Isocyanate-free synthesis of carbonate-modified polymers

US10202488B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Christina Cron · Velbert, DE
• Gabriele Brenner · Schneverdingen, DE

Key dates

• Filing date: Feb 1, 2016
• Grant date: Feb 12, 2019
• Expiry date: Feb 1, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G71/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to an isocyanate-free and preferably solvent-free process for preparing polymers containing five-membered cyclic carbonate groups. In particular, the present invention is directed to a process for preparing polymers bearing cyclic carbonate groups by reacting carboxyl-bearing polymers selected from the group including polyesters based on di- or polyols and di- or polycarboxylic acids or derivatives thereof or poly(meth)acrylates, with hydroxyl-functionalized five-membered cyclic carbonates, without addition of isocyanates.