JP3476916B2 - 潤滑油組成物 - Google Patents

潤滑油組成物

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Publication number
JP3476916B2
JP3476916B2 JP17631594A JP17631594A JP3476916B2 JP 3476916 B2 JP3476916 B2 JP 3476916B2 JP 17631594 A JP17631594 A JP 17631594A JP 17631594 A JP17631594 A JP 17631594A JP 3476916 B2 JP3476916 B2 JP 3476916B2
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JP
Japan
Prior art keywords
oil
lubricating oil
group
weight
ppm
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
JP17631594A
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English (en)
Other versions
JPH0841480A (ja
Inventor
庄蔵 松下
直美 鈴木
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 General Sekiyu KK
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Filing date
Publication date
Application filed by Tonen General Sekiyu KK filed Critical Tonen General Sekiyu KK
Priority to JP17631594A priority Critical patent/JP3476916B2/ja
Priority to US08/750,263 priority patent/US5747430A/en
Priority to PCT/US1995/009564 priority patent/WO1996003480A1/en
Priority to CA002192491A priority patent/CA2192491A1/en
Publication of JPH0841480A publication Critical patent/JPH0841480A/ja
Application granted granted Critical
Publication of JP3476916B2 publication Critical patent/JP3476916B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • 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
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  • Lubricants (AREA)

Description

【発明の詳細な説明】 【０００１】 【産業上の利用分野】本発明は、抄紙機用潤滑油などの
軸受油、射出成型機用油圧油、フィルム延伸機用潤滑油
等に使用される潤滑油組成物であって、特に消泡性に優
れる潤滑油組成物に関する。 【０００２】 【従来の技術】潤滑油に配合されている添加剤は、一般
に極性化合物が多く、それらは界面活性である為に、潤
滑油基油に添加されると、泡立ち易くなる。また、潤滑
油は使用中に酸化を受けて劣化すると、極性の大きい酸
化物が形成されたり、添加剤が分解すること等によって
