JP5719836B2 - 潤滑油組成物 - Google Patents
潤滑油組成物 Download PDFInfo
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- JP5719836B2 JP5719836B2 JP2012509575A JP2012509575A JP5719836B2 JP 5719836 B2 JP5719836 B2 JP 5719836B2 JP 2012509575 A JP2012509575 A JP 2012509575A JP 2012509575 A JP2012509575 A JP 2012509575A JP 5719836 B2 JP5719836 B2 JP 5719836B2
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- oil
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- 239000000203 mixture Substances 0.000 title claims description 52
- 239000010687 lubricating oil Substances 0.000 title claims description 42
- 150000005690 diesters Chemical class 0.000 claims description 64
- 239000002199 base oil Substances 0.000 claims description 37
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 claims description 29
- 230000001050 lubricating effect Effects 0.000 claims description 20
- 239000003921 oil Substances 0.000 claims description 17
- 239000005635 Caprylic acid (CAS 124-07-2) Substances 0.000 claims description 14
- 229960002446 octanoic acid Drugs 0.000 claims description 14
- -1 polyol ester Chemical class 0.000 claims description 12
- 125000006219 1-ethylpentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])[H] 0.000 claims description 8
- 125000003136 n-heptyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 8
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 claims description 8
- GHVNFZFCNZKVNT-UHFFFAOYSA-N decanoic acid Chemical compound CCCCCCCCCC(O)=O GHVNFZFCNZKVNT-UHFFFAOYSA-N 0.000 claims description 6
- 239000000314 lubricant Substances 0.000 claims description 6
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical group OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 claims description 6
- 229920005862 polyol Polymers 0.000 claims description 6
- 239000005632 Capric acid (CAS 334-48-5) Substances 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 description 24
- 230000008020 evaporation Effects 0.000 description 24
- OBETXYAYXDNJHR-SSDOTTSWSA-M (2r)-2-ethylhexanoate Chemical compound CCCC[C@@H](CC)C([O-])=O OBETXYAYXDNJHR-SSDOTTSWSA-M 0.000 description 13
- OBETXYAYXDNJHR-UHFFFAOYSA-N alpha-ethylcaproic acid Natural products CCCCC(CC)C(O)=O OBETXYAYXDNJHR-UHFFFAOYSA-N 0.000 description 13
- 150000001735 carboxylic acids Chemical class 0.000 description 12
- SDQROPCSKIYYAV-UHFFFAOYSA-N 2-methyloctane-1,8-diol Chemical compound OCC(C)CCCCCCO SDQROPCSKIYYAV-UHFFFAOYSA-N 0.000 description 11
- 239000002994 raw material Substances 0.000 description 11
- MNWFXJYAOYHMED-UHFFFAOYSA-N heptanoic acid Chemical compound CCCCCCC(O)=O MNWFXJYAOYHMED-UHFFFAOYSA-N 0.000 description 10
- 125000000217 alkyl group Chemical group 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- 239000000654 additive Substances 0.000 description 8
