WO2023234295A1 - Lubricating oil composition - Google Patents
Lubricating oil composition Download PDFInfo
- Publication number
- WO2023234295A1 WO2023234295A1 PCT/JP2023/020101 JP2023020101W WO2023234295A1 WO 2023234295 A1 WO2023234295 A1 WO 2023234295A1 JP 2023020101 W JP2023020101 W JP 2023020101W WO 2023234295 A1 WO2023234295 A1 WO 2023234295A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mass
- lubricating oil
- oil composition
- less
- component
- Prior art date
Links
- 239000010687 lubricating oil Substances 0.000 title claims abstract description 175
- 239000000203 mixture Substances 0.000 title claims abstract description 172
- 239000002199 base oil Substances 0.000 claims abstract description 32
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 31
- 229910052751 metal Inorganic materials 0.000 claims abstract description 26
- 239000002184 metal Substances 0.000 claims abstract description 26
- 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 claims abstract description 17
- 239000003599 detergent Substances 0.000 claims abstract description 14
- 238000002485 combustion reaction Methods 0.000 claims description 32
- 239000003921 oil Substances 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 20
- 230000001050 lubricating effect Effects 0.000 claims description 12
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical group [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 10
- 125000004429 atom Chemical group 0.000 claims description 9
- 239000000314 lubricant Substances 0.000 claims description 3
- 239000000446 fuel Substances 0.000 description 36
- 239000002585 base Substances 0.000 description 21
- 239000011575 calcium Substances 0.000 description 20
- -1 polyol esters Chemical class 0.000 description 19
- 230000003749 cleanliness Effects 0.000 description 16
- 229920000193 polymethacrylate Polymers 0.000 description 14
- 239000003795 chemical substances by application Substances 0.000 description 13
- 238000012360 testing method Methods 0.000 description 13
- 239000002518 antifoaming agent Substances 0.000 description 11
- 239000000654 additive Substances 0.000 description 10
- 229920000642 polymer Polymers 0.000 description 9
- 239000003963 antioxidant agent Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 235000014113 dietary fatty acids Nutrition 0.000 description 7
- 239000000194 fatty acid Substances 0.000 description 7
- 229930195729 fatty acid Natural products 0.000 description 7
- 239000007789 gas Substances 0.000 description 7
- 239000003607 modifier Substances 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910052791 calcium Inorganic materials 0.000 description 6
- 239000002270 dispersing agent Substances 0.000 description 6
- 239000006078 metal deactivator Substances 0.000 description 6
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 6
- 239000005077 polysulfide Substances 0.000 description 6
- 229920001021 polysulfide Polymers 0.000 description 6
- 150000008117 polysulfides Polymers 0.000 description 6
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 6
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 5
- 239000002253 acid Substances 0.000 description 5
- 229920001577 copolymer Polymers 0.000 description 5
- 230000000994 depressogenic effect Effects 0.000 description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 230000007935 neutral effect Effects 0.000 description 5
- 239000008186 active pharmaceutical agent Substances 0.000 description 4
- 230000003078 antioxidant effect Effects 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 4
- 150000004665 fatty acids Chemical class 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 239000004711 α-olefin Substances 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- 125000003342 alkenyl group Chemical group 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000003112 inhibitor Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002480 mineral oil Substances 0.000 description 3
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 description 3
- 229960001860 salicylate Drugs 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-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
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 239000012459 cleaning agent Substances 0.000 description 2
- 125000000753 cycloalkyl group Chemical group 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical class [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 2
- 150000002430 hydrocarbons Chemical group 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 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
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- YCWSUKQGVSGXJO-NTUHNPAUSA-N nifuroxazide Chemical group C1=CC(O)=CC=C1C(=O)N\N=C\C1=CC=C([N+]([O-])=O)O1 YCWSUKQGVSGXJO-NTUHNPAUSA-N 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 239000003209 petroleum derivative Substances 0.000 description 2
- 150000003014 phosphoric acid esters Chemical class 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 238000003918 potentiometric titration Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 150000003464 sulfur compounds Chemical class 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 150000003580 thiophosphoric acid esters Chemical class 0.000 description 2
- WMYJOZQKDZZHAC-UHFFFAOYSA-H trizinc;dioxido-sulfanylidene-sulfido-$l^{5}-phosphane Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S WMYJOZQKDZZHAC-UHFFFAOYSA-H 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- MBBWTVUFIXOUBE-UHFFFAOYSA-L zinc;dicarbamodithioate Chemical compound [Zn+2].NC([S-])=S.NC([S-])=S MBBWTVUFIXOUBE-UHFFFAOYSA-L 0.000 description 2
- YHMYGUUIMTVXNW-UHFFFAOYSA-N 1,3-dihydrobenzimidazole-2-thione Chemical compound C1=CC=C2NC(S)=NC2=C1 YHMYGUUIMTVXNW-UHFFFAOYSA-N 0.000 description 1
- IHWDIGHWDQPQMQ-UHFFFAOYSA-N 1-octadecylsulfanyloctadecane Chemical compound CCCCCCCCCCCCCCCCCCSCCCCCCCCCCCCCCCCCC IHWDIGHWDQPQMQ-UHFFFAOYSA-N 0.000 description 1
- WJFKNYWRSNBZNX-UHFFFAOYSA-N 10H-phenothiazine Chemical compound C1=CC=C2NC3=CC=CC=C3SC2=C1 WJFKNYWRSNBZNX-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
- MDWVSAYEQPLWMX-UHFFFAOYSA-N 4,4'-Methylenebis(2,6-di-tert-butylphenol) Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 MDWVSAYEQPLWMX-UHFFFAOYSA-N 0.000 description 1
- NBPOOCGXISZKSX-UHFFFAOYSA-N 6-methylheptyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)CCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NBPOOCGXISZKSX-UHFFFAOYSA-N 0.000 description 1
- GHKOFFNLGXMVNJ-UHFFFAOYSA-N Didodecyl thiobispropanoate Chemical compound CCCCCCCCCCCCOC(=O)CCSCCC(=O)OCCCCCCCCCCCC GHKOFFNLGXMVNJ-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Chemical class 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
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Natural products C=CC1=CC=CC=C1 PPBRXRYQALVLMV-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
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 150000001298 alcohols Chemical class 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
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 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
- 125000002947 alkylene group Chemical group 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- 125000003118 aryl 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
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- 125000003354 benzotriazolyl group Chemical class N1N=NC2=C1C=CC=C2* 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 150000001639 boron compounds Chemical class 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
- 150000001721 carbon Chemical group 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000004517 catalytic hydrocracking Methods 0.000 description 1
- 150000005676 cyclic carbonates Chemical class 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical class C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010696 ester oil Substances 0.000 description 1
- 150000002191 fatty alcohols Chemical class 0.000 description 1
- 238000005227 gel permeation chromatography Methods 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 239000005078 molybdenum compound Substances 0.000 description 1
- 150000002752 molybdenum compounds Chemical class 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000002530 phenolic antioxidant Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 229950000688 phenothiazine Drugs 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 150000008301 phosphite esters Chemical class 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
- 229920013639 polyalphaolefin Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920000056 polyoxyethylene ether Polymers 0.000 description 1
- 229920013636 polyphenyl ether polymer Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 150000003873 salicylate salts Chemical class 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
- 239000007787 solid Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 229940042055 systemic antimycotics triazole derivative Drugs 0.000 description 1
- 150000004867 thiadiazoles Chemical class 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 150000003672 ureas Chemical class 0.000 description 1
- 150000003752 zinc compounds Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M159/00—Lubricating compositions characterised by the additive being of unknown or incompletely defined constitution
- C10M159/12—Reaction products
- C10M159/20—Reaction mixtures having an excess of neutralising base, e.g. so-called overbasic or highly basic products
- C10M159/22—Reaction mixtures having an excess of neutralising base, e.g. so-called overbasic or highly basic products containing phenol radicals
-
- 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
Definitions
- the lubricating oil composition of a preferred embodiment of the present invention is excellent in the suppressing effect of deposit generation, cleanliness and stability, and fuel efficiency, regardless of the usage environment. Therefore, the lubricating oil composition of one embodiment of the present invention can be suitably used, for example, for lubricating an internal combustion engine.
- the numerical range from the lower limit value to the upper limit value can be defined by appropriately selecting from each option and combining them arbitrarily.
- the description "60 to 100” means a range of "60 or more (60 or more than 60) and 100 or less (100 or less than 100)". do.
- a plurality of the various requirements described as preferred embodiments described herein can be combined.
- it is 18.0% by mass or more, particularly preferably 19.0% by mass or more, and from the viewpoint of providing a lubricating oil composition with good fuel economy, preferably 40.0% by mass or less, more Preferably 37.0% by mass or less, more preferably 35.0% by mass or less, more preferably 33.0% by mass or less, even more preferably 30.0% by mass or less, even more preferably 27.0% by mass or less, and more It is more preferably 25.0% by mass or less, particularly preferably 23.0% by mass or less.
- the content ratio of the medium fraction (Mf) having 22 to 31 carbon atoms in the component (A) used in one aspect of the present invention is preferably 35.0% based on the total amount (100% by mass) of the component (A). % by mass or more, more preferably 40.0% by mass or more, more preferably 45.0% by mass or more, still more preferably 50.0% by mass or more, still more preferably 55.0% by mass or more, even more preferably 60.0% by mass or more. 0% by mass or more, particularly preferably 65.0% by mass or more, and preferably 85% by mass or less, more preferably 83.5% by mass or less, more preferably 81.0% by mass or less, even more preferably 80% by mass or less. 0% by mass or less, more preferably 79.0% by mass or less, even more preferably 78.0% by mass or less, particularly preferably 77.0% by mass or less.
- the ratio and the content ratio of medium fraction (Mf) having 22 or more carbon atoms and 31 or more carbon atoms mean values measured according to the method described in Examples.
- base number refers to perchlorine based on "9. Potentiometric titration method (base number/perchloric acid method)" of JIS K2501 "Petroleum products and lubricating oils - Neutralization number test method”. Means the value measured by the acid method.
- calcium is added as component (B1).
- the content in terms of atoms is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, and more preferably 0.07% by mass, based on the total amount (100% by mass) of the lubricating oil composition.
- the content of calcium atoms (Ca) means a value measured in accordance with JPI-5S-38-92.
- 50% by mass or more more preferably 1.00% by mass or more, even more preferably 1.50% by mass or more, even more preferably 1.70% by mass or more, particularly preferably 2,00% by mass or more, and 8.00% by mass or less, 7.00% by mass or less, 6.00% by mass or less, 5.00% by mass or less, 4.00% by mass or less, 3.70% by mass or less, 3.50% by mass or less, 3 It may be .20% by mass or less, 3.00% by mass or less, 2.70% by mass or less, or 2.50% by mass or less.
- Component (C) used in one embodiment of the present invention includes, for example, non-dispersed polymethacrylate, dispersed polymethacrylate, olefin copolymer (e.g., ethylene-propylene copolymer, etc.), dispersed olefin copolymer, etc.
- olefin copolymer e.g., ethylene-propylene copolymer, etc.
- dispersed olefin copolymer e.g., ethylene-propylene copolymer, etc.
- examples include polymers such as polymers, styrene copolymers (eg, styrene-diene copolymers, styrene-isoprene copolymers, etc.).
- the lubricating oil composition of one aspect of the present invention may further contain a pour point depressant.
- the pour point depressants may be used alone or in combination of two or more.
- Examples of pour point depressants used in one embodiment of the present invention include ethylene-vinyl acetate copolymers, condensates of chlorinated paraffins and naphthalene, condensates of chlorinated paraffins and phenols, polymethacrylates, and polyalkylstyrenes. etc.
- the lubricating oil composition of one embodiment of the present invention may further contain a rust inhibitor.
- the rust inhibitors may be used alone or in combination of two or more.
- Examples of the rust preventive agent used in one embodiment of the present invention include fatty acids, alkenyl succinic acid half esters, fatty acid soaps, alkyl sulfonates, polyhydric alcohol fatty acid esters, fatty acid amines, oxidized paraffins, alkyl polyoxyethylene ethers, and the like. Can be mentioned.
- the kinematic viscosity at 100°C of the lubricating oil composition is a lubricating oil with better fuel efficiency.
- it is preferably 10.0 mm 2 /s or less, more preferably 9.8 mm 2 /s or less, and preferably 6.0 mm 2 /s or more, more preferably 7.0 mm 2 / s. s or more, more preferably 8.0 mm 2 /s or more, even more preferably 9.0 mm 2 /s or more.
- the residual oil percentage of the lubricating oil composition of one embodiment of the present invention is good even when used in a high temperature environment and/or a high pressure environment. From the viewpoint of providing a lubricating oil composition that maintains good fluidity and is highly effective in suppressing deposit generation, preferably 25.0% by mass or more, more preferably 26.0% by mass or more, and even more preferably 27.0% by mass. The content is more preferably 28.0% by mass or more.
- the lubricating oil composition of one embodiment of the present invention has a rating of preferably 7.0 or higher, more preferably 7.5 or higher, and even Preferably it is 8.0 or more, and even more preferably 8.5 or more.
- the specific procedure and conditions for the hot tube test described above are the same as those described in Examples below.
- the lubricating oil composition of one embodiment of the present invention is excellent in suppressing deposit generation, cleanliness and stability, and fuel efficiency, regardless of the usage environment. Therefore, the lubricating oil composition of one embodiment of the present invention can be suitably used, for example, for lubricating an internal combustion engine. Therefore, the lubricating oil composition of one embodiment of the present invention can be applied to various devices that can exhibit the above characteristics, and can be suitably used for lubrication between various parts in an internal combustion engine.
- the present invention can be suitably used for lubricating various parts in diesel engines in particular. Further, it can be suitably used for lubrication between various parts in a supercharger equipped with an EGR system that re-inhales and recirculates a portion of exhaust gas.
- Hot tube test A hot tube test was conducted in accordance with JPI-5S-55-99. Specifically, while maintaining the temperature of the glass tube at 290° C., 0.3 mL/hour of the lubricating oil composition prepared in Examples and Comparative Examples and air were introduced into a glass tube with an inner diameter of 2 mm. A hot tube test was conducted with continuous flow at a rate of 10 mL/min for 16 hours. After the hot tube test, the degree of discoloration inside the glass tube is determined by comparing the lacquer adhered to the glass tube with the color sample, scoring 10 points if it is colorless and transparent, and 0 points if it is black, in 0.5 increments. I gave them a score on a 21-point scale.
Abstract
Provided is a lubricating oil composition comprising a base oil (A) and a metal-based detergent (B), wherein: the content ratio of a heavy component (Hf) having 32 or more carbon atoms in the component (A) is at least 14.0 mass% with respect to the total amount of the component (A); and the component (B) contains an overbased calcium salicylate (B1) having a base number of at least 100 mgKOH/g, and the content ratio of the component (B1) in the component (B) is at least 35.0 mass% with respect to the total amount of the component (B).
Description
本発明は、潤滑油組成物、内燃機関、及び内燃機関の潤滑方法に関する。
The present invention relates to a lubricating oil composition, an internal combustion engine, and a method of lubricating an internal combustion engine.
自動車等に使用される内燃機関には、小型高出力化、省燃費化、排ガス規制対応等、様々な要求がされており、内燃機関に用いる潤滑油組成物に対しても、このような要求に対応し得る開発が行われている。
例えば、特許文献１には、コンプレッサーデポジットの形成を抑制する性能をより向上させた潤滑油組成物を提供することを目的として、沸点５００～５５０℃を有する留分を１４質量％以上、及び沸点が５５０℃を超える留分を５質量％以上含有する潤滑油組成物に関する発明が開示されている。 There are various requirements for internal combustion engines used in automobiles, etc., such as miniaturization, high output, fuel efficiency, compliance with exhaust gas regulations, etc., and these requirements also apply to lubricating oil compositions used in internal combustion engines. Developments are underway to accommodate this.
For example, Patent Document 1 discloses that 14% by mass or more of a fraction having a boiling point of 500 to 550°C and a boiling point An invention relating to a lubricating oil composition containing 5% by mass or more of a fraction having a temperature exceeding 550°C is disclosed.
例えば、特許文献１には、コンプレッサーデポジットの形成を抑制する性能をより向上させた潤滑油組成物を提供することを目的として、沸点５００～５５０℃を有する留分を１４質量％以上、及び沸点が５５０℃を超える留分を５質量％以上含有する潤滑油組成物に関する発明が開示されている。 There are various requirements for internal combustion engines used in automobiles, etc., such as miniaturization, high output, fuel efficiency, compliance with exhaust gas regulations, etc., and these requirements also apply to lubricating oil compositions used in internal combustion engines. Developments are underway to accommodate this.
For example, Patent Document 1 discloses that 14% by mass or more of a fraction having a boiling point of 500 to 550°C and a boiling point An invention relating to a lubricating oil composition containing 5% by mass or more of a fraction having a temperature exceeding 550°C is disclosed.
ところで、環境対応への対策として、排気ガスの一部を再度吸気させ還流させるＥＧＲシステムを備える過給機の開発が進められている。ＥＧＲシステムを備える過給機は、過給圧を上げるとエンジンオイル由来のデポジットが発生しやすくなり、過給機の効率を低下させる要因となる。さらに、自動車等に使用される内燃機関には省燃費性が求められている。
このような状況において、使用環境に依らず、デポジット発生の抑制効果が高く、省燃費性に優れた、内燃機関に好適に使用し得る、潤滑油組成物が求められている。 Incidentally, as an environmental measure, development is underway of superchargers equipped with an EGR system that re-inhales and recirculates a portion of exhaust gas. In a supercharger equipped with an EGR system, when the boost pressure is increased, deposits derived from engine oil are likely to occur, which becomes a factor that reduces the efficiency of the supercharger. Furthermore, fuel efficiency is required for internal combustion engines used in automobiles and the like.
Under these circumstances, there is a need for a lubricating oil composition that is highly effective in suppressing deposit generation and has excellent fuel efficiency, regardless of the usage environment, and can be suitably used in internal combustion engines.
このような状況において、使用環境に依らず、デポジット発生の抑制効果が高く、省燃費性に優れた、内燃機関に好適に使用し得る、潤滑油組成物が求められている。 Incidentally, as an environmental measure, development is underway of superchargers equipped with an EGR system that re-inhales and recirculates a portion of exhaust gas. In a supercharger equipped with an EGR system, when the boost pressure is increased, deposits derived from engine oil are likely to occur, which becomes a factor that reduces the efficiency of the supercharger. Furthermore, fuel efficiency is required for internal combustion engines used in automobiles and the like.
Under these circumstances, there is a need for a lubricating oil composition that is highly effective in suppressing deposit generation and has excellent fuel efficiency, regardless of the usage environment, and can be suitably used in internal combustion engines.
本発明者らは、鋭意検討を重ねた結果、炭素数３２以上の重質分（Ｈｆ）の含有割合を所定の範囲に調整した基油と、所定の塩基価の過塩基性カルシウムサリシレートを所定の割合で含む金属系清浄剤とを用いた潤滑油組成物が、上記課題を解決し得ることを見出した。具体的には、本発明は、以下の態様を開示する。
［１］基油（Ａ）と、金属系清浄剤（Ｂ）を含み、
成分（Ａ）中の炭素数３２以上の重質分（Ｈｆ）の含有割合が、成分（Ａ）の全量基準で、１４．０質量％以上であり、
成分（Ｂ）が、塩基価１００ｍｇＫＯＨ／ｇ以上の過塩基性カルシウムサリシレート（Ｂ１）を含み、
成分（Ｂ）中の成分（Ｂ１）の含有割合が、成分（Ｂ）の全量基準で、３５．０質量％以上である、
潤滑油組成物。
［２］上記［１］に記載の潤滑油組成物を充填した、内燃機関。
［３］上記［１］に記載の潤滑油組成物を、内燃機関の潤滑に適用する、内燃機関の潤滑方法。 As a result of extensive studies, the present inventors have determined that a base oil in which the content of heavy fractions (Hf) having a carbon number of 32 or more is adjusted to a predetermined range, and an overbased calcium salicylate with a predetermined base number are used in a predetermined manner. It has been found that a lubricating oil composition using a metal-based detergent containing a metal detergent in a proportion of can solve the above problems. Specifically, the present invention discloses the following aspects.
[1] Contains base oil (A) and metal detergent (B),
The content of the heavy fraction (Hf) having 32 or more carbon atoms in the component (A) is 14.0% by mass or more based on the total amount of the component (A),
Component (B) contains overbased calcium salicylate (B1) with a base value of 100 mgKOH/g or more,
The content ratio of component (B1) in component (B) is 35.0% by mass or more based on the total amount of component (B),
Lubricating oil composition.
[2] An internal combustion engine filled with the lubricating oil composition according to [1] above.
[3] A method for lubricating an internal combustion engine, in which the lubricating oil composition according to [1] above is applied to lubricate an internal combustion engine.
［１］基油（Ａ）と、金属系清浄剤（Ｂ）を含み、
成分（Ａ）中の炭素数３２以上の重質分（Ｈｆ）の含有割合が、成分（Ａ）の全量基準で、１４．０質量％以上であり、
成分（Ｂ）が、塩基価１００ｍｇＫＯＨ／ｇ以上の過塩基性カルシウムサリシレート（Ｂ１）を含み、
成分（Ｂ）中の成分（Ｂ１）の含有割合が、成分（Ｂ）の全量基準で、３５．０質量％以上である、
潤滑油組成物。
［２］上記［１］に記載の潤滑油組成物を充填した、内燃機関。
［３］上記［１］に記載の潤滑油組成物を、内燃機関の潤滑に適用する、内燃機関の潤滑方法。 As a result of extensive studies, the present inventors have determined that a base oil in which the content of heavy fractions (Hf) having a carbon number of 32 or more is adjusted to a predetermined range, and an overbased calcium salicylate with a predetermined base number are used in a predetermined manner. It has been found that a lubricating oil composition using a metal-based detergent containing a metal detergent in a proportion of can solve the above problems. Specifically, the present invention discloses the following aspects.
[1] Contains base oil (A) and metal detergent (B),
The content of the heavy fraction (Hf) having 32 or more carbon atoms in the component (A) is 14.0% by mass or more based on the total amount of the component (A),
Component (B) contains overbased calcium salicylate (B1) with a base value of 100 mgKOH/g or more,
The content ratio of component (B1) in component (B) is 35.0% by mass or more based on the total amount of component (B),
Lubricating oil composition.
[2] An internal combustion engine filled with the lubricating oil composition according to [1] above.
[3] A method for lubricating an internal combustion engine, in which the lubricating oil composition according to [1] above is applied to lubricate an internal combustion engine.
本発明の好適な一態様の潤滑油組成物は、使用環境に依らず、デポジットの発生の抑制効果、清浄性及び安定性、並びに、省燃費性に優れる。そのため、本発明の一態様の潤滑油組成物は、例えば、内燃機関の潤滑に好適に使用し得る。
The lubricating oil composition of a preferred embodiment of the present invention is excellent in the suppressing effect of deposit generation, cleanliness and stability, and fuel efficiency, regardless of the usage environment. Therefore, the lubricating oil composition of one embodiment of the present invention can be suitably used, for example, for lubricating an internal combustion engine.
本明細書に記載された数値範囲については、上限値及び下限値を任意に組み合わせることができる。例えば、数値範囲として「好ましくは３０～１００、より好ましくは４０～８０」と記載されている場合、「３０～８０」との範囲や「４０～１００」との範囲も、本明細書に記載された数値範囲に含まれる。
また、例えば、数値範囲として「好ましくは３０以上、より好ましくは４０以上であり、また、好ましくは１００以下、より好ましくは８０以下である」と記載されている場合、「３０～８０」との範囲や「４０～１００」との範囲も、本明細書に記載された数値範囲に含まれる。つまり、本明細書に記載された上限値及び下限値の規定において、それぞれの選択肢の中から適宜選択して、任意に組み合わせて、下限値～上限値の数値範囲を規定することができる。
さらに、本明細書に記載された数値範囲として、例えば「６０～１００」との記載は、「６０以上（６０又は６０超）、１００以下（１００又は１００未満）」という範囲であることを意味する。
加えて、本明細書に記載された好ましい態様として記載の各種要件は複数組み合わせることができる。 Regarding the numerical ranges described in this specification, the upper and lower limits can be arbitrarily combined. For example, when a numerical range is described as "preferably 30 to 100, more preferably 40 to 80", the range of "30 to 80" and the range of "40 to 100" are also described in this specification. Included in the specified numerical range.
Also, for example, when the numerical range is described as "preferably 30 or more, more preferably 40 or more, and preferably 100 or less, more preferably 80 or less", "30 to 80" The range and the range "40 to 100" are also included in the numerical ranges described herein. That is, in defining the upper limit value and lower limit value described in this specification, the numerical range from the lower limit value to the upper limit value can be defined by appropriately selecting from each option and combining them arbitrarily.
Furthermore, as a numerical range described in this specification, for example, the description "60 to 100" means a range of "60 or more (60 or more than 60) and 100 or less (100 or less than 100)". do.
In addition, a plurality of the various requirements described as preferred embodiments described herein can be combined.
また、例えば、数値範囲として「好ましくは３０以上、より好ましくは４０以上であり、また、好ましくは１００以下、より好ましくは８０以下である」と記載されている場合、「３０～８０」との範囲や「４０～１００」との範囲も、本明細書に記載された数値範囲に含まれる。つまり、本明細書に記載された上限値及び下限値の規定において、それぞれの選択肢の中から適宜選択して、任意に組み合わせて、下限値～上限値の数値範囲を規定することができる。
さらに、本明細書に記載された数値範囲として、例えば「６０～１００」との記載は、「６０以上（６０又は６０超）、１００以下（１００又は１００未満）」という範囲であることを意味する。
加えて、本明細書に記載された好ましい態様として記載の各種要件は複数組み合わせることができる。 Regarding the numerical ranges described in this specification, the upper and lower limits can be arbitrarily combined. For example, when a numerical range is described as "preferably 30 to 100, more preferably 40 to 80", the range of "30 to 80" and the range of "40 to 100" are also described in this specification. Included in the specified numerical range.
Also, for example, when the numerical range is described as "preferably 30 or more, more preferably 40 or more, and preferably 100 or less, more preferably 80 or less", "30 to 80" The range and the range "40 to 100" are also included in the numerical ranges described herein. That is, in defining the upper limit value and lower limit value described in this specification, the numerical range from the lower limit value to the upper limit value can be defined by appropriately selecting from each option and combining them arbitrarily.
Furthermore, as a numerical range described in this specification, for example, the description "60 to 100" means a range of "60 or more (60 or more than 60) and 100 or less (100 or less than 100)". do.
In addition, a plurality of the various requirements described as preferred embodiments described herein can be combined.
〔潤滑油組成物の構成〕
本発明の一態様の潤滑油組成物は、特定の基油（Ａ）及び特定の金属系清浄剤（Ｂ）を含むが、本発明の効果を損なわない範囲で、さらに他の成分を含有してもよい。
例えば、粘度の温度依存性を小さく、省燃費性が良好な潤滑油組成物とする観点から、本発明の一態様の潤滑油組成物は、さらに、粘度指数向上剤（Ｃ）を含有してもよい。 [Composition of lubricating oil composition]
The lubricating oil composition of one embodiment of the present invention contains a specific base oil (A) and a specific metal detergent (B), but may further contain other components as long as the effects of the present invention are not impaired. It's okay.
For example, from the viewpoint of providing a lubricating oil composition with low temperature dependence of viscosity and good fuel efficiency, the lubricating oil composition of one embodiment of the present invention further contains a viscosity index improver (C). Good too.
本発明の一態様の潤滑油組成物は、特定の基油（Ａ）及び特定の金属系清浄剤（Ｂ）を含むが、本発明の効果を損なわない範囲で、さらに他の成分を含有してもよい。
例えば、粘度の温度依存性を小さく、省燃費性が良好な潤滑油組成物とする観点から、本発明の一態様の潤滑油組成物は、さらに、粘度指数向上剤（Ｃ）を含有してもよい。 [Composition of lubricating oil composition]
The lubricating oil composition of one embodiment of the present invention contains a specific base oil (A) and a specific metal detergent (B), but may further contain other components as long as the effects of the present invention are not impaired. It's okay.
For example, from the viewpoint of providing a lubricating oil composition with low temperature dependence of viscosity and good fuel efficiency, the lubricating oil composition of one embodiment of the present invention further contains a viscosity index improver (C). Good too.
本発明の一態様の潤滑油組成物において、成分（Ａ）及び（Ｂ）の合計含有量は、当該潤滑油組成物の全量（１００質量％）基準で、好ましくは５０質量％以上、より好ましくは６０質量％以上、より好ましくは６５質量％以上、更に好ましくは７０質量％以上、更に好ましくは７５質量％以上、より更に好ましくは８０質量％以上、特に好ましくは８３質量％以上であり、また、１００質量％以下、９９．９質量％以下、９９．０質量％以下、９７．０質量％以下、９５．０質量％以下、９２．０質量％以下、又は９０．０質量％以下としてもよい。
In the lubricating oil composition of one aspect of the present invention, the total content of components (A) and (B) is preferably 50% by mass or more, more preferably is 60% by mass or more, more preferably 65% by mass or more, still more preferably 70% by mass or more, even more preferably 75% by mass or more, even more preferably 80% by mass or more, particularly preferably 83% by mass or more, and , 100% by mass or less, 99.9% by mass or less, 99.0% by mass or less, 97.0% by mass or less, 95.0% by mass or less, 92.0% by mass or less, or 90.0% by mass or less good.
本発明の一態様の潤滑油組成物において、成分（Ａ）、（Ｂ）及び（Ｃ）の合計含有量は、当該潤滑油組成物の全量（１００質量％）基準で、好ましくは５５質量％以上、より好ましくは６０質量％以上、より好ましくは６５質量％以上、更に好ましくは７０質量％以上、更に好ましくは７５質量％以上、より更に好ましくは８０質量％以上、特に好ましくは８５質量％以上であり、また、１００質量％以下、９９．９質量％以下、９９．０質量％以下、９７．０質量％以下、９５．０質量％以下、９２．０質量％以下、又は９０．０質量％以下としてもよい。
In the lubricating oil composition of one aspect of the present invention, the total content of components (A), (B), and (C) is preferably 55% by mass based on the total amount (100% by mass) of the lubricating oil composition. More preferably 60% by mass or more, more preferably 65% by mass or more, still more preferably 70% by mass or more, even more preferably 75% by mass or more, even more preferably 80% by mass or more, particularly preferably 85% by mass or more and 100% by mass or less, 99.9% by mass or less, 99.0% by mass or less, 97.0% by mass or less, 95.0% by mass or less, 92.0% by mass or less, or 90.0% by mass It may be less than %.
以下、本発明の一態様の潤滑油組成物に含まれる各成分の詳細について説明する。
Hereinafter, details of each component contained in the lubricating oil composition of one embodiment of the present invention will be explained.
＜成分（Ａ）：基油＞
本発明の一態様の潤滑油組成物において、成分（Ａ）として用いる基油は、鉱油及び合成油から選ばれる１種以上が挙げられる。
鉱油としては、例えば、パラフィン基系原油、中間基系原油、ナフテン基系原油等の原油を常圧蒸留して得られる常圧残油；これらの常圧残油を減圧蒸留して得られる留出油；当該留出油を、溶剤脱れき、溶剤抽出、水素化分解、溶剤脱ろう、接触脱ろう、及び水素化精製等の精製処理を１つ以上施して得られる精製油；等が挙げられる。 <Component (A): Base oil>
In the lubricating oil composition of one embodiment of the present invention, the base oil used as component (A) may be one or more selected from mineral oils and synthetic oils.
Mineral oils include, for example, atmospheric residual oils obtained by atmospheric distillation of crude oils such as paraffinic crude oil, intermediate crude oil, and naphthenic crude oil; Extracted oil; Refined oil obtained by subjecting the distillate to one or more refining treatments such as solvent deasphalting, solvent extraction, hydrocracking, solvent dewaxing, catalytic dewaxing, and hydrorefining; It will be done.
本発明の一態様の潤滑油組成物において、成分（Ａ）として用いる基油は、鉱油及び合成油から選ばれる１種以上が挙げられる。
鉱油としては、例えば、パラフィン基系原油、中間基系原油、ナフテン基系原油等の原油を常圧蒸留して得られる常圧残油；これらの常圧残油を減圧蒸留して得られる留出油；当該留出油を、溶剤脱れき、溶剤抽出、水素化分解、溶剤脱ろう、接触脱ろう、及び水素化精製等の精製処理を１つ以上施して得られる精製油；等が挙げられる。 <Component (A): Base oil>
In the lubricating oil composition of one embodiment of the present invention, the base oil used as component (A) may be one or more selected from mineral oils and synthetic oils.
Mineral oils include, for example, atmospheric residual oils obtained by atmospheric distillation of crude oils such as paraffinic crude oil, intermediate crude oil, and naphthenic crude oil; Extracted oil; Refined oil obtained by subjecting the distillate to one or more refining treatments such as solvent deasphalting, solvent extraction, hydrocracking, solvent dewaxing, catalytic dewaxing, and hydrorefining; It will be done.
合成油としては、例えば、α－オレフィン単独重合体、α－オレフィン共重合体（例えば、エチレン－α－オレフィン共重合体等の炭素数８～１４のα－オレフィン共重合体）等のポリα－オレフィン；イソパラフィン；ポリアルキレングリコール；ポリオールエステル、二塩基酸エステル、リン酸エステル等のエステル系油；ポリフェニルエーテル等のエーテル系油；アルキルベンゼン；アルキルナフタレン；天然ガスからフィッシャー・トロプシュ法等により製造されるワックス（ＧＴＬワックス（Gas To Liquids WAX））を異性化することで得られる合成油（ＧＴＬ）等が挙げられる。
Examples of synthetic oils include polyα-olefins such as α-olefin homopolymers and α-olefin copolymers (for example, α-olefin copolymers having 8 to 14 carbon atoms such as ethylene-α-olefin copolymers). -Olefins; Isoparaffins; Polyalkylene glycols; Ester oils such as polyol esters, dibasic acid esters, and phosphoric acid esters; Ether oils such as polyphenyl ethers; Alkylbenzenes; Alkylnaphthalenes; Manufactured from natural gas by the Fischer-Tropsch method, etc. Examples include synthetic oil (GTL) obtained by isomerizing wax (GTL wax).
本発明の一態様で用いる基油（Ａ）は、下記要件（Ｉ）を満たす。
・要件（Ｉ）：成分（Ａ）中の炭素数３２以上の重質分（Ｈｆ）の含有割合が、成分（Ａ）の全量基準で、１４．０質量％以上である。
要件（Ｉ）を満たすように調整された基油（Ａ）を用いることで、基油が蒸発し易い、高温環境下及び／又は高圧環境下で使用しても、蒸発量が抑制されて良好な流動性を有する潤滑油組成物とすることができる。その結果、良好な流動性を有する本発明の一態様の潤滑油組成物は、潤滑面に成分（Ｂ）の金属系清浄剤を行き渡らせることができ、デポジットの発生を効果的に抑制することができる。
一方で、成分（Ａ）中の炭素数３２以上の重質分（Ｈｆ）の含有割合が１４．０質量％未満である潤滑油組成物は、高温環境下及び／又は高圧環境下での蒸発が十分に抑制されず、流動性の低下を招き、デポジットの発生の抑制効果が不十分となる傾向にある。 The base oil (A) used in one embodiment of the present invention satisfies the following requirement (I).
- Requirement (I): The content rate of the heavy fraction (Hf) having 32 or more carbon atoms in component (A) is 14.0% by mass or more based on the total amount of component (A).
By using base oil (A) that has been adjusted to meet requirement (I), the amount of evaporation is suppressed and is good even when used in high temperature and/or high pressure environments where base oil easily evaporates. A lubricating oil composition having excellent fluidity can be obtained. As a result, the lubricating oil composition of one embodiment of the present invention, which has good fluidity, can spread the metallic detergent of component (B) over the lubricated surface, and can effectively suppress the generation of deposits. I can do it.
On the other hand, a lubricating oil composition in which the content of a heavy fraction (Hf) having 32 or more carbon atoms in component (A) is less than 14.0% by mass is difficult to evaporate under a high temperature environment and/or a high pressure environment. is not sufficiently suppressed, leading to a decrease in fluidity, and the effect of suppressing the occurrence of deposits tends to be insufficient.
・要件（Ｉ）：成分（Ａ）中の炭素数３２以上の重質分（Ｈｆ）の含有割合が、成分（Ａ）の全量基準で、１４．０質量％以上である。
要件（Ｉ）を満たすように調整された基油（Ａ）を用いることで、基油が蒸発し易い、高温環境下及び／又は高圧環境下で使用しても、蒸発量が抑制されて良好な流動性を有する潤滑油組成物とすることができる。その結果、良好な流動性を有する本発明の一態様の潤滑油組成物は、潤滑面に成分（Ｂ）の金属系清浄剤を行き渡らせることができ、デポジットの発生を効果的に抑制することができる。
一方で、成分（Ａ）中の炭素数３２以上の重質分（Ｈｆ）の含有割合が１４．０質量％未満である潤滑油組成物は、高温環境下及び／又は高圧環境下での蒸発が十分に抑制されず、流動性の低下を招き、デポジットの発生の抑制効果が不十分となる傾向にある。 The base oil (A) used in one embodiment of the present invention satisfies the following requirement (I).
- Requirement (I): The content rate of the heavy fraction (Hf) having 32 or more carbon atoms in component (A) is 14.0% by mass or more based on the total amount of component (A).
By using base oil (A) that has been adjusted to meet requirement (I), the amount of evaporation is suppressed and is good even when used in high temperature and/or high pressure environments where base oil easily evaporates. A lubricating oil composition having excellent fluidity can be obtained. As a result, the lubricating oil composition of one embodiment of the present invention, which has good fluidity, can spread the metallic detergent of component (B) over the lubricated surface, and can effectively suppress the generation of deposits. I can do it.
On the other hand, a lubricating oil composition in which the content of a heavy fraction (Hf) having 32 or more carbon atoms in component (A) is less than 14.0% by mass is difficult to evaporate under a high temperature environment and/or a high pressure environment. is not sufficiently suppressed, leading to a decrease in fluidity, and the effect of suppressing the occurrence of deposits tends to be insufficient.
高温環境下及び／又は高圧環境下で使用しても、良好な流動性が保持され、デポジットの発生の抑制効果が高い潤滑油組成物とする観点から、炭素数３２以上の重質分（Ｈｆ）の含有割合は、成分（Ａ）の全量（１００質量％）基準で、好ましくは１５．０質量％以上、より好ましくは１６．０質量％以上、更に好ましくは１７．０質量％以上、より更に好ましくは１８．０質量％以上、特に好ましくは１９．０質量％以上であり、また、省燃費性を良好とした潤滑油組成物とする観点から、好ましくは４０．０質量％以下、より好ましくは３７．０質量％以下、より好ましくは３５．０質量％以下、より好ましくは３３．０質量％以下、更に好ましくは３０．０質量％以下、更に好ましくは２７．０質量％以下、より更に好ましくは２５．０質量％以下、特に好ましくは２３．０質量％以下である。
From the viewpoint of creating a lubricating oil composition that maintains good fluidity and is highly effective in suppressing deposit generation even when used in a high temperature environment and/or a high pressure environment, heavy components with a carbon number of 32 or more (Hf ) is preferably 15.0% by mass or more, more preferably 16.0% by mass or more, even more preferably 17.0% by mass or more, based on the total amount (100% by mass) of component (A). More preferably, it is 18.0% by mass or more, particularly preferably 19.0% by mass or more, and from the viewpoint of providing a lubricating oil composition with good fuel economy, preferably 40.0% by mass or less, more Preferably 37.0% by mass or less, more preferably 35.0% by mass or less, more preferably 33.0% by mass or less, even more preferably 30.0% by mass or less, even more preferably 27.0% by mass or less, and more It is more preferably 25.0% by mass or less, particularly preferably 23.0% by mass or less.
また、本発明の一態様で用いる基油（Ａ）は、さらに、下記要件（IIａ）及び（IIｂ）の少なくとも一方を満たすことが好ましく、さらに、下記要件（IIａ）及び（IIｂ）の双方を満たすことがより好ましい。
・要件（II）：成分（Ａ）中の炭素数２１以下の軽質分（Ｌｆ）と、炭素数３２以上の重質分（Ｈｆ）との含有量比［（Ｌｆ）／（Ｈｆ）］が、質量比で、０．０５以上である。
・要件（III）：成分（Ａ）中の炭素数２１以下の軽質分（Ｌｆ）の含有割合が、成分（Ａ）の全量基準で、１．０質量％以上である。
要件（II）及び／又は要件（III）を満たすように調整された基油（Ａ）を用いることで、省燃費性を向上させた潤滑油組成物とすることができる。 Furthermore, the base oil (A) used in one embodiment of the present invention preferably satisfies at least one of the following requirements (IIa) and (IIb), and further satisfies both of the following requirements (IIa) and (IIb). It is more preferable to satisfy.
・Requirement (II): The content ratio [(Lf)/(Hf)] of the light fraction (Lf) having 21 or less carbon atoms and the heavy fraction (Hf) having 32 or more carbon atoms in component (A) is , the mass ratio is 0.05 or more.
- Requirement (III): The content ratio of light fractions (Lf) having 21 or less carbon atoms in component (A) is 1.0% by mass or more based on the total amount of component (A).
By using the base oil (A) adjusted to satisfy requirement (II) and/or requirement (III), a lubricating oil composition with improved fuel efficiency can be obtained.
・要件（II）：成分（Ａ）中の炭素数２１以下の軽質分（Ｌｆ）と、炭素数３２以上の重質分（Ｈｆ）との含有量比［（Ｌｆ）／（Ｈｆ）］が、質量比で、０．０５以上である。
・要件（III）：成分（Ａ）中の炭素数２１以下の軽質分（Ｌｆ）の含有割合が、成分（Ａ）の全量基準で、１．０質量％以上である。
要件（II）及び／又は要件（III）を満たすように調整された基油（Ａ）を用いることで、省燃費性を向上させた潤滑油組成物とすることができる。 Furthermore, the base oil (A) used in one embodiment of the present invention preferably satisfies at least one of the following requirements (IIa) and (IIb), and further satisfies both of the following requirements (IIa) and (IIb). It is more preferable to satisfy.
・Requirement (II): The content ratio [(Lf)/(Hf)] of the light fraction (Lf) having 21 or less carbon atoms and the heavy fraction (Hf) having 32 or more carbon atoms in component (A) is , the mass ratio is 0.05 or more.
- Requirement (III): The content ratio of light fractions (Lf) having 21 or less carbon atoms in component (A) is 1.0% by mass or more based on the total amount of component (A).
By using the base oil (A) adjusted to satisfy requirement (II) and/or requirement (III), a lubricating oil composition with improved fuel efficiency can be obtained.
省燃費性をより向上させた潤滑油組成物とする観点から、含有量比［（Ｌｆ）／（Ｈｆ）］は、質量比で、好ましくは０．０７以上、より好ましくは０．０９以上、より好ましくは０．１０以上、更に好ましくは０．１１以上、より更に好ましくは０．１２以上、特に好ましくは０．１３以上であり、さらに、０．１５以上、０．１７以上、０．２０以上、０．２３以上、０．２５以上、０．２７以上、又は０．３０以上としてもよい。
また、高温環境下及び／又は高圧環境下で使用しても、良好な流動性がより保持され、デポジットの発生の抑制効果がより高い潤滑油組成物とする観点から、含有量比［（Ｌｆ）／（Ｈｆ）］は、質量比で、好ましくは０．８０以下、より好ましくは０．７０以下、より好ましくは０．６０以下、更に好ましくは０．５５以下、より更に好ましくは０．５０以下、特に好ましくは０．４８以下である。 From the viewpoint of obtaining a lubricating oil composition with further improved fuel efficiency, the content ratio [(Lf)/(Hf)] is preferably 0.07 or more, more preferably 0.09 or more, in terms of mass ratio, More preferably 0.10 or more, still more preferably 0.11 or more, even more preferably 0.12 or more, particularly preferably 0.13 or more, furthermore 0.15 or more, 0.17 or more, 0.20 Above, it is good also as 0.23 or more, 0.25 or more, 0.27 or more, or 0.30 or more.
In addition, from the viewpoint of creating a lubricating oil composition that retains good fluidity even when used in a high-temperature environment and/or a high-pressure environment and has a higher effect of suppressing deposit generation, the content ratio [(Lf )/(Hf)] is a mass ratio, preferably 0.80 or less, more preferably 0.70 or less, more preferably 0.60 or less, even more preferably 0.55 or less, even more preferably 0.50. It is particularly preferably 0.48 or less.
また、高温環境下及び／又は高圧環境下で使用しても、良好な流動性がより保持され、デポジットの発生の抑制効果がより高い潤滑油組成物とする観点から、含有量比［（Ｌｆ）／（Ｈｆ）］は、質量比で、好ましくは０．８０以下、より好ましくは０．７０以下、より好ましくは０．６０以下、更に好ましくは０．５５以下、より更に好ましくは０．５０以下、特に好ましくは０．４８以下である。 From the viewpoint of obtaining a lubricating oil composition with further improved fuel efficiency, the content ratio [(Lf)/(Hf)] is preferably 0.07 or more, more preferably 0.09 or more, in terms of mass ratio, More preferably 0.10 or more, still more preferably 0.11 or more, even more preferably 0.12 or more, particularly preferably 0.13 or more, furthermore 0.15 or more, 0.17 or more, 0.20 Above, it is good also as 0.23 or more, 0.25 or more, 0.27 or more, or 0.30 or more.
In addition, from the viewpoint of creating a lubricating oil composition that retains good fluidity even when used in a high-temperature environment and/or a high-pressure environment and has a higher effect of suppressing deposit generation, the content ratio [(Lf )/(Hf)] is a mass ratio, preferably 0.80 or less, more preferably 0.70 or less, more preferably 0.60 or less, even more preferably 0.55 or less, even more preferably 0.50. It is particularly preferably 0.48 or less.
省燃費性をより向上させた潤滑油組成物とする観点から、炭素数２１以下の軽質分（Ｌｆ）の含有割合は、成分（Ａ）の全量（１００質量％）基準で、好ましくは１．５質量％以上、より好ましくは１．７質量％以上、更に好ましくは２．０質量％以上、より更に好ましくは２．３質量％以上、特に好ましくは２．５質量％以上であり、さらに、２．７質量％以上、３．０質量％以上、３．５質量％以上、４．０質量％以上、４．５質量％以上、５．０質量％以上、５．５質量％以上、６．０質量％以上、６．５質量％以上、又は７．０質量％以上としてもよい。
また、高温環境下及び／又は高圧環境下で使用しても、良好な流動性がより保持され、デポジットの発生の抑制効果がより高い潤滑油組成物とする観点から、炭素数２１以下の軽質分（Ｌｆ）の含有割合は、成分（Ａ）の全量（１００質量％）基準で、好ましくは２５．０質量％以下、より好ましくは２０．０質量％以下、より好ましくは１７．０質量％以下、より好ましくは１５．０質量％以下、更に好ましくは１２．０質量％以下、更に好ましくは１０．０質量％以下、より更に好ましくは９．５質量％以下、特に好ましくは９．０質量％以下である。 From the viewpoint of providing a lubricating oil composition with further improved fuel efficiency, the content ratio of light fractions (Lf) having 21 or less carbon atoms is preferably 1.0% based on the total amount (100% by mass) of component (A). 5% by mass or more, more preferably 1.7% by mass or more, even more preferably 2.0% by mass or more, even more preferably 2.3% by mass or more, particularly preferably 2.5% by mass or more, and further, 2.7% by mass or more, 3.0% by mass or more, 3.5% by mass or more, 4.0% by mass or more, 4.5% by mass or more, 5.0% by mass or more, 5.5% by mass or more, 6 It may be .0% by mass or more, 6.5% by mass or more, or 7.0% by mass or more.
In addition, from the viewpoint of creating a lubricating oil composition that retains good fluidity even when used in a high temperature environment and/or a high pressure environment and has a higher effect of suppressing the occurrence of deposits, a light lubricant with a carbon number of 21 or less is used. The content ratio of component (Lf) is preferably 25.0% by mass or less, more preferably 20.0% by mass or less, and more preferably 17.0% by mass, based on the total amount (100% by mass) of component (A). The following is more preferably 15.0% by mass or less, still more preferably 12.0% by mass or less, even more preferably 10.0% by mass or less, even more preferably 9.5% by mass or less, particularly preferably 9.0% by mass. % or less.
また、高温環境下及び／又は高圧環境下で使用しても、良好な流動性がより保持され、デポジットの発生の抑制効果がより高い潤滑油組成物とする観点から、炭素数２１以下の軽質分（Ｌｆ）の含有割合は、成分（Ａ）の全量（１００質量％）基準で、好ましくは２５．０質量％以下、より好ましくは２０．０質量％以下、より好ましくは１７．０質量％以下、より好ましくは１５．０質量％以下、更に好ましくは１２．０質量％以下、更に好ましくは１０．０質量％以下、より更に好ましくは９．５質量％以下、特に好ましくは９．０質量％以下である。 From the viewpoint of providing a lubricating oil composition with further improved fuel efficiency, the content ratio of light fractions (Lf) having 21 or less carbon atoms is preferably 1.0% based on the total amount (100% by mass) of component (A). 5% by mass or more, more preferably 1.7% by mass or more, even more preferably 2.0% by mass or more, even more preferably 2.3% by mass or more, particularly preferably 2.5% by mass or more, and further, 2.7% by mass or more, 3.0% by mass or more, 3.5% by mass or more, 4.0% by mass or more, 4.5% by mass or more, 5.0% by mass or more, 5.5% by mass or more, 6 It may be .0% by mass or more, 6.5% by mass or more, or 7.0% by mass or more.
