US4058515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallized phenyl-azo-naphthol compounds
Assignee: Novartis Corp
•
Filing: 1974-05-31
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Granted: 1977-11-15
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Expires: 1994-05-31
Abstract
Abstract Metallized azo dyes of the formula ##STR1## wherein A is a sulfonyl, sulfonamido or carboxamido group, D is the residue of a phenol or naphthol, E is the residue of acetoacetanilide, a phenyl or naphthyl pyrazolone or the residue of a naphthol and M is a cation. The dyes are suitable for dyeing natural and synthetic polyamides, demonstrating good all-around fastness properties.
Inventors
- 👤 Hans Alfred Stingl
- 👤 John Elliott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:35
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/02; C09B45/14; C09B45/18
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
89 words
A compound of the formula ##STR32## wherein B is benzyl or -NRR 1 , wherein R is selected from the group consisting of hydrogen, methyl, ethyl, β-cyanoethyl, β-hydroxyethyl, β-hydroxypropyl and γ-hydroxypropyl; and R 1 is C 2-8 -alkyl, phenyl or phenyl carrying up to two substituents selected from the group consisting of methyl, methoxy, ethoxy and chlorine; M is hydrogen, NH 4 or sodium; and the positions of the oxygen bridge, the azo linkage and the sulfonic acid group on the naphthol residue is either 1-2-4 or 2-1-6, respectively.
Claim 2
Dependent Claim
89 words
A compound of the formula ##STR32## wherein B is benzyl or -NRR 1 , wherein R is selected from the group consisting of hydrogen, methyl, ethyl, β-cyanoethyl, β-hydroxyethyl, β-hydroxypropyl and γ-hydroxypropyl; and R 1 is C 2-8 -alkyl, phenyl or phenyl carrying up to two substituents selected from the group consisting of methyl, methoxy, ethoxy and chlorine; M is hydrogen, NH 4 or sodium; and the positions of the oxygen bridge, the azo linkage and the sulfonic acid group on the naphthol residue is either 1-2-4 or 2-1-6, respectively.
Claim 3
Dependent Claim
9 words
A compound of claim 1 of the formula ##STR33##
Claim 4
Dependent Claim
9 words
A compound of claim 1 of the formula ##STR34##
Claim 5
Dependent Claim
9 words
A compound of claim 1 of the formula ##STR35##
Claim 6
Dependent Claim
9 words
A compound of claim 1 of the formula ##STR36##
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) | 1980-11-14 | 1981-05-16 | 1981-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-14 | 1985-05-16 | 1985-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-14 | 1989-05-16 | 1989-11-15 | $7700.00 | Window Closed / Lapsed |