发明名称 |
Methacrylate pour point depressants and compositions |
摘要 |
A pour point depressant for lubricating oils comprises a poly(methacrylate) polymer having the repeating unit <IMAGE> wherein R is an alkyl group having an average chain length in the polymer of 12.6 to 13.8, and n is an integer indicating the number of repeating units, the value of n being sufficient to provide a molecular weight of 10,000 to 300,000 for the polymer, the pour point depressant having the capacity to reduce the stable pour point to -35 DEG C., while being compatible with other additives such as viscosity index improvers and detergents.
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申请公布号 |
US4956111(A) |
申请公布日期 |
1990.09.11 |
申请号 |
US19890301397 |
申请日期 |
1989.01.25 |
申请人 |
PENNZOIL PRODUCTS COMPANY |
发明人 |
WILBURN, BRUCE E.;HEILMAN, WILLIAM J. |
分类号 |
C10M145/14;C10M157/00;C10M167/00 |
主分类号 |
C10M145/14 |
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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