JPH06336593A - 潤滑油組成物 - Google Patents

潤滑油組成物

Info

Publication number
JPH06336593A
JPH06336593A JP5148669A JP14866993A JPH06336593A JP H06336593 A JPH06336593 A JP H06336593A JP 5148669 A JP5148669 A JP 5148669A JP 14866993 A JP14866993 A JP 14866993A JP H06336593 A JPH06336593 A JP H06336593A
Authority
JP
Japan
Prior art keywords
weight
carbon atoms
composition
hydrocarbon group
oil
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.)
Pending
Application number
JP5148669A
Other languages
English (en)
Inventor
Katsuya Arai
克矢 新井
Satoshi Asano
聡 浅野
Sadao Wada
貞夫 和田
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.)
Tonen General Sekiyu KK
Original Assignee
Tonen 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
Application filed by Tonen Corp filed Critical Tonen Corp
Priority to JP5148669A priority Critical patent/JPH06336593A/ja
Priority to PCT/US1994/006001 priority patent/WO1994028094A1/en
Priority to EP94918148A priority patent/EP0707623B1/en
Priority to DE69411922T priority patent/DE69411922T2/de
Priority to CA002163207A priority patent/CA2163207C/en
Priority to US08/553,288 priority patent/US5665684A/en
Priority to AU69594/94A priority patent/AU696014B2/en
Publication of JPH06336593A publication Critical patent/JPH06336593A/ja
Priority to NO19954708A priority patent/NO312680B1/no
Pending legal-status Critical Current

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    • 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
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Abstract

(57)【要約】 【構成】組成物全重量に基づき、（Ａ）りん酸エステル
及び／又は亜りん酸エステルを０.０１〜０.８重量％、
（Ｂ）Ｃ8〜18の炭化水素基を有するＭｏＤＴＣを、モ
リブデン量として５０〜２０００ppm、及び（Ｃ）全塩
基価１０〜１００のカルシウムサリシレートを０.３〜
２.５重量％含有する潤滑油組成物。 【効果】優れた低摩擦性を有し、内燃機関、自動変速
機、緩衝器、パワーステアリングなどの潤滑油、特に内
燃機関用潤滑油として好適に用いられる。

