Preparation of N-vinyl carboxamides in a series of reactor units

US10479851B2 · kind B2 · utility

Assignee

• BASE SE · DE

Inventors

• Christiane Lange · Stuttgart, DE
• Hugo Vale · Schifferstadt, DE
• Hans-Joachim Haehnle · Neustadt, DE
• Oliver Soetje · Mannheim, DE

Key dates

• Filing date: Jul 19, 2016
• Grant date: Nov 19, 2019
• Expiry date: Aug 2, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F26/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Disclosed herein is a process for producing polymers of an N-vinyl carboxamide, including the steps of flowing a reaction mixture containing an aqueous liquid containing at least one polymerization initiator, N-vinyl carboxamide monomer or a monomer mixture containing N-vinyl carboxamide into a reactor system, and polymerizing the monomer or monomer mixture to produce the polymer of a N-vinyl carboxamide. The polymers resulting therefrom may be hydrolyzed to provide polymers containing vinyl amine units. Also disclosed herein is an apparatus suitable for producing the polymers.