申请人:The Lubrizol Corporation
公开号:EP0730021A1
公开(公告)日:1996-09-04
A composition of matter suitable for use as a dispersant-viscosity improver for lubricating oil compositions comprises the reaction product of reactants comprising
(a) an oil soluble, substantially hydrogenated, vinyl substituted aromatic-aliphatic conjugated diene block copolymer said copolymer having a number average molecular weight ranging from about 30,000 to about 300,000, grafted with an ethylenically unsaturated carboxylic acid or functional derivative thereof;
(b-1) at least one polyester containing at least one condensable hydroxyl group; and
(b-2) at least one polyamine having at least one condensable primary or secondary amino group, and optionally,
(c) at least one hydrocarbyl substituted carboxylic acid or anhydride.
一种适合用作润滑油组合物的分散剂-粘度改进剂的物质组合物包括反应物的反应产物,其中反应物包括
(a) 一种油溶性、基本氢化、乙烯基取代的芳香族-脂肪族共轭二烯嵌段共聚物,所述共聚物的平均分子量在约 30,000 至约 300,000 之间,与乙烯基不饱和羧酸或其官能衍生物接枝;
(b-1) 至少一种含有至少一个可缩合羟基的聚酯;及
(b-2) 至少一种聚胺,含有至少一个可缩合的伯氨基或仲氨基,可选、
(c) 至少一种烃基取代的羧酸或酸酐。