[go: up one dir, main page]

WO2006129889A1 - Composition de fluide hydraulique pour tampon - Google Patents

Composition de fluide hydraulique pour tampon Download PDF

Info

Publication number
WO2006129889A1
WO2006129889A1 PCT/JP2006/311680 JP2006311680W WO2006129889A1 WO 2006129889 A1 WO2006129889 A1 WO 2006129889A1 JP 2006311680 W JP2006311680 W JP 2006311680W WO 2006129889 A1 WO2006129889 A1 WO 2006129889A1
Authority
WO
WIPO (PCT)
Prior art keywords
group
carbon atoms
hydraulic fluid
fluid composition
less
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2006/311680
Other languages
English (en)
Japanese (ja)
Inventor
Shinichi Shirahama
Toru Aoki
Naozumi Arimoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eneos Corp
Original Assignee
Nippon Oil Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2005164735A external-priority patent/JP4987251B2/ja
Priority claimed from JP2005164736A external-priority patent/JP4815153B2/ja
Application filed by Nippon Oil Corp filed Critical Nippon Oil Corp
Publication of WO2006129889A1 publication Critical patent/WO2006129889A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • C10M161/00—Lubricating compositions characterised by the additive being a mixture of a macromolecular compound and a non-macromolecular compound, each of these compounds being essential
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
    • C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
    • C10M133/16—Amides; 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
    • C10M141/00—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential
    • C10M141/10—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential at least one of them being an organic phosphorus-containing compound
    • 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
    • C10M149/00—Lubricating compositions characterised by the additive being a macromolecular compound containing nitrogen
    • C10M149/12—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M149/14—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds a condensation reaction being involved
    • C10M149/22—Polyamines
    • 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
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/121—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms
    • C10M2207/122—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms monocarboxylic
    • 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
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
    • C10M2207/126—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids monocarboxylic
    • 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
    • C10M2207/281—Esters of (cyclo)aliphatic monocarboxylic acids
    • 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
    • C10M2215/24—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions having hydrocarbon substituents containing thirty or more carbon atoms, e.g. nitrogen derivatives of substituted succinic acid
    • C10M2215/28—Amides; 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/049—Phosphite
    • 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
    • C10N2030/40—Low content or no content compositions
    • C10N2030/44—Boron free or low content boron compositions
    • 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

