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US4512773A
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Cationic triphendioxazine dyes, methods for their manufacture and their use for dyeing cellulosic substrates
Assignee: Syngenta Ltd
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Filing: 1983-05-10
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Granted: 1985-04-23
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Expires: 2003-05-10
Abstract
Abstract A dyestuff of formula: ##STR1## wherein: the groups X 1 and X 2 are independently hydrogen, halogen, alkyl, aryl, alkoxy, cyano, optionally substituted amino or carboxylic acid ester groups; (R) n represents n substituents R each of which is independently halogen, lower alkyl, lower alkoxy or --COOH and n is 0 or 1; R 1 is hydrogen, or optionally substituted lower alkyl; Y is an optionally substituted aliphatic or optionally substituted araliphatic group; R 2 is hydrogen, optionally substituted lower alkyl, optionally substituted aryl or optionally substituted aralkyl; R 3 is hydrogen or an optionally substituted alkyl or aralkyl group; A - is an anion; a is 0 or 1; and Z is hydrogen, optionally substituted lower alkyl, optionally substituted aryl or optionally substituted aralkyl. The dyes are useful for the coloration of materials such as textiles, leather, inks and lacquers.
Inventors
- 👤 Kenneth Anderton
- 👤 Nigel Hall
- 👤 Brian Parton
- 👤 Andrew H. M. Renfrew
- 👤 Malcolm G. Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:11
CPC Classifications
C; C09; C09B; C09B19/00; C09B19/02; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/918; Y10S8/919
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
118 words
A triphendioxazine dyestuff of blue shade having the formula: ##STR9## wherein X 1 and X 2 are both halogen; (R) n represents n substituents R each of which is independently halogen and n is 0 or 1; R 1 is hydrogen or a lower alkyl group; Y is a linear or branched aliphatic group containing from 2 to 6 carbon atoms and optionally containing one or more hydroxy or alkoxy substituents; R 2 is hydrogen, lower alkyl, hydroxy substituted lower alkyl, phenyl, 3- or 4- nitrophenyl, benzyl or beta-sulphatoethyl; R 3 is hydrogen or a lower alkyl group; A - is an anion and a is 1 or 0; and Z is hydrogen or a lower alkyl group.
Claim 2
Dependent Claim
118 words
A triphendioxazine dyestuff of blue shade having the formula: ##STR9## wherein X 1 and X 2 are both halogen; (R) n represents n substituents R each of which is independently halogen and n is 0 or 1; R 1 is hydrogen or a lower alkyl group; Y is a linear or branched aliphatic group containing from 2 to 6 carbon atoms and optionally containing one or more hydroxy or alkoxy substituents; R 2 is hydrogen, lower alkyl, hydroxy substituted lower alkyl, phenyl, 3- or 4- nitrophenyl, benzyl or beta-sulphatoethyl; R 3 is hydrogen or a lower alkyl group; A - is an anion and a is 1 or 0; and Z is hydrogen or a lower alkyl group.
Claim 3
Dependent Claim
77 words
A dyestuff according to claim 1 wherein X 1 and X 2 are both chlorine; n is 0; R 1 is hydrogen or methyl, Y is a linear or branched aliphatic group containing from 2 to 6 carbon atoms; R 2 is hydrogen, lower alkyl or hydroxy substituted lower alkyl; R 3 is hydrogen or lower alkyl, A - is an anion and a is 1 or 0; and Z is hydrogen or a lower alkyl group.
Claim 4
Dependent Claim
46 words
A dyestuff according to claim 1 wherein X 1 and X 2 are both chlorine; n is 0; R 1 is hydrogen; R 2 is hydrogen or lower alkyl; Y is ethyl or propyl; a is 0; and Z is hydrogen or a lower alkyl group.
Claim 5
Dependent Claim
15 words
A dyestuff according to claim 3 wherein R 2 and Z are both lower alkyl.
Claim 6
Dependent Claim
14 words
A dyestuff according to claim 4 wherein R 2 and Z are both methyl.
Claim 7
Dependent Claim
48 words
A dyestuff according to claim 1 wherein X 1 and X 2 are both chlorine; n is 0; R 1 is hydrogen or lower alkyl; R 2 is lower alkyl; Y is ethyl or propyl; a is 1; R 3 is lower alkyl and Z is lower alkyl.
Claim 8
Dependent Claim
30 words
A process for the manufacture of a dyestuff according to claim 1 which comprises de-sulphonation of a compound of formula: ##STR10## by heating in the presence of a mineral acid.
Claim 9
Dependent Claim
36 words
A process according to claim 7 wherein the mineral acid is sulphuric acid having a concentration in excess of 80% by weight and the reaction temperature is in the range of 90 ° to 150° C.
Claim 10
Dependent Claim
17 words
A process for dying cellulosic substrates using a dyestuff according to any of claims 1 to 6.
References Cited (Backward Citations)
US2026092A
Cited
US2016504A
Cited
US2082344A
Cited
FR1116564A
Cited
GB781384A
Cited
GB850159A
Cited
GB1028916A
Cited
GB1368158A
Cited
GB1384749A
Cited
US3892742A
Cited
US3996221A
Cited
GB2019872A
Cited
US4336377A
Cited
US4395545A
Cited
GB2059985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-04-22 | 1988-10-22 | 1989-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-22 | 1992-10-22 | 1993-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-22 | 1996-10-22 | 1997-04-23 | $7700.00 | Window Closed / Lapsed |