さらに極性が大きくなり、界面活性となるため、泡立つ
傾向が出てくる。 【０００３】潤滑油が泡立つと（１）潤滑油の圧縮性増
大のため、油圧作動が不良となる、（２）油圧ポンプの
効率が低下する、（３）摩擦部への給油が不十分とな
り、摩耗、焼き付き等の原因となる、（４）潤滑油と空
気の接触面積の増加により酸化が促進されるなどの弊害
を招くといった問題を生じるので、消泡性は、潤滑油に
とって非常に重要な性能の１つである。 【０００４】そのため、潤滑油用消泡剤としては、一般
にジメチルシリコーン（ジメチルシロキサン）が最も良
く使用されており、これらのジメチルシリコーンは潤滑
油の基油組成や、潤滑油使用温度に応じて、４０℃での
粘度が１００ｍｍ2 ／ｓ〜１００，０００ｍｍ2 ／ｓの
ものを単独又は混合して使用されている。 【０００５】潤滑油の消泡性の評価は、ＪＩＳ Ｋ２５
１８で規定される試験法で実施されるのが一般的であ
り、潤滑油に油温のちがい〔低温（２４℃）及び高温
（９３．５℃）での測定〕及び温度履歴を与えて泡立ち
度、泡安定度を見るもので、油温は最高９３．５℃であ
る。この消泡性評価試験では、泡立ち度及び泡安定度は
５０ｍｌ以下及び０ｍｌが望ましく、この規格に対して
は、ジメチルシロキサン消泡剤を潤滑油に約１００ｐｐ
ｍ添加することで満足出来る結果が得られる。 【０００６】 【発明が解決しようとする課題】しかしながら、潤滑油
の使用条件は、装置の小型化、高出力化の方向のため、
油温は高くなる傾向にあり、１００℃を越えて使用され
るケースも多くなってきており、例えば、抄紙機用潤滑
油などの軸受油や射出成型機用油圧油では１００℃を越
える摩擦箇所があり、高温による酸化安定性、消泡性が
重要な性能となっている。 【０００７】潤滑油の消泡性の評価方法で１００℃以上
の油温で実施するものとして、ＩＬＳＡＣ（国際潤滑油
標準化委員会）に規定される油温１５０℃での油の消泡
性評価法がある。これはエンジン油の消泡性の評価を目
的に作成された試験であるが、抄紙機油などの極めて高
温で使用される工業用潤滑油の消泡性を評価することが
できる。 【０００８】潤滑油は高粘度になる程、泡沫膜厚が大き
くなり、消泡性が悪くなる。特にＶＧ６８（６８ｍｍ2
／ｓ、ａｔ４０℃）以上の粘度の潤滑油では、ジメチル
シリコーンを１〜１００ｐｐｍ添加しても１５０℃のＩ
ＲＳＡＣ試験法では、泡立ち度／泡安定度ともいずれも
１００ｍｌ以上で、ジメチルシリコーンでは改善出来な
い。また、ジメチルシリコーンを１００ｐｐｍ以上添加
しても、ジメチルシリコーンの油中への均一分散に限界
があり、沈降し、消泡性も改善されない。本発明は、高
温条件下でも、消泡性に優れる潤滑油組成物の提供を課
題とする。 【０００９】 【課題を解決するための手段】本発明の潤滑油組成物
は、４０℃での粘度が１０ｍｍ２／ｓ〜７００ｍｍ２／
ｓの基油に、基油に対して、４０℃での粘度が１，００
０ｍｍ２／ｓ〜１００，０００ｍｍ２／ｓのオルガノポ
リシロキサンを１ｐｐｍ〜５００ｐｐｍ、及び下記一般
式（１）で示されるエチレングリコール−プロピレング
リコール重合物を１ｐｐｍ〜５，０００ｐｐｍの割合で
配合したことを特徴とする。一般式（１）： Ｒ １ Ｏ（Ｃ ２ Ｈ ４ Ｏ） ａ （Ｃ ３ Ｈ ６ Ｏ） ｂ （Ｃ ２ Ｈ
４ Ｏ） ｃ Ｒ ２ （式中、Ｒ １ 、Ｒ ２ は水素原子または炭素数１〜４のア
ルキル基を表わし、ａ、ｃは１〜３０の整数、ｂは１〜
６０の整数を表わす。） 【００１０】基油としては、鉱油系、ポリ−α−オレフ
ィン類、アルキルベンゼン等の合成炭化水素系、エステ
ル系、ポリアルキレングリコール、アルキルジフェニル
エーテル、アルキルジフェニル等またはこれらの混合油
が挙げられる。 【００１１】鉱油としては、溶剤精製または水添精製に
よる６０ニュートラル油、１００ニュートラル油等及び
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等があり、これらを単独また
