发明名称 |
Preparation of a polyvinylpyrrolidone by heat treatment of an aqueous solution of a conventional polyvinylpyrrolidone |
摘要 |
A process for the preparation of high-viscosity polyvinylpyrrolidone, wherein an aqueous polyvinylpyrrolidone solution is subjected to a heat treatment in the presence of a water-insoluble peroxide and in the absence of oxygen, and thickeners containing the polyvinylpyrrolidone thus prepared.
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申请公布号 |
US4330451(A) |
申请公布日期 |
1982.05.18 |
申请号 |
US19800197022 |
申请日期 |
1980.10.16 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
STRAUB, FERDINAND;HARTMANN, HEINRICH;NAEGELE, PAUL;SEIB, KARL |
分类号 |
C08F26/00;C08F8/00;C08F26/10;C08J3/05;C08L39/00;(IPC1-7):C08L39/06 |
主分类号 |
C08F26/00 |
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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