Description

【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は新規な潤滑油組成物、さ
らに詳しくいえば、優れた低摩擦性を有し、内燃機関、
自動変速機、緩衝器、パワーステアリングなどの潤滑
油、特に内燃機関用潤滑油として好適に用いられる潤滑
油組成物に関するものである。
【０００２】
【従来の技術】従来、内燃機関や、自動変速機、緩衝
器、パワーステアリングなどの駆動系機器、ギヤなどに
は、その作動を円滑にするために潤滑油が用いられてい
る。特に内燃機関用潤滑油（エンジン油）は、主として
ピストンリングとシリンダライナ、クランク軸や連接棒
（コネクティングロッド）の軸受、カムとバルブリフタ
を含む動弁機構など、各種摺動部分の潤滑のほか、エン
ジン内の冷却や燃焼生成物の清浄分散、さらには錆や腐
食を防止するなどの作用を果たす。このように、内燃機
関用潤滑油には多様な性能が要求され、しかも近年、内
燃機関の高性能化、高出力化、運転条件の過酷化などに
伴い、高度な性能が要求されてきている。したがって、
該内燃機関用潤滑油には、このような要求性能を満たす
ために、例えば摩耗防止剤、金属清浄剤、無灰分散剤、
酸化防止剤などの種々の添加剤が配合されている。とこ
ろで、内燃機関では、潤滑油が関与する摩擦部分でのエ
ネルギー損失が大きいために、摩擦損失低減や燃費低減
対策として、摩擦調整剤（ＦＭ：フリクションモディフ
ァイヤ）を初め、各種の添加剤を組み合わせた潤滑油が
使用されている（例えば特公平３−２３５９５号公
報）。自動車の内燃機関用潤滑油は、各種の油温度、回
転数、負荷で運転されており、したがって、さらに燃費
を向上させるためには、広範囲の使用条件下での摩擦特
性に優れる必要がある。
【０００３】
【発明が解決しようとする課題】本発明は、従来のＭｏ
ＤＴＣとりん酸エステルとの併用系に比べて優れた低摩
擦性を有し、内燃機関、自動変速機、緩衝器、パワース
テアリングなどの潤滑油、特に内燃機関用潤滑油として
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
してなされたものである。
【０００４】
【課題を解決するための手段】本発明者らは、優れた低
摩擦性を有する潤滑油組成物を開発すべく鋭意研究を重
ねた結果、特定のりん酸エステル及び／又は亜りん酸エ
ステルとＭｏＤＴＣとカルシウムサリシレートとを、所
定の割合で含有する潤滑油組成物により、その目的を達
成しうることを見い出し、この知見に基づいて本発明を
完成するに至った。すなわち、本発明は、潤滑油基油に
対し、組成物全重量に基づき、（Ａ）（イ）一般式
【０００５】
【化３】
【０００６】（式中のＲ1、Ｒ2及びＲ3はそれぞれ水素
原子又は炭素数３〜２３の炭化水素基であり、それらは
たがいに同一であっても異なっていてもよいが、その中
の少なくとも１つは炭素数３〜２３の炭化水素基であ
る）で表されるりん酸エステル、及び（ロ）一般式
【０００７】
【化４】
【０００８】（式中のＲ4、Ｒ5及びＲ6はそれぞれ水素
原子又は炭素数３〜２３の炭化水素基であり、それらは
たがいに同一であっても異なっていてもよいが、その中
の少なくとも１つは炭素数３〜２３の炭化水素基であ
る）で表される亜りん酸エステルの中から選ばれた少な
くとも１種を０.０１〜０.８重量％、（Ｂ）炭素数８〜
１８の炭化水素基を有する硫化オキシモリブデンジチオ
カルバメートを、モリブデン量として５０〜２０００pp
m、及び（Ｃ）全塩基価１０〜１００のカルシウムサリ
シレートを０.３〜２.５重量％含有させたことを特徴と
する潤滑油組成物を提供するものである。以下、本発明
を詳細に説明する。本発明の潤滑油組成物において用い
られる基油については特に制限はなく、従来潤滑油の基
油として慣用されているもの、例えば鉱油や合成油が使
用される。
【０００９】鉱油としては、例えば溶剤精製又は水添精
製による６０ニュートラル油、１００ニュートラル油、
１５０ニュートラル油、３００ニュートラル油、５００
ニュートラル油及びこれらの基油からワックス分を除く
ことにより低温流動性を改善した低流動点基油などが挙
