JP5952661B2 - コハク酸イミド化合物、潤滑油添加剤及び潤滑油組成物 - Google Patents
コハク酸イミド化合物、潤滑油添加剤及び潤滑油組成物 Download PDFInfo
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- JP5952661B2 JP5952661B2 JP2012151841A JP2012151841A JP5952661B2 JP 5952661 B2 JP5952661 B2 JP 5952661B2 JP 2012151841 A JP2012151841 A JP 2012151841A JP 2012151841 A JP2012151841 A JP 2012151841A JP 5952661 B2 JP5952661 B2 JP 5952661B2
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- Prior art keywords
- lubricating oil
- succinimide compound
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- succinimide
- compound
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- KZNICNPSHKQLFF-UHFFFAOYSA-N dihydromaleimide Natural products O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 title claims description 83
- -1 Succinimide compound Chemical class 0.000 title claims description 72
- 229960002317 succinimide Drugs 0.000 title claims description 69
- 239000010687 lubricating oil Substances 0.000 title claims description 54
- 239000000203 mixture Substances 0.000 title claims description 36
- 239000000654 additive Substances 0.000 title claims description 28
- 230000000996 additive effect Effects 0.000 title claims description 19
- 150000001875 compounds Chemical class 0.000 claims description 36
- 239000002199 base oil Substances 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 11
- 230000001050 lubricating effect Effects 0.000 claims description 11
- 125000000217 alkyl group Chemical group 0.000 claims description 9
- 125000003342 alkenyl group Chemical group 0.000 claims description 8
- 239000003921 oil Substances 0.000 description 15
- 239000002480 mineral oil Substances 0.000 description 9
- 235000010446 mineral oil Nutrition 0.000 description 9
- 229910052796 boron Inorganic materials 0.000 description 8
- 239000003607 modifier Substances 0.000 description 8
- 239000002270 dispersing agent Substances 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 239000008096 xylene Substances 0.000 description 7
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 6
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 239000000314 lubricant Substances 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 239000003963 antioxidant agent Substances 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 5
- 239000004327 boric acid Substances 0.000 description 4
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 4
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- DRSHXJFUUPIBHX-UHFFFAOYSA-N COc1ccc(cc1)N1N=CC2C=NC(Nc3cc(OC)c(OC)c(OCCCN4CCN(C)CC4)c3)=NC12 Chemical compound COc1ccc(cc1)N1N=CC2C=NC(Nc3cc(OC)c(OC)c(OCCCN4CCN(C)CC4)c3)=NC12 DRSHXJFUUPIBHX-UHFFFAOYSA-N 0.000 description 3
- 229920002367 Polyisobutene Polymers 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
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- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical class C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 3
- 238000004821 distillation Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 2
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- 150000001412 amines Chemical class 0.000 description 2
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- 229910052788 barium Inorganic materials 0.000 description 2
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- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 229910052810 boron oxide Inorganic materials 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
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- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 2
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- 229910052757 nitrogen Inorganic materials 0.000 description 2
