JP2962950B2 - Hydraulic fluid composition for shock absorber - Google Patents

Hydraulic fluid composition for shock absorber

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Publication number
JP2962950B2
JP2962950B2 JP4301576A JP30157692A JP2962950B2 JP 2962950 B2 JP2962950 B2 JP 2962950B2 JP 4301576 A JP4301576 A JP 4301576A JP 30157692 A JP30157692 A JP 30157692A JP 2962950 B2 JP2962950 B2 JP 2962950B2
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JP
Japan
Prior art keywords
group
isomers
shock absorber
formula
composition
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.)
Expired - Lifetime
Application number
JP4301576A
Other languages
Japanese (ja)
Other versions
JPH06128581A (en
Inventor
亨 宮川
茂明 平田
美津雄 岡田
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
Nisseki Mitsubishi KK
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
Application filed by Nisseki Mitsubishi KK filed Critical Nisseki Mitsubishi KK
Priority to JP4301576A priority Critical patent/JP2962950B2/en
Priority to DE69318095T priority patent/DE69318095T2/en
Priority to EP93116704A priority patent/EP0593068B1/en
Publication of JPH06128581A publication Critical patent/JPH06128581A/en
Priority to US08/499,104 priority patent/US5561104A/en
Application granted granted Critical
Publication of JP2962950B2 publication Critical patent/JP2962950B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/041—Siloxanes with specific structure containing aliphatic substituents
    • C10M2229/0415—Siloxanes with specific structure containing aliphatic substituents used as base material
    • C—CHEMISTRY; METALLURGY
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    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/042—Siloxanes with specific structure containing aromatic substituents
    • C10M2229/0425—Siloxanes with specific structure containing aromatic substituents used as base material
    • C—CHEMISTRY; METALLURGY
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    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/043—Siloxanes with specific structure containing carbon-to-carbon double bonds
    • C10M2229/0435—Siloxanes with specific structure containing carbon-to-carbon double bonds used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/044—Siloxanes with specific structure containing silicon-to-hydrogen bonds
    • C10M2229/0445—Siloxanes with specific structure containing silicon-to-hydrogen bonds used as base material
    • C—CHEMISTRY; METALLURGY
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    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/045—Siloxanes with specific structure containing silicon-to-hydroxyl bonds
    • C10M2229/0455—Siloxanes with specific structure containing silicon-to-hydroxyl bonds 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
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/046—Siloxanes with specific structure containing silicon-oxygen-carbon bonds
    • C10M2229/0465—Siloxanes with specific structure containing silicon-oxygen-carbon bonds 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
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/047—Siloxanes with specific structure containing alkylene oxide groups
    • C10M2229/0475—Siloxanes with specific structure containing alkylene oxide groups 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
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/048—Siloxanes with specific structure containing carboxyl groups
    • C10M2229/0485—Siloxanes with specific structure containing carboxyl groups 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
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
    • 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
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
    • C10M2229/0505—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon 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
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
    • C10M2229/051—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing halogen
    • C10M2229/0515—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing halogen 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
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
    • C10M2229/052—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing nitrogen
    • C10M2229/0525—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing nitrogen 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
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
    • C10M2229/053—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing sulfur
    • C10M2229/0535—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing sulfur 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
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
    • C10M2229/054—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing phosphorus
    • C10M2229/0545—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing phosphorus used as base material
    • 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
    • C10N2040/06—Instruments or other precision apparatus, e.g. damping fluids

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Lubricants (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【産業上の利用分野】本発明は緩衝器用油圧作動油組成
物に関し、詳しくは特に自動車の懸架装置（ショックア
ブソーバー、アクティブサスペンション、ステーダンパ
ー、エンジンダンパー等）に適する緩衝器用油圧作動油
組成物に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic oil composition for a shock absorber, and more particularly to a hydraulic oil composition for a shock absorber suitable for a suspension system of an automobile (shock absorber, active suspension, stay damper, engine damper, etc.). .

【０００２】[0002]

【従来の技術】従来より自動車の懸架装置（ショックア
ブソーバー、アクティブサスペンション、ステーダンパ
ー、エンジンダンパー等）に使用される緩衝器用油圧作
動油としては、摩擦低減特性と摩耗防止特性とを付与す
るため、リン酸エステルおよび／または亜リン酸エステ
ルを添加したものが知られていた。またその摩擦低減特
性をさらに向上するため、脂肪酸、脂肪族アルコール、
脂肪酸エステル、脂肪族アミン等の油性剤を併用したも
のも多用されてきた。2. Description of the Related Art Conventionally, a hydraulic fluid for a shock absorber used for a suspension system (a shock absorber, an active suspension, a stay damper, an engine damper, etc.) of an automobile has been provided with a friction reducing property and a wear preventing property. It has been known to add a phosphoric acid ester and / or a phosphite. In order to further improve its friction reducing properties, fatty acids, fatty alcohols,
Those using oily agents such as fatty acid esters and aliphatic amines in combination have also been widely used.

【０００３】緩衝器用油圧差動油は、上述のとおり、摩
擦面における摩擦を低減すると同時に摩擦面の摩耗を防
止するという性能が要求される潤滑油である。近年、摩
擦面の摩擦低減を材料面から図る目的でテフロン樹脂を
含浸させたブッシュ材を使用する場合が多くなってき
た。また特にガス封入型や減衰力可変型の緩衝器の使用
が増加してきたため、緩衝器の摩擦面にかかる荷重が増
加し、使用条件が厳しくなってきた。As described above, the hydraulic differential oil for a shock absorber is a lubricating oil that is required to have a performance of reducing friction on a friction surface and at the same time preventing wear of the friction surface. In recent years, a bush material impregnated with Teflon resin has been used in many cases for the purpose of reducing friction of the friction surface from the material side. In particular, since the use of gas-filled type or variable damping type shock absorbers has increased, the load applied to the friction surface of the shock absorber has increased, and the use conditions have become more severe.

【０００４】緩衝器用油圧作動油に対する上述のような
使用環境の変化に伴い、従来のリン酸エステルおよび／
または亜リン酸エステルを添加しただけのもの、および
これに脂肪酸、脂肪族アルコール、脂肪酸エステル等の
油性剤を併用したものでは摩擦面の摩耗が大きく、また
摩擦低減効果が乏しいという問題が生じてきた。またリ
ン酸エステルおよび／または亜リン酸エステルと油性剤
の脂肪族アミンを併用した場合には、新油時の摩耗防止
効果や摩擦低減効果にはある程度優れるものの、その耐
久性に乏しく、使用により摩擦係数が大きく増加した
り、摩擦面の摩耗によって生じた球状粒子が摩擦面であ
るテフロン樹脂含浸ブッシュ材表面に付着するという問
題が生じることが判った。[0004] With the above-mentioned changes in the use environment of the hydraulic fluid for shock absorbers, conventional phosphate esters and / or
In addition, in the case of only adding a phosphite, or in combination with an oily agent such as a fatty acid, an aliphatic alcohol, or a fatty acid ester, a problem arises in that the friction surface has a large wear and the friction reducing effect is poor. Was. In addition, when a phosphate ester and / or a phosphite and an aliphatic amine as an oil agent are used in combination, the anti-wear effect and the friction reduction effect at the time of new oil are excellent to some extent, but the durability is poor. It has been found that problems such as a large increase in the coefficient of friction and a problem that spherical particles produced by wear of the friction surface adhere to the surface of the Teflon resin-impregnated bush material as the friction surface.

【０００５】このため、緩衝器用油圧作動油に対して
は、従来からの要求性能に加えて、新規なテフロン樹脂
含浸ブッシュ材に対する適応性に優れ、かつ摩擦低減効
果と摩耗防止効果の耐久性（使用による経時変化が少な
い）に優れるという新たな要求性能が重視されるように
なり、これらの要求性能を満足する新規な緩衝器用油圧
作動油の開発が熱望されていた。[0005] Therefore, in addition to the conventional required performance, the hydraulic fluid for a shock absorber is excellent in adaptability to a new Teflon resin-impregnated bush material, and has durability (friction reduction effect and wear prevention effect). Therefore, new performance requirements, that is, superior performance with little change over time due to use, have been emphasized, and the development of a new hydraulic fluid for shock absorbers that satisfies these performance requirements has been eagerly desired.

【０００６】[0006]

【発明が解決しようとする課題】本発明は、テフロン樹
脂含浸ブッシュ材に対する適応性に優れ、かつ摩擦低減
効果と摩耗防止効果の耐久性（使用による経時変化が少
ない）に優れる緩衝器用油圧作動油組成物を提供するこ
とを目的とする。SUMMARY OF THE INVENTION The present invention provides a hydraulic fluid for a shock absorber which is excellent in adaptability to a Teflon resin-impregnated bushing material, and which has excellent friction reducing effect and wear preventing effect durability (there is little change with use). It is intended to provide a composition.

【０００７】[0007]

【課題を解決するための手段】本発明者らは上記課題を
克服すべく研究を重ねた結果、リン酸エステルおよび／
または亜リン酸エステルと脂肪族アミンのアルキレンオ
キシドを併用することにより、両者の相乗効果によって
優れた性能を有する緩衝器用油圧作動油が得られること
を見出し、本発明を完成するに至った。Means for Solving the Problems The present inventors have conducted various studies to overcome the above-mentioned problems, and as a result, have found that phosphate esters and / or
Alternatively, they have found that by using a phosphite and an alkylene oxide of an aliphatic amine in combination, a hydraulic oil for a shock absorber having excellent performance can be obtained by a synergistic effect of the two, and the present invention has been completed.

【０００８】すなわち、本発明は、潤滑油基油に対し、
（Ａ）リン酸エステルおよび／または亜リン酸エステ
ル、（Ｂ）脂肪族アミンのアルキレンオキシド付加物、
を必須の成分として配合してなることを特徴とする緩衝
器用油圧作動油組成物を提供するものである。That is, the present invention relates to a lubricating base oil,
(A) a phosphoric acid ester and / or a phosphite, (B) an alkylene oxide adduct of an aliphatic amine,
Is provided as an essential component to provide a hydraulic oil composition for a shock absorber.

【０００９】以下、本発明の内容をより詳細に説明す
る。本発明における潤滑油基油としては、特に限定され
るものではなく、通常潤滑油の基油として使用されてい
るものであれば鉱油系、合成系を問わず使用できる。Hereinafter, the contents of the present invention will be described in more detail. The lubricating base oil in the present invention is not particularly limited, and any lubricating base oil may be used as long as it is usually used as a base oil for lubricating oils.

【００１０】鉱油系潤滑油基油としては、例えば、原油
を常圧蒸留および減圧蒸留して得られた潤滑油留分を、
溶剤脱れき、溶剤抽出、水素化分解、溶剤脱ろう、接触
脱ろう、水素化精製、硫酸洗浄、白土処理等の精製処理
を適宜組み合わせて精製したパラフィン系、ナフテン系
等の油が使用できる。また、合成系潤滑油基油として
は、例えば、ポリα−オレフィン（ポリブテン、１−オ
クテンオリゴマー、１−デセンオリゴマー等）、アルキ
ルベンゼン、アルキルナフタレン、ジエステル（ジトリ
デシルグルタレート、ジ２−エチルヘキシルアジペー
ト、ジイソデシルアジペート、ジトリデシルアジペー
ト、ジ２−エチルヘキシルセバケート等）、ポリオール
エステル（トリメチロールプロパンカプリレート、トリ
メチロールプロパンペラルゴネート、ペンタエリスリト
ール２−エチルヘキサノエート、ペンタエリスリトール
ペラルゴネート等）、ポリオキシアルキレングリコー
ル、ポリフェニルエーテル、シリコーン油、パーフルオ
ロアルキルエーテル等が使用できる。これらの基油は単
独でも、２種以上組み合わせて使用してもよいが、本発
明においてはゴムシール材との適合性等の点から鉱油系
潤滑油基油が好ましく用いられる。[0010] As the mineral oil-based lubricating base oil, for example, a lubricating oil fraction obtained by distilling crude oil under normal pressure and reduced pressure is used.
Paraffinic and naphthenic oils can be used, which are purified by appropriately combining solvent dewatering, solvent extraction, hydrocracking, solvent dewaxing, catalytic dewaxing, hydrorefining, sulfuric acid washing, and clay treatment. Examples of the synthetic lubricating base oil include poly-α-olefins (polybutene, 1-octene oligomer, 1-decene oligomer, etc.), alkylbenzene, alkylnaphthalene, diester (ditridecyl glutarate, di-2-ethylhexyl adipate). Diisodecyl adipate, ditridecyl adipate, di-2-ethylhexyl sebacate, etc.), polyol esters (trimethylolpropane caprylate, trimethylolpropaneperargonate, pentaerythritol 2-ethylhexanoate, pentaerythritol pelargonate, etc.), polyoxyalkylene Glycol, polyphenyl ether, silicone oil, perfluoroalkyl ether and the like can be used. These base oils may be used alone or in combination of two or more, but in the present invention, a mineral oil-based lubricating base oil is preferably used from the viewpoint of compatibility with a rubber seal material and the like.

【００１１】また本発明において使用する潤滑油基油の
粘度は任意であるが、一般の緩衝器に要求される減衰力
に適合させる必要性から、通常、４０℃における粘度が
８〜６０ｃＳｔのものが好ましく用いられ、１０〜４０
ｃＳｔのものがより好ましく用いられる。Although the viscosity of the lubricating base oil used in the present invention is arbitrary, it is usually required that the viscosity at 40 ° C. is 8 to 60 cSt because of the necessity of adjusting to the damping force required for general shock absorbers. Are preferably used, and 10 to 40
Those of cSt are more preferably used.

【００１２】一方、本発明の緩衝器用油圧作動油組成物
において必須の添加剤である（Ａ）成分はリン酸エステ
ルおよび／または亜リン酸エステルである。On the other hand, the component (A) which is an essential additive in the hydraulic fluid composition for a shock absorber according to the present invention is a phosphoric acid ester and / or a phosphite.

【００１３】ここでいうリン酸エステルとは下記の一般
式（１）で表される化合物を意味しており、また亜リン
酸エステルとは下記の一般式（２）で表される化合物を
意味している。The term "phosphate ester" as used herein means a compound represented by the following general formula (1), and the term "phosphite" means a compound represented by the following general formula (2). doing.

【００１４】[0014]

【化４】 Embedded image

【００１５】[0015]

【化５】 Embedded image

【００１６】上記（１）および（２）式中、Ｒ１、
Ｒ２、Ｒ４およびＲ５は、同一でも異なっていてもよ
く、それぞれ炭素数８〜２０のアルキル基またはアルケ
ニル基を示し、Ｒ３およびＲ６は、水素を示す。In the above formulas (1) and (2), R 1 ,
R 2 , R 4 and R 5 may be the same or different and each represents an alkyl group or an alkenyl group having 8 to 20 carbon atoms, and R 3 and R 6 represent hydrogen.

【００１７】Ｒ１およびＲ４としては、例えばオクチル
基（全ての異性体を含む）、ノニル基（全ての異性体を
含む）、デシル基（全ての異性体を含む）、ウンデシル
基（全ての異性体を含む）、ドデシル基（全ての異性体
を含む）、トリデシル基（全ての異性体を含む）、テト
ラデシル基（全ての異性体を含む）、ペンタデシル基
（全ての異性体を含む）、ヘキサデシル基（全ての異性
体を含む）、ヘプタデシル基（全ての異性体を含む）、
オクタデシル基（全ての異性体を含む）、ノナデシル基
（全ての異性体を含む）、エイコシル基（全ての異性体
を含む）等のアルキル基；オクテニル基（全ての異性体
を含む）、ノネニル基（全ての異性体を含む）、デセニ
ル基（全ての異性体を含む）、ウンデセニル基（全ての
異性体を含む）、ドデセニル基（全ての異性体を含
む）、トリデセニル基（全ての異性体を含む）、テトラ
デセニル基（全ての異性体を含む）、ペンタデセニル基
（全ての異性体を含む）、ヘキサデセニル基（全ての異
性体を含む）、ヘプタデセニル基（全ての異性体を含
む）、オクタデセニル基（全ての異性体を含む）、ノナ
デセニル基（全ての異性体を含む）、エイコセニル基
（全ての異性体を含む）等のアルケニル基を挙げること
ができる。As R 1 and R 4 , for example, an octyl group (including all isomers), a nonyl group (including all isomers), a decyl group (including all isomers), an undecyl group (including all isomers) Dodecyl group (including all isomers), tridecyl group (including all isomers), tetradecyl group (including all isomers), pentadecyl group (including all isomers), Hexadecyl group (including all isomers), heptadecyl group (including all isomers),
Alkyl groups such as octadecyl group (including all isomers), nonadecyl group (including all isomers), and eicosyl group (including all isomers); octenyl group (including all isomers), nonenyl group (Including all isomers), decenyl group (including all isomers), undecenyl group (including all isomers), dodecenyl group (including all isomers), tridecenyl group (including all isomers) ), Tetradecenyl group (including all isomers), pentadecenyl group (including all isomers), hexadecenyl group (including all isomers), heptadecenyl group (including all isomers), octadecenyl group (including Examples include alkenyl groups such as all isomers), nonadecenyl group (including all isomers), and eicosenyl group (including all isomers).

【００１８】一方、Ｒ２およびＲ５としては、例えばオ
クチル基（全ての異性体を含む）、ノニル基（全ての異
性体を含む）、デシル基（全ての異性体を含む）、ウン
デシル基（全ての異性体を含む）、ドデシル基（全ての
異性体を含む）、トリデシル基（全ての異性体を含
む）、テトラデシル基（全ての異性体を含む）、ペンタ
デシル基（全ての異性体を含む）、ヘキサデシル基（全
ての異性体を含む）、ヘプタデシル基（全ての異性体を
含む）、オクタデシル基（全ての異性体を含む）、ノナ
デシル基（全ての異性体を含む）、エイコシル基（全て
の異性体を含む）等のアルキル基；オクテニル基（全て
の異性体を含む）、ノネニル基（全ての異性体を含
む）、デセニル基（全ての異性体を含む）、ウンデセニ
ル基（全ての異性体を含む）、ドデセニル基（全ての異
性体を含む）、トリデセニル基（全ての異性体を含
む）、テトラデセニル基（全ての異性体を含む）、ペン
タデセニル基（全ての異性体を含む）、ヘキサデセニル
基（全ての異性体を含む）、ヘプタデセニル基（全ての
異性体を含む）、オクタデセニル基（全ての異性体を含
む）、ノナデセニル基（全ての異性体を含む）、エイコ
セニル基（全ての異性体を含む）等のアルケニル基を挙
げることができる。On the other hand, R 2 and R 5 are, for example, an octyl group (including all isomers), a nonyl group (including all isomers), a decyl group (including all isomers), an undecyl group (including all isomers). Dodecyl group (including all isomers), tridecyl group (including all isomers), tetradecyl group (including all isomers), pentadecyl group (including all isomers) ), Hexadecyl group (including all isomers), heptadecyl group (including all isomers), octadecyl group (including all isomers), nonadecyl group (including all isomers), eicosyl group (all Alkyl group such as octenyl group (including all isomers), nonenyl group (including all isomers), decenyl group (including all isomers), undecenyl group (including all isomers) Including body ), Dodecenyl group (including all isomers), tridecenyl group (including all isomers), tetradecenyl group (including all isomers), pentadecenyl group (including all isomers), hexadecenyl group (including all isomers) ), Heptadecenyl group (including all isomers), octadecenyl group (including all isomers), nonadecenyl group (including all isomers), eicosenyl group (including all isomers) And the like.

【００１９】本発明において、（Ａ）成分の（１）式で
表されるリン酸エステルとしては、特に摩耗防止効果お
よび摩擦低減効果に優れるという点から、Ｒ１およびＲ
２が炭素数８〜２０の、直鎖状または分枝状の、アルキ
ル基もしくはアルケニル基から選ばれた基であり、かつ
Ｒ３が水素の化合物であるが、Ｒ１およびＲ２が炭素数
１２〜１８の直鎖アルキル基もしくは直鎖アルケニル基
から選ばれた基であり、かつＲ３が水素である化合物が
より好ましい。In the present invention, as the phosphate ester represented by the formula (1) of the component (A), R 1 and R 1 are particularly preferred in that they are excellent in a wear prevention effect and a friction reduction effect.
2 is 8 to 20 carbon atoms, linear or branched, a group selected from alkyl or alkenyl group, and although R 3 is a compound of hydrogen, R 1 and R 2 carbon atoms Compounds which are groups selected from 12 to 18 straight-chain alkyl groups or straight-chain alkenyl groups and wherein R 3 is hydrogen are more preferred.

【００２０】また、（Ａ）成分の（２）式で表される亜
リン酸エステルとしては、（１）式で表されるリン酸エ
ステルの場合と同様に、特に摩耗防止効果および摩擦低
減効果に優れるという点から、Ｒ４およびＲ５が炭素数
８〜２０の、直鎖状または分枝状の、アルキル基もしく
はアルケニル基から選ばれた基であり、かつＲ６が水素
の化合物であるが、Ｒ４およびＲ５が炭素数１２〜１８
の直鎖アルキル基もしくは直鎖アルケニル基から選ばれ
た基であり、かつＲ６が水素である化合物がより好まし
い。As the phosphite represented by the formula (2) of the component (A), as in the case of the phosphate represented by the formula (1), the anti-wear effect and the friction reduction effect are particularly effective. R 4 and R 5 are groups having 8 to 20 carbon atoms and selected from linear or branched alkyl groups or alkenyl groups, and R 6 is a hydrogen compound. There, R 4 and R 5 are 12 to 18 carbon atoms
Are more preferably selected from the group consisting of a straight-chain alkyl group and a straight-chain alkenyl group, and R 6 is hydrogen.

【００２１】本発明の（Ａ）成分であるリン酸エステル
および／または亜リン酸エステルとして特に好ましい化
合物としては、具体的には例えば、ジオクチルアシッド
フォスフェート（ジカプリルアシッドフォスフェー
ト）、ジデシルアシッドフォスフェート、ジドデシルア
シッドフォスフェート（ジラウリルアシッドフォスフェ
ート）、ジテトラデシルアシッドフォスフェート（ジミ
リスチルアシッドフォスフェート）、ジヘキサデシルア
シッドフォスフェート（ジパルミチルアシッドフォスフ
ェート）、ジオクタデシルアシッドフォスフェート（ジ
ステアリルアシッドフォスフェート）、ジ−９−オクタ
デセニルアシッドフォスフェート（ジオレイルフォスフ
ェート）、ジオクチルハイドロジェンフォスファイト
（ジカプリルハイドロジェンフォスファイト）、ジデシ
ルハイドロジェンフォスファイト、ジドデシルハイドロ
ジェンフォスファイト（ジラウリルハイドロジェンフォ
スファイト）、ジテトラデシルハイドロジェンフォスフ
ァイト（ジミリスチルハイドロジェンフォスファイ
ト）、ジヘキサデシルハイドロジェンフォスファイト
（ジパルミチルハイドロジェンフォスファイト）、ジオ
クタデシルハイドロジェンフォスファイト（ジステアリ
ルハイドロジェンフォスファイト）、ジ−９−オクタデ
セニルハイドロジェンフォスファイト（ジオレイルハイ
ドロジェンフォスファイト）およびこれらの混合物等が
挙げられる。Particularly preferred compounds as the phosphoric acid ester and / or phosphite as the component (A) of the present invention include, for example, dioctyl acid phosphate (dicapril acid phosphate) and didecyl acid phosphate. Fate, didodecyl acid phosphate (dilauryl acid phosphate), ditetradecyl acid phosphate (dimyristyl acid phosphate), dihexadecyl acid phosphate (dipalmityl acid phosphate), dioctadecyl acid phosphate ( Distearyl acid phosphate), di-9-octadecenyl acid phosphate (dioleyl phosphate), dioctyl hydrogen phosphate (dicapril hydrogen) Phosphite), didecyl hydrogen phosphite, didodecyl hydrogen phosphite (dilauryl hydrogen phosphite), ditetradecyl hydrogen phosphite (dimyl still hydrogen phosphite), dihexadecyl hydrogen phosphite (Dipalmityl hydrogen phosphite), dioctadecyl hydrogen phosphite (distearyl hydrogen phosphite), di-9-octadecenyl hydrogen phosphite (dioleyl hydrogen phosphite) and mixtures thereof Is mentioned.

【００２２】本発明の緩衝器用潤滑油組成物において、
（Ａ）成分のリン酸エステルおよび／または亜リン酸エ
ステルの配合量は任意であるが、通常、組成物全量基準
での含有量が好ましくは０．０５〜１０重量％、より好
ましくは０．１〜５重量％となるように配合するのが望
ましい。In the lubricating oil composition for a shock absorber according to the present invention,
The compounding amount of the phosphoric acid ester and / or the phosphite as the component (A) is arbitrary, but usually the content based on the total amount of the composition is preferably 0.05 to 10% by weight, more preferably 0.1 to 10% by weight. It is desirable to mix them in an amount of 1 to 5% by weight.

