JP3980146B2 - Lubricating oil additive composition and lubricating oil composition - Google Patents
Lubricating oil additive composition and lubricating oil composition Download PDFInfo
- Publication number
- JP3980146B2 JP3980146B2 JP01810998A JP1810998A JP3980146B2 JP 3980146 B2 JP3980146 B2 JP 3980146B2 JP 01810998 A JP01810998 A JP 01810998A JP 1810998 A JP1810998 A JP 1810998A JP 3980146 B2 JP3980146 B2 JP 3980146B2
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- lubricating oil
- oil
- composition
- additive composition
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- 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
- 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
- C10M141/06—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 nitrogen-containing compound
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- C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
- C10M133/52—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of 30 or more atoms
- C10M133/56—Amides; Imides
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- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/087—Boron oxides, acids or salts
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- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/024—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings having at least two phenol groups but no condensed ring
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- C10M2207/02—Hydroxy compounds
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- C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
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- C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/027—Neutral salts thereof
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- C10M2207/142—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings polycarboxylic
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- C10M2207/262—Overbased carboxylic acid salts derived from hydroxy substituted aromatic acids, e.g. salicylates
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- C10M2207/282—Esters of (cyclo)aliphatic oolycarboxylic acids
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- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
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Description
【０００１】
【発明の属する技術分野】
本発明は、潤滑油添加剤組成物および潤滑油組成物に関し、特に作動油や自動変速機用潤滑油の調製に有利に利用できる潤滑油添加剤組成物および作動油や自動変速機用潤滑油とし有用な潤滑油組成物に関する。
【０００２】
【従来の技術】
従来より、内燃機関や工作機械に潤滑作用を付与するために様々な潤滑油が利用されている。初期の潤滑油は、鉱油や植物油などの基油成分のみで使用されていたが、潤滑油に対する様々な機能の要求の高まりに応じて、種々の添加成分、すなわち潤滑油添加剤が添加されるようになった。従って、現在使用されている潤滑油の殆どは、基油に一種以上の添加剤が分散もしくは溶解された状態にある潤滑油組成物である。
【０００３】
潤滑油組成物は、様々な用途に用いられており、その代表的な用途として自動車や船舶の内燃機関の潤滑に用いられる潤滑油組成物、いわゆるエンジン油がある。このエンジン油は、内燃機関内での潤滑作用と共に、クランクケース内で発生する燃焼残査などのスラッジを分散させてクランクケース内に堆積するのを防ぐ役目をする。このため、エンジン油は一般に、基油に、清浄分散剤（金属含有清浄剤、無灰分散剤、あるいはそれらの組合わせ）、極圧剤、酸化防止剤、耐摩耗剤、腐食防止剤、消泡剤、粘度指数向上剤などが適宜組み合わされて添加された組成を有している。
【０００４】
一方、同じく潤滑油の代表例の一つである作動油や自動変速機油の場合、その要求性能については、エンジン油の場合と共通点もあるが、かなりの部分で相違する。たとえば、作動油や自動変速機油の場合には、耐摩耗作用や防錆作用、そして酸化防止作用への要求が高くなるが、スラッジなどの分散作用への要求は相対的に低くなる。
【０００５】
また、作動油や自動変速機油などにおいては、高い摩擦係数を持つことが必要とされる場合がある。すなわち、潤滑油は一般に摩擦係数を低下させる役目が期待されることが多いが、建設機械のディスク内蔵型の駐車ブレーキ（ディスクブレーキ）に使用される作動油では、ディスクブレーキの効果を高めるために潤滑油は高い摩擦係数を示すことが期待されている。また、自動変速機においては、複数のクラッチ板を結合することで動力が伝達されるが、ここで使用する潤滑油（自動変速機油）がクラッチ板に与える摩擦係数が充分でないと、動力の伝達が円滑に行われにくくなる。
【０００６】
上記の様に、たとえば作動油や自動変速機油のような潤滑油については、高い摩擦係数を持つことが必要であることが多い。そして、その摩擦係数の温度依存性（特に、高温度での摩擦係数の低下）が少ないことが望ましい。すなわち、作動油や自動変速機油などの潤滑油は、その使用中に温度が上昇することが多く、そのような高温で摩擦係数が低くなると、確実なブレーキ作用の発現が困難になったり、動力の伝達の安定性が低下することになる。
【０００７】
エンジン油の場合には一般には、上記のような高い摩擦係数の付与は要求されない。しかしながら、たとえば、建設機械のディーゼルエンジンの潤滑油（ディーゼルエンジン油）では、その建設機械中でミッション油や作動油と兼用されることも多いことから、ディーゼルエンジン油についても、高い摩擦係数を持つことが要求される場合も多い。
【０００８】
従来から、摩擦係数調整剤として、高級脂肪酸、高級アルコール、脂肪族アミン、脂肪酸アミド、脂肪酸エステル、硫化油脂、酸性リン酸エステル、酸性亜リン酸エステル、油溶性有機モリブデン化合物、固体潤滑剤などの化合物が知られているが、潤滑油に高い摩擦係数を与える添加剤、特に高温でも高い摩擦係数を与える添加剤はこれまで知られていない。
【０００９】
【発明が解決しようとする課題】