Definitions

  • the present invention relates to a hydraulic fluid composition for a shock absorber, and more specifically, hydraulic operation for a shock absorber for maintaining high friction between a seal material and a piston port in the shock absorber, and improving vehicle wobbling and riding comfort. It relates to an oil composition.
  • shock absorbers There are various types of shock absorbers, but they basically consist of a valved piston and cylinder (also called an outer cylinder or tube).
  • the piston is fixed to the rod, and the piston slides on the inner surface of the cylinder, and the rod slides on the seal of the rod guide.
  • the shock absorber acts as a buffer by the resistance of the hydraulic oil that passes through the valve with the hydraulic oil and, if necessary, gas.
  • hydraulic fluid for shock absorbers has been used to reduce the seal friction coefficient of hydraulic fluid in order to prevent stick-slip between the shock absorber seal and the rod and to ensure the durability of the seal.
  • additives such as phosphate esters and aliphatic amine compounds that reduce friction are generally added to hydraulic oil (see, for example, Patent Documents 1 to 5). ).
  • shock absorbers for automobiles, etc. are always in a vibrating state, and repeat a slight amplitude even on a paved road with little displacement.
  • the hydraulic damping is very small. It becomes easy to repeat the minute amplitude due to the minimal displacement of the road surface.
  • the vehicle body (sprung load) fluctuated and it was found that the driver and passengers feel uncomfortable. Development of compositions has become necessary.
  • Nitrile rubber or fluorine-based rubber is used as the seal for the shock absorber mouth and mouth guide, and a sliding material called a piston band is attached to the piston. It is important to adjust the friction characteristics of the hydraulic oil according to each material.
  • Patent Document 1 Japanese Patent Laid-Open No. 5-2 5 5 6 8 3
  • Patent Document 2 Japanese Patent Laid-Open No. 7-2 2 4 2 9 3
  • Patent Document 3 Japanese Patent Laid-Open No. 7-2 5 8 6 7 8
  • Patent Document 4 Japanese Patent Laid-Open No. 6-1 2 8 5 8 1
  • Patent Document 5 Japanese Patent Laid-Open No. 2 00 0-1 9 2 0 6 7
  • Patent Document 6 Japanese Patent Application Laid-Open No. 2 00 2-1 9 4 3 7 6
  • a hydraulic oil composition is provided.
  • a hydraulic fluid composition for a shock absorber that can maintain friction at a high level, particularly when using a bitrile-based seal material, and can achieve both stick-slip suppression. Is.
  • the inventors of the present invention are able to maintain a high level of friction when a composition having a specific structure is used, particularly when a tritolic sealant is used.
  • the present invention has found that the damping force at the neutral position of the shock absorber can be increased, the fluctuation of the vehicle body (sprung load) at a small amplitude can be suppressed, and the uncomfortable feeling of the driver and the occupant can be reduced. It came to complete.
  • the present invention provides a lubricating base oil having [I] (A) a phosphoric acid ester having 3 to 10 carbon atoms, a phosphorous acid ester or a salt thereof, and (B) carbon A saturated or unsaturated fatty acid of number 6 to 30 and / or an ester of the fatty acid, or [ ⁇ ] (C1) imino group Z amino group ratio is 15 or less, and the number average molecular weight is A succinic acid (anhydride) monopolyamine reaction product and / or a derivative thereof having an alkyl group or an alkenyl group of 1500 or less,
  • a hydraulic fluid composition for a shock absorber comprising at least one selected from those having an imino group / amino group ratio of less than 3.
  • the present invention provides a lubricant base oil comprising: (A) a phosphoric acid ester having a hydrocarbon group having 3 to 10 carbon atoms, a phosphite ester or a salt thereof; and (B) a carbon number 6 to 3 A hydraulic fluid composition for a shock absorber comprising 0 saturated or unsaturated fatty acid and Z or an ester of the fatty acid, and (C) an ashless dispersant.
  • the present invention also provides a lubricating base oil comprising: (A) a phosphoric acid ester having 3 to 10 carbon atoms, a phosphite or a salt thereof, and (C 1) an imino group Za.
  • Succinic acid (anhydride) having an alkyl group or an alkenyl group having a mino group ratio of 15 or less and a number average molecular weight of 1500 or less, a polyamine reaction product and / or a derivative thereof, C 1 a) Contains at least one selected from those having an imino group amino group ratio of 3 to 15 and essentially free of boron and (C lb) imino group amino group ratio of less than 3.
  • a hydraulic fluid composition for shock absorbers is provided.
  • the present invention provides a lubricating base oil comprising: (A) a phosphoric acid ester having a hydrocarbon group having 3 to 10 carbon atoms, a phosphite ester or a salt thereof; and (B) a carbon number 6 to 3 0 saturated or unsaturated fatty acid and / or ester of the fatty acid, and (C 1) an alkyl group or alkenyl group having an imino group / amino group ratio of 15 or less and a number average molecular weight of 1500 or less.
  • the hydraulic fluid composition for a shock absorber is characterized by containing at least one selected from those having an amino group ratio of less than 3.
  • the present invention also provides the hydraulic fluid composition for a shock absorber according to the above, wherein the component (A) is a hydrogen phosphate having a hydrocarbon group having 3 to 10 carbon atoms. is there.
  • the present invention resides in the hydraulic fluid composition for a shock absorber described above, wherein the component (B) is an unsaturated fatty acid having 12 to 18 carbon atoms and a unsaturated fatty acid ester. .
  • the present invention also resides in a method for increasing the friction between the seal material of the shock absorber and the piston opening using the hydraulic fluid composition for shock absorbers described above.
  • the present invention is a method for achieving both high friction between the sealant material of the shock absorber and the piston rod and suppression of stick-slip using the hydraulic fluid composition for shock absorbers described above.
