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US3928311A
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Novel quaternized heterocyclic monoazo dyes
Assignee: Novartis Corp
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Filing: 1973-03-15
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Granted: 1975-12-23
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Expires: 1993-03-15
Abstract
Abstract The quaternized heterocyclic monoazo dyes having as a diazo component a nitrogen containing cyclic group linked through the azo bridge to an imidazo heterocyclic coupler prepared by quaternization of the intermediate azo dye, are useful as dyes for acyclic, modacrylic and acid-modified polyester textile materials.
Inventors
- 👤 John G Fisher
- 👤 James M Straley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:21
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/34; C09B29/36; C09B44/00; C09B44/10; C09B44/103
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
5 words
A COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND HAVING THE FORMULA
Claim 3
Dependent Claim
9 words
A compound according to claim 1 having the formula
Claim 4
Dependent Claim
20 words
A compound according to claim 2 wherein R4 represents nitro or lower alkylsulfonyl; R2 represents phenyl; and R3 represents hydrogen.
Claim 5
Dependent Claim
9 words
A compound according to claim 1 having the formula
Claim 6
Dependent Claim
22 words
A compound according to claim 4 wherein R5 represents methylsulfonyl, cyano or nitro; R2 represents phenyl; and R3 represents hydrogen or methyl.
Claim 7
Dependent Claim
9 words
A compound according to claim 1 having the formula
Claim 8
Dependent Claim
21 words
A compound according to claim 6 wherein R6 represents methylthio, ethylthio, ethoxycarbonylmethylthio, or methylsulfonyl; R2 represents phenyl; and R3 represents hydrogen.
Claim 9
Dependent Claim
9 words
A compound according to claim 1 having the formula
Claim 10
Dependent Claim
24 words
A compound according to claim 8 wherein R1 represents methyl; R2 represents phenyl; R3 represents hydrogen or methyl; and R7 and R8 represent hydrogen.
Claim 11
Dependent Claim
9 words
A compound according to claim 1 having the formula
Claim 12
Dependent Claim
22 words
A compound according to claim 10 wherein R1 represents methyl; R2 represents phenyl; R9 represents hydrogen or methoxy; and R3 represents hydrogen.
Claim 13
Dependent Claim
9 words
A compound according to claim 1 having the formula
Claim 14
Dependent Claim
17 words
A compound according to claim 12 wherein R1 represents methyl; R2 represents phenyl; and R3 represents hydrogen.
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) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |