| abstract |
The invention concerns a method for obtaining modified polysaccharides by oxidation of hydroxyl groups, which consists in subjecting the polysaccharide to the action of a peroxide in the presence of at least a phtalocyanine-metal complex serving as catalyst, the metal being selected among Fe, Co, Mn, Ni, V and Ru. The peroxide is selected among alkali metal or alkaline-earth metal percarbonates and perborates, alkyl peroxides, paracetic acid and hydrogen peroxide. |