发明名称 |
WEAR CONTROL WITH DISPERSANTS EMPLOYING POLY ALPHA-OLEFIN POLYMERS |
摘要 |
A lubricating oil composition comprising oil, and an additive combination comprising a poly alpha-olefin polymer dispersant with a number average molecular weight above 2500, and a metal dihydrocarbyl dithiophosphate sufficient to yield a phosphorous content of up to 0.1 percent weight based on the total weight of the oil. The poly alpha-olefin polymer can be ethylene alpha-olefin copolymer such as ethylene-1-butene or ethylene-1-butene-hydrocarbyl polyamine. Preferably, the ethylene-1-butene-hydrocarbyl polyamine has a number average molecular weight of about 3300.
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申请公布号 |
CA2310086(A1) |
申请公布日期 |
1999.05.20 |
申请号 |
CA19982310086 |
申请日期 |
1998.10.20 |
申请人 |
EXXON CHEMICAL PATENTS, INC. |
发明人 |
BOFFA, ALEXANDER B.;BIDWELL, THOMAS R. |
分类号 |
C10M143/00;C10M137/10;C10M141/10;C10N10/04;C10N30/04;C10N40/25;(IPC1-7):C10M161/00 |
主分类号 |
C10M143/00 |
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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