Patent ID: 8980966
Filing Date: 2015-03-17
Classification: A61L,C08G

Abstract:
1. Process for preparing hydrophilic aliphatic polyurethane foams consisting essentially of mixing A) isocyanate-functional prepolymers having a weight fraction of low molecular weight aliphatic diisocyanates having a molar mass of 140 to 278 g/mol of below 1.0% by weight based on the prepolymer, obtainable by reaction of B) optionally heterocyclic 4-ring or 6-ring oligomers of low molecular weight aliphatic diisocyanates having a molar mass of 140 to 278 g/mol, C) water, D) optionally catalysts, E) optionally C F) optionally surfactants, and G) optionally mono- or polyhydric alcohols, and H) hydrophilic polyisocyanates obtainable by reaction of