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

US10343980B2 · kind B2 · utility

Assignee

• Evonik Röhm GmbH · DE

Inventors

• Steffen Krill · Mühltal, DE
• Patrik Hartmann · Büttelborn, DE

Key dates

• Filing date: Jun 16, 2017
• Grant date: Jul 9, 2019
• Expiry date: Jun 16, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C233/38
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

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.