【００２３】また、本発明においてもう一つの必須の添
加剤である（Ｂ）成分は脂肪族アミンのアルキレンオキ
シド付加物である。ここでいう脂肪族アミンのアルキレ
ンオキシド付加物とは下記の一般式（３）で表される化
合物を意味している。The component (B) which is another essential additive in the present invention is an alkylene oxide adduct of an aliphatic amine. Here, the alkylene oxide adduct of an aliphatic amine means a compound represented by the following general formula (3).

【００２４】[0024]

【化６】 Embedded image

【００２５】上式中、Ｒ7 は炭素数８〜２２の、直鎖状
または分枝状の、アルキル基もしくはアルケニル基を示
し、Ｒ8 およびＲ9 は同一でも異なっていてもよく、そ
れぞれ炭素数２〜４の直鎖状または分枝状のアルキレン
基を示している。またｍおよびｎは同一でも異なってい
ても良く、それぞれ０〜１０の数であり、かつｍ＋ｎ＝
１〜１０、好ましくは１〜５である数を示している。In the above formula, R 7 represents a linear or branched alkyl or alkenyl group having 8 to 22 carbon atoms, and R 8 and R 9 may be the same or different, and Shows a linear or branched alkylene group of Formulas 2 to 4. M and n may be the same or different, each is a number from 0 to 10, and m + n =
The numbers are 1 to 10, preferably 1 to 5.

【００２６】Ｒ7 としては、例えばオクチル基（全ての
異性体を含む）、ノニル基（全ての異性体を含む）、デ
シル基（全ての異性体を含む）、ウンデシル基（全ての
異性体を含む）、ドデシル基（全ての異性体を含む）、
トリデシル基（全ての異性体を含む）、テトラデシル基
（全ての異性体を含む）、ペンタデシル基（全ての異性
体を含む）、ヘキサデシル基（全ての異性体を含む）、
ヘプタデシル基（全ての異性体を含む）、オクタデシル
基（全ての異性体を含む）、ノナデシル基（全ての異性
体を含む）、エイコシル基（全ての異性体を含む）、ヘ
ンエイコシル基（全ての異性体を含む）、ドコシル基
（全ての異性体を含む）等のアルキル基やオクテニル基
（全ての異性体を含む）、ノネニル基（全ての異性体を
含む）、デセニル基（全ての異性体を含む）、ウンデセ
ニル基（全ての異性体を含む）、ドデセニル基（全ての
異性体を含む）、トリデセニル基（全ての異性体を含
む）、テトラデセニル基（全ての異性体を含む）、ペン
タデセニル基（全ての異性体を含む）、ヘキサデセニル
基（全ての異性体を含む）、ヘプタデセニル基（全ての
異性体を含む）、オクタデセニル基（全ての異性体を含
む）、ノナデセニル基（全ての異性体を含む）、エイコ
セニル基（全ての異性体を含む）、ヘンエイコセニル基
（全ての異性体を含む）、ドコセニル基（全ての異性体
を含む）等のアルケニル基を挙げることができる。また
Ｒ8 およびＲ9 としては、例えばエチレン基、トリメチ
レン基、１−メチルエチレン基、２−メチルエチレン
基、テトラメチレン基、１−メチルトリメチレン基、２
−メチルトリメチレン基、３−メチルトリメチレン基、
１−エチルエチレン基、２−エチルエチレン基、１，１
−ジメチルエチレン基、１，２−ジメチルエチレン基、
２，２−ジメチルエチレン基等が挙げられる。As R 7 , for example, an octyl group (including all isomers), a nonyl group (including all isomers), a decyl group (including all isomers), and an undecyl group (including all isomers) Dodecyl group (including all isomers),
Tridecyl group (including all isomers), tetradecyl group (including all isomers), pentadecyl group (including all isomers), hexadecyl group (including all isomers),
Heptadecyl group (including all isomers), octadecyl group (including all isomers), nonadecyl group (including all isomers), eicosyl group (including all isomers), heneicosyl group (including all isomers) Alkyl group such as docosyl group (including all isomers), octenyl group (including all isomers), nonenyl group (including all isomers), decenyl group (including all isomers) Undecenyl group (including all isomers), dodecenyl group (including all isomers), tridecenyl group (including all isomers), tetradecenyl group (including all isomers), pentadecenyl group (including All isomers), hexadecenyl group (including all isomers), heptadecenyl group (including all isomers), octadecenyl group (including all isomers), nonadecenyl group Including all isomers), including eicosenyl groups (all isomers), including heneicosenyl groups (all isomers), it may be mentioned alkenyl groups such as docosenyl group (including all isomers). R 8 and R 9 are, for example, an ethylene group, a trimethylene group, a 1-methylethylene group, a 2-methylethylene group, a tetramethylene group, a 1-methyltrimethylene group,
-Methyltrimethylene group, 3-methyltrimethylene group,
1-ethylethylene group, 2-ethylethylene group, 1,1
-Dimethylethylene group, 1,2-dimethylethylene group,
Examples include a 2,2-dimethylethylene group.

【００２７】本発明において、（Ｂ）成分の（３）式で
表される脂肪族アミンのアルキレンオキシド付加物とし
ては、特に摩擦低減効果に優れるという点から、Ｒ7 が
炭素数１２〜１８の直鎖アルキル基もしくは直鎖アルケ
ニル基から選ばれた基であり、かつＲ8 およびＲ9 がエ
チレン基である化合物が好ましい。In the present invention, as the alkylene oxide adduct of the aliphatic amine represented by the formula (3) of the component (B), R 7 has 12 to 18 carbon atoms because it is particularly excellent in friction reducing effect. A compound which is a group selected from a straight-chain alkyl group or a straight-chain alkenyl group and wherein R 8 and R 9 are ethylene groups is preferred.

【００２８】本発明の（Ｂ）成分である脂肪族アミンの
アルキレンオキシド付加物として特に好ましい化合物と
しては、具体的には例えば、オクチルアミン（カプリル
アミン）、デシルアミン、ドデシルアミン（ラウリルア
ミン）、テトラデシルアミン（ミリスチルアミン）、ヘ
キサデシルアミン（パルミチルアミン）、オクタデシル
アミン（ステアリルアミン）、９−オクタデセニルアミ
ン（オレイルアミン）等の脂肪族アミンのエチレンオキ
シド付加物およびこれらの混合物等が挙げられる。Particularly preferred compounds as the alkylene oxide adduct of the aliphatic amine as the component (B) of the present invention include, for example, octylamine (caprylamine), decylamine, dodecylamine (laurylamine), Examples thereof include ethylene oxide adducts of aliphatic amines such as decylamine (myristylamine), hexadecylamine (palmitylamine), octadecylamine (stearylamine), and 9-octadecenylamine (oleylamine), and mixtures thereof.

