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JP2599383B2 - Lubricating oil composition - Google Patents

Lubricating oil composition

Info

Publication number
JP2599383B2
JP2599383B2 JP62087933A JP8793387A JP2599383B2 JP 2599383 B2 JP2599383 B2 JP 2599383B2 JP 62087933 A JP62087933 A JP 62087933A JP 8793387 A JP8793387 A JP 8793387A JP 2599383 B2 JP2599383 B2 JP 2599383B2
Authority
JP
Japan
Prior art keywords
oil
acid
lubricating oil
weight
carboxylic acid
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 - Fee Related
Application number
JP62087933A
Other languages
Japanese (ja)
Other versions
JPS63254196A (en
Inventor
正志 太斎
Original Assignee
出光興産 株式会社
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=13928707&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JP2599383(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by 出光興産 株式会社 filed Critical 出光興産 株式会社
Priority to JP62087933A priority Critical patent/JP2599383B2/en
Priority to US07/168,931 priority patent/US5064546A/en
Priority to KR8803771A priority patent/KR930010575B1/en
Priority to DE3873587T priority patent/DE3873587T3/en
Priority to EP88105669A priority patent/EP0286996B2/en
Publication of JPS63254196A publication Critical patent/JPS63254196A/en
Application granted granted Critical
Publication of JP2599383B2 publication Critical patent/JP2599383B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives
    • C10M169/045—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution and non-macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/02—Well-defined hydrocarbons
    • C10M105/04—Well-defined hydrocarbons aliphatic
    • 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
    • C10M101/00—Lubricating compositions characterised by the base-material being a mineral or fatty oil
    • C10M101/02—Petroleum fractions
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/02—Well-defined hydrocarbons
    • C10M105/06—Well-defined hydrocarbons aromatic
    • C—CHEMISTRY; METALLURGY
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
    • C10M107/02—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
    • C—CHEMISTRY; METALLURGY
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
    • C10M107/02—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
    • C10M107/08—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation containing butene
    • C—CHEMISTRY; METALLURGY
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    • C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/04—Hydroxy compounds
    • C10M129/06—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
    • C—CHEMISTRY; METALLURGY
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    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/26—Carboxylic acids; Salts thereof
    • C10M129/28—Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M129/38—Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having 8 or more carbon atoms
    • C10M129/40—Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having 8 or more carbon atoms monocarboxylic
    • C—CHEMISTRY; METALLURGY
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    • C10M129/26—Carboxylic acids; Salts thereof
    • C10M129/28—Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M129/38—Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having 8 or more carbon atoms
    • C10M129/42—Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having 8 or more carbon atoms polycarboxylic
    • C—CHEMISTRY; METALLURGY
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    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/26—Carboxylic acids; Salts thereof
    • C10M129/48—Carboxylic acids; Salts thereof having carboxyl groups bound to a carbon atom of a six-membered aromatic ring
    • C10M129/54—Carboxylic acids; Salts thereof having carboxyl groups bound to a carbon atom of a six-membered aromatic ring containing hydroxy groups
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    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/68—Esters
    • C10M129/76—Esters containing free hydroxy or carboxyl groups
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    • 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
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    • C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
    • C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
    • C—CHEMISTRY; METALLURGY
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    • C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
    • C10M137/04—Phosphate esters
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    • C10M137/08—Ammonium or amine salts
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    • C10M159/00—Lubricating compositions characterised by the additive being of unknown or incompletely defined constitution
    • C10M159/02—Natural products
    • C10M159/08—Fatty oils
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    • C10M159/24—Reaction mixtures having an excess of neutralising base, e.g. so-called overbasic or highly basic products containing sulfonic radicals
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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
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  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Lubricants (AREA)

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は潤滑油組成物に関し、詳しくは摩擦特性にす
ぐれると共にその経時変化が少なく、しかも酸化安定性
にすぐれ、自動または無段変速機用潤滑油として有効に
利用できる潤滑油組成物に関する。Description: FIELD OF THE INVENTION The present invention relates to a lubricating oil composition, and more particularly to an automatic or continuously variable transmission having excellent friction characteristics, little change over time, and excellent oxidation stability. The present invention relates to a lubricating oil composition that can be effectively used as a lubricating oil for use.

