JP7453449B1 - lubricating oil composition - Google Patents
lubricating oil composition Download PDFInfo
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- JP7453449B1 JP7453449B1 JP2023073551A JP2023073551A JP7453449B1 JP 7453449 B1 JP7453449 B1 JP 7453449B1 JP 2023073551 A JP2023073551 A JP 2023073551A JP 2023073551 A JP2023073551 A JP 2023073551A JP 7453449 B1 JP7453449 B1 JP 7453449B1
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- 239000000203 mixture Substances 0.000 title claims abstract description 84
- 239000010687 lubricating oil Substances 0.000 title claims abstract description 62
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical compound O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 26
- 239000003607 modifier Substances 0.000 claims abstract description 24
- 229960002317 succinimide Drugs 0.000 claims abstract description 21
- 239000002199 base oil Substances 0.000 claims abstract description 17
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000011575 calcium Substances 0.000 claims abstract description 15
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 15
- 239000002480 mineral oil Substances 0.000 claims abstract description 15
- 239000003599 detergent Substances 0.000 claims abstract description 14
- VLLMWSRANPNYQX-UHFFFAOYSA-N thiadiazole Chemical compound C1=CSN=N1.C1=CSN=N1 VLLMWSRANPNYQX-UHFFFAOYSA-N 0.000 claims abstract description 14
- 235000010446 mineral oil Nutrition 0.000 claims abstract description 12
- 150000003014 phosphoric acid esters Chemical class 0.000 claims abstract description 12
- 239000002270 dispersing agent Substances 0.000 claims abstract description 11
- COTPAMORPWZHKE-UHFFFAOYSA-H trizinc;thiophosphate;thiophosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([S-])=O.[O-]P([O-])([O-])=S COTPAMORPWZHKE-UHFFFAOYSA-H 0.000 claims abstract description 6
- XYRMLECORMNZEY-UHFFFAOYSA-B [Mo+4].[Mo+4].[Mo+4].[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S Chemical compound [Mo+4].[Mo+4].[Mo+4].[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S XYRMLECORMNZEY-UHFFFAOYSA-B 0.000 claims abstract description 5
- -1 phosphate ester Chemical class 0.000 claims description 29
- 239000003963 antioxidant agent Substances 0.000 claims description 20
- 230000003078 antioxidant effect Effects 0.000 claims description 12
- 150000001412 amines Chemical class 0.000 claims description 9
- 239000002530 phenolic antioxidant Substances 0.000 claims description 7
- 229910019142 PO4 Inorganic materials 0.000 claims description 6
- 239000010452 phosphate Substances 0.000 claims description 6
- 239000012459 cleaning agent Substances 0.000 claims description 4
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 claims description 2
- 125000001931 aliphatic group Chemical group 0.000 claims 1
- 150000007524 organic acids Chemical class 0.000 claims 1
- 235000005985 organic acids Nutrition 0.000 claims 1
- 150000002989 phenols Chemical class 0.000 claims 1
- 238000010586 diagram Methods 0.000 abstract 1
- RMVRSNDYEFQCLF-UHFFFAOYSA-N thiophenol Chemical compound SC1=CC=CC=C1 RMVRSNDYEFQCLF-UHFFFAOYSA-N 0.000 description 12
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical class C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 10
- 239000000654 additive Substances 0.000 description 9
- 239000003638 chemical reducing agent Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 6
- 239000003921 oil Substances 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 4
- 229920000768 polyamine Polymers 0.000 description 4
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 150000005002 naphthylamines Chemical class 0.000 description 3
- FALRKNHUBBKYCC-UHFFFAOYSA-N 2-(chloromethyl)pyridine-3-carbonitrile Chemical compound ClCC1=NC=CC=C1C#N FALRKNHUBBKYCC-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-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
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 150000004982 aromatic amines Chemical class 0.000 description 2
- 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 2
- 239000003245 coal Substances 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 2
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 2
- KHYKFSXXGRUKRE-UHFFFAOYSA-J molybdenum(4+) tetracarbamodithioate Chemical compound C(N)([S-])=S.[Mo+4].C(N)([S-])=S.C(N)([S-])=S.C(N)([S-])=S KHYKFSXXGRUKRE-UHFFFAOYSA-J 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
- 239000001384 succinic acid Substances 0.000 description 2
- 229940014800 succinic anhydride Drugs 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-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
- VFBJXXJYHWLXRM-UHFFFAOYSA-N 2-[2-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]ethylsulfanyl]ethyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCCSCCOC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 VFBJXXJYHWLXRM-UHFFFAOYSA-N 0.000 description 1
- ZVVFVKJZNVSANF-UHFFFAOYSA-N 6-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]hexyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCCCCCCOC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 ZVVFVKJZNVSANF-UHFFFAOYSA-N 0.000 description 1
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- QAPVYZRWKDXNDK-UHFFFAOYSA-N P,P-Dioctyldiphenylamine Chemical compound C1=CC(CCCCCCCC)=CC=C1NC1=CC=C(CCCCCCCC)C=C1 QAPVYZRWKDXNDK-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 230000000573 anti-seizure effect Effects 0.000 description 1
- 125000001204 arachidyl 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])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002511 behenyl 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])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000009286 beneficial effect Effects 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
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- ZMRQTIAUOLVKOX-UHFFFAOYSA-L calcium;diphenoxide Chemical compound [Ca+2].[O-]C1=CC=CC=C1.[O-]C1=CC=CC=C1 ZMRQTIAUOLVKOX-UHFFFAOYSA-L 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 125000000582 cycloheptyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 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
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 125000003187 heptyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001183 hydrocarbyl group Chemical group 0.000 description 1
- 150000003949 imides Chemical class 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000004491 isohexyl group Chemical group C(CCC(C)C)* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 125000002463 lignoceryl 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])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 239000006078 metal deactivator Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000005078 molybdenum compound Substances 0.000 description 1
- 150000002752 molybdenum compounds Chemical class 0.000 description 1
- 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 1
- LSHROXHEILXKHM-UHFFFAOYSA-N n'-[2-[2-[2-(2-aminoethylamino)ethylamino]ethylamino]ethyl]ethane-1,2-diamine Chemical compound NCCNCCNCCNCCNCCN LSHROXHEILXKHM-UHFFFAOYSA-N 0.000 description 1
- NIMCSFUFFFUJQM-UHFFFAOYSA-N n-phenyl-2-(2,4,4-trimethylpentan-2-yl)naphthalen-1-amine Chemical compound CC(C)(C)CC(C)(C)C1=CC=C2C=CC=CC2=C1NC1=CC=CC=C1 NIMCSFUFFFUJQM-UHFFFAOYSA-N 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 150000002903 organophosphorus compounds Chemical class 0.000 description 1
- 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 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 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 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- FAGUFWYHJQFNRV-UHFFFAOYSA-N tetraethylenepentamine Chemical compound NCCNCCNCCNCCN FAGUFWYHJQFNRV-UHFFFAOYSA-N 0.000 description 1
- 150000004867 thiadiazoles Chemical class 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 125000005023 xylyl group Chemical group 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 description 1
- 229910000165 zinc phosphate Inorganic materials 0.000 description 1
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Abstract
【課題】幅広い温度領域において安定的に優れた低摩擦性、耐摩耗性を奏する潤滑油組成物を提供すること。【解決手段】本発明の潤滑油組成物は、鉱物油を含む基油と、モリブデンジチオフォスフェート（ＭｏＤＴＰ）を含む摩擦調整剤と、リン酸エステルと、チアジアゾールとを含む極圧剤と、ジンクチオフォスフェート（ＺｎＤＴＰ）を含む摩耗防止剤と、コハク酸イミドを含む分散剤と、カルシウム系清浄剤と、を含有する、潤滑油組成物である。【選択図】図１An object of the present invention is to provide a lubricating oil composition that stably exhibits excellent low friction and wear resistance over a wide temperature range. [Solution] The lubricating oil composition of the present invention comprises a base oil containing mineral oil, a friction modifier containing molybdenum dithiophosphate (MoDTP), an extreme pressure agent containing phosphoric acid ester, thiadiazole, and zinc thiophosphate. This is a lubricating oil composition containing an anti-wear agent containing ZnDTP, a dispersant containing succinimide, and a calcium-based detergent. [Selection diagram] Figure 1
Description
本発明は、幅広い温度領域において安定的に優れた低摩擦性を有する潤滑油組成物に関する。 The present invention relates to a lubricating oil composition that stably exhibits excellent low friction properties over a wide temperature range.
産業機械や自動車において、エンジン、変速機、減速機、圧縮機、油圧装置等の各種装置には、潤滑油組成物が用いられている。例えば、減速機をみても、造船（タワークレーン等の減速機）、製鉄（各種クレーン、コンベア、ミキサー、圧延機等の減速機、ウォームギヤ）、パルプ製紙（抄紙機、フロアコンベア、ドライヤー等の減速機）、窯業セメント（クラッシャー、ボールミル、ペレタイザー、キルン、コンベア等の減速機）、ゴム、ビニール（ロール軸受、スパー、へベル、ヘルカル、ウォーム等の減速機）、石炭（選炭ベルトコンベア、アンローダの減速機）、電力（バウルミルの減速機）、その他（岸壁荷上機・アンローダ、コンベア、水平引き込み等の減速機）などの種々の産業機械を構成する装置に、潤滑油組成物が用いられている。 In industrial machinery and automobiles, lubricating oil compositions are used in various devices such as engines, transmissions, reduction gears, compressors, and hydraulic devices. For example, if we look at reducers, we can look at shipbuilding (reducers for tower cranes, etc.), steel manufacturing (reducers for various cranes, conveyors, mixers, rolling mills, worm gears, etc.), pulp and paper manufacturing (reducers for paper machines, floor conveyors, dryers, etc.) machines), ceramic cement (reducers for crushers, ball mills, pelletizers, kilns, conveyors, etc.), rubber, vinyl (reducers for roll bearings, spurs, hevels, helicals, worms, etc.), coal (coal washing belt conveyors, unloaders, etc.) Lubricating oil compositions are used in devices that make up various industrial machines, such as reduction gears (speed reducers), electric power (speed reducers for Baur mills), and others (speed reducers for quay loading machines/unloaders, conveyors, horizontal pull-in machines, etc.). There is.
近年、上述した産業用機械や自動車の高性能化の要求に伴い、その様々な要求に対応し得る潤滑油組成物が開発されている。 In recent years, with the demand for higher performance of industrial machines and automobiles mentioned above, lubricating oil compositions that can meet the various demands have been developed.
例えば、特許文献１には、低粘度化に伴う省燃費性に加え、低摩耗と低摩擦とを両立させることを課題として、潤滑油基油に対して、チアジアゾールを含む金属不活性化剤と、アミン系摩擦調整剤とを特定量で配合させた潤滑油組成物が提案されている。 For example, in Patent Document 1, in order to achieve both low wear and low friction in addition to fuel efficiency due to lower viscosity, a metal deactivator containing thiadiazole is added to lubricant base oil. A lubricating oil composition containing a specific amount of amine-based friction modifier has been proposed.
また、特許文献２には、低粘度化に伴う省燃費性に加えて、低摩耗と差動部耐焼き付性とを両立させることを課題として、潤滑油基油に対して、粘度指数向上剤、硫黄系極圧剤、リン系極圧剤、及び無灰分散剤からなる各種の添加剤を配合させた潤滑油組成物が提案されている。 Furthermore, in Patent Document 2, in addition to fuel efficiency due to lower viscosity, the objective is to achieve both low wear and anti-seizure properties for differential parts. Lubricating oil compositions have been proposed in which various additives are blended, including a sulfur-based extreme pressure agent, a phosphorus-based extreme pressure agent, and an ashless dispersant.
しかしながら、これらの先行文献には、幅広い温度領域において安定的に低摩擦性、耐摩耗性を発揮することに関する技術課題については開示も示唆もない。 However, these prior documents do not disclose or suggest technical issues related to stably exhibiting low friction and wear resistance over a wide temperature range.
本発明は、このような実情に鑑みて提案されたものであり、幅広い温度領域において安定的に優れた低摩擦性を奏する潤滑油組成物を提供することを目的とする。 The present invention was proposed in view of the above circumstances, and an object of the present invention is to provide a lubricating oil composition that stably exhibits excellent low friction properties over a wide temperature range.
本発明者は、上述した課題を解決するために鋭意検討を重ねた結果、鉱物油を含む基油に対して、特定の添加剤を組み合わせて配合することで、幅広い温度領域において安定的に優れた低摩擦性を奏することを見出し、本発明を完成するに至った。 As a result of extensive research in order to solve the above-mentioned problems, the inventor of the present invention has found that by blending a base oil containing mineral oil with a combination of specific additives, it is stable and excellent over a wide temperature range. The present inventors have discovered that the material exhibits low friction properties, and have completed the present invention.
（１）本発明の第１の発明は、鉱物油を含む基油と、モリブデンジチオフォスフェート（ＭｏＤＴＰ）を含む摩擦調整剤と、リン酸エステルと、チアジアゾールとを含む極圧剤と、ジンクチオフォスフェート（ＺｎＤＴＰ）を含む摩耗防止剤と、コハク酸イミドを含む分散剤と、カルシウム系清浄剤と、を含有する、潤滑油組成物である。 (1) The first aspect of the present invention is a base oil containing mineral oil, a friction modifier containing molybdenum dithiophosphate (MoDTP), an extreme pressure agent containing phosphoric acid ester, thiadiazole, and zinc thiophosphate. This is a lubricating oil composition containing an anti-wear agent containing (ZnDTP), a dispersant containing succinimide, and a calcium-based detergent.
