US4332585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic fur and process for preparation thereof
Assignee: Teijin Ltd
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Filing: 1980-08-20
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Granted: 1982-06-01
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Expires: 2000-08-20
Abstract
Abstract A synthetic fur closely resembling a natural fur comprises relatively long and thick guard hair-like raised synthetic fibers, each having a transverse cross-section wherein at least one constricted part is formed, and underfur-like raised synthetic fibers, each having a rate of dissolution in a solvent or of hydrolysis with a hydrolyzing agent higher than that of said guard hair-like raised fibers, and a length and fineness less than those of said guard hair-like raised fibers. The synthetic fur is prepared by applying a viscous treating liquid containing a solvent or hydrolyzing agent to a raised surface of a fabric comprising relatively thick raised synthetic fibers, each having a transverse cross-section wherein at least one constricted part is formed, and relatively fine raised synthetic fibers, each having a rate of dissolution in the solvent or of hydrolysis with the hydrolyzing agent higher than that of said relatively thick raised fibers.
Inventors
- 👤 Norihiro Minemura
- 👤 Manabu Toyao
- 👤 Tsukasa Kobayashi
- 👤 Mikio Tashiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:01
CPC Classifications
A; A41; A41D; A41D5/00; A41D5/003; D; D01; D01D; D01D5/00; D01D5/24; D01D5/253; D04; D04B; D04B1/00; D04B1/02; D04B1/025; D10; D10B; D10B2501/00; D10B2501/04; D10B2501/044; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23929; Y10T428/23936; Y10T428/23993; Y10T428/29; Y10T428/2904; Y10T428/2909; Y10T428/2913; Y10T428/2922; Y10T428/2924; Y10T428/2925; Y10T428/2973; Y10T428/2975; Y10T428/2976
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
93 words
A process for preparing a synthetic fur comprising applying a viscous treating liquid containing a solvent or hydrolyzing agent and having a viscosity of 1,000 to 15,000 C.P. to a raised surface of a fabric comprising relatively thick raised synthetic fibers, each having a transverse cross-section wherein at least one constricted part is formed, and relatively fine raised synthetic fibers, each having a rate of dissolution in the solvent or of hydrolysis with the hydrolyzing agent higher than that of said relatively thick raised synthetic fibers, to produce raised fibers different in length.
Claim 2
Dependent Claim
93 words
A process for preparing a synthetic fur comprising applying a viscous treating liquid containing a solvent or hydrolyzing agent and having a viscosity of 1,000 to 15,000 C.P. to a raised surface of a fabric comprising relatively thick raised synthetic fibers, each having a transverse cross-section wherein at least one constricted part is formed, and relatively fine raised synthetic fibers, each having a rate of dissolution in the solvent or of hydrolysis with the hydrolyzing agent higher than that of said relatively thick raised synthetic fibers, to produce raised fibers different in length.
Claim 3
Dependent Claim
47 words
A process as claimed in claim 1, wherein the end portions of a majority of said relatively thick raised synthetic fibers are divided into plural fibers at the constricted part or parts in each of their transverse cross-sections by the action of the solvent or hydrolyzing agent.
Claim 4
Dependent Claim
27 words
A process as claimed in claim 1, wherein said relatively thick raised synthetic fibers are made from polymers selected from the group consisting of polyesters and polyamides.
Claim 5
Dependent Claim
32 words
A process as claimed in claim 1, 2, or 3, wherein said fabric is positioned with said raised synthetic fibers upwardly and said treating liquid is then applied to said raised surface.
Claim 6
Dependent Claim
23 words
A process as claimed in claim 1, 2, or 3, further comprising subjecting said fabric to heat treatment after applying said treating liquid.
Claim 7
Dependent Claim
45 words
A process as claimed in claim 5 wherein said heat treating step is conducted in dry air at 130°-200° C. for 30 seconds to 20 minutes, in saturated steam at 100°-130° C. for 5-40 minutes, or in superheated steam at 130°-200° C. for 5-30 minutes.
Claim 8
Dependent Claim
22 words
A process as claimed in claim 6, wherein said heat treatment step is in saturated steam at 100°-130° C. for 5-40 minutes.
Claim 9
Dependent Claim
46 words
A process as claimed in claim 1, 2, or 3, wherein said treating liquid contains a thickener selected from the group consisting of wheat starch, rice bran, tragacanth gum, sodium alginate, locust bean gum, methyl cellulose, carboxy methyl cellulose, polyvinyl alcohol, polyvinyl acetate, and polysodium acrylate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-31 | 1985-11-30 | 1986-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-31 | 1989-11-30 | 1990-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-31 | 1993-11-30 | 1994-06-01 | $7700.00 | Window Closed / Lapsed |