RIGID POLYURETHANE FOAM AND PROCESS FOR PRODUCING THE SAME

摘要

Rigid polyurethane foams produced by reacting a polyol component having a special composition with an isocyanate component in the presence of a blowing agent, a reaction catalyst and a foam stabilizer with a mold release time of as short as 5.5 minutes or less, have remarkably low thermal conductivity of 12.5 x 10<-><3> Kcal/m.hr. DEG C or less and a low density and are suitable as heat insulating materials for refrigerators and the like.