  • the present invention is the method described above, wherein the sealing material is a nitrile sealing material.
  • the sealing material is a nitrile sealing material.
  • the lubricating base oil in the hydraulic fluid composition for shock absorbers of the present invention is not particularly limited, and mineral base oils and synthetic base oils used for ordinary lubricating oils can be used.
  • mineral oil base oils can be obtained by removing the solvent oil fraction obtained by depressurizing and distilling atmospheric residual oil obtained by atmospheric distillation of crude oil, solvent extraction, hydrogen Base oil produced by isomerization of one or more treatments such as hydrocracking, solvent dewaxing, hydrorefining, etc., or wax isomerized mineral oil, GTLWAX (gastric liquid wax) Etc. can be illustrated.
  • synthetic base oils include polybutene or a hydride thereof; poly- ⁇ -olefins such as 1-octene oligomer, 1-decenoligoma, or a hydride thereof; ditridecyl glutarate, Diesters such as di-2-ethylhexyl adipate, diisodecyl adipate, ditridecinorea dipate, di-2-ethylhexyl sebacate, etc .; neopentyl glycol ester, trimethylolpropane power pre-relate, g Polyol esters such as dimethylolpropane sulfonate, pentaerythritol 1-ethenorehexanoate, pentaerythritol pelargonate; aromatic synthetic oils such as alkylnaphthalene, alkylbenzene and aromatic ester; mixtures thereof Etc. can be illustrated.
  • the mineral base oil, the synthetic base oil, or an arbitrary mixture of two or more selected from these can be used.
  • examples thereof include one or more mineral base oils, one or more synthetic base oils, and a mixed oil of one or more mineral base oils and one or more synthetic base oils.
  • the kinematic viscosity of the lubricating base oil used in the present invention is not particularly limited.
  • the lower limit of the kinematic viscosity at 40 ° C is preferably 3 mm 2 / s, more preferably 6 mm 2 Z s, while the upper limit is Preferably it is 60 mm 2 / s, more preferably 40 mm 2 Z s, more preferably 20 mm 2 Z s, and more preferably 10 0 in that a composition with a lower friction can be obtained. It is desirable that it is not more than mm 2 Z s, particularly preferably not more than 9 mm 2 / s.
  • the viscosity index of the lubricating base oil used in the present invention is not particularly limited and is arbitrary.
  • the damping performance which is a basic performance required for the shock absorber, depends on the viscosity of the hydraulic fluid and depends on the temperature. From the viewpoint of minimizing the change in damping force, the viscosity index is preferably 80 or more, more preferably 95 or more.
  • the hydraulic fluid composition for a shock absorber according to the present invention comprises: (A) a phosphate ester having a hydrocarbon group having 3 to 10 carbon atoms, a phosphite ester, or a salt thereof; B) A saturated or unsaturated fatty acid having 6 to 30 carbon atoms and / or an ester of the fatty acid.
  • (A) phosphate ester, phosphite ester or salt thereof having a hydrocarbon group having 3 to 10 carbon atoms include a phosphate ester represented by the general formula (1). Phosphites represented by the general formula (2), salts thereof and mixtures thereof.
  • RR 2 and R 3 are each independently a hydrogen atom or a hydrocarbon group having 3 to 10 carbon atoms, preferably 4 to 8 carbon atoms, and R 1 , R 2 and R 3 At least one of them is a hydrocarbon group having 3 to 10 carbon atoms.
  • R 4 , R 5 and R 6 are each independently a hydrogen atom or Is a hydrocarbon group having 3 to 10 carbon atoms, preferably 4 to 8 carbon atoms, and at least one of R 4 , R 5 and R 6 is a hydrocarbon group having 3 to 10 carbon atoms.
  • the hydrocarbon group may have one or more heteroatoms selected from a nitrogen atom, a sulfur atom, and an oxygen atom.
  • R 6 is an acidic phosphite diester having a hydrogen atom or an acidic phosphite monoester having R 5 and R 6 is a hydrogen atom, respectively
  • the mutants may be represented by the following general formulas (3) and (4), but they represent the same compound.
  • R 5 H
  • Specific examples of the hydrocarbon group having 3 to 10 carbon atoms as described above include propyl group, butyl group, pentyl group, hexyl group, heptyl group, octyl group, nonyl group, decyl group and the like.
  • Alkyl groups (these alkyl groups may be linear or branched); probenole group, butenol group, pentul group, hexenino group, heptenyl group, octenol group, nonenyl group, decenyl group, etc.
  • the alkenyl group may be linear or branched, and the position of the double bond is arbitrary.
  • Aryl groups such as phenyl, naphthyl, etc .: each alkylaryl group having 7 to 10 carbon atoms such as tolyl, xylyl, ethenylphenyl, propylphenyl, butylphenyl, etc. In a chain May be branched, and the substitution position is arbitrary. ); Each arylalkyl group having 7 to 10 carbon atoms such as benzyl group, phenylethyl group, phenylpropyl group, phenylbutyl group, etc. (The alkyl group may be linear or branched, and the substitution position is also arbitrary.) ); Etc.
  • the component (A) in the hydraulic fluid composition for a shock absorber of the present invention is particularly preferably a hydrogen phosphate having a hydrocarbon group having 3 to 10 carbon atoms represented by the following general formula (5).
  • the content of the component (A) in the hydraulic fluid composition for shock absorbers of the present invention is not particularly limited, but the friction between the sealing material such as a 2-tri-seal material and the mouth is further increased to prevent wear.
  • the amount in terms of phosphorus element is preferably 0.05 to 0.2 mass 0 /. More preferably, it is 0.01 to 0.1% by mass, and particularly preferably 0.01 5 to 0.06% by mass.
  • the component (B) in the hydraulic fluid composition for a shock absorber according to the present invention is a saturated or unsaturated fatty acid having 6 to 30 carbon atoms and / or an ester of the fatty acid.
  • the fatty acid may be a linear fatty acid or a branched fatty acid, may be a saturated fatty acid or an unsaturated fatty acid, and may be a monobasic acid or a polybasic acid.
  • Specific examples of the fatty acid include hexanoic acid, heptanoic acid, octanoic acid, nonanoic acid, decanoic acid, undecanoic acid, dodecanoic acid, tridecanoic acid, tetradecanoic acid, pentadecanoic acid, and hexadecane.
  • saturated or unsaturated monobasic fatty acids having 12 to 18 carbon atoms such as lauric acid, stearic acid, and oleic acid are particularly preferable.
  • fatty acids having 6 to 30 carbon atoms preferably 12 to 18 carbon atoms (which may be linear or branched) and 1 to 30 carbon atoms are preferable.
  • an ester of a monohydric alcohol having 1 to 18 carbon atoms or a polyhydric alcohol and an ester of a monobasic fatty acid and a polyhydric alcohol or an ester of a dibasic fatty acid and a monohydric alcohol is preferred. It is preferably an ester of a monobasic fatty acid and a polyhydric alcohol.
  • Examples of monohydric alcohols include saturated or unsaturated aliphatic alcohols having 1 to 30 carbon atoms, such as methanol, ethanol, propanol, butanol, pentanol, hexanol, heptanol monole, Examples include otatanol, nonanol, decanol, dodecanol, tetradecanol, hexadecanol, octadecanol, oleiranoreconole
  • polyhydric alcohol examples include divalent to hexavalent polyhydric alcoholols (including multimers). Specific examples include ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycolate, glycerin, diglycerin, so / levitane, trimethylolethane, And polyhydric alcohols such as trimethylololepropane, pentaerythritol> ⁇ re, and dipentaerythritol.
  • preferable compounds as esters of monobasic fatty acids and polyhydric alcohols include glycerin monooleate, glycerin dilate, and glycerin tritate.
  • Saturated or unsaturated monobasic fatty acids having 12 to 18 carbon atoms such as oleate, solebitantanate, sonorebitane diolate, sonorebitane trioleate, etc. Can be exemplified.
  • esters of dibasic fatty acids and monohydric alcohols include n-dodecyl succinic acid monomethyl ester, n-dodecyl succinic acid dimethinole ester, and n-tetradecino succinic acid.
  • Monomethylestenole, n-tetradecino] Dimethylolestenole succinate n—Hexadecyl succinic acid monomethyl ester, n—Hexadecyl succinic acid dimethyl ester, n—Octadecinosuccinic acid monomethyl ester, n— Examples thereof include esters of saturated or unsaturated dibasic acids having 12 to 18 carbon atoms and monohydric alcohols having 1 to 18 carbon atoms, such as dimethyl deca succinate.
  • the content of the component (B) in the hydraulic fluid composition for shock absorbers of the present invention does not reduce the friction between the seal material such as a 2-tril seal material and the piston mouth, and does not reduce the stickiness. in that can be expected to improve the flop characteristics, the total amount of the composition, preferably 0.0 0 1-2 mass 0/0, more preferably 0.0 1 to 1 by weight 0/0, the preferred especially 0.02 to 0.1% by mass.
  • the hydraulic fluid composition for a shock absorber according to the present invention preferably further contains (C) an ashless dispersant.
  • any ashless dispersant used in lubricating oils can be used.
  • a nitrogen-containing compound having at least one linear or branched alkyl group having 40 to 400 carbon atoms or an alkyl group in the molecule or a derivative thereof can be used.
  • the alkyl group or alkenyl group has 40 to 40, preferably 60 to 35, carbon atoms. If the alkyl group or alkenyl group has less than 40 carbon atoms, the solubility of the compound in the lubricating base oil will be reduced, whereas if the alkyl group or alkenyl group has more than 400 carbon atoms, lubrication will not occur.
  • the alkyl group or alkenyl group may be linear or branched, but specific examples include specific ligomers such as propylene, 1-butene, isobutylene, and ethylene. And branched alkyl groups and branched alkenyl groups derived from propylene ligomers.
  • Specific examples of the component (c) include the following compounds. One or two or more compounds selected from these can be used.
  • (C3) a polyamine having at least one alkyl group or alkenyl group having 40 to 400 carbon atoms in the molecule, or a derivative thereof
  • Examples of the (C 1) succinic acid (anhydride) monopolyamine reaction product include alkyl or alkenyl succinic acid imide having a monoimide structure, and alkyl or alkenyl succinic acid having a biimide structure. And reaction products having imids or other structures, and mixtures thereof.
  • poly (iso) butenyl succinic acid imide usually poly (iso) butene, chlorinated poly (iso) butene or a mixture of these with maleic anhydride at 100 ° C. to 200 ° C. Poly obtained by reaction
  • Examples of the (C 2) benzylamine include, for example, polyolefins such as propylene ligomer, polybutene, and ethylene 1-olefin copolymer, which are reacted with phenol to form alkylphenol, and then formaldehyde.
  • Examples thereof include benzylamine obtained by reacting polyamines such as dimethylamine, triethylenetetramine, triethylenetetramine, tetraethylenepentamine, and pentaethylenehexamine with Mannich reaction.
  • benzylamine a derivative obtained by acylating the benzylamine obtained as described above with an oxygen-containing organic compound such as carboxylic acid, or an acid or boric acid, phosphoric acid, sulfuric acid, or the like.
  • an oxygen-containing organic compound such as carboxylic acid, or an acid or boric acid, phosphoric acid, sulfuric acid, or the like.
  • the (C 3) polyamine include chlorination of polyolefins such as propylene oligomers, polybutenes, and ethylene- ⁇ -olefin copolymers, and then ammonia, ethylenediamine, diethylenetriamine.
  • polyamines obtained by reacting polyamines such as triethylenetetramine, tetraethylenepentamine, and pentaethylenehexamine.
  • a polyamine derivative a derivative obtained by acylating the polyamine obtained as described above with an oxygen-containing organic compound such as carboxylic acid, or an acid such as boric acid, phosphoric acid, sulfuric acid, or the like
  • an oxygen-containing organic compound such as carboxylic acid, or an acid such as boric acid, phosphoric acid, sulfuric acid, or the like
  • the number average molecular weight of the alkyl group or alkenyl group in the (C) ashless dispersant is usually 700 to 500, but it is possible to maintain a higher seal friction such as a two-trill sealant. In this respect, it is preferably from 90 to 1500, more preferably 1400 or less, further preferably 1300 or less, and particularly preferably 1220 or less.