【００２９】本発明の緩衝器用潤滑油組成物において、
（Ｂ）成分の脂肪族アミンのアルキレンオキシド付加物
の配合量は任意であるが、通常、組成物全量基準での含
有量が好ましくは０．０５〜１０重量％、より好ましく
は０．１〜５重量％となるように配合するのが望まし
い。In the lubricating oil composition for a shock absorber of the present invention,
The compounding amount of the alkylene oxide adduct of the aliphatic amine as the component (B) is arbitrary, but usually the content based on the total amount of the composition is preferably 0.05 to 10% by weight, more preferably 0.1 to 10% by weight. It is desirable to mix them so as to be 5% by weight.

【００３０】本発明においては上述のように、潤滑油基
油に対して（Ａ）成分のリン酸エステルおよび／または
亜リン酸エステルと（Ｂ）成分の脂肪族アミンのアルキ
レンオキシド付加物を配合するだけで優れた性能を有す
る緩衝器用潤滑油組成物を得ることができるが、その各
種性能をさらに高める目的で公知の潤滑油添加剤を単独
で、または数種類組み合わせた形で使用することができ
る。In the present invention, as described above, an alkylene oxide adduct of a phosphate ester and / or phosphite as the component (A) and an aliphatic amine as the component (B) is blended with the lubricating base oil. It is possible to obtain a lubricating oil composition for a shock absorber having excellent performance by simply performing the above-mentioned methods, and it is possible to use a known lubricating oil additive alone or in a combination of several types for the purpose of further enhancing its various performances. .

【００３１】これらの添加剤としては例えば、脂肪族ア
ルコール、脂肪酸、脂肪族アミン、脂肪酸アミド等、本
発明の成分以外の摩擦低減剤；フェノール系、アミン
系、硫黄系、ジチオリン酸亜鉛系、フェノチアジン系等
の酸化防止剤；硫化油脂、サルファイド、ジチオリン酸
亜鉛等の極圧剤；石油スルフォネート、ジノニルナフタ
レンスルフォネート等の錆止め剤；ベンゾトリアゾー
ル、チアジアゾール等の金属不活性化剤；アルカリ土類
金属スルフォネート、アルカリ土類金属フェネート、ア
ルカリ土類金属サリチレート、アルカリ土類金属ホスフ
ォネート等の金属系清浄剤；こはく酸イミド、こはく酸
エステル、ベンジルアミン等の無灰分散剤；メチルシリ
コーン、フルオロシリコーン等の消泡剤；ポリメタクリ
レート、ポリイソブチレン、ポリスチレン等の粘度指数
向上剤、流動点降下剤等が挙げられる。Examples of these additives include friction reducing agents other than the components of the present invention, such as aliphatic alcohols, fatty acids, aliphatic amines and fatty acid amides; phenolic, amine, sulfur, zinc dithiophosphate, phenothiazines. Antioxidants such as oils; extreme pressure agents such as sulfurized oils, sulfides and zinc dithiophosphate; rust inhibitors such as petroleum sulfonates and dinonylnaphthalene sulfonates; metal deactivators such as benzotriazole and thiadiazole; alkaline earths Metallic detergents such as metal sulfonates, alkaline earth metal phenates, alkaline earth metal salicylates, alkaline earth metal phosphonates; ashless dispersants such as succinimide, succinate, benzylamine; methyl silicone, fluorosilicone, etc. Antifoaming agent; polymethacrylate, polyisobutyl Emissions, viscosity index improvers, such as polystyrene, and a pour point depressants and the like.

【００３２】これらの添加剤の添加量は任意であるが、
通常、消泡剤の含有量は０．０００５〜１重量％、粘度
指数向上剤の含有量は１〜３０重量％、金属不活性化剤
の含有量は０．００５〜１重量％、その他の添加剤の含
有量は、それぞれ０．１〜１５重量％（いずれも組成物
全量基準）である。The amounts of these additives are optional.
Usually, the content of the defoamer is 0.0005 to 1% by weight, the content of the viscosity index improver is 1 to 30% by weight, the content of the metal deactivator is 0.005 to 1% by weight, The content of each additive is 0.1 to 15% by weight (all based on the total amount of the composition).

【００３３】[0033]

【実施例】以下、本発明の内容を実施例および比較例に
よりさらに具体的に説明するが、本発明はこれらの内容
に何ら限定されるものではない。EXAMPLES Hereinafter, the content of the present invention will be described more specifically with reference to examples and comparative examples, but the present invention is not limited to these contents.

【００３４】実施例１〜３および比較例１〜４ 表１に示す組成により、本発明に係る緩衝器用潤滑油組
成物を調製した（実施例１〜３）。これらの組成物に対
して以下に示す実機耐久試験でその摩擦低減効果および
摩耗防止効果を評価した。 Examples 1 to 3 and Comparative Examples 1 to 4 Lubricating oil compositions for shock absorbers according to the present invention were prepared according to the compositions shown in Table 1 (Examples 1 to 3). The friction reducing effect and the wear preventing effect of these compositions were evaluated by the following actual machine durability test.

【００３５】また比較のため、本発明の（Ａ）成分を単
独で使用した場合（比較例１）、（Ｂ）成分を単独で使
用した場合（比較例２）、（Ｂ）成分の代わりに脂肪族
アミンを用いた場合（比較例３）および（Ａ）成分の代
わりに脂肪酸を用いた場合（比較例４）についても同様
の実機耐久試験で評価した。For comparison, when the component (A) of the present invention was used alone (Comparative Example 1), when the component (B) was used alone (Comparative Example 2), instead of the component (B), In the case of using an aliphatic amine (Comparative Example 3) and the case of using a fatty acid instead of the component (A) (Comparative Example 4), the same actual machine durability test was used.

