发明名称 |
Production of high molecular weight vinyl lactam polymers and copolymers |
摘要 |
Water-soluble polymers comprising an N-vinyl lactam are found to be useful in processes wherein the polymer is introduced into a subterranean wellbore. Polymers useful in the recovery of natural resources are prepared by polymerizing an N-vinyl lactam by free radical initiation, with polymerization conducted in an aqueous solution polymerization medium preferably containing a mixture of dissolved electrolytes, or in a polymerization medium consisting essentially of a tertiary alkanol. Copolymers of such N-vinyl lactams with unsaturated amides, and terpolymers prepared by polymerizing an N-vinyl lactam and an unsaturated amide with a selected termonomer compound are also useful when prepared by these methods.
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申请公布号 |
US4644020(A) |
申请公布日期 |
1987.02.17 |
申请号 |
US19830461707 |
申请日期 |
1983.01.28 |
申请人 |
PHILLIPS PETROLEUM COMPANY |
发明人 |
STAHL, G. ALLAN |
分类号 |
C08F4/04;C08F226/06;C09K8/24;C09K8/588;C09K8/592;C09K8/62;E21B43/24;(IPC1-7):C08F4/04;C08F4/08;C08F26/10;C09K7/00 |
主分类号 |
C08F4/04 |
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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