申请人:TEXACO DEVELOPMENT CORPORATION
公开号:EP0199453A2
公开(公告)日:1986-10-29
Polymers having useful preparties as oil additives are obtained by incorporating additional functional monomer units into oil-soluble backbene polymers having linear carbon chains, especially ethylene-propylene copolymers and ethylene-propylene-diene tempolymers.
The first functional monomers have at least one nitrogen, sulphur and/or oxygen atom in a heterocyclic ring. preferably phenothiazine or the reaction product of phenothiazine and allyl glycidyl ether.
Optionally a second amine polymer (preferably N-vinylpyrrolidone) can be grafted on to the backbone polymer.
The polymers of the invention consitute dispersant, anti-oxidant, viscosity index improvers for lubricating oils, while the polymers containing both types of monomer unit are also useful as dispersant additives for fuel oils.
通过在具有线性碳链的油溶性骨架聚合物(尤其是乙烯-丙烯共聚物和乙烯-丙烯-二烯三元共聚物)中加入额外的功能性单体单元,可获得可用作油添加剂的聚合物。
第一官能团单体在杂环上至少有一个氮、硫和/或氧原子,最好是吩噻嗪或吩噻嗪与烯丙基缩水甘油醚的反应产物。
可选择在骨架聚合物上接枝第二胺聚合物(最好是 N-乙烯基吡咯烷酮)。
本发明的聚合物可用作润滑油的分散剂、抗氧化剂和粘度指数改进剂,而含有两种单体单元的聚合物还可用作燃料油的分散剂添加剂。