は適当な割合で混合して用いることができる。 【００１２】ポリ−α−オレフィン類としては、炭素数
２〜１４、好ましくは４〜１２の範囲の分枝を有する、
或いは有しないオレフィン炭化水素から選択された任意
の１種の単独重合体又は２種以上の共重合により得られ
るものであり、平均分子量１００〜約２０００、好まし
くは２００〜約１０００の生成物から選択されるが、特
に水素化によって不飽和結合を除去したものが好まし
い。 【００１３】アルキルベンゼンとしては、主としてアル
キルベンゼン型のものであり、ベンゼンやトルエンのよ
うな芳香族炭化水素をフリーデルクラフツ反応等でアル
キル化して、洗剤の原料を作る際に副生する、主として
ジアルキル化芳香族炭化水素を含む油である。アルキル
基としては直鎖及び／又は分枝のいずれのものもこれに
属する。 【００１４】また、エステル系基油としては、ポリオー
ルエステル類、ジエステル類等を挙げることができ、単
独で使用してもよいが混合して使用してもよい。ポリオ
ールエステル、ジエステル等のエステルとしては、脂肪
族多価アルコールと直鎖状又は分枝状の脂肪酸とのポリ
オールエステル類、脂肪族多価アルコールと直鎖状又は
分枝状の脂肪酸との部分エステル類、ネオペンチルグリ
コールと、炭素数８〜２０の直鎖状又は分枝状の脂肪酸
とのジエステル類、脂肪族多価アルコールと炭素数８〜
２０の直鎖状又は分枝状の脂肪酸との部分エステル類と
直鎖状又は分枝状の脂肪族二塩基酸又は芳香族二塩基酸
とのコンプレックスエステル類、直鎖状又は分枝状の脂
肪族二塩基酸のジアルキルエステル類、芳香族二塩基酸
のジアルキルエステル類等が挙げられる。 【００１５】上記の基油で好ましいのは、鉱油及び／又
は合成炭化水素である。また、基油としては４０℃での
粘度が１０ｍｍ2 ／ｓ〜７００ｍｍ2 ／ｓの範囲のもの
を使用できる。 【００１６】次に、添加剤について説明する。消泡剤と
してのオルガノポリシロキサンとしては、平均単位式 【００１７】 【化１】 【００１８】（式中、Ｒは炭素数１〜１８の、同じか又
は異なる、場合によりハロゲン化された炭化水素基を示
し、ｎは２００〜１２００の数である）で示されるもの
であり、４０℃での粘度が１００ｍｍ2 ／ｓ〜１００，
０００ｍｍ2 ／ｓ、好ましくは３，０００ｍｍ2 ／ｓ〜
６０，０００ｍｍ2 ／ｓのものが挙げられる。４０℃で
の粘度が１００ｍｍ2 ／ｓ未満であると高温での消泡性
が悪化するので好ましくなく、１００，０００ｍｍ2 ／
ｓを越えると基油に微細粒子として分散しにくくなるた
め好ましくない。 【００１９】式中、Ｒとしてはメチル基、エチル基、ｎ
−プロピル基、ｉ−プロピル基、ｎ−ブチル基、ｉ−ブ
チル基、ｔ−ブチル基、ｎ−ペンチル基、ネオペンチル
基、ヘキシル基、ヘプチル基、オクチル基、デシル基、
及びオクタデシル基のようなアルキル基、フェニル基、
ナフチル基のようなアリ−ル基、ベンジル基、１−フェ
ニルエチル基、２−フェニルエチル基のようなアラルキ
ル基、ｏ−、ｍ−、ｐ−ジフェニル基のようなアルアリ
−ル基、ｏ−、ｍ−、ｐ−クロルフェニル基、ｏ−、ｍ
−、ｐ−ブロムフェニル基、３，３，３−トリフルオル
プロピル基、１，１，１，３，３，３−ヘキサフルオル
−２−プロピル基、ヘプタフルオルイソプロピル基及び
ヘプタフルオロ−ｎ−プロピル基のようなハロゲン化炭
化水素基である。 【００２０】オルガノポリシロキサンは、基油に対して
１ｐｐｍ〜５００ｐｐｍ、好ましくは５ｐｐｍ〜１００
ｐｐｍの割合で添加される。 【００２１】次に、エチレングリコール−プロピレング
リコール重合物について説明する。エチレングリコール
−プロピレングリコール重合物は、一般式（１） R1O (C2H4O）a (C3H6O）b (C2H4O）c R2 （式中、Ｒ1 、Ｒ2 は水素原子または炭素数１〜４のア
ルキル基を表わし、ａ、ｃは１〜３０の整数、ｂは１〜
６０の整数を表わす。）で示され、総分子中のエチレン
オキシド含有量は１０重量％〜５０重量％で、重量平均
