ISOCYANATO-REACTIVE MIXTURE AND ITS USE IN MANUFACTURE OF FLEXIBLE POLYURETHANE FOAM

摘要

The present invention is directed to a reactive mixture for use in preparing a flexible polyurethane foam and to the foams produced therefrom. The reactive mixture broadly comprises A) from more than 0 up to 3 parts by weight per 100 parts by weight of components B) and C) of an amine of the formula: H2N - R - NH2 where R is a C4 to C10 straight or branched alkylene group, or a C4 to C15 alicyclic group, B) from 0 to 30% by weight of a polyoxyalkylene polyamine having a molecular weight of from about 400 to 5000 and containing from 2 to 3 primary amino groups, and C) from 70 to 100% by weight of one or more polyether polyhydroxyl compounds having hydroxyl functionalities of from 2 to 3 and molecular weights of from about 1000 to about 10,000, the percents of components B) and C) totalling 100%.