US4681791A
Expired / Lapsed
US
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Thermochromic textile material
Assignee: Pilot Ink Co Ltd
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Filing: 1986-01-30
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Granted: 1987-07-21
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Expires: 2006-01-30
Abstract
Abstract A textile material in the form of fiber, raw stock, yarn or fabric, which comprises fibers each of which is coated with a thermochromic layer containing a thermochromic pigment having a particle size satisfying the formula: <IMAGE> wherein r represents a particle size of a pigment; D represents fineness (denier) of a fiber; and d represents a density (g/cm3) of a fiber. The textile material can undergo reversible color change in a wide variety of colors and can be applied to any kind of textile products.
Inventors
- 👤 Yutaka Shibahashi
- 👤 Norikazu Nakasuji
- 👤 Takashi Kataoka
- 👤 Hiroshi Inagaki
- 👤 Tutomu Kito
- 👤 Masaharu Ozaki
- 👤 Nobuaki Matunami
- 👤 Naoya Ishimura
- 👤 Katuyuki Fujita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:39
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/02; B32B5/022; B32B27/00; B32B27/12; B32B27/18; B32B27/20; B32B5/024; B32B5/026; B32B7/00; B32B7/04; B32B7/12; B41; B41M; B41M5/00; B41M5/26; B41M5/28; B41M5/287; D; D05; D05C; D05C17/00; D06; D06P; D06P1/00; D06P1/004; D06P1/44; D06P5/00; G; G01; G01K; G01K11/00; G01K11/12; G01K11/16; B32B2250/00; B32B2250/20; B32B2305/00; B32B2305/10; B32B2305/18; B32B2305/186; B32B2305/188; B32B2305/20; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23986; Y10T428/24; Y10T428/24802; Y10T428/2481; Y10T428/24893; Y10T428/24901; Y10T428/29; Y10T428/2913; Y10T428/2927; Y10T442/00; Y10T442/30; Y10T442/3049; Y10T442/40; Y10T442/425; Y10T442/60; Y10T442/603
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
143 words
A thermochromic textile materaial comprising a textile material composed of a plurality of fibers coated with a thermochromic layer containing a binder and a thermochromic pigment comprising an electron-donative, color former, an electron-accepting developer and a color-changeable controlling agent, wherein each of the fibers is coated with the thermochromic layer containing the thermochromic pigment having a particle size satisfying the formula: 0.01≦r≦10√D/d wherein r represents the particle size of the pigment in μm; D represents the fineness of the fiber in denier; and d represents the density of the fibers in g/cm 3 , in which said thermochromic layer is coated to a coverage of from 3 to 90% by weight based on the fibers on a dry basis, and said composition is present in an amount of from 5 to 80% by weight based on the thermochromic layer on a dry basis.
Claim 2
Dependent Claim
143 words
A thermochromic textile materaial comprising a textile material composed of a plurality of fibers coated with a thermochromic layer containing a binder and a thermochromic pigment comprising an electron-donative, color former, an electron-accepting developer and a color-changeable controlling agent, wherein each of the fibers is coated with the thermochromic layer containing the thermochromic pigment having a particle size satisfying the formula: 0.01≦r≦10√D/d wherein r represents the particle size of the pigment in μm; D represents the fineness of the fiber in denier; and d represents the density of the fibers in g/cm 3 , in which said thermochromic layer is coated to a coverage of from 3 to 90% by weight based on the fibers on a dry basis, and said composition is present in an amount of from 5 to 80% by weight based on the thermochromic layer on a dry basis.
Claim 3
Dependent Claim
32 words
A textile material as claimed in claim 1, wherein said pigment is present in an amount of from 10 to 60% by weight based on the thermochromic layer on a dry basis.
Claim 4
Dependent Claim
32 words
A textile material as claimed in claim 1, wherein said thermochromic layer is coated to a coverage of from 5 to 70% by weight based on the fiber on a dry basis.
Claim 5
Dependent Claim
22 words
A textile material as claimed in claim 1, wherein said material is in the form of fiber, raw stock, yarn or fabric.
Claim 6
Dependent Claim
21 words
A textile material as claimed in claim 4, wherein said fabric is woven fabric, non-woven fabric, knitted fabric or pile fabric.
Claim 7
Dependent Claim
38 words
A textile material as claimed in claim 1, wherein said material comprises blended fibers composed of said fibers each of which is coated with the thermochromic layer and uncoated fibers at a weight ratio of 1:0.01 to 20.
Claim 8
Dependent Claim
16 words
A textile material as claimed in claim 6, wherein said weight ratio is 1:0.1 to 10.
Claim 9
Dependent Claim
17 words
A textile material as claimed in claim 1, wherein said thermochromic layer further contains a colored component.
Claim 10
Dependent Claim
22 words
A thermochromic textile material containing the thermochromic pigment satisfying the formula of claim 1, whereby uniform distribution of thermochromic pigments is achieved.
Claim 11
Dependent Claim
19 words
A thermochromic textile material containing a pigment as claimed in claim 9, whereby uniform thermochromic color change is achieved.
References Cited (Backward Citations)
US4028118A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-20 | 1991-01-19 | 1991-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-20 | 1995-01-19 | 1995-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-20 | 1999-01-19 | 1999-07-21 | $7700.00 | Window Closed / Lapsed |