FUNCTIONALIZED POLYSACCHARIDES

摘要

The invention relates to an anionic polysaccharide characterized in that the same is selected from among the polysaccharides comprising carboxylic acid functions of formula (I), where the polysaccharide is selected from among the group consisting of natural, artificial, or modified dextran, alginate, hyaluronan, and galacturonan; i represents the degree of functionalization of the hydroxyls contained in each saccharide unit, where 0 < i = 3; j represents the degree of functionalization of the hydroxyls contained in each saccharide unit, where 0= j = 1 and 0 2-; L and Q are different from each other and represent a chain comprising 1 to 15 optionally branched and/or unsaturated carbons optionally comprising one or more heteroatoms such as O, N, and/and/or S, optionally comprising one or more saturated, unsaturated, or aromatic cycles or heterocycles, F is a function selected from among the group consisting of carbamate function, the carbonyl being linked to the radical Q, ester function, the carbonyl being linked to the radical Q, amide function, the carbonyl being linked to the radical Q, or carboxylate function; Grp is selected from among the group consisting of a monovalent or divalent cation, a chain comprising 4 to 50 optionally branched and/or unsaturated carbons optionally comprising one or more heteroatoms such as O, N, and/and/or S, especially in the form of functions selected from among the group consisting of carboxylic acid, alcohol, or thiol functions optionally comprising one or more saturated, unsaturated, or aromatic cycles or heterocycles; and if a carboxylic acid function is free, it is in the form of a salt; and the carboxylic acid functions are in the form of monovalent or divalent cation carboxylates.