本発明の課題は、特に作動油や自動変速機用潤滑油などのような高い摩擦係数が要求される潤滑油の調製に有利に利用できる潤滑油添加剤組成物を提供することにある。本発明では特に、高温でも潤滑油に高い摩擦係数を付与する潤滑油添加剤組成物を提供することにある。
本発明の課題はまた、作動油や自動変速機用潤滑油とし有用な潤滑油組成物を提供することにある。特に、本発明では、高温においても高い摩擦係数を示す潤滑油組成物を提供することにある。
【００１０】
【課題を解決するための手段】
本発明は、ポリイソブテニルコハク酸イミド無灰分散剤とイソフタル酸とを含む潤滑油添加剤組成物にある。
本発明はまた、ポリイソブテニルコハク酸イミド無灰分散剤とイソフタル酸とが基油に溶解されてなることを特徴とする潤滑油組成物にもある。
本発明の潤滑油添加剤組成物と潤滑油組成物において、上記のポリイソブテニルコハク酸イミド無灰分散剤とイソフタル酸とは塩を形成した状態にあることが望ましい。また、イソフタル酸１モルに対して上記無灰分散剤が０．９モル以上の量（平均有効成分換算量）にて用いられることが望ましい。
【００１１】
【発明の実施の形態】
本発明の潤滑油添加剤組成物は、ポリイソブテニルコハク酸イミド無灰分散剤とイソフタル酸とを含むものである。
ポリイソブテニルコハク酸イミド無灰分散剤の例としては、公知のポリイソブテニルコハク酸イミド系分散剤、およびその変性物（ホウ素化物、有機酸変性物、環状カーボネート変性物など）を挙げることができる。
【００１２】
本発明の潤滑油添加剤組成物は、イソフタル酸を含むことを特徴とする。
【００１３】
イソフタル酸とポリイソブテニルコハク酸イミド無灰分散剤との比率については特に限定はないが、イソフタル酸１モルに対して、ポリイソブテニルコハク酸イミド無灰分散剤を０．９モル以上となるような量（潤滑油添加剤組成物の場合には、１０モル以下であることが好ましい）で用いることが好ましい。すなわち、イソフタル酸はそれ自体、潤滑油組成物の基油となる鉱物油、植物油、合成油などに溶解しにくいが、ポリイソブテニルコハク酸イミド無灰分散剤と組合わせて塩の状態とした場合に溶解が容易になる。従って、本発明の潤滑油添加剤組成物は、その大部分がイソフタル酸とポリイソブテニルコハク酸イミド無灰分散剤との塩からなることが好ましい。
【００１４】
本発明の潤滑油組成物で用いる基油としては、通常の潤滑油組成物の調製において用いられているか、あるいは用いることが提案されている鉱物油系基油、植物油などのエステル系基油、合成油系基油を用いることができる。鉱物油系基油としては、４０℃での粘度が１ｃＳｔ〜１０００ｃＳｔ（好ましくは２ｃＳｔ〜５０ｃＳｔ）の鉱物油が用いられる。鉱物油系基油はとして、溶剤抽出法により得られた潤滑油基油、水素化処理による潤滑油基油（例えば、粘度指数が８０以上で芳香族分が３重量％以下、そして硫黄分含量が３０ｐｐｍ以下のもの）などを挙げることができる。植物油系基油としては、ナタネ油、綿実油、ヒマシ油などを挙げることができる。合成油系基油の例としては、二塩基酸エステル（例、アジピン酸イソデシル）及びポリオールエステル（例、トリメチルプロパンのカプリル酸エステルあるいはオレイン酸エステル）などのエステル系合成油基油、そしてポリアルファオレフィン系基油などを挙げることができる。
【００１５】
本発明の潤滑油組成物中には、イソフタル酸が０．０１〜１０重量％、特に０．０３〜０．１重量％（潤滑油組成物全体に対する割合）の範囲の量にて含まれていることが好ましい。そして、そのイソフタル酸は、ポリイソブテニルコハク酸イミド無灰分散剤との塩の形となり、溶解状態で存在していることが好ましい。
【００１６】
本発明の潤滑油添加剤組成物および潤滑油組成物は、上記のイソフタル酸とポリイソブテニルコハク酸イミド無灰分散剤以外にも、各種の潤滑油添加剤成分を含んでいてもよい。そのような潤滑油添加剤成分の例としては次の様な化合物を挙げることができる。
【００１７】
金属含有清浄剤：高塩基性あるいは中塩基性のカルシウムスルホネート、カルシウムフェネート、カルシウムサリシレート、カルシウムナフテネート、バリウムスフホネート、バリウムフェネート、バリウムフェネート、バリウムナフテネート、マグネシウムスルホネート、マグネシウムフェネート、マグネシウムサリシレートなど。
窒素原子含有無灰分散剤以外の無灰分散剤：ポリイソブテニル系コハク酸エステル分散剤およびその変性物（ホウ素化物、有機酸変性物、環状カーボネート変性物など）など。
【００１８】
酸化防止剤：フェノール系酸化防止剤、アミン系酸化防止剤、硫黄系過酸化物分解剤など。
極圧剤あるいは耐摩耗剤：ジアルキルジチオフォスフェート亜鉛塩、ジアルキルジチオカルバメートモリブデン塩、硫化オレフィン、サルファイド、フォスファイト、フォスフェート、アミンフォスフェートなど。
腐食防止剤：ベンゾトリアゾール、チアジアゾール、Ｎ，Ｎ’−ジサリチリデン−１，２−アミノプロパンなど。
【００１９】
摩擦調整剤：高級脂肪酸、高級アルコール、脂肪族アミン、脂肪酸アミド、脂肪酸エステル、硫化油脂、酸性リン酸エステル、酸性亜リン酸エステル、油溶性有機モリブデン化合物、固体潤滑剤など。
消泡剤：ジメチルポリシロキサン、ポリアクリレートなど。
流動点降下剤：ポリアルキルアクリレート、ポリアルキルメタクリレート、ポリブテン、ポリアルキルスチレン、ポリビニルアセテートなど。
粘度指数向上剤：ポリアルキルアクリレート、ポリアルキルメタクリレート、オレフィンコポリマー、ゴム系粘度指数向上剤、これらのポリマーに分散性を付与する基が付けられた分散性粘度指数向上剤など。
その他の添加成分：さび止め剤、抗乳化剤、着色剤など。
【００２０】
【実施例】
［比較例１］ 鉱物性基油（粘度：４０℃において約２０ｃＳｔ）とポリイソブテニルコハク酸イミドとをフラスコに仕込み、これを加熱して昇温させ、撹拌しながら略等モルのフタル酸を徐々に添加した。添加が終了後、さらに約１５０℃にて４時間撹拌を続けて、ポリイソブテニルコハク酸イミド２モルとフタル酸約１モルとを含む塩がフタル酸量換算で４．０重量％の濃度（ポリイソブテニルコハク酸イミドの濃度：５０重量％）で含まれる潤滑油添加剤組成物を得た。
【００２１】
［実施例１］
フタル酸をイソフタル酸に変えた以外は比較例１と同じ操作を行なって、ポリイソブテニルコハク酸イミドとイソフタル酸との略等モルの塩がイソフタル酸量換算で４．０重量％の濃度で含まれる潤滑油添加剤組成物を得た。
【００２２】
［比較例２］
フタル酸をテレフタル酸に変えた以外は比較例１と同じ操作を行なって、ポリイソブテニルコハク酸イミドとテレフタル酸との略等モルの塩がテレフタル酸量換算で４．０重量％の濃度で含まれる潤滑油添加剤組成物を得た。
【００２３】
［参考例］
ポリイソブテニルコハク酸イミドをホウ素化ポリイソブテニルコハク酸イミドに変えた以外は比較例１と同じ操作を行なって、ホウ素化ポリイソブテニルコハク酸イミドとフタル酸との略等モルの塩がフタル酸量換算で４．０重量％の濃度（ホウ素化ポリイソブテニルコハク酸イミドの濃度：６０重量％）で含まれる潤滑油添加剤組成物を得た。
【００２４】
［比較例３］
ポリイソブテニルコハク酸イミドが溶解された潤滑油添加剤組成物（ポリイソブテニルコハク酸イミド濃度：５０重量％）を用意した。
【００２５】
［比較例４］
ホウ素化ポリイソブテニルコハク酸イミドが溶解された潤滑油添加剤組成物（ホウ素化ポリイソブテニルコハク酸イミド濃度：６０重量％）を用意した。
【００２６】
［比較例５］
フタル酸をアルケニルコハク酸に変えた以外は比較例１と同じ操作を行ない、ポリイソブテニルコハク酸イミドとアルケニルコハク酸との略等モルの塩がアルケニルコハク酸量換算で３．２５重量％の濃度で含まれる潤滑油添加剤組成物を得た。
【００２７】
［潤滑油組成物の摩擦係数の評価１］
（１）潤滑油組成物試料の調製
１）合成油系基油（ポリオールポリエステル系基油、粘度：４０℃において約４０ｃＳｔ）に、下記添加剤が記載量となるようにして潤滑油組成物を調製した。
カルシウムフェネート（０．２重量％）、カルシウムスルホネート（０．０５重量％）、フェノール系酸化防止剤（０．０５重量％）、 アミン系酸化防止剤（０．０５重量％）、アルキルジチオジアゾール（０．０１重量％）、ベンゾトリアゾール（０．０１重量％）、硫化油脂（０．０１重量％）。
【００２８】
２）上記の潤滑油組成物１００重量部に対して、前記の実施例、参考例あるいは比較例で得た潤滑油添加剤組成物を２重量部（ただし、潤滑油組成物試料５では３重量部、潤滑油組成物試料６では４重量部、潤滑油組成物試料７では５重量部）添加して、潤滑油組成物試料を調製した。
【００２９】
（２）摩擦係数の測定
小松エンジニアリング製マイクロクラッチ試験機を用い、ＫＥＳ０７．８０２に規定び測定法に従って摩擦係数を測定した。即ち、規定のディスクとプレートとを潤滑油存在下で接触させ、面圧を４ｋｇｆ／ｃｍ2 に調整し、ディスクを２０ｒｐｍで回転させた。試験温度は、室温（２５℃）、６０℃、８０℃、１００℃、１２０℃、そして１４０℃と変化させ、各温度で摩擦係数を測定した。
【００３０】
