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US4049704A
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2-Amino-1-sulfonaphthalene containing acylaminomethyl substituent
Assignee: Bayer AG
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Filing: 1976-02-09
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Granted: 1977-09-20
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Expires: 1996-02-09
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
2026-11-03 05:45
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/002; C09B62/006
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
58 words
Aminonaphthalenesulphonic acid, which in the form of the free acid, corresponds to the formula ##STR23## wherein R is hydrogen or lower alkyl; and W is a direct bond or a bridge member selected from the group consisting of ##STR24## in which the N atoms of the bridge member is attached to --CH 2 -- group in the formula.
Claim 2
Dependent Claim
58 words
Aminonaphthalenesulphonic acid, which in the form of the free acid, corresponds to the formula ##STR23## wherein R is hydrogen or lower alkyl; and W is a direct bond or a bridge member selected from the group consisting of ##STR24## in which the N atoms of the bridge member is attached to --CH 2 -- group in the formula.
Claim 3
Dependent Claim
9 words
Aminonaphthalenesulphonic acid of claim 1 having the formula ##STR25##
Claim 4
Dependent Claim
10 words
Aminonaphthalenesulphonic acid of claim 2 in which R is H.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-19 | 1981-03-21 | 1981-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-19 | 1985-03-21 | 1985-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-19 | 1989-03-21 | 1989-09-20 | $7700.00 | Window Closed / Lapsed |