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 solvent 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.
Claims21
A method of producing a water soluble alginate fiber 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, 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, while continuously rolling the resultant fiber for recovery thereof, thereby to obtain the water soluble alginate fiber.
Dependencies are inferred from the claim text.