Flexible polyurethane foams having improved load bearing...

Details Flexible polyurethane foams having improved load bearing... Flexible polyurethane foams having improved load bearing...

C - Chemistry, Metallurgy

08

G

403/14

C08G 18/50 (2006.01) C08G 18/10 (2006.01)

Patent

CA 1229198

FLEXIBLE POLYURETHANE FOAMS HAVING IMPROVED LOAD BEARING CHARACTERISTICS ABSTRACT OF THE DISCLOSURE The present invention is directed to the discovery that the substitution of isocyanate coupled polyols for polyols conventionally used in the art leads to flexible polyurethane foams having significantly enhanced load bearing properties. More particularly, the present invention is directed to a process for the production of a flexible polyurethane foam having improved load bearing characteristics and to the foams so produced. The present process broadly comprises reacting an organic polyisocyanate with a coupled polyol in the presence of a blowing agent, a catalyst and a foam stabilizer. The coupled polyol consists essentially of the reaction product of an organic polyisocyanate and an organic compound having a hydroxy functionality ("functionality" as used herein is intended to mean the average number of reaction groups per molecule) of greater than 2, wherein the ratio of hydroxyl groups to isocyanate groups is greater than 1Ø

452113

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