Copolimero in blocks of silovana poly oxy - alcoileno which structure comprises u 'mixing reactive to form poly - uretana foam curavel process to form an article of poly - uretana foam moldadThe process to produce a second lining on a material of alapetamento

摘要

Linear siloxane-polyoxyalkylene (AB)n block copolymers having an average molecular weight of at least about 30,000, compositions of polyurethane-forming froths containing said copolymers, the curable froths produced from said compositions, methods for utilizing said froths as well as the cured foams and articles produced therefrom, said froths having utility in the production of molded polyurethane foam articles, foam backings for carpeting and fabrics, coatings for wire, cable and other articles, small cavity encapsulations, and the like.