发明授权
US5252238A Multifunctional viscosity index improver derived from amido-amine
exhibiting improved low temperature viscometric properties
失效
衍生自酰胺 - 胺的多功能粘度指数改进剂具有改善的低温粘度特性
- 专利标题： Multifunctional viscosity index improver derived from amido-amine exhibiting improved low temperature viscometric properties
- 专利标题（中）： 衍生自酰胺 - 胺的多功能粘度指数改进剂具有改善的低温粘度特性
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申请号： US722624申请日： 1991-06-27
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公开(公告)号： US5252238A公开(公告)日： 1993-10-12
- 发明人: David Y. Chung , Antonio Gutierrez , John E. Johnston , Mark J. Struglinski , Robert D. Lundberg
- 申请人： David Y. Chung , Antonio Gutierrez , John E. Johnston , Mark J. Struglinski , Robert D. Lundberg
- 申请人地址： NJ Linden
- 专利权人： Exxon Chemical Patents Inc.
- 当前专利权人： Exxon Chemical Patents Inc.
- 当前专利权人地址： NJ Linden
- 主分类号： C08F8/30
- IPC分类号： C08F8/30 ; C08F8/34 ; C08F255/04 ; C10L1/22 ; C10L1/24 ; C10M143/02 ; C10M149/06 ; C10M151/02 ; C10M159/12
摘要：
The present invention is directed to a viscosity index improver for lubricating oil compositions comprising the reaction product of A) a copolymer of ethylene and at least one other alpha-olefin monomer, said copolymer grafted with ethylenically monounsaturated carboxylic acid material and B) amido-amine or thioamido-amine comprising the reaction product of a polyamine and alpha, beta-unsaturated compound of the formula ##STR1## wherein X is oxygen or sulfur, Y is OR.sup.4, --SR.sup.4 or ##STR2## and R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are independently selected from hydrogen, hydrocarbyl and substituted hydrocarbyl.
公开/授权文献
- US4639680A Digital phase and frequency detector 公开/授权日：1987-01-27
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