US4065481A
Expired / Lapsed
US
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1:1-Azomethine-metal-complex dyestuffs
Assignee: Novartis Corp
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Filing: 1975-12-12
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Granted: 1977-12-27
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Expires: 1995-12-12
Abstract
Abstract 1:1-Metal complexes of azomethines of the formula I ##STR1## wherein A and B are isocyclic or heterocyclic aromatic radicals, with however only one of the radicals A and B being a benzene ring, R represents a hydrogen atom, an alkyl group containing 1 to 6 carbon atoms, or an aryl radical, and the complexing metal ions are bivalent cations of the transition metals, zinc ions or cadmium ions which are useful for pigmenting high molecular organic material.
Inventors
- 👤 Francois L'Eplattenier
- 👤 Laurent Vuitel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:06
CPC Classifications
C; C09; C09B; C09B57/00; C09B57/10; C09B23/00; C09B23/16; C09B23/162; C09B23/166; C09B26/00; C09B26/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
63 words
1:1-Metal complexes of azomethines of the formula I ##STR44## wherein A and B are isocyclic aromatic groups, with however only one of the groups A and B being a benzene ring, R represents a hydrogen atom, an alkyl group containing 1 to 6 carbon atoms, or an aryl group, and the complexing metal ions are bivalent cations of zinc, copper, nickel, colialtor cadmium.
Claim 2
Dependent Claim
63 words
1:1-Metal complexes of azomethines of the formula I ##STR44## wherein A and B are isocyclic aromatic groups, with however only one of the groups A and B being a benzene ring, R represents a hydrogen atom, an alkyl group containing 1 to 6 carbon atoms, or an aryl group, and the complexing metal ions are bivalent cations of zinc, copper, nickel, colialtor cadmium.
Claim 3
Dependent Claim
72 words
1:1-Azomethine metal complexes according to claim 1, characterised in that R represents a hydrogen atom or a methyl group, A or B represents a benzene group, and A and B represent naphthalene, groups, with the groups A and B being able to be substituted by halogen atoms, hydroxy, alkyl, aryl, alkoxy, nitro, cyano, carboxy, alkoxycarbonyl or carbamoyl groups, and the complexing metal ions being bivalent ions of cobalt, nickel, zinc or copper.
Claim 4
Dependent Claim
10 words
1:1-Azomethine-copper-II-complex, characterised by an azomethine according to the claim 1.
Claim 5
Dependent Claim
59 words
1:1-Azomethine-copper-II-complexes according to claim 3, characterised by an azomethine of the formula II ##STR45## wherein X, Y and Z represent hydrogen atoms, chlorine atoms or bromine atoms, hydroxy groups, alkyl or alkoxy radicals containing 1 - 4 carbon atoms, nitro or cyano groups, carboxy or carbamoyl groups, alkoxycarbonyl or alkyl or arylcarbamoyl groups containing 2 - 12 carbon atoms.
Claim 6
Dependent Claim
13 words
1:1Azomethine-copper-II-complex according to claim 4, characterised by an azomethine of the formula ##STR46##
Claim 7
Dependent Claim
13 words
1:1-Azomethine-copper-II-complex according to claim 3, characterised by an azomethine of the formula ##STR47##
References Cited (Backward Citations)
US3845014A
Cited
US3894083A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-26 | 1981-06-27 | 1981-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-26 | 1985-06-27 | 1985-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-26 | 1989-06-27 | 1989-12-27 | $7700.00 | Window Closed / Lapsed |