCJQWJKKTGJDCM-UHFFFAOYSA-N 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 239000003112 inhibitor Substances 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- UFWIBTONFRDIAS-UHFFFAOYSA-N naphthalene-acid Natural products C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
- 239000001993 wax Substances 0.000 description 3
- YJTKZCDBKVTVBY-UHFFFAOYSA-N 1,3-Diphenylbenzene Chemical group C1=CC=CC=C1C1=CC=CC(C=2C=CC=CC=2)=C1 YJTKZCDBKVTVBY-UHFFFAOYSA-N 0.000 description 2
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 2
- 101100208720 Homo sapiens USP5 gene Proteins 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 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 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 102100021017 Ubiquitin carboxyl-terminal hydrolase 5 Human genes 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- 239000013556 antirust agent Substances 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 2
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 2
- 239000012964 benzotriazole Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 235000010290 biphenyl Nutrition 0.000 description 2
- 239000004305 biphenyl Substances 0.000 description 2
- 125000004369 butenyl group Chemical group C(=CCC)* 0.000 description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000004517 catalytic hydrocracking Methods 0.000 description 2
- 125000003493 decenyl group Chemical group [H]C([*])=C([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical class C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 2
- 125000005066 dodecenyl group Chemical group C(=CCCCCCCCCCC)* 0.000 description 2
- 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 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 239000012208 gear oil Substances 0.000 description 2
- 125000003187 heptyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000006038 hexenyl group Chemical group 0.000 description 2
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 150000002430 hydrocarbons Chemical group 0.000 description 2
- 125000002768 hydroxyalkyl group Chemical group 0.000 description 2
- 150000003949 imides Chemical class 0.000 description 2
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 2
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 125000001421 myristyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 125000001624 naphthyl group Chemical group 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 125000005187 nonenyl group Chemical group C(=CCCCCCCC)* 0.000 description 2
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000004365 octenyl group Chemical group C(=CCCCCCC)* 0.000 description 2
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 125000002255 pentenyl group Chemical group C(=CCCC)* 0.000 description 2
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 2
- 239000002530 phenolic antioxidant Substances 0.000 description 2
- 229920000193 polymethacrylate Polymers 0.000 description 2
- 229920005862 polyol Polymers 0.000 description 2
- 125000004368 propenyl group Chemical group C(=CC)* 0.000 description 2
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- 125000005063 tetradecenyl group Chemical group C(=CCCCCCCCCCCCC)* 0.000 description 2
- 150000004867 thiadiazoles Chemical group 0.000 description 2
- 125000005040 tridecenyl group Chemical group C(=CCCCCCCCCCCC)* 0.000 description 2
- 125000002889 tridecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000005065 undecenyl group Chemical group C(=CCCCCCCCCC)* 0.000 description 2
- 125000002948 undecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- RMSGQZDGSZOJMU-UHFFFAOYSA-N 1-butyl-2-phenylbenzene Chemical group CCCCC1=CC=CC=C1C1=CC=CC=C1 RMSGQZDGSZOJMU-UHFFFAOYSA-N 0.000 description 1
- BXRRILFCEKZKPU-UHFFFAOYSA-N 2,5-bis(2-methyloctan-2-yldisulfanyl)-1,3,4-thiadiazole Chemical compound CCCCCCC(C)(C)SSC1=NN=C(SSC(C)(C)CCCCCC)S1 BXRRILFCEKZKPU-UHFFFAOYSA-N 0.000 description 1
- ZFOMEJJNWNWWIB-UHFFFAOYSA-N 2,5-bis(octyldisulfanyl)-1,3,4-thiadiazole Chemical compound CCCCCCCCSSC1=NN=C(SSCCCCCCCC)S1 ZFOMEJJNWNWWIB-UHFFFAOYSA-N 0.000 description 1
- DKCPKDPYUFEZCP-UHFFFAOYSA-N 2,6-di-tert-butylphenol Chemical compound CC(C)(C)C1=CC=CC(C(C)(C)C)=C1O DKCPKDPYUFEZCP-UHFFFAOYSA-N 0.000 description 1
- CMGDVUCDZOBDNL-UHFFFAOYSA-N 4-methyl-2h-benzotriazole Chemical compound CC1=CC=CC2=NNN=C12 CMGDVUCDZOBDNL-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- CZPWVGJYEJSRLH-UHFFFAOYSA-N Pyrimidine Chemical compound C1=CN=CN=C1 CZPWVGJYEJSRLH-UHFFFAOYSA-N 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 125000004450 alkenylene group Chemical group 0.000 description 1
- 125000002877 alkyl aryl group Chemical group 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 229940045714 alkyl sulfonate alkylating agent Drugs 0.000 description 1
- 150000008052 alkyl sulfonates Chemical class 0.000 description 1
- 125000002178 anthracenyl group Chemical group C1(=CC=CC2=CC3=CC=CC=C3C=C12)* 0.000 description 1
- 125000005428 anthryl group Chemical group [H]C1=C([H])C([H])=C2C([H])=C3C(*)=C([H])C([H])=C([H])C3=C([H])C2=C1[H] 0.000 description 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- 125000000732 arylene group Chemical group 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
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 150000001639 boron compounds Chemical class 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
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 150000005676 cyclic carbonates Chemical class 0.000 description 1
- 125000005724 cycloalkenylene group Chemical group 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- 125000002993 cycloalkylene group Chemical group 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 125000005982 diphenylmethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])(*)C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 238000007922 dissolution test Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000003480 eluent Substances 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005227 gel permeation chromatography Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 125000002960 margaryl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 125000006178 methyl benzyl group Chemical group 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 125000005064 octadecenyl group Chemical group C(=CCCCCCCCCCCCCCCCC)* 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 125000002958 pentadecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 125000005561 phenanthryl group Chemical group 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 125000000286 phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])([H])* 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 229920000056 polyoxyethylene ether Polymers 0.000 description 1
- 229920001955 polyphenylene ether Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 150000003873 salicylate salts Chemical class 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 239000010913 used oil Substances 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
- C10M135/32—Heterocyclic sulfur, selenium or tellurium compounds
- C10M135/36—Heterocyclic sulfur, selenium or tellurium compounds the ring containing sulfur and carbon with nitrogen or oxygen
-
- 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
- C10M101/00—Lubricating compositions characterised by the base-material being a mineral or fatty oil
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/02—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
-
- 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
- C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
- C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
- C10M137/04—Phosphate esters
- C10M137/10—Thio derivatives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- 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
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- 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
- C10M2203/102—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
- C10M2205/003—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation 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
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
- C10M2205/0285—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms used as base material
-
- 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
- C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
- C10M2219/104—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon with nitrogen or oxygen in the ring
- C10M2219/106—Thiadiazoles
-
- 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
- C10M2223/047—Thioderivatives not containing metallic elements
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/02—Viscosity; Viscosity index
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/02—Pour-point; Viscosity index
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
-
- 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
- C10N2040/14—Electric or magnetic purposes
- C10N2040/16—Dielectric; Insulating oil or insulators
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Abstract
Disclosed is a lubricating oil composition containing a base oil (A) and a thiadiazole compound (B), wherein the content of a sulfurized olefin is less than 0.20 mass% based on the total amount of the lubricating oil composition, and the kinematic viscosity of the lubricating oil composition at 100 ℃ is 2.1 or more and less than 5.0mm 2 /s。
Description
Technical Field
The present invention relates to a lubricating oil composition, use of the lubricating oil composition, and a method for producing the lubricating oil composition.
Background
Various devices such as an engine, a transmission, a speed reducer, a compressor, and a hydraulic device include a torque converter, a wet clutch, a gear bearing mechanism, an oil pump, a hydraulic control mechanism, and the like. Among these mechanisms, lubricating oil compositions are used, and lubricating oil compositions capable of coping with various demands have been developed.
For example, patent document 1 discloses a gear oil composition in which a low-viscosity mineral oil-based lubricating base oil and a high-viscosity solvent-refined mineral oil-based lubricating oil are blended in a predetermined ratio to provide a gear oil composition having both fuel saving performance and sufficient durability for gears, bearings, etc., and zinc dialkyldithiophosphate and an alkaline earth metal-based detergent are blended in a predetermined blending amount.
Prior art literature
Patent literature
Patent document 1: japanese patent application laid-open No. 2012-193255
Disclosure of Invention
Problems to be solved by the invention
However, for example, lubricating oil compositions used in various devices such as electric motors are required to have insulation properties, and properties such as cooling properties and adhesion resistance are sometimes required depending on the mode of the device. That is, a novel lubricating oil composition having characteristics (such as cooling property, adhesion resistance, insulation property, etc.) suitable for lubrication corresponding to various mechanisms installed in the device is demanded.
Means for solving the problems
The present invention provides a lubricating oil composition comprising a base oil and a thiadiazole compound, wherein the content of a sulfurized olefin is made smaller than a predetermined value, and the kinematic viscosity at 100 ℃ is made to be within a specific range. Specifically, there are provided a lubricating oil composition according to the following modes [1] to [12], a use of a lubricating oil composition according to the following mode [13], and a method for producing a lubricating oil composition according to the following mode [14 ].
[1] A lubricating oil composition comprising a base oil (A) and a thiadiazole compound (B),
the content of the sulfurized olefin is less than 0.20% by mass based on the total amount of the lubricating oil composition,
The kinematic viscosity of the lubricating oil composition at 100 ℃ is 2.1mm 2 Above/s and less than 5.0mm 2 /s。
[2] The lubricating oil composition according to the above [1], wherein the component (B) comprises a thiadiazole-based compound (B1) having a branched alkyl group.
[3] The lubricating oil composition according to the above [2], wherein the branched alkyl group of the component (B1) has 5 or more carbon atoms.
[4] The lubricating oil composition according to any one of the above [1] to [3], wherein the component (B) comprises a compound represented by any one of the following general formulae (B-1) to (B-4).
[ chemical formula 1]
[ in the above formula, R 1 And R is 2 Each independently is a hydrocarbyl group. m and n are each independently integers of 1 to 10. A kind of electronic device
[5]According to [4] above]The lubricating oil composition, wherein R 1 And R is 2 Each independently represents a branched alkyl group having 5 or more carbon atoms.
[6] The lubricating oil composition according to any one of the above [1] to [5], wherein the content of the compound represented by the following general formula (B-x) is less than 10% by mass based on the total amount of the component (B) contained in the lubricating oil composition.
[ chemical formula 2]
[ in the above formula, R a Is a hydrogen atom or methyl group, R b Is an alkyl group having 1 to 4 carbon atoms. p is 0 or 1. A kind of electronic device
[7] The lubricating oil composition according to any one of the above [1] to [6], wherein the content of the component (B) is 0.01 to 3.0% by mass based on the total amount of the lubricating oil composition.
[8] The lubricating oil composition according to any one of the above [1] to [6], wherein the content of the component (B) is 0.10 to 1.0% by mass based on the total amount of the lubricating oil composition.
[9] The lubricating oil composition according to any one of the above [1] to [8], wherein the component (A) is 1 or more kinds selected from mineral oils and synthetic oils classified into group 2 and group 3 in API base oil categories.
[10] The lubricating oil composition according to any one of the above [1] to [9], further comprising 1 or more phosphorus-based compounds (C) selected from the group consisting of phosphoric acid esters and phosphorous acid esters.
[11] The lubricating oil composition according to the above [10], wherein the component (C) contains 1 or more sulfur-phosphorus compound (C1) selected from the group consisting of a sulfur atom-containing phosphate and a sulfur atom-containing phosphite.
[12] The lubricating oil composition according to any one of the above [1] to [11], which is used for lubrication of a speed reducer.
[13] The use of the lubricating oil composition according to any one of the above [1] to [12] for lubrication of a speed reducer.
[14] A method for producing the lubricating oil composition according to any one of the above [1] to [12], wherein,
the thiadiazole compound (B) is blended into the base oil (A) in such a manner that the content of the sulfurized olefin is less than 0.20% by mass based on the total amount of the lubricating oil composition and the kinematic viscosity of the lubricating oil composition at 100 ℃ is 2.1mm 2 Above/s and less than 5.Omm 2 Preparation is carried out in the manner of/s.
Effects of the invention
The lubricating oil composition according to a preferred embodiment of the present invention is a lubricating oil composition having characteristics suitable for various mechanisms to be mounted in a device, and the lubricating oil composition according to a more preferred embodiment can improve cooling property, adhesion resistance and insulation property in a well-balanced manner. Therefore, these lubricating oil compositions can be suitably used for lubrication of a speed reducer or the like.
Detailed Description
The numerical ranges described in the present specification may be arbitrarily combined with the upper limit value and the lower limit value. For example, when the numerical range is described as "preferably 30 to 100, more preferably 40 to 80", the numerical range of "30 to 80" and the numerical range of "40 to 100" are also included in the numerical range described in the present specification. For example, when the numerical range is "preferably 30 or more, more preferably 40 or more, and still more preferably 100 or less, more preferably 80 or less", the numerical range of "30 to 80" and the numerical range of "40 to 100" are included in the numerical range described in the present specification.
The numerical ranges described in the present specification are, for example, ranges of "60 to 100" and "60 or more and 100 or less".
In addition, in the present specification, the kinematic viscosity and viscosity index refer to those according to JISK2283:2000 measured or calculated values.
[ constitution of lubricating oil composition ]
The lubricating oil composition according to one embodiment of the present invention contains a base oil (a) (hereinafter, also referred to as "component (a)") and a thiadiazole-based compound (hereinafter, also referred to as "component (B)") and satisfies the following conditions (I) and (II).
Condition (I): the content of the sulfurized olefin is less than 0.20% by mass based on the total amount (100% by mass) of the lubricating oil composition.
Condition (II): the kinematic viscosity of the lubricating oil composition at 100 ℃ is 2.1mm 2 Above/s and less than 5.0mm 2 /s。
As a result of studies by the present inventors, it has been found that the lower the kinematic viscosity of a lubricating oil composition is, the more the cooling performance is improved. The lubricating oil composition having excellent cooling properties can be suitably used for cooling devices accompanied by heat generation such as electric motors and generators.
However, a lubricating oil composition having a low kinematic viscosity is likely to cause local surface damage due to solid phase coagulation occurring at sliding contact surfaces such as tooth surfaces, which is called cementing, and also a decrease in volume resistivity and a problem in insulation properties are observed.
Therefore, in the present invention, the kinematic viscosity of the lubricating oil composition is prepared in a range satisfying the condition (II) to thereby improve the cooling property and the insulation property, and the thiadiazole-based compound as the component (B) is contained to thereby further adjust the content of the vulcanized olefin in a range satisfying the condition (I) to thereby maintain the cooling property and the insulation property well and to improve the adhesion resistance.
As a result, the lubricating oil composition according to one embodiment of the present invention can be produced as a lubricating oil composition having improved cooling performance, adhesion resistance and insulation properties in a well-balanced manner.
Examples of the vulcanized olefin defined by the condition (I) include compounds represented by the following general formula (I).
R-(S) q -R’ (i)
In the above formula (i), R is an alkenyl group having 2 to 20 carbon atoms, R' is an alkenyl group having 2 to 20 carbon atoms or an alkyl group having 2 to 20 carbon atoms, and q is an integer of 1 to 10.
As defined in the condition (I), the content of the sulfurized olefin is less than 0.20% by mass based on the total amount (100% by mass) of the lubricating oil composition, and from the viewpoint of producing a lubricating oil composition which is further improved in the seizure resistance and is also excellent in the copper corrosion resistance, it is preferably less than 0.18% by mass, more preferably less than 0.15% by mass, still more preferably less than 0.12% by mass, still more preferably less than 0.10% by mass, particularly preferably less than 0.07% by mass, and furthermore, may be less than 0.05% by mass, less than 0.04% by mass, less than 0.03% by mass, less than 0.02% by mass, less than 0.01% by mass, or less than 0.001% by mass.
As specified in the condition (II), the kinematic viscosity of the lubricating oil composition at 100℃was 2.1mm 2 From the viewpoint of further improving the insulation properties and reducing the flash point, and having excellent handleability, it is preferably 2.2mm or more 2 At least/s, more preferably 2.4mm 2 At least/s, more preferably 2.5mm 2 Higher than/s, more preferably 2.7mm 2 At least/s, particularly preferably 2.8mm 2 Above/s, and may be 3.0mm 2 Above/s, 3.2mm 2 Above/s, 3.4mm 2 Above/s, or 3.6mm 2 And/s.
In addition, in the case of the optical fiber,the lubricating oil composition has a kinematic viscosity at 100 ℃ of less than 5.0mm 2 From the viewpoint of preparing a lubricating oil composition with further improved cooling properties, s is preferably 4.8mm 2 Preferably less than/s, more preferably 4.5mm 2 Preferably less than/s, more preferably 4.2mm 2 And/s is less than or equal to, more preferably 4.1mm 2 And/s is less than or equal to 3.9mm, more preferably 2 And/s or less, more preferably 3.7mm 2 And/s or less, more preferably 3.5mm 2 Preferably less than/s, particularly preferably 3.2mm 2 In addition, the diameter of the particles is 3.0mm or less 2 Less than/s, 2.8mm 2 Less than/s, or 2.6mm 2 And/s or less.