（３）測定結果
下記の第１表に示す。
【００３１】
【表１】
第１表
────────────────────────────────────
潤滑油組成物 測 定 温 度
試料番号 ２５℃ ６０℃ ８０℃ １００℃ １２０℃ １４０℃
────────────────────────────────────
１（比較例１） 0.1367 0.1477 0.1508 0.1522 0.1545 0.1544
２（実施例１） 0.1467 0.1656 0.1690 0.1683 0.1649 0.1607
３（比較例２） 0.1362 0.1479 0.1527 0.1530 0.1516 0.1457
４（参考例） 0.1386 0.1527 0.1513 0.1467 0.1459 0.1440
５（参考例） 0.1392 0.1511 0.1510 0.1486 0.1409 0.1328
６（参考例） 0.1403 0.1676 0.1717 0.1686 0.1610 0.1532
７（参考例） 0.1426 0.1729 0.1773 0.1782 0.1766 0.1717
８（比較例３） 0.1219 0.1484 0.1270 0.1221 0.1204 0.1200
９（比較例４） 0.1205 0.1311 0.1301 0.1289 0.1267 0.1239
10（比較例５） 0.1391 0.1482 0.1428 0.1374 0.1323 0.1272
────────────────────────────────────
注：試料番号の後の括弧内には、当該潤滑油組成物の調製に使用した潤滑油添加剤組成物に対応する実施例、参考例そして比較例とを示してある。
【００３２】
上記の第１表の測定結果から、本発明に従う潤滑油添加剤組成物を用いた本発明の潤滑油組成物（試料２：実施例１）は、室温で高い摩擦係数を示し、かつ高温度でも高い摩擦係数を維持することが分る。一方、芳香族カルボン酸を含まない潤滑油組成物（比較例３の潤滑油添加剤組成物を用いた試料８、および比較例４の潤滑油添加剤組成物を用いた試料９）では、室温における摩擦係数が低く、高温でも低い摩擦係数が維持されることが分る。そして芳香族カルボン酸ではなく、脂肪族カルボン酸を用いた潤滑油組成物（比較例５の潤滑油添加剤組成物を用いた試料１０）では、室温では高い摩擦係数を示すが、高温において摩擦係数が大きく低下することが分る。
【００３３】
［潤滑油組成物の摩擦係数の評価２］
（１）潤滑油組成物試料の調製
１）鉱物油系基油（水素化処理を施した鉱物油系基油、粘度：４０℃において約３０ｃＳｔ）に、下記添加剤が記載量となるようにして潤滑油組成物を調製した。
アルキルジチオリン酸亜鉛（０．３重量％）、フェノール系酸化防止剤（０．０５重量％）、 ジノニルナフタレンスルホン酸亜鉛（０．０２５重量％）、アルキルサリチル酸カルシウム塩（０．０２５重量％）、アルキルフェノールカルシウム塩（０．０８重量％）、ポリプロピレングリコール（０．０３重量％）、グリセロールモノオレート（０．１５重量％）。
【００３４】
２）上記の潤滑油組成物１００重量部に対して、前記の実施例１で得た潤滑油添加剤組成物を１重量部添加し、潤滑油組成物試料（試料１１）を調製した。また、上記の潤滑油組成物のみを比較試料（試料１２）とした。
【００３５】
（２）摩擦係数の測定
小松エンジニアリング製マイクロクラッチ試験機を用い、ＫＥＳ０７．８０２に規定の測定法に従って、摩擦係数を測定した。即ち、規定のディスクとプレートとを潤滑油存在下で接触させ、面圧を４ｋｇｆ／ｃｍ2 に調整し、ディスクを２０ｒｐｍで回転させた。試験温度は、室温（２５℃）、６０℃、８０℃、１００℃、１２０℃、そして１４０℃と変化させ、各温度で摩擦係数を測定した。
【００３６】
（３）測定結果
下記の第２表に示す。
【００３７】
【表２】
第２表
────────────────────────────────────
潤滑油組成物 測 定 温 度
試料番号 ２５℃ ６０℃ ８０℃ １００℃ １２０℃ １４０℃
────────────────────────────────────
11（実施例１） 0.1248 0.1350 0.1479 0.1503 0.1472 0.1401
12（比較試料） 0.1428 0.1250 0.1168 0.1064 0.0978 0.0899
────────────────────────────────────
注：試料番号の後の括弧内には、当該潤滑油組成物の調製に使用した潤滑油添加剤組成物に対応する実施例を示してある。
【００３８】
上記の第２表の測定結果から、本発明に従う潤滑油添加剤組成物を用いた本発明の潤滑油組成物（試料番号１１）は、室温で高い摩擦係数を示し、かつ高温度でも高い摩擦係数を維持することが分る。一方、イソフタル酸を含まない潤滑油組成物（試料番号１２）では、室温における摩擦係数は高いが、高温になると摩擦係数が顕著に低下することが分る。
【００３９】
次に本発明に従う潤滑油組成物の配合例を列記する。なお、各配合において、必要に応じて、更に消泡剤などの他の添加剤を加える。
【００４０】
（１）油圧作動油１
本発明の潤滑油添加剤組成物 ０．０１〜２重量％
アルキルジチオリン酸亜鉛 ０．４重量％
フェノール系酸化防止剤 ０．０５重量％
ジノニルナフタレンスルホン酸亜鉛 ０．０２５重量％
ソルビタンモノオレート ０．０２５重量％
ポリアルキレンポリアミン脂肪酸アミン ０．０２重量％
アルキルサリチル酸カルシウム塩 ０．０２重量％
フォスファイト系耐摩耗剤 ０．０５重量％
基油 残部
【００４１】
（２）油圧作動油２
本発明の潤滑油添加剤組成物 ０．０１〜２重量％
アルキルジチオリン酸亜鉛 １．０重量％
ジノニルナフタレンスルホン酸亜鉛 ０．０５重量％
アルケニルコハク酸 ０．１重量％
ポリオキシアルキレンアルキルエーテル ０．０２重量％
基油 残部
【００４２】
（３）油圧作動油３
本発明の潤滑油添加剤組成物 ０．０１〜２重量％
アルキルジチオリン酸亜鉛 ０．４重量％
フェノール系酸化防止剤 ０．０５重量％
ジノニルナフタレンスルホン酸亜鉛 ０．０２５重量％
アルキルサリチル酸カルシウム塩 ０．０２重量％
アルキルフェノールカルシウム塩 ０．１重量％
ポリプロピレングリコール ０．０３重量％
ポリメタクリレート系粘度指数向上剤 ０．４重量％
基油 残部
【００４３】
（４）油圧作動油４
本発明の潤滑油添加剤組成物 ０．０１〜２重量％
フェノール系酸化防止剤 ０．０５重量％
ソルビタンモノオレート ０．０４重量％
ポリプロピレングリコール ０．００２重量％
ポリオキシアルキレンアルキルエーテル ０．００１重量％
フォスファイト系耐摩耗剤 ０．５重量％
アミン系酸化防止剤 ０．１重量％
メチルベンゾトリアゾール ０．０１重量％
ジベンジルサルファイド ０．０５重量％
牛脂ジアミンジオレイン酸塩 ０．０１５重量％
ジイソトリデシルアジペート ０．６重量％
基油 残部
【００４４】
（５）油圧作動油５
本発明の潤滑油添加剤組成物 ０．０１〜２重量％
フェノール系酸化防止剤 ０．０５重量％
アルキルフェノールカルシウム塩 ０．２重量％
アミン系酸化防止剤 ０．０５重量％
ピネンＰ2 Ｓ5 ０．２重量％
アルケニルコハク酸イミド ０．０５重量％
イミダゾリン誘導体 ０．０５重量％
基油 残部
【００４５】
（６）ギア油１
本発明の潤滑油添加剤組成物 ０．１〜５重量％
アルキルフェノールカルシウム塩 １．５重量％
グリセロールモノオレート ０．３重量％
フォスファイト系耐摩耗剤 ０．６５重量％
アミン系酸化防止剤 ０．４重量％
メチルベンゾトリアゾール ０．０３重量％
アルケニルコハク酸イミド ４．５重量％
アミンフォスフェート ０．５重量％
硫化オレフィン ０．０５重量％
基油 残部
【００４６】
（７）ギア油２
本発明の潤滑油添加剤組成物 ０．１〜５重量％
アルキルフェノールカルシウム塩 １．０重量％
グリセロールモノオレート ０．３重量％
フォスファイト系耐摩耗剤 ０．６５重量％
アミン系酸化防止剤 ０．４重量％
メチルベンゾトリアゾール ０．０３重量％
アルケニルコハク酸イミド ４．５重量％
ジノニルカルシウムスルフォネート ０．５重量％
アミンフォスフェート ０．５重量％
硫化オレフィン ０．０５重量％
ジエタノールココアミド ０．５重量％
基油 残部
【００４７】
（８）ギア油３
本発明の潤滑油添加剤組成物 ０．１〜５重量％
アルキルフェノールカルシウム塩 １．０重量％
グリセロールモノオレート ０．７重量％
フォスファイト系耐摩耗剤 ０．６５重量％
アミン系酸化防止剤 ０．４重量％
メチルベンゾトリアゾール ０．０３重量％
アルケニルコハク酸イミド ４．５重量％
ジノニルカルシウムスルフォネート ０．５重量％
アミンフォスフェート ０．５重量％
硫化オレフィン ０．０５重量％
ジエタノールココアミド ０．３重量％
ポリメタクリレート系粘度指数向上剤 ５．０重量％
基油 残部
【００４８】