げられ、これらは１種用いてもよいし、２種以上を適当
な割合で混合して用いてもよい。一方、合成油として
は、例えばポリα−オレフィンオリゴマー、ジエステ
ル、ポリオールエステル、ポリグリコールエステルなど
が挙げられ、これらの基油は単独または混合して用いる
ことができる。また前記鉱油と混合して用いることもで
きる。合成油と鉱油との混合割合は、例えば重量比８
０：２０ないし２０：８０である。本発明組成物におい
て用いられる基油としては、１００℃における粘度が３
〜２０ｃＳｔの範囲にあるものが好適であり、なかでも
芳香族成分３重量％以下、硫黄分５０ppm以下及び窒素
分５０ppm以下の水素化分解油及び／又はワックス異性
化油が特に好適である。本発明組成物においては、
（Ａ）成分として（イ）一般式
【００１０】
【化５】
【００１１】（式中のＲ1、Ｒ2及びＲ3はそれぞれ前記
と同じ意味をもつ）で表されるりん酸エステル、及び
（ロ）一般式
【００１２】
【化６】
【００１３】（式中のＲ4、Ｒ5及びＲ6はそれぞれ前記
と同じ意味をもつ）で表される亜りん酸エステルの中か
ら選ばれた少なくとも１種が用いられる。前記一般式
［１］で表されるりん酸エステルにおいて、Ｒ1、Ｒ2及
びＲ3は、それぞれ水素原子又は炭素数３〜２３の炭化
水素基であり、それらはたがいに同一であっても異なっ
ていてもよいが、その中の少なくとも１つは炭素数３〜
２３の炭化水素基である。炭素数３〜２３の炭化水素基
としては、炭素数３〜２３の直鎖状、分枝鎖状若しくは
環状のアルキル基又はアルケニル基、炭素数６〜２３の
アリール基、炭素数７〜２３のアルキルアリール基、炭
素数７〜２３のアリールアルキル基などを挙げることが
できる。このようなもの具体例としては、プロピル基、
ブチル基、ペンチル基、ヘキシル基、シクロヘキシル
基、オクチル基、デシル基、ラウリル基、ミリスチル
基、パルミチル基、ステアリル基、オレイル基、エイコ
シル基、フェニル基、キシリル基、ベンジル基、フェネ
チル基などが挙げられる。
【００１４】また、前記一般式［２］で表される亜りん
酸エステルにおいて、Ｒ4、Ｒ5及びＲ6は、それぞれ水
素原子又は炭素数３〜２３の炭化水素基であり、それら
はたがいに同一であっても異なっていてもよいが、その
中の少なくとも１つは炭素数３〜２３の炭化水素基であ
る。この炭素数３〜２３の炭化水素基としては、前記一
般式［１］におけるＲ1、Ｒ2及びＲ3の説明において例
示したものと同じものを挙げることができる。本発明組
成物においては、該（Ａ）成分として、前記りん酸エス
テルを１種用いてもよいし、２種以上を組み合わせて用
いてもよく、また前記亜りん酸エステルを１種用いても
よいし、２種以上を組み合わせて用いてもよい。さらに
は、該りん酸エステル１種以上と亜りん酸エステル１種
以上とを組み合わせて用いてもよい。
【００１５】本発明組成物においては、該（Ａ）成分の
りん酸エステルや亜りん酸エステルは、組成物の全重量
に基づき０.０１〜０.８重量％、好ましくは０.０５〜
０.５重量％の割合で含有させることが必要である。こ
の含有量が０.０１重量％未満では十分な低摩擦性が得
られないし、０.８重量％を超えるとその量の割には摩
擦特性の向上効果がみられない。本発明組成物において
は、（Ｂ）成分として、炭素数８〜１８の炭化水素基を
有す硫化オキシモリブデンジチオカルバメート（ＭｏＤ
ＴＣ）が用いられる。該ＭｏＤＴＣは、一般式
【００１６】
【化７】
【００１７】で表される構造のものである。前記一般式
［３］におけるＲ7及びＲ8はそれぞれ炭素数８〜１８の
炭化水素基である。該炭素数８〜１８の炭化水素基とし
ては、炭素数８〜１８の直鎖状若しくは分枝鎖状のアル
キル基又はアルケニル基、炭素数８〜１８のシクロアル
キル基、アリール基、アルキルアリール基又はアリール
アルキル基などが挙げられる。このようなものの具体例
としては２−エチルヘキシル基、ｎ−オクチル基、ノニ
ル基、デシル基、ラウリル基、トリデシル基、パルミチ
ル基、ステアリル基、オレイル基、エイコシル基、ブチ
ルフェニル基、ノニルフェニル基などが挙げられる。該
Ｒ7及びＲ8はたがいに同一であっても異なっていてもよ
