发明名称 |
Block copolymers of dienes, vinylarenes, and alkylmethacrylates as modified viscosity index improvers |
摘要 |
Polymers comprising blocks of a hydrogenated conjugated diene (B), a vinylarene (A), and an alkyl methacrylate (M), are readily prepared as a mixture of molecules having the structures B-A-M and B-A-M-A-B wherein both structures are effective as viscosity index improvers for oil compositions. Reaction of the polymers with a primary or secondary amine results in a dispersant viscosity index improver.
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申请公布号 |
US5272211(A) |
申请公布日期 |
1993.12.21 |
申请号 |
US19920993739 |
申请日期 |
1992.12.21 |
申请人 |
SHELL OIL COMPANY |
发明人 |
SUTHERLAND, ROBERT J.;DUBOIS, DONN A. |
分类号 |
C08F8/04;C08F8/32;C08F297/04;C08L53/00;C10M145/14;C10M149/06;C10M157/00;C10M157/04;C10M169/02;C10N20/04;C10N30/02;C10N40/04;C10N40/08;C10N40/20;(IPC1-7):C08F297/02;C10M149/00 |
主分类号 |
C08F8/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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