  • the component (C) of the present invention is not particularly limited in its imino group amino group ratio.
  • the compound containing no imino group such as ethylenediamine mono (alkenyl) succinic acid imide. It can be infinite for compounds that do not contain an amino group such as diethylenetriaminebis (alkenyl) succinic acid imide, but in terms of production cost, it may be 0.1 to 50. preferable.
  • the imino group amino group ratio is preferably 15 or less from the viewpoint of obtaining a composition having a higher flexion, and preferably 1 or more from the viewpoint of stability and production cost. It is.
  • a succinic acid (anhydrous) having a (C 1) imino group noamino group ratio of 15 or less and a number average molecular weight of 1500 or less and having an alkyl group or alkenyl group (polyhydrate) It is particularly preferred to use the reaction products and cocoons or their derivatives.
  • the (C 1) component when the (C 1 a) imino group amino group ratio is 3 to 15, the one that does not essentially contain boron is more suitable for a 2-tolyl-type sealing material, etc. This is preferable because the friction between the sealant and the piston head can be easily maintained at a high level. Also, the ratio of the imino group and the Z amino group of the component (C 1 a) makes the composition of higher friction. It is preferably 3.5 to 12, more preferably 4 to 9, and particularly preferably 4.5 to 6 in that it can be obtained.
  • the component (CI) may contain or not contain boron when the (C 1 b) imino group noamino group ratio is less than 3, but preferably contains boron. .
  • the imino group noamino group ratio is less than 3, it is easy to maintain a high friction between the sealant such as a 2-tril seal and the biston rod, and the imino group Z amino It exhibits a special behavior for boron-containing materials with a base ratio of 3 or more.
  • the imino group amino group ratio of the component (C 1 b) is 0 to less than 3, it is preferably 1 or more, more preferably 1 to 2.5, and particularly preferably 1. 5 to 2.5.
  • the mass ratio of boron content Z nitrogen content (B "N ratio) is not particularly limited, but the sealant and piston port In view of maintaining high friction between the heads and stability when used in combination with component (A), preferably 0.1 to 1, more preferably 0.5 to 1, particularly preferably 0. 7 to 0.9.
  • the imino group represents a group represented by 1 NH—
  • the amino group represents a group represented by 1 NH 2
  • the imino group amino ratio is the amino group in the component (C).
  • the imino group and the amino group and the ratio thereof can be obtained by the following method.
  • Peaks are obtained at (a) chemical shift 6 6 ppm 7 2 ppm and (b) chemical shift 7 4 ppm 7 9 ppm.
  • the peak of (a) is obtained by the reaction of imino group (1NH-) in component (C) with trifluorosuccinic anhydride as shown in the following formula (I).
  • the peak of (b) is obtained by reacting the amino group (one NH 2 ) in component (C) with trifluoroacetic anhydride as shown in the following formula (iii): Peak of group represented by (i) It is estimated that
  • component (C) 0.5 g of component (C) is dissolved in 20 ml of hexane, 1.0 g of trifluoroacetic anhydride is added thereto, and the mixture is reacted at 20 ° C. for 20 minutes while stirring. Thereafter, 10 ml of methanol and 0.5 ml of concentrated hydrochloric acid were added to the reaction product, and stirring was continued at 20 ° C for 20 minutes. Unreacted trifluoroacetic anhydride and the reaction by-product trifluoroacetic acid were added to methanol. Remove into layers. Next, the oil layer is taken out, and hexane is distilled off by distillation to obtain a reaction product of the component (C) and trifluoroacetic acid. Using 100 mg of the reaction product thus obtained as a sample, it is analyzed by i 9 F 1 NMR at a resonance frequency of 5 64.4 MHz.
  • the imino group / amino group ratio in the component (C) defined in the present invention is specified by the peak area of (a) // the ratio of the peak area of (b) obtained by this method.
  • Value that is, the ratio of the nitrogen atom constituting the imino group (one NH-) in the component (C) to the nitrogen atom constituting the amino group (one NH 2 ) in the component (C) .
  • another measurement method using the same theory may be used.
  • the content of the component (C) is usually 0.01 to 5% by mass on the basis of the total amount of the composition, and the content of the component (C) as the nitrogen content is Preferably, 0.001% by mass or more, more preferably 0.002% by mass or more.
  • the content is not less than 0.05% by mass, an effect corresponding to the content cannot be obtained, and the low-temperature characteristics tend to deteriorate, so that it is preferably 0.2% by mass or less, more preferably Is not more than 0.05% by mass, particularly preferably not more than 0.01% by mass.
  • the content of boron is usually 0.001 to 0. 2% by mass, preferably from 0.02 to 0.05% by mass, more preferably from 0.01% by mass or less, particularly preferably from the viewpoint of stability in the presence of component (A).
  • the content is 0 to 8% by mass or less.
  • the hydraulic fluid composition for a shock absorber according to the present invention contains the component (A) and the component (B), or further contains the component (C), so that the piston rod and the sealing material in the fine amplitude region are contained.
  • the friction coefficient can be maintained at a high level and the stick-lip characteristics can be improved, the damping force at the neutral position of the shock absorber is increased, and the fine amplitude This reduces the wobbling of the vehicle body (sprung load) and reduces the discomfort of the driver and passengers.
  • the hydraulic fluid composition for a shock absorber according to the present invention includes an alkyl group having a (C 1) imino group amino group ratio of 15 or less and a number average molecular weight of 1500 or less.
