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

Abstract RU 2026313 C1

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 Ro= 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

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RU 2 026 313 C1

Authors

Kitaeva Lidija Gennad'Evna

Esipov Jurij Leonidovich

Kalinin Sergej Vasil'Evich

Kolosov Sergej Aleksandrovich

Presnjakov Vladimir Vasil'Evich

Nefedov Vladimir Petrovich

Dates

1995-01-09Published

1992-12-29Filed