From the viewpoint of producing a lubricating oil composition having further improved wear resistance, the lubricating oil composition according to one embodiment of the present invention preferably further contains 1 or more phosphorus-based compounds (C) (hereinafter, also referred to as "component (C)") selected from the group consisting of phosphate esters and phosphite esters.
The lubricating oil composition according to one embodiment of the present invention may further contain various additives other than the components (B) to (C) as necessary within a range that does not impair the effects of the present invention.
In the lubricating oil composition according to one embodiment of the present invention, the total content of the components (a) and (B) is preferably 50 mass% or more, more preferably 60 mass% or more, still more preferably 70 mass% or more, still more preferably 75 mass% or more, particularly preferably 80 mass% or more, and further may be 85 mass% or more, 90 mass% or more, or 92 mass% or more, and further may be 100 mass% or less, 99.5 mass% or less, 99.0 mass% or less, 98.5 mass% or less, 98.0 mass% or less, 97.5 mass% or less, 97.0 mass% or less, 96.5 mass% or less, or 96.0 mass% or less, based on the total amount (100 mass%) of the lubricating oil composition.
In the lubricating oil composition according to one embodiment of the present invention, the total content of the components (a), (B), and (C) is preferably 52 mass% or more, more preferably 62 mass% or more, still more preferably 72 mass% or more, still more preferably 77 mass% or more, particularly preferably 82 mass% or more, and may be 87 mass% or more, 90 mass% or more, 92 mass% or more, or 94 mass% or more, or may be 100 mass% or less, 99.5 mass% or less, 99.0 mass% or less, 98.5 mass% or less, 98.0 mass% or less, 97.5 mass% or less, 97.0 mass% or less, 96.5 mass% or less, or 96.0 mass% or less, based on the total amount (100 mass%) of the lubricating oil composition.
Hereinafter, details of each component contained in the lubricating oil composition according to one embodiment of the present invention will be described.
< component (a): base oil ]
The base oil as the component (a) used in one embodiment of the present invention includes 1 or more selected from mineral oils and synthetic oils.
Examples of the mineral oil include atmospheric residues obtained by atmospheric distillation of crude oils such as paraffinic crude oils, intermediate base crude oils and naphthenic crude oils; distillate oil obtained by vacuum distillation of these atmospheric residues; refined oil obtained by subjecting the distillate oil to 1 or more refining treatments such as solvent deasphalting, solvent extraction, hydrocracking, solvent dewaxing, catalytic dewaxing, and hydrofining (hydrocracking); etc.
Examples of the synthetic oil include polyalphaolefins such as alpha-olefin homopolymers and alpha-olefin copolymers (for example, alpha-olefin copolymers having 8 to 14 carbon atoms such as ethylene-alpha-olefin copolymers); isoparaffins; polyalkylene glycols; ester-based oils such as polyol esters, dibasic acid esters, and phosphoric acid esters; ether-based oils such as polyphenylene ether; an alkylbenzene; alkyl naphthalene; synthetic oils (GTLs) obtained by isomerizing waxes produced from natural gas by the fischer-tropsch process or the like (GTL waxes (Gas To Liquids WAX)).
The component (a) used in one embodiment of the present invention preferably contains 1 or more kinds selected from mineral oils classified into group II and group III and synthetic oils in API (american petroleum institute) base oil categories, and more preferably contains 1 or more kinds selected from mineral oils and synthetic oils classified into group III.
From the viewpoint of preparing a lubricating oil composition satisfying the above condition (II)Starting from this, the kinematic viscosity of the component (A) used in one embodiment of the invention at 100℃is preferably 1.9mm 2 At least/s, more preferably 2.0mm 2 At least/s, more preferably 2.1mm 2 At least/s, more preferably 2.3mm 2 Higher than/s, more preferably 2.5mm 2 At least/s, particularly preferably 2.7mm 2 Above/s, and may be 2.9mm 2 Above/s, 3.0mm 2 Above/s, 3.2mm 2 Above/s, 3.4mm 2 Above/s, or 3.6mm 2 And/s.
In addition, the kinematic viscosity of component (A) at 100℃is preferably 5.0mm 2 Preferably less than/s, more preferably 4.8mm 2 Preferably less than/s, more preferably 4.6mm 2 And/s is less than or equal to, more preferably 4.5mm 2 And/s is less than or equal to, more preferably 4.3mm 2 And/s or less, more preferably 4.2mm 2 And/s or less, more preferably 4.0mm 2 Preferably less than/s, particularly preferably 3.8mm 2 In addition, the diameter of the particles is 3.7mm or less 2 Less than/s, 3.6mm 2 Less than/s, 3.5mm 2 Less than/s, 3.4mm 2 Less than/s, 3.3mm 2 Less than/s, 3.2mm 2 Less than/s, 3.0mm 2 Less than/s, 2.8mm 2 Less than/s, or 2.6mm 2 And/s or less.
The viscosity index of the component (a) used in one embodiment of the present invention is preferably 70 or more, more preferably 80 or more, still more preferably 90 or more, and still more preferably 100 or more.
In one embodiment of the present invention, when a mixed oil obtained by combining 2 or more types of base oils is used as the component (a), the kinematic viscosity and viscosity index of the mixed oil are preferably in the above-described ranges. Thus, the preparation can be performed using a low viscosity base oil in combination with a high viscosity base oil to achieve the above ranges of kinematic viscosity and viscosity index.
In the lubricating oil composition according to one embodiment of the present invention, the content of the component (a) is preferably 45% by mass or more, more preferably 50% by mass or more, still more preferably 55% by mass or more, still more preferably 60% by mass or more, particularly preferably 65% by mass or more, further, it may be 70% by mass or more, 75% by mass or more, 80% by mass or more, 85% by mass or more, 90% by mass or more, or 92% by mass or more, further, it is preferably 99.99% by mass or less, more preferably 99.90% by mass or less, still more preferably 99.50% by mass or less, still more preferably 99.00% by mass or less, particularly preferably 98.50% by mass or less, and further, it may be 98.00% by mass or less, 97.50% by mass or less, 97.00% by mass or less, 96.50% by mass or less, or 96.00% by mass or less, based on the total amount (100% by mass) of the lubricating oil composition.
< component (B): thiadiazole-based Compound
The thiadiazole-based compound as the component (B) used in one embodiment of the present invention may be a compound having a thiadiazole ring, and preferably contains a compound represented by any one of the following formulas (B-1) to (B-4), more preferably at least a compound represented by the following formula (B-1), from the viewpoint of producing a lubricating oil composition having further improved adhesion resistance.
The component (B) may be used alone or in combination of 2 or more.
[ chemical formula 3]
In the above formula, R 1 And R is 2 Each independently is a hydrocarbyl group.
m and n are each independently an integer of 1 to 10, and are preferably an integer of 1 to 6, more preferably an integer of 1 to 4, still more preferably an integer of 2 to 3, and still more preferably 2, from the viewpoint of producing a lubricating oil composition having further improved adhesion resistance.
As can be selected as R 1 And R is 2 Examples of the hydrocarbon group include methyl, ethyl, propyl (n-propyl, isopropyl), butyl (n-butyl, sec-butyl, tert-butyl, isobutyl), pentyl, hexyl, heptyl, octyl, 2-ethylhexyl, nonyl, 1-dimethylheptyl,straight or branched alkyl groups such as decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, and octadecyl; straight-chain or branched alkenyl groups such as ethenyl, propenyl, butenyl, pentenyl, hexenyl, heptenyl, octenyl, nonenyl, decenyl, undecenyl, dodecenyl, tridecenyl, tetradecenyl, pentadecenyl and the like; cycloalkyl groups which may have an alkyl group, such as cyclohexyl, dimethylcyclohexyl, ethylcyclohexyl, propylcyclohexyl, butylcyclohexyl, and heptylcyclohexyl; aryl groups such as phenyl, naphthyl, anthracenyl, biphenyl, and terphenyl; alkylaryl groups such as tolyl, dimethylphenyl, butylphenyl, nonylphenyl, methylbenzyl, and dimethylnaphthyl; arylalkyl groups such as phenylmethyl, phenylethyl, and diphenylmethyl.