（２）本発明の第２の発明は、第１の発明において、さらに、アミン系酸化防止剤及び／又はフェノール系酸化防止剤を含有する、潤滑油組成物である。 (2) A second invention of the present invention is a lubricating oil composition which further contains an amine antioxidant and/or a phenolic antioxidant in the first invention.
（３）本発明の第３の発明は、第１又は２の発明において、前記ＭｏＤＴＰの含有量は、組成物１００質量％に対して１．０質量％以上５．０質量％以下の範囲である、潤滑油組成物である。 (3) In a third aspect of the present invention, in the first or second aspect, the content of MoDTP is in a range of 1.0% by mass or more and 5.0% by mass or less based on 100% by mass of the composition. A lubricating oil composition.
（４）本発明の第４の発明は、第１乃至第３のいずれかの発明において、前記リン酸エステル及び前記チアジアゾールの合計含有量は、組成物１００質量％に対して０．５質量％以上５．０質量％以下の範囲である、潤滑油組成物である。 (4) In a fourth aspect of the present invention, in any one of the first to third aspects, the total content of the phosphoric acid ester and the thiadiazole is 0.5% by mass based on 100% by mass of the composition. The lubricating oil composition has a content of 5.0% by mass or less.
（５）本発明の第５の発明は、第１乃至第４のいずれかの発明において、前記ＺｎＤＴＰの含有量は、組成物１００質量％に対して１．０質量％以上５．０量％以下の範囲である、潤滑油組成物である。 (5) A fifth invention of the present invention is that in any one of the first to fourth inventions, the content of the ZnDTP is 1.0% by mass or more and 5.0% by mass based on 100% by mass of the composition. A lubricating oil composition having the following ranges:
（６）本発明の第６の発明は、第１乃至第５のいずれかの発明において、前記コハク酸イミドの含有量は、組成物１００質量％に対して０．１質量％以上３．０質量％以下の範囲である、潤滑油組成物である。 (6) In a sixth aspect of the present invention, in any one of the first to fifth aspects, the content of the succinimide is 0.1% by mass or more and 3.0% by mass based on 100% by mass of the composition. % by mass or less.
（７）本発明の第７の発明は、第１乃至第６のいずれかの発明において、前記カルシウム系清浄剤の含有量は、組成物１００質量％に対して０．１質量％以上１．０質量％以下の範囲である、潤滑油組成物である。 (7) In a seventh aspect of the present invention, in any one of the first to sixth aspects, the content of the calcium-based detergent is 0.1% by mass or more with respect to 100% by mass of the composition. The lubricating oil composition is in the range of 0% by mass or less.
本発明によれば、幅広い温度領域において安定的に優れた低摩擦性を有する潤滑油組成物を提供することができる。例えば、産業機械の軸受や摺動部等に好適に用いることができる。 According to the present invention, it is possible to provide a lubricating oil composition that stably exhibits excellent low friction properties in a wide temperature range. For example, it can be suitably used for bearings, sliding parts, etc. of industrial machinery.
以下、本発明の具体的な実施形態（以下、「本実施の形態」という）について詳細に説明する。なお、本発明は、以下の実施形態に限定されるものではなく、本発明の要旨を変更しない範囲において種々の変更が可能である。 Hereinafter, a specific embodiment of the present invention (hereinafter referred to as "this embodiment") will be described in detail. Note that the present invention is not limited to the following embodiments, and various changes can be made without departing from the gist of the present invention.
≪１．潤滑油組成物≫
本実施の形態に係る潤滑油組成物は、鉱物油を含む基油と、各種の添加剤成分とを含有する潤滑油組成物である。特に、ＳＲＶ試験の評価において、４０℃～１２０℃の広い温度領域に亘って、優れた低摩擦性、耐摩耗性を発揮するものである。したがって、例えば、産業機械の軸受や摺動部等に好適に用いることができる。
≪1. Lubricating oil composition≫
The lubricating oil composition according to the present embodiment is a lubricating oil composition containing a base oil containing mineral oil and various additive components. In particular, in the evaluation of the SRV test, it exhibits excellent low friction and wear resistance over a wide temperature range of 40°C to 120°C. Therefore, it can be suitably used, for example, in bearings, sliding parts, etc. of industrial machinery.
具体的に、本実施の形態に係る潤滑油組成物は、鉱物油を含む基油と、モリブデンジチオフォスフェートを含む摩擦調整剤と、リン酸エステルと、チアジアゾールとを含む極圧剤と、ジンクチオフォスフェートを含む摩耗防止剤と、コハク酸イミドを含む分散剤と、カルシウム系清浄剤と、を含有する、ことを特徴とする。 Specifically, the lubricating oil composition according to the present embodiment includes a base oil containing mineral oil, a friction modifier containing molybdenum dithiophosphate, an extreme pressure agent containing phosphoric acid ester, thiadiazole, and zinc thiophosphate. The present invention is characterized by containing an anti-wear agent containing succinimide, a dispersant containing succinimide, and a calcium-based detergent.
また、好ましくは、アミン系酸化防止剤、フェノール系酸化防止剤、及びチオフェノール系酸化防止剤からなる群から選択される１種以上の酸化防止剤を含有する。 Further, it preferably contains one or more antioxidants selected from the group consisting of amine antioxidants, phenolic antioxidants, and thiophenol antioxidants.
このような潤滑油組成物によれば、後述する実施例でも明確に示すように、幅広い温度領域において安定的に優れた低摩擦性、耐摩耗性を発揮する。 Such a lubricating oil composition stably exhibits excellent low friction and wear resistance over a wide temperature range, as will be clearly shown in the Examples below.
［基油］
基油（潤滑油基油）は、潤滑油組成物の主成分をなすものである。本実施の形態に係る潤滑油組成物では、基油として鉱物油を含有する。
[Base oil]
The base oil (lubricating oil base oil) is the main component of the lubricating oil composition. The lubricating oil composition according to this embodiment contains mineral oil as a base oil.
鉱物油とは、天然の原油から分離、蒸留、精製されて得られる油である。鉱物油としては、特に限定されず、例えば、液体石油、パラフィン系、ナフテン系、あるいは混合パラフィン／ナフテン系の溶媒処理又は酸処理されたものを用いることができる。なお、このような鉱物油は、一般的に合成油よりも安価であり、基油として鉱物油を用いることで、安価に潤滑油組成物を製造することができる。 Mineral oil is oil obtained by separating, distilling, and refining natural crude oil. The mineral oil is not particularly limited, and for example, liquid petroleum, paraffinic, naphthenic, or mixed paraffin/naphthenic oil treated with a solvent or acid can be used. Note that such mineral oils are generally cheaper than synthetic oils, and by using mineral oils as base oils, lubricating oil compositions can be manufactured at low cost.
鉱物油は、１種を単独で用いてもよく、２種以上を混合して用いてもよい。また、潤滑油組成物の有利な効果を損なわない範囲で、合成油を混合してもよい。 Mineral oils may be used alone or in combination of two or more. In addition, synthetic oils may be mixed in to the extent that the beneficial effects of the lubricating oil composition are not impaired.