〔従来の技術および発明が解決しようとする問題点〕 自動変速機や無段変速機に用いられる潤滑油は、良好
な摩擦特性，酸化安定性，耐腐食性，防錆性を有し、し
かも伝達トルクが大きいなどの性能が要求されている。
特に、静止摩擦係数と動摩擦係数の比で表わされる摩擦
特性は、小さいことと共にその経時変化が小さいことが
要求されている。[Problems to be Solved by Conventional Techniques and Inventions] Lubricating oils used in automatic transmissions and continuously variable transmissions have good friction characteristics, oxidation stability, corrosion resistance, and rust prevention. Performance such as a large transmission torque is required.
In particular, it is required that the friction characteristics represented by the ratio between the static friction coefficient and the dynamic friction coefficient be small and that their change over time be small.

従来，このような潤滑油として静止摩擦係数が高く、
伝達トルクの良好なものが知られている。しかしなが
ら、この潤滑油は摩擦特性が充分でなく、変速ショック
が大きいという欠点がある。Conventionally, such a lubricating oil has a high static friction coefficient,
Known are those having good transmission torque. However, this lubricating oil has the drawback that the friction characteristics are not sufficient and the shift shock is large.

特に近年、自動者の小型化とFF車（前輪駆動車）の急
増により、自動変速機などが小型化される傾向はますま
す著しくなっている。このような自動変速機の小型化傾
向は、変速ショックが人体により敏感に感じられるとい
う悪影響を助長する。したがって、変速ショックを少な
くして乗り心地を良くするために摩擦特性、とりわけ初
期の摩擦特性の一層の向上を図ることが技術課題となっ
ている。In particular, in recent years, the tendency for automatic transmissions and the like to be reduced in size has become more and more remarkable due to the reduction in the size of automatic workers and the rapid increase in front-wheel drive vehicles. Such a tendency to reduce the size of the automatic transmission promotes the adverse effect that the shift shock is more sensitive to the human body. Therefore, it is a technical problem to further improve the friction characteristics, especially the initial friction characteristics, in order to improve the riding comfort by reducing the shift shock.

そこで摩擦特性向上のために摩擦調整剤を用いた潤滑
油が提案されている。しかしながら、摩擦調整剤を用い
た潤滑油は未だ摩擦特性が不充分なうえに長期使用によ
る油の劣化（経時変化）によって摩擦特性が低下してし
まうという問題があった。また、腐食防止能も低下する
という傾向がある。Therefore, lubricating oils using a friction modifier have been proposed to improve friction characteristics. However, the lubricating oil using the friction modifier has a problem that the friction characteristics are still insufficient, and the friction characteristics are deteriorated due to deterioration (aging) of the oil due to long-term use. In addition, the corrosion prevention ability tends to decrease.

したがって、これまでに良好な摩擦特性を有し、しか
も経時による変化が小さく、かつ伝達トルクの大きい潤
滑油は得られていない。Accordingly, a lubricating oil having good friction characteristics, a small change with time, and a large transmission torque has not been obtained.

本発明は特定の性状の基油に摩擦調整剤を一定割合で
含有させることにより、上記従来の問題点を解消し、変
速ショックが少なく、しかも伝達トルクが大きく、その
うえ充分な腐食防止能を有し、自動または無段変速機の
潤滑油として好適に用いられる潤滑油組成物を提供する
ことを目的とするものである。The present invention solves the above-mentioned conventional problems by adding a certain ratio of a friction modifier to a base oil of a specific property, reduces shift shock, increases transmission torque, and has sufficient corrosion prevention ability. It is another object of the present invention to provide a lubricating oil composition suitably used as a lubricating oil for automatic or continuously variable transmissions.

〔問題点を解決するための手段〕[Means for solving the problem]

すなわち、本発明では、（Ａ）ナフテン分含量が30％
以上，芳香族分含量が１％以下であり、かつ100℃にお
ける粘度が1.5〜30cStである基油に（Ｂ）カルボン酸の
金属塩及び二価カルボン酸エステルから選ばれた少なく
とも一種の化合物である摩擦調整剤を全体の0.01〜５重
量％の割合で含有させることを特徴とする自動または無
段変速機用潤滑油組成物を提供するものである。That is, in the present invention, (A) the naphthene content is 30%
As described above, a base oil having an aromatic content of 1% or less and a viscosity at 100 ° C. of 1.5 to 30 cSt contains at least one compound selected from (B) a metal salt of a carboxylic acid and a divalent carboxylic acid ester. An object of the present invention is to provide a lubricating oil composition for an automatic or continuously variable transmission, wherein a certain friction modifier is contained at a ratio of 0.01 to 5% by weight of the whole.

本発明の組成物の（Ａ）成分を構成する基油は、その
性状がナフテン分含量（％CN）30％以上、好ましくは32
〜70％、芳香族分含量（％CA）１％以下でありかつ100
℃における粘度が1.5〜30cSt,好ましくは２〜20cStであ
る潤滑油基油である。ここで、ナフテン分含量が30％未
満のものでは、摩擦特性が低下するという不都合があ
り、また、芳香族分含量が１％を越えるものでは、酸化
安定性が悪くかつ経時変化が大きいという問題があり好
ましくない。さらに、100℃における粘度が1.5cSt未満
のものでは蒸発減量が多いという不都合があり、また30
cStを越えるものでは粘性抵抗による動力損失が大き過
ぎるので好ましくない。The base oil constituting the component (A) of the compositions of the present invention, its nature is naphthene content (% C N) 30% or more, preferably 32
~ 70%, aromatic content (% C A ) 1% or less and 100%
A lubricating base oil having a viscosity at 1.5C of 1.5 to 30 cSt, preferably 2 to 20 cSt. Here, if the naphthene content is less than 30%, there is a disadvantage that the friction characteristics are reduced. If the aromatic content is more than 1%, the oxidation stability is poor and the change with time is large. Is not preferred. Further, when the viscosity at 100 ° C. is less than 1.5 cSt, there is a disadvantage that the evaporation loss is large, and
If it exceeds cSt, power loss due to viscous resistance is too large, which is not preferable.

なお、（Ａ）成分である基油の他の性状は、一般の潤
滑油に要求される性能、例えば適当な粘度特性，良
好な酸化安定性，良好な清浄分散性，良好な防錆・
防食性，良好な低温流動性等をも有することが好まし
く、具体的には粘度指数80以上、流動点−10℃以下、特
に−20℃以下、とりわけ−30℃以下であり、また全酸価
0.1mg KOH/g以下であることがさらに好ましい条件であ
る。The other properties of the base oil which is the component (A) include the properties required for general lubricating oils, for example, appropriate viscosity characteristics, good oxidation stability, good clean dispersibility, and good rust prevention.
It preferably has anticorrosion properties, good low-temperature fluidity, etc., and specifically has a viscosity index of 80 or more, a pour point of -10 ° C or less, particularly -20 ° C or less, especially -30 ° C or less, and a total acid value of
A more preferred condition is 0.1 mg KOH / g or less.

本発明の組成物の（Ａ）成分である基油は、上述した
性状を有するものであれば、鉱油，合成油を問わず様々
なものが使用可能であり、特に制限はない。As the base oil which is the component (A) of the composition of the present invention, various oils can be used regardless of mineral oil or synthetic oil as long as they have the above-mentioned properties, and there is no particular limitation.

この基油として用いることのできる鉱油の具体例とし
ては、パラフィン基系原油，中間基系原油，ナフテン基
系原油を常圧蒸留するかあるいは常圧蒸留の残渣油を減
圧蒸留して得られる留出油を常法にしたがって精製する
ことによって得られる精製油、あるいは精製後さらに深
脱ロウ処理することによって得られる深脱ロウ油などを
あげることができる。この際の精製法は特に制限はなく
様々な方法が考えられる。通常は（ａ）水素化処理，
（ｂ）脱ロウ処理（溶剤脱ロウまたは水添脱ロウ），
（ｃ）溶剤抽出処理，（ｄ）アルカリ蒸留または硫酸洗
浄処理，（ｅ）白土処理を単独であるいは適宣順序で組
み合わせて行う。また同一処理を複数段に分けて繰り返
し行うことも有効である。例えば、留出油を水素化処
理するか、または水素化処理した後、アルカリ蒸留また
は硫酸洗浄処理を行う方法、留出油を水素化処理した
後、脱ロウ処理する方法、留出油を溶剤抽出処理した
後、水素化処理する方法、留出油に二段あるいは三段
の水素化処理を行う、またはその後にアルカル蒸留また
は硫酸洗浄処理する方法、さらには上述した〜の
如き処理後、再度脱ロウ処理して深脱ロウ油とする方法
などがある。Specific examples of the mineral oil that can be used as the base oil include a distillate obtained by distilling a paraffin-based crude oil, an intermediate-base crude oil, a naphthenic-based crude oil under normal pressure, or a residual oil obtained by atmospheric distillation under reduced pressure. A refined oil obtained by refining a discharged oil according to a conventional method, or a deep-dewaxed oil obtained by further deep-dewaxing treatment after purification can be given. The purification method at this time is not particularly limited, and various methods can be considered. Usually, (a) hydrotreating,
(B) dewaxing treatment (solvent dewaxing or hydrogen dewaxing),
(C) Solvent extraction treatment, (d) alkali distillation or sulfuric acid washing treatment, and (e) clay treatment are performed alone or in combination in an appropriate order. It is also effective to repeat the same process in a plurality of stages. For example, hydrogenated distillate or hydrogenated, followed by alkali distillation or sulfuric acid washing, hydrogenated distillate, dewaxing, distillate oil solvent After the extraction treatment, a method of hydrotreating, a method of performing two-stage or three-stage hydrotreatment on the distillate, or a method of subsequently performing an alcal distillation or a sulfuric acid washing treatment, and further, after the treatment as described above, There is a method of dewaxing to give deeply dewaxed oil.

いずれの方法によっても、得られる基油の性状が、前
述した％CN,％CAおよび粘度となるように調整すればよ
い。In any method, the properties of the obtained base oil may be adjusted so as to have the above-described% C N ,% C A and viscosity.

特に、本発明では深脱ロウ処理によって得られる鉱油
が（Ａ）成分の基油として好適である。この深脱ロウ処
理は、苛酷な条件下での溶剤脱ロウ処理法やゼオライト
触媒を用いた接触水添脱ロウ処理法などによって行われ
る。Particularly, in the present invention, mineral oil obtained by deep dewaxing treatment is suitable as the base oil of the component (A). This deep dewaxing treatment is performed by a solvent dewaxing method under severe conditions, a contact hydrodewaxing method using a zeolite catalyst, or the like.

また、本発明の基油としては、上述の鉱油以外に、ア
ルキルベンゼン，ポリブテンあるいはポリ（α−オレフ
ィン）の如き一般の合成油、さらには１−（１−デカリ
ル）−１−シクロヘキシルエタンなどの縮合環または非
縮合環の飽和炭化水素を有する合成油であってもよく、
またこれらの混合物であってもよい。Examples of the base oil of the present invention include, in addition to the above-described mineral oils, general synthetic oils such as alkylbenzene, polybutene and poly (α-olefin), and condensation products of 1- (1-decalyl) -1-cyclohexylethane and the like. It may be a synthetic oil having a cyclic or non-fused ring saturated hydrocarbon,
Further, a mixture thereof may be used.

本発明の組成物では、上述の（Ａ）基油に、（Ｂ）摩
擦調整剤を組成物全体の0.01〜５重量％、好ましくは0.
1〜２重量％の割合で含有させる。（Ｂ）成分である摩
擦調整剤の含有量が0.01重量％未満では効果がなく、５
重量％を越えると酸化安定性が悪くなるので好ましくな
い。ここで（Ｂ）成分である摩擦調整剤としてはカルボ
ン酸の金属塩及び二価カルボン酸エステルから選ばれた
少なくとも一種の化合物をあげることができる。In the composition of the present invention, (B) a friction modifier is added to the above (A) base oil in an amount of 0.01 to 5% by weight, preferably 0.1 to 5% by weight of the whole composition.
It is contained at a ratio of 1 to 2% by weight. When the content of the friction modifier as the component (B) is less than 0.01% by weight, no effect is obtained.
Exceeding the weight% is not preferred because the oxidation stability is deteriorated. Here, examples of the friction modifier as the component (B) include at least one compound selected from metal salts of carboxylic acids and divalent carboxylic acid esters.

