Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Reexamination Certificate
2007-04-24
2007-04-24
Jiang, Shaojia Anna (Department: 1623)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
C536S055100, C536S056000, C536S124000, C514S023000, C514S025000, C514S054000, C514S057000
Reexamination Certificate
active
11062565
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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Development of Radiation Crosslinking Techniques of Biodegrable Polymers; F. Yoshii, R.A. Wach, H. Nagasawa, H. Mitomo and T. Kume; Polymer Preprings, Japan, vol. 49, No. 14 (2000); pp. 4375-4376.
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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 Chenical Engineering, Gunma University, Takasaki Radiation Chemistry Research Establishment, JAERI; Radoslaw A. Wach, Hrioshi Mitomo, Fumio Yoshii, Tamikazy Kume; pp. 14-15, 58-59 (2000).
Kume Tamikazu
Murakami Tadashi
Yoshii Fumio
Daicel Chemical Industries Ltd.
Japan Atomic Energy Research Institute
Jiang Shaojia Anna
Krishnan Ganapathy
Nixon & Vanderhye P.C.
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