Cross-linking of polyether carbonate polyols containing double-bonds, by adding mercapto-compounds

US9708446B2 · kind B2 · utility

Assignee

• Covestro Deutschland AG · DE

Inventors

• Thomas Ernst Müller · Aachen, DE
• Christoph Gürtler · Cologne, DE
• Muhammad Afzal Subhani · Aachen, DE
• Burkhard Kohler · Leverkusen, DE
• Walter Leitner · Aachen, DE

Key dates

• Filing date: Aug 25, 2014
• Grant date: Jul 18, 2017
• Expiry date: Aug 25, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09J169/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for preparing mercapto-crosslinked polyethercarbonate and sees polyethercarbonate polyols containing double bonds being reacted with polyfunctional mercaptans and/or sulfur with the involvement of initiator compounds.