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- RZRNAYUHWVFMIP-KTKRTIGZSA-N 1-oleoylglycerol Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCC(O)CO RZRNAYUHWVFMIP-KTKRTIGZSA-N 0.000 description 1
- FALRKNHUBBKYCC-UHFFFAOYSA-N 2-(chloromethyl)pyridine-3-carbonitrile Chemical group ClCC1=NC=CC=C1C#N FALRKNHUBBKYCC-UHFFFAOYSA-N 0.000 description 1
- 238000012935 Averaging Methods 0.000 description 1
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
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- MQHWFIOJQSCFNM-UHFFFAOYSA-L Magnesium salicylate Chemical compound [Mg+2].OC1=CC=CC=C1C([O-])=O.OC1=CC=CC=C1C([O-])=O MQHWFIOJQSCFNM-UHFFFAOYSA-L 0.000 description 1
- XQVWYOYUZDUNRW-UHFFFAOYSA-N N-Phenyl-1-naphthylamine Chemical compound C=1C=CC2=CC=CC=C2C=1NC1=CC=CC=C1 XQVWYOYUZDUNRW-UHFFFAOYSA-N 0.000 description 1
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- 229910019142 PO4 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
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- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- AVVIDTZRJBSXML-UHFFFAOYSA-L calcium;2-carboxyphenolate;dihydrate Chemical compound O.O.[Ca+2].OC1=CC=CC=C1C([O-])=O.OC1=CC=CC=C1C([O-])=O AVVIDTZRJBSXML-UHFFFAOYSA-L 0.000 description 1
- ZMRQTIAUOLVKOX-UHFFFAOYSA-L calcium;diphenoxide Chemical compound [Ca+2].[O-]C1=CC=CC=C1.[O-]C1=CC=CC=C1 ZMRQTIAUOLVKOX-UHFFFAOYSA-L 0.000 description 1
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- RZRNAYUHWVFMIP-HXUWFJFHSA-N glycerol monolinoleate Natural products CCCCCCCCC=CCCCCCCCC(=O)OC[C@H](O)CO RZRNAYUHWVFMIP-HXUWFJFHSA-N 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003879 lubricant additive Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229940072082 magnesium salicylate Drugs 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 239000002530 phenolic antioxidant Substances 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 150000008301 phosphite esters Chemical class 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- DOIRQSBPFJWKBE-UHFFFAOYSA-N phthalic acid di-n-butyl ester Natural products CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 1
- 229920001281 polyalkylene Polymers 0.000 description 1
- 229920013639 polyalphaolefin Polymers 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 229920013636 polyphenyl ether polymer Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 229940014800 succinic anhydride Drugs 0.000 description 1
- YPMOSINXXHVZIL-UHFFFAOYSA-N sulfanylideneantimony Chemical compound [Sb]=S YPMOSINXXHVZIL-UHFFFAOYSA-N 0.000 description 1
- 150000003580 thiophosphoric acid esters Chemical class 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 150000003738 xylenes Chemical class 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/30—Introducing nitrogen atoms or nitrogen-containing groups
- C08F8/32—Introducing nitrogen atoms or nitrogen-containing groups by reaction with amines
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
- C10M133/52—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of 30 or more atoms
- C10M133/56—Amides; Imides
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen used as base material
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/287—Partial esters
- C10M2207/289—Partial esters containing free hydroxy groups
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
- C10M2209/084—Acrylate; Methacrylate
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
- C10M2215/064—Di- and triaryl amines
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- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
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- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
- C10M2219/046—Overbased sulfonic acid salts
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- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/041—Triaryl phosphates
