US4176229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Basic dyes
Assignee: BASF SE
•
Filing: 1978-08-02
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Granted: 1979-11-27
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Expires: 1998-08-02
Abstract
Abstract Dyes of the general formula I <IMAGE> where A(-) is an anion, B is methyl, ethyl, benzyl or beta -hydroxyethyl, n is 1 or 2, R is alkyl of 1 to 4 carbon atoms, X is hydrogen, methoxy, ethoxy or chlorine and Z is <IMAGE> The dyes of the formula I give very fast dyeings on anionically modified fibers.
Inventors
- 👤 Hellmut Kast
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:47
CPC Classifications
C; C09; C09B; C09B23/00; C09B23/16; C09B23/162; C09B23/164
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
45 words
A basic dye of the general formula ##STR12## where A.sup.⊖ is an anion, B is methyl, ethyl, benzyl or β-hydroxyethyl, n is 1 or 2, R is alkyl of 1 to 4 carbon atoms, X is hydrogen, methoxy, ethoxy or chlorine and Z is ##STR13##
Claim 2
Dependent Claim
45 words
A basic dye of the general formula ##STR12## where A.sup.⊖ is an anion, B is methyl, ethyl, benzyl or β-hydroxyethyl, n is 1 or 2, R is alkyl of 1 to 4 carbon atoms, X is hydrogen, methoxy, ethoxy or chlorine and Z is ##STR13##
Claim 3
Dependent Claim
21 words
A dye as claimed in claim 1, of the formula ##STR14## where A.sup.⊖, n, R and X have the stated meanings.
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) | 1982-11-26 | 1983-05-28 | 1983-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-26 | 1987-05-28 | 1987-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-26 | 1991-05-28 | 1991-11-27 | $7700.00 | Window Closed / Lapsed |