（９）自動変速機（ＡＴＦ）油１
本発明の潤滑油添加剤組成物 ０．１〜７重量％
アルキルジチオリン酸塩 １．０重量％
フェノール系酸化防止剤 ０．２重量％
アルキルサリチル酸カルシウム塩 ０．７重量％
アルキルフェノールカルシウム塩 １．０重量％
アルキルスルホン酸カルシウム塩 １．７重量％
アルキルスルホン酸マグネシウム塩 ２．５重量％
アミン系酸化防止剤 ０．１重量％
アルケニルコハク酸イミド １．０重量％
ポリメタクリレート系粘度指数向上剤 １７．０重量％
基油 残部
【００４９】
（１０）自動変速機（ＡＴＦ）油２
本発明の潤滑油添加剤組成物 ０．１〜７重量％
アルキルジチオリン酸塩 ０．７重量％
ポリオキシエチレンアルキルアリルエーテル ０．０８重量％
メチルベンゾトリアゾール ０．０３重量％
硫化オレフィン １．０重量％
ホウ酸カリウム ２．０重量％
ポリメタクリレート系粘度指数向上剤 １７．０重量％
基油 残部
【００５０】
（１１）自動変速機（ＡＴＦ）油３
本発明の潤滑油添加剤組成物 ０．１〜７重量％
アルキルジチオリン酸塩 ０．７重量％
フェノール系酸化防止剤 ０．２重量％
アルキルフェノールカルシウム塩 ０．６重量％
アルキルスルホン酸カルシウム塩 ０．２重量％
アルキルスルホン酸マグネシウム塩 ０．１重量％
アミン系酸化防止剤 ０．１重量％
ピネンＰ2 Ｓ5 ０．５重量％
ホウ酸カリウム ２．０重量％
ポリメタクリレート系粘度指数向上剤 １７．０重量％
基油 残部
【００５１】
（１２）ディーゼルエンジン油１
本発明の潤滑油添加剤組成物 ０．５〜８重量％
アルキルジチオリン酸塩 １．１重量％
アルキルサリチル酸カルシウム塩 ２．０重量％
アルキルフェノールカルシウム塩 １．７重量％
アルキルスルホン酸カルシウム塩 １．２重量％
ポリオキシエチレンアルキルアリルエーテル ０．１重量％
アルケニルコハク酸イミド １．５重量％
基油 残部
【００５２】
（１３）ディーゼルエンジン油２
本発明の潤滑油添加剤組成物 ０．５〜８重量％
アルキルジチオリン酸塩 １．３重量％
フェノール系酸化防止剤 ０．２重量％
アルキルフェノールカルシウム塩 ３．２重量％
アルキルスルホン酸カルシウム塩 ２．０重量％
アミン系酸化防止剤 ０．２重量％
アルケニルコハク酸イミド ４．０重量％
ポリメタクリレート系粘度指数向上剤 ３．０重量％
基油 残部
【００５３】
（１４）ディーゼルエンジン油３
本発明の潤滑油添加剤組成物 ０．５〜８重量％
アルキルジチオリン酸塩 １．３重量％
フェノール系酸化防止剤 ０．２重量％
アルキルフェノールカルシウム塩 ３．２重量％
アルキルスルホン酸カルシウム塩 ２．０重量％
アミン系酸化防止剤 ０．２重量％
アルケニルコハク酸イミド ４．０重量％
オレフィンコポリマー系粘度指数向上剤 ６．０重量％
基油 残部
【００５４】
（１５）ディーゼルエンジン油４
本発明の潤滑油添加剤組成物 ０．５〜８重量％
アルキルジチオリン酸塩 １．６重量％
アルキルフェノールカルシウム塩 ３．２重量％
アルキルスルホン酸カルシウム塩 １．４重量％
アルキルスルホン酸マグネシウム塩 ０．８重量％
アルケニルコハク酸イミド ９．０重量％
オレフィンコポリマー系粘度指数向上剤 ８．０重量％
基油 残部
【００５５】
（１６）ディーゼルエンジン油５
本発明の潤滑油添加剤組成物 ０．５〜８重量％
アルキルジチオリン酸塩 １．３重量％
フェノール系酸化防止剤 ０．２重量％
アルキルフェノールカルシウム塩 ３．２重量％
アルキルスルホン酸カルシウム塩 ２．０重量％
アミン系酸化防止剤 ０．２重量％
アルケニルコハク酸イミド ４．０重量％
モリブデンジチオカルバメート ０．５重量％
ポリメタクリレート系粘度指数向上剤 ３．０重量％
基油 残部
【００５６】
（１７）ディーゼルエンジン油６
本発明の潤滑油添加剤組成物 ０．５〜８重量％
アルキルジチオリン酸塩 １．３重量％
フェノール系酸化防止剤 ０．２重量％
アルキルフェノールカルシウム塩 ３．２重量％
アルキルスルホン酸カルシウム塩 ２．０重量％
アミン系酸化防止剤 ０．２重量％
アルケニルコハク酸イミド ４．０重量％
モリブデンジチオフォスフェート ０．５重量％
ポリメタクリレート系粘度指数向上剤 ３．０重量％
基油 残部
【００５７】
【発明の効果】
本発明の潤滑油添加剤組成物は、潤滑油に充分な摩擦係数を与えるため、特に作動油、ギア油、そして自動変速機油などに添加するのに適している。また、公知の清浄分散剤や耐極圧剤（耐摩耗剤）などと併用して、ディーゼルエンジン油と作動油とを兼用する潤滑油に添加するのに適している。従って、本発明の潤滑作動油、ギア油、そして自動変速機油などとして有用であり、また、公知の清浄分散剤や耐極圧剤（耐摩耗剤）などを更に添加することにより、ディーゼルエンジン油と作動油とを兼用する潤滑油として広範な用途に適した潤滑油となる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lubricating oil additive composition and a lubricating oil composition, and more particularly to a lubricating oil additive composition, a working oil and a lubricating oil for an automatic transmission that can be advantageously used for the preparation of a working oil and a lubricating oil for an automatic transmission. And a useful lubricating oil composition.
[0002]
[Prior art]
Conventionally, various lubricating oils have been used to impart a lubricating action to internal combustion engines and machine tools. Early lubricating oils were used only with base oil components such as mineral oil and vegetable oil, but various additive components, that is, lubricating oil additives, are added according to the increasing demand for various functions for lubricating oils. It became so. Accordingly, most of the lubricating oils currently used are lubricating oil compositions in which one or more additives are dispersed or dissolved in the base oil.
[0003]
Lubricating oil compositions are used in a variety of applications, and typical examples include lubricating oil compositions used for lubricating internal combustion engines of automobiles and ships, so-called engine oils. This engine oil plays a role of preventing sludge such as combustion residue generated in the crankcase from dispersing and accumulating in the crankcase together with a lubricating action in the internal combustion engine. For this reason, engine oils are generally based on base oils, detergent dispersants (metal-containing detergents, ashless dispersants, or combinations thereof), extreme pressure agents, antioxidants, antiwear agents, corrosion inhibitors, antifoaming agents. Agent, viscosity index improver and the like are added in appropriate combination.
