发明名称 |
Water soluble, powdered, cationic polyelectrolyte comprising a copolymer of acrylamide and dimethylaminopropylacrylamide essentially free of bifunctional compounds |
摘要 |
A water-soluble, powdered, cationic polyelectrolyte comprising a copolymer of acrylamide and dimethylaminopropylacrylamide which is essentially free of bifunctional compounds and in whicha) the dimethylaminopropylacrylamide is quaternized;b) the quotient of the intrinsic viscosity of the copolymers divided by the molar ratio of acrylamide to dimethylaminopropylacrylamide is greater than 200; andc) the proportion of the cationic monomers in the polymer is between 4 and 80 mol-%,the copolymer having been obtained by copolymerization of acrylamide and quaternized dimethylaminopropylacrylamide said quaternized dimethylaminopropylacrylamide having been obtained by the reaction of dimethylaminopropylacrylamide with a quaternizing agent in the absence of acrylamide.
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申请公布号 |
US6228964(B1) |
申请公布日期 |
2001.05.08 |
申请号 |
US19970863999 |
申请日期 |
1997.05.27 |
申请人 |
CHEMISCHE FABRIK STOCKHAUSEN GMBH |
发明人 |
HARTAN HANS-GEORG;LANDSCHEIDT ALFONS |
分类号 |
C02F11/14;B01D21/01;C02F1/54;C02F1/56;C08F8/44;C08F20/52;C08F220/56;C08F220/60;(IPC1-7):C08F220/60 |
主分类号 |
C02F11/14 |
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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