【００３６】＜実機耐久試験＞市販のストラット型ショ
ックアブソーバー２本を用い、以下の試験条件で同時に
加振回数２００万回の耐久試験を行なった。 試験油温 ：８０℃ 試験油量 ：３３０ｍｌ／本 横荷重 ：２００Ｋｇｆ 加振全振幅：５０ｍｍ 加振速度 ：０．５ｍ／ｓ<Durability test of actual machine> Using two commercially available strut-type shock absorbers, a durability test was carried out at the same time under the following test conditions with 2 million vibrations. Test oil temperature: 80 ° C Test oil amount: 330 ml / piece Lateral load: 200 Kgf Vibration total amplitude: 50 mm Vibration speed: 0.5 m / s

【００３７】 摩擦低減効果 加振回数０回時（耐久試験初期）と加振回数２００万回
時（耐久試験終了時）におけるそれぞれのショックアブ
ソーバーの摩擦面における摩擦係数を測定し、表１に示
した。Friction Reduction Effect The friction coefficient on the friction surface of each shock absorber was measured when the number of vibrations was 0 (initial of the durability test) and when the number of vibrations was 2,000,000 (at the end of the durability test). Was.

【００３８】 摩耗防止効果 耐久試験終了後にショックアブソーバーを分解し、その
摩擦面（シリンダー、ピストン、ロッド、オイルシー
ル）の表面状態を目視で評価し、その結果を表１に示し
た。なお摩耗防止効果の判定基準は０〜５（最良＝５）
の６段階で表した。Abrasion Prevention Effect After the endurance test, the shock absorber was disassembled and the surface condition of its friction surface (cylinder, piston, rod, oil seal) was visually evaluated. The results are shown in Table 1. The criteria for determining the wear prevention effect are 0 to 5 (best = 5).
In six stages.

【００３９】[0039]

【表１】 [Table 1]

【００４０】実施例の結果から明らかなとおり、本発明
に係る緩衝器用潤滑油組成物（実施例１〜３）は耐久初
期の摩擦低減効果に優れるとともに、その経時変化が少
ないという優れた性能を有している。また耐久試験終了
時でも摩擦面の摩耗が少なく、摩耗防止効果の面でも優
れるものである。As is evident from the results of the examples, the lubricating oil compositions for shock absorbers according to the present invention (Examples 1 to 3) are excellent in the effect of reducing friction in the initial stage of durability and have the excellent performance of little change with time. Have. Further, even at the end of the durability test, the friction surface has little wear and is excellent in terms of the effect of preventing wear.

【００４１】それに対して本発明の（Ａ）成分であるリ
ン酸エステルおよび／または亜リン酸エステルを単独で
使用した場合（比較例１）、（Ｂ）成分である脂肪族ア
ミンのアルキレンオキシド付加物を単独で使用した場合
（比較例２）、（Ｂ）成分の代わりに脂肪族アミンを用
いた場合（比較例３）および（Ａ）成分の代わりに脂肪
酸を用いた場合（比較例４）には、いずれも耐久初期の
摩擦低減効果は優れているものの、その経時変化が大き
い。また摩耗防止効果の面でも本発明の組成物より大き
く劣るものである。On the other hand, when the phosphoric acid ester and / or phosphite which is the component (A) of the present invention is used alone (Comparative Example 1), the alkylene oxide addition of the aliphatic amine which is the component (B) When the product was used alone (Comparative Example 2), when an aliphatic amine was used instead of the component (B) (Comparative Example 3), and when a fatty acid was used instead of the component (A) (Comparative Example 4) In any case, although the effect of reducing friction in the early stage of durability is excellent, the change with time is large. In addition, the anti-wear effect is significantly inferior to the composition of the present invention.

【００４２】[0042]

【発明の効果】以上説明したように、本発明の緩衝器用
油圧作動油組成物は、テフロン樹脂含浸ブッシュ材に対
する適応性に優れ、かつ摩擦低減効果と摩耗防止効果の
耐久性（使用による経時変化が少ない）に優れる。As described above, the hydraulic fluid composition for a shock absorber according to the present invention is excellent in adaptability to a Teflon resin-impregnated bush material, and has the durability of the friction reducing effect and the wear preventing effect (change over time due to use). Is less).

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｃ１０Ｎ 30:06 40:06 40:08 (56)参考文献 特開 平２−51591（ＪＰ，Ａ) 特開 平５−53895（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) C10M 141/10 C10M 137/02 - 137/04 C10M 133/08 C10N 30:06 C10N 40:06 C10N 40:08 ＥＰＡＴ（ＱＵＥＳＴＥＬ) ＷＰＩ／Ｌ（ＱＵＥＳＴＥＬ)────────────────────────────────────────────────── (5) Continuation of the front page (51) Int.Cl. 6 Identification code FI C10N 30:06 40:06 40:08 (56) References JP-A-2-51591 (JP, A) JP-A-5-53895 (JP, A) (58) Fields investigated (Int. Cl. 6 , DB name) C10M 141/10 C10M 137/02-137/04 C10M 133/08 C10N 30:06 C10N 40:06 C10N 40:08 EPAT (QUESTEL) WPI / L (QUESTEL)

