Antistatic acrylic fiber and a method for manufacturing the same
AssigneeJapan Exlan Company Limited
InventorsYoshiki Yamato, Yoshihiro Watanabe
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Abstract
The present invention is an antistatic acrylic fiber which comprises 90 to 99% by weight of acrylonitrile polymer containing 80 to 100% by weight of acrylonitrile as a constituting component and 10 to 1% by weight of acrylic antistatic resin containing 10 to 70% by weight of acrylonitrile as a constituting component, characterized in that alkali metal ion is contained in the fiber in an amount of not less than 150 ppm. The acrylic fiber of the present invention has antistatic property which does not lower so much even if the fiber is subjected to a spinning and dyeing step.
Claims11
An antistatic acrylic fiber which comprises 90 to 99% by weight of acrylonitrile polymer containing 80 to 100% by weight of acrylonitrile as a constituting component and 10 to 1% by weight of acrylic antistatic resin containing 10 to 70% by weight of acrylonitrile as a constituting component, wherein alkali metal ion is contained in an amount of not less than 150 ppm to the fiber.
A method for the manufacture of an antistatic acrylic fiber, characterized in that a spinning dope containing a polymer mixture which comprises 90 to 99% by weight of acrylonitrile polymer containing 80 to 100% by weight of acrylonitrile as a constituting component and 10 to 1% by weight of acrylic antistatic resin containing 10 to 70% by weight of acrylonitrile as a constituting component is subjected to a wet spinning and, after the resulting fiber is washed with water and drafted, it is treated with an aqueous solution of alkali metal salt and then densified.
Dependencies are inferred from the claim text.