- 238000005886 esterification reaction Methods 0.000 description 8
- 239000004519 grease Substances 0.000 description 8
- 239000002253 acid Substances 0.000 description 7
- 230000032050 esterification Effects 0.000 description 7
- 150000002148 esters Chemical class 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000002156 mixing Methods 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 125000004432 carbon atom Chemical group C* 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000003963 antioxidant agent Substances 0.000 description 3
- 150000002009 diols Chemical class 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 3
- 239000003112 inhibitor Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000002562 thickening agent Substances 0.000 description 3
- ALVZNPYWJMLXKV-UHFFFAOYSA-N 1,9-Nonanediol Chemical compound OCCCCCCCCCO ALVZNPYWJMLXKV-UHFFFAOYSA-N 0.000 description 2
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 239000010696 ester oil Substances 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000006078 metal deactivator Substances 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 2
- 239000000344 soap Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical compound O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 description 2
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 2
- OJRJDENLRJHEJO-UHFFFAOYSA-N 2,4-diethylpentane-1,5-diol Chemical compound CCC(CO)CC(CC)CO OJRJDENLRJHEJO-UHFFFAOYSA-N 0.000 description 1
- DHTAIMJOUCYGOL-UHFFFAOYSA-N 2-ethyl-n-(2-ethylhexyl)-n-[(4-methylbenzotriazol-1-yl)methyl]hexan-1-amine Chemical compound C1=CC=C2N(CN(CC(CC)CCCC)CC(CC)CCCC)N=NC2=C1C DHTAIMJOUCYGOL-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 150000001565 benzotriazoles Chemical class 0.000 description 1
- GONOPSZTUGRENK-UHFFFAOYSA-N benzyl(trichloro)silane Chemical compound Cl[Si](Cl)(Cl)CC1=CC=CC=C1 GONOPSZTUGRENK-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 239000012208 gear oil Substances 0.000 description 1
- MNWFXJYAOYHMED-UHFFFAOYSA-M heptanoate Chemical compound CCCCCCC([O-])=O MNWFXJYAOYHMED-UHFFFAOYSA-M 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N n-hexanoic acid Natural products CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- OEIJHBUUFURJLI-UHFFFAOYSA-N octane-1,8-diol Chemical compound OCCCCCCCCO OEIJHBUUFURJLI-UHFFFAOYSA-N 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920013639 polyalphaolefin Polymers 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229960002317 succinimide Drugs 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 150000005691 triesters Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
- C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
- C10M105/32—Esters
- C10M105/38—Esters of polyhydroxy compounds
-
