发明名称 SUCCINIMIDE DERIVATIVES OF A COPOLYMER OF ETHYLENE AND ALPHA-OLEFIN
摘要 Succinimide derivatives of copolymers of ethylene and an alpha-olefin, such as ethylene-propylene copolymer, are useful as shear stable viscosity index (VI) improvers and dispersants in lubricating oils. Especially useful is the N-(3-dimethylaminopropyl) succinimide of the copolymer of ethylene and an alpha-olefin, such as ethylene-propylene copolymer. This succinimide is obtained by reacting ethylene-propylene copolymer in a solvent, such as chlorobenzene, with maleic anhydride and a peroxide, such as dicumylperoxide. The resulting succinic anhydride is then reacted with 3-dimethylaminopropylamine to produce the resulting dimethylaminopropyl succinimide derivatives of the ethylene-propylene copolymer. The succinimide derivatives of this invention are advantageously incorporated in minor amounts, such as in the range 0.05-10% by weight based on the overall composition, in lubricating oils, such as petroleum based automotive lubricating oils, to improve the physical properties thereof. For example, the succinimide derivatives of this invention, when added to petroleum based lubricating oils, act as shear stable VI improvers and dispersants.
申请公布号 ZA7706945(B) 申请公布日期 1979.03.28
申请号 ZA19770006945 申请日期 1977.11.21
申请人 TEXACO DEV CORP 发明人 SPIVACK J;FOX N;WALDBILLIG J;RUBIN I
分类号 C08F8/00;C08F8/32;C08F255/04;C10M133/56;C10N30/00;C10N30/02;C10N30/04;C10N40/00 主分类号 C08F8/00
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