Patent · US Expired

Preparation of polyetherpolyols in the presence of a multimetal cyanide complex catalyst

US7022884B2 · kind B2 · utility

2Cited by

7References

16Claims

0Family size

Assignee

BASF SE

Inventors

Thomas Ostrowski · Mannheim, DE
Kathrin Harre · Dresden, DE
Georg Heinrich Grosch · Bad Dürkheim, DE
Jurgen Winkler · Schwarzheide, DE

Key dates

Filing date	Feb 16, 2001
Grant date	Apr 4, 2006
Priority date	—
Expiry date	Apr 10, 2021

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J2219/00094
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Polyetherpolyols are prepared by reacting diols or polyols with ethylene oxide, propylene oxide, butylene oxide or a mixture thereof in the presence of a multimetal cyanide complex catalyst by a process which is carried out in a vertical, highly cylindrical reactor having a central stirrer and having heat exchanger plates through which a heat-exchange medium flows and which are arranged essentially in the longitudinal direction of the reactor, at an angle α of from 0 to 70° in the direction of rotation of the stirrer relative to the reactor radius.

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