Water soluble algin fibers and production thereof
AssigneesSakai Chemical Industry Co., Ltd., Agency of Industrial Science and Technology
InventorsYoshinari Kobayashi, Hiroshi Kamishima, Satoshi Fukuoka, Hideki Obika, Tsutomu Asaoka, Keishi Tenma
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Abstract
There is disclosed water soluble algin fibers and such fibers which have antibiotics immobilized thereto. The water soluble algin fibers are produced by extruding an aqueous dope which contains water soluble algin therein into a large quantity of a hydrophilic organic nonsolvent exemplified by acetone. The water soluble algin fibers which have antibiotics immobilized thereto are produced in the same manner by using a dope containing antibiotics.
Claims17
A method of producing a water soluble alginate fiber having an antibiotic immobilized thereto which comprises extruding an aqueous dope consisting essentially of a water soluble alginate selected from the group consisting of sodium alginate, lithium alginate, potassium alginate, magnesium alginate, ammonium alginate, an organic amine salt and a water soluble alginate ester, and an antibiotic in water, from a nozzle having openings of a diameter of 0.025-1 mm, into a coagulating bath consisting essentially of a hydrophilic organic nonsolvent in an amount of not less than 50% by weight and water to displace the water in the dope with the nonsolvent promptly, while continuously rolling the resultant fiber for recovery thereof, to thereby obtain the water soluble alginate fiber having an antibiotic immobilized thereto.
Dependencies are inferred from the claim text.