Acrylic fiber for artificial hair, method for producing same, and head decoration product comprising same
AssigneeKaneka Corporation
InventorsAkihiro Okamoto, Aki Kano, Masato Fujita
Life of this patent
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Abstract
An acrylic fiber for artificial hair includes an acrylic polymer and an organic solvent that can dissolve the acrylic polymer, wherein the acrylic polymer includes 29.5 to 79.5% by weight of acrylonitrile, 20 to 70% by weight of vinyl chloride and/or vinylidene chloride, and 0.5 to 5% by weight of a sulfonic acid-containing vinyl monomer with respect to a total weight of the acrylic polymer, and wherein a content of the organic solvent in the acrylic fiber is 0.1 to 3% by weight.
Claims8
An acrylic fiber for artificial hair, comprising an acrylic polymer and an organic solvent that can dissolve the acrylic polymer,
- wherein the acrylic polymer comprises, with respect to a total weight of the acrylic polymer, 29.5 to 79.5% by weight of acrylonitrile, 20 to 70% by weight of vinyl chloride and/or vinylidene chloride, and 0.5 to 5% by weight of a sulfonic acid-containing vinyl monomer,
- wherein a content of the organic solvent in the acrylic fiber is 0.1 to 3% by weight, and
- wherein the acrylic fiber has a single fiber fineness of 30 to 100 dtex.
A method for producing an acrylic fiber for artificial hair, the method comprising:
- extruding a spinning solution through a spinning nozzle to form a yarn;
- drawing the yarn to prepare a primary drawn yarn and washing it with water;
- and
- impregnating the water-washed primary drawn yarn with an organic solvent that can dissolve the acrylic polymer so that a content of the organic solvent in the acrylic fiber is 0.1 to 3% by weight,
- wherein the spinning solution comprises an acrylic polymer comprising, with respect to a total weight of the acrylic polymer, 29.5 to 79.5% by weight of acrylonitrile, 20 to 70% by weight of vinyl chloride and/or vinylidene chloride, and 0.5 to 5% by weight of a sulfonic acid-containing vinyl monomer, and
- wherein the acrylic fiber has a single fiber fineness of 30 to 100 dtex.
Dependencies are inferred from the claim text.