In addition, from the viewpoint of creating a lubricating oil composition that retains good fluidity even when used in a high temperature environment and/or a high pressure environment and has a higher effect of suppressing the occurrence of deposits, a light lubricant with a carbon number of 21 or less is used. The content ratio of component (Lf) is preferably 25.0% by mass or less, more preferably 20.0% by mass or less, and more preferably 17.0% by mass, based on the total amount (100% by mass) of component (A). The following is more preferably 15.0% by mass or less, still more preferably 12.0% by mass or less, even more preferably 10.0% by mass or less, even more preferably 9.5% by mass or less, particularly preferably 9.0% by mass. % or less.
本発明の一態様で用いる成分（Ａ）中の炭素数２２以上３１以下の中質分（Ｍｆ）の含有割合は、成分（Ａ）の全量（１００質量％）基準で、好ましくは３５．０質量％以上、より好ましくは４０．０質量％以上、より好ましくは４５．０質量％以上、更に好ましくは５０．０質量％以上、更に好ましくは５５．０質量％以上、より更に好ましくは６０．０質量％以上、特に好ましくは６５．０質量％以上であり、また、好ましくは８５質量％以下、より好ましくは８３．５質量％以下、より好ましくは８１．０質量％以下、更に好ましくは８０．０質量％以下、更に好ましくは７９．０質量％以下、より更に好ましくは７８．０質量％以下、特に好ましくは７７．０質量％以下である。
The content ratio of the medium fraction (Mf) having 22 to 31 carbon atoms in the component (A) used in one aspect of the present invention is preferably 35.0% based on the total amount (100% by mass) of the component (A). % by mass or more, more preferably 40.0% by mass or more, more preferably 45.0% by mass or more, still more preferably 50.0% by mass or more, still more preferably 55.0% by mass or more, even more preferably 60.0% by mass or more. 0% by mass or more, particularly preferably 65.0% by mass or more, and preferably 85% by mass or less, more preferably 83.5% by mass or less, more preferably 81.0% by mass or less, even more preferably 80% by mass or less. 0% by mass or less, more preferably 79.0% by mass or less, even more preferably 78.0% by mass or less, particularly preferably 77.0% by mass or less.
なお、本明細書において、成分（Ａ）を構成する各炭素数の成分の含有量、炭素数３２以上の重質分（Ｈｆ）の含有割合、炭素数２１以下の軽質分（Ｌｆ）の含有割合、及び、炭素数２２以上３１以上の中質分（Ｍｆ）の含有割合は、実施例に記載の方法に準拠して測定された値を意味する。
In addition, in this specification, the content of each carbon number component constituting component (A), the content ratio of the heavy fraction (Hf) having 32 or more carbon atoms, and the content of the light fraction (Lf) having 21 or less carbon atoms. The ratio and the content ratio of medium fraction (Mf) having 22 or more carbon atoms and 31 or more carbon atoms mean values measured according to the method described in Examples.
本発明の一態様で用いる成分（Ａ）の４０℃における動粘度は、好ましくは１０～１２０ｍｍ２／ｓ、より好ましくは１５～１００ｍｍ２／ｓ、より好ましくは２０～８０ｍｍ２／ｓ、更に好ましくは２５～７０ｍｍ２／ｓ、より更に好ましくは３０～６０ｍｍ２／ｓ、特に好ましくは３５～５０ｍｍ２／ｓである。
The kinematic viscosity at 40°C of component (A) used in one aspect of the present invention is preferably 10 to 120 mm 2 /s, more preferably 15 to 100 mm 2 /s, more preferably 20 to 80 mm 2 /s, and even more preferably is 25 to 70 mm 2 /s, even more preferably 30 to 60 mm 2 /s, particularly preferably 35 to 50 mm 2 /s.
本発明の一態様で用いる成分（Ａ）の粘度指数は、好ましくは８０以上、より好ましくは１００以上、更に好ましくは１１０以上、より更に好ましくは１２０以上、特に好ましくは１３０以上である。
The viscosity index of component (A) used in one aspect of the present invention is preferably 80 or more, more preferably 100 or more, even more preferably 110 or more, even more preferably 120 or more, particularly preferably 130 or more.
動粘度及び粘度指数は、ＪＩＳ Ｋ２２８３：２０００に準拠して測定及び算出された値を意味する。
なお、本発明の一態様において、成分（Ａ）として、２種以上の基油を組み合わせた混合油を用いる場合、当該混合油の動粘度及び粘度指数が上記範囲であることが好ましい。また、当該混合油を構成する基油の含有割合から算出した動粘度及び粘度指数の加重平均が、上記範囲であることが好ましい。 Kinematic viscosity and viscosity index mean values measured and calculated in accordance with JIS K2283:2000.
In addition, in one aspect of the present invention, when a mixed oil that is a combination of two or more base oils is used as component (A), it is preferable that the kinematic viscosity and viscosity index of the mixed oil are within the above ranges. Further, it is preferable that the weighted average of the kinematic viscosity and the viscosity index calculated from the content ratio of the base oil constituting the mixed oil is within the above range.
なお、本発明の一態様において、成分（Ａ）として、２種以上の基油を組み合わせた混合油を用いる場合、当該混合油の動粘度及び粘度指数が上記範囲であることが好ましい。また、当該混合油を構成する基油の含有割合から算出した動粘度及び粘度指数の加重平均が、上記範囲であることが好ましい。 Kinematic viscosity and viscosity index mean values measured and calculated in accordance with JIS K2283:2000.
In addition, in one aspect of the present invention, when a mixed oil that is a combination of two or more base oils is used as component (A), it is preferable that the kinematic viscosity and viscosity index of the mixed oil are within the above ranges. Further, it is preferable that the weighted average of the kinematic viscosity and the viscosity index calculated from the content ratio of the base oil constituting the mixed oil is within the above range.
本発明の一態様の潤滑油組成物において、成分（Ａ）の含有量は、当該潤滑油組成物の全量（１００質量％）基準で、好ましくは４０質量％以上、より好ましくは５０質量％以上、より好ましくは６０質量％以上、更に好ましくは６５質量％以上、更に好ましくは７０質量％以上、より更に好ましくは７５質量％以上、特に好ましくは８０質量％以上であり、また、９９．９質量％以下、９９．５質量％以下、９９．０質量％以下、９７．０質量％以下、９５．０質量％以下、９２．０質量％以下、又は９０．０質量％以下としてもよい。
In the lubricating oil composition of one aspect of the present invention, the content of component (A) is preferably 40% by mass or more, more preferably 50% by mass or more, based on the total amount (100% by mass) of the lubricating oil composition. , more preferably 60% by mass or more, still more preferably 65% by mass or more, even more preferably 70% by mass or more, even more preferably 75% by mass or more, particularly preferably 80% by mass or more, and 99.9% by mass % or less, 99.5% by mass or less, 99.0% by mass or less, 97.0% by mass or less, 95.0% by mass or less, 92.0% by mass or less, or 90.0% by mass or less.
＜成分（Ｂ）：金属系清浄剤＞
本発明の一態様の潤滑油組成物は、塩基価１００ｍｇＫＯＨ／ｇ以上の過塩基性カルシウムサリシレート（Ｂ１）を含む金属系清浄剤（Ｂ）を含有する。
なお、本発明の一態様で用いる成分（Ｂ）及び成分（Ｂ１）は、単独で用いてもよく、２種以上を併用してもよい。
金属系清浄剤（Ｂ）として、過塩基性カルシウムサリシレート（Ｂ１）を含有することで、高温環境下での清浄性及び安定性を向上させると共に、省燃費性にも優れた潤滑油組成物とすることができる。
なお、本発明の一態様で用いる成分（Ｂ）は、単独で用いてもよく、２種以上を併用してもよい。 <Component (B): Metallic cleaning agent>
The lubricating oil composition of one embodiment of the present invention contains a metal detergent (B) containing an overbased calcium salicylate (B1) having a base value of 100 mgKOH/g or more.
Note that component (B) and component (B1) used in one embodiment of the present invention may be used alone, or two or more types may be used in combination.
By containing overbased calcium salicylate (B1) as the metal-based detergent (B), a lubricating oil composition that not only improves cleanliness and stability in high-temperature environments but also has excellent fuel efficiency. can do.
Note that the component (B) used in one embodiment of the present invention may be used alone, or two or more types may be used in combination.
本発明の一態様の潤滑油組成物は、塩基価１００ｍｇＫＯＨ／ｇ以上の過塩基性カルシウムサリシレート（Ｂ１）を含む金属系清浄剤（Ｂ）を含有する。
なお、本発明の一態様で用いる成分（Ｂ）及び成分（Ｂ１）は、単独で用いてもよく、２種以上を併用してもよい。
金属系清浄剤（Ｂ）として、過塩基性カルシウムサリシレート（Ｂ１）を含有することで、高温環境下での清浄性及び安定性を向上させると共に、省燃費性にも優れた潤滑油組成物とすることができる。
なお、本発明の一態様で用いる成分（Ｂ）は、単独で用いてもよく、２種以上を併用してもよい。 <Component (B): Metallic cleaning agent>
The lubricating oil composition of one embodiment of the present invention contains a metal detergent (B) containing an overbased calcium salicylate (B1) having a base value of 100 mgKOH/g or more.
Note that component (B) and component (B1) used in one embodiment of the present invention may be used alone, or two or more types may be used in combination.
By containing overbased calcium salicylate (B1) as the metal-based detergent (B), a lubricating oil composition that not only improves cleanliness and stability in high-temperature environments but also has excellent fuel efficiency. can do.
Note that the component (B) used in one embodiment of the present invention may be used alone, or two or more types may be used in combination.
本発明の一態様の潤滑油組成物において、高温環境下での清浄性及び安定性を向上させると共に、省燃費性にも優れた潤滑油組成物とする観点から、成分（Ｂ）中の成分（Ｂ１）の含有割合は、当該潤滑油組成物に含まれる成分（Ｂ）の全量（１００質量％）基準で、３５．０質量％以上である。
成分（Ｂ１）の含有割合が３５．０質量％未満である潤滑油組成物は、高温環境下での清浄性及び安定性に問題が生じ易く、また、省燃費性が低下する場合がある。
上記観点から、成分（Ｂ）中の成分（Ｂ１）の含有割合は、当該潤滑油組成物に含まれる成分（Ｂ）の全量（１００質量％）基準で、好ましくは３７．０質量％以上、より好ましくは４０．０質量％以上であり、さらに省燃費性により優れた潤滑油組成物とする観点から、より好ましくは４５．０質量％以上、更に好ましくは５０．０質量％以上、更に好ましくは５５．０質量％以上、より更に好ましくは６０．０質量％以上、特に好ましくは６３．０質量％以上であり、また、１００質量％以下、９９．０質量％以下、９８．０質量％以下、９５．０質量％以下、９０．０質量％以下、８５．０質量％以下、８０．０質量％以下、７５．０質量％以下、又は７０．０質量％以下としてもよい。 In the lubricating oil composition of one embodiment of the present invention, from the viewpoint of improving cleanliness and stability in a high-temperature environment and providing a lubricating oil composition that is also excellent in fuel efficiency, the components in component (B) are The content ratio of (B1) is 35.0% by mass or more based on the total amount (100% by mass) of component (B) contained in the lubricating oil composition.
A lubricating oil composition in which the content of component (B1) is less than 35.0% by mass tends to have problems with cleanliness and stability in a high-temperature environment, and may have reduced fuel efficiency.
From the above viewpoint, the content ratio of component (B1) in component (B) is preferably 37.0% by mass or more, based on the total amount (100% by mass) of component (B) contained in the lubricating oil composition. It is more preferably 40.0% by mass or more, and from the viewpoint of providing a lubricating oil composition with better fuel efficiency, it is more preferably 45.0% by mass or more, still more preferably 50.0% by mass or more, even more preferably is 55.0% by mass or more, more preferably 60.0% by mass or more, particularly preferably 63.0% by mass or more, and 100% by mass or less, 99.0% by mass or less, 98.0% by mass Hereinafter, the content may be 95.0% by mass or less, 90.0% by mass or less, 85.0% by mass or less, 80.0% by mass or less, 75.0% by mass or less, or 70.0% by mass or less.
成分（Ｂ１）の含有割合が３５．０質量％未満である潤滑油組成物は、高温環境下での清浄性及び安定性に問題が生じ易く、また、省燃費性が低下する場合がある。
上記観点から、成分（Ｂ）中の成分（Ｂ１）の含有割合は、当該潤滑油組成物に含まれる成分（Ｂ）の全量（１００質量％）基準で、好ましくは３７．０質量％以上、より好ましくは４０．０質量％以上であり、さらに省燃費性により優れた潤滑油組成物とする観点から、より好ましくは４５．０質量％以上、更に好ましくは５０．０質量％以上、更に好ましくは５５．０質量％以上、より更に好ましくは６０．０質量％以上、特に好ましくは６３．０質量％以上であり、また、１００質量％以下、９９．０質量％以下、９８．０質量％以下、９５．０質量％以下、９０．０質量％以下、８５．０質量％以下、８０．０質量％以下、７５．０質量％以下、又は７０．０質量％以下としてもよい。 In the lubricating oil composition of one embodiment of the present invention, from the viewpoint of improving cleanliness and stability in a high-temperature environment and providing a lubricating oil composition that is also excellent in fuel efficiency, the components in component (B) are The content ratio of (B1) is 35.0% by mass or more based on the total amount (100% by mass) of component (B) contained in the lubricating oil composition.
A lubricating oil composition in which the content of component (B1) is less than 35.0% by mass tends to have problems with cleanliness and stability in a high-temperature environment, and may have reduced fuel efficiency.
From the above viewpoint, the content ratio of component (B1) in component (B) is preferably 37.0% by mass or more, based on the total amount (100% by mass) of component (B) contained in the lubricating oil composition. It is more preferably 40.0% by mass or more, and from the viewpoint of providing a lubricating oil composition with better fuel efficiency, it is more preferably 45.0% by mass or more, still more preferably 50.0% by mass or more, even more preferably is 55.0% by mass or more, more preferably 60.0% by mass or more, particularly preferably 63.0% by mass or more, and 100% by mass or less, 99.0% by mass or less, 98.0% by mass Hereinafter, the content may be 95.0% by mass or less, 90.0% by mass or less, 85.0% by mass or less, 80.0% by mass or less, 75.0% by mass or less, or 70.0% by mass or less.
本発明の一態様で用いる成分（Ｂ１）としては、例えば、下記一般式（ｂ－１）で表される化合物が挙げられる。
Examples of the component (B1) used in one embodiment of the present invention include a compound represented by the following general formula (b-1).
上記一般式（ｂ－１）中、Ｒは、水素原子又は炭素数１～１８の炭化水素基である。
Ｒとして選択し得る炭化水素基としては、例えば、炭素数１～１８のアルキル基、炭素数１～１８のアルケニル基、環形成炭素数３～１８のシクロアルキル基、環形成炭素数６～１８のアリール基、炭素数７～１８のアルキルアリール基、炭素数７～１８のアリールアルキル基等が挙げられる。 In the above general formula (b-1), R is a hydrogen atom or a hydrocarbon group having 1 to 18 carbon atoms.
Examples of the hydrocarbon group that can be selected as R include an alkyl group having 1 to 18 carbon atoms, an alkenyl group having 1 to 18 carbon atoms, a cycloalkyl group having 3 to 18 ring carbon atoms, and a cycloalkyl group having 6 to 18 ring carbon atoms. Examples include aryl groups having 7 to 18 carbon atoms, alkylaryl groups having 7 to 18 carbon atoms, and arylalkyl groups having 7 to 18 carbon atoms.
Ｒとして選択し得る炭化水素基としては、例えば、炭素数１～１８のアルキル基、炭素数１～１８のアルケニル基、環形成炭素数３～１８のシクロアルキル基、環形成炭素数６～１８のアリール基、炭素数７～１８のアルキルアリール基、炭素数７～１８のアリールアルキル基等が挙げられる。 In the above general formula (b-1), R is a hydrogen atom or a hydrocarbon group having 1 to 18 carbon atoms.
Examples of the hydrocarbon group that can be selected as R include an alkyl group having 1 to 18 carbon atoms, an alkenyl group having 1 to 18 carbon atoms, a cycloalkyl group having 3 to 18 ring carbon atoms, and a cycloalkyl group having 6 to 18 ring carbon atoms. Examples include aryl groups having 7 to 18 carbon atoms, alkylaryl groups having 7 to 18 carbon atoms, and arylalkyl groups having 7 to 18 carbon atoms.
本発明の一態様で用いる成分（Ｂ１）は、過塩基性であるため、塩基価は１００ｍｇＫＯＨ／ｇ以上である。
高温環境下での清浄性及び安定性をより向上させると共に、省燃費性にもより優れた潤滑油組成物とする観点から、本発明の一態様で用いる成分（Ｂ１）の塩基価は、好ましくは１２０ｍｇＫＯＨ／ｇ以上、より好ましくは１５０ｍｇＫＯＨ／ｇ以上、より好ましくは１７０ｍｇＫＯＨ／ｇ以上、更に好ましくは２００ｍｇＫＯＨ／ｇ以上、更に好ましくは２２０ｍｇＫＯＨ／ｇ以上、より更に好ましくは２５０ｍｇＫＯＨ／ｇ以上、特に好ましくは２７０ｍｇＫＯＨ／ｇ以上であり、また、６００ｍｇＫＯＨ／ｇ以下、５５０ｍｇＫＯＨ／ｇ以下、５００ｍｇＫＯＨ／ｇ以下、４５０ｍｇＫＯＨ／ｇ以下、又は４００ｍｇＫＯＨ／ｇ以下としてもよい。
なお、本明細書において、「塩基価」は、ＪＩＳ Ｋ２５０１「石油製品及び潤滑油－中和価試験方法」の「９．電位差滴定法（塩基価・過塩素酸法）」に準拠した過塩素酸法により測定された値を意味する。 Component (B1) used in one embodiment of the present invention is overbased, and therefore has a base value of 100 mgKOH/g or more.
From the viewpoint of providing a lubricating oil composition that further improves cleanliness and stability in a high-temperature environment and also has better fuel efficiency, the base number of component (B1) used in one embodiment of the present invention is preferably is 120 mgKOH/g or more, more preferably 150 mgKOH/g or more, more preferably 170 mgKOH/g or more, still more preferably 200 mgKOH/g or more, even more preferably 220 mgKOH/g, even more preferably 250 mgKOH/g or more, particularly preferably It is 270 mgKOH/g or more, and may be 600 mgKOH/g or less, 550 mgKOH/g or less, 500 mgKOH/g or less, 450 mgKOH/g or less, or 400 mgKOH/g or less.
In addition, in this specification, "base number" refers to perchlorine based on "9. Potentiometric titration method (base number/perchloric acid method)" of JIS K2501 "Petroleum products and lubricating oils - Neutralization number test method". Means the value measured by the acid method.
高温環境下での清浄性及び安定性をより向上させると共に、省燃費性にもより優れた潤滑油組成物とする観点から、本発明の一態様で用いる成分（Ｂ１）の塩基価は、好ましくは１２０ｍｇＫＯＨ／ｇ以上、より好ましくは１５０ｍｇＫＯＨ／ｇ以上、より好ましくは１７０ｍｇＫＯＨ／ｇ以上、更に好ましくは２００ｍｇＫＯＨ／ｇ以上、更に好ましくは２２０ｍｇＫＯＨ／ｇ以上、より更に好ましくは２５０ｍｇＫＯＨ／ｇ以上、特に好ましくは２７０ｍｇＫＯＨ／ｇ以上であり、また、６００ｍｇＫＯＨ／ｇ以下、５５０ｍｇＫＯＨ／ｇ以下、５００ｍｇＫＯＨ／ｇ以下、４５０ｍｇＫＯＨ／ｇ以下、又は４００ｍｇＫＯＨ／ｇ以下としてもよい。
なお、本明細書において、「塩基価」は、ＪＩＳ Ｋ２５０１「石油製品及び潤滑油－中和価試験方法」の「９．電位差滴定法（塩基価・過塩素酸法）」に準拠した過塩素酸法により測定された値を意味する。 Component (B1) used in one embodiment of the present invention is overbased, and therefore has a base value of 100 mgKOH/g or more.
From the viewpoint of providing a lubricating oil composition that further improves cleanliness and stability in a high-temperature environment and also has better fuel efficiency, the base number of component (B1) used in one embodiment of the present invention is preferably is 120 mgKOH/g or more, more preferably 150 mgKOH/g or more, more preferably 170 mgKOH/g or more, still more preferably 200 mgKOH/g or more, even more preferably 220 mgKOH/g, even more preferably 250 mgKOH/g or more, particularly preferably It is 270 mgKOH/g or more, and may be 600 mgKOH/g or less, 550 mgKOH/g or less, 500 mgKOH/g or less, 450 mgKOH/g or less, or 400 mgKOH/g or less.
In addition, in this specification, "base number" refers to perchlorine based on "9. Potentiometric titration method (base number/perchloric acid method)" of JIS K2501 "Petroleum products and lubricating oils - Neutralization number test method". Means the value measured by the acid method.
本発明の一態様の潤滑油組成物において、高温環境下での清浄性及び安定性をより向上させると共に、省燃費性もより優れた潤滑油組成物とする観点から、成分（Ｂ１）のカルシウム原子換算での含有量は、当該潤滑油組成物の全量（１００質量％）基準で、好ましくは０．０１質量％以上、より好ましくは０．０５質量％以上、より好ましくは０．０７質量％以上、更に好ましくは０．１０質量％以上、より更に好ましくは０．１２質量％以上、特に好ましくは０．１４質量％以上であり、また、０．８０質量％以下、０．７０質量％以下、０．６０質量％以下、０．５０質量％以下、０．４０質量％以下、０．３０質量％以下、０．２５質量％以下、０．２２質量％以下、又は０．２０質量％以下とすることが好ましい。
なお、本明細書において、カルシウム原子（Ｃａ）の含有量は、ＪＰＩ－５Ｓ－３８－９２に準拠して測定された値を意味する。 In the lubricating oil composition of one embodiment of the present invention, from the viewpoint of providing a lubricating oil composition that further improves cleanliness and stability in a high-temperature environment and also has better fuel efficiency, calcium is added as component (B1). The content in terms of atoms is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, and more preferably 0.07% by mass, based on the total amount (100% by mass) of the lubricating oil composition. Above, more preferably 0.10% by mass or more, even more preferably 0.12% by mass or more, particularly preferably 0.14% by mass or more, and 0.80% by mass or less, 0.70% by mass or less , 0.60 mass% or less, 0.50 mass% or less, 0.40 mass% or less, 0.30 mass% or less, 0.25 mass% or less, 0.22 mass% or less, or 0.20 mass% or less It is preferable that
Note that in this specification, the content of calcium atoms (Ca) means a value measured in accordance with JPI-5S-38-92.
なお、本明細書において、カルシウム原子（Ｃａ）の含有量は、ＪＰＩ－５Ｓ－３８－９２に準拠して測定された値を意味する。 In the lubricating oil composition of one embodiment of the present invention, from the viewpoint of providing a lubricating oil composition that further improves cleanliness and stability in a high-temperature environment and also has better fuel efficiency, calcium is added as component (B1). The content in terms of atoms is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, and more preferably 0.07% by mass, based on the total amount (100% by mass) of the lubricating oil composition. Above, more preferably 0.10% by mass or more, even more preferably 0.12% by mass or more, particularly preferably 0.14% by mass or more, and 0.80% by mass or less, 0.70% by mass or less , 0.60 mass% or less, 0.50 mass% or less, 0.40 mass% or less, 0.30 mass% or less, 0.25 mass% or less, 0.22 mass% or less, or 0.20 mass% or less It is preferable that
Note that in this specification, the content of calcium atoms (Ca) means a value measured in accordance with JPI-5S-38-92.
本発明の一態様の潤滑油組成物において、高温環境下での清浄性及び安定性をより向上させると共に、省燃費性もより優れた潤滑油組成物とする観点から、成分（Ｂ１）の含有量は、当該潤滑油組成物の全量（１００質量％）基準で、好ましくは０．１０質量％以上、より好ましくは０．５０質量％以上、より好ましくは０．７０質量％以上、更に好ましくは１．００質量％以上、より更に好ましくは１．２０質量％以上、特に好ましくは１．４０質量％以上であり、また、８．００質量％以下、７．００質量％以下、６．００質量％以下、５．００質量％以下、４．００質量％以下、３．００質量％以下、２．５０質量％以下、２．２０質量％以下、又は２．００質量％以下とすることが好ましい。
In the lubricating oil composition of one embodiment of the present invention, component (B1) is included from the viewpoint of further improving cleanliness and stability in a high-temperature environment and providing a lubricating oil composition with better fuel efficiency. The amount is preferably 0.10% by mass or more, more preferably 0.50% by mass or more, more preferably 0.70% by mass or more, even more preferably 1.00% by mass or more, more preferably 1.20% by mass or more, particularly preferably 1.40% by mass or more, and 8.00% by mass or less, 7.00% by mass or less, 6.00% by mass % or less, 5.00 mass% or less, 4.00 mass% or less, 3.00 mass% or less, 2.50 mass% or less, 2.20 mass% or less, or 2.00 mass% or less .
