US3803121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copper complex reactive monochloro-s-triazine azo dyestuff
Assignee: Imperial Chemical Industries Ltd
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Filing: 1972-01-14
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Granted: 1974-04-09
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Expires: 1992-01-14
Abstract
Abstract A DISAZO DYESTUFF OF THE FORMULA 1-((-)O-),2-((2-((-)O-),3-R1,5-R2-PHENYL)-N=N-),3-(HO3S-), 5-Z,6-Y,8-X-NAPHTHALENE CU(++) WHEREIN R1 IS H, CI, NO2 OR SO3H AND R2 IS CI, NO2 OR SO3H, AT LEAST OONE OF R1 AND R2 BEING SO3H, AND EITHER X IS H, Z IS SO3 AND Y IS (((2-X1,3-(R4-N=N-),5-X2-PHENYL)-N(-R3)-),CL-1,3,5- TRIAZINYL)-NH- WHEREIN R3 IS H OR CH3, R4 IS 4''-NITRO-2,2''-DISULPHOSTILBENE-4-YL OR DISULPHONAPHTHYL, X1 IS H, CH3 OR OCH3 AND X2 IS H, CH3, OCH3, NHCOCH3 OR NHCONH2, OR X IS FORMULA 2, ONE OF Y AND Z IS H AND THE OTHER IS SO3H. THESE DYES ARE BROWN REACTIVE DYES OF VERY GOOD LIGHT FASTNESS AND CAN BE USED TO DYE CELLULOSE TEXTILE MATERIALS.
Inventors
- 👤 P Gregory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:29
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/02; C09B62/04; C09B62/08; C09B62/095
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-08 | 1977-10-08 | 1978-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-08 | 1981-10-08 | 1982-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-08 | 1985-10-08 | 1986-04-09 | $7700.00 | Window Closed / Lapsed |