[0004]
On the other hand, in the case of hydraulic oil and automatic transmission oil, which are also representative examples of lubricating oil, the required performance is similar to that in the case of engine oil, but is significantly different. For example, in the case of hydraulic oil and automatic transmission oil, demands for wear resistance, rust prevention, and oxidation prevention are high, but demands for dispersing action such as sludge are relatively low.
[0005]
In addition, hydraulic oil and automatic transmission oil may be required to have a high friction coefficient. In other words, lubricating oil is generally expected to play a role of lowering the coefficient of friction. However, hydraulic oil used for disc brakes with built-in discs for construction machinery is intended to increase the effectiveness of disc brakes. Lubricants are expected to exhibit a high coefficient of friction. In an automatic transmission, power is transmitted by connecting a plurality of clutch plates. However, if the friction coefficient applied to the clutch plate by the lubricating oil (automatic transmission fluid) used here is not sufficient, power transmission is performed. Is difficult to perform smoothly.
[0006]
As described above, for example, lubricating oil such as hydraulic oil and automatic transmission oil often needs to have a high coefficient of friction. And it is desirable that the temperature dependence of the friction coefficient (particularly, the reduction of the friction coefficient at a high temperature) is small. In other words, lubricating oils such as hydraulic fluids and automatic transmission fluids often rise in temperature during their use, and if the friction coefficient becomes low at such high temperatures, it is difficult to develop a reliable braking action or power. The stability of transmission will be reduced.
[0007]
In the case of engine oil, it is generally not required to provide a high friction coefficient as described above. However, for example, lubricating oil (diesel engine oil) for diesel engines in construction machinery is often used as mission oil or hydraulic oil in construction machinery, so diesel engine oil also has a high coefficient of friction. It is often required.
[0008]
Conventionally, as a friction coefficient modifier, higher fatty acids, higher alcohols, aliphatic amines, fatty acid amides, fatty acid esters, sulfurized fats and oils, acidic phosphate esters, acidic phosphite esters, oil-soluble organic molybdenum compounds, solid lubricants, etc. Compounds are known, but additives that give high friction coefficients to lubricating oils, especially additives that give high friction coefficients even at high temperatures, have not been known so far.
[0009]
[Problems to be solved by the invention]
An object of the present invention is to provide a lubricating oil additive composition that can be advantageously used for preparation of a lubricating oil that requires a high coefficient of friction, such as hydraulic oil and lubricating oil for an automatic transmission. In particular, an object of the present invention is to provide a lubricating oil additive composition that imparts a high coefficient of friction to lubricating oil even at high temperatures.
Another object of the present invention is to provide a lubricating oil composition useful as a working oil or a lubricating oil for an automatic transmission. In particular, the present invention is to provide a lubricating oil composition that exhibits a high coefficient of friction even at high temperatures.
[0010]
[Means for Solving the Problems]
The present inventionPolyisobutenyl succinimideA lubricating oil additive composition comprising an ashless dispersant and isophthalic acid.
The present invention also providesPolyisobutenyl succinimideThere is also a lubricating oil composition comprising an ashless dispersant and isophthalic acid dissolved in a base oil.
In the lubricating oil additive composition and lubricating oil composition of the present invention,Polyisobutenyl succinimideThe ashless dispersant and isophthalic acid are preferably in the form of a salt. Further, it is desirable that the ashless dispersant is used in an amount of 0.9 mol or more (average active ingredient equivalent) with respect to 1 mol of isophthalic acid.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
The lubricating oil additive composition of the present invention comprises:Polyisobutenyl succinimideIt contains an ashless dispersant and isophthalic acid.
Polyisobutenyl succinimideExamples of ashless dispersants include known polyisobutenyl succinimide dispersants,And modified products thereof (borides, organic acid-modified products, cyclic carbonate-modified products, etc.).
[0012]
The lubricating oil additive composition of the present invention comprises:Isophthalic acidIt is characterized by including.
[0013]
With isophthalic acidPolyisobutenyl succinimideThe ratio with the ashless dispersant is not particularly limited, but for 1 mol of isophthalic acid,Polyisobutenyl succinimideThe ashless dispersant is preferably used in such an amount that it is 0.9 mol or more (in the case of a lubricating oil additive composition, it is preferably 10 mol or less). That is, isophthalic acid itself is difficult to dissolve in mineral oils, vegetable oils, synthetic oils, etc., which are the base oils of lubricating oil compositions.Polyisobutenyl succinimideDissolution is facilitated when combined with an ashless dispersant to form a salt. Therefore, the lubricating oil additive composition of the present invention is mostly composed of isophthalic acid.Polyisobutenyl succinimideIt preferably consists of a salt with an ashless dispersant.
[0014]
As the base oil used in the lubricating oil composition of the present invention, mineral base oils that are used in the preparation of ordinary lubricating oil compositions or proposed to be used, ester base oils such as vegetable oils, Synthetic oil base oils can be used. As the mineral oil base oil, a mineral oil having a viscosity at 40 ° C. of 1 cSt to 1000 cSt (preferably 2 cSt to 50 cSt) is used. Mineral oil base oils include lubricant base oils obtained by solvent extraction, lubricant base oils obtained by hydrotreating (eg, viscosity index of 80 or more, aromatic content of 3% by weight or less, and sulfur content) Of 30 ppm or less). Examples of vegetable oil-based base oils include rapeseed oil, cottonseed oil, and castor oil. Examples of synthetic base oils include ester bases such as dibasic acid esters (eg, isodecyl adipate) and polyol esters (eg, caprylic acid ester or oleic acid ester of trimethylpropane), and polyalpha Examples include olefin base oils.
[0015]
In the lubricating oil composition of the present invention, isophthalic acid is contained in an amount in the range of 0.01 to 10% by weight, particularly 0.03 to 0.1% by weight (ratio to the total lubricating oil composition). Preferably it is. And the isophthalic acid isPolyisobutenyl succinimideIt is preferably in the form of a salt with an ashless dispersant and present in a dissolved state.
[0016]
The lubricating oil additive composition and lubricating oil composition of the present invention comprise the above isophthalic acid andPolyisobutenyl succinimideIn addition to the ashless dispersant, various lubricating oil additive components may be included. Examples of such lubricating oil additive components include the following compounds.
[0017]
Metal-containing detergents: highly basic or medium basic calcium sulfonate, calcium phenate, calcium salicylate, calcium naphthenate, barium sulfonate, barium phenate, barium phenate, barium naphthenate, magnesium sulfonate, magnesium phenate , Magnesium salicylate and so on.
Ashless dispersants other than nitrogen atom-containing ashless dispersants: polyisobutenyl succinic acid ester dispersants and modified products thereof (borides, organic acid modified products, cyclic carbonate modified products, etc.).
[0018]
Antioxidants: phenolic antioxidants, amine antioxidants, sulfur peroxide decomposers, etc.
Extreme pressure agent or antiwear agent: dialkyldithiophosphate zinc salt, dialkyldithiocarbamate molybdenum salt, sulfurized olefin, sulfide, phosphite, phosphate, amine phosphate, etc.
Corrosion inhibitors: benzotriazole, thiadiazole, N, N'-disalicylidene-1,2-aminopropane and the like.
[0019]
Friction modifiers: higher fatty acids, higher alcohols, aliphatic amines, fatty acid amides, fatty acid esters, sulfurized fats and oils, acidic phosphoric esters, acidic phosphites, oil-soluble organic molybdenum compounds, solid lubricants, and the like.
Antifoaming agent: dimethylpolysiloxane, polyacrylate, etc.
Pour point depressant: polyalkyl acrylate, polyalkyl methacrylate, polybutene, polyalkyl styrene, polyvinyl acetate and the like.
Viscosity index improvers: polyalkyl acrylates, polyalkyl methacrylates, olefin copolymers, rubber-based viscosity index improvers, and dispersible viscosity index improvers with groups imparting dispersibility to these polymers.
Other additive ingredients: rust inhibitor, demulsifier, colorant, etc.
