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US4185151A
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Cationic dyestuffs
Assignee: Bayer AG
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Filing: 1976-12-16
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Granted: 1980-01-22
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Expires: 1996-12-16
Abstract
Abstract Cationic dyestuffs of the formula ##STR1## in which R represents hydrogen, an alkyl, alkenyl, cycloalkyl or aralkyl radical, R 1 represents hydrogen or an alkyl, alkenyl, cycloalkyl or aralkyl radical, with the proviso that at least one of the radicals R and R 1 represents a C 2 -C 4 -hydroxyalkyl group and An.sup.(-) represents an anion, and in which the cyclic and acyclic radicals can contain nonionic substituents, their preparation and their use for dyeing polyacrylonitrile, acid modified polyesters and acid modified polyamides.
Inventors
- 👤 Hans-Peter Kuhlthau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:06
CPC Classifications
C; C09; C09B; C09B57/00; C09B57/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
36 words
Cationic dyestuffs of the formula ##STR37## wherein R' is C 1 -C 6 -alkyl; R 1 ' is β-hydroxyethyl; β-hydroxy-n-propyl; γ-hydroxy-n-propyl; β-hydroxy-n-butyl; γ-hydroxy-n-butyl; or β-hydroxy-i-butyl; R 2 is hydrogen or halogen; and An.sup.(-) is an anion.
Claim 2
Dependent Claim
36 words
Cationic dyestuffs of the formula ##STR37## wherein R' is C 1 -C 6 -alkyl; R 1 ' is β-hydroxyethyl; β-hydroxy-n-propyl; γ-hydroxy-n-propyl; β-hydroxy-n-butyl; γ-hydroxy-n-butyl; or β-hydroxy-i-butyl; R 2 is hydrogen or halogen; and An.sup.(-) is an anion.
Claim 3
Dependent Claim
20 words
Cationic dyestuff of claim 1, wherein R' is methyl, ethyl, n-propyl, n-butyl, and R 2 is hydrogen, bromine, or chlorine.
Claim 4
Dependent Claim
11 words
Cationic dyestuff of claim 2 wherein R 1 ' is β-hydroxyethyl.
Claim 5
Dependent Claim
10 words
Cationic dyestuff of claim 3, wherein R 2 is hydrogen.
Claim 6
Dependent Claim
31 words
Cationic dyestuff of claim 1, wherein R' is ethyl, R 1 ' is C 2 H 4 OH or CH 2 CHOHCH 3 , and R 2 is hydrogen or bromine.
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) | 1983-01-21 | 1983-07-23 | 1984-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-21 | 1987-07-23 | 1988-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-21 | 1991-07-23 | 1992-01-22 | $7700.00 | Window Closed / Lapsed |