Density reduction in flexible polyurethane foams

Details Density reduction in flexible polyurethane foams Density reduction in flexible polyurethane foams

C - Chemistry, Metallurgy

08

J

18/31

C08J 9/08 (2006.01) C08G 18/32 (2006.01) C08G 18/50 (2006.01) C08G 18/66 (2006.01)

Patent

CA 2015820

Abstract of the Disclosure Improved, flexible, open-celled polyurethane foams of reduced density, but with stability and firmness characteristics comparable to those of standard foams, are described. The foams are formed in situ from the reaction, in the presence of a catalyst, of an isocyanate, one or more blowing agents including water, a foam stabilizer, a polyether polyol, and a liquid salt produced from the reaction of CO2 with a water-soluble amine or amino alcohol. Preferred amines or amino alcohols for the CO2 salt include primary amines and polyols which contain primary amino and groups, secondary amines which contain primary hydroxyl groups, and a variety of low molecular weight aminohydroxy compounds. The liquid salt is present in the foam formulations in an amount of at least 2 parts by weight per 100 parts by weight of polyol.

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