| 发明名称 |
PROCESS FOR THE MANUFACTURE OF WATER-SOLUBLE HYDROLYSIS PRODUCTS OF POLYACRYLONITRILE, AND USE THEREOF AS DRILLING FLUIDS |
| 摘要 |
A process for the production of water-soluble hydrolyzed polyacrylonitrile polymers, wherein the acrylonitrile is polymerized in the presence of 1-8% by weight of hydrolyzed polyacrylonitrile and hydrolyzed without intermediate isolation from the reaction mixture. |
| 申请公布号 |
EP0047381(B1) |
申请公布日期 |
1984.03.14 |
| 申请号 |
EP19810105677 |
申请日期 |
1981.07.20 |
| 申请人 |
WOLFF WALSRODE AKTIENGESELLSCHAFT |
发明人 |
HUHN, HELMUT, DR.;KARSTENS, WERNER, ING. GRAD.;HOPPE, LUTZ, DR. |
| 分类号 |
C08F8/00;C08F2/18;C08F2/20;C08F8/12;(IPC1-7):08F8/12;21B21/00;08F20/44 |
主分类号 |
C08F8/00 |
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