分子量が９００〜４，０００、好ましくは１，５００〜
３，０００のものである。 【００２２】また、エチレングリコール−プロピレング
リコール重合物の誘導体としては、例えばエチレングリ
コール−プロピレングリコールのアミン縮合物が挙げら
れ、一般式（２） 【００２３】 【化２】 【００２４】（式中、Ｒ1 〜Ｒ4 は水素原子または炭素
数１〜４のアルキル基を表わし、ａ、ｃ、ｆ、ｈは１〜
２０の整数、ｂ、ｄ、ｅ、ｇは１〜３０の整数、ｎは１
〜４の整数を表わす。）で示され、総分子中のエチレン
オキシド含有量は１０重量％〜４０重量％で、重量平均
分子量が５００〜７０００、好ましくは１，５００〜
５，０００のものを使用することができる。 【００２５】その他、ＣＡＳ登録番号Ｎｏ．６８６０３
−５８−７の化合物も同様に使用することができる。 【００２６】エチレングリコール−プロピレングリコー
ル重合物、またはその誘導体は、単独でも混合して使用
してもよく、基油に対して１ｐｐｍ〜５，０００ｐｐ
ｍ、好ましくは５０ｐｐｍ〜１，０００ｐｐｍの割合で
添加される。 【００２７】また、エチレングリコール−プロピレング
リコール重合物、またはその誘導体は、オルガノポリシ
ロキサンに対して１倍量〜１，０００倍量、好ましくは
１０倍量〜１００倍量の割合で併用するとよく、また、
合計の配合量は、基油に対して１ｐｐｍ〜５，０００ｐ
ｐｍ、好ましくは１ｐｐｍ〜１，０００ｐｐｍ、更に好
ましくは１０ｐｐｍ〜５００ｐｐｍである。 【００２８】本発明の潤滑油組成物には、酸化防止剤、
流動点降下剤、摩耗防止剤、防錆剤、更には金属不活性
化剤等を添加してもよい。酸化防止剤としては、例えば
ジ（アルキルフェニル）アミン（アルキル基は炭素数４
〜２０）、フェニル−α−ナフチルアミン、アルキルジ
フェニルアミン（アルキル基は炭素数４〜２０）、Ｎ−
ニトロソジフェニルアミン、フェノチアジン、Ｎ，Ｎ’
−ジナフチル−ｐ−フェニレンジアミン、アクリジン、
Ｎ−メチルフェノチアジン、Ｎ−エチルフェノチアジ
ン、ジピリジルアミン、ジフェニルアミン、フェノール
アミン、２，６−ジ−ｔ−ブチル−α−ジメチルアミノ
パラクレゾール等のアミン系酸化防止剤、２．６−ジ−
ｔ−ブチルパラクレゾ−ル、４．４’−メチレンビス
（２．６−ジ−ｔ−ブチルフェノ−ル）、２．６−ジ−
ｔ−ブチル−４−Ｎ，Ｎ−ジメチルアミノメチルフェノ
ール、２．６−ジ−ｔ−ブチルフェノ−ル等のフェノ−
ル系酸化防止剤、また鉄オクトエ−ト、フェロセン、鉄
ナフトエ−ト等の有機鉄塩、セリウムナフトエ−ト、セ
リウムトルエ−ト等の有機セリウム塩、ジルコニウムオ
クトエ−ト等の有機ジルコニウム塩等の有機金属化合物
系酸化防止剤を使用するとよい。また上記の酸化防止剤
は単独で使用してもよいが、二種以上組み合わせて使用
することにより相乗効果を奏するようにして使用するこ
ともできる。酸化防止剤の使用割合は、基油に対して
０．００１〜５重量％、好ましくは０．０１〜２重量％
を使用するとよい。 【００２９】流動点降下剤としては、ポリアルキルメタ
クリレート系、塩素化パラフィン系、エチレン−酢酸ビ
ニル系共重合体系、エチレン−アルキルアクリレート系
共重合体系、アルケニルこはく酸アミド系化合物等を使
用するとよく、基油に対して０．００１重量％〜５重量
％、好ましくは０．０１重量％〜１．０重量％の割合で
い配合するとよい。 【００３０】摩耗防止剤には、チオ燐酸亜鉛が使用され
るが、燐酸エステル、チオ燐酸エステル、亜燐酸エステ
ル、チオカルバミン酸亜鉛、チオカルバミン酸エステ
ル、ポリスルフィド、ジスルフィド、硫化エステル、硫
化油脂などでもかまわない。摩耗防止剤の使用割合は、
基油に対して０．０１重量％〜５重量％、好ましくは
０．１重量％〜３重量％使用するとよく、単独で使用し
てもよいが、二種以上組み合わせて使用することもでき
る。 【００３１】防錆剤としては、エステル、カルボン酸、
アミン、アルコール、フェノール、カルボキシレート、
