Patent · US Active

Process for preparing polyether carbonate polyols with double metal cyanide catalysts and in the presence of metal salts

US9080010B2 · kind B2 · utility

3Cited by

7References

13Claims

0Family size

Assignee

Bayer Intellectual Property GmbH · DE

Inventors

Aurel Wolf · Wülfrath, DE
Stefan Grasser · Leverkusen, DE
Christoph Gürtler · Cologne, DE
Jörg Hofmann · Krefeld, DE

Key dates

Filing date	Feb 17, 2011
Grant date	Jul 14, 2015
Priority date	—
Expiry date	Sep 6, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G18/32
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to a process for the preparation of polyether carbonate polyols by catalytic copolymerization of carbon dioxide (CO2) with alkylene oxides in the presence of one or more H-functional starter substances with the aid of double metal cyanide (DMC) catalysts and in the presence of metal salts.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.