Preparation of N,N-(di)alkylaminoalkyl(meth)acrylamide or N,N-(di)alkylaminoalkyl (meth)acrylate and the quaternary ammonium salts thereof as flocculating aids and gelling agents
申请人:Evonik Roehm GmbH
公开号:US10343980B2
公开(公告)日:2019-07-09
N,N-(di)alkylaminoalkyl(meth)acrylamide or N,N-(di)alkylaminoalkyl (meth)acrylate and/or a quaternary ammonium salt thereof are prepared with a low content of a compound of formula (IV)
wherein R5 in each case is a linear, branched or cyclic alkyl radical, an aryl radical which may also be substituted by one or more alkyl groups, the linear, cyclic or branched alkyl radical may have a length of 1-12 carbon atoms and is, for example, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert-butyl, pentyl, hexyl, heptyl, octyl, isooctyl, nonyl, decyl, undecyl, dodecyl.
用低含量的式 (IV) 化合物制备 N,N-(二)烷基氨基烷基(甲基)丙烯酰胺或 N,N-(二)烷基氨基烷基(甲基)丙烯酸酯和/或其季铵盐
其中 R5 在每种情况下均为直链、支链或环状烷基,也可以是被一个或多个烷基取代的芳基,直链、环状或支链烷基的长度为 1-12 个碳原子,例如为甲基、乙基、丙基、异丙基、丁基、异丁基、叔丁基、戊基、己基、庚基、辛基、异辛基、壬基、癸基、十一烷基、十二烷基。