  • a succinic acid having a alkenyl group, a polyamine reaction product and / or a derivative thereof, (C 1 a) imino group / amino group ratio of 3 to 15 and essentially free of boron And (C lb) imino group and at least one selected from those having a Z amino group ratio of less than 3.
  • the number average molecular weight of the alkyl group or alkenyl group in the component (C 1) is 1550 or less, preferably 1400 or less, more preferably 1300 or less, particularly preferably 1 It is desirable to set it to 200 or less.
  • the number average molecular weight is
  • the number average molecular weight is preferably 1500 or more in terms of oil solubility, more preferably 3100 or more, and a higher-friction composition can be obtained. More preferably, it is desirable to set it at 700 or more, particularly preferably 900 or more.
  • the content of the component (C 1) is the composition On the basis of the total amount, it is usually from 0 to 1 to 5% by mass, and the content of the (C 1) component as nitrogen is preferably 0.001% by mass or more, more preferably 0.0 0 2 It is preferably at least 0.2% by mass, particularly preferably at least 0.05% by mass, and since an effect corresponding to the content cannot be obtained and the low-temperature characteristics tend to deteriorate, it is preferably at least 0.2. % By mass or less, more preferably 0.05% by mass or less, particularly preferably 0.01% by mass or less.
  • the content of boron is usually from 0.001 to 0.2% by mass, preferably from 0.002 to 0%, based on the total amount of the composition. 0.5% by mass, and as described later, when the component (A) is used in combination, it is more preferably 0.01% by mass or less, particularly preferably 0.00% by mass or less in terms of stability. Is desirable.
  • the hydraulic fluid composition for a shock absorber according to the present invention contains the above component (C 1) in the base oil, so that it is between the piston mouth and the seal material in the fine amplitude region, particularly a nitrile seal.
  • the friction can be maintained at a high level when the material is used, the damping force at the neutral position of the shock absorber is increased, the fluctuation of the vehicle body (sprung load) at a small amplitude is suppressed, and the driver and It has the effect of reducing passenger discomfort.
  • the component (A) is used in combination, so that the piston rod and the seal material in the fine amplitude region, particularly nitrile, are used. The friction can be further increased when the seal material is used.
  • the component (A) is preferably a hydrogen phosphite represented by the general formula (5).
  • the content when component (A) is contained further increases the friction between a sealing material such as a nitrile sealing material and the mouth, and is expected to have an effect of preventing wear.
  • a sealing material such as a nitrile sealing material
  • the total amount of the composition it is preferably 0.005 to 0.2 mass%, more preferably 0.01 to 0.1 mass%, particularly preferably 0.0, in terms of phosphorus element. 1 5 to 0.06 mass%. Even if it exceeds 0.2% by mass, it is difficult to obtain an effect commensurate with the content, and the oxidation stability tends to deteriorate.
  • the hydraulic fluid composition for shock absorbers according to the present invention is further improved in performance as required.
  • any additive generally used in lubricating oils can be included.
  • additives include (A) component and friction modifiers other than component (B), viscosity index improvers, antiwear agents, antioxidants, fluidity improvers, metal deactivators.
  • various additives such as metal detergents, corrosion inhibitors, antifungal agents, demulsifiers, and coloring agents can be mentioned.
  • any compound usually used as a friction modifier for lubricating oil can be used.
  • molybdenum dithiocarbamate molybdenum dithiophosphine Having at least one straight chain alkyl group or straight chain alkenyl group having 6 to 30 carbon atoms, particularly a straight chain alkyl group or straight chain alkenyl group having 6 to 30 carbon atoms.
  • Ashless friction modifiers such as fatty acid amides, aliphatic amines, aliphatic alcohols, aliphatic ethers, etc., and usually in the range of 0.001 to 5% by mass based on the total amount of the composition. Is possible.
  • any compound usually used as a viscosity index improver for lubricating oils can be used.
  • the weight of one or more monomers selected from various methacrylic acid esters can be used.
  • a so-called non-dispersed viscosity index improver such as a polymer or copolymer or a hydrogenated product thereof, or a so-called dispersed viscosity index improver obtained by copolymerizing various methacrylate esters containing a nitrogen compound.
  • Dispersed or dispersed ethylene- ⁇ -olefin copolymers examples include propylene, 1-butene, 1_pentene, etc.
  • ⁇ -olefin examples include propylene, 1-butene, 1_pentene, etc.
  • hydrides thereof polyisobutylene or examples thereof include hydrogenated products thereof, hydrogenated products of styrene-gen copolymers, styrene-mono-anhydride maleate copolymers, and polyalkylstyrenes.
  • the number average molecular weight of the viscosity index improver is, for example, usually 5,000 to 1,000,000, preferably 100,000 to 900,000 in the case of dispersed and non-dispersed polymethacrylates.
  • 0 polyisobutylene or a hydride thereof
  • 800 to 500,000, preferably 1,000 to 4,000 is an ethylene-one ⁇ -olefin copolymer or its hydrogen.
  • 800 to 500,000, preferably 3,00 to 200,000 is preferably used.
  • the content of the viscosity index improver is usually from 0.0 to 20% by mass based on the total amount of the composition.
  • any compound usually used as an antiwear agent for lubricating oils can be used, and examples thereof include phosphorus and / or sulfur-containing antiwear agents, such as thiophosphates, Phosphate esters, phosphate esters, hydrogen phosphates having a hydrocarbon group with 11 to 30 carbon atoms, derivatives thereof, metal salts thereof, amine salts thereof, and disulfides, sulfides Examples include sulfur-containing compounds such as olefins, sulfurized fats and oils, dithiocarbamate, and zinc dithiocarbamate.
  • These antiwear agents can be contained in the composition of the present invention usually in the range of 0.01 to 5% by mass based on the total amount of the composition.
  • any compound usually used as an antioxidant for lubricating oils can be used.
  • phenolic antioxidants such as phenyl- ⁇ -naphthylamine, alkylphenyl ct-naphthylamine, and dialkyldiphenylamine.
  • These antioxidants can be contained in the composition of the present invention usually in the range of 0.01 to 5% by mass based on the total amount of the composition.
  • any compound usually used as a fluidity improver for lubricating oils can be used, and examples thereof include polymetatalate fluidity improvers.
  • Metal deactivators include imidazoline, pyrimidine derivatives, alkyl thiadiazoles, mercaptobenzothiazoles, benzotriazol or derivatives thereof, 1, 3, 4-thiadiazole polysulfide, 1, 3, 4-thiadiazolyl 1-2 , 5—bisdialkyldithiocarbamate, 2— (alkyldithio) benzimidazole, and i3— (o-carboxybenzylthio) propiononitrile.
  • antifoaming agent examples include silicone, fluorosilicol, and fluoroalkyl ether.
  • metal detergents include alkali metal or alkaline earth metal sulfonates, buinates, salicylates, and phosphonates.
  • corrosion inhibitor examples include benzotriazole series, tritriazole series, thiadiazole series,. And imidazole series compounds.
  • antifungal agent examples include petroleum sulfonate, alkylbenzene sulfonate, dinonylnaphthalene sulfonate, alkenyl succinic acid ester, and polyhydric alcohol ester.
  • demulsifier examples include polyalkylene dallic-based nonionic surfactants such as polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether, and polyoxyethylene alcohol naphthyl ether.
  • polyalkylene dallic-based nonionic surfactants such as polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether, and polyoxyethylene alcohol naphthyl ether.
  • the content is based on the total amount of the composition, and a fluidity improver, metal detergent, corrosion inhibitor, antifungal agent, It is usually selected in the range of 0.05 to 5% by mass for demulsifiers, 0.05 to 1% by mass for metal deactivators, and 0.05 to 1% by mass for antifoaming agents. .
  • the hydraulic fluid composition for a shock absorber according to the present invention maintains a high level of friction between piston rods and seal materials, particularly when a two-trile seal material is used as the seal material. It is possible to increase the damping force at the neutral position of the shock absorber, to suppress the fluctuation of the vehicle body (sprung load) at a small amplitude, and to reduce driver and passenger discomfort.
  • Lubricating oil compositions according to the present invention having the compositions shown in Table 1 (Examples 1 to 2), comparative lubricating oil compositions (Comparative Examples 1 to 3), and reference lubricating oil compositions (Reference Example 1) Were prepared respectively. These compositions were subjected to the following friction test, and the results are shown in Table 1.
  • the compositions according to the present invention (Examples 1 and 2) have a high coefficient of friction between the nitrile sealant and the steel, and have excellent sticky lip characteristics. ing.
  • the component (A) and the component (B) are not used together (Comparative Examples 1 to 3), it can be seen that either the friction coefficient or the stick-lip property is inferior.
  • the composition of Reference Example 1 containing the component (A) and the component (C) can maintain a high coefficient of friction, but is inferior in the stick-rip characteristics.
  • Example 2 The same composition as in Example 2 was evaluated in the same manner except that 0.05% by mass of succinic acid monoester having an alkyl having 12 to 18 carbon atoms was used instead of the component (B) in Example 1. As a result, a similar effect was confirmed.
  • Lubricating oil composition according to the present invention having the composition shown in Table 1 (Examples 3 to 6), comparative lubricating oil composition (Comparative Examples 4 to 6), and friction coefficient (friction) Lubricating oil compositions serving as evaluation criteria were prepared. Friction tests were conducted on these compositions, and the rate of decrease in the friction coefficient with respect to the reference oil was evaluated. The results are shown in Table 2. The smaller the rate of decrease in the coefficient of friction with respect to the reference oil, the higher the seal friction. It means that it is easy to hold.
  • compositions (Examples 3 to 6) containing the component (C 1) satisfying the requirements of the present invention have a small friction reduction rate with respect to the reference oil. Further, when the component (A) is used in combination (Example 6), the friction coefficient can be further increased. On the other hand, when a compound similar to the component (C 1) that does not satisfy the requirements of the present invention is used (Comparative Examples 4 to 6), the rate of decrease in the coefficient of friction with respect to the reference oil increases, and the seal friction It can be seen that it is difficult to maintain a high level.
  • Alkyl group / alkenyl group Polyvinyl group having a number average molecular weight of 1000 and a diluent.
  • Imino group / amino group ratio 5.5: 1, nitrogen content: 2.3 mass%, boron content 0% child
  • B alkyl group / alkenyl group: polyvinyl group having a number average molecular weight of 1000, including diluent.
  • Imino group / amino group ratio 7.0: 1, nitrogen content: 1.9 mass 96, boron content 0 mass%
  • C alkyl group / alkenyl group: polyvinyl group having a number average molecular weight of 1000, including diluent.
  • Imino group / amino group ratio 2.0: 1, nitrogen content: 1.9 mass%, boron content 1.6 mass%
  • Alkyl group / alkenyl group Polyvinyl group having a number average molecular weight of 1000, including a diluent.
  • Imino group / amino group ratio 4.2: 1, nitrogen content: 2.3 mass%, boron content 1.9 mass%
  • alkyl group Z alkenyl group a polybutenyl group having a number average molecular weight of 2200 and a diluent.
  • Imino group / amino group ratio 7.6: 1, nitrogen content: 1.2% by mass, boron content 0% by mass
  • alkyl group alkenyl group polybutenyl group having a number average molecular weight of 1500-2000, including diluent.
  • Imino group / amino group ratio 24: 1, nitrogen content: 1.5 mass "1 ⁇ 2, boron content 0.5 mass%

