发明申请
US20110263796A1 PROCESS FOR PREPARING ACRYLAMIDE COPOLYMERS BY HOFMANN DEGRADATION REACTION
有权
通过HOFMANN降解反应制备丙烯酰胺共聚物的方法
- 专利标题： PROCESS FOR PREPARING ACRYLAMIDE COPOLYMERS BY HOFMANN DEGRADATION REACTION
- 专利标题（中）： 通过HOFMANN降解反应制备丙烯酰胺共聚物的方法
-
申请号： US13124672申请日： 2009-03-18
-
公开(公告)号： US20110263796A1公开(公告)日： 2011-10-27
- 发明人: René Hund , Christophe Auriant
- 申请人： René Hund , Christophe Auriant
- 申请人地址： FR Andrezieux Boutheon
- 专利权人： S.P.C.M. SA
- 当前专利权人： S.P.C.M. SA
- 当前专利权人地址： FR Andrezieux Boutheon
- 优先权： FR0858037 20081127
- 国际申请： PCT/FR2009/050456 WO 20090318
- 主分类号： C08F8/00
- IPC分类号： C08F8/00
摘要：
In a process for preparing cationic or amphoteric (co)polymers derived from acrylamide by a Hofmann degradation reaction in aqueous solution in the presence of an alkali and/or alkaline-earth metal hydroxide and an alkali metal hypohalide on a base copolymer, a solution of base copolymer on which the reaction is performed contains a polyvalent cationic salt representing at least 0.5% by weight, preferably from 2 to 10% by weight of the base copolymer.
公开/授权文献
信息查询
