US4126609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azo dyestuff with a fiber-reactive group attached to a naphthalene sulphonic acid component
Assignee: Bayer AG
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Filing: 1973-07-03
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Granted: 1978-11-21
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Expires: 1993-07-03
Abstract
Abstract Azo reactive dyestuffs which in the acid form correspond to the formula ##STR1## wherein R denotes hydrogen or lower alkyl, W denotes a direct bond or a bridge member, Z denotes a reactive group and A denotes the radical of a coupling component, and their use for the dyeing and printing of materials containing hydroxyl groups or amide groups as well as for the wash-fast dyeing and printing of natural or regenerated cellulose.
Inventors
- 👤 Horst Jager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:52
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/002; C09B62/006; C09B62/008
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
57 words
Azo reactive dyestuff which in the acid form corresponds to the formula ##STR23## wherein Z is a fiber-reactive group capable of reacting under dyeing or printing conditions with hydroxy or amino to form a covalent bond; A is the radical of a coupling component; W is a direct bond, ##STR24## and R is hydrogen or lower alkyl.
Claim 2
Dependent Claim
57 words
Azo reactive dyestuff which in the acid form corresponds to the formula ##STR23## wherein Z is a fiber-reactive group capable of reacting under dyeing or printing conditions with hydroxy or amino to form a covalent bond; A is the radical of a coupling component; W is a direct bond, ##STR24## and R is hydrogen or lower alkyl.
Claim 3
Dependent Claim
29 words
Azo reactive dyestuff of claim 1 which in the acid form corresponds to the formula ##STR25## wherein A, R, W and Z have the meaning indicated in claim 1.
Claim 4
Dependent Claim
32 words
Azo reactive dyestuff of claim 1 which in the acid form corresponds to the formula ##STR26## wherein Z has the meaning indicated in claim 1 and n represents 1, 2 or 3.
Claim 5
Dependent Claim
56 words
Azo reactive dyestuff of claim 1 which in the acid form corresponds to the formula ##STR27## wherein Z has the meaning indicated in claim 1, E represents an alkyl, phenyl or naphthyl radical which is substituted by at least one sulphonic acid, M represents methyl, carboxyl or carbonamide and G represents OH or NH 2 .
Claim 6
Dependent Claim
67 words
Azo reactive dyestuff of claim 1 which in the acid form corresponds to the formula ##STR28## u and v are hydrogen or sulphonic acid, and acyl is (C 1 -C 4 -alkyl)carbonyl, (C 1 -C 4 -alkyl) sulphonyl, phenylcarbonyl, phenylsulphonyl, or either of the last two mentioned radicals wherein the phenyl portion is substituted by chloro, C 1 -C 4 -alkyl, or C 1 -C 4 -alkoxy.
Claim 7
Dependent Claim
40 words
Azo reactive dyestuff of claim 1 which in the acid form corresponds to the formula ##STR29## wherein u and v are hydrogen or sulpho; and D is the radical of a diazo component of the benzene series or naphthalene series.
References Cited (Backward Citations)
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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) | 1981-11-20 | 1982-05-22 | 1982-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-20 | 1986-05-22 | 1986-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-20 | 1990-05-22 | 1990-11-21 | $7700.00 | Window Closed / Lapsed |