Patent ID: 8247546
Filing Date: 2012-08-21
Classification: A61K,C08B

Abstract:
1. Acid autocrosslinked polysaccharides, characterised by the concomitant presence of esters with formic and with non-polysaccharide carboxylic acids and auto-cross-linked by esters between the acid groups of the same polysaccharide and the alcoholic groups of the repetitive units, wherein the starting polysaccharide is a glycosaminoglycan selected from hyaluronan, chondroitin sulphate, heparan sulphate, dermatan sulphate, and keratan sulphate and wherein the esters of the non-polysaccharide carboxylic acids on the hydroxyls present a degree of substitution ranging between 0.01 and 0.9×N, where N is the number of hydroxyls present in the repetitive unit, and the formic ester is present in the range between 0.01 and 0.2.