From the viewpoint of preparing a lubricating oil composition having further improved resistance to tackiness, R can be selected as 1 And R is 2 The number of carbon atoms of the hydrocarbon group is preferably 1 or more, more preferably 2 or more, still more preferably 3 or more, still more preferably 5 or more, and may be 7 or more, 8 or more, or 9 or more, and is preferably 30 or less, more preferably 24 or less, more preferably 20 or less, more preferably 18 or less, still more preferably 16 or less, still more preferably 14 or less, still more preferably 12 or less, and may be 11 or less, or 10 or less.
Wherein R is from the viewpoint of preparing a lubricating oil composition having further improved resistance to tackiness 1 And R is 2 The alkyl groups are each independently preferable, and from the viewpoint of producing a lubricating oil composition capable of effectively suppressing copper elution by improving the copper corrosion resistance together with the adhesion resistance, the branched alkyl groups are more preferable, and the branched alkyl groups having 5 or more carbon atoms are further preferable.
From the above viewpoints, the number of carbon atoms of the branched alkyl group is preferably 5 or more, more preferably 7 or more, still more preferably 8 or more, still more preferably 9 or more, and further preferably 30 or less, more preferably 24 or less, more preferably 20 or less, more preferably 18 or less, still more preferably 16 or less, still more preferably 14 or less, still more preferably 12 or less, and further, may be 11 or less, or 10 or less.
In the lubricating oil composition according to one embodiment of the present invention, the total content of the compounds represented by any one of the general formulae (B-1) to (B-4) is preferably 60 to 100% by mass, more preferably 70 to 100% by mass, even more preferably 80 to 100% by mass, even more preferably 90 to 100% by mass, and particularly preferably 95 to 100% by mass, based on the total amount (100% by mass) of the component (B) contained in the lubricating oil composition, from the viewpoint of producing a lubricating oil composition having further improved adhesion resistance.
In the lubricating oil composition according to one embodiment of the present invention, the content of the compound represented by the general formula (B-1) is preferably 50 to 100% by mass, more preferably 60 to 100% by mass, still more preferably 70 to 100% by mass, still more preferably 80 to 100% by mass, and particularly preferably 90 to 100% by mass, based on the total amount (100% by mass) of the component (B) contained in the lubricating oil composition, from the above point of view.
In the lubricating oil composition according to one embodiment of the present invention, the content of the compound represented by the following general formula (B-x) is preferably less than 10% by mass, more preferably less than 8% by mass, still more preferably less than 5% by mass, still more preferably less than 3% by mass, and particularly preferably less than 1% by mass, based on the total amount (100% by mass) of the component (B) contained in the lubricating oil composition.
[ chemical formula 41
[ in the above formula, R a Is a hydrogen atom or methyl group, R b Is an alkyl group having 1 to 4 carbon atoms. p is 0 or 1. A kind of electronic device
In the lubricating oil composition according to one embodiment of the present invention, the component (B) preferably contains a thiadiazole-based compound (B1) having a branched alkyl group (hereinafter, also referred to as "component (B1)") from the viewpoint of producing a lubricating oil composition capable of effectively suppressing elution of copper by improving the adhesion resistance and copper corrosion resistance.
From the above viewpoints, the content of the component (B1) is preferably 50 to 100 mass%, more preferably 60 to 100 mass%, still more preferably 70 to 100 mass%, still more preferably 80 to 100 mass%, still more preferably 90 to 100 mass%, and particularly preferably 95 to 100 mass%, based on the total amount (100 mass%) of the component (B) contained in the lubricating oil composition.
From the viewpoint of producing a lubricating oil composition capable of effectively suppressing copper elution by improving the adhesion resistance and also improving the copper corrosion resistance, the number of carbon atoms of the branched alkyl group of component (B1) is preferably 5 or more, more preferably 7 or more, still more preferably 8 or more, still more preferably 9 or more, still more preferably 30 or less, more preferably 24 or less, more preferably 20 or less, still more preferably 18 or less, still more preferably 16 or less, still more preferably 14 or less, still more preferably 12 or less, and further, may be 11 or 10 or less.
From the viewpoint of producing a lubricating oil composition capable of effectively inhibiting copper elution by improving the adhesion resistance and copper corrosion resistance, the component (B1) is preferably represented by any one of the above general formulae (B-1) to (B-4) and R in the formulae 1 And R is 2 Compounds each independently being a branched alkyl group, more preferably R in the formula represented by the above general formula (b-1) 1 And R is 2 A compound each independently being a branched alkyl group. The preferred ranges for the number of carbon atoms in the branched alkyl group are as described above.
In the lubricating oil composition according to one embodiment of the present invention, the content of the component (B) is preferably 0.01 mass% or more, more preferably 0.05 mass% or more, still more preferably 0.07 mass% or more, still more preferably 0.10 mass% or more, particularly preferably 0.15 mass% or more, and may be 0.17 mass% or more, 0.20 mass% or more, 0.23 mass% or more, 0.25 mass% or more, 0.27 mass% or more, 0.30 mass% or more, 0.32 mass% or more, 0.35 mass% or more, or 0.37 mass% or more, based on the total amount (100 mass%) of the lubricating oil composition, from the viewpoint of further improving the anti-tackiness property, the content is preferably 3.0 mass% or less, more preferably 2.5 mass% or less, still more preferably 2.0 mass% or less, still more preferably 1.5 mass% or less, particularly preferably 1.2 mass% or less, and may be 1.0 mass% or less, 0.95 mass% or less, 0.90 mass% or less, 0.85 mass% or less, 0.80 mass% or less, 0.75 mass% or less, 0.70 mass% or less, 0.65 mass% or less, 0.60 mass% or less, 0.55 mass% or 0.50 mass% or less.
For example, the content of the component (B) is 0.01 to 3.0 mass%, 0.05 to 2.5 mass%, 0.07 to 2.0 mass%, 0.10 to 1.5 mass%, 0.10 to 1.2 mass%, 0.10 to 1.0 mass%, or 0.15 to 1.0 mass% based on the total amount (100 mass%) of the lubricating oil composition.
In the lubricating oil composition according to one embodiment of the present invention, the content of the component (B) in terms of the sulfur atom conversion is preferably 30 mass ppm or more, more preferably 50 mass ppm or more, still more preferably 100 mass ppm or more, still more preferably 200 mass ppm or more, particularly preferably 300 mass ppm or more, further preferably 400 mass ppm or more, 500 mass ppm or more, 600 mass ppm or more, 700 mass ppm or more, 800 mass ppm or more, 900 mass ppm or more, 1000 mass ppm or more, 1050 mass ppm or more, or 1100 mass ppm or more, further preferably 10000 mass ppm or less, still more preferably 8000 mass ppm or less, still more preferably 7000 mass ppm or less, still more preferably 6000 mass ppm or less, particularly preferably 5000 mass ppm or less, and furthermore 4500 mass ppm or less, 4000 mass ppm or less, 3500 mass ppm or less, 3000 mass ppm or less, 900 mass ppm or more, 1000 mass ppm or less, 1700 mass ppm or 400 mass ppm or less, 1500 mass ppm or less, 400 mass ppm or less, or 400 mass ppm or less.
In the present specification, the content of sulfur atoms means that according to JIS K2541-6: 2013.
In the lubricating oil composition according to one embodiment of the present invention, the content of the component (B) in terms of the nitrogen atom conversion is preferably 10 mass ppm or more, more preferably 30 mass ppm or more, still more preferably 50 mass ppm or more, still more preferably 70 mass ppm or more, particularly preferably 100 mass ppm or more, further preferably 120 mass ppm or more, 130 mass ppm or more, 140 mass ppm or more, 150 mass ppm or more, 160 mass ppm or more, 170 mass ppm or more, 180 mass ppm or more, 190 mass ppm or more, or 200 mass ppm or more, further preferably 2000 mass ppm or less, still more preferably 1800 mass ppm or less, still more preferably 1500 mass ppm or less, still more preferably 1200 mass ppm or less, particularly preferably 1000 mass ppm or less, and further preferably 900 mass ppm or less, further preferably 800 mass ppm or less, 700 mass ppm or less, 600 mass ppm or less, 550 mass ppm or less, 400 mass ppm or less, or 500 mass ppm or less, or 400 mass ppm or less, from the viewpoint of further improving the adhesion resistance.
In the present specification, the content of nitrogen atom means a value measured in accordance with JISK 2609.
< component (C): phosphorus compound (C) >
From the viewpoint of producing a lubricating oil composition with further improved wear resistance, the lubricating oil composition according to one embodiment of the present invention preferably further contains 1 or more phosphorus-based compounds (C) selected from the group consisting of phosphate esters and phosphite esters.
