Process for preparing double metal cyanide catalyzed polyols

Details Process for preparing double metal cyanide catalyzed polyols Process for preparing double metal cyanide catalyzed polyols

2005-04-26

2005-04-26

Gorr, Rachel (Department: 1711)

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

Synthetic resins

Cellular products or processes of preparing a cellular...

C568S620000, C568S624000, C528S412000, C528S415000, C528S421000

Reexamination Certificate

active

06884826

ABSTRACT:
The present invention provides a process for preparing a polyoxyalkylene polyol by polyoxyalklating a starter compound with a mixture of two different alkylene oxide monomers in which the first alkylene oxide monomer content of the mixture decreases as the content of the second alkylene oxide monomer increases over the course of the polyoxyalkylation, digesting unreacted monomers of the alkylene oxides and capping the polyol.

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