[0020]
【Example】
[Comparative example1] A mineral base oil (viscosity: about 20 cSt at 40 ° C) and polyisobutenyl succinimide are charged into a flask, and the temperature is raised by heating. Added. After completion of the addition, stirring is further continued at about 150 ° C. for 4 hours, so that a salt containing 2 mol of polyisobutenyl succinimide and about 1 mol of phthalic acid has a concentration of 4.0% by weight in terms of the amount of phthalic acid. A lubricating oil additive composition contained in (concentration of polyisobutenyl succinimide: 50% by weight) was obtained.
[0021]
[Example1]
Except for changing phthalic acid to isophthalic acidComparative example1 to obtain a lubricating oil additive composition containing approximately equimolar salt of polyisobutenyl succinimide and isophthalic acid at a concentration of 4.0% by weight in terms of isophthalic acid .
[0022]
[Comparative Example 2]
Except changing phthalic acid to terephthalic acidComparative example1 was performed to obtain a lubricating oil additive composition containing a substantially equimolar salt of polyisobutenyl succinimide and terephthalic acid at a concentration of 4.0% by weight in terms of the amount of terephthalic acid. .
[0023]
[Reference example]
Except for changing polyisobutenyl succinimide to boronated polyisobutenyl succinimideComparative example1. The same operation as in No. 1 was carried out, but the approximately equimolar salt of boronated polyisobutenyl succinimide and phthalic acid had a concentration of 4.0% by weight in terms of phthalic acid (borated polyisobutenyl succinimide). Concentration of 60 wt%) was obtained.
[0024]
[Comparative example3]
Lubricating with dissolved polyisobutenyl succinimideoilAn additive composition (polyisobutenyl succinimide concentration: 50% by weight) was prepared.
[0025]
[Comparative example4]
Lubricated dissolved boronated polyisobutenyl succinimideoilAn additive composition (borated polyisobutenyl succinimide concentration: 60% by weight) was prepared.
[0026]
[Comparative example5]
Except for changing phthalic acid to alkenyl succinic acidComparative example1. A lubricating oil additive composition containing the substantially equimolar salt of polyisobutenyl succinimide and alkenyl succinic acid at a concentration of 3.25% by weight in terms of alkenyl succinic acid is obtained by performing the same operation as 1. It was.
[0027]
[Evaluation of friction coefficient of lubricating oil composition 1]
(1) Preparation of lubricating oil composition sample
1) A lubricating oil composition was prepared by adding the following additives to a synthetic oil base oil (polyol polyester base oil, viscosity: about 40 cSt at 40 ° C.).
Calcium phenate (0.2 wt%), calcium sulfonate (0.05 wt%), phenolic antioxidant (0.05 wt%), amine antioxidant (0.05 wt%), alkyldithiodi Azole (0.01 wt%), benzotriazole (0.01 wt%), sulfurized fat (0.01 wt%).
[0028]
2) With respect to 100 parts by weight of the above lubricating oil composition, the above-described examplesReference examplesAlternatively, 2 parts by weight of the lubricating oil additive composition obtained in the comparative example (however, 3 parts by weight in the lubricating oil composition sample 5, the lubricating oil composition sample64 parts by weight and 5 parts by weight for the lubricating oil composition sample 7) were added to prepare a lubricating oil composition sample.
[0029]
(2) Measurement of friction coefficient
Using a Komatsu Engineering micro clutch tester, the coefficient of friction was measured according to the measurement method defined in KES07.802. That is, the specified disk and plate are brought into contact with each other in the presence of lubricating oil, and the surface pressure is 4 kgf / cm.2 And the disc was rotated at 20 rpm. The test temperature was changed to room temperature (25 ° C.), 60 ° C., 80 ° C., 100 ° C., 120 ° C., and 140 ° C., and the friction coefficient was measured at each temperature.
[0030]
(3) Measurement results
It is shown in Table 1 below.
[0031]
[Table 1]
Table 1
────────────────────────────────────
Lubricating oil compositionMeasurement temperature
Sample number 25 ° C 60 ° C 80 ° C 100 ° C 120 ° C 140 ° C
────────────────────────────────────
1 (ComparisonExample 1) 0.1367 0.1477 0.1508 0.1522 0.1545 0.1544
2 (Example10.1467 0.1656 0.1690 0.1683 0.1649 0.1607
3 (Comparative Example 20.1362 0.1479 0.1527 0.1530 0.1516 0.1457
4 (Reference example0.1386 0.1527 0.1513 0.1467 0.1459 0.1440
5 (Reference example0.1392 0.1511 0.1510 0.1486 0.1409 0.1328
6 (Reference example0.1403 0.1676 0.1717 0.1686 0.1610 0.1532
7 (Reference example) 0.1426 0.1729 0.1773 0.1782 0.1766 0.1717
8 (Comparative example30.1219 0.1484 0.1270 0.1221 0.1204 0.1200
9 (Comparative example40.1205 0.1311 0.1301 0.1289 0.1267 0.1239
10 (Comparative example5) 0.1391 0.1482 0.1428 0.1374 0.1323 0.1272
────────────────────────────────────
Note: Examples corresponding to the lubricating oil additive composition used to prepare the lubricating oil composition are shown in parentheses after the sample number., Reference examples andA comparative example is shown.
[0032]
From the measurement results of Table 1 above, the lubricating oil composition of the present invention using the lubricating oil additive composition according to the present invention (Sample 2: Example 1) showed a high coefficient of friction at room temperature and a high temperature. But we can see that it maintains a high coefficient of friction. On the other hand, a lubricating oil composition containing no aromatic carboxylic acid (Comparative Example3Samples using various lubricating oil additive compositions8And comparative examples4Samples using various lubricating oil additive compositions9) Shows that the friction coefficient at room temperature is low and the low friction coefficient is maintained even at high temperature. And a lubricating oil composition using an aliphatic carboxylic acid instead of an aromatic carboxylic acid (Comparative Example)5Samples using various lubricating oil additive compositions10) Shows a high friction coefficient at room temperature, but the friction coefficient greatly decreases at high temperatures.
[0033]
[Evaluation of friction coefficient of lubricating oil composition 2]
(1) Preparation of lubricating oil composition sample
1) A lubricating oil composition was prepared in a mineral oil base oil (mineral oil base oil subjected to hydrogenation treatment, viscosity: about 30 cSt at 40 ° C.) so that the following additives were in the indicated amounts.
Zinc alkyldithiophosphate (0.3 wt%), phenolic antioxidant (0.05 wt%), zinc dinonylnaphthalene sulfonate (0.025 wt%), calcium alkylsalicylate (0.025 wt%) , Alkylphenol calcium salt (0.08% by weight), polypropylene glycol (0.03% by weight), glycerol monooleate (0.15% by weight).
[0034]
2) With respect to 100 parts by weight of the above lubricating oil composition, the above-described examples11 part by weight of the lubricating oil additive composition obtained in the above was added to prepare a lubricating oil composition sample (Sample 11). Further, only the above lubricating oil composition was used as a comparative sample (sample 12).
[0035]
(2) Measurement of friction coefficient
The coefficient of friction was measured using a micro clutch tester manufactured by Komatsu Engineering according to the measurement method specified in KES07.802. That is, the specified disk and plate are brought into contact with each other in the presence of lubricating oil, and the surface pressure is 4 kgf / cm.2 And the disc was rotated at 20 rpm. The test temperature was changed to room temperature (25 ° C.), 60 ° C., 80 ° C., 100 ° C., 120 ° C., and 140 ° C., and the friction coefficient was measured at each temperature.
[0036]
(3) Measurement results
It is shown in Table 2 below.
[0037]
[Table 2]
Table 2
────────────────────────────────────
Lubricating oil compositionMeasurement temperature
Sample number 25 ° C 60 ° C 80 ° C 100 ° C 120 ° C 140 ° C
────────────────────────────────────
11 (Example10.1248 0.1350 0.1479 0.1503 0.1472 0.1401
12 (Comparative sample) 0.1428 0.1250 0.1168 0.1064 0.0978 0.0899
────────────────────────────────────
Note: Examples corresponding to the lubricating oil additive composition used to prepare the lubricating oil composition are shown in parentheses after the sample number.