Examples of the phosphate ester contained as the component (C) in one embodiment of the present invention include neutral phosphate esters represented by the following general formula (C-1) and acidic phosphate esters represented by the following general formula (C-2) or (C-3).
In addition, in one embodiment of the present invention, as component (C) contained phosphite ester, for example, can be cited below the following general formula (C-4) or (C-5) acid phosphite ester.
[ chemical formula 5]
In the above formula, R A Examples of the group include an alkyl group having 1 to 30 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, an aryl group having 6 to 18 carbon atoms which may be substituted with an alkyl group having 1 to 6 carbon atoms, and a group having a thioether bond. The plural R's are A May be the same or different from each other.
As can be selected as R A Examples of the alkyl group include methyl, ethyl, propyl (n-propyl, isopropyl), butyl (n-butyl, sec-butyl, tert-butyl, isobutyl), pentyl, hexyl, 2-ethylhexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, hexadecyl, octadecyl and the like.
These alkyl groups may be straight-chain alkyl groups or branched-chain alkyl groups.
The number of carbon atoms of the alkyl group is 1 to 30, preferably 3 to 20, more preferably 5 to 16, still more preferably 6 to 14, and still more preferably 8 to 12.
As can be selected as R A Examples of the alkenyl group include vinyl, propenyl, butenyl, pentenyl, hexenyl, heptenyl, octenyl, nonenyl, decenyl, undecenyl, dodecenyl, tridecenyl, tetradecenyl, pentadecenyl, hexadecenyl, and octadecenyl groups.
These alkenyl groups may be straight-chain alkenyl groups or branched alkenyl groups.
The alkenyl group has 2 to 20 carbon atoms, preferably 3 to 16 carbon atoms, and more preferably 6 to 12 carbon atoms.
As can be selected as R A Examples of the aryl group include phenyl, naphthyl, anthryl, phenanthryl, biphenyl, terphenyl, and phenylnaphthyl, and phenyl is preferred.
The "alkyl group having 1 to 6 carbon atoms" which may be substituted on the aryl group may be an alkyl group having 1 to 6 carbon atoms in the above alkyl group.
As can be selected as R A The group having a thioether bond is preferably a group represented by the following general formula (ii).
[ chemical formula 6]
*-R A02 -S x -R A01 (ii)
In the above formula (ii), R A01 Is a hydrogen atom or a 1-valent organic group having 1 to 20 carbon atoms. R is R A02 Is a 2-valent organic group. x is an integer of 1 or more, preferably an integer of 1 to 10, more preferably an integer of 1 to 5, still more preferably an integer of 1 to 3, still more preferably 1 or 2, and particularly preferably 1.* Indicating the bonding location.
As can be selected as R A01 Examples of the 1-valent organic group of (1) include an alkyl group, an alkenyl group, an aryl group, etc., preferably at least 1-CH of an alkyl group having 1 to 20 carbon atoms or an alkyl group having 1 to 20 carbon atoms (preferably 2 to 18, more preferably 4 to 16, still more preferably 6 to 12, still more preferably 8 to 10) 2 -groups with structure substituted by-O-, -S-, -COO-, -OCO-, -CSO-, -OCS-, -ch=ch-, or-c≡c-, more preferably alkyl.
Can be selected as R A01 The alkyl group of (2) may be a linear alkyl group or a branched alkyl group, and is preferably a linear alkyl group.
The number of carbon atoms of the alkyl group is preferably from 1 to 20, more preferably from 2 to 18, still more preferably from 4 to 16, still more preferably from 6 to 12, still more preferably from 8 to 10.
As can be selected as R A02 Examples of the 2-valent organic group of (a) include an alkylene group having 1 to 20 carbon atoms, a cycloalkylene group, an alkenylene group having 1 to 20 carbon atoms, a cycloalkenylene group, and an arylene group, and is preferably an alkylene group having 1 to 20 carbon atoms or at least 1-CH of an alkylene group having 1 to 20 carbon atoms (preferably 2 to 12, more preferably 2 to 8, and still more preferably 2 to 4) 2 -groups whose structure is substituted by-O-, -S-, -COO-, -OCO-, -CSO-, -OCS-, -ch=ch-, or-c≡c-, more preferably alkylene groups having 2 to 20 carbon atoms.
Can be selected as R A02 The alkylene group of (a) may be a linear alkylene group or a branched alkylene group, and is preferably a linear alkylene group.
The number of carbon atoms of the alkylene group is 1 to 20, preferably 1 to 12, more preferably 1 to 8, still more preferably 1 to 4, still more preferably 1, 2 or 4, and particularly preferably 2.
In the lubricating oil composition according to one embodiment of the present invention, the component (C) preferably contains 1 or more sulfur-phosphorus compounds (C1) selected from the group consisting of phosphoric acid esters containing sulfur atoms and phosphites containing sulfur atoms, from the viewpoint of producing a lubricating oil composition having further improved wear resistance.
In the lubricating oil composition according to one embodiment of the present invention, the content of the component (C1) is preferably 60 to 100% by mass, more preferably 70 to 100% by mass, still more preferably 80 to 100% by mass, still more preferably 90 to 100% by mass, still more preferably 95 to 100% by mass, and particularly preferably 98 to 100% by mass, based on the total amount (100% by mass) of the component (C) contained in the lubricating oil composition, from the viewpoint of producing a lubricating oil composition with further improved wear resistance.
Examples of the sulfur atom-containing phosphate and the sulfur atom-containing phosphite include a sulfur atom-containing phosphate and a sulfur atom-containing phosphite each having a group represented by the above formula (ii).
From the viewpoint of producing a lubricating oil composition having further improved wear resistance, the component (C1) used in one embodiment of the present invention is preferably a phosphite having a sulfur atom and having a group represented by the above formula (ii), and more preferably 1 or more selected from the group consisting of the compound (C11) represented by the following general formula (C-11) and the compound (C12) represented by the following general formula (C-12).
[ chemical formula 7]
In the above formulae (c-11), (c-12), R A11 、R A21 And R is A22 Each independently is a hydrogen atom or a carbon number1 to 20 alkyl groups.
The alkyl group may be a linear alkyl group, or may be a branched alkyl group, and is preferably a linear alkyl group.
The number of carbon atoms of the alkyl group is preferably from 1 to 20, more preferably from 2 to 18, still more preferably from 4 to 16, still more preferably from 6 to 12, still more preferably from 8 to 10.
Further, a1, a2 and a3 are each independently an integer of 1 to 20, preferably an integer of 1 to 12, more preferably an integer of 1 to 8, further preferably an integer of 1 to 4, further preferably 1, 2 or 4, and particularly preferably 2.
In the lubricating oil composition according to one embodiment of the present invention, the component (C) further preferably contains both the compound (C11) represented by the general formula (C-11) and the compound (C12) represented by the general formula (C-12) from the viewpoint of producing a lubricating oil composition having further improved wear resistance.
In one embodiment of the present invention, the content ratio of the compound (C11) to the compound (C12) [ C11)/(C12) ] is preferably 1/20 to 20/1, more preferably 1/16 to 10/1, more preferably 1/14 to 5/1, still more preferably 1/12 to 2/1, still more preferably 1/11 to 1/1, and particularly preferably 1/10 to 1/2 in terms of mass ratio.
In one embodiment of the present invention, the acid phosphate and the acid phosphite used as the component (C) may be in the form of amine salts.
As the amine forming the amine salt, a compound represented by the following general formula (c-i) is preferable. The amine may be used alone or in combination of 2 or more.
[ chemical formula 8]
(R x ) r -N-(H) 3-r (c-i)
In the above general formula (c-i), r is an integer of 1 to 3, preferably 1.
R x Each independently represents an alkyl group having 6 to 18 carbon atoms, an alkenyl group having 6 to 18 carbon atoms, an aryl group having 6 to 18 carbon atoms, or a hydroxyalkyl group having 6 to 18 carbon atoms.
In the presence of a plurality of R x In the case of (1), a plurality of R x Can be the sameMay be different from each other.
As can be selected as R x The C6-18 alkyl group, the C6-18 alkenyl group and the C6-18 aryl group are exemplified as the groups which can be selected as R 11 ～R 13 And R is 21 ～R 23 The alkyl, alkenyl and aryl groups of (a) are exemplified by those having the above-mentioned ranges of carbon atoms.
Examples of the hydroxyalkyl group having 6 to 18 carbon atoms include a group in which a hydrogen atom of an alkyl group having 6 to 18 carbon atoms is substituted with a hydroxyl group, and concretely include a hydroxyhexyl group, a hydroxyoctyl group, a hydroxydodecyl group, and a hydroxytridecyl group.
In the lubricating oil composition according to one embodiment of the present invention, the content of the component (C) is preferably 0.01 mass% or more, more preferably 0.05 mass% or more, still more preferably 0.07 mass% or more, still more preferably 0.10 mass% or more, particularly preferably 0.15 mass% or more, and may be 0.17 mass% or more, 0.20 mass% or more, 0.23 mass% or more, 0.25 mass% or more, 0.27 mass% or 0.30 mass% or more, based on the total amount (100 mass%) of the lubricating oil composition, from the viewpoint of producing a lubricating oil composition having further improved wear resistance, the content is preferably 3.0 mass% or less, more preferably 2.5 mass% or less, still more preferably 2.0 mass% or less, still more preferably 1.5 mass% or less, particularly preferably 1.2 mass% or less, and may be 1.0 mass% or less, 0.95 mass% or less, 0.90 mass% or less, 0.85 mass% or less, 0.80 mass% or less, 0.75 mass% or less, 0.70 mass% or less, 0.65 mass% or less, 0.60 mass% or less, 0.55 mass% or 0.50 mass% or less.
In the lubricating oil composition according to one embodiment of the present invention, the content of the component (C) in terms of the phosphorus atom transition is preferably 30 mass ppm or more, more preferably 50 mass ppm or more, still more preferably 70 mass ppm or more, still more preferably 100 mass ppm or more, still more preferably 120 mass ppm or more, still more preferably 150 mass ppm or more, still more preferably 180 mass ppm or more, still more preferably 200 mass ppm or more, still more preferably 220 mass ppm or more, still more preferably 250 mass ppm or more, particularly preferably 270 mass ppm or more, still more preferably 800 mass ppm or less, still more preferably 700 mass ppm or less, still more preferably 600 mass ppm or less, still more preferably 500 mass ppm or less, still more preferably 450 mass ppm or less, yet still more preferably 400 mass ppm or less, 380 mass ppm or less, 370 mass ppm or 360 mass ppm or 350 mass ppm or less, from the viewpoint of producing a lubricating oil composition with further improved wear resistance.
In the present specification, the content of phosphorus atom means a value measured in accordance with JPI-5S-38-92.
In the lubricating oil composition according to one embodiment of the present invention, the content of the component (C) in terms of the sulfur atom conversion is preferably 50 mass ppm or more, more preferably 70 mass ppm or more, still more preferably 100 mass ppm or more, still more preferably 120 mass ppm or more, still more preferably 150 mass ppm or more, still more preferably 180 mass ppm or more, still more preferably 200 mass ppm or more, still more preferably 220 mass ppm or more, still more preferably 250 mass ppm or more, still more preferably 270 mass ppm or more, particularly preferably 300 mass ppm or more, still more preferably 800 mass ppm or less, still more preferably 700 mass ppm or less, still more preferably 600 mass ppm or less, still more preferably 500 mass ppm or less, still more preferably 450 mass ppm or less, yet still more preferably 400 mass ppm or less, 380 mass ppm or less, 370 mass ppm or 360 mass ppm or 350 mass ppm or less, from the viewpoint of producing a lubricating oil composition with further improved wear resistance.
In the present specification, the content of phosphorus atom means a value measured in accordance with JPI-5S-38-92.
In the lubricating oil composition according to one embodiment of the present invention, the content of the acidic phosphate ester containing no sulfur atom in terms of phosphorus atom conversion may be less than 100 mass ppm, less than 50 mass ppm, less than 10 mass ppm, less than 8 mass ppm, less than 5 mass ppm, less than 3 mass ppm, or less than 1 mass ppm, based on the total amount (100 mass%) of the lubricating oil composition.
In the lubricating oil composition according to one embodiment of the present invention, the content of the neutral phosphate ester containing no sulfur atom in terms of phosphorus atom conversion is less than 50 mass ppm, less than 10 mass ppm, less than 8 mass ppm, less than 5 mass ppm, less than 3 mass ppm, or less than 1 mass ppm, based on the total amount (100 mass%) of the lubricating oil composition.
< various additives other than Components (B) to (C) >)
The lubricating oil composition according to one embodiment of the present invention may contain various additives other than the components (B) to (C) as necessary within a range that does not impair the effects of the present invention.
Examples of such various additives include antioxidants, metal detergents, ashless dispersants, metal deactivators, rust inhibitors, antifoaming agents, and pour point depressants.
These additives for lubricating oil may be used alone or in combination of 2 or more.
The content of each of these additives for lubricating oils can be appropriately adjusted within a range not to impair the effects of the present invention, and is usually 0.001 to 15% by mass, preferably 0.005 to 10% by mass, more preferably 0.01 to 5% by mass, based on the total amount (100% by mass) of the lubricating oil composition, independently of each other.
[ antioxidant ]
The lubricating oil composition according to one embodiment of the present invention may further contain an antioxidant. The antioxidant may be used alone or in combination of 2 or more.
Examples of the antioxidant used in one embodiment of the present invention include amine antioxidants such as alkylated diphenylamine, phenylnaphthylamine, and alkylated phenylnaphthylamine; phenolic antioxidants such as 2, 6-di-t-butylphenol, 4' -methylenebis (2, 6-di-t-butylphenol), isooctyl 3- (3, 5-di-t-butyl-4-hydroxyphenyl) propionate, and n-octadecyl 3- (3, 5-di-t-butyl-4-hydroxyphenyl) propionate.
In the lubricating oil composition according to one embodiment of the present invention, the antioxidant is preferably a combination of an amine-based antioxidant and a phenol-based antioxidant.
[ Metal-based detergent ]
The lubricating oil composition according to one embodiment of the present invention may further contain a metal-based detergent. The metal-based detergent may be used alone or in combination of 2 or more.
Examples of the metal-based detergent used in one embodiment of the present invention include metal salts such as metal sulfonates, metal salicylates, and metal phenates. The metal atom constituting the metal salt is preferably a metal atom selected from alkali metals and alkaline earth metals, more preferably sodium, calcium, magnesium, or barium, and still more preferably calcium.
In the lubricating oil composition according to one embodiment of the present invention, the metal-based detergent preferably contains 1 or more selected from the group consisting of calcium sulfonate, calcium salicylate, and calcium phenate, and more preferably contains calcium sulfonate.
The content of calcium sulfonate is preferably 50 to 100 mass%, more preferably 60 to 100 mass%, even more preferably 70 to 100 mass%, and even more preferably 80 to 100 mass%, based on the total amount (100 mass%) of the metal-based detergent contained in the lubricating oil composition.
The base number of the metal-based detergent is preferably 0 to 600mgKOH/g.
Among these, in the lubricating oil composition according to one embodiment of the present invention, the metal-based detergent is preferably an overbased metal-based detergent having a base number of 100mgKOH/g or more.
The overbased metal detergent has a base number of 100mgKOH/g or more, preferably 150 to 500mgKOH/g, and more preferably 200 to 450mgKOH/g.
In the present specification, "base number" means "base number" in accordance with JIS K2501:2003 "Petroleum products and lubricating oil-neutralization number test method" 7. Base number measured based on the perchloric acid method.
[ ashless dispersant ]
In the lubricating oil composition according to one embodiment of the present invention, the ashless dispersant may be further contained from the viewpoint of improving dispersibility of the component (B) and the component (C). The ashless dispersant may be used alone or in combination of 2 or more.
As the ashless dispersant used in one embodiment of the present invention, an alkenylsuccinic acid imide is preferable, and examples thereof include an alkenylsuccinic acid bisimide represented by the following general formula (d-1), an alkenylsuccinic acid monoimide represented by the following general formula (d-2), and the like.
[ chemical formula 9]
In the above general formulae (d-1) and (d-2), R a1 、R a2 And R is a3 Each independently is an alkenyl group having a mass average molecular weight (Mw) of 500 to 3000 (preferably 900 to 2500).
As can be selected as R a1 、R a2 And R is a3 Examples of the alkenyl group include a polybutenyl group, a polyisobutenyl group, and an ethylene-propylene copolymer, and among them, a polybutenyl group and a polyisobutenyl group are preferable.
R b1 、R b2 And R is b3 Each independently represents an alkylene group having 2 to 5 carbon atoms.
z1 is an integer of 0 to 10, preferably an integer of 1 to 4, more preferably 2 or 3.
z2 is an integer of 1 to 10, preferably an integer of 2 to 5, more preferably 3 or 4.
