Polyurethane containing a polyol composition comprising a highly branched polysaccharide, mix and process for preparation thereof

摘要

The invention relates to a polyurethane obtainable by reacting a polyisocyanate and a polyol composition comprising a highly branched polysaccharide of randomly bonded glucopyranose units or an alkoxylated derivative of the same. The polysaccharide has an average number of 10-100 glucose residues and said polysaccharide and derivative both have an average functionality of 30 or more. The invention also relates to a process for the production of such a polyurethane as well as a mix for the production of a polyurethane comprising a polyol composition, comprising 2-100 % of a highly branched polysaccharide, at least one catalyst and at least one surfactant.