Patent · US Active

Method for activating double metal cyanide catalysts for producing polyether polyols

US9249259B2 · kind B2 · utility

15Cited by

8References

15Claims

0Family size

Assignee

Bayer Intellectual Property GmbH · DE

Inventors

Thomas Ernst Müller · Aachen, DE
Christoph Gürtler · Cologne, DE
Matthias Wohak · Dormagen, DE
Jörg Hofmann · Krefeld, DE
Muhammad Afzal Subhani · Aachen, DE
Maurice Cosemans · Heinsberg, DE
Walter Leitner · Aachen, DE

Key dates

Filing date	Jul 17, 2012
Grant date	Feb 2, 2016
Priority date	—
Expiry date	Aug 23, 2032

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G65/2663
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to a process for the activation of double metal cyanide (DMC) catalysts and to a process for the preparation of polyethercarbonate polyols from one or more H-functional starter compounds, one or more alkylene oxides and carbon dioxide in the presence of a double metal cyanide catalyst, characterized in that

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