Manufacture of dimensionally stable polyurethane foams from...

Details Manufacture of dimensionally stable polyurethane foams from... Manufacture of dimensionally stable polyurethane foams from...

C - Chemistry, Metallurgy

08

G

403/31

C08G 18/10 (2006.01) C08G 18/46 (2006.01) C08G 18/50 (2006.01) C08J 9/14 (2006.01)

Patent

CA 1141097

O.Z. 0050/032961 Abstract of the disclosure: A process for the manufacture of dimensionally stable polyurethane foams by releasing, and curing by interaction with the atmosphere, a mixture, which is under pressure, of prepolymers, containing iso- cyanate groups, and blowing agents, with or without assistants and additives, wherein the prepolymers, containing isocyanate groups, are obtained by reaction of organic polyisocyanates with difunctional to octafunctional polyester-polyols and/or. polyether-polyols, containing chemically bonded tertiary amino groups in the polymer chain, or, preferably, with mixtures of such polyester-polyols and/or polyether-polyols and nitrogen-free polyester-polyols and/or polyether-polyols.

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