カルボン酸の金属塩や二価カルボン酸エステルの原料
としてのカルボン酸には、脂肪族カルボン酸，二価カル
ボン酸（二塩基酸），芳香族カルボン酸があり、ここで
脂肪族カルボン酸については、炭素数８〜30のものがあ
り、飽和，不飽和のいずれであってもよい。脂肪族カル
ボン酸の具体例を示すと、ペラルゴン酸，ウラリル酸，
トリデカン酸，ミリスチン酸，パルミチン酸，ステアリ
ン酸，エイコサン酸，ベヘン酸，トリアコンタン酸，ウ
ンデシレン酸，オレイン酸，リノール酸，リノレン酸，
エルカ酸および油脂脂肪酸（ヤシ油脂肪酸，パーム核油
脂肪酸等）などがある。二価カルボン酸の具体例を示す
と、オクタデシルコハク酸，オクタデセニルコハク酸，
ポリブテニルコハク酸，アジピン酸，アゼライン酸，セ
バシン酸，ドデカン二酸などがある。また、芳香族カル
ボン酸についてはサリチル酸などがある。Examples of the carboxylic acid as a raw material of the metal salt of the carboxylic acid or the dicarboxylic acid ester include an aliphatic carboxylic acid, a divalent carboxylic acid (dibasic acid), and an aromatic carboxylic acid. Having 8 to 30 carbon atoms, and may be either saturated or unsaturated. Specific examples of the aliphatic carboxylic acid include pelargonic acid, uralic acid,
Tridecanoic acid, myristic acid, palmitic acid, stearic acid, eicosanoic acid, behenic acid, triacontanic acid, undecylenic acid, oleic acid, linoleic acid, linolenic acid,
There are erucic acid and oil fatty acids (coconut oil fatty acids, palm kernel oil fatty acids, etc.). Specific examples of divalent carboxylic acids include octadecyl succinic acid, octadecenyl succinic acid,
Polybutenyl succinic acid, adipic acid, azelaic acid, sebacic acid, dodecane diacid and the like. Examples of the aromatic carboxylic acid include salicylic acid.

二価カルボン酸エステルは上記の二価カルボン酸のモ
ノアルキルエステルあるいはプロピレングリコール等の
グリコールエステルがあげられる。カルボン酸の金属塩
としては、ラウリン酸亜鉛，オレイン酸亜鉛，ステアリ
ン酸亜鉛，ヤシ油脂肪酸亜鉛，ステアリン酸アルミニウ
ム，サリチル酸マグネシウムなどがあげられる。Examples of the divalent carboxylic acid ester include the above-mentioned monoalkyl esters of the divalent carboxylic acid and glycol esters such as propylene glycol. Examples of the metal salt of carboxylic acid include zinc laurate, zinc oleate, zinc stearate, zinc coconut oil fatty acid, aluminum stearate, magnesium salicylate and the like.

本発明の組成物は、前述した（Ａ）基油に上記した
（Ｂ）摩擦調整剤を含有せしめることにより得られる
が、さらに所望により粘度指数向上剤，酸化防止剤，清
浄分散剤などを適宣加えることもできる。The composition of the present invention can be obtained by adding the above-mentioned (B) friction modifier to the above-mentioned (A) base oil. Further, if necessary, a viscosity index improver, an antioxidant, a cleaning dispersant and the like may be suitably used. They can also be declared.

上記の粘度指数向上剤の種類は特に制限はないが、例
えばポリメタアクリレート（PMA），ポリイソブテン，
ポリアルキルスチレン，エチレン−プロピレンコポリマ
ーなどがあげられる。このうち特に剪断安定性に優れ、
粘度変化を長期間防止し得る分子量10万以下、好ましく
は５万以下のポリメタアクリレートが好適である。この
粘度指数向上剤の添加割合については、各種状況に応じ
て適宜選定すればよいが、通常は組成物全体の0.5〜15
重量％、好ましくは２〜10重量％である。The type of the viscosity index improver is not particularly limited. For example, polymethacrylate (PMA), polyisobutene,
Examples include polyalkylstyrene and ethylene-propylene copolymer. Among them, especially excellent shear stability,
A polymethacrylate having a molecular weight of 100,000 or less, preferably 50,000 or less, which can prevent a change in viscosity for a long time, is suitable. The addition ratio of the viscosity index improver may be appropriately selected according to various situations, but is usually 0.5 to 15 of the entire composition.
% By weight, preferably 2 to 10% by weight.

また、酸化防止剤としてはフェノール系化合物，アミ
ン系化合物，ジチオリン酸亜鉛など一般的に使用されて
いるものであれば良い。具体的には2,6−ジ−ｔ−ブチ
ル−４−メチルフェノール;2,6−ジ−ｔ−ブチル−４−
エチルフェノール;4,4′−メチレンビス（2,6−ジ−ｔ
−ブチルフェノール）；フェニル−α−ナフチルアミ
ン；ジアルキルジフェニルアミン；ジ−２−エチルヘキ
シルジチオリン酸亜鉛；ジアミルジチオカーバミン酸亜
鉛；五硫化ピネンなどが挙げられる。その添加割合は0.
01〜２重量％、好ましくは0.05〜１重量％である。Further, as the antioxidant, any commonly used one such as a phenolic compound, an amine compound, and zinc dithiophosphate may be used. Specifically, 2,6-di-t-butyl-4-methylphenol; 2,6-di-t-butyl-4-methylphenol
Ethylphenol; 4,4'-methylenebis (2,6-di-t
-Phenylphenol); phenyl-α-naphthylamine; dialkyldiphenylamine; zinc di-2-ethylhexyldithiophosphate; zinc diamyldithiocarbamate; pinene pentasulfide and the like. The addition ratio is 0.
It is from 01 to 2% by weight, preferably from 0.05 to 1% by weight.

次に、清浄分散剤としては無灰系清浄剤，金属系清浄
剤さらにはホウ素を含む無灰清浄分散剤なども使用する
ことができる。具体的にはアルケニルコハク酸イミド，
スルホネート，フィネートなどが好ましく、例えばポリ
ブテニルコハク酸イミド，カルシウムスルホネート，バ
リウムスルホネート，カルシウムフィネート，バリウム
フィネート，カルシウムサリチレートなどが挙げられ
る。添加割合は0.1〜10重量％、好ましくは0.5〜５重量
％である。Next, as the detergent and dispersant, an ashless detergent, a metal detergent and an ashless detergent and dispersant containing boron can be used. Specifically, alkenyl succinimide,
Sulfonates, finates and the like are preferable, and examples thereof include polybutenylsuccinimide, calcium sulfonate, barium sulfonate, calcium finate, barium finate, and calcium salicylate. The addition ratio is 0.1 to 10% by weight, preferably 0.5 to 5% by weight.

その他、本発明の組成物にはさらに必要に応じて腐食
防止剤、ゴム膨潤剤，消泡剤などを適量添加することも
できる。In addition, an appropriate amount of a corrosion inhibitor, a rubber swelling agent, an antifoaming agent or the like can be further added to the composition of the present invention, if necessary.

〔実施例〕〔Example〕

次に、本発明を実施例によりさらに詳しく説明する。 Next, the present invention will be described in more detail with reference to examples.

実施例１〜２および比較例１〜14 （１）潤滑油組成物の調製 基油として下記に示す基油Ａ〜Ｄを用い、この基油Ａ
〜D89.3wt％にポリメチルメタアクリレート（重量平均
分子量42,000）4.0wt％,2,6−ジ−ｔ−ブチル−４−メ
チルフェノール0.5wt％，ポリブテニルコハク酸イミド
5.0wt％，腐食防止剤0.1wt％，ゴム膨潤剤1.0wt％およ
び消泡剤0.1wt％を加えて、それぞれ基本油Ａ〜Ｄを調
製した。Examples 1 and 2 and Comparative Examples 1 to 14 (1) Preparation of lubricating oil composition The following base oils A to D were used as base oils.
~ D89.3wt% to polymethyl methacrylate (weight average molecular weight 42,000) 4.0wt%, 2,6-di-t-butyl-4-methylphenol 0.5wt%, polybutenyl succinimide
Basic oils A to D were prepared by adding 5.0% by weight, 0.1% by weight of a corrosion inhibitor, 1.0% by weight of a rubber swelling agent and 0.1% by weight of an antifoaming agent, respectively.

