PROCESS FOR MAKING POLYURETHANE FOAMS

摘要

BP Case No. 4771 Cold cured moulded polyurethane flexible foams having improved vibration damping properities are made by foaming in the presence of (1) a high molecular weight predominantly linear siloxane polyoxyalkylent block copolyner and (2 ) a solvent which is compatible with the block copolymer and which has a viscosity of 3 to loo cps and a surface tension between 15 and 60 dynes/cm.