Patent ID: 8951991
Filing Date: 2015-02-10
Classification: A61L,A61P,C08L

Abstract:
1. A polysaccharide composition comprising aqueous solutions of mixtures of at least one anionic polysaccharide and at least one oligosaccharide derivative of chitosan, wherein the at least one anionic polysaccharide has a molecular weight of at least 100 kDa; the chitosan derivatives have a degree of derivatization of at least 40% and the aqueous solutions have an ionic strength of at least 50 mM and not greater than 175 mM and a pH of at least 7 and wherein the at least one anionic polysaccharide and the at least one oligosaccharide derivative of chitosan remain in solution without phase separation and without formation of coacervates and the polysaccharide composition exhibits a synergistic increase of viscosity and viscoelasticity in comparison to the anionic polysaccharide.