Patent US2424236A successfully refreshed from Google Patents.
US4290768A
Expired / Lapsed
US
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Process for dyeing and printing cellulose fibres
Assignee: Bayer AG
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Filing: 1980-01-07
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Granted: 1981-09-22
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Expires: 2000-01-07
Abstract
Abstract In order to dye and print cellulose fibres, which have been swollen with water-miscible swelling agents, or fibre mixtures containing such cellulose fibres, the fibres are treated with a dyestuff of the general formula <IMAGE> wherein A denotes an optionally substituted anthraquinone radical, which can contain a further fused ring, X denotes oxygen or sulphur, Z denotes a mononuclear or binuclear aryl radical and n denotes 1 or 2, and the dyestuff is fixed by means of a heat treatment.
Inventors
- 👤 Rutger Neeff
- 👤 Robert Kuth
- 👤 Werner Kuhnel
- 👤 Wilhelm Gohrbandt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:34
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/82; D06P3/8204; D06P3/8223; D06P3/8228; D06P3/8233; C; C09; C09B; C09B1/00; C09B1/16; C09B1/20; C09B1/36; C09B1/46; C09B1/50; C09B1/51; C09B1/516; C09B1/56; C09B1/58; C09B1/585; C09B5/00; C09B5/02; D06P3/58; D06P3/60; D06P3/6033; D06P3/6041; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/918
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
Process for dyeing and printing cellulose fibres, or fibre mixtures containing cellulose fibres, which have been swollen with water-miscible swelling agents capable of maintaining the fibres in swollen condition after removal of water and boiling above 150° C., characterized in that the fibres are treated with a dyestuff of the general formula ##STR25## wherein R 5 is hydrogen, a hydroxyl or cyclohexyl group or a phenylamino or benzoylamino group, which can be substituted in the phenyl ring by halogen, C 1 -C 4 -alkyl or C 1 -C 4 -alkoxy, and the dyestuff is fixed by means of a heat treatment.
Claim 2
Dependent Claim
101 words
Process for dyeing and printing cellulose fibres, or fibre mixtures containing cellulose fibres, which have been swollen with water-miscible swelling agents capable of maintaining the fibres in swollen condition after removal of water and boiling above 150° C., characterized in that the fibres are treated with a dyestuff of the general formula ##STR25## wherein R 5 is hydrogen, a hydroxyl or cyclohexyl group or a phenylamino or benzoylamino group, which can be substituted in the phenyl ring by halogen, C 1 -C 4 -alkyl or C 1 -C 4 -alkoxy, and the dyestuff is fixed by means of a heat treatment.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-09-21 | 1985-03-23 | 1985-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-21 | 1989-03-23 | 1989-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-21 | 1993-03-23 | 1993-09-22 | $7700.00 | Window Closed / Lapsed |