公开(公告)号：US06187884B1

公开(公告)日：2001-02-13

申请号：US09104174

申请日：1998-06-25

申请人： Stephan Kothrade ,  Rainer Blankenburg ,  Iris Peters ,  Axel Sanner

发明人： Stephan Kothrade ,  Rainer Blankenburg ,  Iris Peters ,  Axel Sanner

IPC分类号： C08F238

CPC分类号： C08F126/10

摘要： A process for preparing highly concentrated aqueous solutions of low molecular mass homopolymers of N-vinylpyrrolidone by free-radical solution polymerization in an aqueous medium with H2O2 as initiator comprises carrying out the polymerization in the presence of from 0.1 to 30% by weight, based on N-vinylpyrrolidone, of a polymerization regulator which is selected from the group consisting of C1-C6-alkanols, hydroxylamine salts and water-soluble compounds containing sulfur in bonded form.

摘要翻译： 通过在具有H 2 O 2作为引发剂的水性介质中通过自由基溶液聚合制备N-乙烯基吡咯烷酮的低分子质量均聚物的高浓度水溶液的方法包括在0.1-30重量％的存在下进行聚合，基于 聚合调节剂的N-乙烯基吡咯烷酮，其选自C1-C6-链烷醇，羟胺盐和含有键合形式的硫的水溶性化合物。