公开(公告)号：US11873583B2

公开(公告)日：2024-01-16

申请号：US17312985

申请日：2019-11-20

Applicant: DENKA COMPANY LIMITED

Inventor： Atsushi Horihata ,  Atsushi Takei

IPC: D01F6/60

CPC classification number: D01F6/60 ,  D10B2331/02 ,  D10B2503/08

Abstract: A fiber for artificial hair constituted of a resin composition containing an aliphatic polyamide. A weight average molecular weight Mw of a dissolved component obtained when the fiber for artificial hair is dissolved in hexafluoroisopropanol is 46,000 or more and less than 65,000.

公开(公告)号：US11807747B2

公开(公告)日：2023-11-07

申请号：US17046155

申请日：2019-04-09

Applicant: DENKA COMPANY LIMITED

Inventor： Atsushi Horihata ,  Masamich Kanaoka ,  Atsushi Takei ,  Masashi Kume

IPC: C08L27/06 ,  A41G5/00 ,  C08F212/10 ,  C08F220/14 ,  C08L25/12 ,  C08L25/14 ,  C08L51/06

CPC classification number: C08L27/06 ,  A41G5/004 ,  C08F212/10 ,  C08F220/14 ,  C08L25/12 ,  C08L25/14 ,  C08L51/06 ,  C08L2201/04 ,  C08L2201/08 ,  C08L2203/12 ,  C08L2205/03

Abstract: The present invention provides a fiber for artificial hair and a hair decorating product having superior combing property. A fiber for artificial hair includes vinyl chloride based resin, vinyl based copolymer, and vinyl chloride based acrylic graft copolymer.

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).

公开(公告)号：US10385209B2

公开(公告)日：2019-08-20

申请号：US15529846

申请日：2015-09-09

Applicant: Denka Company Limited

Inventor： Yudai Ogawa ,  Kouta Nagaoka ,  Atsushi Horihata ,  Shigeharu Yoshii ,  Atsushi Takei

IPC: C08L77/06 ,  A41G3/00 ,  D01F6/90 ,  C08K3/22 ,  C08L63/00 ,  D01F1/07

Abstract: Polyamide-based fiber for artificial hair that is excellent in drip resistance, texture, and productivity is provided. According to the present invention, provided is fiber for artificial hair, including a resin composition containing: aliphatic polyamide; semi-aromatic polyamide with a skeleton obtained by polycondensation of aliphatic diamine and aromatic dicarboxylic acid; and a bromine-based flame retardant.

公开(公告)号：US20170260391A1

公开(公告)日：2017-09-14

申请号：US15529846

申请日：2015-09-09

Applicant: Denka Company Limited

Inventor： Yudai Ogawa ,  Kouta Nagaoka ,  Atsushi Horihata ,  Shigeharu Yoshii ,  Atsushi Takei

IPC: C08L77/06 ,  D01F6/90 ,  A41G3/00

CPC classification number: C08L77/06 ,  A41G3/00 ,  C08K3/2279 ,  C08L63/00 ,  C08L2201/02 ,  C08L2203/12 ,  C08L2205/025 ,  C08L2205/16 ,  C08L2205/22 ,  D01F1/07 ,  D01F6/90 ,  C08L69/00 ,  C08L25/18 ,  C08L71/10

Abstract: Polyamide-based fiber for artificial hair that is excellent in drip resistance, texture, and productivity is provided. According to the present invention, provided is fiber for artificial hair, including a resin composition containing: aliphatic polyamide; semi-aromatic polyamide with a skeleton obtained by polycondensation of aliphatic diamine and aromatic dicarboxylic acid; and a bromine-based flame retardant.