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    Resin composition for artificial hair and molded body of same
    1.
    发明授权
    Resin composition for artificial hair and molded body of same 有权

    公开(公告)号：US10905183B2

    公开(公告)日：2021-02-02

    申请号：US16088799

    申请日：2017-03-07

    Applicant: DENKA COMPANY LIMITED

    Inventor： Megumi Tsukahara ,  Atsushi Horihata ,  Atsushi Takei

    IPC: A41G3/00 ,  D01F6/62 ,  D01F6/92 ,  D01F1/07

    Abstract: A resin composition for flame retardant artificial hair which has favorable transparency and combability similar to those of human hair and exhibits excellent flame retardancy. A resin composition for flame retardant artificial hair is obtained by configuring a resin composition including 100 parts by mass of a polyester (A) and 5-40 parts by mass of a bromine-containing flame retardant (B) including at least one kind selected from poly(pentabromobenzyl acrylate), a brominated phenol resin, and polydibromophenylene oxide, wherein the melt viscosity of the polyester (A) is 80-300 Pa·s.

    Fiber for artificial hair
    2.
    发明授权
    Fiber for artificial hair 有权

    公开(公告)号：US10856598B2

    公开(公告)日：2020-12-08

    申请号：US16085898

    申请日：2017-03-21

    Applicant: DENKA COMPANY LIMITED

    Inventor： Koji Miyata ,  Atsushi Horihata ,  Kazuhito Sonoda ,  Atsushi Takei

    IPC: A41G3/00 ,  D01F8/14 ,  D01F1/07 ,  D01F8/12

    Abstract: Provided is an artificial hair fiber which can prevent detachment between core and sheath, having superior texture close to human hair, and having superior curl retention. An artificial hair fiber has a core-sheath structure, including: a core; and a sheath covering the core; and: the core includes a core resin composition including polyester; the sheath includes a sheath resin composition including polyamide; the core and the sheath have a core/sheath mass ratio of 40/60 to 90/10; and when a melt viscosity of the polyester of the core is expressed as a, and a melt viscosity of the polyamide of the sheath is expressed as b, a viscosity ratio a/b is 0.5 to 2.5.

    Fiber for artificial hair and head accessory product
    4.
    发明授权
    Fiber for artificial hair and head accessory product 有权

    公开(公告)号：US12031240B2

    公开(公告)日：2024-07-09

    申请号：US17296280

    申请日：2019-11-15

    Applicant: DENKA COMPANY LIMITED

    Inventor： Atsushi Horihata ,  Atsushi Takei

    IPC: D01F6/48 ,  A41G3/00

    CPC classification number: D01F6/48 ,  A41G3/00 ,  D10B2321/041 ,  D10B2401/061 ,  D10B2503/08

    Abstract: A fiber for artificial hair formed of a polyvinyl chloride-based resin composition. The fiber for artificial hair has a value X1 of a loss tangent tans at 70° C. of 0.06 or more and 0.12 or less, when dynamic viscoelasticity is measured under the following conditions, and has a peak in a temperature range of 90° C. or higher and 110° C. or lower. (Dynamic viscoelasticity measurement conditions) The measurement is performed by sandwiching a bundle of 40 fibers for artificial hair that are arranged at a heating rate of 4° C./min and a frequency of 1 Hz.

    FIBER BUNDLE FOR ARTIFICIAL HAIR
    5.
    发明申请
    FIBER BUNDLE FOR ARTIFICIAL HAIR 审中-公开

    公开(公告)号：US20200288801A1

    公开(公告)日：2020-09-17

    申请号：US16765789

    申请日：2019-03-01

    Applicant: DENKA COMPANY LIMITED

    Inventor： Takashi Muraoka ,  Atsushi Horihata ,  Atsushi Takei

    IPC: A41G3/00 ,  C08K5/523 ,  C08K3/11 ,  A41G5/00 ,  D01F6/90 ,  D01F6/92 ,  D02G3/44

    Abstract: A fiber bundle for artificial hair that has good curl setting characteristics, good combing property, tactile sensation and glossiness similar to human hair, and flame retardancy is provided. According to the present invention, provided is a fiber bundle for artificial hair is comprising 20 to 90 parts by mass of a polyester fiber and 10 to 80 parts by mass of a polyamide fiber, wherein the polyester fiber contains a polyester resin (A), a flame retardant (C1) and an auxiliary flame retardant (D1), and the polyamide fiber contains a polyamide resin (B), a flame retardant (C2) and an auxiliary flame retardant (D2).