基油の含有量は、特に限定されないが、例えば、組成物全量（１００質量％）に対して７０質量％以上９０質量％以下程度とすることができる。なお、複数種類の基油を混合して配合する場合、その合計含有量が上述した範囲となるようにする。 The content of the base oil is not particularly limited, but can be, for example, approximately 70% by mass or more and 90% by mass or less based on the total amount of the composition (100% by mass). In addition, when a plurality of types of base oils are mixed and blended, the total content should be within the above-mentioned range.
［摩擦調整剤］
本実施の形態に係る潤滑油組成物は、モリブデンジチオフォスフェート（ＭｏＤＴＰ）を含む摩擦調整剤を含有する。ＭｏＤＴＰは、硫黄を含有する有機モリブデン化合物であり、摩擦調整剤として作用する。ＭｏＤＴＰは、塗布した摩擦面における摩擦によって、層状構造の結晶からなる二硫化モリブデン（Ｍｏ２Ｓ）の被膜（Ｍｏ膜）を形成させ、その被膜により摩擦を低減する。この潤滑油組成物では、摩擦調整剤としてＭｏＤＴＰを含有することにより、優れた低摩擦性、耐摩耗性を発揮する。
[Friction modifier]
The lubricating oil composition according to the present embodiment contains a friction modifier containing molybdenum dithiophosphate (MoDTP). MoDTP is a sulfur-containing organomolybdenum compound that acts as a friction modifier. MoDTP forms a molybdenum disulfide (Mo 2 S) film (Mo film) consisting of layered crystals due to friction on the applied friction surface, and this film reduces friction. This lubricating oil composition exhibits excellent low friction and wear resistance by containing MoDTP as a friction modifier.
摩擦調整剤であるＭｏＤＴＰの含有量は、特に限定されないが、組成物全量（１００質量％）に対して１．０質量％以上５．０質量％以下の割合とすることが好ましい。 The content of MoDTP, which is a friction modifier, is not particularly limited, but it is preferably in a proportion of 1.0% by mass or more and 5.0% by mass or less based on the total amount of the composition (100% by mass).
なお、摩擦調整剤としては、ＭｏＤＴＰに加えて、他の種類の化合物を併用してもよい。他の種類の摩擦調整剤としては、例えば、有機モリブデン化合物であるモリブデンジチオカーバメート（ＭｏＤＴＣ）等の金属摩擦調整剤や、アミン系摩擦調整剤、アミド系摩擦調整剤、エステル系摩擦調整剤、エーテル系摩擦調整剤、イミド系摩擦調整剤等の金属を有しない有機摩擦調整剤が挙げられる。 In addition to MoDTP, other types of compounds may be used in combination as the friction modifier. Other types of friction modifiers include, for example, metal friction modifiers such as molybdenum dithiocarbamate (MoDTC), which is an organic molybdenum compound, amine friction modifiers, amide friction modifiers, ester friction modifiers, and ether friction modifiers. Examples include metal-free organic friction modifiers such as friction modifiers based on friction modifiers and imide friction modifiers.
［極圧剤］
本実施の形態に係る潤滑油組成物は、リン酸エステルと、チアジアゾールとを含む極圧剤を含有する。このように、リン酸エステルと、チアジアゾールとを含む極圧剤を含有することによりで、優れた低摩擦性、耐摩耗性を発揮する。
[Extreme pressure agent]
The lubricating oil composition according to the present embodiment contains an extreme pressure agent containing a phosphoric acid ester and thiadiazole. In this way, by containing the extreme pressure agent containing phosphoric acid ester and thiadiazole, excellent low friction properties and wear resistance are exhibited.
リン酸エステル（リン酸エステル系極圧剤）としては、種々のものを用いることができるが、その中でも、トリクレジルフォスフェートを用いることが好ましい。このようなリン酸エステルを用いることで、極圧性を有効に向上させることができる。なお、リン酸エステルは、１種単独で用いてもよく、２種以上を併用してもよい。 Various types of phosphoric acid ester (phosphoric acid ester-based extreme pressure agent) can be used, but among them, it is preferable to use tricresyl phosphate. By using such a phosphoric acid ester, extreme pressure properties can be effectively improved. In addition, phosphoric acid ester may be used individually by 1 type, and may use 2 or more types together.
チアジアゾールとしては、種々のもの用いることができる。例えば、２，５－（ｔｅｒｔ－オクチルジチオ）－１，３，４－チアジアゾール、２，５－（ｔｅｒｔ－ノニルジチオ）－１，３，４－チアジアゾール、２，５－（ｔｅｒｔ－デシルジチオ）－１，３，４－チアジアゾール、２，５－（ｔｅｒｔ－ウンデシルジチオ）－１，３，４－チアジアゾール、２，５－（ｔｅｒｔ－ドデシルジチオ）－１，３，４－チアジアゾール、２，５－（ｔｅｒｔ－トリデシルジチオ）－１，３，４－チアジアゾール、２，５－（ｔｅｒｔ－テトラデシルジチオ）－１，３，４－チアジアゾール、２，５－（ｔｅｒｔ－ペンタデシルジチオ）－１，３，４－チアジアゾール、２，５－（ｔｅｒｔ－ヘキサデシルジチオ）－１，３，４－チアジアゾール、２，５－（ｔｅｒｔ－ヘプタデシルジチオ）－１，３，４－チアジアゾール、２，５－（ｔｅｒｔ－オクタデシルジチオ）－１，３，４－チアジアゾール、２，５－（ｔｅｒｔ－ノナデシルジチオ）－１，３，４－チアジアゾールまたは２，５－（ｔｅｒｔ－エイコシルジチオ）－１，３，４－チアジアゾール、およびこれらのオリゴマー及び混合物が挙げられる。なお、チアジアゾールは、１種単独で用いてもよく、２種以上を併用してもよい。 Various thiadiazoles can be used. For example, 2,5-(tert-octyldithio)-1,3,4-thiadiazole, 2,5-(tert-nonyldithio)-1,3,4-thiadiazole, 2,5-(tert-decyldithio)-1 , 3,4-thiadiazole, 2,5-(tert-undecyldithio)-1,3,4-thiadiazole, 2,5-(tert-dodecyldithio)-1,3,4-thiadiazole, 2,5-(tert -tridecyldithio)-1,3,4-thiadiazole, 2,5-(tert-tetradecyldithio)-1,3,4-thiadiazole, 2,5-(tert-pentadecyldithio)-1,3,4- Thiadiazole, 2,5-(tert-hexadecyldithio)-1,3,4-thiadiazole, 2,5-(tert-heptadecyldithio)-1,3,4-thiadiazole, 2,5-(tert-octadecyl dithio)-1,3,4-thiadiazole, 2,5-(tert-nonadecyldithio)-1,3,4-thiadiazole or 2,5-(tert-eicosyldithio)-1,3,4-thiadiazole, and Mention may be made of oligomers and mixtures. Note that thiadiazole may be used alone or in combination of two or more.