アミン塩、スルホン酸塩を使用するとよく、例えばコハ
ク酸、コハク酸エステル、オレイン酸牛脂アミド、バリ
ウムスルホネート、カルシウムスルホネート等が挙げら
れ、その使用割合は基油に対して０．０１重量％〜１０
重量％、好ましくは０．０１重量％〜１．０重量％を使
用するとよい。 【００３２】金属不活性化剤としては、例えばベンゾト
リアゾール、ベンゾトリアゾール誘導体、チアジアゾー
ル、チアジアゾール誘導体、トリアゾール、トリアゾー
ル誘導体、ジチオカルバメート等を、基油に対して０．
００１重量％〜１０重量％、好ましくは０．０１重量％
〜１．０重量％の添加割合で使用するとよい。 【００３３】 【作用及び発明の効果】高粘度潤滑油（ＶＧ６８以上）
で高温（１５０℃）での消泡性は、従来の１００℃以下
の温度で有効な消泡性を示すジメチルシリコーン又はそ
の誘導体を使用しても効果がない。又、ジメチルシリコ
ーンを多量（１００ｐｐｍ以上）に添加すると潤滑油は
白濁し、シリコーン分散粒子は沈降する。 【００３４】本発明者等は、高粘度潤滑油（ＶＧ６８以
上）で高温での泡立ち度及び泡安定度が５０ｍｌ以下に
なる消泡剤の検討を鋭意実施したところ、消泡剤として
ジメチルポリシロキサン消泡剤とエチレングリコール−
プロピレングリコール重合物とを併用することで消泡性
が大幅に改善される事を見出した。 【００３５】エチレングリコール−プロピレングリコー
ル重合物を単独で配合しても消泡性を示すものではな
く、この効果は、ジメチルポリシロキサンと併用するこ
とにより、極めて高い消泡性を発現するものである。以
下、実施例により、本発明を説明する。 【００３６】 【実施例】表１に示す実施例１〜実施例４、比較例１〜
比較例８の潤滑油組成物を調製した。表１における組成
は重量部で示す。表１での基油、添加剤について説明す
る。 基油：４０℃での粘度２２０ｍｍ2 ／ｓ、ｎ−ｄ−Ｍ環
分析で％ＣP ７０以上、％ＣN ３０以下、％ＣA １以
下、Ｓ分５０ｐｐｍ以下、Ｎ分５０ｐｐｍ以下のＶＧ２
２０の水素化精製鉱油 酸化防止剤：実施例１〜４、比較例１〜８における酸化
防止剤の内訳はヒンダードフェノール０．２重量％、ア
ルキル化ＰＡＮ（フェニル−α−ナフチルアミン：アル
キル基はＣ4 〜Ｃ12の直鎖又は分岐状）０．２重量％、
アルキル化ＤＰＮ（ジフェニルアミン：アルキル基はＣ
4 〜Ｃ12の直鎖又は分岐状）０．１重量％である。 【００３７】流動点降下剤：ポリメチルメタクリレート 防錆剤：アルケニルこはく酸エステル 消泡剤Ａ：４０℃での粘度が３５０ｍｍ２／ｓのジメチ
ルポリシロキサン 消泡剤Ｂ：４０℃での粘度が１２，５００ｍｍ２／ｓの
ジメチルポリシロキサン 消泡剤Ｃ：４０℃での粘度が６０，０００ｍｍ２／ｓの
ジメチルポリシロキサン ＰＥＧ−ＰＰＧ重合物Ａ：上述した一般式（１）で表さ
れるエチレングリコール−プロピレングリコール重合物
で、旭電化（株）製、商品名プルロニックＬ６１、重量
平均分子量２，０００ ＰＥＧ−ＰＰＧ重合物Ｂ：上述した一般式（２）で表さ
れるエチレングリコール−プロピレングリコール重合物
の誘導体でローム＆ハース社製、商品名トリトンＣＦ３
２、重量平均分子量５，７００ 実施例、比較例での潤滑油組成物について、消泡試験
を、ＪＩＳ Ｋ２５１８〔９３．５℃（Ｓｅｑ２）〕及
び、下記に示すＩＬＳＡＣ（１５０℃）により行った。
その結果を同時に表１に示す。結果はいずれも、泡立て
直後の泡の量（ｍｌ）／泡立て後５秒間放置後の泡の量
（ｍｌ）である。 【００３８】ＩＬＳＡＣ：消泡性試験法 １．浴槽の温度１５０±０．５℃に保持する。 【００３９】２．試料容器に１８０ｍｌ目盛まで潤滑油
組成物を入れ、１５０℃浴槽中に容器の９００ｍｌ目盛
まで浸す。 【００４０】３．２０分間浴槽に浸し、直ちに洗浄にし
たディフューザーストーン付、空気導入管を容器に差込
み、中央に直立させ、底面に接するように取付けて５分
間試料中に浸す。 【００４１】４．空気導入管を空気供給装置につなぎ、
