Patent ID: 6121337
Filing Date: 2000-09-19
Classification: C08J

Abstract:
A homogeneous B-side composition for the preparation of polyisocyanate-based polymer foams, comprisinga) a liquid active hydrogen-containing component having at least one polyol selected from the group consisting of polyether polyols, polyester polyols, and polyhydroxy-terminated acetal resins;b) a gaseous blowing agent comprising 1,1,2,2-tetrafluoroethane (HFC-134) dissolved in said active hydrogen-containing component, whereinsaid B-side composition comprises a homogeneous solution comprising 2.1-40.2 weight percent of said blowing agent dissolved in said active hydrogen-containing component, said solution having a saturated vapor pressure of 15-97 psia at a temperature of 10.degree. C.-50.degree. C.