JPH02158692A - グリース組成物 - Google Patents

グリース組成物

Info

Publication number
JPH02158692A
JPH02158692A JP1263773A JP26377389A JPH02158692A JP H02158692 A JPH02158692 A JP H02158692A JP 1263773 A JP1263773 A JP 1263773A JP 26377389 A JP26377389 A JP 26377389A JP H02158692 A JPH02158692 A JP H02158692A
Authority
JP
Japan
Prior art keywords
grease
ring system
oil
sodium
greases
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.)
Granted
Application number
JP1263773A
Other languages
English (en)
Other versions
JP2711150B2 (ja
Inventor
Bernard Tury
バーナード・トゥリー
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Publication of JPH02158692A publication Critical patent/JPH02158692A/ja
Application granted granted Critical
Publication of JP2711150B2 publication Critical patent/JP2711150B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • 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
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    • 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
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    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
    • C10M105/32—Esters
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    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/50—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing halogen
    • C10M105/54—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing halogen containing carbon, hydrogen, halogen and oxygen
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    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/76—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing silicon
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    • C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
    • C10M107/50—Lubricating compositions characterised by the base-material being a macromolecular compound containing silicon
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    • C10M113/00—Lubricating compositions characterised by the thickening agent being an inorganic material
    • C10M113/02—Carbon; Graphite
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    • C10M119/24—Lubricating compositions characterised by the thickener being a macromolecular compound containing nitrogen
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    • 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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    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
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    • C10M2201/0416—Carbon; Graphite; Carbon black used as thickening agents
