Crosslinked carboxy polysaccharides
AssigneeFidia S.p.A.
InventorsFrancesco Della Valle, Aurelio Romeo
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Abstract
Inter and/or intramolecular cross-linked esters of acid polysaccharides are disclosed in which a part or all of the carboxy groups are esterified with hydroxyl groups of the same molecule and/or of different molecules of the acid polysaccharide. These inner cross-linked esters of polysaccharide acids are useful in the field of biodegradable plastic materials, to manufacture sanitary and surgical articles, in the cosmetic and pharmaceutical fields, in the food industry and in many other industrial fields.
Claims65
Cross-linked carboxy acidic polysaccharides or a salt thereof having auto-crosslinking bonds consisting of direct ester and lactonic bonds formed between carboxyl groups of one acidic polysaccharide and hydroxyl groups of the same polysaccharide molecule and/or to hydroxyl groups of different polysaccharide molecules.
Dependencies are inferred from the claim text.