Patent ID: 8673992
Filing Date: 2014-03-18
Classification: A61L,C08G,C08J

Abstract:
1. A polyurethane gel foam for use as a wound contact layer, the polyurethane gel foam being obtained from at least the following components that have been made to react: an isocyanate component A having a functionality f of f a polymeric polyol component B, wherein said polymeric polyol component B is a polyether polyol having a functionality f of 4≦f a polysaccharide C, wherein said polysaccharide C is calcium alginate, a ratio of a number of isocyanate groups of said isocyanate component A to a total number of hydroxyl groups, carboxy groups and carboxylate groups in said polymeric polyol component B and in said polysaccharide C being less than 1:3 and greater than or equal to 1:30, wherein a ratio of said number of isocyanate groups of said isocyanate component A to said total number of said carboxy groups and said carboxylate groups in said polysaccharide C is 1:3 to 1:10, wherein a ratio of a number of isocyanate groups of said isocyanate component A to a total number of hydroxyl groups, carboxy groups and carboxylate groups in said polymeric polyol component B and in said polysaccharide C is always less than a ratio of said number of isocyanate groups of said isocyanate component A to said total number of said carboxy groups and said carboxylate groups in said polysaccharide C.