US3791787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for dyeing cellulose fibers
Assignee: Nippon Kayaku Co Ltd
•
Filing: 1972-07-27
•
Granted: 1974-02-12
•
Expires: 1992-07-27
Abstract
Abstract Cyclic alkylene carbonates or inorganic salts containing fluorine are used as reaction promoters in the fixation of reactive dyestuffs (other than those of resin type) to cellulose fibers under nearly neutral conditions.
Inventors
- 👤 Y Yamada
- 👤 T Sotogoshi
- 👤 H Hosoi
- 👤 H Ohno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:46
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/673; D06P1/67333; D06P1/6735; D06P1/64; D06P1/651; D06P1/65106; D06P1/65125; D06P3/00; D06P3/58; D06P3/60; D06P3/66; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/918
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
15 words
A process according to claim 1, wherein said reaction promoter is a cyclic alkylene cArbonate.
Claim 2
Dependent Claim
16 words
A process according to claim 1, wherein said reaction promoter is an inorganic salt containing fluorine.
Claim 3
Dependent Claim
13 words
A process according to claim 2, wherein said reaction promoter is ethylene carbonate.
Claim 4
Dependent Claim
13 words
A process according to claim 3, wherein said reaction promoter is potassium fluoride.
Claim 5
Dependent Claim
13 words
A process according to claim 3, wherein said reaction promoter is sodium fluoride.
Claim 6
Dependent Claim
13 words
A process according to claim 1, wherein said reactive dyestuff contains dihalogeno-s-triazinyl group.
Claim 7
Dependent Claim
13 words
A process according to claim 1, wherein said reactive dyestuff contains monohalogeno-s-triazinyl group.
Claim 8
Dependent Claim
14 words
A process according to claim 1, wherein said reactive dyestuff contains Beta -sulfatoethylsulfonyl group.
Claim 9
Dependent Claim
13 words
A process according to claim 1, wherein said reactive dyestuff contains dihalogenoquinoxalinyl group.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |