US4968783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amino-fluoro-S-triazine disazo dyes of the H-acid series
Assignee: Huntsman International LLC
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Filing: 1989-01-19
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Granted: 1990-11-06
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Expires: 2009-01-19
Abstract
Abstract Reactive dyes useful for dyeing natural and synthetic fibers of the formula ##STR1## in which D 1 is a benzene or naphthalene radical, which can be substituted, D 2 is a benzene radical, which can be substituted, R 1 is hydrogen or C 1-4 -alkyl, the bridge member --N(R 1 )-- is bonded to a ring carbon atom of D 2 , R 2 is hydrogen or C 1-4 -alkyl, which can be substituted, and R 3 is hydrogen or substituted or unsubstituted alkyl, cycloalkyl, aralkyl or aryl.
Inventors
- 👤 Karl Seitz
- 👤 Gert Hegar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:22
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/02; C09B62/04; C09B62/08; C09B62/09
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
27 words
A reactive dye of the formula ##STR28## in which R 2 is hydrogen, and R 3 is phenyl, which is unsubstituted or substituted by chlorine or sulfo.
Claim 2
Dependent Claim
27 words
A reactive dye of the formula ##STR28## in which R 2 is hydrogen, and R 3 is phenyl, which is unsubstituted or substituted by chlorine or sulfo.
Claim 3
Dependent Claim
11 words
The reactive dye according to claim 1 of the formula ##STR29##
References Cited (Backward Citations)
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US3711460A
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US4115378A
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US3663526A
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Cited
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Cited
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Cited
DE2705681A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-11-05 | 1994-05-07 | 1994-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-11-05 | 1998-05-07 | 1998-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-11-05 | 2002-05-07 | 2002-11-06 | $7700.00 | Window Closed / Lapsed |