い。また、ｍ及びｎはそれぞれそれらの和が４となるよ
うな正の整数である。本発明組成物においては、該
（Ｂ）成分のＭｏＤＴＣは１種用いてもよいし、２種以
上を組み合わせて用いてもよく、またその含有量は、組
成物の全重量に基づき、モリブデン量として５０〜２０
００ppm、好ましくは１００〜１０００ppmになるように
選ばれる。モリブデン量が５０ppm未満では十分な低摩
擦性が得られないし、２０００ppmを超えるとその量の
割には摩擦特性の向上効果がみられない。本発明組成物
においては、（Ｃ）成分として、全塩基価１０〜１００
のカルシウムサリシレートが用いられる。該カルシウム
サリシレートとしては、例えば一般式
【００１８】
【化８】
【００１９】で表されるものが用いられる。前記一般式
［４］におけるＲ9は炭素数８〜２３の直鎖状、分枝鎖
状又は環状のアルキル基であり、具体的にはオクチル
基、ノニル基、デシル基、ドデシル基、ペンタデシル
基、オクタデシル基、エイコシル基などが挙げられる。
該（Ｃ）成分のカルシウムサリシレートは１種用いても
よいし、２種以上を組み合わせて用いてもよく、また、
その含有量は組成物の全重量に基づき０.３〜２.５重量
％の範囲で選ばれる。この含有量が０.３重量％未満で
は十分な低摩擦性が得られないし、２.５重量％を超え
ると耐摩耗性が低下する上、灰分が増加し、好ましくな
い。本発明の潤滑油組成物には、本発明の目的が損なわ
れない範囲で、従来潤滑油に慣用されている各種添加
剤、例えば無灰清浄分散剤、粘度指数向上剤、流動点降
下剤、酸化防止剤、防錆剤、腐食防止剤、消泡剤、他の
耐摩耗剤や摩擦調整剤などを適宜添加することができ
る。
【００２０】無灰清浄分散剤としては、例えばこはく酸
イミド系、こはく酸アミド系、ベンジルアミン系やその
ホウ素誘導体、エステル系のものなどが挙げられ、これ
らは、通常０.５〜７重量％の割合で使用される。粘度
指数向上剤としては、例えばポリメタクリレート系、ポ
リイソブチレン系、エチレン−プロピレン共重合体系、
スチレン−ブタジエン水添共重合体系などが挙げられ、
これらは、通常０.５〜３５重量％の割合で使用され
る。酸化防止剤としては、例えばアルキル化ジフェニル
アミン、フェニル−α−ナフチルアミン、アルキル化−
α−ナフチルアミンなどのアミン系酸化防止剤、２,６
−ジ−ｔ−ブチル−４−メチルフェノール、４,４'−メ
チレンビス（２,６−ジ−ｔ−ブチルフェノール）など
のフェノール系酸化防止剤などが挙げられ、これは、通
常０.０５〜２重量％の割合で使用される。防錆剤とし
ては、例えばアルケニルこはく酸やその部分エステルな
どが、腐食防止剤としては、例えばベンゾトリアゾール
やベンゾイミダゾールなどが、消泡剤としては、例えば
ジメチルポリシロキサンやポリアクリレートなどが挙げ
られ、これらは適宜添加することができる。
【００２１】
【実施例】次に実施例により本発明をさらに詳細に説明
するが、本発明はこれらの例によってなんら限定される
ものではない。なお、潤滑油組成物の摩擦係数は次のよ
うにして求めた。 （１）摩擦係数（μ） ＬＦＷ−１試験により、２７０rpm、３０kgf、１２０
℃、１０分の条件で求めた。 実施例１〜８、比較例１〜５ 基油として１５０Ｎ−１（１００℃粘度５.７mm2／s、
芳香族成分４.１wt％、硫黄分１１.０ppm、窒素分８９.
０ppm）及び１５０Ｎ−２（１００℃粘度５.５mm2／s、
芳香族成分０.５wt％、硫黄分０.５ppm、窒素分０.１pp
m）を用いた。前記基油を用い、第１表に示す組成の潤
滑油組成物を調製し、摩擦係数（μ）を求めた。その結
果を第１表に示す。
【００２２】
【表１】
【００２３】
【表２】
【００２４】
【発明の効果】本発明の潤滑油組成物は、従来のＭｏＤ
ＴＣとりん酸エステルとの併用系に比べて、さらに優れ
た低摩擦性を有し、例えば内燃機関、自動変速機、緩衝
器、パワーステアリングなどの潤滑油、特に内燃機関用
潤滑油として好適に用いられる。
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ１０Ｍ 137:04） Ｃ１０Ｎ 10:04 10:12 30:06 40:25

