Fiber for artificial hair and hair decorating product

Patent metadata

Field	Value
Publication number	US-11807747-B2
Application number	US-201917046155-A
Country	US
Kind code	B2
Filing date	Apr 9, 2019
Priority date	Jun 7, 2018
Publication date	Nov 7, 2023
Grant date	Nov 7, 2023

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.

First claim

The invention claimed is:

1. A fiber for artificial hair, comprising: vinyl chloride based resin, vinyl based copolymer, and vinyl chloride based acrylic graft copolymer,
wherein the vinyl chloride based acrylic graft copolymer has an average degree of polymerization of 600 to 1000, and
the vinyl chloride based acrylic graft copolymer is contained by 1 to 12 parts by mass with respect to 100 parts by mass of sum of the vinyl chloride based resin and the vinyl based copolymer.

2. The fiber for artificial hair of claim 1 , wherein 100 parts by mass of sum of the vinyl chloride based resin and the vinyl based copolymer contains 50 to 95 parts by mass of the vinyl chloride based resin and 5 to 50 parts by mass of the vinyl based copolymer.

3. The fiber for artificial hair of claim 1 , wherein the vinyl chloride based acrylic graft copolymer contains 8 to 55 mass % of acryl based copolymer.

4. The fiber for artificial hair of claim 1 , wherein the vinyl based copolymer contains 10 to 85 mass % of aromatic vinyl monomer unit, 0 to 40 mass % of vinyl cyanide monomer unit, and 0 to 85 mass % of methacrylic acid ester monomer unit.

5. The fiber for artificial hair of claim 4 , wherein the vinyl based copolymer contains 60 to 85 mass % of the aromatic vinyl monomer unit, and 40 to 15 mass % of the vinyl cyanide monomer unit.

6. The fiber for artificial hair of claim 4 , wherein the aromatic vinyl monomer unit is derived from styrene, and the vinyl cyanide monomer unit is derived from acrylonitrile.

7. The fiber for artificial hair of claim 1 , wherein with respect to 100 parts by mass of sum of the vinyl chloride based resin and the vinyl based copolymer, an antistatic agent is contained by 0.01 to 1 parts by mass, a hydrotalcite based complex heat stabilizer is contained by 0.1 to 5.0 parts by mass, an epoxidized oil is contained by 0.2 to 10.0 parts by mass, and an ester based lubricant is contained by 0.2 to 5.0 parts by mass.

8. A hair decorating product comprising the fiber for artificial hair of claim 1 .

9. The hair decorating product of claim 8 , wherein the hair decorating product is at least one selected from wig, hairpiece, braid, extension hair, and doll hair.

Assignees

• Denka Company Ltd

Inventors

• Horihata Atsushi
• Kanaoka Masamich
• Takei Atsushi
• Kume Masashi

Classifications

• C08L27/06 Primary

  Homopolymers or copolymers of vinyl chloride · CPC title

• A41G5/004

  Hairpieces, e.g. hair extensions · CPC title

• C08F212/10

  with nitriles · CPC title

• C08F220/14

  Methyl esters {, e.g. methyl (meth)acrylate} · CPC title

• C08L25/12

  with unsaturated nitriles · CPC title