本発明の一態様の潤滑油組成物は、成分（Ｂ）として、成分（Ｂ１）以外の他の金属系清浄剤（Ｂ２）を含有してもよく、また、成分（Ｂ１）以外の他の金属系清浄剤（Ｂ２）を含有しなくてもよい。
なお、成分（Ｂ２）を含有する場合、成分（Ｂ２）は、単独で用いてもよく、２種以上を併用してもよい。 The lubricating oil composition of one embodiment of the present invention may contain, as component (B), a metal-based detergent (B2) other than component (B1), or may contain other metal-based detergents other than component (B1). It is not necessary to contain the metal detergent (B2).
In addition, when containing the component (B2), the component (B2) may be used alone or in combination of two or more kinds.
なお、成分（Ｂ２）を含有する場合、成分（Ｂ２）は、単独で用いてもよく、２種以上を併用してもよい。 The lubricating oil composition of one embodiment of the present invention may contain, as component (B), a metal-based detergent (B2) other than component (B1), or may contain other metal-based detergents other than component (B1). It is not necessary to contain the metal detergent (B2).
In addition, when containing the component (B2), the component (B2) may be used alone or in combination of two or more kinds.
本発明の一態様で用いる成分（Ｂ２）としては、例えば、アルカリ金属及びアルカリ土類金属から選ばれる金属原子を含有する有機酸金属塩化合物が挙げられ、具体的には、アルカリ金属及びアルカリ土類金属から選ばれる金属原子を含有する、金属サリシレート（ただし、成分（Ｂ１）に該当する過塩基性カルシウムサリシレートを除く）、金属フェネート、及び金属スルホネート等が挙げられる。
金属系清浄剤に含まれる金属原子としては、高温清浄性をより向上させた潤滑油組成物とする観点から、ナトリウム、カルシウム、マグネシウム、又はバリウムが好ましく、カルシウムがより好ましい。 The component (B2) used in one embodiment of the present invention includes, for example, an organic acid metal salt compound containing a metal atom selected from alkali metals and alkaline earth metals. Examples include metal salicylates (excluding overbased calcium salicylate corresponding to component (B1)), metal phenates, metal sulfonates, etc., which contain metal atoms selected from metals.
The metal atoms contained in the metal detergent are preferably sodium, calcium, magnesium, or barium, and more preferably calcium, from the viewpoint of providing a lubricating oil composition with improved high-temperature cleanliness.
金属系清浄剤に含まれる金属原子としては、高温清浄性をより向上させた潤滑油組成物とする観点から、ナトリウム、カルシウム、マグネシウム、又はバリウムが好ましく、カルシウムがより好ましい。 The component (B2) used in one embodiment of the present invention includes, for example, an organic acid metal salt compound containing a metal atom selected from alkali metals and alkaline earth metals. Examples include metal salicylates (excluding overbased calcium salicylate corresponding to component (B1)), metal phenates, metal sulfonates, etc., which contain metal atoms selected from metals.
The metal atoms contained in the metal detergent are preferably sodium, calcium, magnesium, or barium, and more preferably calcium, from the viewpoint of providing a lubricating oil composition with improved high-temperature cleanliness.
なお、本発明の一態様で用いる成分（Ｂ２）は、塩基価が１００ｍｇＫＯＨ／ｇ未満の中性塩、塩基価が１００ｍｇＫＯＨ／ｇ以上の過塩基性塩、及びこれらの混合物のいずれであってもよい。
本発明の一態様で用いる成分（Ｂ２）の塩基価としては、好ましくは０～６００ｍｇＫＯＨ／ｇ、より好ましくは１０～６００ｍｇＫＯＨ／ｇ、更に好ましくは２０～５００ｍｇＫＯＨ／ｇである。 Note that the component (B2) used in one embodiment of the present invention may be any of a neutral salt with a base number of less than 100 mgKOH/g, an overbased salt with a base number of 100 mgKOH/g or more, and a mixture thereof. good.
The base number of component (B2) used in one aspect of the present invention is preferably 0 to 600 mgKOH/g, more preferably 10 to 600 mgKOH/g, and still more preferably 20 to 500 mgKOH/g.
本発明の一態様で用いる成分（Ｂ２）の塩基価としては、好ましくは０～６００ｍｇＫＯＨ／ｇ、より好ましくは１０～６００ｍｇＫＯＨ／ｇ、更に好ましくは２０～５００ｍｇＫＯＨ／ｇである。 Note that the component (B2) used in one embodiment of the present invention may be any of a neutral salt with a base number of less than 100 mgKOH/g, an overbased salt with a base number of 100 mgKOH/g or more, and a mixture thereof. good.
The base number of component (B2) used in one aspect of the present invention is preferably 0 to 600 mgKOH/g, more preferably 10 to 600 mgKOH/g, and still more preferably 20 to 500 mgKOH/g.
高温環境下での清浄性及び安定性をより向上させると共に、省燃費性もより優れた潤滑油組成物とする観点から、本発明の一態様の潤滑油組成物で用いる成分（Ｂ）は、成分（Ｂ１）と塩基価１００ｍｇＫＯＨ／ｇ未満の中性金属スルホネートとを含むことが好ましく、成分（Ｂ１）と塩基価１００ｍｇＫＯＨ／ｇ未満の中性カルシウムスルホネートとを含むことがより好ましい。
From the viewpoint of providing a lubricating oil composition that further improves cleanliness and stability in a high-temperature environment and also has better fuel efficiency, the component (B) used in the lubricating oil composition of one embodiment of the present invention is: It is preferable to contain component (B1) and a neutral metal sulfonate with a base value of less than 100 mgKOH/g, and more preferably to contain component (B1) and a neutral calcium sulfonate with a base value of less than 100 mgKOH/g.
本発明の一態様の潤滑油組成物において、成分（Ｂ）の金属原子換算での含有量は、当該潤滑油組成物の全量（１００質量％）基準で、好ましくは０．０１質量％以上、より好ましくは０．０５質量％以上、より好ましくは０．０７質量％以上、更に好ましくは０．１０質量％以上、より更に好ましくは０．１２質量％以上、特に好ましくは０．１４質量％以上であり、また、１．００質量％以下、０．９０質量％以下、０．８０質量％以下、０．７０質量％以下、０．６０質量％以下、０．５０質量％以下、０．４０質量％以下、０．３０質量％以下、０．２５質量％以下、又は０．２０質量％以下とすることが好ましい。
なお、本明細書において、金属原子の含有量は、ＪＰＩ－５Ｓ－３８－９２に準拠して測定された値を意味する。 In the lubricating oil composition of one embodiment of the present invention, the content of component (B) in terms of metal atoms is preferably 0.01% by mass or more, based on the total amount (100% by mass) of the lubricating oil composition. More preferably 0.05% by mass or more, more preferably 0.07% by mass or more, even more preferably 0.10% by mass or more, even more preferably 0.12% by mass or more, particularly preferably 0.14% by mass or more. and 1.00% by mass or less, 0.90% by mass or less, 0.80% by mass or less, 0.70% by mass or less, 0.60% by mass or less, 0.50% by mass or less, 0.40 It is preferably at most 0.30 mass%, at most 0.25 mass%, or at most 0.20 mass%.
Note that in this specification, the content of metal atoms means a value measured in accordance with JPI-5S-38-92.
なお、本明細書において、金属原子の含有量は、ＪＰＩ－５Ｓ－３８－９２に準拠して測定された値を意味する。 In the lubricating oil composition of one embodiment of the present invention, the content of component (B) in terms of metal atoms is preferably 0.01% by mass or more, based on the total amount (100% by mass) of the lubricating oil composition. More preferably 0.05% by mass or more, more preferably 0.07% by mass or more, even more preferably 0.10% by mass or more, even more preferably 0.12% by mass or more, particularly preferably 0.14% by mass or more. and 1.00% by mass or less, 0.90% by mass or less, 0.80% by mass or less, 0.70% by mass or less, 0.60% by mass or less, 0.50% by mass or less, 0.40 It is preferably at most 0.30 mass%, at most 0.25 mass%, or at most 0.20 mass%.
Note that in this specification, the content of metal atoms means a value measured in accordance with JPI-5S-38-92.
本発明の一態様の潤滑油組成物において、成分（Ｂ）の含有量は、当該潤滑油組成物の全量（１００質量％）基準で、好ましくは０．１０質量％以上、より好ましくは０．５０質量％以上、より好ましくは１．００質量％以上、更に好ましくは１．５０質量％以上、より更に好ましくは１．７０質量％以上、特に好ましくは２，００質量％以上であり、また、８．００質量％以下、７．００質量％以下、６．００質量％以下、５．００質量％以下、４．００質量％以下、３．７０質量％以下、３．５０質量％以下、３．２０質量％以下、３．００質量％以下、２．７０質量％以下、又は２．５０質量％以下としてもよい。
In the lubricating oil composition of one embodiment of the present invention, the content of component (B) is preferably 0.10% by mass or more, more preferably 0.10% by mass or more, based on the total amount (100% by mass) of the lubricating oil composition. 50% by mass or more, more preferably 1.00% by mass or more, even more preferably 1.50% by mass or more, even more preferably 1.70% by mass or more, particularly preferably 2,00% by mass or more, and 8.00% by mass or less, 7.00% by mass or less, 6.00% by mass or less, 5.00% by mass or less, 4.00% by mass or less, 3.70% by mass or less, 3.50% by mass or less, 3 It may be .20% by mass or less, 3.00% by mass or less, 2.70% by mass or less, or 2.50% by mass or less.
＜成分（Ｃ）：粘度指数向上剤＞
本発明の一態様の潤滑油組成物は、成分（Ｃ）として、粘度指数向上剤を含有してもよい。粘度指数向上剤（Ｃ）を含有することで、粘度の温度依存性を小さく、省燃費性が良好な潤滑油組成物とすることができる。
なお、本発明の一態様で用いる成分（Ｃ）は、単独で用いてもよく、２種以上を併用してもよい。 <Component (C): Viscosity index improver>
The lubricating oil composition of one embodiment of the present invention may contain a viscosity index improver as component (C). By containing the viscosity index improver (C), a lubricating oil composition with low temperature dependence of viscosity and good fuel efficiency can be obtained.
Note that the component (C) used in one embodiment of the present invention may be used alone or in combination of two or more.
本発明の一態様の潤滑油組成物は、成分（Ｃ）として、粘度指数向上剤を含有してもよい。粘度指数向上剤（Ｃ）を含有することで、粘度の温度依存性を小さく、省燃費性が良好な潤滑油組成物とすることができる。
なお、本発明の一態様で用いる成分（Ｃ）は、単独で用いてもよく、２種以上を併用してもよい。 <Component (C): Viscosity index improver>
The lubricating oil composition of one embodiment of the present invention may contain a viscosity index improver as component (C). By containing the viscosity index improver (C), a lubricating oil composition with low temperature dependence of viscosity and good fuel efficiency can be obtained.
Note that the component (C) used in one embodiment of the present invention may be used alone or in combination of two or more.
本発明の一態様で用いる成分（Ｃ）としては、例えば、非分散型ポリメタクリレート、分散型ポリメタクリレート、オレフィン系共重合体（例えば、エチレン－プロピレン共重合体等）、分散型オレフィン系共重合体、スチレン系共重合体（例えば、スチレン－ジエン共重合体、スチレン－イソプレン共重合体等）等の重合体が挙げられる。
本発明の一態様で用いる成分（Ｃ）は、高分子量の側鎖が出ている三叉分岐点を主鎖に数多くもつ構造を有する櫛形ポリマーであってもよく、炭素原子等の一つの原子が３本以上の鎖状高分子が結合している構造を有する星形ポリマーであってもよい。 Component (C) used in one embodiment of the present invention includes, for example, non-dispersed polymethacrylate, dispersed polymethacrylate, olefin copolymer (e.g., ethylene-propylene copolymer, etc.), dispersed olefin copolymer, etc. Examples include polymers such as polymers, styrene copolymers (eg, styrene-diene copolymers, styrene-isoprene copolymers, etc.).
Component (C) used in one embodiment of the present invention may be a comb-shaped polymer having a structure in which the main chain has many trifurcated branch points from which high-molecular-weight side chains emerge, and one atom such as a carbon atom A star-shaped polymer having a structure in which three or more chain polymers are bonded may also be used.
本発明の一態様で用いる成分（Ｃ）は、高分子量の側鎖が出ている三叉分岐点を主鎖に数多くもつ構造を有する櫛形ポリマーであってもよく、炭素原子等の一つの原子が３本以上の鎖状高分子が結合している構造を有する星形ポリマーであってもよい。 Component (C) used in one embodiment of the present invention includes, for example, non-dispersed polymethacrylate, dispersed polymethacrylate, olefin copolymer (e.g., ethylene-propylene copolymer, etc.), dispersed olefin copolymer, etc. Examples include polymers such as polymers, styrene copolymers (eg, styrene-diene copolymers, styrene-isoprene copolymers, etc.).
Component (C) used in one embodiment of the present invention may be a comb-shaped polymer having a structure in which the main chain has many trifurcated branch points from which high-molecular-weight side chains emerge, and one atom such as a carbon atom A star-shaped polymer having a structure in which three or more chain polymers are bonded may also be used.
粘度の温度依存性を小さく、省燃費性が良好な潤滑油組成物とすると共に、粘度グレードが、ＳＡＥ Ｊ３００：２０１５による粘度グレードが０Ｗ－２０である潤滑油組成物に調整する観点から、本発明の一態様で用いる成分（Ｃ）は、櫛形ポリマーと分散型ポリメタクリレートとを併用することが好ましい。
櫛形ポリマーと分散型ポリメタクリレートとの含有量比〔櫛形ポリマー／分散型ポリメタクリレート〕は、好ましくは２０／８０以上、より好ましくは４０／６０以上、より好ましくは５５／４５以上、更に好ましくは６５／３５以上、更に好ましくは７５／２５以上、より更に好ましくは８０／２０以上、特に好ましくは８５／１５以上であり、また、好ましくは９９／１以下、より好ましくは９８／２以下、更に好ましくは９７／３以下、より更に好ましくは９６／４以下、特に好ましくは９５／５以下である。 From the viewpoint of creating a lubricating oil composition with low temperature dependence of viscosity and good fuel efficiency, and adjusting the viscosity grade to 0W-20 according to SAE J300:2015, this book was developed. The component (C) used in one embodiment of the invention is preferably a combination of a comb-shaped polymer and a dispersed polymethacrylate.
The content ratio of the comb-shaped polymer and the dispersed polymethacrylate [comb-shaped polymer/dispersed polymethacrylate] is preferably 20/80 or more, more preferably 40/60 or more, more preferably 55/45 or more, and even more preferably 65. /35 or more, more preferably 75/25 or more, even more preferably 80/20 or more, particularly preferably 85/15 or more, and preferably 99/1 or less, more preferably 98/2 or less, even more preferably is 97/3 or less, more preferably 96/4 or less, particularly preferably 95/5 or less.
櫛形ポリマーと分散型ポリメタクリレートとの含有量比〔櫛形ポリマー／分散型ポリメタクリレート〕は、好ましくは２０／８０以上、より好ましくは４０／６０以上、より好ましくは５５／４５以上、更に好ましくは６５／３５以上、更に好ましくは７５／２５以上、より更に好ましくは８０／２０以上、特に好ましくは８５／１５以上であり、また、好ましくは９９／１以下、より好ましくは９８／２以下、更に好ましくは９７／３以下、より更に好ましくは９６／４以下、特に好ましくは９５／５以下である。 From the viewpoint of creating a lubricating oil composition with low temperature dependence of viscosity and good fuel efficiency, and adjusting the viscosity grade to 0W-20 according to SAE J300:2015, this book was developed. The component (C) used in one embodiment of the invention is preferably a combination of a comb-shaped polymer and a dispersed polymethacrylate.
The content ratio of the comb-shaped polymer and the dispersed polymethacrylate [comb-shaped polymer/dispersed polymethacrylate] is preferably 20/80 or more, more preferably 40/60 or more, more preferably 55/45 or more, and even more preferably 65. /35 or more, more preferably 75/25 or more, even more preferably 80/20 or more, particularly preferably 85/15 or more, and preferably 99/1 or less, more preferably 98/2 or less, even more preferably is 97/3 or less, more preferably 96/4 or less, particularly preferably 95/5 or less.
粘度の温度依存性を小さく、省燃費性が良好な潤滑油組成物とすると共に、粘度グレードが、ＳＡＥ Ｊ３００：２０１５による粘度グレードが０Ｗ－３０である潤滑油組成物に調整する観点から、本発明の一態様で用いる成分（Ｃ）は、非分散型ポリメタクリレートと分散型ポリメタクリレートとを併用することが好ましい。
非分散型ポリメタクリレートと分散型ポリメタクリレートとの含有量比〔非分散型ポリメタクリレート／分散型ポリメタクリレート〕は、好ましくは２０／８０以上、より好ましくは４０／６０以上、より好ましくは５５／４５以上、更に好ましくは６５／３５以上、更に好ましくは７５／２５以上、より更に好ましくは８０／２０以上、特に好ましくは８５／１５以上であり、また、好ましくは９９／１以下、より好ましくは９８／２以下、更に好ましくは９７／３以下、より更に好ましくは９６／４以下、特に好ましくは９５／５以下である。 From the viewpoint of creating a lubricating oil composition with low temperature dependence of viscosity and good fuel efficiency, and adjusting the viscosity grade to 0W-30 according to SAE J300:2015, this book was developed. Component (C) used in one embodiment of the invention is preferably a combination of non-dispersed polymethacrylate and dispersed polymethacrylate.
The content ratio of non-dispersed polymethacrylate and dispersed polymethacrylate [non-dispersed polymethacrylate/dispersed polymethacrylate] is preferably 20/80 or more, more preferably 40/60 or more, and more preferably 55/45. Above, more preferably 65/35 or more, still more preferably 75/25 or more, even more preferably 80/20 or more, particularly preferably 85/15 or more, and preferably 99/1 or less, more preferably 98 /2 or less, more preferably 97/3 or less, even more preferably 96/4 or less, particularly preferably 95/5 or less.
非分散型ポリメタクリレートと分散型ポリメタクリレートとの含有量比〔非分散型ポリメタクリレート／分散型ポリメタクリレート〕は、好ましくは２０／８０以上、より好ましくは４０／６０以上、より好ましくは５５／４５以上、更に好ましくは６５／３５以上、更に好ましくは７５／２５以上、より更に好ましくは８０／２０以上、特に好ましくは８５／１５以上であり、また、好ましくは９９／１以下、より好ましくは９８／２以下、更に好ましくは９７／３以下、より更に好ましくは９６／４以下、特に好ましくは９５／５以下である。 From the viewpoint of creating a lubricating oil composition with low temperature dependence of viscosity and good fuel efficiency, and adjusting the viscosity grade to 0W-30 according to SAE J300:2015, this book was developed. Component (C) used in one embodiment of the invention is preferably a combination of non-dispersed polymethacrylate and dispersed polymethacrylate.
The content ratio of non-dispersed polymethacrylate and dispersed polymethacrylate [non-dispersed polymethacrylate/dispersed polymethacrylate] is preferably 20/80 or more, more preferably 40/60 or more, and more preferably 55/45. Above, more preferably 65/35 or more, still more preferably 75/25 or more, even more preferably 80/20 or more, particularly preferably 85/15 or more, and preferably 99/1 or less, more preferably 98 /2 or less, more preferably 97/3 or less, even more preferably 96/4 or less, particularly preferably 95/5 or less.
本発明の一態様で用いる粘度指数向上剤の重量平均分子量（Ｍｗ）は、粘度の温度依存性を小さく、省燃費性が良好な潤滑油組成物とする観点から、好ましくは１万以上、より好ましくは３万以上、より好ましくは５万以上、更に好ましくは７万以上、更に好ましくは１０万以上、より更に好ましくは１２万以上、特に好ましくは１５万以上であり、さらに、１７万以上、２０万以上、２５万以上、又は３０万以上としてもよく、また、デポジットの発生を抑制し得る潤滑油組成物とする観点から、１００万以下、９０万以下、８０万以下、７０万以下、６５万以下、６０万以下、５５万以下、又は５０万以下としてもよい。
The weight average molecular weight (Mw) of the viscosity index improver used in one aspect of the present invention is preferably 10,000 or more, and more Preferably 30,000 or more, more preferably 50,000 or more, still more preferably 70,000 or more, still more preferably 100,000 or more, even more preferably 120,000 or more, particularly preferably 150,000 or more, furthermore 170,000 or more, It may be 200,000 or more, 250,000 or more, or 300,000 or more, and from the viewpoint of providing a lubricating oil composition that can suppress the generation of deposits, it may be 1,000,000 or less, 900,000 or less, 800,000 or less, 700,000 or less, It may be 650,000 or less, 600,000 or less, 550,000 or less, or 500,000 or less.
本発明の一態様の潤滑油組成物において、粘度の温度依存性を小さく、省燃費性が良好な潤滑油組成物とする観点から、成分（Ｃ）の樹脂分換算での含有量は、当該潤滑油組成物の全量（１００質量％）基準で、好ましくは０．０１質量％以上、より好ましくは０．１０質量％以上、より好ましくは０．３０質量％以上、より好ましくは０．５０質量％以上、更に好ましくは０．７０質量％以上、更に好ましくは０．９０質量％以上、より更に好ましくは１．１０質量％以上、特に好ましくは１．３０質量％以上である。
また、デポジットの発生を抑制し得る潤滑油組成物とする観点から、成分（Ｃ）の樹脂分換算での含有量は、当該潤滑油組成物の全量（１００質量％）基準で、好ましくは４．０質量％以下、より好ましくは３．５質量％以下、より好ましくは３．０質量％以下、更に好ましくは２．５質量％以下、より更に好ましくは２．２質量％以下、特に好ましくは２．０質量％以下である。 In the lubricating oil composition of one embodiment of the present invention, from the viewpoint of providing a lubricating oil composition with low temperature dependence of viscosity and good fuel efficiency, the content of component (C) in terms of resin content is Based on the total amount (100% by mass) of the lubricating oil composition, preferably 0.01% by mass or more, more preferably 0.10% by mass or more, more preferably 0.30% by mass or more, more preferably 0.50% by mass. % or more, more preferably 0.70% by mass or more, still more preferably 0.90% by mass or more, even more preferably 1.10% by mass or more, particularly preferably 1.30% by mass or more.
In addition, from the viewpoint of producing a lubricating oil composition that can suppress the generation of deposits, the content of component (C) in terms of resin content is preferably 4% based on the total amount (100% by mass) of the lubricating oil composition. .0 mass% or less, more preferably 3.5 mass% or less, more preferably 3.0 mass% or less, even more preferably 2.5 mass% or less, even more preferably 2.2 mass% or less, particularly preferably It is 2.0% by mass or less.
また、デポジットの発生を抑制し得る潤滑油組成物とする観点から、成分（Ｃ）の樹脂分換算での含有量は、当該潤滑油組成物の全量（１００質量％）基準で、好ましくは４．０質量％以下、より好ましくは３．５質量％以下、より好ましくは３．０質量％以下、更に好ましくは２．５質量％以下、より更に好ましくは２．２質量％以下、特に好ましくは２．０質量％以下である。 In the lubricating oil composition of one embodiment of the present invention, from the viewpoint of providing a lubricating oil composition with low temperature dependence of viscosity and good fuel efficiency, the content of component (C) in terms of resin content is Based on the total amount (100% by mass) of the lubricating oil composition, preferably 0.01% by mass or more, more preferably 0.10% by mass or more, more preferably 0.30% by mass or more, more preferably 0.50% by mass. % or more, more preferably 0.70% by mass or more, still more preferably 0.90% by mass or more, even more preferably 1.10% by mass or more, particularly preferably 1.30% by mass or more.
In addition, from the viewpoint of producing a lubricating oil composition that can suppress the generation of deposits, the content of component (C) in terms of resin content is preferably 4% based on the total amount (100% by mass) of the lubricating oil composition. .0 mass% or less, more preferably 3.5 mass% or less, more preferably 3.0 mass% or less, even more preferably 2.5 mass% or less, even more preferably 2.2 mass% or less, particularly preferably It is 2.0% by mass or less.
なお、本発明の一態様で用いる成分（Ｃ）や後述の流動点降下剤、消泡剤は、通常はハンドリング性や成分（Ａ）との溶解性を考慮し、鉱油や合成油等の希釈油により溶解された溶液の形態で市販されていることが多い。本明細書において、成分（Ｃ）、流動点降下剤、及び消泡剤の含有量は、希釈油を除外した固形分換算での含有量を意味する。
Note that the component (C) used in one embodiment of the present invention, the pour point depressant, and the antifoaming agent described below are usually diluted with mineral oil, synthetic oil, etc. in consideration of handling properties and solubility with component (A). It is often commercially available in the form of a solution dissolved in oil. In this specification, the content of component (C), pour point depressant, and antifoaming agent means the content in terms of solid content excluding diluent oil.
＜潤滑油用添加剤＞
本発明の一態様の潤滑油組成物は、本発明の効果を損なわない範囲で、必要に応じて、更に成分（Ｂ）～（Ｃ）以外の他の潤滑油用添加剤を含有してもよい。
このような潤滑油用添加剤としては、例えば、流動点降下剤、酸化防止剤、摩擦調整剤、耐摩耗剤、極圧剤、金属不活性化剤、無灰分散剤、防錆剤、消泡剤等が挙げられる。
これらの潤滑油用添加剤は、それぞれ、単独で用いてもよく、２種以上を併用してもよい。 <Additives for lubricating oil>
The lubricating oil composition of one embodiment of the present invention may further contain lubricating oil additives other than components (B) to (C), as necessary, as long as the effects of the present invention are not impaired. good.
Examples of such lubricating oil additives include pour point depressants, antioxidants, friction modifiers, antiwear agents, extreme pressure agents, metal deactivators, ashless dispersants, rust inhibitors, and antifoaming agents. agents, etc.
These lubricating oil additives may be used alone or in combination of two or more.
本発明の一態様の潤滑油組成物は、本発明の効果を損なわない範囲で、必要に応じて、更に成分（Ｂ）～（Ｃ）以外の他の潤滑油用添加剤を含有してもよい。
このような潤滑油用添加剤としては、例えば、流動点降下剤、酸化防止剤、摩擦調整剤、耐摩耗剤、極圧剤、金属不活性化剤、無灰分散剤、防錆剤、消泡剤等が挙げられる。
これらの潤滑油用添加剤は、それぞれ、単独で用いてもよく、２種以上を併用してもよい。 <Additives for lubricating oil>
The lubricating oil composition of one embodiment of the present invention may further contain lubricating oil additives other than components (B) to (C), as necessary, as long as the effects of the present invention are not impaired. good.
Examples of such lubricating oil additives include pour point depressants, antioxidants, friction modifiers, antiwear agents, extreme pressure agents, metal deactivators, ashless dispersants, rust inhibitors, and antifoaming agents. agents, etc.
These lubricating oil additives may be used alone or in combination of two or more.
これらの潤滑油用添加剤のそれぞれの含有量は、本発明の効果を損なわない範囲内で、適宜調整することができるが、潤滑油組成物の全量（１００質量％）基準で、それぞれの添加剤ごとに独立して、通常０．００１～１５質量％、好ましくは０．００５～１０質量％、より好ましくは０．０１～５質量％である。
The content of each of these lubricating oil additives can be adjusted as appropriate within a range that does not impair the effects of the present invention. The amount for each agent is usually 0.001 to 15% by weight, preferably 0.005 to 10% by weight, and more preferably 0.01 to 5% by weight.
［流動点降下剤］
本発明の一態様の潤滑油組成物は、さらに流動点降下剤を含有してもよい。流動点降下剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる流動点降下剤としては、例えば、エチレン－酢酸ビニル共重合体、塩素化パラフィンとナフタレンとの縮合物、塩素化パラフィンとフェノールとの縮合物、ポリメタクリレート、ポリアルキルスチレン等が挙げられる。
本発明の一態様で用いる流動点降下剤の質量平均分子量（Ｍｗ）は、５，０００以上、７，０００以上、１０，０００以上、１５，０００以上、２０，０００以上、２５，０００以上、３０，０００以上、３５，０００以上、４０，０００以上、４５，０００以上、５０，０００以上、５５，０００以上、又は６０，０００以上としてもよく、また、１５０，０００以下、１２０，０００以下、１００，０００以下、９０，０００以下、又は８０，０００以下としてもよい。 [Pour point depressant]
The lubricating oil composition of one aspect of the present invention may further contain a pour point depressant. The pour point depressants may be used alone or in combination of two or more.
Examples of pour point depressants used in one embodiment of the present invention include ethylene-vinyl acetate copolymers, condensates of chlorinated paraffins and naphthalene, condensates of chlorinated paraffins and phenols, polymethacrylates, and polyalkylstyrenes. etc.
The mass average molecular weight (Mw) of the pour point depressant used in one aspect of the present invention is 5,000 or more, 7,000 or more, 10,000 or more, 15,000 or more, 20,000 or more, 25,000 or more, 30,000 or more, 35,000 or more, 40,000 or more, 45,000 or more, 50,000 or more, 55,000 or more, or 60,000 or more, and 150,000 or less, 120,000 or less , 100,000 or less, 90,000 or less, or 80,000 or less.
本発明の一態様の潤滑油組成物は、さらに流動点降下剤を含有してもよい。流動点降下剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる流動点降下剤としては、例えば、エチレン－酢酸ビニル共重合体、塩素化パラフィンとナフタレンとの縮合物、塩素化パラフィンとフェノールとの縮合物、ポリメタクリレート、ポリアルキルスチレン等が挙げられる。
本発明の一態様で用いる流動点降下剤の質量平均分子量（Ｍｗ）は、５，０００以上、７，０００以上、１０，０００以上、１５，０００以上、２０，０００以上、２５，０００以上、３０，０００以上、３５，０００以上、４０，０００以上、４５，０００以上、５０，０００以上、５５，０００以上、又は６０，０００以上としてもよく、また、１５０，０００以下、１２０，０００以下、１００，０００以下、９０，０００以下、又は８０，０００以下としてもよい。 [Pour point depressant]
The lubricating oil composition of one aspect of the present invention may further contain a pour point depressant. The pour point depressants may be used alone or in combination of two or more.
Examples of pour point depressants used in one embodiment of the present invention include ethylene-vinyl acetate copolymers, condensates of chlorinated paraffins and naphthalene, condensates of chlorinated paraffins and phenols, polymethacrylates, and polyalkylstyrenes. etc.
The mass average molecular weight (Mw) of the pour point depressant used in one aspect of the present invention is 5,000 or more, 7,000 or more, 10,000 or more, 15,000 or more, 20,000 or more, 25,000 or more, 30,000 or more, 35,000 or more, 40,000 or more, 45,000 or more, 50,000 or more, 55,000 or more, or 60,000 or more, and 150,000 or less, 120,000 or less , 100,000 or less, 90,000 or less, or 80,000 or less.
［酸化防止剤］
本発明の一態様の潤滑油組成物は、さらに酸化防止剤を含有してもよい。酸化防止剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる酸化防止剤としては、例えば、アルキル化ジフェニルアミン、フェニルナフチルアミン、アルキル化フェニルナフチルアミン等のアミン系酸化防止剤；２、６－ジ－ｔ－ブチルフェノール、４，４’－メチレンビス（２，６ージーｔーブチルフェノール）、イソオクチル－３－（３，５－ジ－ｔ－ブチル－４－ヒドロキシフェニル）プロピオネート、ｎ－オクタデシル－３－（３，５－ジ－ｔ－ブチル－４－ヒドロキシフェニル）プロピオネート等のフェノール系酸化防止剤；フェノチアジン、ジオクタデシルサルファイド、ジラウリル－３，３'－チオジプロピオネート、２－メルカプトベンゾイミダゾール等の硫黄系酸化防止剤；等が挙げられる。 [Antioxidant]
The lubricating oil composition of one embodiment of the present invention may further contain an antioxidant. The antioxidants may be used alone or in combination of two 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; 2,6-di-t-butylphenol, and 4,4'-methylenebis (2,6-di-t-butylphenol), isooctyl-3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate, n-octadecyl-3-(3,5-di-t-butyl-4 Examples include phenolic antioxidants such as -hydroxyphenyl)propionate; sulfur-based antioxidants such as phenothiazine, dioctadecyl sulfide, dilauryl-3,3'-thiodipropionate, and 2-mercaptobenzimidazole; and the like.
本発明の一態様の潤滑油組成物は、さらに酸化防止剤を含有してもよい。酸化防止剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる酸化防止剤としては、例えば、アルキル化ジフェニルアミン、フェニルナフチルアミン、アルキル化フェニルナフチルアミン等のアミン系酸化防止剤；２、６－ジ－ｔ－ブチルフェノール、４，４’－メチレンビス（２，６ージーｔーブチルフェノール）、イソオクチル－３－（３，５－ジ－ｔ－ブチル－４－ヒドロキシフェニル）プロピオネート、ｎ－オクタデシル－３－（３，５－ジ－ｔ－ブチル－４－ヒドロキシフェニル）プロピオネート等のフェノール系酸化防止剤；フェノチアジン、ジオクタデシルサルファイド、ジラウリル－３，３'－チオジプロピオネート、２－メルカプトベンゾイミダゾール等の硫黄系酸化防止剤；等が挙げられる。 [Antioxidant]
The lubricating oil composition of one embodiment of the present invention may further contain an antioxidant. The antioxidants may be used alone or in combination of two 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; 2,6-di-t-butylphenol, and 4,4'-methylenebis (2,6-di-t-butylphenol), isooctyl-3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate, n-octadecyl-3-(3,5-di-t-butyl-4 Examples include phenolic antioxidants such as -hydroxyphenyl)propionate; sulfur-based antioxidants such as phenothiazine, dioctadecyl sulfide, dilauryl-3,3'-thiodipropionate, and 2-mercaptobenzimidazole; and the like.
［摩擦調整剤及び耐摩耗剤］
本発明の一態様の潤滑油組成物は、さらに摩擦調整剤又は耐摩耗剤を含有してもよい。摩擦調整剤又は耐摩耗剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる摩擦調整剤及び耐摩耗剤としては、例えば、摩擦調整剤及び耐摩耗剤としては、例えば、硫化オレフィン、ジアルキルポリスルフィド、ジアリールアルキルポリスルフィド、ジアリールポリスルフィド等の硫黄系化合物；リン酸エステル、チオリン酸エステル、亜リン酸エステル、アルキルハイドロゲンホスファイト、リン酸エステルアミン塩、亜リン酸エステルアミン塩等のリン系化合物；ジチオカルバミン酸モリブデン（ＭｏＤＴＣ）、ジチオリン酸モリブデン（ＭｏＤＴＰ）、モリブテン酸のアミン塩等の有機モリブデン系化合物；ジチオリン酸亜鉛（ＺｎＤＴＰ）、ジチオカルバミン酸亜鉛（ＺｎＤＴＣ）等の有機亜鉛系化合物；アミン化合物、脂肪酸エステル、脂肪酸アミド、脂肪酸、脂肪族アルコール、脂肪族エーテル、ウレア系化合物、ヒドラジド系化合物等の無灰系摩擦調整剤；等が挙げられる。 [Friction modifier and anti-wear agent]
The lubricating oil composition of one embodiment of the present invention may further contain a friction modifier or an antiwear agent. The friction modifier or anti-wear agent may be used alone or in combination of two or more.
Examples of friction modifiers and antiwear agents used in one embodiment of the present invention include sulfur-based compounds such as sulfurized olefins, dialkyl polysulfides, diarylalkyl polysulfides, and diaryl polysulfides; Phosphorous compounds such as acid esters, thiophosphate esters, phosphite esters, alkyl hydrogen phosphites, phosphate ester amine salts, phosphite ester amine salts; molybdenum dithiocarbamate (MoDTC), molybdenum dithiophosphate (MoDTP), molybdenum Organic molybdenum compounds such as amine salts of acids; organic zinc compounds such as zinc dithiophosphate (ZnDTP) and zinc dithiocarbamate (ZnDTC); amine compounds, fatty acid esters, fatty acid amides, fatty acids, fatty alcohols, aliphatic ethers, Examples include ashless friction modifiers such as urea compounds and hydrazide compounds.
本発明の一態様の潤滑油組成物は、さらに摩擦調整剤又は耐摩耗剤を含有してもよい。摩擦調整剤又は耐摩耗剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる摩擦調整剤及び耐摩耗剤としては、例えば、摩擦調整剤及び耐摩耗剤としては、例えば、硫化オレフィン、ジアルキルポリスルフィド、ジアリールアルキルポリスルフィド、ジアリールポリスルフィド等の硫黄系化合物；リン酸エステル、チオリン酸エステル、亜リン酸エステル、アルキルハイドロゲンホスファイト、リン酸エステルアミン塩、亜リン酸エステルアミン塩等のリン系化合物；ジチオカルバミン酸モリブデン（ＭｏＤＴＣ）、ジチオリン酸モリブデン（ＭｏＤＴＰ）、モリブテン酸のアミン塩等の有機モリブデン系化合物；ジチオリン酸亜鉛（ＺｎＤＴＰ）、ジチオカルバミン酸亜鉛（ＺｎＤＴＣ）等の有機亜鉛系化合物；アミン化合物、脂肪酸エステル、脂肪酸アミド、脂肪酸、脂肪族アルコール、脂肪族エーテル、ウレア系化合物、ヒドラジド系化合物等の無灰系摩擦調整剤；等が挙げられる。 [Friction modifier and anti-wear agent]
The lubricating oil composition of one embodiment of the present invention may further contain a friction modifier or an antiwear agent. The friction modifier or anti-wear agent may be used alone or in combination of two or more.
Examples of friction modifiers and antiwear agents used in one embodiment of the present invention include sulfur-based compounds such as sulfurized olefins, dialkyl polysulfides, diarylalkyl polysulfides, and diaryl polysulfides; Phosphorous compounds such as acid esters, thiophosphate esters, phosphite esters, alkyl hydrogen phosphites, phosphate ester amine salts, phosphite ester amine salts; molybdenum dithiocarbamate (MoDTC), molybdenum dithiophosphate (MoDTP), molybdenum Organic molybdenum compounds such as amine salts of acids; organic zinc compounds such as zinc dithiophosphate (ZnDTP) and zinc dithiocarbamate (ZnDTC); amine compounds, fatty acid esters, fatty acid amides, fatty acids, fatty alcohols, aliphatic ethers, Examples include ashless friction modifiers such as urea compounds and hydrazide compounds.
［極圧剤］
本発明の一態様の潤滑油組成物は、さらに極圧剤を含有してもよい。極圧剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる極圧剤としては、例えば、硫化オレフィン、ジアルキルポリスルフィド、ジアリールアルキルポリスルフィド、ジアリールポリスルフィド等の硫黄系化合物、リン酸エステル、チオリン酸エステル、亜リン酸エステル、アルキルハイドロゲンホスファイト、リン酸エステルアミン塩、亜リン酸エステルアミン塩等のリン系化合物等が挙げられる。 [Extreme pressure agent]
The lubricating oil composition of one embodiment of the present invention may further contain an extreme pressure agent. The extreme pressure agent may be used alone or in combination of two or more.
Examples of the extreme pressure agent used in one embodiment of the present invention include sulfur-based compounds such as sulfurized olefins, dialkyl polysulfides, diarylalkyl polysulfides, and diaryl polysulfides, phosphoric acid esters, thiophosphoric acid esters, phosphorous esters, and alkyl hydrogen phosphites. , phosphoric acid ester amine salts, phosphorous acid ester amine salts, and the like.
本発明の一態様の潤滑油組成物は、さらに極圧剤を含有してもよい。極圧剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる極圧剤としては、例えば、硫化オレフィン、ジアルキルポリスルフィド、ジアリールアルキルポリスルフィド、ジアリールポリスルフィド等の硫黄系化合物、リン酸エステル、チオリン酸エステル、亜リン酸エステル、アルキルハイドロゲンホスファイト、リン酸エステルアミン塩、亜リン酸エステルアミン塩等のリン系化合物等が挙げられる。 [Extreme pressure agent]
The lubricating oil composition of one embodiment of the present invention may further contain an extreme pressure agent. The extreme pressure agent may be used alone or in combination of two or more.
Examples of the extreme pressure agent used in one embodiment of the present invention include sulfur-based compounds such as sulfurized olefins, dialkyl polysulfides, diarylalkyl polysulfides, and diaryl polysulfides, phosphoric acid esters, thiophosphoric acid esters, phosphorous esters, and alkyl hydrogen phosphites. , phosphoric acid ester amine salts, phosphorous acid ester amine salts, and the like.
［金属不活性化剤］
本発明の一態様の潤滑油組成物は、さらに金属不活性化剤を含有してもよい。金属不活性化剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる金属不活性化剤としては、例えば、ベンゾトリアゾール、トリアゾール誘導体、ベンゾトリアゾール誘導体、チアジアゾール誘導体等が挙げられる。 [Metal deactivator]
The lubricating oil composition of one embodiment of the present invention may further contain a metal deactivator. The metal deactivators may be used alone or in combination of two or more.
Examples of the metal deactivator used in one embodiment of the present invention include benzotriazole, triazole derivatives, benzotriazole derivatives, thiadiazole derivatives, and the like.
本発明の一態様の潤滑油組成物は、さらに金属不活性化剤を含有してもよい。金属不活性化剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる金属不活性化剤としては、例えば、ベンゾトリアゾール、トリアゾール誘導体、ベンゾトリアゾール誘導体、チアジアゾール誘導体等が挙げられる。 [Metal deactivator]
The lubricating oil composition of one embodiment of the present invention may further contain a metal deactivator. The metal deactivators may be used alone or in combination of two or more.
Examples of the metal deactivator used in one embodiment of the present invention include benzotriazole, triazole derivatives, benzotriazole derivatives, thiadiazole derivatives, and the like.
［無灰系分散剤］
本発明の一態様の潤滑油組成物は、分散性を良好とする観点から、さらに無灰系分散剤を含有してもよい。無灰系分散剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる無灰系分散剤としては、アルケニルコハク酸イミドが好ましく、例えば、下記一般式（ｆ－１）で表されるアルケニルコハク酸ビスイミド、下記一般式（ｆ－２）で表されるアルケニルコハク酸モノイミド等が挙げられる。 [Ashless dispersant]
The lubricating oil composition of one embodiment of the present invention may further contain an ashless dispersant from the viewpoint of improving dispersibility. The ashless dispersants may be used alone or in combination of two or more.
The ashless dispersant used in one aspect of the present invention is preferably an alkenylsuccinimide, such as alkenylsuccinimide represented by the following general formula (f-1), or alkenylsuccinimide represented by the following general formula (f-2). Examples include the alkenylsuccinic acid monoimides shown below.
本発明の一態様の潤滑油組成物は、分散性を良好とする観点から、さらに無灰系分散剤を含有してもよい。無灰系分散剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる無灰系分散剤としては、アルケニルコハク酸イミドが好ましく、例えば、下記一般式（ｆ－１）で表されるアルケニルコハク酸ビスイミド、下記一般式（ｆ－２）で表されるアルケニルコハク酸モノイミド等が挙げられる。 [Ashless dispersant]
The lubricating oil composition of one embodiment of the present invention may further contain an ashless dispersant from the viewpoint of improving dispersibility. The ashless dispersants may be used alone or in combination of two or more.
The ashless dispersant used in one aspect of the present invention is preferably an alkenylsuccinimide, such as alkenylsuccinimide represented by the following general formula (f-1), or alkenylsuccinimide represented by the following general formula (f-2). Examples include the alkenylsuccinic acid monoimides shown below.
上記一般式（ｆ－１）及び（ｆ－２）中、Ｒｆ１、Ｒｆ２及びＲｆ３は、それぞれ独立に、質量平均分子量（Ｍｗ）が５００～３０００（好ましくは９００～２５００）のアルケニル基である。
Ｒｆ１、Ｒｆ２及びＲｆ３として選択し得る、前記アルケニル基としては、例えば、ポリブテニル基、ポリイソブテニル基、エチレン－プロピレン共重合体等が挙げられ、これらの中でも、ポリブテニル基又はポリイソブテニル基が好ましい。
Ａｆ１、Ａｆ２及びＡｆ３は、それぞれ独立に、炭素数２～５のアルキレン基である。
ｘ１は０～１０の整数であり、好ましくは１～４の整数、より好ましくは２又は３である。
ｘ２は１～１０の整数であり、好ましくは２～５の整数、より好ましくは３又は４である。 In the above general formulas (f-1) and (f-2), R f1 , R f2 and R f3 are each independently an alkenyl group having a mass average molecular weight (Mw) of 500 to 3000 (preferably 900 to 2500). It is.
Examples of the alkenyl group that can be selected as R f1 , R f2 and R f3 include a polybutenyl group, a polyisobutenyl group, an ethylene-propylene copolymer, and among these, a polybutenyl group or a polyisobutenyl group is preferred.
A f1 , A f2 and A f3 are each independently an alkylene group having 2 to 5 carbon atoms.
x1 is an integer of 0 to 10, preferably an integer of 1 to 4, more preferably 2 or 3.
x2 is an integer of 1 to 10, preferably an integer of 2 to 5, more preferably 3 or 4.
Ｒｆ１、Ｒｆ２及びＲｆ３として選択し得る、前記アルケニル基としては、例えば、ポリブテニル基、ポリイソブテニル基、エチレン－プロピレン共重合体等が挙げられ、これらの中でも、ポリブテニル基又はポリイソブテニル基が好ましい。
Ａｆ１、Ａｆ２及びＡｆ３は、それぞれ独立に、炭素数２～５のアルキレン基である。
ｘ１は０～１０の整数であり、好ましくは１～４の整数、より好ましくは２又は３である。
ｘ２は１～１０の整数であり、好ましくは２～５の整数、より好ましくは３又は４である。 In the above general formulas (f-1) and (f-2), R f1 , R f2 and R f3 are each independently an alkenyl group having a mass average molecular weight (Mw) of 500 to 3000 (preferably 900 to 2500). It is.
Examples of the alkenyl group that can be selected as R f1 , R f2 and R f3 include a polybutenyl group, a polyisobutenyl group, an ethylene-propylene copolymer, and among these, a polybutenyl group or a polyisobutenyl group is preferred.
A f1 , A f2 and A f3 are each independently an alkylene group having 2 to 5 carbon atoms.
x1 is an integer of 0 to 10, preferably an integer of 1 to 4, more preferably 2 or 3.
x2 is an integer of 1 to 10, preferably an integer of 2 to 5, more preferably 3 or 4.
なお、前記一般式（ｆ－１）又は（ｆ－２）で表される化合物は、ホウ素化合物、アルコール、アルデヒド、ケトン、アルキルフェノール、環状カーボネート、エポキシ化合物、及び有機酸等から選ばれる１種以上と反応させた、変性アルケニルコハク酸イミドであってもよい。
The compound represented by the general formula (f-1) or (f-2) is one or more selected from boron compounds, alcohols, aldehydes, ketones, alkylphenols, cyclic carbonates, epoxy compounds, organic acids, etc. It may also be a modified alkenylsuccinimide reacted with.
［防錆剤］
本発明の一態様の潤滑油組成物は、さらに防錆剤を含有してもよい。防錆剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる防錆剤としては、例えば、脂肪酸、アルケニルコハク酸ハーフエステル、脂肪酸セッケン、アルキルスルホン酸塩、多価アルコール脂肪酸エステル、脂肪酸アミン、酸化パラフィン、アルキルポリオキシエチレンエーテル等が挙げられる。 [anti-rust]
The lubricating oil composition of one embodiment of the present invention may further contain a rust inhibitor. The rust inhibitors may be used alone or in combination of two or more.
Examples of the rust preventive agent used in one embodiment of the present invention include fatty acids, alkenyl succinic acid half esters, fatty acid soaps, alkyl sulfonates, polyhydric alcohol fatty acid esters, fatty acid amines, oxidized paraffins, alkyl polyoxyethylene ethers, and the like. Can be mentioned.
本発明の一態様の潤滑油組成物は、さらに防錆剤を含有してもよい。防錆剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる防錆剤としては、例えば、脂肪酸、アルケニルコハク酸ハーフエステル、脂肪酸セッケン、アルキルスルホン酸塩、多価アルコール脂肪酸エステル、脂肪酸アミン、酸化パラフィン、アルキルポリオキシエチレンエーテル等が挙げられる。 [anti-rust]
The lubricating oil composition of one embodiment of the present invention may further contain a rust inhibitor. The rust inhibitors may be used alone or in combination of two or more.
Examples of the rust preventive agent used in one embodiment of the present invention include fatty acids, alkenyl succinic acid half esters, fatty acid soaps, alkyl sulfonates, polyhydric alcohol fatty acid esters, fatty acid amines, oxidized paraffins, alkyl polyoxyethylene ethers, and the like. Can be mentioned.
［消泡剤］
本発明の一態様の潤滑油組成物は、さらに消泡剤を含有してもよい。消泡剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる消泡剤としては、例えば、アルキルシリコーン系消泡剤、フルオロシリコーン系消泡剤、フルオロアルキルエーテル系消泡剤等が挙げられる。 [Defoaming agent]
The lubricating oil composition of one embodiment of the present invention may further contain an antifoaming agent. Antifoaming agents may be used alone or in combination of two or more.
Examples of the antifoaming agent used in one embodiment of the present invention include alkyl silicone antifoaming agents, fluorosilicone antifoaming agents, fluoroalkyl ether antifoaming agents, and the like.