流量２００±５ｍｌ／ｍｉｎでディフューザーストーン
から最初の泡が出たときから５分±３秒間乾燥空気を試
料中に吹き込む。 【００４２】５．空気供給装置から供給を止め、すばや
く泡の量を読み取る。（泡立ち度） ６．そのまま５秒間放置し、再び泡の量を読み取る。
（泡安定度） 【００４３】 【表１】 【００４４】比較例１は、消泡剤、重合物共に添加しな
い場合で、消泡性が悪いことがわかる。これに消泡剤
Ａ、Ｂ、Ｃを０．００１％添加した場合、比較例２、
３、４のようにＪＩＳ法（９３．５℃）では泡立ち度、
泡安定度とも０ｍｌまで低下するが、測定温度が１５０
℃では泡立ち度、泡安定度は５０ｍｌ以下にはならない
ことがわかる。 【００４５】また、比較例１のサンプルにＰＥＧ−ＰＰ
Ｇ重合物Ａ又はＢを添加したケース、即ち比較例５、６
では、ＪＩＳ法では泡立ち度、泡安定度とも比較例１よ
り若干良くなるものの、ＩＬＳＡＣ法では全く改善され
ないことがわかる。 【００４６】これに対して、実施例１〜４に見られるよ
うに、比較例１に消泡剤とＰＥＧ−ＰＰＧ重合物を組み
合わせ添加すると、ＪＩＳ法、ＩＬＳＡＣ法共に消泡性
が顕著に改善されることがわかる。即ち、消泡剤単独
（比較例２〜４）及びＰＥＧ−ＰＰＧ重合体単独（比較
例５、６）を添加する場合と比較すると、両添加剤の併
用効果が著しい事がわかる。 【００４７】また、消泡剤は消泡剤Ａのように低粘度の
ものでは、ＰＥＧ−ＰＰＧ重合体と併用しても、比較例
７、８のように効果が無いことがわかる。消泡剤Ｂ及び
Ｃのような高粘度のものがＰＥＧ−ＰＰＧ重合体Ａ及び
Ｂと併用効果を発現することがわかる。
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｃ１０Ｎ 20:02 Ｃ１０Ｎ 30:08 30:08 30:18 30:18 40:02 40:02 40:08 40:08 (56)参考文献 特開 昭49−47498（ＪＰ，Ａ) 特開 昭57−159892（ＪＰ，Ａ) 特開 昭59−105091（ＪＰ，Ａ) 特開 平６−57276（ＪＰ，Ａ) 特開 平１−161091（ＪＰ，Ａ) 米国特許3235501（ＵＳ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C10M 157/10 C10M 145/26 - 145/38 C10M 149/12 - 149/14 C10M 155/02 C10N 20:02 C10N 30:08 C10N 30:18 C10N 40:02 C10N 40:08

Claims (1)

  1. (57)【特許請求の範囲】 【請求項１】 ４０℃での粘度が１０ｍｍ２／ｓ〜７０
    ０ｍｍ２／ｓの基油に、基油に対して、４０℃での粘度
    が１，０００ｍｍ２／ｓ〜１００，０００ｍｍ２／ｓの
    オルガノポリシロキサンを１ｐｐｍ〜５００ｐｐｍ、及
    び下記一般式（１）で示されるエチレングリコール−プ
    ロピレングリコール重合物を１ｐｐｍ〜５，０００ｐｐ
    ｍの割合で配合したことを特徴とする潤滑油組成物。一般式（１）： Ｒ １ Ｏ（Ｃ ２ Ｈ ４ Ｏ） ａ （Ｃ ３ Ｈ ６ Ｏ） ｂ （Ｃ ２ Ｈ
    ４ Ｏ） ｃ Ｒ ２ （式中、Ｒ １ 、Ｒ ２ は水素原子または炭素数１〜４のア
    ルキル基を表わし、ａ、ｃは１〜３０の整数、ｂは１〜
    ６０の整数を表わす。）
JP17631594A 1994-07-28 1994-07-28 潤滑油組成物 Expired - Fee Related JP3476916B2 (ja)

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JP17631594A JP3476916B2 (ja) 1994-07-28 1994-07-28 潤滑油組成物
US08/750,263 US5747430A (en) 1994-07-28 1995-07-08 Lubricant composition
