Patent US3786822A successfully refreshed from Google Patents.
US3786822A
Expired / Lapsed
US
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Artificial hair articles and process for the preparation thereof
Assignee: Toa Boshoku Co Ltd
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Filing: 1972-04-03
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Granted: 1974-01-22
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Expires: 1992-04-03
Abstract
Abstract Artificial hair article made of filamentary shaped strands of a fiber-forming, thermoplastic synthetic polymer containing as uniformly dispersed therein and incorporated therewith, particles of cross-linked copolymer of 0.01 to 2 microns in size which do not decompose at the melting point of the fiber-forming, thermoplastic synthetic polymer, in an amount of 0.1 to 10 percent by weight, the strands having a uniformly distributed fine slit-like grooved pattern along their entire length.
Inventors
- 👤 N Kimura
- 👤 Y Mizutani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:38
CPC Classifications
A; A41; A41G; A41G3/00; A41G3/0083; D; D01; D01F; D01F1/00; D01F1/02; D01F1/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
35 words
The strands of claim 1 wherein the diameter of said strands is within the range of 0.08 - 0.12 mm, said thermoplastic polymer containing 0.5 - 4 percent by weight of said cross-linked copolymer particles.
Claim 2
Dependent Claim
18 words
The artificial hair strands of claim 1 wherein said particles of a cross-linked copolymer are of spheroidal shape.
Claim 3
Dependent Claim
27 words
The artificial hair strands of claim 1 wherein said fiber forming synthetic thermoplastic polymer is selected from polyolefins, polyesters, polyamides, polyvinyl chloride, polyacylonitrile, and acrylonitrile-vinyl chloride copolymer.
Claim 4
Dependent Claim
29 words
The artificial hair strands of claim 1 wherein said radically polymerizable di- or tri-ethenically unsaturated cross-linking agent is selected from di-vinyl benzene, di-vinyl toluene, tri-vinyl benzene and di-vinyl sulfone.
Claim 5
Dependent Claim
168 words
An artificial hair article in the form of a fall, hair piece or wig comprising a base element to which are attached a multiplicity of bundles of artificial hair strands, said artificial hair strands consisting essentially of a fiber-forming synthetic thermoplastic polymer, said synthetic thermoplastic polymer containing uniformly dispersed therein and incorporated therewith 0.1 to 10 percent by weight of particles of a cross-linked copolymer of a. at least one radical polymerizable monoethylenically unsaturated monomer selected from the group consisting of styrene, vinyl toluene, methyl vinyl pyridine, methacrylonitrIle, acrylonitrile, methacrylic acid, methacrylic acid alkyl esters, acrylic acid, acrylic acid alkyl esters, vinyl acetate and vinyl chloride, and b. a radical polymerizable di- or tri-ethylenically unsaturated cross-linking agent, said cross-linking agent (b) being present in an amount of 0.5 to 30 percent by weight based on the weight of said cross-linked copolymer, said particles being 0.01 to 2 microns in size, said strands having on the surface thereof, along their entire length, a uniformly distributed fine slit-like grooved pattern.
Claim 6
Dependent Claim
37 words
The artificial hair article of claim 6 wherein the diameter of said strands is within the range of 0.08 - 0.12 mm, said thermoplastic polymer containing 0.5 - 4 percent by weight of said cross-linked copolymer particles.
Claim 7
Dependent Claim
18 words
The artificial hair article of claim 6 wherein said particles of a cross-linked copolymer are of spheroidal shape.
Claim 8
Dependent Claim
26 words
The artificial hair article of claim 6 wherein said fiber-forming synthetic thermoplastic polymer is selected from polyolefins, polyesters, polyamides, polyvinyl chloride, polyacrylonitrile, and acrylonitrile-vinyl chloride copolymer.
Claim 9
Dependent Claim
29 words
The artificial hair article of claim 6 wherein said radically polymerizable di- or tri-ethenically unsaturated cross-linking agent is selected from di-vinyl benzene, di-vinyl toluene, tri-vinyl benzene and di-vinyl sulfone.
References Cited (Backward Citations)
US3301909A
Cited
US3423481A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |