Patent ID: 6143802
Filing Date: 2000-11-07
Classification: B01J,C01B,C07D,C08G

Abstract:
A polyurethane foam prepared by reaction of one or more di- or polyisocyanates with a polyol component comprising a polyol polymer dispersion, in the presence of an effective amount of a blowing agent, said polyol polymer dispersion comprising a polyoxyalkylene polyol continuous phase and dispersed polymer phase prepared by in situ polymerization in said polyoxyalkylene polyol continuous phase, said polyoxyalkylene polyol continuous phase prior to said in situ polymerization comprising one or more oxypropylene moiety-containing polyoxyalkylene polyols prepared in the presence of an encapsulative double metal cyanide complex oxyalkylation catalyst and having transition metals from said encapsulative double metal cyanide contained therein, whereby the polyoxyalkylene continuous phase of said polyol polymer dispersion following in situ polymerization contains less than 40% of the content of transition metals which said continuous phase had prior to in situ polymerization, and the dispersed phase contains polymer particles associated with said transition metals.