Patent · US Active

Method for producing polyetherester carbonate polyols

US9296859B2 · kind B2 · utility

2Cited by

5References

18Claims

0Family size

Assignee

Bayer Intellectual Property GmbH · DE

Inventors

Christoph Guertler · Cologne, DE
Thoams Ernst Mueller · Aachen, DE
Anthony Kermagoret · Guidel, FR
Yvonne Dienes · Hannover, DE
Julien Barruet · Fresnes, FR
Aurel Wolf · Wülfrath, DE
Stefan Grasser · Leverkusen, DE

Key dates

Filing date	Dec 10, 2012
Grant date	Mar 29, 2016
Priority date	—
Expiry date	Dec 10, 2032

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G18/4825
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to a method for producing polyetherester carbonate polyols by means of catalytic addition of carbon dioxide, alkylene oxides and cyclic anhydrides to H-functional starter compounds in the presence of double metal cyanide (DMC) catalysts.

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