Patent · US Active

Process for the activation of double metal cyanide catalysts for the preparation of polyether carbonate polyols

US8933192B2 · kind B2 · utility

17Cited by

8References

15Claims

0Family size

Assignee

Bayer Intellectual Property GmbH · DE

Inventors

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

Key dates

Filing date	Jan 18, 2011
Grant date	Jan 13, 2015
Priority date	—
Expiry date	Jan 18, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/141
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

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

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