The invention relates to a highly branched polysaccharide which is
derivatized to provide a hydrophobicity which renders it compatible with
a polyether polyol with which the underivatized polysaccharide is
incompatible. Further the invention relates to a mix for the production
of polyurethane. The mix comprises a mixture of the derivatized
polysaccharide and a polyether polyol. The polysaccharide of the mix is
derivatized to provide a hydrophobicity which renders it compatible with
a polyether polyol with which the underivatized polysaccharide is
incompatible. The derivatized highly branched polysaccharide used in the
invention has an active hydrogen functionality of at least 15 and
comprises randomly bonded glucopyranose units, having an average number
of 10-100 glucose residues.