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AssigneesMichael Diamantoglou, Helmut Magerlein, Rainer Zielke
InventorsMichael Diamantoglou, Helmut Magerlein, Rainer Zielke, Emery George Philomena Cornelissens
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A composition which consists essentially of a mixture of oligomeric and polymeric oxidation products of cellulose, hemicellulose and lignin containing carboxy, ether and hydroxy groups as obtained by the direct oxidation of a woody plant material, preferably in an aqueous suspension thereof, using alkali hypohalite in a one stage oxidation procedure or nitrogen dioxide, alkali periodate or lead tetraacetate followed by alkali chlorite or alkali hypochlorite in a two stage oxidation procedure. The resulting oxidation products as obtained by one of these specific processes are especially valuable as additives to a surface active detergent or cleaning agent.
A process for the production of a mixture consisting primarily of oligomeric and polymeric oxidation products of cellulose, hemicellulose and lignin containing carboxy, ether and hydroxy groups which comprises:
A process for the production of a mixture consisting primarly of oligomeric and polymeric oxidation products of cellulose, hemicellulose and lignin containing carboxy, ether and hydroxy groups which comprises oxidizing a woody plant material in a single stage with alkali hypohalite as the essential oxidizing agent or in two stages with nitrogen dioxide, alkali periodate or lead tetraacetate as the essential oxidizing agent of the first stage and with alkali chlorite or alkali hypochlorite as the essential oxidizing agent in the second stage with the proviso that halogen and an aqueous alkali hydroxide are simultaneously conducted into an initial aqueous suspension of the woody plant material being oxidized, the total amount of oxidizing agent being at least two parts by weight for each part by weight of said woody plant material.
Dependencies are inferred from the claim text.