本発明の一態様の潤滑油組成物は、さらに消泡剤を含有してもよい。消泡剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる消泡剤としては、例えば、アルキルシリコーン系消泡剤、フルオロシリコーン系消泡剤、フルオロアルキルエーテル系消泡剤等が挙げられる。 [Defoaming agent]
The lubricating oil composition of one embodiment of the present invention may further contain an antifoaming agent. Antifoaming agents may be used alone or in combination of two or more.
Examples of the antifoaming agent used in one embodiment of the present invention include alkyl silicone antifoaming agents, fluorosilicone antifoaming agents, fluoroalkyl ether antifoaming agents, and the like.
＜潤滑油組成物の製造方法＞
本発明の一態様の潤滑油組成物の製造方法としては、特に制限はないが、生産性の観点から、基油（Ａ）に、必要に応じて、成分（Ｂ）及び（Ｃ）、並びに、他の潤滑油用添加剤を配合する工程を有する、方法であることが好ましい。 <Method for producing lubricating oil composition>
The method for producing the lubricating oil composition of one embodiment of the present invention is not particularly limited, but from the viewpoint of productivity, components (B) and (C) are added to the base oil (A) as necessary. The method preferably includes the step of blending other lubricating oil additives.
本発明の一態様の潤滑油組成物の製造方法としては、特に制限はないが、生産性の観点から、基油（Ａ）に、必要に応じて、成分（Ｂ）及び（Ｃ）、並びに、他の潤滑油用添加剤を配合する工程を有する、方法であることが好ましい。 <Method for producing lubricating oil composition>
The method for producing the lubricating oil composition of one embodiment of the present invention is not particularly limited, but from the viewpoint of productivity, components (B) and (C) are added to the base oil (A) as necessary. The method preferably includes the step of blending other lubricating oil additives.
〔潤滑油組成物の性状〕
本発明の一態様の潤滑油組成物の４０℃における動粘度は、省燃費性をより良好とした潤滑油組成物とする観点から、好ましくは５０．０ｍｍ２／ｓ以下、より好ましくは４７．０ｍｍ２／ｓ以下、更に好ましくは４５．０ｍｍ２／ｓ以下であり、また、好ましくは５．０ｍｍ２／ｓ以上、より好ましくは１０．０ｍｍ２／ｓ以上、更に好ましくは１５．０ｍｍ２／ｓ以上、より更に好ましくは２０．０ｍｍ２／ｓ以上、特に好ましくは２５．０ｍｍ２／ｓ以上である。 [Properties of lubricating oil composition]
The kinematic viscosity at 40° C. of the lubricating oil composition of one embodiment of the present invention is preferably 50.0 mm 2 /s or less, more preferably 47.0 mm 2 /s or less, from the viewpoint of providing a lubricating oil composition with better fuel efficiency. 0 mm 2 /s or less, more preferably 45.0 mm 2 /s or less, and preferably 5.0 mm 2 /s or more, more preferably 10.0 mm 2 /s or more, even more preferably 15.0 mm 2 / s. s or more, more preferably 20.0 mm 2 /s or more, particularly preferably 25.0 mm 2 /s or more.
本発明の一態様の潤滑油組成物の４０℃における動粘度は、省燃費性をより良好とした潤滑油組成物とする観点から、好ましくは５０．０ｍｍ２／ｓ以下、より好ましくは４７．０ｍｍ２／ｓ以下、更に好ましくは４５．０ｍｍ２／ｓ以下であり、また、好ましくは５．０ｍｍ２／ｓ以上、より好ましくは１０．０ｍｍ２／ｓ以上、更に好ましくは１５．０ｍｍ２／ｓ以上、より更に好ましくは２０．０ｍｍ２／ｓ以上、特に好ましくは２５．０ｍｍ２／ｓ以上である。 [Properties of lubricating oil composition]
The kinematic viscosity at 40° C. of the lubricating oil composition of one embodiment of the present invention is preferably 50.0 mm 2 /s or less, more preferably 47.0 mm 2 /s or less, from the viewpoint of providing a lubricating oil composition with better fuel efficiency. 0 mm 2 /s or less, more preferably 45.0 mm 2 /s or less, and preferably 5.0 mm 2 /s or more, more preferably 10.0 mm 2 /s or more, even more preferably 15.0 mm 2 / s. s or more, more preferably 20.0 mm 2 /s or more, particularly preferably 25.0 mm 2 /s or more.
本発明の一態様の潤滑油組成物の１００℃における動粘度は、省燃費性をより良好とした潤滑油組成物とする観点から、好ましくは１５．０ｍｍ２／ｓ以下、より好ましくは１３．０ｍｍ２／ｓ以下、更に好ましくは１１．０ｍｍ２／ｓ以下であり、また、好ましくは３．０ｍｍ２／ｓ以上、より好ましくは４．０ｍｍ２／ｓ以上、更に好ましくは５．０ｍｍ２／ｓ以上である。
The kinematic viscosity at 100° C. of the lubricating oil composition of one embodiment of the present invention is preferably 15.0 mm 2 /s or less, more preferably 13.0 mm 2 /s or less, from the viewpoint of providing a lubricating oil composition with better fuel efficiency. 0 mm 2 /s or less, more preferably 11.0 mm 2 /s or less, preferably 3.0 mm 2 /s or more, more preferably 4.0 mm 2 /s or more, even more preferably 5.0 mm 2 / s. s or more.
本発明の一態様の潤滑油組成物の粘度指数は、好ましくは１３０以上、より好ましくは１４０以上、より好ましくは１５０以上、更に好ましくは１６０以上、より更に好ましくは１７０以上、特に好ましくは１８０以上である。
The viscosity index of the lubricating oil composition of one aspect of the present invention is preferably 130 or more, more preferably 140 or more, more preferably 150 or more, even more preferably 160 or more, even more preferably 170 or more, and particularly preferably 180 or more. It is.
本発明の一態様の潤滑油組成物の粘度グレードは、ＳＡＥ Ｊ３００：２０１５による分類で、０Ｗ－２０～０Ｗ－３０としてもよい。
The viscosity grade of the lubricating oil composition of one embodiment of the present invention may be 0W-20 to 0W-30 according to SAE J300:2015.
本発明の一態様の潤滑油組成物が、ＳＡＥ Ｊ３００：２０１５による粘度グレードが０Ｗ－２０である場合、当該潤滑油組成物の４０℃における動粘度は、省燃費性をより良好とした潤滑油組成物とする観点から、好ましくは４０．０ｍｍ２／ｓ以下、より好ましくは３７．０ｍｍ２／ｓ以下、更に好ましくは３５．０ｍｍ２／ｓ以下であり、また、好ましくは２２．０ｍｍ２／ｓ以上、より好ましくは２５．０ｍｍ２／ｓ以上、更に好ましくは２７．０ｍｍ２／ｓ以上である。
When the lubricating oil composition of one embodiment of the present invention has a viscosity grade of 0W-20 according to SAE J300:2015, the kinematic viscosity at 40°C of the lubricating oil composition is a lubricating oil with better fuel efficiency. From the viewpoint of forming a composition, it is preferably 40.0 mm 2 /s or less, more preferably 37.0 mm 2 /s or less, even more preferably 35.0 mm 2 /s or less, and preferably 22.0 mm 2 /s. s or more, more preferably 25.0 mm 2 /s or more, still more preferably 27.0 mm 2 /s or more.
本発明の一態様の潤滑油組成物が、ＳＡＥ Ｊ３００：２０１５による粘度グレードが０Ｗ－２０である場合、当該潤滑油組成物の１００℃における動粘度は、省燃費性をより良好とした潤滑油組成物とする観点から、好ましくは８．０ｍｍ２／ｓ以下、より好ましくは７．７ｍｍ２／ｓ以下、更に好ましくは７．５ｍｍ２／ｓ以下であり、また、好ましくは５．５ｍｍ２／ｓ以上、より好ましくは６．０ｍｍ２／ｓ以上、更に好ましくは６．５ｍｍ２／ｓ以上である。
When the lubricating oil composition of one embodiment of the present invention has a viscosity grade of 0W-20 according to SAE J300:2015, the kinematic viscosity at 100°C of the lubricating oil composition is higher than that of a lubricating oil with better fuel efficiency. From the viewpoint of forming a composition, it is preferably 8.0 mm 2 /s or less, more preferably 7.7 mm 2 /s or less, even more preferably 7.5 mm 2 /s or less, and preferably 5.5 mm 2 /s. s or more, more preferably 6.0 mm 2 /s or more, still more preferably 6.5 mm 2 /s or more.
本発明の一態様の潤滑油組成物が、ＳＡＥ Ｊ３００：２０１５による粘度グレードが０Ｗ－３０である場合、当該潤滑油組成物の４０℃における動粘度は、省燃費性をより良好とした潤滑油組成物とする観点から、好ましくは４５．０ｍｍ２／ｓ以下、より好ましくは４４．０ｍｍ２／ｓ以下であり、また、好ましくは２５．０ｍｍ２／ｓ以上、より好ましくは３０．０ｍｍ２／ｓ以上、更に好ましくは３５．０ｍｍ２／ｓ以上、より更に好ましくは４０．０ｍｍ２／ｓ以上である。
When the lubricating oil composition of one embodiment of the present invention has a viscosity grade of 0W-30 according to SAE J300:2015, the kinematic viscosity at 40°C of the lubricating oil composition is a lubricating oil with better fuel efficiency. From the viewpoint of forming a composition, it is preferably 45.0 mm 2 /s or less, more preferably 44.0 mm 2 /s or less, and preferably 25.0 mm 2 /s or more, more preferably 30.0 mm 2 / s. s or more, more preferably 35.0 mm 2 /s or more, even more preferably 40.0 mm 2 /s or more.
本発明の一態様の潤滑油組成物が、ＳＡＥ Ｊ３００：２０１５による粘度グレードが０Ｗ－３０である場合、当該潤滑油組成物の１００℃における動粘度は、省燃費性をより良好とした潤滑油組成物とする観点から、好ましくは１０．０ｍｍ２／ｓ以下、より好ましくは９．８ｍｍ２／ｓ以下であり、また、好ましくは６．０ｍｍ２／ｓ以上、より好ましくは７．０ｍｍ２／ｓ以上、更に好ましくは８．０ｍｍ２／ｓ以上、より更に好ましくは９．０ｍｍ２／ｓ以上である。
When the lubricating oil composition of one embodiment of the present invention has a viscosity grade of 0W-30 according to SAE J300:2015, the kinematic viscosity at 100°C of the lubricating oil composition is a lubricating oil with better fuel efficiency. From the viewpoint of making a composition, it is preferably 10.0 mm 2 /s or less, more preferably 9.8 mm 2 /s or less, and preferably 6.0 mm 2 /s or more, more preferably 7.0 mm 2 / s. s or more, more preferably 8.0 mm 2 /s or more, even more preferably 9.0 mm 2 /s or more.
本発明の一態様の潤滑油組成物の１５０℃におけるＨＴＨＳ粘度は、高温環境下での油膜保持性を向上させ、耐摩耗性に優れた潤滑油組成物とする観点から、好ましくは２．５ｍＰａ・ｓ以上、より好ましくは２．６ｍＰａ・ｓ以上であり、高温環境下での省燃費性を良好とし、さらに高圧環境下での使用にも適した潤滑油組成物とする観点から、好ましくは３．７ｍＰａ・ｓ以下、より好ましくは３．５ｍＰａ・ｓ以下、更に好ましくは３．４ｍＰａ・ｓ以下、より更に好ましくは３．３ｍＰａ・ｓ以下、特に好ましくは３．２ｍＰａ・ｓ以下である。
本明細書において、１５０℃におけるＨＴＨＳ粘度は、ＡＳＴＭ Ｄ４６８３に準拠して、１５０℃で測定した値を意味する。 The HTHS viscosity at 150°C of the lubricating oil composition of one embodiment of the present invention is preferably 2.5 mPa from the viewpoint of improving oil film retention in a high-temperature environment and providing a lubricating oil composition with excellent wear resistance.・s or more, more preferably 2.6 mPa・s or more, from the viewpoint of providing a lubricating oil composition with good fuel efficiency in high-temperature environments and also suitable for use in high-pressure environments. It is 3.7 mPa·s or less, more preferably 3.5 mPa·s or less, still more preferably 3.4 mPa·s or less, even more preferably 3.3 mPa·s or less, particularly preferably 3.2 mPa·s or less.
In this specification, HTHS viscosity at 150°C means a value measured at 150°C in accordance with ASTM D4683.
本明細書において、１５０℃におけるＨＴＨＳ粘度は、ＡＳＴＭ Ｄ４６８３に準拠して、１５０℃で測定した値を意味する。 The HTHS viscosity at 150°C of the lubricating oil composition of one embodiment of the present invention is preferably 2.5 mPa from the viewpoint of improving oil film retention in a high-temperature environment and providing a lubricating oil composition with excellent wear resistance.・s or more, more preferably 2.6 mPa・s or more, from the viewpoint of providing a lubricating oil composition with good fuel efficiency in high-temperature environments and also suitable for use in high-pressure environments. It is 3.7 mPa·s or less, more preferably 3.5 mPa·s or less, still more preferably 3.4 mPa·s or less, even more preferably 3.3 mPa·s or less, particularly preferably 3.2 mPa·s or less.
In this specification, HTHS viscosity at 150°C means a value measured at 150°C in accordance with ASTM D4683.
本発明の一態様の潤滑油組成物に対して、後述の実施例に記載の方法に基づいて測定及び算出した残油率は、高温環境下及び／又は高圧環境下で使用しても、良好な流動性が保持され、デポジット発生の抑制効果が高い潤滑油組成物とする観点から、好ましくは２５．０質量％以上、より好ましくは２６．０質量％以上、更に好ましくは２７．０質量％以上、より更に好ましくは２８．０質量％以上である。
The residual oil percentage of the lubricating oil composition of one embodiment of the present invention, measured and calculated based on the method described in the Examples below, is good even when used in a high temperature environment and/or a high pressure environment. From the viewpoint of providing a lubricating oil composition that maintains good fluidity and is highly effective in suppressing deposit generation, preferably 25.0% by mass or more, more preferably 26.0% by mass or more, and even more preferably 27.0% by mass. The content is more preferably 28.0% by mass or more.
本発明の一態様の潤滑油組成物に対して、後述の実施例に記載の方法に基づいて測定したＳＲＶ摩擦係数は、好ましくは０．０８以下、より好ましくは０．０７以下、更に好ましくは０．０６以下、より更に好ましくは０．０５以下である。
The lubricating oil composition of one embodiment of the present invention has an SRV friction coefficient of preferably 0.08 or less, more preferably 0.07 or less, and even more preferably It is 0.06 or less, more preferably 0.05 or less.
本発明の一態様の潤滑油組成物に対して、ＪＰＩ－５Ｓ－５５－９９に準拠して実施したホットチューブ試験における評点は、好ましくは７．０以上、より好ましくは７．５以上、更に好ましくは８．０以上、より更に好ましくは８．５以上である。
なお、上記のホットチューブ試験の具体的な手順や諸条件は、後述の実施例に記載の方法のとおりである。 The lubricating oil composition of one embodiment of the present invention has a rating of preferably 7.0 or higher, more preferably 7.5 or higher, and even Preferably it is 8.0 or more, and even more preferably 8.5 or more.
The specific procedure and conditions for the hot tube test described above are the same as those described in Examples below.
なお、上記のホットチューブ試験の具体的な手順や諸条件は、後述の実施例に記載の方法のとおりである。 The lubricating oil composition of one embodiment of the present invention has a rating of preferably 7.0 or higher, more preferably 7.5 or higher, and even Preferably it is 8.0 or more, and even more preferably 8.5 or more.
The specific procedure and conditions for the hot tube test described above are the same as those described in Examples below.
〔潤滑油組成物の用途〕
本発明の一態様の潤滑油組成物は、使用環境に依らず、デポジットの発生の抑制効果、清浄性及び安定性、並びに、省燃費性に優れる。
そのため、本発明の一態様の潤滑油組成物は、例えば、内燃機関の潤滑に好適に使用し得る。
そのため、本発明の一態様の潤滑油組成物は、上記特性を発揮し得る各種装置に適用することができるが、内燃機関における各部品間の潤滑に好適に使用し得る。そして、内燃機関の中でも、特に、ディーゼルエンジンにおける各部品間の潤滑により好適に使用し得る。また、排気ガスの一部を再度吸気させ還流させるＥＧＲシステムを備える過給機における各部品間の潤滑にも好適に使用し得る。 [Applications of lubricating oil composition]
The lubricating oil composition of one embodiment of the present invention is excellent in suppressing deposit generation, cleanliness and stability, and fuel efficiency, regardless of the usage environment.
Therefore, the lubricating oil composition of one embodiment of the present invention can be suitably used, for example, for lubricating an internal combustion engine.
Therefore, the lubricating oil composition of one embodiment of the present invention can be applied to various devices that can exhibit the above characteristics, and can be suitably used for lubrication between various parts in an internal combustion engine. Among internal combustion engines, the present invention can be suitably used for lubricating various parts in diesel engines in particular. Further, it can be suitably used for lubrication between various parts in a supercharger equipped with an EGR system that re-inhales and recirculates a portion of exhaust gas.
本発明の一態様の潤滑油組成物は、使用環境に依らず、デポジットの発生の抑制効果、清浄性及び安定性、並びに、省燃費性に優れる。
そのため、本発明の一態様の潤滑油組成物は、例えば、内燃機関の潤滑に好適に使用し得る。
そのため、本発明の一態様の潤滑油組成物は、上記特性を発揮し得る各種装置に適用することができるが、内燃機関における各部品間の潤滑に好適に使用し得る。そして、内燃機関の中でも、特に、ディーゼルエンジンにおける各部品間の潤滑により好適に使用し得る。また、排気ガスの一部を再度吸気させ還流させるＥＧＲシステムを備える過給機における各部品間の潤滑にも好適に使用し得る。 [Applications of lubricating oil composition]
The lubricating oil composition of one embodiment of the present invention is excellent in suppressing deposit generation, cleanliness and stability, and fuel efficiency, regardless of the usage environment.
Therefore, the lubricating oil composition of one embodiment of the present invention can be suitably used, for example, for lubricating an internal combustion engine.
Therefore, the lubricating oil composition of one embodiment of the present invention can be applied to various devices that can exhibit the above characteristics, and can be suitably used for lubrication between various parts in an internal combustion engine. Among internal combustion engines, the present invention can be suitably used for lubricating various parts in diesel engines in particular. Further, it can be suitably used for lubrication between various parts in a supercharger equipped with an EGR system that re-inhales and recirculates a portion of exhaust gas.
このような内燃機関は、高温環境下及び／又は高圧環境下となり易く、潤滑油組成物の蒸発量が増大して流動性が低下し易く、デポジットの発生が発生し易い環境である。また、同時に、清浄性及び安定性の低下や、省燃費性の低下も問題となり易い。
これらの問題に対して、本発明の一態様の潤滑油組成物は、使用環境に依らず、デポジットの発生の抑制効果、清浄性及び安定性、並びに、省燃費性に優れるため、このような高温環境下及び／又は高圧環境下となり易い内燃機関の潤滑用途に対しても好適に使用することができる。 Such an internal combustion engine is likely to be under a high temperature environment and/or a high pressure environment, which is an environment where the amount of evaporation of the lubricating oil composition increases, the fluidity tends to decrease, and deposits are likely to occur. Moreover, at the same time, a decrease in cleanliness and stability and a decrease in fuel efficiency tend to become problems.
In order to solve these problems, the lubricating oil composition of one embodiment of the present invention has excellent deposit suppression effects, cleanliness and stability, and fuel efficiency regardless of the usage environment. It can also be suitably used for lubricating internal combustion engines that are likely to be exposed to high temperature and/or high pressure environments.
これらの問題に対して、本発明の一態様の潤滑油組成物は、使用環境に依らず、デポジットの発生の抑制効果、清浄性及び安定性、並びに、省燃費性に優れるため、このような高温環境下及び／又は高圧環境下となり易い内燃機関の潤滑用途に対しても好適に使用することができる。 Such an internal combustion engine is likely to be under a high temperature environment and/or a high pressure environment, which is an environment where the amount of evaporation of the lubricating oil composition increases, the fluidity tends to decrease, and deposits are likely to occur. Moreover, at the same time, a decrease in cleanliness and stability and a decrease in fuel efficiency tend to become problems.
In order to solve these problems, the lubricating oil composition of one embodiment of the present invention has excellent deposit suppression effects, cleanliness and stability, and fuel efficiency regardless of the usage environment. It can also be suitably used for lubricating internal combustion engines that are likely to be exposed to high temperature and/or high pressure environments.
また、本発明の一態様の潤滑油組成物の上述の特性を考慮すると、本発明は、以下の［Ｉ］及び［II］も提供し得る。
［Ｉ］上述の本発明の一態様の潤滑油組成物を充填した、内燃機関。
［II］上述の本発明の一態様の潤滑油組成物を内燃機関の潤滑に適用する、内燃機関の潤滑方法。
上記［Ｉ］及び［II］に記載の内燃機関としては、例えば、ディーゼルエンジン、排気ガスの一部を再度吸気させ還流させるＥＧＲシステムを備える過給機が挙げられる。 Further, in consideration of the above-mentioned characteristics of the lubricating oil composition of one embodiment of the present invention, the present invention can also provide the following [I] and [II].
[I] An internal combustion engine filled with the lubricating oil composition of one embodiment of the present invention described above.
[II] A method for lubricating an internal combustion engine, in which the lubricating oil composition of one embodiment of the present invention described above is applied to lubricating the engine.
Examples of the internal combustion engine described in [I] and [II] above include a diesel engine and a supercharger equipped with an EGR system that re-inhales and recirculates a portion of exhaust gas.
［Ｉ］上述の本発明の一態様の潤滑油組成物を充填した、内燃機関。
［II］上述の本発明の一態様の潤滑油組成物を内燃機関の潤滑に適用する、内燃機関の潤滑方法。
上記［Ｉ］及び［II］に記載の内燃機関としては、例えば、ディーゼルエンジン、排気ガスの一部を再度吸気させ還流させるＥＧＲシステムを備える過給機が挙げられる。 Further, in consideration of the above-mentioned characteristics of the lubricating oil composition of one embodiment of the present invention, the present invention can also provide the following [I] and [II].
[I] An internal combustion engine filled with the lubricating oil composition of one embodiment of the present invention described above.
[II] A method for lubricating an internal combustion engine, in which the lubricating oil composition of one embodiment of the present invention described above is applied to lubricating the engine.
Examples of the internal combustion engine described in [I] and [II] above include a diesel engine and a supercharger equipped with an EGR system that re-inhales and recirculates a portion of exhaust gas.
以上のとおり、本発明は、以下の態様を開示する。
［１］基油（Ａ）と、金属系清浄剤（Ｂ）を含み、
成分（Ａ）中の炭素数３２以上の重質分（Ｈｆ）の含有割合が、成分（Ａ）の全量基準で、１４．０質量％以上であり、
成分（Ｂ）が、塩基価１００ｍｇＫＯＨ／ｇ以上の過塩基性カルシウムサリシレート（Ｂ１）を含み、
成分（Ｂ）中の成分（Ｂ１）の含有割合が、成分（Ｂ）の全量基準で、３５．０質量％以上である、
潤滑油組成物。
［２］成分（Ａ）中の炭素数２１以下の軽質分（Ｌｆ）と、炭素数３２以上の重質分（Ｈｆ）との含有量比［（Ｌｆ）／（Ｈｆ）］が、質量比で、０．０５以上である、上記［１］に記載の潤滑油組成物。
［３］成分（Ａ）中の炭素数２１以下の軽質分（Ｌｆ）の含有割合が、成分（Ａ）の全量基準で、１．０質量％以上である、上記［１］又は［２］に記載の潤滑油組成物。
［４］成分（Ｂ１）のカルシウム原子換算での含有量が、前記潤滑油組成物の全量基準で、０．０１～０．８０質量％である、上記［１］～［３］のいずれか一項に記載の潤滑油組成物。
［５］成分（Ｂ）の金属原子換算での含有量が、前記潤滑油組成物の全量基準で、０．０１～１．００質量％である、上記［１］～［４］のいずれか一項に記載の潤滑油組成物。
［６］さらに粘度指数向上剤（Ｃ）を含有する、上記［１］～［５］のいずれか一項に記載の潤滑油組成物。
［７］前記潤滑油組成物の４０℃における動粘度が、５０．０ｍｍ２／ｓ以下である、上記［１］～［６］のいずれか一項に記載の潤滑油組成物。
［８］前記潤滑油組成物の粘度指数が、１３０以上である、上記［１］～［７］のいずれか一項に記載の潤滑油組成物。
［９］前記潤滑油組成物の１５０℃におけるＨＴＨＳ粘度が、２．５ｍＰａ・ｓ以上である、上記［１］～［８］のいずれか一項に記載の潤滑油組成物。
［１０］前記潤滑油組成物の粘度グレードが、ＳＡＥ Ｊ３００：２０１５による分類で、０Ｗ－２０～０Ｗ－３０である、上記［１］～［９］のいずれか一項に記載の潤滑油組成物。
［１１］ディーゼルエンジンに用いられる、上記［１］～［１０］のいずれか一項に記載の潤滑油組成物。
［１２］上記［１］～［１１］のいずれか一項に記載の潤滑油組成物を充填した、内燃機関。
［１３］前記内燃機関が、ディーゼルエンジンである、上記［１２］に記載の内燃機関。
［１４］上記［１］～［１１］のいずれか一項に記載の潤滑油組成物を、内燃機関の潤滑に適用する、内燃機関の潤滑方法。
［１５］前記内燃機関が、ディーゼルエンジンである、上記［１４］に記載の内燃機関の潤滑方法。 As described above, the present invention discloses the following aspects.