The compound represented by the general formula (d-1) or (d-2) may be a modified alkenylsuccinic acid imide obtained by reacting with 1 or more selected from the group consisting of a boron compound, an alcohol, an aldehyde, a ketone, an alkylphenol, a cyclic carbonate, an epoxy compound, an organic acid, and the like.
[ Metal deactivator ]
The lubricating oil composition according to one embodiment of the present invention may further contain a metal deactivator. The metal deactivator may be used alone or in combination of 2 or more.
Examples of the metal deactivator used in one embodiment of the present invention include benzotriazole-based compounds, methylbenzotriazole-based compounds, imidazole-based compounds, pyrimidine-based compounds, and the like.
[ antirust agent ]
The lubricating oil composition according to one embodiment of the present invention may further contain an anti-rust agent. The rust inhibitor may be used alone or in combination of 2 or more.
Examples of the rust inhibitor used in one embodiment of the present invention include fatty acids, alkenyl succinic acid half esters, fatty acid soaps, alkyl sulfonates, polyol fatty acid esters, fatty acid amines, oxidized paraffins, and alkyl polyoxyethylene ethers.
[ defoamer ]
The lubricating oil composition according to one embodiment of the present invention may further contain an antifoaming agent. The defoaming agent may be used alone or in combination of 2 or more.
Examples of the defoaming agent used in one embodiment of the present invention include silicone oil, fluorosilicone oil, and fluoroalkyl ether.
[ pour Point depressant ]
The lubricating oil composition of one embodiment of the present invention may further contain a pour point depressant. The pour point depressant may be used alone or in combination of 2 or more.
Examples of the pour point depressant used in one embodiment of the present invention include ethylene-vinyl acetate copolymer, condensate of chlorinated paraffin and naphthalene, condensate of chlorinated paraffin and phenol, polymethacrylate, and polyalkylstyrene.
< method for producing lubricating oil composition >
The method for producing the lubricating oil composition according to one embodiment of the present invention is not particularly limited, and from the viewpoint of productivity, it is preferable to have the following steps: component (B) is blended with component (A) and the content of the sulfurized olefin is less than 0.20% by mass based on the total amount of the lubricating oil compositionThe kinematic viscosity at 100℃is 2.1mm 2 Above/s and less than 5.0mm 2 Preparation is carried out in the manner of/s.
When component (B) is blended with component (a), it is preferable to blend component (C) and various other additives other than components (B) to (C) as needed.
The preferable compounds and blending amounts of the components (a), (B) and (C) and various additives are as described above.
[ Properties of lubricating oil composition ]
The viscosity index of the lubricating oil composition according to one embodiment of the present invention is preferably 80 or more, more preferably 90 or more, still more preferably 100 or more, and still more preferably 110 or more.
In the lubricating oil composition according to one embodiment of the present invention, the content of molybdenum atoms may be less than 100 mass ppm, less than 50 mass ppm, less than 30 mass ppm, less than 20 mass ppm, less than 10 mass ppm, less than 7 mass ppm, less than 5 mass ppm, less than 3 mass ppm, or less than 2 mass ppm, based on the total amount (100 mass%) of the lubricating oil composition.
In the present specification, the molybdenum content refers to a value measured in accordance with JPI-5S-38-92.
The flash point of the lubricating oil composition according to one embodiment of the present invention is preferably 160 ℃ or higher, more preferably 164 ℃ or higher, still more preferably 170 ℃ or higher, still more preferably 174 ℃ or higher, particularly preferably 180 ℃ or higher, and may be 300 ℃ or lower, 280 ℃ or lower, 260 ℃ or lower, or 250 ℃ or lower, from the viewpoint of producing a lubricating oil composition excellent in safety.
In the present specification, the flash point means a value measured by the Cleveland Open Cup (COC) method according to ASTM D92.
From the viewpoint of improving the solubility of component (B), the aniline point of the lubricating oil composition according to one embodiment of the present invention is preferably 80 to 120 ℃, more preferably 85 to 118 ℃, still more preferably 90 to 115 ℃, still more preferably 95 to 112 ℃, and particularly preferably 100 to 110 ℃.
In the present specification, the aniline point means a value measured in accordance with ASTM D611.
In the lubricating oil composition according to one embodiment of the present invention, as described in examples described below in JIS K2242, a silver rod heated to 200℃is placed in 200mL of the lubricating oil composition heated to 80℃and the surface temperature of the silver rod after 12 seconds is preferably 150.0℃or less, more preferably 149.0 ℃or less, still more preferably 148.0 ℃or less, still more preferably 147.0℃or less, and particularly preferably 146.0℃or less.
The lubricating oil composition according to one embodiment of the present invention preferably has a load rating of 5 or more, more preferably 6 or more, still more preferably 7 or more, still more preferably 8 or more, when subjected to seizure, as measured under the conditions described in examples below, in accordance with ASTM D5182.
The volume resistivity of the lubricating oil composition according to one embodiment of the present invention is preferably 2.0X10 when measured under the conditions described in examples described below in accordance with JIS C2101 7 Omega.m or more, more preferably 2.2X10 7 Omega.m or more, more preferably 2.4X10 7 Omega.m or more, more preferably 2.8X10 7 Omega.m or more, particularly preferably 3.0X10 7 Omega.m or more, and is usually 1.0X10 9 Omega.m or less.
As described in examples below, the copper flake is used as a catalyst in the lubricating oil composition according to one embodiment of the present invention, and the copper elution amount of the lubricating oil composition when the ISOT test according to JIS K2514 is performed at a temperature of 150 ℃ for 72 hours is preferably 70 mass ppm or less, more preferably 60 mass ppm or less, still more preferably 50 mass ppm or less, still more preferably 40 mass ppm or less, and particularly preferably 35 mass ppm or less.
In the present specification, the amount of copper eluted refers to a value measured in accordance with JPI-5S-38-92.
[ use of lubricating oil composition ]
The lubricating oil composition according to a preferred embodiment of the present invention can improve cooling properties, adhesion resistance and insulation properties in a well-balanced manner.
In view of such characteristics, the lubricating oil composition according to one embodiment of the present invention can be suitably used for lubrication of various devices such as a torque converter, a wet clutch, a gear bearing mechanism, an oil pump, and a hydraulic control mechanism, which are mounted on an engine, a transmission, a reduction gear, a compressor, and a hydraulic device. Among them, the lubricating oil composition according to one embodiment of the present invention is preferably used for lubrication of a speed reducer.
In view of the above-described characteristics of the lubricating oil composition according to one embodiment of the present invention, the present invention may provide the following [1] and [2].
[1]A speed reducer using a lubricating oil composition containing a base oil (A) and a thiadiazole-based compound (B), wherein the content of a sulfurized olefin is less than 0.20% by mass, and the kinematic viscosity at 100 ℃ is 2.1mm 2 Above/s and less than 5.0mm 2 /s。
[2]Contains a base oil (A) and a thiadiazole compound (B) and has a content of a vulcanized olefin of less than 0.20 mass% and a kinematic viscosity at 100 ℃ of 2.1mm 2 Above/s and less than 5.0mm 2 Use of a lubricating oil composition of/s for lubrication of a speed reducer.
The preferable mode of the lubricating oil composition described in the above [1] and [2] is as described above.
Examples
The present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples. The measurement methods of the various physical properties are as follows.
(1) Kinematic viscosity, viscosity index
According to JIS K2283:2000, measurement and calculation were performed.
(2) Content of sulfur atoms
According to JIS K2541-6: 2013.
(3) Content of nitrogen atoms
The measurement was carried out in accordance with JIS K2609.
(4) Content of phosphorus atom and molybdenum
The measurement was performed in accordance with JPI-5S-38-92.
(5) Base number (perchloric acid method)
According to JIS K2501:2003 (perchloric acid method) measurement was performed.
(6) Weight average molecular weight (Mw)
The measurement was performed using a gel permeation chromatography apparatus (manufactured by Agilent corporation, "type 1260 HPLC") under the following conditions, and the measured values were converted into standard polystyrene.
(measurement conditions)
Column: 2 "Shodex LF404" are connected in sequence.
Column temperature: 35 DEG C
Eluent: chloroform (chloroform)
Flow rate: 0.3mL/min
(7) Flash point
The measurement was performed by the Cleveland Open Cup (COC) method according to ASTM D92.
(8) Aniline point
Measured according to ASTM D611.