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)

Abstract

L’invention concerne une composition de fluide hydraulique pour tampons maintenant à un niveau élevé la friction entre le matériau d’étanchéité et la tige de piston dans un tampon pour limiter ainsi l’affaiblissement de la carrosserie de véhicule et améliorer le confort durant la conduite. La composition de fluide hydraulique pour tampons comprend une huile de graissage de base et, intégré à celle-ci, soit [I] (A) un ester phosphorique ou un ester phosphoreux ayant un groupe hydrocarbone en C3-30 ou un sel de l’un quelconque de ces esters et (B) un acide gras (in)saturé en C6-30 et/ou un ester de cet acide gras, soit [II] (C1) un produit de réaction acide succinique (anhydride)/polyamine ayant une proportion de groupe imino/groupe amino de 15 ou moins et un poids moléculaire moyen en nombre de 1500 ou moins et ayant un groupe alkyle ou alcényle et/ou un dérivé du produit de réaction, l’ingrédient (C1) comprenant au moins un élément sélectionné parmi ceux de (C1a) ayant une proportion de groupe imino/groupe amino comprise entre 3 et 15 et ne contenant sensiblement pas de bore et ceux de (C1b) ayant une proportion de groupe imino/groupe amino inférieure à 3.
PCT/JP2006/311680 2005-06-03 2006-06-05 Composition de fluide hydraulique pour tampon Ceased WO2006129889A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2005-164736 2005-06-03
JP2005-164735 2005-06-03
JP2005164735A JP4987251B2 (ja) 2005-06-03 2005-06-03 緩衝器用油圧作動油組成物
JP2005164736A JP4815153B2 (ja) 2005-06-03 2005-06-03 緩衝器用油圧作動油組成物

Publications (1)

Publication Number Publication Date
WO2006129889A1 true WO2006129889A1 (fr) 2006-12-07

Family

ID=37481790

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2006/311680 Ceased WO2006129889A1 (fr) 2005-06-03 2006-06-05 Composition de fluide hydraulique pour tampon

Country Status (1)

Country Link
WO (1) WO2006129889A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55165996A (en) * 1979-06-14 1980-12-24 Nippon Oil Co Ltd Hydraulic fluid composition for damper
JPH04314794A (ja) * 1990-03-31 1992-11-05 Tonen Corp 自動車のサスペンション用油圧作動油
JPH06145684A (ja) * 1992-10-31 1994-05-27 Tonen Corp 油圧作動油組成物
JPH06179885A (ja) * 1992-12-11 1994-06-28 Tonen Corp 油圧作動油組成物
JPH07224293A (ja) * 1994-02-14 1995-08-22 Nippon Oil Co Ltd 緩衝器用油圧作動油組成物
JPH09111277A (ja) * 1995-10-19 1997-04-28 Idemitsu Kosan Co Ltd 油圧作動油組成物
JP2002194376A (ja) * 2000-12-26 2002-07-10 Nippon Mitsubishi Oil Corp 緩衝器用油圧作動油組成物
JP2004035624A (ja) * 2002-06-28 2004-02-05 Nippon Oil Corp 緩衝器用油圧作動油組成物

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55165996A (en) * 1979-06-14 1980-12-24 Nippon Oil Co Ltd Hydraulic fluid composition for damper
JPH04314794A (ja) * 1990-03-31 1992-11-05 Tonen Corp 自動車のサスペンション用油圧作動油
JPH06145684A (ja) * 1992-10-31 1994-05-27 Tonen Corp 油圧作動油組成物
JPH06179885A (ja) * 1992-12-11 1994-06-28 Tonen Corp 油圧作動油組成物
JPH07224293A (ja) * 1994-02-14 1995-08-22 Nippon Oil Co Ltd 緩衝器用油圧作動油組成物
JPH09111277A (ja) * 1995-10-19 1997-04-28 Idemitsu Kosan Co Ltd 油圧作動油組成物
JP2002194376A (ja) * 2000-12-26 2002-07-10 Nippon Mitsubishi Oil Corp 緩衝器用油圧作動油組成物
JP2004035624A (ja) * 2002-06-28 2004-02-05 Nippon Oil Corp 緩衝器用油圧作動油組成物

Similar Documents

Publication Publication Date Title
JP5965231B2 (ja) 緩衝器用潤滑油組成物
US9695379B2 (en) Lubricating oil composition for shock absorber and friction reduction method for shock absorber
JP6353840B2 (ja) 緩衝器用潤滑油組成物
JP5879168B2 (ja) 緩衝器用潤滑油組成物
JP5150154B2 (ja) 緩衝器用潤滑油組成物
WO2008038667A1 (fr) Composition d'huile lubrifiante pour amortisseurs
US9458405B2 (en) Lubricating oil composition
KR20160047471A (ko) 완충기용 윤활유 조성물
JP5483301B2 (ja) 緩衝器用油圧作動油組成物
JP5087262B2 (ja) 自動車緩衝器用潤滑油組成物
JP4870385B2 (ja) 緩衝器用油圧作動油組成物
JP5101877B2 (ja) 緩衝器用油圧作動油組成物
WO2006129889A1 (fr) Composition de fluide hydraulique pour tampon
WO2019098098A1 (fr) Composition d'huile lubrifiante pour un amortisseur
JP5138928B2 (ja) 二輪車のフロントフォーク緩衝器用油圧作動油組成物
WO2006129888A1 (fr) Composition de fluide hydraulique pour tampon
JP4987251B2 (ja) 緩衝器用油圧作動油組成物
JP4815153B2 (ja) 緩衝器用油圧作動油組成物

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 06747269

Country of ref document: EP

Kind code of ref document: A1