[1] Contains base oil (A) and metal detergent (B),
The content of the heavy fraction (Hf) having 32 or more carbon atoms in the component (A) is 14.0% by mass or more based on the total amount of the component (A),
Component (B) contains overbased calcium salicylate (B1) with a base value of 100 mgKOH/g or more,
The content ratio of component (B1) in component (B) is 35.0% by mass or more based on the total amount of component (B),
Lubricating oil composition.
[2] The content ratio [(Lf)/(Hf)] of the light fraction (Lf) having 21 or less carbon atoms and the heavy fraction (Hf) having 32 or more carbon atoms in component (A) is the mass ratio The lubricating oil composition according to the above [1], wherein the lubricating oil composition is 0.05 or more.
[3] The above [1] or [2], wherein the content of light fractions (Lf) having 21 or less carbon atoms in component (A) is 1.0% by mass or more, based on the total amount of component (A). The lubricating oil composition described in .
[4] Any of the above [1] to [3], wherein the content of component (B1) in terms of calcium atoms is 0.01 to 0.80% by mass based on the total amount of the lubricating oil composition. The lubricating oil composition according to item 1.
[5] Any one of [1] to [4] above, wherein the content of component (B) in terms of metal atoms is 0.01 to 1.00% by mass based on the total amount of the lubricating oil composition. The lubricating oil composition according to item 1.
[6] The lubricating oil composition according to any one of [1] to [5] above, further containing a viscosity index improver (C).
[7] The lubricating oil composition according to any one of [1] to [6] above, wherein the lubricating oil composition has a kinematic viscosity at 40° C. of 50.0 mm 2 /s or less.
[8] The lubricating oil composition according to any one of [1] to [7] above, wherein the lubricating oil composition has a viscosity index of 130 or more.
[9] The lubricating oil composition according to any one of [1] to [8] above, wherein the HTHS viscosity at 150° C. of the lubricating oil composition is 2.5 mPa·s or more.
[10] The lubricating oil composition according to any one of [1] to [9] above, wherein the viscosity grade of the lubricating oil composition is 0W-20 to 0W-30 according to SAE J300:2015. thing.
[11] The lubricating oil composition according to any one of [1] to [10] above, which is used in a diesel engine.
[12] An internal combustion engine filled with the lubricating oil composition according to any one of [1] to [11] above.
[13] The internal combustion engine according to [12] above, wherein the internal combustion engine is a diesel engine.
[14] A method for lubricating an internal combustion engine, comprising applying the lubricating oil composition according to any one of [1] to [11] above to lubricate an internal combustion engine.
[15] The method for lubricating an internal combustion engine according to [14] above, wherein the internal combustion engine is a diesel engine.
［１］基油（Ａ）と、金属系清浄剤（Ｂ）を含み、
成分（Ａ）中の炭素数３２以上の重質分（Ｈｆ）の含有割合が、成分（Ａ）の全量基準で、１４．０質量％以上であり、
成分（Ｂ）が、塩基価１００ｍｇＫＯＨ／ｇ以上の過塩基性カルシウムサリシレート（Ｂ１）を含み、
成分（Ｂ）中の成分（Ｂ１）の含有割合が、成分（Ｂ）の全量基準で、３５．０質量％以上である、
潤滑油組成物。
［２］成分（Ａ）中の炭素数２１以下の軽質分（Ｌｆ）と、炭素数３２以上の重質分（Ｈｆ）との含有量比［（Ｌｆ）／（Ｈｆ）］が、質量比で、０．０５以上である、上記［１］に記載の潤滑油組成物。
［３］成分（Ａ）中の炭素数２１以下の軽質分（Ｌｆ）の含有割合が、成分（Ａ）の全量基準で、１．０質量％以上である、上記［１］又は［２］に記載の潤滑油組成物。
［４］成分（Ｂ１）のカルシウム原子換算での含有量が、前記潤滑油組成物の全量基準で、０．０１～０．８０質量％である、上記［１］～［３］のいずれか一項に記載の潤滑油組成物。
［５］成分（Ｂ）の金属原子換算での含有量が、前記潤滑油組成物の全量基準で、０．０１～１．００質量％である、上記［１］～［４］のいずれか一項に記載の潤滑油組成物。
［６］さらに粘度指数向上剤（Ｃ）を含有する、上記［１］～［５］のいずれか一項に記載の潤滑油組成物。
［７］前記潤滑油組成物の４０℃における動粘度が、５０．０ｍｍ２／ｓ以下である、上記［１］～［６］のいずれか一項に記載の潤滑油組成物。
［８］前記潤滑油組成物の粘度指数が、１３０以上である、上記［１］～［７］のいずれか一項に記載の潤滑油組成物。
［９］前記潤滑油組成物の１５０℃におけるＨＴＨＳ粘度が、２．５ｍＰａ・ｓ以上である、上記［１］～［８］のいずれか一項に記載の潤滑油組成物。
［１０］前記潤滑油組成物の粘度グレードが、ＳＡＥ Ｊ３００：２０１５による分類で、０Ｗ－２０～０Ｗ－３０である、上記［１］～［９］のいずれか一項に記載の潤滑油組成物。
［１１］ディーゼルエンジンに用いられる、上記［１］～［１０］のいずれか一項に記載の潤滑油組成物。
［１２］上記［１］～［１１］のいずれか一項に記載の潤滑油組成物を充填した、内燃機関。
［１３］前記内燃機関が、ディーゼルエンジンである、上記［１２］に記載の内燃機関。
［１４］上記［１］～［１１］のいずれか一項に記載の潤滑油組成物を、内燃機関の潤滑に適用する、内燃機関の潤滑方法。
［１５］前記内燃機関が、ディーゼルエンジンである、上記［１４］に記載の内燃機関の潤滑方法。 As described above, the present invention discloses the following aspects.
[1] Contains base oil (A) and metal detergent (B),
The content of the heavy fraction (Hf) having 32 or more carbon atoms in the component (A) is 14.0% by mass or more based on the total amount of the component (A),
Component (B) contains overbased calcium salicylate (B1) with a base value of 100 mgKOH/g or more,
The content ratio of component (B1) in component (B) is 35.0% by mass or more based on the total amount of component (B),
Lubricating oil composition.
[2] The content ratio [(Lf)/(Hf)] of the light fraction (Lf) having 21 or less carbon atoms and the heavy fraction (Hf) having 32 or more carbon atoms in component (A) is the mass ratio The lubricating oil composition according to the above [1], wherein the lubricating oil composition is 0.05 or more.
[3] The above [1] or [2], wherein the content of light fractions (Lf) having 21 or less carbon atoms in component (A) is 1.0% by mass or more, based on the total amount of component (A). The lubricating oil composition described in .
[4] Any of the above [1] to [3], wherein the content of component (B1) in terms of calcium atoms is 0.01 to 0.80% by mass based on the total amount of the lubricating oil composition. The lubricating oil composition according to item 1.
[5] Any one of [1] to [4] above, wherein the content of component (B) in terms of metal atoms is 0.01 to 1.00% by mass based on the total amount of the lubricating oil composition. The lubricating oil composition according to item 1.
[6] The lubricating oil composition according to any one of [1] to [5] above, further containing a viscosity index improver (C).
[7] The lubricating oil composition according to any one of [1] to [6] above, wherein the lubricating oil composition has a kinematic viscosity at 40° C. of 50.0 mm 2 /s or less.
[8] The lubricating oil composition according to any one of [1] to [7] above, wherein the lubricating oil composition has a viscosity index of 130 or more.
[9] The lubricating oil composition according to any one of [1] to [8] above, wherein the HTHS viscosity at 150° C. of the lubricating oil composition is 2.5 mPa·s or more.
[10] The lubricating oil composition according to any one of [1] to [9] above, wherein the viscosity grade of the lubricating oil composition is 0W-20 to 0W-30 according to SAE J300:2015. thing.
[11] The lubricating oil composition according to any one of [1] to [10] above, which is used in a diesel engine.
[12] An internal combustion engine filled with the lubricating oil composition according to any one of [1] to [11] above.
[13] The internal combustion engine according to [12] above, wherein the internal combustion engine is a diesel engine.
[14] A method for lubricating an internal combustion engine, comprising applying the lubricating oil composition according to any one of [1] to [11] above to lubricate an internal combustion engine.
[15] The method for lubricating an internal combustion engine according to [14] above, wherein the internal combustion engine is a diesel engine.
次に、本発明を実施例により更に詳細に説明するが、本発明はこれらの例によって何ら限定されるものではない。なお、各種物性の測定法は、下記のとおりである。
Next, the present invention will be explained in more detail with reference to examples, but the present invention is not limited to these examples in any way. The methods for measuring various physical properties are as follows.
（１）動粘度及び粘度指数
ＪＩＳ Ｋ２２８３：２０００に準拠して測定及び算出した。
（２）環分析
ＡＳＴＭ Ｄ－３２３８環分析（ｎ－ｄ－Ｍ法）に準拠して測定した。
（３）基油を構成する各炭素数の成分の含有量
ガスクロマトグラフ（株式会社島津製作所製、製品名「ＧＣ－２０１４」）を用いて、以下の測定条件にて、標準試料とのクロマトグラムと比較することで、基油を構成する各炭素数の成分の含有量を算出した。
・カラムサイズ：４ｍｍ×３ｍｍ×１．５ｍｍ（ＳＵＳ）
・カラム充填剤：Ｓｉｌｉｃｏｎｅ ＯＶ－１ １．５％・Ｓｈｉｎｗａｓｏｒｂ－Ｓ ６０／８０
・標準試料：ｎ―ヘキサン、ｎ―パラフィン：Ｃ８～Ｃ３６標準試料
・ガス：Ｈｅガス、５０ｍＬ／ｍｉｎ
（４）塩基価（過塩素酸法）
ＪＩＳ Ｋ２５０１「石油製品及び潤滑油－中和価試験方法」の「９．電位差滴定法（塩基価・過塩素酸法）」に準拠して測定した。
（５）カルシウム原子（Ｃａ）の含有量
ＪＰＩ－５Ｓ－３８－９２に準拠して測定した。
（６）重量平均分子量（Ｍｗ）
ゲル浸透クロマトグラフ装置（アジレント社製、「１２６０型ＨＰＬＣ」）を用いて、下記の条件下で測定し、標準ポリスチレン換算にて測定した値を用いた。
（測定条件）
・カラム：「Ｓｈｏｄｅｘ ＬＦ４０４」を２本、順次連結したもの。
・カラム温度：３５℃
・展開溶媒：クロロホルム
・流速：０．３ｍＬ／ｍｉｎ
（７）ＨＴＨＳ粘度（１５０℃）
ＡＳＴＭ Ｄ４６８３に準拠して、１５０℃で測定した。 (1) Kinematic viscosity and viscosity index Measured and calculated in accordance with JIS K2283:2000.
(2) Ring analysis Measured according to ASTM D-3238 ring analysis (ndM method).
(3) Content of components with each carbon number constituting the base oil Chromatogram with a standard sample using a gas chromatograph (manufactured by Shimadzu Corporation, product name "GC-2014") under the following measurement conditions. The content of components with each carbon number constituting the base oil was calculated by comparing with the following.
・Column size: 4mm x 3mm x 1.5mm (SUS)
・Column packing material: Silicone OV-1 1.5% ・Shinwasorb-S 60/80
・Standard sample: n-hexane, n-paraffin: C8 to C36 standard sample ・Gas: He gas, 50mL/min
(4) Base number (perchloric acid method)
It was measured in accordance with "9. Potentiometric titration method (base number/perchloric acid method)" of JIS K2501 "Petroleum products and lubricating oils - Neutralization number test method".
(5) Content of calcium atoms (Ca) Measured in accordance with JPI-5S-38-92.
(6) Weight average molecular weight (Mw)
Measurements were made using a gel permeation chromatography device (manufactured by Agilent, "1260 HPLC") under the following conditions, and the values measured in terms of standard polystyrene were used.
(Measurement condition)
・Column: Two “Shodex LF404” connected in sequence.
・Column temperature: 35℃
・Developing solvent: Chloroform ・Flow rate: 0.3 mL/min
(7) HTHS viscosity (150°C)
Measured at 150°C according to ASTM D4683.
ＪＩＳ Ｋ２２８３：２０００に準拠して測定及び算出した。
（２）環分析
ＡＳＴＭ Ｄ－３２３８環分析（ｎ－ｄ－Ｍ法）に準拠して測定した。
（３）基油を構成する各炭素数の成分の含有量
ガスクロマトグラフ（株式会社島津製作所製、製品名「ＧＣ－２０１４」）を用いて、以下の測定条件にて、標準試料とのクロマトグラムと比較することで、基油を構成する各炭素数の成分の含有量を算出した。
・カラムサイズ：４ｍｍ×３ｍｍ×１．５ｍｍ（ＳＵＳ）
・カラム充填剤：Ｓｉｌｉｃｏｎｅ ＯＶ－１ １．５％・Ｓｈｉｎｗａｓｏｒｂ－Ｓ ６０／８０
・標準試料：ｎ―ヘキサン、ｎ―パラフィン：Ｃ８～Ｃ３６標準試料
・ガス：Ｈｅガス、５０ｍＬ／ｍｉｎ
（４）塩基価（過塩素酸法）
ＪＩＳ Ｋ２５０１「石油製品及び潤滑油－中和価試験方法」の「９．電位差滴定法（塩基価・過塩素酸法）」に準拠して測定した。
（５）カルシウム原子（Ｃａ）の含有量
ＪＰＩ－５Ｓ－３８－９２に準拠して測定した。
（６）重量平均分子量（Ｍｗ）
ゲル浸透クロマトグラフ装置（アジレント社製、「１２６０型ＨＰＬＣ」）を用いて、下記の条件下で測定し、標準ポリスチレン換算にて測定した値を用いた。
（測定条件）
・カラム：「Ｓｈｏｄｅｘ ＬＦ４０４」を２本、順次連結したもの。
・カラム温度：３５℃
・展開溶媒：クロロホルム
・流速：０．３ｍＬ／ｍｉｎ
（７）ＨＴＨＳ粘度（１５０℃）
ＡＳＴＭ Ｄ４６８３に準拠して、１５０℃で測定した。 (1) Kinematic viscosity and viscosity index Measured and calculated in accordance with JIS K2283:2000.
(2) Ring analysis Measured according to ASTM D-3238 ring analysis (ndM method).
(3) Content of components with each carbon number constituting the base oil Chromatogram with a standard sample using a gas chromatograph (manufactured by Shimadzu Corporation, product name "GC-2014") under the following measurement conditions. The content of components with each carbon number constituting the base oil was calculated by comparing with the following.
・Column size: 4mm x 3mm x 1.5mm (SUS)
・Column packing material: Silicone OV-1 1.5% ・Shinwasorb-S 60/80
・Standard sample: n-hexane, n-paraffin: C8 to C36 standard sample ・Gas: He gas, 50mL/min
(4) Base number (perchloric acid method)
It was measured in accordance with "9. Potentiometric titration method (base number/perchloric acid method)" of JIS K2501 "Petroleum products and lubricating oils - Neutralization number test method".
(5) Content of calcium atoms (Ca) Measured in accordance with JPI-5S-38-92.
(6) Weight average molecular weight (Mw)
Measurements were made using a gel permeation chromatography device (manufactured by Agilent, "1260 HPLC") under the following conditions, and the values measured in terms of standard polystyrene were used.
(Measurement condition)
・Column: Two “Shodex LF404” connected in sequence.
・Column temperature: 35℃
・Developing solvent: Chloroform ・Flow rate: 0.3 mL/min
(7) HTHS viscosity (150°C)
Measured at 150°C according to ASTM D4683.
実施例１～６、比較例１～６
基油及び各種添加剤を、表１～２に示す配合量にて添加して混合し、潤滑油組成物をそれぞれ調製した。表１に示す実施例１～３及び比較例１～３では、ＳＡＥ Ｊ３００：２０１５による分類で０Ｗ－２０に対応するように潤滑油組成物の粘度特性を調整している。また、表２に示す実施例４～６及び比較例４～６では、ＳＡＥ Ｊ３００：２０１５による分類で０Ｗ－３０に対応するように潤滑油組成物の粘度特性を調整している。
なお、当該潤滑油組成物の調製に使用した、各成分の詳細は以下のとおりである。 Examples 1 to 6, Comparative Examples 1 to 6
The base oil and various additives were added and mixed in the amounts shown in Tables 1 and 2 to prepare lubricating oil compositions. In Examples 1 to 3 and Comparative Examples 1 to 3 shown in Table 1, the viscosity characteristics of the lubricating oil compositions were adjusted to correspond to 0W-20 according to the classification according to SAE J300:2015. Furthermore, in Examples 4 to 6 and Comparative Examples 4 to 6 shown in Table 2, the viscosity characteristics of the lubricating oil compositions were adjusted to correspond to 0W-30 according to the classification according to SAE J300:2015.
The details of each component used in the preparation of the lubricating oil composition are as follows.
基油及び各種添加剤を、表１～２に示す配合量にて添加して混合し、潤滑油組成物をそれぞれ調製した。表１に示す実施例１～３及び比較例１～３では、ＳＡＥ Ｊ３００：２０１５による分類で０Ｗ－２０に対応するように潤滑油組成物の粘度特性を調整している。また、表２に示す実施例４～６及び比較例４～６では、ＳＡＥ Ｊ３００：２０１５による分類で０Ｗ－３０に対応するように潤滑油組成物の粘度特性を調整している。
なお、当該潤滑油組成物の調製に使用した、各成分の詳細は以下のとおりである。 Examples 1 to 6, Comparative Examples 1 to 6
The base oil and various additives were added and mixed in the amounts shown in Tables 1 and 2 to prepare lubricating oil compositions. In Examples 1 to 3 and Comparative Examples 1 to 3 shown in Table 1, the viscosity characteristics of the lubricating oil compositions were adjusted to correspond to 0W-20 according to the classification according to SAE J300:2015. Furthermore, in Examples 4 to 6 and Comparative Examples 4 to 6 shown in Table 2, the viscosity characteristics of the lubricating oil compositions were adjusted to correspond to 0W-30 according to the classification according to SAE J300:2015.
The details of each component used in the preparation of the lubricating oil composition are as follows.
＜成分（Ａ）：基油＞
・「基油（ａ－１）」：ＡＰＩの基油カテゴリーのグループIIIに分類される基油、４０℃動粘度＝７．１ｍｍ２／ｓ、粘度指数＝１０９。
・「基油（ａ－２）」：ＡＰＩの基油カテゴリーのグループIIIに分類される基油、４０℃動粘度＝１８．４ｍｍ２／ｓ、粘度指数＝１２５。
・「基油（ａ－３）」：ＡＰＩの基油カテゴリーのグループIIIに分類される基油、４０℃動粘度＝３２．７ｍｍ２／ｓ、粘度指数＝１３２。
・「基油（ａ－４）」：ＡＰＩの基油カテゴリーのグループIIIに分類される基油、４０℃動粘度＝４３．８ｍｍ２／ｓ、粘度指数＝１４３。 <Component (A): Base oil>
- "Base oil (a-1)": Base oil classified into Group III of the API base oil category, kinematic viscosity at 40°C = 7.1 mm 2 /s, viscosity index = 109.
- "Base oil (a-2)": Base oil classified into Group III of the API base oil category, kinematic viscosity at 40°C = 18.4 mm 2 /s, viscosity index = 125.
- "Base oil (a-3)": Base oil classified into Group III of the API base oil category, kinematic viscosity at 40°C = 32.7 mm 2 /s, viscosity index = 132.
- "Base oil (a-4)": Base oil classified into Group III of the API base oil category, kinematic viscosity at 40°C = 43.8 mm 2 /s, viscosity index = 143.
・「基油（ａ－１）」：ＡＰＩの基油カテゴリーのグループIIIに分類される基油、４０℃動粘度＝７．１ｍｍ２／ｓ、粘度指数＝１０９。
・「基油（ａ－２）」：ＡＰＩの基油カテゴリーのグループIIIに分類される基油、４０℃動粘度＝１８．４ｍｍ２／ｓ、粘度指数＝１２５。
・「基油（ａ－３）」：ＡＰＩの基油カテゴリーのグループIIIに分類される基油、４０℃動粘度＝３２．７ｍｍ２／ｓ、粘度指数＝１３２。
・「基油（ａ－４）」：ＡＰＩの基油カテゴリーのグループIIIに分類される基油、４０℃動粘度＝４３．８ｍｍ２／ｓ、粘度指数＝１４３。 <Component (A): Base oil>
- "Base oil (a-1)": Base oil classified into Group III of the API base oil category, kinematic viscosity at 40°C = 7.1 mm 2 /s, viscosity index = 109.
- "Base oil (a-2)": Base oil classified into Group III of the API base oil category, kinematic viscosity at 40°C = 18.4 mm 2 /s, viscosity index = 125.
- "Base oil (a-3)": Base oil classified into Group III of the API base oil category, kinematic viscosity at 40°C = 32.7 mm 2 /s, viscosity index = 132.
- "Base oil (a-4)": Base oil classified into Group III of the API base oil category, kinematic viscosity at 40°C = 43.8 mm 2 /s, viscosity index = 143.
＜成分（Ｂ）：金属系清浄剤＞
・「過塩基性Ｃａサリシレート（１）」：塩基価＝３５６ｍｇＫＯＨ／ｇのカルシウムサリチレート、Ｃａ含有量＝１２．５質量％、成分（Ｂ１）に該当。
・「過塩基性Ｃａサリシレート（２）」：塩基価＝２２８ｍｇＫＯＨ／ｇのカルシウムサリチレート、Ｃａ含有量＝７．９質量％、成分（Ｂ１）に該当。
・「中性Ｃａサリシレート」：塩基価＝６７．４ｍｇＫＯＨ／ｇのカルシウムサリチレート、Ｃａ含有量＝２．３２質量％。
・「過塩基性Ｃａスルホネート」：塩基価＝３０５ｍｇＫＯＨ／ｇのカルシウムスルホネート、Ｃａ含有量＝１１．７質量％。
・「過塩基性Ｃａフェネート」：塩基価＝１５２ｍｇＫＯＨ／ｇのカルシウムフェネート、Ｃａ含有量＝５．４９質量％。
・「中性Ｃａスルホネート」：塩基価＝１７ｍｇＫＯＨ／ｇのカルシウムスルホネート、Ｃａ含有量＝２．４質量％。 <Component (B): Metallic cleaning agent>
- "Overbased Ca salicylate (1)": Calcium salicylate with base number = 356 mgKOH/g, Ca content = 12.5% by mass, corresponding to component (B1).
- "Overbased Ca salicylate (2)": Calcium salicylate with base number = 228 mgKOH/g, Ca content = 7.9% by mass, corresponding to component (B1).
- "Neutral Ca salicylate": Calcium salicylate with base number = 67.4 mgKOH/g, Ca content = 2.32% by mass.
- "Overbased Ca sulfonate": calcium sulfonate with base number = 305 mgKOH/g, Ca content = 11.7% by mass.
- "Overbased Ca phenate": calcium phenate with base number = 152 mgKOH/g, Ca content = 5.49% by mass.
- "Neutral Ca sulfonate": Calcium sulfonate with base number = 17 mgKOH/g, Ca content = 2.4% by mass.
・「過塩基性Ｃａサリシレート（１）」：塩基価＝３５６ｍｇＫＯＨ／ｇのカルシウムサリチレート、Ｃａ含有量＝１２．５質量％、成分（Ｂ１）に該当。
・「過塩基性Ｃａサリシレート（２）」：塩基価＝２２８ｍｇＫＯＨ／ｇのカルシウムサリチレート、Ｃａ含有量＝７．９質量％、成分（Ｂ１）に該当。
・「中性Ｃａサリシレート」：塩基価＝６７．４ｍｇＫＯＨ／ｇのカルシウムサリチレート、Ｃａ含有量＝２．３２質量％。
・「過塩基性Ｃａスルホネート」：塩基価＝３０５ｍｇＫＯＨ／ｇのカルシウムスルホネート、Ｃａ含有量＝１１．７質量％。
・「過塩基性Ｃａフェネート」：塩基価＝１５２ｍｇＫＯＨ／ｇのカルシウムフェネート、Ｃａ含有量＝５．４９質量％。
・「中性Ｃａスルホネート」：塩基価＝１７ｍｇＫＯＨ／ｇのカルシウムスルホネート、Ｃａ含有量＝２．４質量％。 <Component (B): Metallic cleaning agent>
- "Overbased Ca salicylate (1)": Calcium salicylate with base number = 356 mgKOH/g, Ca content = 12.5% by mass, corresponding to component (B1).
