发明名称 |
Use of an additive for improving the cold flow properties of a petroleum oil, petroleum compositions containing this additive and masterbatches containing this additive. |
摘要 |
Copolymers of ethylene with vinyl acetate for which the expression VA/6 + B/2.3 - log (MFI) is less than 6.2 are used as a cold-flow improver especially in crude oils. (In the expression B represents methyl groups per 1000 C-atoms as measured by defined nmr method and VA represents % weight of vinyl acetate). Wax containing petroleum oil composition containing such a copolymer and a master batch for forming this composition.
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申请公布号 |
EP0021607(A1) |
申请公布日期 |
1981.01.07 |
申请号 |
EP19800301726 |
申请日期 |
1980.05.23 |
申请人 |
IMPERIAL CHEMICAL INDUSTRIES PLC |
发明人 |
GILBY, GORDON WILLIAM |
分类号 |
C10L1/192;C08F210/02;C09K8/524;C10L1/195;C10L1/197;C10L10/14;(IPC1-7):C10L1/18;C10M1/28;E21B43/25 |
主分类号 |
C10L1/192 |
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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