Patent ID: 9206281
Filing Date: 2015-12-08
Classification: C08G,C08J

Abstract:
1. A porous gel comprising, in reacted form: (a1) 30 to 90% by weight of a polyfunctional isocyanate, (a2) 9.99 to 66% by weight of at least one polyfunctional aromatic amine selected from the group consisting of 4,4′-diaminodiphenylmethane, 2,4′-diaminodiphenylmethane, 2,2′-diaminodiphenylmethane and oligomeric diaminodiphenylmethane, and (a3) 0.01 to 4% by weight of a polyalkylenepolyamine, based on the total weight of (a1), (a2) and (a3), wherein the polyalkylenepolyamine is an aliphatic amine which comprises at least three reactive amino groups.