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AssigneeToray Industries, Inc.
InventorsKoichi Kubota, Tetsuya Katoh, Masayuki Hirata, Kazuya Hayashi
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A dyed synthetic fiber having antibacterial and antifungal properties is described, which contains 0.01 to 20 weight % of a silver-substituted zeolite and 0.001 to 1.0 weight % of a substantially water-insoluble copper compound. The copper compound is present independent of zeolite particles in the fiber. The dyed synthetic fiber is prepared by incorporating a silver-substituted zeolite in a monomer or a polymerization mixture before the completion of polymerization in the step of preparing a polymer for the fiber; further incorporating the copper compound in the polymer before the spinning thereof into a fiber; spinning the polymer into a fiber; and dyeing the fiber. The dyed fiber retains a high level of antibacterial and antifungal properties.
A dyed synthetic polyamide fiber having antibacterial and antifungal properties which comprises, based on the weight of the fiber, 0.01 to 20% by weight of a silver-substituted zeolite exhibiting antibacterial and antifungal action and 0.001 to 1.0% by weight of a substantially water-insoluble copper compound, said substantially water-insoluble copper compound being present independent of zeolite particles in the fiber and the fiber being dyed with an acid or a metallized dye and having a maximum water solubility in water of 100 mg per 100 g of water at a temperature of 20.degree. C.
A process for preparing a dyed synthetic polyamide fiber having antibacterial and antifungal properties, which comprises the steps of:
Dependencies are inferred from the claim text.