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
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- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/04—Molecular weight; Molecular weight distribution
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- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
- C10N2040/045—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for continuous variable transmission [CVT]
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/25—Internal-combustion engines
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/25—Internal-combustion engines
- C10N2040/252—Diesel engines
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/25—Internal-combustion engines
- C10N2040/255—Gasoline engines
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Lubricants (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Pyrrole Compounds (AREA)
Description
[式(1)中、R1は数平均分子量500以上5000未満のアルキル基又は数平均分子量500以上5000未満のアルケニル基を示し、同一分子中の2つのR1は互いに同一でも異なっていてもよく、nは3以上20以下の整数を示す。]
[式(2)中、R1は数平均分子量500以上5000未満のアルキル基又は数平均分子量500以上5000未満のアルケニル基を示す。]
[式(3)中、nは3以上20以下の整数を示す。]
本発明の第2実施形態に係るコハク酸イミド化合物は、下記一般式(2)で表される化合物と、下記一般式(3)で表される化合物との反応により得られるコハク酸イミド化合物である。
[式(2)中、R1は数平均分子量500以上5000未満のアルキル基又は数平均分子量500以上5000未満のアルケニル基を示す。]
[式(3)中、nは3以上20以下の整数を示す。]
[式(4)中、R1は数平均分子量500以上5000未満のアルキル基又は数平均分子量500以上5000未満のアルケニル基を示し、R2は−NH2又は下記一般式(5):
(式(5)中、R1は数平均分子量500以上5000未満のアルキル基又は数平均分子量500以上5000未満のアルケニル基を示す。)
で表される基を示し、nは3以上20以下の整数を示し、n個のR2のうち少なくとも1つは一般式(5)で表される基である。]
必要に応じて反応溶媒を用いることが出来、溶媒としては、一般式(2)で表される化合物と一般式(3)で表される化合物を溶解するものが好ましく、具体的には有機溶媒であり、エタノール、トルエン、キシレン類などが例示できる。
本実施形態に係る潤滑油添加剤は、上記の第1実施形態又は第2実施形態に係るコハク酸イミド化合物を含有する。当該潤滑油添加剤は、第1実施形態又は第2実施形態に係るコハク酸イミド化合物のみからなるものであってもよく、第1実施形態又は第2実施形態に係るコハク酸イミド化合物と他の添加剤との混合物であってもよい。また、当該潤滑油添加剤は、添加剤を溶解するための希釈剤をさらに含有してもよい。
本発明の第4実施形態に係る潤滑油組成物は、潤滑油基油と、上記第1実施形態又は第2実施形態に係るコハク酸イミド化合物とを含有する。なお、当該潤滑油組成物には、潤滑油基油と、上記第3実施形態に係る潤滑油添加剤とを含有する態様が包含される。
合成装置を組み、500mLの4口フラスコに、一般式(2)で表され、R1が数平均分子量1,000のポリイソブテニル基である化合物69.90gをはかりとり、4口フラスコ内を窒素置換した。
一方、スクリュー管に、一般式(3)で表され、nが3である化合物14.2gをはかりとり、それにキシレン50mlを加えて溶液を得た。この溶液を、4口フラスコに装着した滴下ロートに移した。また、滴下を開始する前に4口フラスコ内に150mlのキシレンをロートを用いて加えた。上記の溶液を滴下ロートから165℃にて1時間15分かけて滴下し、さらに、滴下終了後、300rpmで撹拌しながら165℃で2時間反応させた。
反応終了後、エバポレータ及びストリッピングにより溶媒を除去し、目的の生成物86.10gを得た。
IR及びGPC分析により、得られた生成物が、一般式(1)で表され、R1が数平均分子量1,000のポリイソブテニル基であり、nが3であるコハク酸イミド化合物(以下、「コハク酸イミド化合物I−a」という。)であることを確認した。生成物のIRチャートを図1に示す。
合成装置を組み、500mLの4口フラスコに、一般式(2)で表され、R1が数平均分子量2,300のポリイソブテニル基である化合物69.90gをはかりとり、4口フラスコ内を窒素置換した。
一方、スクリュー管に、一般式(3)で表され、nが3である化合物6.11gをはかりとり、それにキシレン50mlを加えて溶液を得た。この溶液を、4口フラスコに装着した滴下ロートに移した。また、滴下を開始する前に4口フラスコ内に150mlのキシレンをロートを用いて加えた。上記の溶液を滴下ロートから165℃にて1時間15分かけて滴下し、さらに、滴下終了後、300rpmで撹拌しながら165℃で2時間反応させた。
反応終了後、エバポレータ及びストリッピングにより溶媒を除去し、目的の生成物69.2gを得た。
IR及びGPC分析により、得られた生成物が、一般式(1)で表され、R1が数平均分子量2,300のポリイソブテニル基であり、nが3であるコハク酸イミド化合物(以下、「コハク酸イミド化合物I−b」という。)であることを確認した。
2000mLのオートクレーブに、ポリイソブテン(数平均分子量1000)1.0molと、無水マレイン酸1.0molとを入れ、1.5時間かけて220℃まで昇温させ、220℃に達してから4時間反応させた。反応終了後、得られた生成物にn−ヘキサンを加え攪拌し、その液をろ過してスラッジを取り除いた。ろ液を常圧蒸留でn−ヘキサンを除去後、減圧下220℃で無水マレイン酸を除去し、マレイン化ポリイソブテンを得た。
2Lセパラブルフラスコに、ジエチレントリアミン1.7mol、キシレンを入れた。次に、キシレンに溶解させた得られたマレイン化ポリブテン0.17molを滴下させながら、145〜155℃で11時間反応させた。反応終了後、常圧蒸留で溶媒を除去し、減圧蒸留で残留ジエチレントリアミンを除去し、コハク酸イミド化合物IIを得た。
実施例3〜8においては、それぞれ、潤滑油基油としてのSAE10留分(100℃動粘度4.1mm2/s)の鉱油、コハク酸イミド化合物I−a又はI−b並びに以下に示す添加剤を用いて、表1に示す組成を有する潤滑油組成物を調製した。
比較例2、3においては、それぞれ、潤滑油基油としてのSAE10留分(100℃動粘度4.1mm2/s)の鉱油、コハク酸イミド化合物II並びに以下に示す添加剤を用いて、表2に示す組成を有する潤滑油組成物を調製した。また、比較例4においては、潤滑油基油としてのSAE10留分(100℃動粘度4.1mm2/s)の鉱油及び以下に示す添加剤を用いて、表2に示す組成を有する潤滑油組成物を調製した。
ポリメタクリレート:平均分子量20,000
アミン系酸化防止剤:ジフェニルアミン
トリクレジルホスフェノート
カルシウムスルホネート:300TBN
無灰系油性剤:グリセリンモノオレート
Claims (5)
- 請求項1又は2に記載のコハク酸イミド化合物を含有する潤滑油添加剤。
- 潤滑油基油と、請求項1又は2に記載のコハク酸イミド化合物とを含有する潤滑油組成物。
- 潤滑油基油と、請求項1又は2に記載のコハク酸イミド化合物とを含有する無段変速機用潤滑油組成物。
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