極圧剤であるリン酸エステルの含有量は、特に限定されないが、組成物全量（１００質量％）に対して０．５質量％以上４．０質量％以下の範囲とすることが好ましい。また、チアジアゾールの含有量は、特に限定されないが、組成物全量（１００質量％）に対して０．０５質量％以上１．０質量％以下の範囲とすることが好ましい。 The content of the phosphoric acid ester, which is an extreme pressure agent, is not particularly limited, but is preferably in the range of 0.5% by mass or more and 4.0% by mass or less based on the total amount of the composition (100% by mass). Further, the content of thiadiazole is not particularly limited, but it is preferably in the range of 0.05% by mass or more and 1.0% by mass or less based on the total amount of the composition (100% by mass).
また、潤滑油組成物において、極圧剤であるリン酸エステル及びチアジアゾールの合計含有量としては、組成物全量（１００質量％）に対して０．５質量％以上５．０質量％以下の範囲とすることが好ましい。 In addition, in the lubricating oil composition, the total content of phosphate ester and thiadiazole, which are extreme pressure agents, is in the range of 0.5% by mass or more and 5.0% by mass or less based on the total amount of the composition (100% by mass). It is preferable that
［摩耗防止剤］
本実施の形態に係る潤滑油組成物は、ジンクチオフォスフェート（ＺｎＤＴＰ）を含む摩耗防止剤を含有する。ＺｎＤＴＰは、下記一般式で表される化合物であり、摩耗防止剤（耐摩耗剤）として作用する。ＺｎＤＴＰは、塗布した摩擦面における摩擦により、リン酸亜鉛の被膜（Ｚｎ膜）を形成させ、その被膜により摩耗を低減する。この潤滑油組成物では、摩耗防止剤としてＺｎＤＴＰを含有することにより、優れた低摩擦性、耐摩耗性を発揮する。
[Anti-wear agent]
The lubricating oil composition according to the present embodiment contains an anti-wear agent containing zinc thiophosphate (ZnDTP). ZnDTP is a compound represented by the following general formula, and acts as an anti-wear agent. ZnDTP forms a film of zinc phosphate (Zn film) due to friction on the applied friction surface, and this film reduces wear. This lubricating oil composition exhibits excellent low friction and wear resistance by containing ZnDTP as an antiwear agent.
上記の一般式において、Ｒ１～Ｒ４は炭化水素基（アルキル基）であり、同一であっても異なるものであってもよい。例えば、Ｒ１～Ｒ４としては、メチル基、エチル基、プロピル基、イソプロピル基、ブチル基、第２級ブチル基、イソブチル基、ペンチル基、４－メチルペンチル基、ヘキシル基、２－エチルヘキシル基、ヘプチル基、オクチル基、ノニル基、デシル基、イソデシル基、ドデシル基、テトラデシル基、ヘキサデシル基、オクタデシル基、エイコシル基、ドコシル基、テトラコシル基、シクロペンチル基、シクロヘキシル基、メチルシクロヘキシル基、エチルシクロヘキシル基、ジメチルシクロヘキシル基、シクロヘプチル基、フェニル基、トリル基、キシリル基、エチルフェニル基、プロピルフェニル基、ブチルフェニル基、ペンチルフェニル基、ヘキシルフェニル基、ヘプチルフェニル基、オクチルフェニル基、ノニルフェニル基、デシルフェニル基、ドデシルフェニル基、テトラデシルフェニル基、ヘキサデシルフェニル基、オクタデシルフェニル基、ベンジル基が挙げられる。 In the above general formula, R 1 to R 4 are hydrocarbon groups (alkyl groups) and may be the same or different. For example, R 1 to R 4 include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, a secondary butyl group, an isobutyl group, a pentyl group, a 4-methylpentyl group, a hexyl group, and a 2-ethylhexyl group. , heptyl group, octyl group, nonyl group, decyl group, isodecyl group, dodecyl group, tetradecyl group, hexadecyl group, octadecyl group, eicosyl group, docosyl group, tetracosyl group, cyclopentyl group, cyclohexyl group, methylcyclohexyl group, ethylcyclohexyl group , dimethylcyclohexyl group, cycloheptyl group, phenyl group, tolyl group, xylyl group, ethylphenyl group, propylphenyl group, butylphenyl group, pentylphenyl group, hexylphenyl group, heptylphenyl group, octylphenyl group, nonylphenyl group, Examples include decylphenyl group, dodecylphenyl group, tetradecylphenyl group, hexadecylphenyl group, octadecylphenyl group, and benzyl group.
摩耗防止剤であるＺｎＤＴＰの含有量は、特に限定されないが、組成物全量（１００質量％）に対して１．０質量％以上５．０質量％以下の範囲とすることが好ましい。 The content of ZnDTP, which is an anti-wear agent, is not particularly limited, but is preferably in the range of 1.0% by mass or more and 5.0% by mass or less based on the total amount of the composition (100% by mass).
なお、摩擦調整剤としては、ＺｎＤＴＰに加えて、他の種類の化合物を併用してもよい。他の種類の摩擦調整剤としては、例えば、有機リン化合物が挙げられる。 In addition to ZnDTP, other types of compounds may be used as the friction modifier. Other types of friction modifiers include, for example, organic phosphorus compounds.
［分散剤］
本実施の形態に係る潤滑油組成物は、コハク酸イミドを含む分散剤を含有する。コハク酸イミドを含む分散剤は、組成物を構成する添加剤を基油中に良好に分散させることができ、低摩擦性、耐摩耗性を向上させる。また、コハク酸イミドは、摩耗防止性を向上させるようにも作用する。
[Dispersant]
The lubricating oil composition according to this embodiment contains a dispersant containing succinimide. A dispersant containing succinimide can satisfactorily disperse the additives constituting the composition in the base oil, improving low friction properties and wear resistance. Succinimide also acts to improve anti-wear properties.
コハク酸イミドとしては、例えば、イミド化に際してポリアミンの一端に無水コハク酸が付加したモノタイプコハク酸イミド、ポリアミンの両端に無水コハク酸が付加しビスタイプコハク酸イミドが挙げられる。また、モノタイプコハク酸イミドやビスタイプコハク酸イミドをホウ素変性させたホウ素化コハク酸イミドを用いることができる。 Examples of the succinimide include monotype succinimide, in which succinic anhydride is added to one end of a polyamine during imidization, and bis-type succinimide, in which succinic anhydride is added to both ends of the polyamine. Further, boronated succinimide obtained by modifying mono-type succinimide or bis-type succinimide with boron can be used.
具体的に、コハク酸イミドは、例えば、炭素数４０～４００のアルキル基又はアルケニル基を有する化合物を、無水マレイン酸と１００～２００℃で反応させて得たアルキルコハク酸又はアルケニルコハク酸をポリアミンと反応させることにより得られる。ポリアミンとしては、ジエチレントリアミン、トリエチレンテトラミン、テトラエチレンペンタミン、ペンタエチレンヘキサミン等が例示できる。 Specifically, succinimide is, for example, an alkyl succinic acid or alkenyl succinic acid obtained by reacting a compound having an alkyl group or an alkenyl group having 40 to 400 carbon atoms with maleic anhydride at 100 to 200°C, and a polyamine. Obtained by reacting with Examples of polyamines include diethylenetriamine, triethylenetetramine, tetraethylenepentamine, and pentaethylenehexamine.
分散剤であるコハク酸イミドの含有量は、特に限定されないが、組成物全量（１００質量％）に対して０．１質量％以上３．０質量％以下の範囲とすることが好ましい。 The content of succinimide, which is a dispersant, is not particularly limited, but is preferably in the range of 0.1% by mass or more and 3.0% by mass or less based on the total amount of the composition (100% by mass).
［清浄剤］
本実施の形態に係る潤滑油組成物は、カルシウム系清浄剤を含有する。カルシウム系清浄剤は、潤滑油組成物を塗布する塗布面（金属面）の汚れ（スラッジ、デポジット等）を除去し、またそれら汚れの付着を防止して清浄化する機能を有する。これにより、この潤滑油組成物を構成する上述した添加剤による低摩擦性、耐摩耗性をより一層に向上させることができる。
[Cleaning agent]
The lubricating oil composition according to this embodiment contains a calcium-based detergent. Calcium-based detergents have the function of removing dirt (sludge, deposits, etc.) from the coating surface (metal surface) on which the lubricating oil composition is applied, and also of cleaning by preventing the adhesion of such dirt. Thereby, the low friction properties and wear resistance of the above-mentioned additives constituting this lubricating oil composition can be further improved.
カルシウム系清浄剤としては、カルシウムスルホネート、カルシウムフェネート、カルシウムサリシレート等が挙げられる。これらのカルシウム系清浄剤は、１種単独で用いてもよく、２種以上を混合して用いてもよい。その中でも特に、カルシウム系清浄剤は、過塩基性のカルシウムサリシレートであることが好ましい（塩基価が１５０～５００ｍｇＫＯＨ／ｇ、特には２５０～５００ｍｇＫＯＨ／ｇ）。これにより、潤滑油に必要な酸中和性を確保することができる。 Examples of calcium-based detergents include calcium sulfonate, calcium phenate, calcium salicylate, and the like. These calcium-based detergents may be used alone or in combination of two or more. Among these, the calcium-based detergent is preferably an overbased calcium salicylate (base number is 150 to 500 mgKOH/g, particularly 250 to 500 mgKOH/g). This makes it possible to ensure the acid neutralizing properties necessary for the lubricating oil.
カルシウム系清浄剤の含有量は、特に限定されないが、組成物全量（１００質量％）に対して０．１質量％以上１．０質量％以下の範囲であることが好ましい。 The content of the calcium-based detergent is not particularly limited, but is preferably in the range of 0.1% by mass or more and 1.0% by mass or less based on the total amount of the composition (100% by mass).
なお、清浄剤としては、カルシウム系清浄に加えて、他の種類の清浄剤を併用してもよい。他の種類の清浄剤としては、過塩基性のマグネシウム系清浄剤等が挙げられる。 In addition to the calcium-based cleaning agent, other types of cleaning agents may be used in combination. Other types of detergents include overbased magnesium detergents and the like.
［酸化防止剤］
必須の構成ではないが、本実施の形態に係る潤滑油組成物においては、さらに酸化防止剤を含有させることができる。酸化防止剤としては、アミン系酸化防止剤、フェノール系酸化防止剤、チオフェノール系酸化防止剤等が挙げられ、これらの１種以上を含有させることができる。
[Antioxidant]
Although not an essential component, the lubricating oil composition according to the present embodiment may further contain an antioxidant. Examples of the antioxidant include amine antioxidants, phenolic antioxidants, thiophenol antioxidants, etc., and one or more of these can be contained.
酸化防止剤の含有量は、特に限定されないが、組成物全量（１００質量％）に対して０．０５質量％以上３．０質量％以下であることが好ましく、０．１質量％以上２．０質量％以下であることがより好ましい。 The content of the antioxidant is not particularly limited, but it is preferably 0.05% by mass or more and 3.0% by mass or less, and 0.1% by mass or more and 2.0% by mass or less based on the total amount of the composition (100% by mass). More preferably, it is 0% by mass or less.
（アミン系酸化防止剤）
アミン系酸化防止剤としては、特に限定されないが、芳香族アミン系酸化防止剤を用いることが好ましい。芳香族アミノ酸系酸化防止剤としては、アルキル化ジフェニルアミン、アルキル化ナフチルアミンが挙げられる。潤滑油組成物においては、１種単独で用いてもよく、２種以上を屏東してもよい。例えば、芳香族アミン系酸化防止剤であるアルキル化ジフェニルアミン及びアルキル化ナフチルアミンを組み合わせにて含有させてもよい。
(Amine antioxidant)
The amine antioxidant is not particularly limited, but it is preferable to use an aromatic amine antioxidant. Examples of aromatic amino acid antioxidants include alkylated diphenylamine and alkylated naphthylamine. In the lubricating oil composition, one type may be used alone, or two or more types may be used in combination. For example, alkylated diphenylamine and alkylated naphthylamine, which are aromatic amine antioxidants, may be contained in combination.
アルキル化ジフェニルアミンとしては、オクチル化ジフェニルアミン、ブチル化ジフェニルアミン等が挙げられる。例えば、オクチル化ジフェニルアミンとしては、ｐ，ｐ’－ジオクチルジフェニルアミン等が挙げられる。また、オクチル、ブチル混合化ジフェニルアミンを使用することもできる。 Examples of the alkylated diphenylamine include octylated diphenylamine and butylated diphenylamine. For example, octylated diphenylamine includes p,p'-dioctyldiphenylamine. It is also possible to use octyl and butyl mixed diphenylamine.
アルキル化ナフチルアミンとしては、例えば、Ｎ－フェニル－１，１，３，３－テトラメチルブチルナフタレン－１－アミン、フェニル－１－ナフチルアミン等が挙げられる。 Examples of the alkylated naphthylamine include N-phenyl-1,1,3,3-tetramethylbutylnaphthalen-1-amine and phenyl-1-naphthylamine.
（フェノール系酸化防止剤）
フェノール系酸化防止剤としては、種々のものを用いることができる。例えば、ヘキサメチレンビス［３－（３，５－ｄｉ－ｔｅｒｔ－ブチル－４－ヒドロキシフェニル）プロピオネート］、６－メチルヘプチル－３－（３，５－ｄｉ－ｔｅｒｔ－ブチル－４－ヒドロキシフェニル）プロピオナート、２，６－ｄｉ－ｔｅｒｔ－ブチルフェノール、ペンタエリスリトールテトラキス［３－（３’，５’－ｄｉ－ｔｅｒｔ－ブチル－４’－ヒドロキシフェニル）プロピオナート］等を用いることができる。
(phenolic antioxidant)
Various phenolic antioxidants can be used. For example, hexamethylene bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], 6-methylheptyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl) Propionate, 2,6-di-tert-butylphenol, pentaerythritol tetrakis [3-(3',5'-di-tert-butyl-4'-hydroxyphenyl)propionate], and the like can be used.
