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US4053464A
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Disazo pigments containing ether substituted alkoxy carbonyl groups
Assignee: Novartis Corp
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Filing: 1974-06-17
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Granted: 1977-10-11
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Expires: 1994-06-17
Abstract
Abstract New disazo pigments of the formula ##STR1## wherein R 1 denotes a benzene radical, R 2 denotes an aromatic radical, X and X' denote hydrogen or chlorine atoms, alkyl or alkoxy groups containing 1-6 carbon atoms, or aryloxy groups, R 3 denotes an alkyl group containing 1-6 carbon atoms, or an aryl radical, and Z denotes a hydrogen or halogen atom, an alkoxy group containing 1-4 carbon atoms, or a nitro or nitrile group which are useful for pigmenting high molecular organic material.
Inventors
- 👤 Armand Roueche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:04
CPC Classifications
C; C09; C09B; C09B43/00; C09B43/32; C09B43/38; C09B33/00; C09B33/02; C09B33/147
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
Disazo pigment of the formula ##STR23##
Claim 2
Dependent Claim
6 words
Disazo pigment of the formula ##STR23##
References Cited (Backward Citations)
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Cited
US2888453A
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Cited
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US3691149A
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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) | 1980-10-10 | 1981-04-11 | 1981-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-10 | 1985-04-11 | 1985-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-10 | 1989-04-11 | 1989-10-11 | $7700.00 | Window Closed / Lapsed |