US3994872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tertiary-alkylamine salts of metal complex dyestuffs
Assignee: Novartis Corp
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Filing: 1975-02-10
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Granted: 1976-11-30
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Expires: 1995-02-10
Abstract
Abstract New dyestuff salts of the formula ##EQU1## WHEREIN A denotes the radical of an anionic dyestuff, R, R 1 and R.sub. 2 denote alkyl radicals with a total of 10 - 24 carbon atoms and n denotes the number 1 - 4. The dyestuff salts show excellent solubility in organic solvents such as alcohols, ketones and esters. Due to the excellent solubility in organic solvents, the dyestuffs of the instant invention are especially suitable for dyeing solutions of polymers such as polystyrene or polyamides.
Inventors
- 👤 Werner Kuster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:32
CPC Classifications
C; C09; C09B; C09B69/00; C09B69/02; C09B69/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
111 words
A dyestuff salt of the formula ##EQU2## wherein A 1 and A 2 each denote a benzene radical which contains X 1 or X 2 in the position adjacent to the azo bond, B 1 and B 2 each denote a benzene, naphthalene, pyrazolone or acetoacetylarylamide radical which contains Y 1 or Y 2 in the position adjacent to the azo bond, with X 1 or X 2 denoting --O-- or --COO-- and Y 1 and Y 2 each denotes --O--, --N--R 7 , wherein R 7 represents hydrogen, alkyl or aryl, Me denotes chromium or cobalt, and R, R 1 and R 7 have the meaning indicated in claim 1.
Claim 2
Dependent Claim
87 words
A dyestuff salt according to claim 1 of the formula ##SPC5## wherein X 1 denotes --O-- or --COO--, Y denotes methyl or alkoxycarbonyl containing 1-6 carbon atoms, Y 5 denotes hydrogen, chloro, alkyl containing 1-6 carbon atoms or alkoxy containing 1-6 carbon atoms, Y 6 denotes hydrogen, nitro or alkylsulphonyl containing 1-6 carbon atoms, Y 3 and Y 4 denote hydrogen, chloro or alkyl containing 1-6 carbon atoms and R, R 1 and R 2 is alkyl containing 10-24 carbon atoms; and Me denotes chromium of cobalt.
Claim 3
Dependent Claim
11 words
A dyestuff salt according to claim 2, of the formula ##SPC6##
Claim 4
Dependent Claim
11 words
A dyestuff salt according to claim 2 of the formula ##SPC7##
Claim 5
Dependent Claim
11 words
A dyestuff salt according to claim 2 of the formula ##SPC8##
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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) | 1979-11-30 | 1980-05-31 | 1980-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-30 | 1984-05-31 | 1984-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-30 | 1988-05-31 | 1988-11-30 | $7700.00 | Window Closed / Lapsed |