method for forming a flexible open cell polyurethane molded foam having a 65 target ifd, method for forming a flexible open cell polyurethane foam, car seat, foaming composition to form a flexible open cell polyurethane foam, and method for forming a flexible open cell viscoelastic foam

摘要

Methods and compositions for forming flexible open cell viscoelastic foams using a thermosetting composition comprising one or more components capable of forming a thermosetting matrix and a blowing agent comprising at least one chemical blowing agent such as water are disclosed. , and at least one physical blowing agent selected from the group consisting of trans-1-chloro-3,3,3-trifluoropropene (hfco-1233zd (e)), 1,1,1,3,3-pentafluoropropane (hfc-245fa); 1,1,1,3,3-pentafluorobutane (365mfc), mixtures consisting essentially of at least about 80% hfc-365mfc and 1,1,1,2,3,3,3-heptafluoropropane (227ea), and combinations of any two or more of these.