发明名称 |
MULTIFUNCTIONAL VISCOSITY INDEX IMPROVER |
摘要 |
Oleaginous compositions, particularly lubricating oil compositions, exhibiting improved low temperature viscometric properties containing a viscosity index improving amount of a V.I.-dispersant comprised of the reaction products of: (a) an oil soluble ethylene copolymer comprising from about 15 to 90 wt. % ethylene and from about 10 to 85 wt. % of at least one C3 to C28 alpha-olefin, having a number average molecular weight of from about 5,000 to 500,000, grafted with an ethylenically unsaturated carboxylic acid material having 1 or 2 acid or anhydride moieties; (b) an organic polyamine having at least two primary amino groups or a polyol; and (c) an amount effective to provide a V.I. improver-dispersant exhibiting improved low temperature viscometric properties of high functionality long chain hydrocarbyl substituted dicarboxylic acid material having a functionality of at least 1.2.
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申请公布号 |
CA1339787(C) |
申请公布日期 |
1998.03.31 |
申请号 |
CA19890605185 |
申请日期 |
1989.07.10 |
申请人 |
EXXON CHEMICAL PATENTS INC. |
发明人 |
CHUNG, DAVID YEN-LUNG;JOHNSTON, JOHN ERIC |
分类号 |
C10M159/12;C08F255/00;C08F255/04;C09K3/00;C10L1/196;C10L1/236;C10M143/02;C10M145/10;C10M149/06;C10N30/02;(IPC1-7):C10M159/12;C10M145/16;C08F8/32;C08F8/46 |
主分类号 |
C10M159/12 |
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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