US3157458A
Expired / Lapsed
US
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Process for dyeing woolen textiles with metal complex azo dyestuffs
Assignee: Imperial Chemical Industries Ltd
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Filing: 1962-05-04
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Granted: 1964-11-17
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Expires: 1982-05-04
Abstract
No abstract record available.
Inventors
- 👤 Dawson Timothy Leslie
- 👤 Graham John Glover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:43
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/02; D06P3/04; D06P3/14; D06P3/148; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A PROCESS FOR DYEING WOOLEN TEXTILE MATERIALS WHICH COMPRISES TREATING THE WOLLEN TEXTILE MATERIAL WITH AN AQUEOUS SOLUTION CONTAINING: (1) A MEMBER SELECTED FROM THE CLASS CONSISTING OF 1:2CHROMIUM AND COBALT COMPLEXES OF AZO DYESTUFFS, FREE FROM SULPHONIC ACID AND NON-CHELATED CARBOXYLIC ACID GROUPS, AND CONTAINING A MEMBER SELECTED FROM THE GROUP CONSISTING OF REACTIVE HALOGEN ATOMS AND REACTIVE GROUPS CAPABLE OF REACTING WITH ATHE WOOLEN TEXTILE MATERIAL IN THE DYEING REACTION TO FORM A CHEMICAL BOND THEREIN; (2) AN ANIONIC SURFACE-ACTIVE AGENT; AND (3) A CONDENSATE OF ETHYLENE OXIDE WITH AN ALIPHATIC AMINE.
Claim 2
Dependent Claim
94 words
A PROCESS FOR DYEING WOOLEN TEXTILE MATERIALS WHICH COMPRISES TREATING THE WOLLEN TEXTILE MATERIAL WITH AN AQUEOUS SOLUTION CONTAINING: (1) A MEMBER SELECTED FROM THE CLASS CONSISTING OF 1:2CHROMIUM AND COBALT COMPLEXES OF AZO DYESTUFFS, FREE FROM SULPHONIC ACID AND NON-CHELATED CARBOXYLIC ACID GROUPS, AND CONTAINING A MEMBER SELECTED FROM THE GROUP CONSISTING OF REACTIVE HALOGEN ATOMS AND REACTIVE GROUPS CAPABLE OF REACTING WITH ATHE WOOLEN TEXTILE MATERIAL IN THE DYEING REACTION TO FORM A CHEMICAL BOND THEREIN; (2) AN ANIONIC SURFACE-ACTIVE AGENT; AND (3) A CONDENSATE OF ETHYLENE OXIDE WITH AN ALIPHATIC AMINE.
References Cited (Backward Citations)
US3071427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |