US3619112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for coloring cellulose acetate, polyamide and polyester textile materials with water-insoluble disazo dyestuffs
Assignee: Imperial Chemical Industries Ltd
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Filing: 1969-12-01
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Granted: 1971-11-09
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Expires: 1989-12-01
Abstract
Abstract Process for coloring cellulose acetate, polyamide and polyester textile materials with water-insoluble disazo dyestuffs of the formula: WHEREIN E is a residue of a coupling component of the phenol, naphthol, 5-pyrazolone or acylacetarylamide series or a group of the formula: T1 and T2 each independently represent a hydrogen atom, an optionally substituted hydrocarbon radical or a cyano, acyl, carboxylic acid ester or amide group, Z is a hydrogen atom or an optionally substituted hydrocarbon radical, and the benzene ring B can contain substituents.
Inventors
- 👤 Alistair Howard Berrie
- 👤 Nigel Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:24
CPC Classifications
C; C09; C09B; C09B35/00; C09B35/02; C09B35/021; C09B35/03; C09B35/031; C09B35/039; C09B35/04; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/921; Y10S8/922; Y10S8/924
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
Process as claimed in claim 1 wherein the dyestuff is of the formula:
Claim 2
Dependent Claim
13 words
Process as claimed in claim 1 wherein the dyestuff is of the formula:
References Cited (Backward Citations)
US3487066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |