发明名称 |
LUBRICATING OIL ADDITIVES |
摘要 |
A process for producing a dispersant/VI improver for use in finished lubricating oil compositions comprises reacting in a normally liquid substantially inert organic solvent (a) a copolymer of an olefin and a monomer having the structure (I), wherein X and X<1> are the same or different provided that at least one of X and X<1> is such that the copolymer can function as carboxylic acylating agent, (b) a succinimide, and (c) a primary or secondary amine or a mixture thereof. Preferred copolymers comprise maleic anhydride as a comonomer. In a preferred embodiment of the invention, the amine is a monoamine, and a polyamine is also added; the monoamine and polyamine are added to the reaction medium prior to addition of the succinimide. |
申请公布号 |
WO9004628(A1) |
申请公布日期 |
1990.05.03 |
申请号 |
WO1989GB01225 |
申请日期 |
1989.10.17 |
申请人 |
BP CHEMICALS (ADDITIVES) LIMITED |
发明人 |
COOK, STEPHEN, JAMES;O'CONNOR, SEAN, PATRICK |
分类号 |
C10M159/12;C10N30/02;C10N30/04;C10N40/25;(IPC1-7):C10M149/06 |
主分类号 |
C10M159/12 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|