この基本油Ａ〜Ｄに、下表に示す化合物を所定割合で
加えて潤滑油組成物を得た。Compounds shown in the following table were added to these basic oils A to D at predetermined ratios to obtain lubricating oil compositions.

基 油 Ａ 性 状 粘 度 :5.40cSt（100℃） 粘度指数:105 環分析 ：％CA0.1,％CN38.0 流動点 ：−45℃ 製造法 中間基原油からの留出油を二段水素化処理し、さらに
深脱ロウ処理をして得られたもの。Base oil A Properties Viscosity: 5.40 cSt (100 ° C) Viscosity index: 105 Ring analysis:% C A 0.1,% C N 38.0 Pour point: -45 ° C Production method Distillate from intermediate base crude oil is two-stage hydrogen Obtained by a deepening process and a deep dewaxing process.

基 油 Ｂ 性 状 粘 度 :5.20cSt（100℃） 粘度指数:105 環分析 ：％CA4.5,％CN27.0 製造法 中間基原油からの留出油を溶剤抽出処理し、さらに水
素化処理をして得られたもの。Base oil B Properties Viscosity: 5.20 cSt (100 ° C) Viscosity index: 105 Ring analysis:% C A 4.5,% C N 27.0 Production method Distillate from intermediate base crude oil is subjected to solvent extraction, followed by hydrogenation What was obtained by doing.

基 油 Ｃ 性 状 粘 度 :5.6cSt（100℃） 粘度指数:120 環分析 ：％CA0.1以下，％CN19 製造法 基油Ａ（50重量％）とポリ−α−オレフィン（50重量
％）との混合物。Base oil C Properties Viscosity: 5.6 cSt (100 ° C) Viscosity index: 120 Ring analysis:% C A 0.1 or less,% C N 19 Production method Base oil A (50% by weight) and poly-α-olefin (50% by weight) %).

基 油 Ｄ 性 状 粘 度 :5.1cSt（100℃） 粘度指数:60 環分析 ：％CA4,％CN40 製造法 ナフテン基系原油からの留出油を溶剤抽出処理して得
られたもの。Base Oil D Typical Properties Viscosity: 5.1cSt (100 ℃) Viscosity Index: 60 Ring Analysis:% C A 4, the% C N 40 preparation distillate from naphthenic base crude obtained by the solvent extraction process thing.

（２）性能試験 上記（１）で調製した潤滑油組成物について調製時の
ものと調製劣化後のものを用いて、下記に示す性能試験
を行った。結果を表に示す。なお、強制劣化は、内燃機
関用潤滑油酸化安定度試験法（JIS Ｋ 2514）に準拠
して150℃で24時間劣化させることにより行った。(2) Performance test Using the lubricating oil composition prepared in the above (1) and the lubricating oil composition at the time of preparation and after deterioration of the preparation, the following performance tests were performed. The results are shown in the table. The forced deterioration was carried out by performing deterioration at 150 ° C. for 24 hours in accordance with the lubricating oil oxidation stability test method for internal combustion engines (JIS K 2514).

SAE No.2摩擦試験 グリーニング社（米国）製,SAE No.2試験機を用い下
記の実験条件で摩擦特性を評価した。SAE No.2 Friction Test Using a SAE No.2 tester manufactured by Greening (USA), the friction characteristics were evaluated under the following experimental conditions.

