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US4737581A
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Phenyl-azo-hydroxynaphthoic acid amide pigments containing at least one carbonamide group
Assignee: Novartis Corp
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Filing: 1985-04-18
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Granted: 1988-04-12
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Expires: 2005-04-18
Abstract
Abstract Azo compounds of the formula I ##STR1## wherein X is --H, --CH 3 , --CF 3 , --NO 2 , --COOR 1 , --NHCOR 2 or --COHN 2 , and R 1 and R 2 are as defined in claim 1, are suitable for pigmenting high-molecular organic material.
Inventors
- 👤 Stefan Hari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:56
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/10; C09B29/18; C09B29/20; C08; C08K; C08K5/00; C08K5/16; C08K5/22; C08K5/23
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
59 words
An azo compound of the formula ##STR7## wherein X is --H, --CH 3 , --CF 3 , --NO 2 , --NHCOR 2 or --CONH 2 , and R 2 is C 1 -C 4 -alkyl, or phenyl which is unsubstituted or substituted by 1 to 3 halogen atoms, by one or two methyl or methoxy groups, or mixtures thereof.
Claim 2
Dependent Claim
59 words
An azo compound of the formula ##STR7## wherein X is --H, --CH 3 , --CF 3 , --NO 2 , --NHCOR 2 or --CONH 2 , and R 2 is C 1 -C 4 -alkyl, or phenyl which is unsubstituted or substituted by 1 to 3 halogen atoms, by one or two methyl or methoxy groups, or mixtures thereof.
Claim 3
Dependent Claim
17 words
An azo compound of the formula ##STR8## wherein X' is --H, --CH 3 or --CONH 2 .
Claim 4
Dependent Claim
17 words
An azo compound of the formula ##STR8## wherein X' is --H, --CH 3 or --CONH 2 .
Claim 5
Dependent Claim
15 words
An azo compound according to claim 2, wherein X' is --H or --CH 3 .
Claim 6
Dependent Claim
11 words
High-molecular organic material containing an azo compound according to claim 1.
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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) | 1991-04-12 | 1991-10-12 | 1992-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-12 | 1995-10-12 | 1996-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-12 | 1999-10-12 | 2000-04-12 | $7700.00 | Window Closed / Lapsed |