US3936435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cationic heterocyclic-azo-heterocyclic compounds from 5-aminoimidazo-(1,2-A)pyridines
Assignee: Novartis Corp
•
Filing: 1974-08-08
•
Granted: 1976-02-03
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Expires: 1994-08-08
Abstract
Abstract Dyestuff having the general formula ##SPC1## Wherein A represents ##SPC2## Wherein Q is ##SPC3## Ar is phenyl or phenyl substituted with chlorine, bromine, lower alkyl or lower alkoxy; R is hydrogen, lower alkyl, phenyl or phenyl substituted with lower alkyl, lower alkoxy, chloro or bromo; R 1 and R 2 are the same or different and each is hydrogen, lower alkyl, benzyl or phenyl; W is lower alkyl or benzyl; X is hydrogen or lower alkyl; Y is hydrogen, lower alkoxycarbonyl, lower alkyl or formyl; and Z is a basic dye anion. These dyes impart bright colorfast orange to red shades to acrylic, modacrylic, acid-modified polyester and acid-modified polyamide fibers.
Inventors
- 👤 Gary T. Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:04
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/34; C09B29/36; C09B44/00; C09B44/10; C09B44/16
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
92 words
Dyestuff having the general formula ##SPC10## wherein A represents ##SPC11## wherein Q is ##SPC12## Ar is phenyl or phenyl substituted with chlorine, bromine, lower alkyl or lower alkoxy; R is hydrogen, lower alkyl, phenyl or phenyl substituted with lower alkyl, lower alkoxy, chloro or bromo; R 1 and R 2 are the same or different and each is hydrogen, lower alkyl, benzyl or phenyl; W is lower alkyl or benzyl; X is hydrogen or lower alkyl; Y is hydrogen, lower alkoxycarbonyl, lower alkyl or formyl; and Z is a basic dye anion.
Claim 2
Dependent Claim
92 words
Dyestuff having the general formula ##SPC10## wherein A represents ##SPC11## wherein Q is ##SPC12## Ar is phenyl or phenyl substituted with chlorine, bromine, lower alkyl or lower alkoxy; R is hydrogen, lower alkyl, phenyl or phenyl substituted with lower alkyl, lower alkoxy, chloro or bromo; R 1 and R 2 are the same or different and each is hydrogen, lower alkyl, benzyl or phenyl; W is lower alkyl or benzyl; X is hydrogen or lower alkyl; Y is hydrogen, lower alkoxycarbonyl, lower alkyl or formyl; and Z is a basic dye anion.
Claim 3
Dependent Claim
38 words
Dyestuff according to claim 1 wherein R is hydrogen or methyl; R 1 and R 2 are methyl, phenyl or benzyl; W is methyl; X is hydrogen or methyl; and Y is methoxycarbonyl, ethoxycarbonyl, methyl, ethyl or formyl.
Claim 4
Dependent Claim
9 words
Dyestuff according to claim 2 having the formula ##SPC13##
Claim 5
Dependent Claim
9 words
Dyestuff according to claim 2 having the formula ##SPC14##
Claim 6
Dependent Claim
9 words
Dyestuff according to claim 2 having the formula ##SPC15##
Claim 7
Dependent Claim
9 words
Dyestuff according to claim 2 having the formula ##SPC16##
Claim 8
Dependent Claim
9 words
Dyestuff according to claim 2 having the formula ##SPC17##
Claim 9
Dependent Claim
9 words
Dyestuff according to claim 2 having the formula ##SPC18##
Claim 10
Dependent Claim
9 words
Dyestuff according to claim 2 having the formula ##SPC19##
Claim 11
Dependent Claim
9 words
Dyestuff according to claim 2 having the formula ##SPC20##
Claim 12
Dependent Claim
9 words
Dyestuff according to claim 2 having the formula ##SPC21##
References Cited (Backward Citations)
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US3167537A
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DE1234891B
Cited
US3420813A
Cited
FR1541566A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-02 | 1979-08-04 | 1980-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-02 | 1983-08-04 | 1984-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-02 | 1987-08-04 | 1988-02-03 | $7700.00 | Window Closed / Lapsed |