- "Overbased Ca salicylate (2)": Calcium salicylate with base number = 228 mgKOH/g, Ca content = 7.9% by mass, corresponding to component (B1).
- "Neutral Ca salicylate": Calcium salicylate with base number = 67.4 mgKOH/g, Ca content = 2.32% by mass.
- "Overbased Ca sulfonate": calcium sulfonate with base number = 305 mgKOH/g, Ca content = 11.7% by mass.
- "Overbased Ca phenate": calcium phenate with base number = 152 mgKOH/g, Ca content = 5.49% by mass.
- "Neutral Ca sulfonate": Calcium sulfonate with base number = 17 mgKOH/g, Ca content = 2.4% by mass.
＜成分（Ｃ）：粘度指数向上剤＞
・「ＰＭＡ」：Ｍｗ＝４０万の非分散型ポリメタクリレート。
・「櫛形ＰＭＡ」：Ｍｗ＝３１万のポリメタクリレート系櫛形ポリマー。
・「分散型ＯＣＰ」：Ｍｗ＝１２万の分散型ポリオレフィン共重合体。 <Component (C): Viscosity index improver>
- "PMA": Non-dispersed polymethacrylate with Mw = 400,000.
- "Comb-shaped PMA": Polymethacrylate-based comb-shaped polymer with Mw = 310,000.
- "Dispersed OCP": Dispersed polyolefin copolymer with Mw = 120,000.
・「ＰＭＡ」：Ｍｗ＝４０万の非分散型ポリメタクリレート。
・「櫛形ＰＭＡ」：Ｍｗ＝３１万のポリメタクリレート系櫛形ポリマー。
・「分散型ＯＣＰ」：Ｍｗ＝１２万の分散型ポリオレフィン共重合体。 <Component (C): Viscosity index improver>
- "PMA": Non-dispersed polymethacrylate with Mw = 400,000.
- "Comb-shaped PMA": Polymethacrylate-based comb-shaped polymer with Mw = 310,000.
- "Dispersed OCP": Dispersed polyolefin copolymer with Mw = 120,000.
＜他の添加剤＞
・「添加剤混合物」：酸化防止剤、無灰系分散剤、摩擦調整剤、消泡剤、金属不活性化剤を含む添加剤混合物。 <Other additives>
- "Additive mixture": An additive mixture containing an antioxidant, an ashless dispersant, a friction modifier, an antifoaming agent, and a metal deactivator.
・「添加剤混合物」：酸化防止剤、無灰系分散剤、摩擦調整剤、消泡剤、金属不活性化剤を含む添加剤混合物。 <Other additives>
- "Additive mixture": An additive mixture containing an antioxidant, an ashless dispersant, a friction modifier, an antifoaming agent, and a metal deactivator.
調製した潤滑油組成物について、４０℃及び１００℃動粘度、粘度指数、並びに、１５０℃ＨＴＨＳ粘度を測定又は算出すると共に、以下の各種測定及び試験を行った。これらの結果を表１～２に示す。
Regarding the prepared lubricating oil composition, the kinematic viscosity at 40°C and 100°C, the viscosity index, and the HTHS viscosity at 150°C were measured or calculated, and the following various measurements and tests were performed. These results are shown in Tables 1 and 2.
（１）残油率測定
ＪＩＳ Ｋ２５４０で規定の潤滑油熱安定度試験で使用される容器及び恒温空気浴を用い、当該容器に試料油１ｇを入れ、空気を流量１０Ｌ／ｈｒで恒温空気浴に流し込みながら、２００℃で２０時間加熱し、加熱後の試料油の残渣量を測定した。そして、下記式から残油率を算出した。
・残油率［％］＝加熱後の試料油の残渣量［ｇ］／加熱前の試料油の質量（＝１ｇ）×１００
当該残油率が高いほど、高温環境下での流動性が良好であり、デポジットの抑制効果が高い潤滑油組成物であるといえる。本実施例においては、残油率が２５．０％以上である場合、高温環境下での流動性が良好であり、デポジットの抑制効果が高い潤滑油組成物と判断した。 (1) Residual oil percentage measurement Using a container and a constant temperature air bath that are used in the lubricating oil thermal stability test specified in JIS K2540, put 1 g of sample oil into the container and introduce air into the constant temperature air bath at a flow rate of 10 L/hr. While pouring, the sample oil was heated at 200°C for 20 hours, and the amount of residue of the sample oil after heating was measured. Then, the residual oil percentage was calculated from the following formula.
・Residual oil rate [%] = Residue amount of sample oil after heating [g] / Mass of sample oil before heating (= 1 g) x 100
It can be said that the higher the residual oil percentage, the better the fluidity in a high temperature environment, and the lubricating oil composition is more effective in suppressing deposits. In this example, when the residual oil percentage was 25.0% or more, it was determined that the lubricating oil composition had good fluidity in a high-temperature environment and was highly effective in suppressing deposits.
ＪＩＳ Ｋ２５４０で規定の潤滑油熱安定度試験で使用される容器及び恒温空気浴を用い、当該容器に試料油１ｇを入れ、空気を流量１０Ｌ／ｈｒで恒温空気浴に流し込みながら、２００℃で２０時間加熱し、加熱後の試料油の残渣量を測定した。そして、下記式から残油率を算出した。
・残油率［％］＝加熱後の試料油の残渣量［ｇ］／加熱前の試料油の質量（＝１ｇ）×１００
当該残油率が高いほど、高温環境下での流動性が良好であり、デポジットの抑制効果が高い潤滑油組成物であるといえる。本実施例においては、残油率が２５．０％以上である場合、高温環境下での流動性が良好であり、デポジットの抑制効果が高い潤滑油組成物と判断した。 (1) Residual oil percentage measurement Using a container and a constant temperature air bath that are used in the lubricating oil thermal stability test specified in JIS K2540, put 1 g of sample oil into the container and introduce air into the constant temperature air bath at a flow rate of 10 L/hr. While pouring, the sample oil was heated at 200°C for 20 hours, and the amount of residue of the sample oil after heating was measured. Then, the residual oil percentage was calculated from the following formula.
・Residual oil rate [%] = Residue amount of sample oil after heating [g] / Mass of sample oil before heating (= 1 g) x 100
It can be said that the higher the residual oil percentage, the better the fluidity in a high temperature environment, and the lubricating oil composition is more effective in suppressing deposits. In this example, when the residual oil percentage was 25.0% or more, it was determined that the lubricating oil composition had good fluidity in a high-temperature environment and was highly effective in suppressing deposits.
（２）ＳＲＶ試験
ＳＲＶ試験機（Ｏｐｔｉｍｏｌ社製）を用い、下記の条件にて、調製した各潤滑油組成物の摩擦係数を測定した。摩擦係数が低い程、摩擦低減効果に優れるため、省燃費性に優れた潤滑油組成物であるといえる。本実施例においては、摩擦係数が０．０８以下である場合、省燃費性が良好な潤滑油組成物であると判断した。
・テストピース：（ａ）ディスク：ＳＵＪ－２材、（ｂ）シリンダー：ＳＵＪ－２材
・振幅：１．５ｍｍ
・周波数：５０Ｈｚ
・荷重：４００Ｎ
・温度：４０℃ (2) SRV Test Using an SRV tester (manufactured by Optimol), the friction coefficient of each lubricating oil composition prepared was measured under the following conditions. The lower the friction coefficient, the better the friction reduction effect, and therefore it can be said that the lubricating oil composition has excellent fuel efficiency. In this example, when the friction coefficient was 0.08 or less, it was determined that the lubricating oil composition had good fuel efficiency.
・Test piece: (a) Disc: SUJ-2 material, (b) Cylinder: SUJ-2 material ・Amplitude: 1.5mm
・Frequency: 50Hz
・Load: 400N
・Temperature: 40℃
ＳＲＶ試験機（Ｏｐｔｉｍｏｌ社製）を用い、下記の条件にて、調製した各潤滑油組成物の摩擦係数を測定した。摩擦係数が低い程、摩擦低減効果に優れるため、省燃費性に優れた潤滑油組成物であるといえる。本実施例においては、摩擦係数が０．０８以下である場合、省燃費性が良好な潤滑油組成物であると判断した。
・テストピース：（ａ）ディスク：ＳＵＪ－２材、（ｂ）シリンダー：ＳＵＪ－２材
・振幅：１．５ｍｍ
・周波数：５０Ｈｚ
・荷重：４００Ｎ
・温度：４０℃ (2) SRV Test Using an SRV tester (manufactured by Optimol), the friction coefficient of each lubricating oil composition prepared was measured under the following conditions. The lower the friction coefficient, the better the friction reduction effect, and therefore it can be said that the lubricating oil composition has excellent fuel efficiency. In this example, when the friction coefficient was 0.08 or less, it was determined that the lubricating oil composition had good fuel efficiency.
・Test piece: (a) Disc: SUJ-2 material, (b) Cylinder: SUJ-2 material ・Amplitude: 1.5mm
・Frequency: 50Hz
・Load: 400N
・Temperature: 40℃
（３）ホットチューブ試験
ＪＰＩ－５Ｓ－５５－９９に準拠してホットチューブ試験を行った。具体的には、内径２ｍｍのガラス管に、ガラス管の温度を２９０℃に保ちながら、当該ガラス管内に実施例及び比較例で調製した潤滑油組成物を０．３ｍＬ／時間、及び、空気を１０ｍＬ／分の速さで１６時間流し続けてホットチューブ試験を実施した。そして、ホットチューブ試験後、ガラス管中に付着したラッカーと色見本とを比較してガラス管内の変色の程度を、無色透明の場合は１０点、黒の場合は０点として、０．５刻みで２１段階の評点をつけた。当該評点が高いほど、高温清浄性及び高温安定性に優れた潤滑油組成物であるといえる。本実施例においては、評点が７．０以上である場合、高温清浄性が良好な潤滑油組成物であると判断した。 (3) Hot tube test A hot tube test was conducted in accordance with JPI-5S-55-99. Specifically, while maintaining the temperature of the glass tube at 290° C., 0.3 mL/hour of the lubricating oil composition prepared in Examples and Comparative Examples and air were introduced into a glass tube with an inner diameter of 2 mm. A hot tube test was conducted with continuous flow at a rate of 10 mL/min for 16 hours. After the hot tube test, the degree of discoloration inside the glass tube is determined by comparing the lacquer adhered to the glass tube with the color sample, scoring 10 points if it is colorless and transparent, and 0 points if it is black, in 0.5 increments. I gave them a score on a 21-point scale. It can be said that the higher the score, the more excellent the lubricating oil composition is in high-temperature cleanliness and high-temperature stability. In this example, when the rating was 7.0 or higher, it was determined that the lubricating oil composition had good high-temperature detergency.
ＪＰＩ－５Ｓ－５５－９９に準拠してホットチューブ試験を行った。具体的には、内径２ｍｍのガラス管に、ガラス管の温度を２９０℃に保ちながら、当該ガラス管内に実施例及び比較例で調製した潤滑油組成物を０．３ｍＬ／時間、及び、空気を１０ｍＬ／分の速さで１６時間流し続けてホットチューブ試験を実施した。そして、ホットチューブ試験後、ガラス管中に付着したラッカーと色見本とを比較してガラス管内の変色の程度を、無色透明の場合は１０点、黒の場合は０点として、０．５刻みで２１段階の評点をつけた。当該評点が高いほど、高温清浄性及び高温安定性に優れた潤滑油組成物であるといえる。本実施例においては、評点が７．０以上である場合、高温清浄性が良好な潤滑油組成物であると判断した。 (3) Hot tube test A hot tube test was conducted in accordance with JPI-5S-55-99. Specifically, while maintaining the temperature of the glass tube at 290° C., 0.3 mL/hour of the lubricating oil composition prepared in Examples and Comparative Examples and air were introduced into a glass tube with an inner diameter of 2 mm. A hot tube test was conducted with continuous flow at a rate of 10 mL/min for 16 hours. After the hot tube test, the degree of discoloration inside the glass tube is determined by comparing the lacquer adhered to the glass tube with the color sample, scoring 10 points if it is colorless and transparent, and 0 points if it is black, in 0.5 increments. I gave them a score on a 21-point scale. It can be said that the higher the score, the more excellent the lubricating oil composition is in high-temperature cleanliness and high-temperature stability. In this example, when the rating was 7.0 or higher, it was determined that the lubricating oil composition had good high-temperature detergency.
表１及び２より、実施例１～６で調製した潤滑油組成物は、高温環境下でも流動性に優れており、デポジットの発生の抑制効果が高いと考えられる。また、例えば、４０℃動粘度等の粘度特性も良好であり、ＳＲＶ試験で測定された摩擦係数が低いため、省燃費性にも優れる。さらに、ホットチューブ試験の評点が８．５以上と高く、高温環境下における清浄性及び安定性も良好であった。
一方で、比較例１及び４で調製した潤滑油組成物は、高温環境下での流動性が劣るため、デポジットの発生の抑制が不十分となると考えられる。また、比較例２及び５で調製した潤滑油組成物は、４０℃動粘度が同じ表中の実施例に比べて高いため、省燃費性に問題があると共に、ホットチューブ試験の評点が低く、高温環境下における清浄性及び安定性に問題がある結果となった。さらに、比較例３及び６で調製した潤滑油組成物についても、ＳＲＶ試験で測定された摩擦係数が高く、省燃費性についても問題があると共に、ホットチューブ試験の評点が低く、高温環境下における清浄性及び安定性に問題がある結果となった。 From Tables 1 and 2, it is considered that the lubricating oil compositions prepared in Examples 1 to 6 have excellent fluidity even in high-temperature environments and are highly effective in suppressing deposit generation. Furthermore, for example, the viscosity properties such as 40° C. kinematic viscosity are good, and the coefficient of friction measured in the SRV test is low, so it is excellent in fuel efficiency. Furthermore, the hot tube test score was as high as 8.5 or higher, and the cleanliness and stability in a high-temperature environment were also good.
On the other hand, the lubricating oil compositions prepared in Comparative Examples 1 and 4 have poor fluidity in a high-temperature environment, so it is thought that the suppression of deposit generation is insufficient. In addition, the lubricating oil compositions prepared in Comparative Examples 2 and 5 have higher kinematic viscosity at 40°C than the examples in the same table, so they have problems in fuel efficiency and have low hot tube test scores. This resulted in problems with cleanliness and stability under high-temperature environments. Furthermore, the lubricating oil compositions prepared in Comparative Examples 3 and 6 also had high coefficients of friction measured in the SRV test, and there were problems with fuel efficiency, as well as low scores in the hot tube test, and This resulted in problems with cleanliness and stability.
一方で、比較例１及び４で調製した潤滑油組成物は、高温環境下での流動性が劣るため、デポジットの発生の抑制が不十分となると考えられる。また、比較例２及び５で調製した潤滑油組成物は、４０℃動粘度が同じ表中の実施例に比べて高いため、省燃費性に問題があると共に、ホットチューブ試験の評点が低く、高温環境下における清浄性及び安定性に問題がある結果となった。さらに、比較例３及び６で調製した潤滑油組成物についても、ＳＲＶ試験で測定された摩擦係数が高く、省燃費性についても問題があると共に、ホットチューブ試験の評点が低く、高温環境下における清浄性及び安定性に問題がある結果となった。 From Tables 1 and 2, it is considered that the lubricating oil compositions prepared in Examples 1 to 6 have excellent fluidity even in high-temperature environments and are highly effective in suppressing deposit generation. Furthermore, for example, the viscosity properties such as 40° C. kinematic viscosity are good, and the coefficient of friction measured in the SRV test is low, so it is excellent in fuel efficiency. Furthermore, the hot tube test score was as high as 8.5 or higher, and the cleanliness and stability in a high-temperature environment were also good.
On the other hand, the lubricating oil compositions prepared in Comparative Examples 1 and 4 have poor fluidity in a high-temperature environment, so it is thought that the suppression of deposit generation is insufficient. In addition, the lubricating oil compositions prepared in Comparative Examples 2 and 5 have higher kinematic viscosity at 40°C than the examples in the same table, so they have problems in fuel efficiency and have low hot tube test scores. This resulted in problems with cleanliness and stability under high-temperature environments. Furthermore, the lubricating oil compositions prepared in Comparative Examples 3 and 6 also had high coefficients of friction measured in the SRV test, and there were problems with fuel efficiency, as well as low scores in the hot tube test, and This resulted in problems with cleanliness and stability.
Claims (15)
- 基油（Ａ）と、金属系清浄剤（Ｂ）を含み、
成分（Ａ）中の炭素数３２以上の重質分（Ｈｆ）の含有割合が、成分（Ａ）の全量基準で、１４．０質量％以上であり、
成分（Ｂ）が、塩基価１００ｍｇＫＯＨ／ｇ以上の過塩基性カルシウムサリシレート（Ｂ１）を含み、
成分（Ｂ）中の成分（Ｂ１）の含有割合が、成分（Ｂ）の全量基準で、３５．０質量％以上である、
潤滑油組成物。 Contains base oil (A) and metal detergent (B),
The content of the heavy fraction (Hf) having 32 or more carbon atoms in the component (A) is 14.0% by mass or more based on the total amount of the component (A),
Component (B) contains overbased calcium salicylate (B1) with a base value of 100 mgKOH/g or more,
The content ratio of component (B1) in component (B) is 35.0% by mass or more based on the total amount of component (B),
Lubricating oil composition. - 成分（Ａ）中の炭素数２１以下の軽質分（Ｌｆ）と、炭素数３２以上の重質分（Ｈｆ）との含有量比［（Ｌｆ）／（Ｈｆ）］が、質量比で、０．０５以上である、請求項１に記載の潤滑油組成物。 The content ratio [(Lf)/(Hf)] of the light fraction (Lf) having 21 or less carbon atoms and the heavy fraction (Hf) having 32 or more carbon atoms in component (A) is 0 in mass ratio. The lubricating oil composition of claim 1, wherein the lubricating oil composition is .05 or greater.
- 成分（Ａ）中の炭素数２１以下の軽質分（Ｌｆ）の含有割合が、成分（Ａ）の全量基準で、１．０質量％以上である、請求項１又は２に記載の潤滑油組成物。 The lubricating oil composition according to claim 1 or 2, wherein the content of light fractions (Lf) having 21 or less carbon atoms in component (A) is 1.0% by mass or more based on the total amount of component (A). thing.
- 成分（Ｂ１）のカルシウム原子換算での含有量が、前記潤滑油組成物の全量基準で、０．０１～０．８０質量％である、請求項１～３のいずれか一項に記載の潤滑油組成物。 The lubricant according to any one of claims 1 to 3, wherein the content of component (B1) in terms of calcium atoms is 0.01 to 0.80% by mass based on the total amount of the lubricating oil composition. oil composition.
- 成分（Ｂ）の金属原子換算での含有量が、前記潤滑油組成物の全量基準で、０．０１～１．００質量％である、請求項１～４のいずれか一項に記載の潤滑油組成物。 The lubricant according to any one of claims 1 to 4, wherein the content of component (B) in terms of metal atoms is 0.01 to 1.00% by mass based on the total amount of the lubricating oil composition. oil composition.
- さらに粘度指数向上剤（Ｃ）を含有する、請求項１～５のいずれか一項に記載の潤滑油組成物。 The lubricating oil composition according to any one of claims 1 to 5, further comprising a viscosity index improver (C).
- 前記潤滑油組成物の４０℃における動粘度が、５０．０ｍｍ２／ｓ以下である、請求項１～６のいずれか一項に記載の潤滑油組成物。 The lubricating oil composition according to any one of claims 1 to 6, wherein the lubricating oil composition has a kinematic viscosity at 40°C of 50.0 mm 2 /s or less.
- 前記潤滑油組成物の粘度指数が、１３０以上である、請求項１～７のいずれか一項に記載の潤滑油組成物。 The lubricating oil composition according to any one of claims 1 to 7, wherein the lubricating oil composition has a viscosity index of 130 or more.
- 前記潤滑油組成物の１５０℃におけるＨＴＨＳ粘度が、２．５ｍＰａ・ｓ以上である、請求項１～８のいずれか一項に記載の潤滑油組成物。 The lubricating oil composition according to any one of claims 1 to 8, wherein the HTHS viscosity at 150° C. of the lubricating oil composition is 2.5 mPa·s or more.
- 前記潤滑油組成物の粘度グレードが、ＳＡＥ Ｊ３００：２０１５による分類で、０Ｗ－２０～０Ｗ－３０である、請求項１～９のいずれか一項に記載の潤滑油組成物。 The lubricating oil composition according to any one of claims 1 to 9, wherein the viscosity grade of the lubricating oil composition is 0W-20 to 0W-30 as classified by SAE J300:2015.
- ディーゼルエンジンに用いられる、請求項１～１０のいずれか一項に記載の潤滑油組成物。 The lubricating oil composition according to any one of claims 1 to 10, which is used in a diesel engine.
- 請求項１～１１のいずれか一項に記載の潤滑油組成物を充填した、内燃機関。 An internal combustion engine filled with the lubricating oil composition according to any one of claims 1 to 11.
- 前記内燃機関が、ディーゼルエンジンである、請求項１２に記載の内燃機関。 The internal combustion engine according to claim 12, wherein the internal combustion engine is a diesel engine.
- 請求項１～１１のいずれか一項に記載の潤滑油組成物を、内燃機関の潤滑に適用する、内燃機関の潤滑方法。 A method for lubricating an internal combustion engine, comprising applying the lubricating oil composition according to any one of claims 1 to 11 to lubricate an internal combustion engine.
- 前記内燃機関が、ディーゼルエンジンである、請求項１４に記載の内燃機関の潤滑方法。 The method for lubricating an internal combustion engine according to claim 14, wherein the internal combustion engine is a diesel engine.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022-088577 | 2022-05-31 | ||
| JP2022088577A JP2023176342A (en) | 2022-05-31 | 2022-05-31 | Lubricant composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023234295A1 true WO2023234295A1 (en) | 2023-12-07 |
Family
ID=89024821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2023/020101 WO2023234295A1 (en) | 2022-05-31 | 2023-05-30 | Lubricating oil composition |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2023176342A (en) |
| WO (1) | WO2023234295A1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1180771A (en) * | 1997-09-11 | 1999-03-26 | Nippon Oil Co Ltd | Lubricating oil composition for diesel engine |
| JP2016196595A (en) * | 2015-04-06 | 2016-11-24 | 東燃ゼネラル石油株式会社 | Lubricant composition |
-
2022
- 2022-05-31 JP JP2022088577A patent/JP2023176342A/en active Pending
-
2023
- 2023-05-30 WO PCT/JP2023/020101 patent/WO2023234295A1/en unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1180771A (en) * | 1997-09-11 | 1999-03-26 | Nippon Oil Co Ltd | Lubricating oil composition for diesel engine |
| JP2016196595A (en) * | 2015-04-06 | 2016-11-24 | 東燃ゼネラル石油株式会社 | Lubricant composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2023176342A (en) | 2023-12-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5502356B2 (en) | Gear oil composition | |
| JP6302458B2 (en) | Lubricating oil composition | |
| JP6027170B1 (en) | Lubricating oil composition for internal combustion engines | |
| JP6721230B2 (en) | Lubricating oil composition, lubricating method, and transmission | |
| JP5053839B2 (en) | Lubricating oil composition | |
| CN108699487B (en) | Lubricating oil composition, lubricating method, and transmission | |
| WO2019189121A1 (en) | Lubricating oil composition and use method therefor | |
| CN108699485B (en) | Lubricating oil composition, lubricating method, and transmission | |
| WO2023234295A1 (en) | Lubricating oil composition | |
| JP2019147864A (en) | Lubricant composition | |
| WO2023182073A1 (en) | Lubricating oil composition | |
| JP7304229B2 (en) | lubricating oil composition | |
| JP7164764B1 (en) | lubricating oil composition | |
| WO2023234294A1 (en) | Lubricating oil composition | |
| JP2023176318A (en) | Lubricant composition | |
| WO2013018907A1 (en) | Lubricant composition for internal combustion engine oil | |
| JP2024034683A (en) | lubricating oil composition | |
| US9771537B2 (en) | Mulitigrade engine oil with improved mini-rotary viscometer results and process for preparing the same | |
| WO2023189697A1 (en) | Lubricant composition | |
| JP2023150884A (en) | lubricating oil composition | |
| WO2022196274A1 (en) | Lubricant composition | |
| WO2022209942A1 (en) | Lubricant composition | |
| WO2023189696A1 (en) | Lubricant composition | |
| WO2022209569A1 (en) | Lubricating oil composition | |
| JP2023151621A (en) | Lubricant composition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 23816052 Country of ref document: EP Kind code of ref document: A1 |