US5298035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing thermosensitive fibrous structure
Assignee: Dainichiseika Color and Chemicals Mfg Co Ltd
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Filing: 1992-12-24
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Granted: 1994-03-29
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Expires: 2012-12-24
Abstract
Abstract A process for preparing a thermosensitive fibrous structure which includes adding a fibrous substrate mainly composed of cellulosic fiber, microcapsules including a thermochromic material, a cationic surfactant and a nonionic surfactant to a dye bath maintained at a temperature of not higher than 90° C. and then adding an agent for imparting exhaustion property in the bath at a pH not more than 7, thereby causing the fibrous substrate to exhaust the microcapsules from the bath. According to this process, there can be obtained a thermosensitive fibrous structure wherein microcapsules are almost completely exhausted and uniformly provided.
Inventors
- 👤 Masao Okamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:27
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/46; C; C09; C09B; C09B67/00; C09B67/0097; D06M13/325; D06M13/368; D06M13/372; D06M15/00; D06M15/19; D06M15/37; D06M15/53; D06M15/564; D06M15/643; D06M15/6436; D06M23/00; D06M23/12; D06P; D06P1/00; D06P1/004; D06P1/0096; Y; Y10; Y10S; Y10S8/00; Y10S8/906; Y10S8/916; Y10S8/918
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
83 words
A process for preparing a colored thermosensitive fibrous structure which comprises: adding a fibrous substrate mainly composed of cellulosic fiber, microcapsules containing a thermochromic material, a cationic surfactant and a nonionic surfactant to a dye bath maintained at a temperature of not higher than 90° C. and then adding an amino-modified polyorganosiloxane exhaustion agent to said bath at a pH not more than 7, thereby causing said fibrous substrate to exhaust said microcapsules from said bath, and obtaining said colored thermosensitive fibrous structure.
Claim 2
Dependent Claim
83 words
A process for preparing a colored thermosensitive fibrous structure which comprises: adding a fibrous substrate mainly composed of cellulosic fiber, microcapsules containing a thermochromic material, a cationic surfactant and a nonionic surfactant to a dye bath maintained at a temperature of not higher than 90° C. and then adding an amino-modified polyorganosiloxane exhaustion agent to said bath at a pH not more than 7, thereby causing said fibrous substrate to exhaust said microcapsules from said bath, and obtaining said colored thermosensitive fibrous structure.
Claim 3
Dependent Claim
54 words
The process of claim 1, which comprises heating said bath to which water, said fibrous substrate and said cationic and nonionic surfactants have been added, to a temperature of 50° to 80° C., adding said microcapsules thereto, adjusting the pH of said bath to not more than 7, and adding thereto said exhaustion agent.
Claim 4
Dependent Claim
25 words
The process of claim 1, further comprising applying an urethane resin or a derivative thereof to said fibrous substrate after said microcapsules have been exhausted.
Claim 5
Dependent Claim
21 words
The process of claim 1, further comprising applying an ultraviolet adsorbent to said fibrous substrate after said microcapsules have been exhausted.
References Cited (Backward Citations)
US4028118A
Cited
US4118538A
Cited
JPH01280080A
Cited
JPH03174073A
Cited
JPH03193979A
Cited
EP0480162A1
Cited
US5221288A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-03-28 | 1997-09-27 | 1998-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-03-28 | 2001-09-27 | 2002-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-03-28 | 2005-09-27 | 2006-03-29 | $7700.00 | Window Closed / Lapsed |