Radical crosslinking of polyether carbonate polyols that have electron-poor and electron-rich double bonds

US10179835B2 · 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: Sep 2, 2014
• Grant date: Jan 15, 2019
• Expiry date: Mar 11, 2035

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 method for producing polyether carbonate polyols, the polyether carbonate polyols having electron-poor and electron-rich double bonds, said method preferably comprising the steps of (a) providing a suspending agent and/or an H-functional starter compound and a DMC catalyst, 03) adding at least one epoxide and (y) adding carbon dioxide, an epoxide that does not contain an unsaturated group, and at least two unsaturated compounds, the unsaturated compounds in method step (y) being selected from the group comprising unsaturated epoxides and unsaturated cyclic anhydrides, and one of the unsaturated compounds having an electron-rich double bond and one of the unsaturated compounds having an electron-poor double bond. The invention also relates to the crosslinking of polyether carbonate polyols, the polyether carbonate polyols having electronpoor and electron-rich double bonds, and to the crosslinked polyether carbonates obtainable therefrom.