PCT/US1995/009564 WO1996003480A1 (en) 1994-07-28 1995-07-28 Lubricant composition
CA002192491A CA2192491A1 (en) 1994-07-28 1995-07-28 Lubricant composition

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JP17631594A JP3476916B2 (ja) 1994-07-28 1994-07-28 潤滑油組成物

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DE69630040T2 (de) * 1995-07-10 2004-04-08 Idemitsu Kosan Co. Ltd. Kältemaschinenöl und methode zur schmierung damit
JP2002097485A (ja) * 2000-09-22 2002-04-02 Nippon Mitsubishi Oil Corp 抄紙機用潤滑油組成物
US7662271B2 (en) * 2005-12-21 2010-02-16 Chevron U.S.A. Inc. Lubricating oil with high oxidation stability
US7547666B2 (en) * 2005-12-21 2009-06-16 Chevron U.S.A. Inc. Ashless lubricating oil with high oxidation stability
JP5577954B2 (ja) * 2010-08-26 2014-08-27 トヨタ自動車株式会社 潤滑油組成物
JP6924693B2 (ja) * 2017-12-26 2021-08-25 Ｅｎｅｏｓ株式会社 潤滑油組成物
WO2023189764A1 (ja) * 2022-03-30 2023-10-05 出光興産株式会社 潤滑油組成物並びに引火点向上剤及び引火点向上方法

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NL272723A (ja) * 1951-05-31
US2674619A (en) * 1953-10-19 1954-04-06 Wyandotte Chemicals Corp Polyoxyalkylene compounds
US3101374A (en) * 1958-08-19 1963-08-20 Wyandotte Chemicals Corp Polyoxyalkylene surface active agents having heteric polyoxyethylene solubilizing chains
US3235501A (en) * 1962-06-11 1966-02-15 Socony Mobil Oil Co Inc Foam-inhibited oil compositions
US4125470A (en) * 1976-04-02 1978-11-14 Dow Corning Corporation Band-ply lubricant concentrates
US4151101A (en) * 1977-12-23 1979-04-24 Stauffer Chemical Company Method and composition for controlling foam in non-aqueous fluid systems

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WO1996003480A1 (en) 1996-02-08
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