[0038]
From the measurement results in Table 2 above, the lubricating oil composition of the present invention (Sample No. 11) using the lubricating oil additive composition according to the present invention exhibits a high coefficient of friction at room temperature and high friction even at high temperatures. It can be seen that the coefficient is maintained. on the other hand,Isophthalic acidIt can be seen that the lubricating oil composition (Sample No. 12) that does not contain, has a high coefficient of friction at room temperature, but the coefficient of friction significantly decreases at high temperatures.
[0039]
Next, formulation examples of the lubricating oil composition according to the present invention will be listed. In each formulation, another additive such as an antifoaming agent is further added as necessary.
[0040]
(1) Hydraulic fluid 1
Lubricating oil additive composition of the present invention 0.01-2% by weight
Zinc alkyldithiophosphate 0.4% by weight
Phenolic antioxidant 0.05% by weight
Zinc dinonylnaphthalenesulfonate 0.025% by weight
Sorbitan monooleate 0.025% by weight
Polyalkylene polyamine fatty acid amine 0.02% by weight
Alkyl salicylic acid calcium salt 0.02% by weight
Phosphite antiwear agent 0.05% by weight
Base oil balance
[0041]
(2) Hydraulic fluid 2
Lubricating oil additive composition of the present invention 0.01-2% by weight
Zinc alkyldithiophosphate 1.0% by weight
Zinc dinonylnaphthalenesulfonate 0.05% by weight
Alkenyl succinic acid 0.1% by weight
Polyoxyalkylene alkyl ether 0.02% by weight
Base oil balance
[0042]
(3) Hydraulic fluid 3
Lubricating oil additive composition of the present invention 0.01-2% by weight
Zinc alkyldithiophosphate 0.4% by weight
Phenolic antioxidant 0.05% by weight
Zinc dinonylnaphthalenesulfonate 0.025% by weight
Alkyl salicylic acid calcium salt 0.02% by weight
Alkylphenol calcium salt 0.1% by weight
Polypropylene glycol 0.03% by weight
Polymethacrylate viscosity index improver 0.4% by weight
Base oil balance
[0043]
(4) Hydraulic fluid 4
Lubricating oil additive composition of the present invention 0.01-2% by weight
Phenolic antioxidant 0.05% by weight
Sorbitan monooleate 0.04% by weight
Polypropylene glycol 0.002% by weight
Polyoxyalkylene alkyl ether 0.001% by weight
Phosphite antiwear agent 0.5% by weight
Amine-based antioxidant 0.1% by weight
Methylbenzotriazole 0.01% by weight
Dibenzyl sulfide 0.05% by weight
Beef tallow diamine dioleate 0.015% by weight
Diisotridecyl adipate 0.6% by weight
Base oil balance
[0044]
(5) Hydraulic fluid 5
Lubricating oil additive composition of the present invention 0.01-2% by weight
Phenolic antioxidant 0.05% by weight
Alkylphenol calcium salt 0.2% by weight
Amine antioxidant 0.05% by weight
Pinene P2 SFive 0.2% by weight
Alkenyl succinimide 0.05% by weight
Imidazoline derivative 0.05% by weight
Base oil balance
[0045]
(6) Gear oil 1
Lubricating oil additive composition of the present invention 0.1-5% by weight
Alkylphenol calcium salt 1.5% by weight
Glycerol monooleate 0.3% by weight
Phosphite antiwear agent 0.65% by weight
Amine antioxidant 0.4% by weight
Methylbenzotriazole 0.03% by weight
Alkenyl succinimide 4.5 wt%
Amine phosphate 0.5% by weight
Sulfurized olefin 0.05% by weight
Base oil balance
[0046]
(7) Gear oil 2
Lubricating oil additive composition of the present invention 0.1-5% by weight
Alkylphenol calcium salt 1.0% by weight
Glycerol monooleate 0.3% by weight
Phosphite antiwear agent 0.65% by weight
Amine antioxidant 0.4% by weight
Methylbenzotriazole 0.03% by weight
Alkenyl succinimide 4.5 wt%
Dinonyl calcium sulfonate 0.5% by weight
Amine phosphate 0.5% by weight
Sulfurized olefin 0.05% by weight
Diethanol cocoamide 0.5% by weight
Base oil balance
[0047]
(8) Gear oil 3
Lubricating oil additive composition of the present invention 0.1-5% by weight
Alkylphenol calcium salt 1.0% by weight
Glycerol monooleate 0.7% by weight
Phosphite antiwear agent 0.65% by weight
Amine antioxidant 0.4% by weight
Methylbenzotriazole 0.03% by weight
Alkenyl succinimide 4.5 wt%
Dinonyl calcium sulfonate 0.5% by weight
Amine phosphate 0.5% by weight
Sulfurized olefin 0.05% by weight
Diethanol cocoamide 0.3% by weight
Polymethacrylate viscosity index improver 5.0% by weight
Base oil balance
[0048]
(9) Automatic transmission (ATF) oil 1
Lubricating oil additive composition of the present invention 0.1 to 7% by weight
Alkyl dithiophosphate 1.0% by weight
Phenolic antioxidant 0.2% by weight
Alkyl salicylic acid calcium salt 0.7% by weight
Alkylphenol calcium salt 1.0% by weight
Alkyl sulfonic acid calcium salt 1.7% by weight
Alkyl sulfonic acid magnesium salt 2.5% by weight
Amine-based antioxidant 0.1% by weight
Alkenyl succinimide 1.0% by weight
Polymethacrylate viscosity index improver 17.0% by weight
Base oil balance
[0049]
(10) Automatic transmission (ATF) oil 2
Lubricating oil additive composition of the present invention 0.1 to 7% by weight
Alkyl dithiophosphate 0.7% by weight
Polyoxyethylene alkyl allyl ether 0.08% by weight
Methylbenzotriazole 0.03% by weight
Sulfurized olefin 1.0 wt%
Potassium borate 2.0% by weight
Polymethacrylate viscosity index improver 17.0% by weight
Base oil balance
[0050]
(11) Automatic transmission (ATF) oil 3
Lubricating oil additive composition of the present invention 0.1 to 7% by weight
Alkyl dithiophosphate 0.7% by weight
Phenolic antioxidant 0.2% by weight
Alkylphenol calcium salt 0.6% by weight
Alkyl sulfonic acid calcium salt 0.2% by weight
Magnesium alkyl sulfonate 0.1% by weight
Amine-based antioxidant 0.1% by weight
Pinene P2 SFive 0.5% by weight
Potassium borate 2.0% by weight
Polymethacrylate viscosity index improver 17.0% by weight
Base oil balance
[0051]
(12) Diesel engine oil 1
Lubricating oil additive composition of the present invention 0.5-8% by weight
Alkyl dithiophosphate 1.1% by weight
Alkyl salicylic acid calcium salt 2.0% by weight
Alkylphenol calcium salt 1.7% by weight
Alkylsulfonic acid calcium salt 1.2% by weight
Polyoxyethylene alkyl allyl ether 0.1% by weight
Alkenyl succinimide 1.5% by weight
Base oil balance
[0052]
(13) Diesel engine oil 2
Lubricating oil additive composition of the present invention 0.5-8% by weight
Alkyl dithiophosphate 1.3% by weight
Phenolic antioxidant 0.2% by weight
Alkylphenol calcium salt 3.2% by weight
Alkylsulfonic acid calcium salt 2.0% by weight
Amine-based antioxidant 0.2% by weight
Alkenyl succinimide 4.0% by weight
Polymethacrylate viscosity index improver 3.0% by weight
Base oil balance
[0053]
(14) Diesel engine oil 3
Lubricating oil additive composition of the present invention 0.5-8% by weight
Alkyl dithiophosphate 1.3% by weight
Phenolic antioxidant 0.2% by weight
Alkylphenol calcium salt 3.2% by weight
Alkyl sulfonic acid calcium salt 2.0% by weight
Amine-based antioxidant 0.2% by weight
Alkenyl succinimide 4.0% by weight
Olefin copolymer viscosity index improver 6.0 wt%
Base oil balance
[0054]
(15) Diesel engine oil 4
Lubricating oil additive composition of the present invention 0.5-8% by weight
Alkyl dithiophosphate 1.6% by weight
Alkylphenol calcium salt 3.2% by weight
Alkyl sulfonic acid calcium salt 1.4% by weight
Magnesium alkyl sulfonate 0.8% by weight
Alkenyl succinimide 9.0% by weight
Olefin copolymer viscosity index improver 8.0 wt%
Base oil balance
[0055]
(16) Diesel engine oil 5
Lubricating oil additive composition of the present invention 0.5-8% by weight
Alkyl dithiophosphate 1.3% by weight
Phenolic antioxidant 0.2% by weight
Alkylphenol calcium salt 3.2% by weight
Alkylsulfonic acid calcium salt 2.0% by weight
Amine-based antioxidant 0.2% by weight
Alkenyl succinimide 4.0% by weight
Molybdenum dithiocarbamate 0.5% by weight
Polymethacrylate viscosity index improver 3.0% by weight
Base oil balance
[0056]
(17) Diesel engine oil 6
Lubricating oil additive composition of the present invention 0.5-8 wt%
Alkyl dithiophosphate 1.3% by weight
Phenolic antioxidant 0.2% by weight
Alkylphenol calcium salt 3.2% by weight
Alkyl sulfonic acid calcium salt 2.0% by weight
Amine-based antioxidant 0.2% by weight
Alkenyl succinimide 4.0% by weight
Molybdenum dithiophosphate 0.5% by weight
Polymethacrylate viscosity index improver 3.0% by weight
Base oil balance
[0057]
【The invention's effect】
The lubricating oil additive composition of the present invention is particularly suitable for addition to hydraulic oils, gear oils, automatic transmission oils and the like because it provides a sufficient coefficient of friction to the lubricating oil. Further, it is suitable for use in a lubricating oil that is used both as a diesel engine oil and a working oil in combination with a known detergent dispersant, extreme pressure agent (antiwear agent), and the like. Therefore, it is useful as a lubricating hydraulic oil, gear oil, automatic transmission oil, and the like of the present invention, and diesel engine oil is further added by adding a known cleaning dispersant, extreme pressure agent (antiwear agent), and the like. It becomes a lubricating oil suitable for a wide range of uses as a lubricating oil that combines oil and hydraulic oil.
