Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Reexamination Certificate
2005-04-05
2005-04-05
Wilson, James O. (Department: 1623)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
C514S057000, C424S494000, C204S157630, C204S157680
Reexamination Certificate
active
06875862
ABSTRACT:
A process for producing a self-cross-linking alkyl cellulose derivative, which includes irradiating, with radioactive rays, a mixture of a starting alkyl cellulose derivative (the number of carbon atoms of the alkyl group is 1 through 3, the alkyl group may be substituted by a hydroxyl group or a carboxyl group, and the carboxyl group may form a salt) (100 parts by weight) and water (5-2,000 parts by weight), and thus obtained self-cross-linking alkyl cellulose derivative has an improved biodegradability and excellent water-absorbability.
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1A 07; Radiation Processing of Biodegradable Polymer 3 Crosslinking of Cellulose Ethers At High Concentrated Aqueous Solution; Department of Biological and Chemical Engineering, Gunma Uniersity, Takasaki Radiation Chemistry Research Establishment, JAERI; Radoslaw A. Wach, Hiroshi Mitomo, Fumio Yoshii, Tamikazy Kume; pp. 14-15, 58-59.
Kume Tamikazu
Murakami Tadashi
Yoshii Fumio
Daicel Chemical Industries Ltd.
Japan Atomic Energy Research Institute
Krishnan Ganapathy
Nixon & Vanderhye P.C.
Wilson James O.
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