- 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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/283—Esters of polyhydroxy compounds
- C10M2207/2835—Esters of polyhydroxy compounds used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- 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
-
- 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/086—Imides
-
- 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/22—Heterocyclic nitrogen compounds
- C10M2215/223—Five-membered rings containing nitrogen and carbon only
-
- 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/28—Amides; Imides
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/02—Viscosity; Viscosity index
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/02—Pour-point; Viscosity index
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/74—Noack Volatility
-
- 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
- C10N2040/02—Bearings
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/08—Hydraulic fluids, e.g. brake-fluids
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/14—Electric or magnetic purposes
- C10N2040/18—Electric or magnetic purposes in connection with recordings on magnetic tape or disc
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
- Sliding-Contact Bearings (AREA)
Description
式中、R1、R2は、独立に1-エチルペンチル基、n-ヘプチル基又はn-ヘキシル基である。そして、モル比(A:B:C)は、25〜65:30〜50:3〜25の範囲にある。ここで、AはR1、R2が共にn-ヘプチル基又はn-ヘキシル基であるものであり、BはR1、R2の一方が1-エチルペンチル基であるものであり、CはR1、R2が共に1-エチルペンチル基であるものである。
1)流体軸受ユニット:軸外周面とスリーブ内周面のすきまに介在する潤滑油の油膜圧力によって回転軸を支持する軸受部を設け、潤滑剤として本発明の潤滑油組成物を用いた軸受ユニットである。2)流体動圧軸受ユニット:軸外周面とスリーブ内周面の何れか一方に動圧発生溝を設け、潤滑剤として本発明の潤滑油組成物を用いた軸受ユニットである。3)多孔質含油軸受ユニット:本発明の潤滑油組成物を含浸した多孔質含油軸受を有するものである。4)多孔質含油軸受:本発明の潤滑油組成物を含浸した軸受である。この多孔質含油軸受としては、動圧型多孔質含油軸受が好ましく挙げられる。5)スピンドルモータ:上記の軸受ユニットを備えたスピンドルモータである。
300cc四つ口フラスコ、加熱装置、撹拌装置、温度計、窒素通気管及び窒素ライン、ディーンスターク管、冷却管と冷却ラインから構成される反応装置に、脂肪族2価アルコールとして2−メチル−1,8−オクタンジオール24.05g、飽和脂肪族モノカルボン酸(以下、カルボン酸という)としてカプリル酸32.01g、2−エチルへキサン酸54.51gを入れ、テトラキス(IV)(2−エチル−1−ヘキシロキシ)チタネート0.1gを触媒とし、窒素雰囲気にて170℃、48時間攪拌しフルエステル化まで反応させた。反応油中に残ったカルボン酸の大部分を10Torr、170℃にて留去し、その後触媒を失活せしめ、エステル中に残った酸を中和、吸着処理にてエステル中の未反応物や不純物を除去し、ジエステル(D1)を得た。
実施例1と同様の方法で、2−メチル−1,8−オクタンジオール24.05gと、カルボン酸としてカプリル酸31.04g、2−エチルへキサン酸58.65gを原料としたものをエステル化し、ジエステル(D2)を得た。ジエステル(D2)の組成はA:B:C=45.0:44.1:10.9であり、A、B、Cの合計は全組成の96.0%であった。
実施例1と同様の方法で、2−メチル−1,8−オクタンジオール24.05gと、カルボン酸としてカプリル酸30.10g、2−エチルへキサン酸59.53gを原料としたものをエステル化し、ジエステル(D3)を得た。ジエステル(D3)の組成はA:B:C=42.9:45.8:11.3であり、A、B、Cの合計は全組成の95.5%であった。
実施例1と同様の方法で、原料に2−メチル−1,8−オクタンジオール83%、1,9−ノナンジオール15%で構成されるジオール24.05gを用い、それとカルボン酸としてカプリル酸29.04g、2−エチルへキサン酸59.53gを原料としたものをエステル化し、ジエステル(D4)を得た。ジエステル(D4)の組成はA:B:C=39.4:46.6:14.0であり、A、B、Cの合計は全組成の82.8%であった。
実施例2で合成したジエステル(D2)95wt%と、ネオペンチルグリコールのジエステル(Hatco社製)を5wt%を混合し、ジエステル(D5)を得た。
実施例2で合成したジエステル(D2)を70wt%と、H2962を30wt%混合し、ジエステル(D6)を得た。