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    • C10M2201/041—Carbon; Graphite; Carbon black
    • C10M2201/042—Carbon; Graphite; Carbon black halogenated, i.e. graphite fluoride
    • C10M2201/0426—Carbon; Graphite; Carbon black halogenated, i.e. graphite fluoride used as thickening agents
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Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】 本発明はグリース組成物、殊に金属と接触して金属の腐
食を低減させるグリース組成物に関する。
多くのグリースは、油にゲル化剤を添加することにより
増粘された油である。はとんどのグリースのために使用
される油は、鉱物油（鉱油）、すなわち炭化水素油であ
るが、合成油のようなその他の油、例えば合成炭化水素
油、ジ（２−エチルへキシルンセバケートのようなジエ
ステル、パーフルオロアルキルエーテル及びシリコーン
油等モグリースの製造に使用できる。多くのグリースは
、ゲル化剤として、セッケン、一般的にはりチウムセッ
ケンを用いて得られる。しかし、非セッケンタイプのゲ
ル化剤は、改善された性質のグリースを生成させること
ができ、例えばそのようなグリースは、より高い連続使
用温度において使用されうる。
非セッケンタイプのゲル化剤としては、粘土、カーボン
ブラック、シリカ及びポリウレア（ポリ尿＊）等があり
、これらのすべては好ましくは、微細に粉砕または分割
された固体の形で使用される。微細粉砕粘土、例えばベ
ントナイトまたはへクトライ）Ｗの粘土は、鉱油のよう
な油からグリ−スを得るための非セッケンゲル化剤とし
て使用できる。粘土粒子は、第四アンモニウム化合物の
ような有機物質で表面被覆してから用いられるのが普通
である。シリコーン油においては、シリカ充填剤を非セ
ッケンゲル化剤として使用することができるが、この目
的のための県警的なシリカは、１ミクロン以下の平均粒
径な有するフユームドシリカである。
使用の際Ｋ、多くのグリースは、金属ベアリング表面と
接触し、金属は、しばしば腐食を受は易い。金属の腐食
を低減するために、腐食保護を与えるための添加剤をグ
リースに添加し５る。しかし、粘土またはシリカのよう
な非セッケンゲル化剤を含むグリースは、「崩解」（油
とゲル化剤との分離）を受けることがある。腐食保護を
与えるのに有用な冷加刑は、非セッケングル化剤を含む
グリースの崩解（油／ゲル化剤分離）を起しうる。
亜硝酸ナトリウムが、非セッケン増粘のグリースにおけ
る腐食防止剤として提案されてきている。
しかし、多くのグリースは酸化防止剤とし℃アミン化合
物を含み、このような場合には、発ガン性のニトロソア
ミン類が形成される危険があり、従って亜硝酸ナトリウ
ムの使用は望ましくない。セバシン酸二ナトリウムは、
グリースの崩解（分離）を促進することなくある程度の
腐食保護を与えるために非セッケン増粘グリース中で使
用される。
しかし、この物質は高価であり、従って非セッケン増粘
グリースの分離（崩解）を生じさせない代りの腐食防止
剤を見出すことは望ましい。
ここに我々は、ある種の芳香族カルボン酸金属塩が、非
セッケン増粘グリース（七ツケン以外のゲル化剤で増粘
されたグリース）の崩解（成分の分離）を生じさせずに
有効な腐食防止をなすことを発見した。
本発明によれば： ［５１Ｊｂ１合環金環環原子にカルボン酸基が結合して
いるカルボン酸の一価金属ＣＭ）の塩と、（６）非セッ
ケン増粘の鉱油もしくは合成油と、かうなるグリース組
成物が提供される。
この明細書におい【は、縮合環系の環原子にカルボン酸
基が結合しているカルボン酸の一価金属（Ｍ）の塩を、
簡単に「塩」と称することがある。
縮合環系は置換されていても、未置換であり【もよい。
適当な置換基としては、ノーログン原子、ヒドロキシル
基、ヒドロカルビル基、ヒドロカルボッ牛シ基、ヒドロ
カルボニル基％またはヒドロカルボニロキシ基等がある
。縮合環系中に存在する置換基は、カルボン酸基（単数
または複数）以外のものである。置換基は、塩の溶解特
性を改変するようなものであってよいが、好ましくは、
グリースのペースとして使用される油中での有意な溶解
度を与えるべきでない。従って、置換基はアルキル、ア
ルケニル、アルコキシまたはアシル基であってよく、好
ましくは４個以下の炭素原子を含むものである。縮合環
系が、ヒドロキシル基である少なくとも１個の置換基を
含むときに、有用な効果が得られている。
縮合環系は、−緒に縮合した少なくとも２個の環を含む
。環の−またはそれ以上は、複素原子、例えば窒素原子
を含んでいてよい。本発明による塩は、殊に縮合環系の
少なくとも１個の環が炭化水素環であるものである。好
適な化合物は、縮合環系が炭化水素環系、例えば縮合芳
香族炭化水素環系であるものである。縮合環系がヒドロ
カルピル置換基を含む場合には、そのヒドロカルビル基
とカルボン酸基とが縮合環系、殊に縮合炭化水素環系の
相隣れる炭素原子に結合しているのが好−ましい。縮合
環系は、例えば２−す７トエ酸、３−ヒドロキシ−２−
ナフトエ酸、２−ヒドロキシ−１−ナフトエ酸及び１−
しドロキシ−２−ナフトエ酸におけるように、典型的に
はナフタレン環系である。
金１１４　ＣＭ）は−価であり、典型的Ｖ〔は、アルカ
リ金属、例えばリチウム、カリウム及び特にナトリウム
である。我々は２−ナフトエ酸ナトリウム及び３−ヒド
ロキシ−２−ナフトエ酸ナトリウムを用いて有用な結果
を得てきている。塩は微細に粉砕（分割）され【いるの
が好ましく、一般的には、１００μｍ以下の網目を有す
るふるいを通過するのに充分な細かさであるのが好まし
い。
本発明の組成物は、グリースをも含む。そのグリースは
