Oxidation of polysaccharides with nitroxyls
AssigneeSCA Hygiene Products Zeist B.V.
InventorsPetter Bragd, Arie Cornelis Besemer, Jeffrey Wilson Thornton
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Abstract
A simplified process for oxidizing starch and other polysaccharides in an aqueous solution or suspension using hypochlorite in the presence of a catalytic amount of a nitroxyl compound is described. The oxidation is process is bromide-free and is carried out at a pH between 7 and 8.3 and at a temperature between 15 and 25° C.
Claims5
A process for oxidizing polysaccharides in an aqueous solution or suspension using hypochlorite in the presence of a catalytic amount of a nitroxyl compound, comprising carrying out the oxidation in the absence of a bromide catalyst, at a pH between 7.3 and 8.3 and at a temperature between 15 and 25° C. to obtain an oxidized polysaccharide containing 6-aldehyde and/or 6-carboxyl groups, substantially without depolymerization.
Dependencies are inferred from the claim text.