Examples 1 to 9 and comparative examples 1 to 4
Base oils of the types shown in table 1 and various additives were added and mixed in the blending amounts shown in tables 1 and 2, respectively, to prepare lubricating oil compositions. Details of each component used in the preparation of the lubricating oil composition are as follows. The content of molybdenum atoms in any lubricating oil composition is less than 2 mass ppm.
< base oil >
"mineral oil (1)": 60N hydrocracked mineral oil, 100 ℃ kinematic viscosity = 2.2mm 2 S, viscosity index=108.
"mineral oil (2)": 100N hydrocracked mineral oil, 100 ℃ kinematic viscosity = 4.2mm 2 S, viscosity index=122.
"mineral oil (3)": 150N hydrocracked mineral oil, 100 ℃ kinematic viscosity = 6.0mm 2 S, viscosity index=132.
"PAO (1)": poly alpha-olefins, 100 ℃ kinematic viscosity = 1.8mm 2 /s。
"PAO (2)": poly alpha-olefinsKinematic viscosity at 100 ℃ =2.0 mm 2 /s。
"PAO (3)": poly-alpha-olefins, kinematic viscosity at 100 ℃ = 3.9mm 2 S, viscosity index=120.
< Sulfur Compound >
"thiadiazole (branched)": 2, 5-bis (1, 1-dimethylheptyl dithio) -1,3, 4-thiadiazole, m=n=2, R in the above general formula (b-1) 1 And R is 2 Thiadiazoles which are 1, 1-dimethylheptyl. Sulfur atom content=33.3 mass%, nitrogen atom content=6.4 mass%.
"thiadiazole (straight chain)": 2, 5-bis (n-octyldithio) -1,3, 4-thiadiazole, m=n=2, R in the above general formula (b-1) 1 And R is 2 Thiadiazole, which is n-octyl. Sulfur atom content=34 mass%, nitrogen atom content=4.2 mass%.
"sulfurized olefin": a vulcanized olefin represented by the above general formula (i). Sulfur atom content=43% by mass.
< thiophosphorus compound >
"thiophosphoric compound (1)": a1=2 and R in the above general formula (c-11) A11 Phosphite containing sulfur atom of n-octyl.
"thiophosphoric compound (2)": a2=a3=2 and R in the above general formula (c-12) A21 、R A22 Phosphite containing sulfur atom of n-octyl.
< other additives >
"pour point depressant": polymethacrylate pour point depressants.
"additive mixture": the following additives were mixed and the additive mixture diluted with 70N hydrocracked mineral oil.
Phenolic antioxidants (hindered phenols)
Amine antioxidant (C9 alkylated diphenylamine)
Calcium sulfonate (base number (perchloric acid method) =300 mgKOH/g)
Succinic bisimide with a polybutenyl group mw=960
Benzotriazole
Fatty acid glyceride
Silicone-based antifoaming agent
Kinematic viscosity, viscosity index, flash point and aniline point were measured or calculated for the prepared lubricating oil composition, and the following tests were performed. These results are shown in tables 1 and 2.
(1) Test of Cooling Property
According to "6.2 cooling performance test method (A method: surface temperature measurement method)" of JIS K2242, a silver rod heated to 200℃was put into 250mL of sample oil heated to 80℃and the surface temperature of the silver rod after 12 seconds was measured. The lower the surface temperature of the silver rod is, the more excellent the cooling property is.
(2) FZG gluing test (A10/16.6R/90)
The load was increased stepwise according to a predetermined procedure under conditions of a sample oil temperature of 90℃and a rotational speed of 2900rpm and an operating time of about 7.5 minutes by using an A10 type gear according to ASTM D5182, and the level of the load at the time of occurrence of a rubber compound was determined. The higher the value of this grade, the more excellent the gear seizure resistance can be said to be a lubricating oil composition.
(3) Insulation test
The volume resistivity of the sample oil was measured under test conditions of a measurement temperature of 80℃and an applied voltage of 250V for a measurement time of 1 minute in accordance with JIS C2101. The higher the value of the volume resistivity, the more excellent the insulation property can be said to be a lubricating oil composition.
(4) Copper dissolution test
The ISOT test based on JIS K2514 was performed at a temperature of 150℃for 72 hours using copper sheets and iron sheets as catalysts, deteriorating the sample oil. The amount of copper eluted (unit: mass ppm) was measured by the method according to JPI-5S-38-92 for the sample oil after degradation. The smaller the copper elution amount, the more effective the copper elution inhibition effect is, the more effective the lubricating oil composition can be said to be.
TABLE 1
TABLE 1
TABLE 2
TABLE 2
From tables 1 and 2, the lubricating oil compositions of examples 1 to 9 were low in viscosity, but gave excellent results in terms of balance of cooling property, seizure resistance and insulation property. On the other hand, the lubricating oil compositions of comparative examples 1 and 2 were inferior in the adhesion resistance, and the lubricating oil composition of comparative example 3 was inferior in both the adhesion resistance and the insulation properties. In addition, the lubricating oil composition of comparative example 4 was good in seizure resistance, but was inferior in cooling performance.
Claims (14)
1. A lubricating oil composition comprising a base oil (A) and a thiadiazole compound (B),
the content of sulfurized olefin is less than 0.20 mass% based on the total amount of the lubricating oil composition,
the kinematic viscosity of the lubricating oil composition at 100 ℃ is 2.1mm 2 Above/s and less than 5.0mm 2 /s。
2. The lubricating oil composition according to claim 1, wherein component (B) comprises a thiadiazole-based compound (B1) having a branched alkyl group.
3. The lubricating oil composition according to claim 2, wherein the branched alkyl group of component (B1) has 5 or more carbon atoms.
4. The lubricating oil composition according to any one of claims 1 to 3, wherein component (B) comprises a compound represented by any one of the following general formulae (B-1) to (B-4),
in the formula, R 1 And R is 2 Each independently is a hydrocarbyl group, and m and n are each independently integers from 1 to 10.
5. The lubricating oil composition according to claim 4, wherein R 1 And R is 2 Each independently represents a branched alkyl group having 5 or more carbon atoms.
6. The lubricating oil composition according to any one of claims 1 to 5, wherein the compound represented by the following general formula (B-x) is contained in an amount of less than 10% by mass based on the total amount of the component (B) contained in the lubricating oil composition,
In the formula, R a Is a hydrogen atom or methyl group, R b Is an alkyl group having 1 to 4 carbon atoms, and p is 0 or 1.
7. The lubricating oil composition according to any one of claims 1 to 6, wherein the content of component (B) is 0.01 to 3.0 mass% based on the total amount of the lubricating oil composition.
8. The lubricating oil composition according to any one of claims 1 to 6, wherein the content of component (B) is 0.10 to 1.0 mass% based on the total amount of the lubricating oil composition.
9. The lubricating oil composition according to any one of claims 1 to 8, wherein component (a) is 1 or more selected from mineral oils and synthetic oils classified into group 2 and group 3 of API base oil classes.
10. The lubricating oil composition according to any one of claims 1 to 9, further comprising 1 or more phosphorus-based compounds (C) selected from the group consisting of phosphate esters and phosphites.
11. The lubricating oil composition according to claim 10, wherein component (C) contains 1 or more sulfur-phosphorus compound (C1) selected from the group consisting of a sulfur atom-containing phosphate and a sulfur atom-containing phosphite.
12. The lubricating oil composition according to any one of claims 1 to 11 for lubrication of a speed reducer.
13. Use of the lubricating oil composition according to any one of claims 1 to 12 for lubrication of a speed reducer.
14. A method for producing the lubricating oil composition according to any one of claims 1 to 12, wherein,
the thiadiazole compound (B) is blended into the base oil (A) in such a manner that the content of the sulfurized olefin is less than 0.20% by mass based on the total amount of the lubricating oil composition and the kinematic viscosity of the lubricating oil composition at 100 ℃ is 2.1mm 2 Above/s and less than 5.0mm 2 Preparation is carried out in the manner of/s.
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| JP6247600B2 (en) * | 2014-06-16 | 2017-12-13 | Ｊｘｔｇエネルギー株式会社 | Lubricating oil composition for transmission |
| JPWO2016157955A1 (en) * | 2015-03-31 | 2018-01-25 | Ｊｘｔｇエネルギー株式会社 | Lubricating oil composition |
| JP2020041055A (en) * | 2018-09-11 | 2020-03-19 | Ｅｍｇルブリカンツ合同会社 | Lubricant composition |
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| JP2020180267A (en) * | 2019-04-26 | 2020-11-05 | 出光興産株式会社 | Lubricant composition for driving system device, production method thereof, lubrication method of driving system device, and driving system device |
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