鉱油をベースにしたものであってよく、そのようなグリ
ースについての非セッケングル化剤は微粉砕粘土、特に
親有機性粘土であるのが好ましい。あるいは、グリース
は合成油をベースにしたものであってよく、その合成油
は、ポリジオルガノシロキサンのようなシリコーン油、
例えばポリジメチルシロキサンまたはその共重合体、で
あってよい。そのようなグリースのために適当な増粘剤
は、微粉砕したシリカ、殊にフユームドシリカである。
増粘剤が粘土、カーボンブラック、シリカまたはポリウ
レアである非セッケン増粘グリースは、市販されてお９
、成分Ｃａ）である塩はそのようなグリースに配合して
、認めうるようなグリースの崩解（分離ンを生じること
なく有用な腐食保護を与えることができる。
成分（６）及び（６）からなる本発明の組成物は、塩以
外にグリースに対する添加剤としての他の物質をも含み
うる。これらの他の物質としては、従来腐食防止剤とし
て提案されてきているものも包含される。しかしながら
、そのような他の物質自体がグリースの崩、壊（分離）
を引き起すべきでないこと、そして塩と相互作用してグ
リースの崩壊（分離）を引き起すべぎでないことは、了
解されよう。グリースの崩壊（分離）が生じるか否かは
、容易に、例えば視覚観察により、あるいは比較的簡単
な試験により判定できる。
本発明組成物は、典型的には、組成物の全容量に対して
０．１〜３０重量％の塩を含み、好ましくは塩は０．１
〜５％（重／容）の量で存在す。
金属塩以外に、本発明の組成物は、酸化防止剤及び極圧
添加剤のようなグリースに普通に配合されるその他の種
々の成分を含みうる。本発明の組成物は、固形分を、そ
の固体が実質的に溶解されえない液体または可塑性媒体
中に配合するのに有効な任意の方法によって製造できる
。グリース中へ塩（好ましくは微細に粉砕された形）を
満足に導入することは、塩と予め作られたグリースとを
一緒に混合することにより、例えば−緒に数分間、典型
的には１０分間以下攪拌することにより達成できる。あ
るいは、塩を油の中に配合し、次いでこれを増粘して所
望のグリースを作ることもできる。
本発明のグリース組成物は、グリースについての公知の
いずれの用途にも使用することができ、殊に一般的自動
車用及び高性能ベアリング等のベアリングの用途に使用
できる。
本発明のｍ放物は、防錆試験のときに、同Ｍｉの公知防
錆剤セバシン酸二ナトリウムを含むグリース組成物と比
較して、改善された耐食性を示すことが判明した。
本発明によるグリース組成物を潤滑剤として含むベアリ
ングは、本発明の別の一％徴をなすものである。
本発明の多様なＩ￥ｆ徴は、下記の実施例に説明例示さ
れている。実施例において「部」及び「％」は特に指示
しない限り重′ｆｋ基準である。
２−ナフトエ酸及び３−ヒドロキシ−２−ナフトエ酸の
両者のナトリウム塩な、核酸を等量の水酸化ナトリウム
水溶液で中和させて該塩の溶液を得て、これを蒸発乾固
することにより製造した。
得られた塩を、３００メツシユのふるい（網目間隔約５
７μ惰）を介して粉砕した。
実施例１及び２゜ オルガノ粘土グリース試料をベアリングに塗着し、これ
らのベアリングを、蒸留水を用いてのＩＰ潤滑用グリー
ス防鏑試験ＣＩＰ２２０）に付した。このグリースは潤
滑油を９％（重／重）の親有機性粘土で増粘することに
より得られたものであり、腐食防止剤を含んでいなかっ
た。試験は、１％（重／重）の腐食防止剤を添加したグ
リースの試料、及び腐食防止剤を無添加のグリースの試
料を用いて実施した。腐食防止剤は微細固体の形で用い
、グリースに手で攪拌混入して配合した。
７日後の試験終了時に、ベアリングを取り出し、グリー
スを除いて、外側環トラックの錆及び点食について慎重
に検査し、試験標準に従って評価した。得られた結果な
衣１に示す。
表　１ （ａ）　　Ｓ　Ｂ　＝　３−ヒドロキシ−２−す７トエ
酸ナトリウム ５ｓ＝２−す７トエ酸ナトリウム Ｌ）ＳＳ−市販腐食防止剤セバシン酸二ナトリウム なし＝腐食防止剤無飾加 ｉ６１　　腐食計画はＩＰ２２０の規定により評定した
。
この場合に評価は、ゼロ（可視腐食なし）から５（表面
積の１０％以上がｇ食）までの非線型尺度で付与される
。
各グリース試料を視覚検査したところ、グリースの成分
分離（崩壊）の明かな兆は示されながった。ボーリン・
レオメータ−をオツシロモードで用いて得たデータは、
認めうる崩壊が生じなかったことを示した。剪断による
粘弾性の変化は、腐食防止剤を含むもの及び含まないも
ののすべての試験グリースにおいて５Ａ質的に同一であ
った。
比較として、３−ヒドロキシ−２−ナフトエ酸亜鉛を用
いたときにはＥＭＣＯＲ評価はゼロであったがグリース
の崩壊は、視覚検査でも、ボーリン・レオメータ−を用
いての試験でも明白であった。
実施例３゜ シリコーン油を約８％（ｉ／２１（）の微細シリカで増
粘することにより得たグリースを用いて実施例１及び２
の操作を繰返した。得られた結果を表２に示す。
表　　２ 両グリースを視覚検査及びボーリン・レオメータ−で試
験したところ、認め５る崩壊は生じていなかった。
表　　３ 実施例１及び２のようにして作ったオルガノ粘土増粘潤
滑グリースの各試料に、実施例１及び２の操作を用いて
１％（重／重）の腐食防止剤を添加した。
腐食防止剤を含むグリースの試料及び腐食防止剤を含ま
ないグリースの試料を、ＡＳＴＭ試験法Ｄ１４０３の％
スケールの円錐装置及び操作を用い【、潤滑グリース円
錐針入試験に付した。円錐針入試験は、ＡＳＴＭ試験法
Ｄ１４０３に記載の方式でグリース・ワーカ−中で２５
℃とし６０回の往復ストロースに付された後のグリース
試料について実施した。Ａ　Ｓ　ＴＭ＃Ａ、験法Ｌ）１
４０３に記載の標準式を用いて、測定値を換算して、完
全スケールの円錐装置についての円錐のワークド針人度
を得た。結果を表３に示す。
ワークド針人度はｌｕ＋の児単位で示した深さであり、
これはＡＳＴＭ試験法Ｄ１４０３に記載された条件及び
測定値換算標準式を用いた゛とき罠。
標準円錐がワークドグリースに針入する深さである。
代　　理 人

