发明名称 |
PROCESS FOR THE REDUCTION OF THE MOLECULAR WEIGTH OF WATER SOLUBLE POLYACRYLIC ACID OR ITS DERIVATIVES |
摘要 |
1. A process for reducing the molecular weight of water-soluble polyacrylic acid or salts thereof except for poly alpha-hydroxyacrylic acid salts, polyacrylamide or polyacrylonitrile hydrolyzates, characterized in that an aqueous polymer solution having a pH value of 4 to 9 is treated with 0.01 to 20% by weight, based on the polymer, of hydrogen peroxide at 20 to 100 degrees C. |
申请公布号 |
EP0175116(B1) |
申请公布日期 |
1990.01.03 |
申请号 |
EP19850109807 |
申请日期 |
1985.08.05 |
申请人 |
WOLFF WALSRODE AKTIENGESELLSCHAFT |
发明人 |
HUHN, HELMUT, DR.;KARSTENS, WERNER |
分类号 |
C08F8/00;C08F8/50 |
主分类号 |
C08F8/00 |
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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