首页>
外国专利>
New ethylene alpha-olefin polymer useful as a multifunctional viscosity index improver for oily compositions. A substituted Mannich base
New ethylene alpha-olefin polymer useful as a multifunctional viscosity index improver for oily compositions. A substituted Mannich base
展开▼
机译:新型乙烯α-烯烃聚合物可用作油性组合物的多功能粘度指数改进剂。取代的曼尼希碱
展开▼
页面导航
摘要
著录项
相似文献
摘要
The present invention is directed to oil-soluble lubricating oil additives comprising Mannich Base condensates of an alkyl substituted hydroxy aromatic compound with formaldehyde and an amine, wherein the alkyl-moiety of the aromatic compounds is derived from at least one ethylene alpha-olefin copolymer of greater or above 20,000 to about 500,000 number average molecular weight, wherein at least about 30% of the polymer's chains contain terminal ethenylidene unsaturation. The Mannich Base condensates of this invention are useful as multifunctional viscosity index improvers for oleaginous compositions, particularly lubricating oil compositions.
展开▼