Claims (7)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】 潤滑油基油に対し、（Ａ）以下の一般式
（１）で表されるリン酸エステルおよび／または以下の
一般式（２）で表される亜リン酸エステル、 【化１】 （上記（１）式中、Ｒ１およびＲ２は、同一でも異なっ
ていてもよく、それぞれ炭素数８〜２０のアルキル基ま
たはアルケニル基を示し、Ｒ３は、水素を示す。） 【化２】 （上記（２）式中、Ｒ４およびＲ５は、同一でも異なっ
ていてもよく、それぞれ炭素数８〜２０のアルキル基ま
たはアルケニル基を示し、Ｒ６は、水素を示す。）なら
びに、 （Ｂ）下記の一般式（３）で表される脂肪族アミンのア
ルキレンオキシド付加物、 【化３】 （上記（３）式中、Ｒ７は、炭素数８〜２２のアルキル
基またはアルケニル基を示し、Ｒ８およびＲ９は、同一
でも異なっていてもよく、それぞれ炭素数２〜４のアル
キレン基を示し、ｍおよびｎは、同一でも異なっていて
もよく、それぞれ０〜１０の数であり、かつｍ＋ｎ＝１
〜１０である数を示す。）を必須の成分として配合して
なることを特徴とする緩衝器用油圧作動油組成物。1. A lubricating base oil, comprising: (A) a phosphate ester represented by the following general formula (1) and / or a phosphite ester represented by the following general formula (2): 1) (In the formula (1), R 1 and R 2 may be the same or different and each represents an alkyl group or an alkenyl group having 8 to 20 carbon atoms, and R 3 represents hydrogen.) ] (In the formula (2), R 4 and R 5 may be the same or different and each represents an alkyl group or an alkenyl group having 8 to 20 carbon atoms, and R 6 represents hydrogen.) B) an alkylene oxide adduct of an aliphatic amine represented by the following general formula (3): (In the formula (3), R 7 represents an alkyl group or an alkenyl group having 8 to 22 carbon atoms, and R 8 and R 9 may be the same or different and each have an alkylene group having 2 to 4 carbon atoms. And m and n may be the same or different, each is a number from 0 to 10, and m + n = 1
Indicates a number that is from 10 to 10. ) As an essential component. 【請求項２】 式（１）のＲ１およびＲ２ならびに式
（２）のＲ４およびＲ５が、それぞれ直鎖状の、アルキ
ル基またはアルケニル基であることを特徴とする請求項
１に記載の緩衝器用油圧作動油組成物。2. The method according to claim 1, wherein R 1 and R 2 in the formula (1) and R 4 and R 5 in the formula (2) are each a straight-chain alkyl group or alkenyl group. The hydraulic fluid composition for a shock absorber according to the above. 【請求項３】 式（３）のＲ７が、直鎖状の、炭素数１
２〜１８の、アルキル基またはアルケニル基であること
を特徴とする請求項１または２に記載の緩衝器用油圧作
動油組成物。3. The compound of the formula (3) wherein R 7 is a linear,
The hydraulic fluid composition for a shock absorber according to claim 1, wherein the composition is 2 to 18 alkyl groups or alkenyl groups. 【請求項４】 式（３）のＲ８およびＲ９が、それぞれ
エチレン基であることを特徴とする請求項１〜３に記載
の緩衝器用油圧作動油組成物。4. The hydraulic oil composition for a shock absorber according to claim 1, wherein R 8 and R 9 in the formula (3) are each an ethylene group. 【請求項５】 式（３）のｍ＋ｎが１〜５であることを
特徴とする請求項１〜４に記載の緩衝器用油圧作動油組
成物。5. The hydraulic oil composition for a shock absorber according to claim 1, wherein m + n in the formula (3) is 1 to 5. 【請求項６】 （Ａ）成分の含有量が、組成物全量基準
で０．０５〜１０重量％であることを特徴とする請求項
１〜５に記載の緩衝器用油圧作動油組成物。6. The hydraulic oil composition for a shock absorber according to claim 1, wherein the content of the component (A) is 0.05 to 10% by weight based on the total amount of the composition. 【請求項７】 （Ｂ）成分の含有量が、組成物全量基準
で０．０５〜１０重量％であることを特徴とする請求項
１〜６に記載の緩衝器用油圧作動油組成物。7. The hydraulic oil composition for a shock absorber according to claim 1, wherein the content of the component (B) is 0.05 to 10% by weight based on the total amount of the composition.
JP4301576A 1992-10-15 1992-10-15 Hydraulic fluid composition for shock absorber Expired - Lifetime JP2962950B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP4301576A JP2962950B2 (en) 1992-10-15 1992-10-15 Hydraulic fluid composition for shock absorber
DE69318095T DE69318095T2 (en) 1992-10-15 1993-10-15 Shock fluid
EP93116704A EP0593068B1 (en) 1992-10-15 1993-10-15 Shock absorber fluid
US08/499,104 US5561104A (en) 1992-10-15 1995-07-06 Hydraulic working oil composition for buffers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4301576A JP2962950B2 (en) 1992-10-15 1992-10-15 Hydraulic fluid composition for shock absorber

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Publication Number Publication Date
JPH06128581A JPH06128581A (en) 1994-05-10
JP2962950B2 true JP2962950B2 (en) 1999-10-12

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JP (1) JP2962950B2 (en)
DE (1) DE69318095T2 (en)

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JP4142115B2 (en) * 1994-11-09 2008-08-27 シエル・インターナシヨナル・リサーチ・マートスハツペイ・ベー・ヴエー Lubricating oil composition
JP2000239688A (en) * 1999-02-17 2000-09-05 Sanyo Chem Ind Ltd Abrasion resistance improver
JP4695257B2 (en) * 2000-12-26 2011-06-08 Ｊｘ日鉱日石エネルギー株式会社 Hydraulic fluid composition for shock absorber
JP4551103B2 (en) * 2004-03-09 2010-09-22 Ｊｘ日鉱日石エネルギー株式会社 Hydraulic fluid composition for shock absorber
US7759293B2 (en) 2004-11-22 2010-07-20 Nippon Oil Corporation Hydraulic oil composition for shock absorbers
JP5041678B2 (en) * 2005-06-03 2012-10-03 Ｊｘ日鉱日石エネルギー株式会社 Lubricating method for fluorine-based composite material containing solid lubricant and lubricating oil composition for the material
JP6422260B2 (en) * 2014-08-06 2018-11-14 出光興産株式会社 Lubricating oil composition
CN107384542B (en) * 2017-06-29 2020-01-24 中国石油化工股份有限公司 High-wear-resistance shock absorber oil composition
CN113174283A (en) * 2021-04-02 2021-07-27 安徽中天石化股份有限公司 High-performance phosphate flame-retardant hydraulic oil

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US3799878A (en) * 1970-07-21 1974-03-26 Maruzen Oil Co Ltd Method of hydraulic transmission of power and hydraulic fluid compositions therefor
JPS5845293A (en) * 1981-09-10 1983-03-16 Idemitsu Kosan Co Ltd Fluid composition for shock absorber
JPH0251591A (en) * 1988-06-24 1990-02-21 Exxon Chem Patents Inc Synergic combination of additives useful in power transmitting composition
US5078893A (en) * 1988-06-24 1992-01-07 Exxon Chemical Patents Inc. Synergistic combination of additives useful in power transmitting compositions
EP0453114B1 (en) * 1990-03-31 1995-05-24 Tonen Corporation Hydraulic fluids for automobile suspensions
JPH05255683A (en) * 1992-03-11 1993-10-05 Tonen Corp Hydraulic oil composition for bumper

Also Published As

Publication number Publication date
DE69318095T2 (en) 1999-01-07
JPH06128581A (en) 1994-05-10
EP0593068A1 (en) 1994-04-20
DE69318095D1 (en) 1998-05-28
EP0593068B1 (en) 1998-04-22

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