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1. 发明授权

US06369180B1 Process for making water soluble polyvinylcaprolactam polymers 有权
标题翻译：制备水溶性聚己内酰胺聚合物的方法
公开(公告)号：US06369180B1
公开(公告)日：2002-04-09
申请号：US09642545
申请日：2000-08-18
申请人： Jenn S. Shih , Donald I. Prettypaul , John Mc Kittrick , David E. Graham
发明人： Jenn S. Shih , Donald I. Prettypaul , John Mc Kittrick , David E. Graham
IPC分类号： C08J2608
CPC分类号： C08F26/06 , C08F220/60
摘要： A process of making a homopolymer of vinyl caprolactam (VCL), and a copolymer with dimethylaminopropyl methacrylamide (DMAPMA), optionally including with one or more polymerizable monomers (X), in the composition range, by weight, VCL 99 to 30%, DMAPMA 1-70% and monomer X 0-30%, respectively, by suspension polymerization in an aqueous/alcoholic solvent medium, without requiring a protective colloid, which comprises charging vinyl caprolactam in an aqueous/alcoholic solvent mixture, wherein the weight ratio of alcohol to total monomers is ⅙ to 3, and if present, forming a solution of DMAPMA and optional monomers in water, feeding the solution into the VCL charge at a predetermined rate, periodically adding initiator to the reaction mixture, and polymerizing at about 40° to 130° C., and, if desired, neutralizing the product, to form a polymer product at about 5% to 40% solids, homogeneously dispersed in the solvent.
摘要翻译：一种制备乙烯基己内酰胺（VCL）均聚物的方法，以及任选地包含一种或多种可聚合单体（X）的二甲基氨基丙基甲基丙烯酰胺（DMAPMA）的共聚物，其组成范围为VCL 99至30％，DMAPMA 1-70％和单体X 0-30％，通过在水/醇溶剂介质中的悬浮聚合，不需要保护胶体，其包括在乙醇/醇溶剂混合物中加入乙烯基己内酰胺，其中醇的重量比至总单体为⅙至3，如果存在，则在水中形成DMAPMA和任选单体的溶液，以预定的速率将溶液进料到VCL装料中，周期性地向反应混合物中加入引发剂，并在约40° 130℃，如果需要，中和产物，形成约5％至40％固体的均匀分散在溶剂中的聚合物产物。

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