Claims (11)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01810998A JP3980146B2 (en) | 1998-01-13 | 1998-01-13 | Lubricating oil additive composition and lubricating oil composition |
| CA002280238A CA2280238A1 (en) | 1998-01-13 | 1999-08-13 | Lubricating oil additive composition having a high friction coefficient at elevated temperatures |
| EP99306421A EP1077249A1 (en) | 1998-01-13 | 1999-08-16 | Lubricating oil additive composition having a high friction coefficient at elevated temperatures |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01810998A JP3980146B2 (en) | 1998-01-13 | 1998-01-13 | Lubricating oil additive composition and lubricating oil composition |
| CA002280238A CA2280238A1 (en) | 1998-01-13 | 1999-08-13 | Lubricating oil additive composition having a high friction coefficient at elevated temperatures |
| EP99306421A EP1077249A1 (en) | 1998-01-13 | 1999-08-16 | Lubricating oil additive composition having a high friction coefficient at elevated temperatures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11199888A JPH11199888A (en) | 1999-07-27 |
| JP3980146B2 true JP3980146B2 (en) | 2007-09-26 |
Family
ID=27171008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01810998A Expired - Fee Related JP3980146B2 (en) | 1998-01-13 | 1998-01-13 | Lubricating oil additive composition and lubricating oil composition |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1077249A1 (en) |
| JP (1) | JP3980146B2 (en) |
| CA (1) | CA2280238A1 (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4673487B2 (en) * | 2001-02-02 | 2011-04-20 | Ｊｘ日鉱日石エネルギー株式会社 | Lubricating oil composition for metal belt type continuously variable transmission |
| US7429554B2 (en) * | 2004-01-07 | 2008-09-30 | The Lubrizol Corporation | Automatic transmission fluids with phthalic acid corrosion inhibitor |
| JP5276327B2 (en) * | 2005-02-18 | 2013-08-28 | ザ ルブリゾル コーポレイション | Multifunctional dispersant |
| US8183187B2 (en) | 2005-02-18 | 2012-05-22 | The Lubrizol Corporation | Lubricant additive formulation containing multifunctional dispersant |
| US7981846B2 (en) * | 2005-11-30 | 2011-07-19 | Chevron Oronite Company Llc | Lubricating oil composition with improved emission compatibility |
| BRPI0715371B1 (en) * | 2006-07-27 | 2017-02-14 | Lubrizol Corp | multi-dispersant lubricant composition and lubrication method of a mechanical device |
| EP2109659B1 (en) * | 2007-01-30 | 2019-06-12 | The Lubrizol Corporation | Dispersant combination for improved transmission fluids |
| US20090192063A1 (en) * | 2008-01-25 | 2009-07-30 | Afton Chemical Corporation | Final Drive and Powershift Transmission Lubricants |
| US8933247B2 (en) | 2010-03-30 | 2015-01-13 | Jx Nippon Oil & Energy Corporation | Succinimide compound, lubricating oil additive, and lubricating oil composition |
| JP5476192B2 (en) * | 2010-04-05 | 2014-04-23 | Ｊｘ日鉱日石エネルギー株式会社 | Succinimide compound, lubricating oil additive and lubricating oil composition |
| JP5546316B2 (en) * | 2010-03-30 | 2014-07-09 | Ｊｘ日鉱日石エネルギー株式会社 | Succinimide compound, lubricating oil additive and lubricating oil composition |
| US20140187455A1 (en) * | 2012-12-28 | 2014-07-03 | Chevron Oronite LLC | Ultra-low saps lubricants for internal combustion engines |
| JP5947745B2 (en) * | 2013-05-10 | 2016-07-06 | コスモ石油ルブリカンツ株式会社 | Hydraulic fluid composition for construction machinery |
| CN109233953B (en) * | 2018-09-27 | 2021-07-06 | 虎牌石油（中国）有限公司 | Flame-resistant degradation environment-friendly hydraulic oil |
| CN115678641B (en) * | 2022-01-28 | 2024-02-02 | 浙江丽境环保科技工程有限公司 | Composition for improving performance of automobile engine and application method thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1024636A (en) * | 1962-08-30 | 1966-03-30 | Unilever Ltd | Margarine |
| US3374174A (en) * | 1966-04-12 | 1968-03-19 | Lubrizol Corp | Composition |
| US3692681A (en) * | 1968-08-02 | 1972-09-19 | Chevron Res | Dispersion of terephthalic acid in detergent containing hydrocarbon oil medium |
| JPS51130409A (en) * | 1975-05-08 | 1976-11-12 | Karonaito Kagaku Kk | Lubricating oil composition |
| US4940552A (en) * | 1981-03-20 | 1990-07-10 | Amoco Corporation | Passivation of polyamine dispersants toward fluorohydrocarbon compositions |
| US4548724A (en) * | 1984-05-29 | 1985-10-22 | Texaco Inc. | Succinimide derivatives as additives in lubricating oils |
| FR2586255B1 (en) * | 1985-08-14 | 1988-04-08 | Inst Francais Du Petrole | IMPROVED COMPOSITIONS OF DISPERSING ADDITIVES FOR LUBRICATING OILS AND THEIR PREPARATION |
| US5334321A (en) * | 1993-03-09 | 1994-08-02 | Chevron Research And Technology Company, A Division Of Chevron U.S.A. Inc. | Modified high molecular weight succinimides |
-
1998
- 1998-01-13 JP JP01810998A patent/JP3980146B2/en not_active Expired - Fee Related
-
1999
- 1999-08-13 CA CA002280238A patent/CA2280238A1/en not_active Abandoned
- 1999-08-16 EP EP99306421A patent/EP1077249A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| CA2280238A1 (en) | 2001-02-13 |
| EP1077249A1 (en) | 2001-02-21 |
| JPH11199888A (en) | 1999-07-27 |
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