Process for the preparation of polymer polyol dispersions
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United States of America Patent
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Sep 21, 1999
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app pub date -
Aug 20, 1997
filing date -
Nov 30, 1995
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Abstract
Polymer polyols and polymer-modified polyols having substantially no transition metal content in the polyol continuous phase may be prepared from encapsulative double metal cyanide complex-catalyzed polyoxy-alkylene polyether base polyols without substantial removal of double metal cyanide complex catalyst residues from the base polyol and subsequent in situ polymerization of one or more polymerizable monomers.
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