Process for preparing a flexible foam

Details Process for preparing a flexible foam Process for preparing a flexible foam

C - Chemistry, Metallurgy

07

C

C07C 69/60 (2006.01) C07C 59/60 (2006.01) C07C 69/34 (2006.01) C07C 69/80 (2006.01) C08G 18/22 (2006.01) C08G 18/40 (2006.01) C08G 18/48 (2006.01) C08G 18/63 (2006.01) C08G 65/333 (2006.01)

Patent

CA 2158653

A method for the preparation of flexible polyurethane foams by reacting a polyisocyanate containing at least 85 % by weight of 4,4'- diphenylmethane diisocyanate or a liquid variant thereof with a polyol composition comprising at least one poly(oxyethylene-oxyalkylene) polyol having an average nominal hydroxyl functionality of from 2 to 6, a number average hydroxyl equivalent weight of from 1000 to 3000, and an average oxyethylene content of from 50 to 85 % by weight and with water in the presence of a catalytically effective amount of an alkali or alkaline earth metal carboxylate salt.

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