Kaneka Corporation

Satoru Yoshimura

Kazuaki Fujiwara

Masanobu Tamura

Aki Kano

Masaru Anahara

Akihiro Okamoto

Ryohei Noishiki

Hiroki Shinomiya

An acrylic fiber for artificial hair includes an acrylic copolymer obtained by copolymerizing acrylonitrile, vinyl chloride and/or vinylidene chloride, and a sulfonic acid group-containing vinyl monomer; and an organic solvent that can dissolve the acrylic copolymer, where the organic solvent is present in an amount of 0.1 to 3% by mass with respect to the total mass of the acrylic fiber for artificial hair. The acrylic fiber for artificial hair has an average surface roughness of 5900 μmor less in an area of 40 μm long and 80 μm wide of the side surface of the fiber.

Acrylic fiber for artificial hair, method for manufacturing said fiber, and headdress product containing said fiber

A fiber having unique gloss of appearance (flickering gloss) with light diffusibility, while maintaining natural feeling of gloss necessary as fiber for hair, is provided. The present invention may be attained by an artificial fiber for hair obtained from an acrylic based synthetic fiber having a single fiber size of 20 dtex to 80 dtex, the fiber having a maximum reflectance to a white light of 15% to 36% in case of a fiber having less than 21 of L value, or of 36% to 70% in case of a fiber having not less than 21 of L value, and having an optical diffusion coefficient of not less than 0.25.

Fiber for artificial hair and process for producing the same

An object of the present invention is to provide an acrylic synthetic fiber having excellent stylability and heat resistance. The object may be attained by an acrylic synthetic fiber having a knot-like unevenness on a fiber surface thereof, a difference of distances between a depression and a projection of 5.0 micrometers to 15.0 micrometers, a distance between peaks of unevenness of 0.05 mm to 0.5 mm, a flexural rigidity value of the fiber of 7.0&#xd7;10N-m/m to 10.0&#xd7;10N-m/m, and a torsional rigidity value of the fiber of 5.0&#xd7;10N-mto 10.0&#xd7;10N-m, and furthermore the object may be attained by an acrylic synthetic fiber comprising an acrylic copolymer having a content of acrylonitrile of not less than 60 mol %, a sulfur content originating in a vinyl based monomer including a sulfonic group of 0.15% by weight to 0.50% by weight, and a specific viscosity of 0.20 to 0.50.

Acrylic synthetic fiber improved in styleability

Growing community of inventors

Akashi, Japan

Satoru Yoshimura