Process for making ethylene oxide-capped polyols from double met

Details Process for making ethylene oxide-capped polyols from double met Process for making ethylene oxide-capped polyols from double met

1995-06-21

1996-10-08

Short, Patricia A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

528419, 528421, 568618, 568620, 568623, 568624, C08G 6532

Patent

active

055632211

ABSTRACT:
A process for making high-primary, low-unsaturation polyols is disclosed. A polyol made by double metal cyanide (DMC) catalysis is blended with a polyol made by basic catalysis, and the polyol blend is reacted with ethylene oxide to produce an ethylene oxide-capped potyol. The process overcomes problems of the conventional recatalysis approach to making EO-capped polyols from DMC-catalyzed polyols.

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J. L. Schuchardt et al., "Preparation of High Molecular Weight Polyols Using Double Metal Cyanide Catalysts", Oct. 1989, p. 360

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