実施例1と同様の方法で、2−メチル−1,8−オクタンジオール32.05gと、カルボン酸としてエナント酸46.87g、2−エチルへキサン酸68.50gを原料としたものをエステル化し、ジエステル(D11)を得た。ジエステル(D11)の組成はA:B:C=57.2:37.3:5.5であり、A、B、Cの合計は全組成の99.2%であった。
実施例1と同様の方法で、2−メチル−1,8−オクタンジオール32.05gと、カルボン酸としてエナント酸47.01g、2−エチルへキサン酸58.73gを原料としたものをエステル化し、ジエステル(D12)を得た。ジエステル(D12)の組成はA:B:C=62.4:33.2:4.4であり、A、B、Cの合計は全組成の99.2%であった。
実施例1と同様の方法で、2−メチル−1,8−オクタンジオールと、カルボン酸としてカプリル酸、2−エチルへキサン酸を原料としたものをエステル化し、ジエステル(D7)を得た。ジエステル(D7)の組成はA:B:C=74.5:23.5:2.0であり、A、B、Cの合計は全組成の98.0%であった。
実施例4と同様の方法で、原料に2−メチル−1,8−オクタンジオール83%、1,9−ノナンジオール15%で構成されるジオールを用い、それとカルボン酸としてカプリル酸、2−エチルへキサン酸を原料としたものをエステル化し、ジエステル(D8)を得た。ジエステル(D8)の組成はA:B:C=22.9:49.9:14.0であり、A、B、Cの合計は全組成の83.7%であった。
実施例1と同様の方法で、1,8−オクタンジオールと2−エチルへキサン酸を原料としてエステル化し、ジエステル(D9)を得た。
実施例1と同様の方法で、2,4−ジエチル−1,5−ペンタンジオールとカプリル酸を原料としたものをエステル化し、ジエステル(D10)を得た。
添加剤及び略号
L57:アルキルジフェニルアミン(BASF社製イルガノックスL57、酸化防止剤)
IR39:ベンゾトリアゾール誘導体(BASF製イルガメット39、金属不活性剤)
OAS1200:コハク酸イミド(シェブロンケミカル製OAS1200、無灰系分散剤)
実施例2、5又は6で得たジエステル(D2)、(D5)又は(D6)を基油とし、L57を0.5wt%、IR39を0.03wt%、及びOAS1200を1.5wt%配合して潤滑油組成物とした。
比較例3で得たジエステル(D9)を基油とし、L57を0.5wt%、IR39を0.03wt%、及びOAS1200を1.5wt%配合して潤滑油組成物とした。
測定機器はアントンパール製SVM-3000を用いた。
具体的には、実施例9の潤滑油組成物の蒸発減量が最も少なく、回転粘度も基準値以下である。また、基油の一部にポリオールエステルを使用した実施例10及び11も蒸発減量を大きく阻害することなく、粘度を低下させることが確認できた。なお、比較例5の潤滑油組成物は既存基油の中で最もバランスが良いとされ、多くの小型モーターで採用されているが、これを凌駕する性能を持つ潤滑油を開発したことは、小型モーターの高性能化(長寿命、省エネ)に寄与するものといえる。
Claims (6)
- 式(1)において、A:B:Cが、35〜50:40〜50:5〜15の範囲にあることを特徴とする請求項1記載の潤滑油基油。
- 式(1)で示されるジエステルの混合物を70wt%以上含むことを特徴とする請求項1記載の潤滑油基油。
- 40℃での動粘度が9mm2/s未満であり、粘度指数100以上のネオペンチルグリコール骨格を有したポリオールエステルである低粘度油を5〜30wt%含むことを特徴とする請求項1に記載の潤滑油基油。
- 低粘度油が、カプリル酸又はカプリン酸と、ネオペンチルグリコールから得られるポリオールエステルである請求項4記載の潤滑油基油。
- 請求項1〜5のいずれかに記載の潤滑油基油を含むことを特徴とする潤滑油組成物。
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US5861147A (en) | 1997-06-09 | 1999-01-19 | The Procter & Gamble Company | Methods for controlling environmental odors on the body using compositions comprising uncomplexed cyclodextrins and perfume |
JP2013043896A (ja) * | 2011-08-22 | 2013-03-04 | Kyodo Yushi Co Ltd | 流体動圧軸受用潤滑油基油、該基油を含有する流体動圧軸受用潤滑油及び該潤滑油を備えたスピンドルモータ |
KR20130072547A (ko) * | 2011-12-22 | 2013-07-02 | 삼성전기주식회사 | 유체 동압 베어링용 윤활유 조성물 및 이를 이용한 hdd용 모터 |
ES2753598T3 (es) * | 2014-03-03 | 2020-04-13 | Elevance Renewable Sciences | Diésteres ramificados para uso como material base y en aplicaciones de lubricantes |
CN112534027B (zh) | 2018-07-17 | 2022-06-14 | 国立大学法人山梨大学 | 导电性润滑剂 |
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JPH03128991A (ja) * | 1989-07-05 | 1991-05-31 | Kiyouseki Seihin Gijutsu Kenkyusho:Kk | 潤滑油 |
JPH07224289A (ja) * | 1994-02-14 | 1995-08-22 | Kao Corp | 合成潤滑油基油 |
JPH09316029A (ja) * | 1996-05-29 | 1997-12-09 | Kuraray Co Ltd | 脂肪酸ジエステルおよび該脂肪酸ジエステルからなる可塑剤 |
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US20130005630A1 (en) | 2013-01-03 |
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