Flexible polyurethane foams having improved load bearing charact

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

1983-05-05

1984-06-05

Cockeram, H. S.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521131, 521133, 521129, 521111, 521128, C08G 1814, C08G 1832

Patent

active

044529244

ABSTRACT:
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 1.0.

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