（チオフェノール系酸化防止剤）
チオフェノール系酸化防止剤としては、種々のものを用いることができる。例えば、チオジエチレンビス［３－（３，５－ｄｉ－ｔｅｒｔ－ブチル－４－ヒドロキシフェニル）プロピオネート］等が挙げられる。
(Thiophenol antioxidant)
Various thiophenol antioxidants can be used. For example, thiodiethylene bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] and the like can be mentioned.
［その他の添加剤］
なお、上述した成分のほかに、その目的に応じて、各種の添加剤をさらに配合させることができる。例えば、二硫化モリブデン等の固体潤滑剤、粘度指数向上剤、流動点降下剤、腐食防止剤、防錆剤、油性剤等を添加することができる。これら各種の添加剤の含有量は、それぞれ要求される性能に応じて任意に定めることができるが、上述した構成成分の性能を損なわない範囲とする。
[Other additives]
In addition to the above-mentioned components, various additives may be further added depending on the purpose. For example, solid lubricants such as molybdenum disulfide, viscosity index improvers, pour point depressants, corrosion inhibitors, rust preventives, oily agents, etc. can be added. The content of these various additives can be arbitrarily determined depending on the required performance, but is within a range that does not impair the performance of the above-mentioned constituent components.
［潤滑油組成物の動粘度］
本実施の形態に係る潤滑油組成物の動粘度は、特に限定されず、広範な範囲の動粘度を取り得て、有効に作用し得る。
[Kinematic viscosity of lubricating oil composition]
The kinematic viscosity of the lubricating oil composition according to the present embodiment is not particularly limited, and can have a wide range of kinematic viscosity and can function effectively.
≪２．潤滑油組成物の製造方法≫
本実施の形態に係る潤滑油組成物は、一般的な潤滑油剤組成物の製造方法と同様にして製造することができる。
≪2. Method for producing lubricating oil composition≫
The lubricating oil composition according to this embodiment can be manufactured in the same manner as the manufacturing method of general lubricating oil compositions.
具体的には、例えば、鉱物油からなる基油中に、上述した各添加剤成分を所定量添加配合させて撹拌混合する。撹拌に際しては、公知の撹拌機等を用いることができる。 Specifically, for example, a predetermined amount of each of the additive components described above is added and blended into a base oil made of mineral oil, and the mixture is stirred and mixed. For stirring, a known stirrer or the like can be used.
以下、本発明の実施例を示してより詳細に説明するが、本発明はこれらの実施例に何ら限定されるものではない。 EXAMPLES Hereinafter, the present invention will be described in more detail by showing examples, but the present invention is not limited to these examples at all.
≪潤滑油組成物の製造≫
実施例、比較例において、下記表１に示す組成となるように潤滑油組成物を製造し、その潤滑油組成物についてＳＲＶ試験を行い、低摩擦性、耐摩耗性の評価を行った。
≪Manufacture of lubricating oil composition≫
In Examples and Comparative Examples, lubricating oil compositions were manufactured to have the compositions shown in Table 1 below, and the lubricating oil compositions were subjected to SRV tests to evaluate low friction properties and wear resistance.
具体的には、下記表１に示す各成分原料（単位：質量％）を秤量してスリーワンモーターで混合した。潤滑油組成物の成分原料はそれぞれ以下のものを用いた。 Specifically, each component raw material (unit: mass %) shown in Table 1 below was weighed and mixed using a three-one motor. The following ingredients were used for the lubricating oil composition.
［基油］
・鉱物油Ａ：商品名スーパーオイルＢ１００（ＥＮＥＯＳ社製）
・鉱物油Ｂ：商品名スーパーオイルＢ４６０（ＥＮＥＯＳ社製）
［摩擦調整剤］
・ＭｏＤＴＰ－Ａ：商品名アデカサクラルーブ３１０Ｇ（ＡＤＥＫＡ社製）
・ＭｏＤＴＰ－Ｂ：商品名アデカサクラルーブ３００（ＡＤＥＫＡ社製）
・ＭｏＤＴＰ－Ｃ：商品名ＭＯＬＹＶＡＮ Ｌ（バンダービルト社製）
・ＭｏＤＴＰ－Ｄ：商品名ＡＤＤＩＴＩＮ ＲＣ３５８０（ランクセス製）
［極圧剤］
・リン酸エステルＡ：商品名ＴＣＰ（大八化学社製）
・リン酸エステルＢ：商品名レオフォス５０(味の素ファインテクノ製)
・リン酸エステルＣ：商品名レオフォス６５(味の素ファインテクノ製)
・リン酸エステルＤ：商品名レオフォス９５(味の素ファインテクノ製)
・チアジアゾール：商品名ＨｉＴＥＣ４３１３（アフトン社製）
［摩耗防止剤］
・プライマリータイプＺｎＤＴＰ：
商品名ＡＤＤＩＴＩＮ ＲＣ３０４８（ランクセス社製）
・セカンダリータイプＺｎＤＴＰ：商品名ＨｉＴＥＣ７１６９（アフトン社製）
・メチレンビスジチオカーバメート：ＶＡＮＬＵＢＥ７７２３（バンダービルト社製）
［分散剤］
・ビスタイプコハク酸イミド：商品名ＯＬＯＡ５０８０（シェブロン社製）
・ホウ素化コハク酸イミド：商品名ＬＵＢＲＩＺＯＬ９３５（ルーブリゾール社製）
［酸化防止剤］
・アミン系酸化防止剤：商品名ＩＲＧＡＮＯＸ Ｌ５７（ＢＡＳＦ社製）
・フェノール系酸化防止剤：商品名ＩＲＧＡＮＯＸ Ｌ１３５（ＢＡＳＦ社製）
[Base oil]
・Mineral oil A: Product name Super Oil B100 (manufactured by ENEOS)
・Mineral oil B: Product name Super Oil B460 (manufactured by ENEOS)
[Friction modifier]
・MoDTP-A: Product name ADEKA Sakura Lube 310G (manufactured by ADEKA)
・MoDTP-B: Product name ADEKA Sakura Lube 300 (manufactured by ADEKA)
・MoDTP-C: Product name MOLYVAN L (manufactured by Vanderbilt)
・MoDTP-D: Product name ADDITIN RC3580 (manufactured by LANXESS)
[Extreme pressure agent]
・Phosphate ester A: Trade name TCP (manufactured by Daihachi Kagaku Co., Ltd.)