    ARTIFICIAL HAIR FIBER HAVING SHAPE MEMORY AND SHAPE RESTORATION FUNCTION, ARTIFICIAL HAIR FIBER HAVING EXCELLENT FLAME RESISTANCE, AND ARTIFICIAL HAIR FIBER HAVING LOW GLOSS APPEARANCE
    6.
    发明申请
    ARTIFICIAL HAIR FIBER HAVING SHAPE MEMORY AND SHAPE RESTORATION FUNCTION, ARTIFICIAL HAIR FIBER HAVING EXCELLENT FLAME RESISTANCE, AND ARTIFICIAL HAIR FIBER HAVING LOW GLOSS APPEARANCE 有权
    具有形状记忆和形状恢复功能的人造毛发纤维，具有优异耐火性的人造毛发和具有低光泽外观的人造毛发纤维

    公开(公告)号：US20160255894A1

    公开(公告)日：2016-09-08

    申请号：US15028394

    申请日：2014-10-09

    Applicant: DENKA COMPANY LIMITED

    Inventor： Tomohiro Kimura ,  Yudai Ogawa ,  Yuhei Kasahara ,  Atsushi Horihata

    IPC: A41G3/00 ,  C08L77/06

    CPC classification number: A41G3/0083 ,  C08L77/02 ,  C08L77/06 ,  D01F1/10 ,  D01F6/60 ,  C08L83/04 ,  C08L9/02 ,  C08L33/04

    Abstract: Artificial hair fiber having shape memory and shape restoration function, artificial hair fiber having excellent flame resistance, and artificial hair fiber having low gloss appearance are provided.Provided is an artificial hair fiber including a resin composition including at least one polyamide, the artificial hair fiber satisfying at least one of constitutions (1) to (3): (1) the fiber has a modulus of elasticity of 2400 to 3000 N/mm2; (2) the polyamide has a weight average molecular weight Mw of 6.5×104 to 15×104 and the fiber has a modulus of elasticity of 500 to 15000 N/mm2; (3) the fiber has a modulus of elasticity of 500 to 15000 N/mm2 and the resin composition contains 5 to 20 parts by mass of fine particles with respect to 100 parts by mass of the polyamide.

    Abstract translation: 提供具有形状记忆和形状恢复功能的人造毛发纤维，具有优异的阻燃性的人造毛发纤维和具有低光泽外观的人造毛发纤维。 本发明提供一种包含至少一种聚酰胺的树脂组合物的人造毛发纤维，所述人造毛发纤维满足（1）〜（3）中的至少一个：（1）纤维的弹性模量为2400〜3000N / mm2; （2）聚酰胺的重均分子量Mw为6.5×10 4〜15×10 4，纤维的弹性模量为500〜15000N / mm 2; （3）纤维的弹性模量为500〜15000N / mm 2，相对于100质量份的聚酰胺，树脂组合物含有5〜20质量份的微粒。

    FIBERS FOR ARTIFICIAL HAIR
    10.
    发明申请
    FIBERS FOR ARTIFICIAL HAIR 审中-公开

    公开(公告)号：US20190307192A1

    公开(公告)日：2019-10-10

    申请号：US16309857

    申请日：2017-06-27

    Applicant: DENKA COMPANY LIMITED

    Inventor： Atsushi Horihata ,  Atsushi Takei ,  Rentaroh Suzuki

    IPC: A41G3/00 ,  A41G5/00 ,  D01F6/60

    Abstract: The present invention is to provide a fiber for artificial hair which can freely change the hairstyle at home while maintaining the wave shape of the fiber.A fiber for artificial hair having a bending rigidity maintaining ratio defined by formula (1) is 40 to 80% and a heat shrinkage ratio defined by formula (2) is 0.0 to 5.0% is provided. bending rigidity maintaining ratio (%)=100×{(bending rigidity in a state after conditioning for 24 hours at 30° C.×90% RH)/(bending rigidity in a state after conditioning for 24 hours at 23° C.×50% RH)}  (1) heat shrinkage ratio (%)=100×{(length before heat treatment)−(length after heat treatment for 5 min at 155° C.)}/(length before heat treatment)  (2).

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