Patent · US Expired

Method for producing polyether alcohols

US7241926B2 · kind B2 · utility

0Cited by

9References

12Claims

0Family size

Assignee

BASF SE

Inventors

Edward Bohres · Ludwigshafen, DE
Ulrich Müller · Neustadt, DE
Raimund Ruppel · Dresden, DE
Eva Baum · Schwarzheide, DE

Key dates

Filing date	Nov 8, 2002
Grant date	Jul 10, 2007
Priority date	—
Expiry date	May 12, 2023

Classification

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

Abstract

A process for preparing polyether alcohols by addition of alkylene oxides onto H-functional starter substances in the presence of multimetal cyanide catalysts, wherein the multimetal cyanide catalysts are microporous and have a specific surface area of more than 100 m2/g, determined by nitrogen adsorption at 77 K.

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