Process for preparing double metal cyanide catalyzed polyols
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United States of America Patent
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Apr 26, 2005
Grant Date -
Dec 9, 2004
app pub date -
Jun 9, 2003
filing date -
Jun 9, 2003
priority date (Note) -
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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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