〔実験条件〕[Experiment conditions]

ディスク：国産自動変速機用ペーパー系ディスク（２
枚） プレート：国産自動変速機用鋼製プレート（３枚） モーター回転数:3600rpm ピストン押付圧:38psi 油 温:120℃ 以上の実験条件における回転数1200rpmのときの動摩
擦係数をμ1200、停止するときの静止摩擦係数をμ０と
して測定し、μ0/μ1200を算出した。Disc: Paper disc for domestic automatic transmission (2
Plate: Steel plate for domestic automatic transmission (3) Motor rotation speed: 3600 rpm Piston pressing pressure: 38 psi Oil temperature: 120 ° C Stop the dynamic friction coefficient at 1200 rpm and the dynamic friction coefficient at 1200 rpm in experimental conditions above the static friction coefficient was measured as mu 0 of time, was calculated μ 0 / μ 1200.

酸化安定性試験 内燃機関用潤滑油酸化安定度試験法（JIS K2514）に
準拠して150℃で69時間の条件で試験を行った。Oxidation stability test A test was performed at 150 ° C for 69 hours in accordance with the Lubricating Oil Oxidation Stability Test Method for Internal Combustion Engines (JIS K2514).

腐食試験 JIS Ｋ 2513に準拠して100℃で３時間経過後の銅板
の腐食状態を測定した。Corrosion test The corrosion state of the copper plate after 3 hours at 100 ° C. was measured according to JIS K 2513.

〔発明の効果〕 以上に示したように、本発明の潤滑油組成物は初期摩
擦特性が良好、即ち静止摩擦係数／動摩擦係数の比の値
が小さいものであり、変速によるショックが少ない。し
かも、摩擦特性の経時変化も小さい。そのうえ、酸化安
定性や腐食防止能にもすぐれている。したがって、自動
または無段変速機の小型化に充分適応しうるものであ
る。 [Effects of the Invention] As described above, the lubricating oil composition of the present invention has good initial friction characteristics, that is, a small value of the ratio of static friction coefficient / dynamic friction coefficient, and has little shock due to gear shifting. In addition, the change over time in the friction characteristics is small. In addition, it has excellent oxidation stability and corrosion prevention ability. Therefore, the present invention can be adequately adapted to miniaturization of an automatic or continuously variable transmission.

それ故、本発明の潤滑油組成物は自動変速機あるいは
無段変速機用の潤滑油として極めて有効である。Therefore, the lubricating oil composition of the present invention is extremely effective as a lubricating oil for an automatic transmission or a continuously variable transmission.

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ１０Ｍ 129:40） Ｃ１０Ｎ 20:02 30:06 30:12 40:04 40:06 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code Agency reference number FI Technical display location C10M 129: 40) C10N 20:02 30:06 30:12 40:04 40:06

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】（Ａ）ナフテン分含量が30％以上，芳香族
分含量が１％以下であり、かつ100℃における粘度が1.5
〜30cStである基油に、（Ｂ）カルボン酸の金属塩及び
二価カルボン酸エステルから選ばれた少なくとも一種の
化合物である摩擦調整剤を全体の0.01〜５重量％の割合
で含有させることを特徴とする自動または無段変速機用
潤滑油組成物。(A) A naphthene content is 30% or more, an aromatic content is 1% or less, and a viscosity at 100 ° C. is 1.5%.
(B) 0.01 to 5% by weight of a friction modifier, which is at least one compound selected from a metal salt of a carboxylic acid and a divalent carboxylic acid ester, in a base oil of about 30 cSt. A lubricating oil composition for automatic or continuously variable transmissions.
JP62087933A 1987-04-11 1987-04-11 Lubricating oil composition Expired - Fee Related JP2599383B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP62087933A JP2599383B2 (en) 1987-04-11 1987-04-11 Lubricating oil composition
US07/168,931 US5064546A (en) 1987-04-11 1988-03-16 Lubricating oil composition
KR8803771A KR930010575B1 (en) 1987-04-11 1988-04-04 Lubricating oil composition
DE3873587T DE3873587T3 (en) 1987-04-11 1988-04-09 Lubricant composition.
EP88105669A EP0286996B2 (en) 1987-04-11 1988-04-09 Lubricating oil composition

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JP2599383B2 true JP2599383B2 (en) 1997-04-09

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EP0286996A3 (en) 1989-01-18
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DE3873587T3 (en) 2000-04-27
DE3873587T2 (en) 1993-05-19
EP0286996A2 (en) 1988-10-19
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JPS63254196A (en) 1988-10-20
KR880012740A (en) 1988-11-28

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