Patent ID: 6271279
Filing Date: 2001-08-07
Classification: C08G

Abstract:
A process for the production of a flexible foam comprising(A) reacting(1) a liquid, storage stable, allophanate-modified polyisocyanate having an NCO group content of from about 20 to about 42%, and which comprises the reaction product of(a) a polyisocyanate, and(b) a compound selected from the group consisting of 1,2-propylene glycol and 1,3-butanediol; with(2) an isocyanate-reactive component comprising at least one compound which contains isocyanate-reactive groups;in the presence of(3) a blowing agent; and(4) at least one catalyst;wherein the reaction is conducted at an isocyanate index of from about 75 to about 115.