PROCESS FOR PRODUCING FOAMED POLYURETHANES Russian patent published in 1995 - IPC

FIELD: refrigeration engineering. SUBSTANCE: hydroxyl-containing polyether, a catalyst, water, hydrofluoroalkene having a boiling temperature from -26.5 to 72 C are mixed in an amount of 1-45 wt parts and/or pentane in an amount of 1-15 wt parts per 100 wt parts of hydroxyl-containing polyether, hydroxyl-containing oligoethersiloxane of the general formula: wherein T=H, CH₃ R^o= C₃H₅ alkylene; R¹= R²=R³=CH₃ C₂H₅; y=2-2-160; p=2-3; m=1-40; n=0.40 in an amount of 0.1-5 wt parts per 10 wt parts of hydroxyl-containing polyether, and polyisocyanate is then added. The components are mixed and placed into a mold to be foamed and solidified. EFFECT: improved properties of the foamed polyurethane. 1 tbl