Claims (2)

    【特許請求の範囲】
  1. 【請求項１】潤滑油基油に対し、組成物全重量に基づ
    き、（Ａ）（イ）一般式 【化１】 （式中のＲ1、Ｒ2及びＲ3はそれぞれ水素原子又は炭素
    数３〜２３の炭化水素基であり、それらはたがいに同一
    であっても異なっていてもよいが、その中の少なくとも
    １つは炭素数３〜２３の炭化水素基である）で表される
    りん酸エステル、及び（ロ）一般式 【化２】 （式中のＲ4、Ｒ5及びＲ6はそれぞれ水素原子又は炭素
    数３〜２３の炭化水素基であり、それらはたがいに同一
    であっても異なっていてもよいが、その中の少なくとも
    １つは炭素数３〜２３の炭化水素基である）で表される
    亜りん酸エステルの中から選ばれた少なくとも１種を
    ０.０１〜０.８重量％、（Ｂ）炭素数８〜１８の炭化水
    素基を有する硫化オキシモリブデンジチオカルバメート
    を、モリブデン量として５０〜２０００ppm、及び
    （Ｃ）全塩基価１０〜１００のカルシウムサリシレート
    を０.３〜２.５重量％含有させたことを特徴とする潤滑
    油組成物。
  2. 【請求項２】潤滑油基油が、芳香族成分３.０重量％以
    下、硫黄分５０ppm以下及び窒素分５０ppm以下の水素化
    分解油及び／又はワックス異性化油である請求項１記載
    の潤滑油組成物。
JP5148669A 1993-05-27 1993-05-27 潤滑油組成物 Pending JPH06336593A (ja)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP5148669A JPH06336593A (ja) 1993-05-27 1993-05-27 潤滑油組成物
PCT/US1994/006001 WO1994028094A1 (en) 1993-05-27 1994-05-27 Lubricating oil composition
EP94918148A EP0707623B1 (en) 1993-05-27 1994-05-27 Lubricating oil composition
DE69411922T DE69411922T2 (de) 1993-05-27 1994-05-27 Schmierölzusammensetzung
CA002163207A CA2163207C (en) 1993-05-27 1994-05-27 Lubricating oil composition
US08/553,288 US5665684A (en) 1993-05-27 1994-05-27 Lubricating oil composition
AU69594/94A AU696014B2 (en) 1993-05-27 1994-05-27 Lubricating oil composition
NO19954708A NO312680B1 (no) 1993-05-27 1995-11-21 Smöreoljeblanding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5148669A JPH06336593A (ja) 1993-05-27 1993-05-27 潤滑油組成物

Publications (1)

Publication Number Publication Date
JPH06336593A true JPH06336593A (ja) 1994-12-06

Family

ID=15457975

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Country Link
EP (1) EP0707623B1 (ja)
JP (1) JPH06336593A (ja)
AU (1) AU696014B2 (ja)
CA (1) CA2163207C (ja)
DE (1) DE69411922T2 (ja)
NO (1) NO312680B1 (ja)
WO (1) WO1994028094A1 (ja)

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* Cited by examiner, † Cited by third party
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WO1997012950A1 (en) * 1995-10-05 1997-04-10 Idemitsu Kosan Co., Ltd. Lubricating oil composition for stepless transmissions and method for lubricating stepless transmissions therewith
JP2010189657A (ja) * 2010-04-26 2010-09-02 Tonengeneral Sekiyu Kk 内燃機関用潤滑油組成物
JP2010215912A (ja) * 2010-04-26 2010-09-30 Tonengeneral Sekiyu Kk 内燃機関用潤滑油組成物
WO2013145759A1 (ja) 2012-03-30 2013-10-03 Ｊｘ日鉱日石エネルギー株式会社 潤滑油組成物

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JPH07197064A (ja) * 1993-12-30 1995-08-01 Cosmo Oil Co Ltd パワーステアリングフルード組成物
JP3454593B2 (ja) * 1994-12-27 2003-10-06 旭電化工業株式会社 潤滑油組成物
US5807813A (en) * 1995-07-20 1998-09-15 Idemitsu Kosan Co., Ltd. Lubricating oil composition
EP0811674B1 (en) * 1995-12-22 2002-05-22 Japan Energy Corporation Lubricating oil for internal combustion engines
JP4373650B2 (ja) * 2002-08-05 2009-11-25 新日本石油株式会社 潤滑油組成物
EP1526169B1 (en) * 2002-08-05 2013-04-10 Nippon Oil Corporation Lubricating oil composition
US7563752B2 (en) 2002-08-05 2009-07-21 Nippon Oil Corporation Lubricating oil compositions
US7625847B2 (en) 2002-08-05 2009-12-01 Nippon Oil Corporation Lubricating oil compositions
US20070117726A1 (en) * 2005-11-18 2007-05-24 Cartwright Stanley J Enhanced deposit control for lubricating oils used under sustained high load conditions
JP5097737B2 (ja) 2009-03-27 2012-12-12 株式会社日立ハイテクノロジーズ 自動分析装置及びサンプル分注ノズル

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Publication number Priority date Publication date Assignee Title
US4171558A (en) * 1976-09-20 1979-10-23 Idemitsu Kosan Co., Ltd. Cutting oil composition for processing cemented carbide skiving hob
JPS5975995A (ja) * 1982-10-25 1984-04-28 Showa Shell Sekiyu Kk 耐摩耗性、極圧性及び摩擦特性にすぐれた潤滑組成物
JPH0662983B2 (ja) * 1986-03-17 1994-08-17 株式会社豊田中央研究所 潤滑油組成物
US4849123A (en) * 1986-05-29 1989-07-18 The Lubrizol Corporation Drive train fluids comprising oil-soluble transition metal compounds
US4832867A (en) * 1987-10-22 1989-05-23 Idemitsu Kosan Co., Ltd. Lubricating oil composition
JP2602102B2 (ja) * 1989-09-20 1997-04-23 日本石油株式会社 内燃機関用潤滑油組成物
US5281347A (en) * 1989-09-20 1994-01-25 Nippon Oil Co., Ltd. Lubricating composition for internal combustion engine
JP3242403B2 (ja) * 1991-05-01 2001-12-25 ザ ルブリゾル コーポレイション 熱安定性組成物および潤滑剤、およびそれらを含有する機能流体

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997012950A1 (en) * 1995-10-05 1997-04-10 Idemitsu Kosan Co., Ltd. Lubricating oil composition for stepless transmissions and method for lubricating stepless transmissions therewith
JPH09100487A (ja) * 1995-10-05 1997-04-15 Idemitsu Kosan Co Ltd 無段変速機用潤滑油組成物
JP2010189657A (ja) * 2010-04-26 2010-09-02 Tonengeneral Sekiyu Kk 内燃機関用潤滑油組成物
JP2010215912A (ja) * 2010-04-26 2010-09-30 Tonengeneral Sekiyu Kk 内燃機関用潤滑油組成物
WO2013145759A1 (ja) 2012-03-30 2013-10-03 Ｊｘ日鉱日石エネルギー株式会社 潤滑油組成物

Also Published As

Publication number Publication date
WO1994028094A1 (en) 1994-12-08
DE69411922T2 (de) 1998-12-17
NO954708D0 (no) 1995-11-21
CA2163207A1 (en) 1994-12-08
EP0707623A1 (en) 1996-04-24
NO312680B1 (no) 2002-06-17
EP0707623A4 (en) 1996-09-18
CA2163207C (en) 2002-11-26
NO954708L (no) 1995-11-21
EP0707623B1 (en) 1998-07-22
AU6959494A (en) 1994-12-20
AU696014B2 (en) 1998-08-27
DE69411922D1 (de) 1998-08-27

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