Patent · US Active

Method for producing polyether carbonate polyols

US9228054B2 · kind B2 · utility

2Cited by

9References

14Claims

0Family size

Assignee

Bayer Intellectual Property GmbH · DE

Inventors

Thomas Ernst Müller · Aachen, DE
Christoph Gürtler · Cologne, DE
Muhammad Afzal Subhani · Aachen, DE

Key dates

Filing date	Dec 10, 2012
Grant date	Jan 5, 2016
Priority date	—
Expiry date	Dec 10, 2032

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G18/4833
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to a method for producing polyether carbonate polyols by way of the catalytic addition of carbon dioxide and alkylene oxides to H-functional starter compounds in the presence of double metal cyanide (DMC) catalyzer that was activated in the presence of cyclic anhydride.

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