Process for the production of moldings of polyurethane foams

Details Process for the production of moldings of polyurethane foams Process for the production of moldings of polyurethane foams

C - Chemistry, Metallurgy

08

J

C08J 9/06 (2006.01) C08G 18/06 (2006.01) C08G 18/34 (2006.01) C08G 18/67 (2006.01) C08J 9/08 (2006.01) C08L 75/04 (2006.01)

Patent

CA 2118563

A PROCESS FOR THE PRODUCTION OF MOLDINGS OF POLYURETHANE FOAMS ABSTRACT OF THE DISCLOSURE The present invention relates to a process for the production of polyurethane foam moldings having a compact surface skin and a density of at least 150 kg/m3 comprising foaming a polyurethane-forming starting mixture inside a mold. The starting mixture comprises organic blowing agents which correspond to one or both of the following general formulas: HOOC-R-COOH (I) wherein: R represents a CH2 group or a CH=CH group; and Image (II) wherein: R1 and R2 independently of one another represent either a hydrogen atom or a C1-6 alkyl radical wherein the hydrogen atoms may be partly substituted by OH groups.

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