Claims (1)

  1. 【特許請求の範囲】 １、（ａ）縮合環系の環原子にカルボン酸基が結合して
    いるカルボン酸の一価金属（Ｍ）の塩と、（ｂ）非セッ
    ケン増粘の鉱油もしくは合成油と、からなるグリース組
    成物。 ２、成分（ａ）が２−ナフトエ酸ナトリウムまたは３−
    ヒドロキシ−２−ナフトエ酸ナトリウムである請求項１
    記載の組成物。 ３、グリースが粘土、カーボンブラック、シリカまたは
    ポリウレアで増粘された鉱物もしくは合成油グリースで
    ある請求項１または２記載の組成物。 ４、グリースが親有機性粘土で増粘された鉱物油である
    か、またはフユームドシリカで増粘されたシリコーン油
    である請求項４記載の組成物。
JP1263773A 1988-10-26 1989-10-09 グリース組成物 Expired - Lifetime JP2711150B2 (ja)

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GB8825073.3 1988-10-26
GB888825073A GB8825073D0 (en) 1988-10-26 1988-10-26 Grease composition

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JP2711150B2 JP2711150B2 (ja) 1998-02-10

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CA (1) CA2000834C (ja)
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Cited By (2)

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Publication number Priority date Publication date Assignee Title
US7196042B2 (en) 2002-03-07 2007-03-27 Nsk Ltd. Grease composition and rolling apparatus
JP2017019933A (ja) * 2015-07-10 2017-01-26 株式会社ニッペコ グリース組成物

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US5614481A (en) * 1991-12-30 1997-03-25 Lopez Rangel; Victor D. Process for obtaining and manufacturing lubricant greases
US6214778B1 (en) 1995-08-24 2001-04-10 The Lubrizol Corporation Polyurea-thickened grease composition
JP3871390B2 (ja) * 1997-01-27 2007-01-24 株式会社日本礦油 Ａｂｓポンプ用軸受グリース組成物
US5985166A (en) * 1997-10-29 1999-11-16 California Institute Of Technology Chemical etching of fiber probe
CN108048183A (zh) * 2017-12-19 2018-05-18 东莞市肯特润滑技术有限公司 一种合成高温润滑脂

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US2182137A (en) * 1937-02-01 1939-12-05 Shell Dev Soda soap grease
US2197832A (en) * 1938-05-07 1940-04-23 Socony Vacuum Oil Co Inc Mineral oil composition
US2223129A (en) * 1940-05-01 1940-11-26 Lubri Zol Corp Lubricant
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FR1535153A (fr) * 1966-08-24 1968-08-02 Exxon Research Engineering Co Compositions de graisses renfermant des savons complexes d'aluminium
US3711407A (en) * 1970-11-18 1973-01-16 Exxon Research Engineering Co Incorporating lithium salicylate or the like into a grease
US3761434A (en) * 1971-04-30 1973-09-25 Cities Service Oil Co Petroleum hydrocarbon compositions
US4307027A (en) * 1979-04-09 1981-12-22 Dart Industries Inc. Continuous process for preparing dry metallic salts of higher fatty acids
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7196042B2 (en) 2002-03-07 2007-03-27 Nsk Ltd. Grease composition and rolling apparatus
JP2017019933A (ja) * 2015-07-10 2017-01-26 株式会社ニッペコ グリース組成物

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GB8921998D0 (en) 1989-11-15
AU4980190A (en) 1991-08-22
EP0366280A1 (en) 1990-05-02
EP0366280B1 (en) 1992-08-19
US4929369A (en) 1990-05-29
DE68902532T2 (de) 1993-01-21
DE68902532D1 (de) 1992-09-24
ES2034645T3 (es) 1993-04-01
GR3005683T3 (ja) 1993-06-07
CA2000834C (en) 1999-08-31
GB8825073D0 (en) 1988-11-30
CA2000834A1 (en) 1990-04-26
JP2711150B2 (ja) 1998-02-10
KR900006493A (ko) 1990-05-08
ATE79647T1 (de) 1992-09-15
IE893143L (en) 1990-04-26
KR0143561B1 (ko) 1998-07-01
AU622282B2 (en) 1992-04-02

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