Patent ID: 6066683
Filing Date: 2000-05-23
Classification: C08G

Abstract:
In a process for the preparation of a polyurethane slab or molded foam by the reaction of a di- or polyisocyanate with a polyether polyol in the presence of blowing agent(s), catalyst(s), chain extender(s), crosslinker(s), surfactant(s), additives and auxiliaries, the improvement comprising:selecting as at least a portion of said polyol component a processing latitude-increasing DMC-catalyzed, spread EO polyoxypropylene polyol having a nominal functionality of 2 or more, a random oxyethylene content of about 1.5 weight percent to less than 10 weight percent, wherein not more than 5 weight percent of the total DMC-catalyzed oxyalkylation period used in preparing said spread EO polyoxypropylene polyol is conducted in the absence of ethylene oxide.