・Phosphate ester B: Product name Rheophos 50 (manufactured by Ajinomoto Fine Techno)
・Phosphate ester C: Product name Rheophos 65 (manufactured by Ajinomoto Fine Techno)
・Phosphate ester D: Product name Rheophos 95 (manufactured by Ajinomoto Fine Techno)
・Thiadiazole: Product name HiTEC4313 (manufactured by Afton)
[Anti-wear agent]
・Primary type ZnDTP:
Product name ADDITIN RC3048 (manufactured by LANXESS)
・Secondary type ZnDTP: Product name HiTEC7169 (manufactured by Afton)
・Methylene bisdithiocarbamate: VANLUBE7723 (manufactured by Vanderbilt)
[Dispersant]
・Bis-type succinimide: Product name OLOA5080 (manufactured by Chevron)
・Boronated succinimide: Product name LUBRIZOL935 (manufactured by Lubrizol)
[Antioxidant]
・Amine antioxidant: Product name IRGANOX L57 (manufactured by BASF)
・Phenolic antioxidant: Product name IRGANOX L135 (manufactured by BASF)
≪低摩擦性、耐摩耗性の評価≫
上述したように、実施例、比較例の潤滑油組成物について以下の条件でＳＲＶ試験を行い、低摩擦性、耐摩耗性の評価を行った。
［ＳＲＶ試験条件］
テストピース：上部 Φ１５×２２ｍｍシリンダ（材質ＳＵＪ－２相当）
下部 Φ２４×７．８５ｍｍディスク（材質ＳＵＪ－２相当）
荷重：４００Ｎ
振動数：５０Ｈｚ
振幅：１．５ｍｍ
温度：４０℃、６０℃、８０℃、１００℃、１２０℃
時間：各温度で５分
摩擦係数：各温度で５分後の安定した値
≪Evaluation of low friction and wear resistance≫
As described above, the lubricating oil compositions of Examples and Comparative Examples were subjected to SRV tests under the following conditions to evaluate low friction properties and wear resistance.
[SRV test conditions]
Test piece: Upper Φ15 x 22mm cylinder (material SUJ-2 equivalent)
Lower part Φ24 x 7.85mm disc (material equivalent to SUJ-2)
Load: 400N
Frequency: 50Hz
Amplitude: 1.5mm
Temperature: 40℃, 60℃, 80℃, 100℃, 120℃
Time: 5 minutes at each temperature Friction coefficient: Stable value after 5 minutes at each temperature
≪結果≫
下記表１に、実施例、比較例の潤滑油組成物の組成と、評価結果を示す。また、図１は、実施例１２、比較例５及び６の潤滑油組成物のＳＲＶ試験結果のグラフ図であり、横軸が温度（℃）、縦軸が摩擦係数を示す。
≪Results≫
Table 1 below shows the compositions and evaluation results of the lubricating oil compositions of Examples and Comparative Examples. Moreover, FIG. 1 is a graph of the SRV test results of the lubricating oil compositions of Example 12 and Comparative Examples 5 and 6, where the horizontal axis shows the temperature (° C.) and the vertical axis shows the coefficient of friction.
上記表１及び図１に示した、実施例、比較例の結果から、実施例の潤滑油組成物のように、鉱物油を含む基油と、モリブデンジチオフォスフェートを含む摩擦調整剤と、リン酸エステルと、チアジアゾールとを含む極圧剤と、ジンクチオフォスフェートを含む摩耗防止剤と、コハク酸イミドを含む分散剤と、カルシウム系清浄剤と、を含有する潤滑油組成物であることにより、ＳＲＶ試験の評価において４０℃～１２０℃の広い温度領域に亘って低摩擦性、耐摩耗性を発揮することがわかった。
From the results of Examples and Comparative Examples shown in Table 1 and FIG. By being a lubricating oil composition containing an extreme pressure agent containing an ester and thiadiazole, an antiwear agent containing zinc thiophosphate, a dispersing agent containing succinimide, and a calcium-based detergent, SRV Test evaluation revealed that it exhibits low friction and wear resistance over a wide temperature range of 40°C to 120°C.
Claims (7)
モリブデンジチオフォスフェート（ＭｏＤＴＰ）を含む摩擦調整剤と、
トリクレジルフォスフェートを含むリン酸エステルと、チアジアゾールとを含む極圧剤と、
ジンクチオフォスフェート（ＺｎＤＴＰ）を含む摩耗防止剤と、
コハク酸イミドを含む分散剤と、
カルシウム系清浄剤と、を含有する、
潤滑油組成物（ただし、脂肪族スルホン酸、芳香族スルホン酸、芳香族カルボン酸、及び脂肪族炭化水素置換フェノール化合物から選ばれる有機酸を含有するものを除く。）。 base oil containing mineral oil;
a friction modifier containing molybdenum dithiophosphate (MoDTP);
an extreme pressure agent containing a phosphate ester containing tricresyl phosphate and thiadiazole;
an anti-wear agent containing zinc thiophosphate (ZnDTP);
a dispersant containing succinimide;
containing a calcium-based cleaning agent;
Lubricating oil compositions (excluding those containing organic acids selected from aliphatic sulfonic acids, aromatic sulfonic acids, aromatic carboxylic acids, and aliphatic hydrocarbon-substituted phenolic compounds).
請求項１に記載の潤滑油組成物。 Furthermore, containing an amine antioxidant and/or a phenolic antioxidant,
The lubricating oil composition according to claim 1.
請求項１に記載の潤滑油組成物。 The content of the MoDTP is in the range of 1.0% by mass or more and 5.0% by mass or less based on 100% by mass of the composition.
The lubricating oil composition according to claim 1.
請求項１に記載の潤滑油組成物。 The total content of the phosphoric acid ester and the thiadiazole is in the range of 0.5% by mass or more and 5.0% by mass or less based on 100% by mass of the composition.
The lubricating oil composition according to claim 1.
請求項１に記載の潤滑油組成物。 The content of the ZnDTP is in the range of 1.0% by mass or more and 5.0% by mass or less based on 100% by mass of the composition.
The lubricating oil composition according to claim 1.
請求項１に記載の潤滑油組成物。 The content of the succinimide is in the range of 0.1% by mass or more and 3.0% by mass or less based on 100% by mass of the composition.
The lubricating oil composition according to claim 1.
請求項１に記載の潤滑油組成物。 The content of the calcium-based detergent is in the range of 0.1% by mass or more and 1.0% by mass or less based on 100% by mass of the composition.
The lubricating oil composition according to claim 1.
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| JP2000273480A (en) | 1999-03-29 | 2000-10-03 | Asahi Denka Kogyo Kk | Lubricating composition |
| JP2004002796A (en) | 2002-04-08 | 2004-01-08 | Toyota Central Res & Dev Lab Inc | Lubricating oil additive composition for automatic transmission and lubricating oil composition for automatic transmission |
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| JP2000273480A (en) | 1999-03-29 | 2000-10-03 | Asahi Denka Kogyo Kk | Lubricating composition |
| JP2004002796A (en) | 2002-04-08 | 2004-01-08 | Toyota Central Res & Dev Lab Inc | Lubricating oil additive composition for automatic transmission and lubricating oil composition for automatic transmission |
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