US4472575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Triphendioxazine dyestuffs
Assignee: Avecia Ltd
•
Filing: 1982-12-23
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Granted: 1984-09-18
•
Expires: 2002-12-23
Abstract
Abstract A dyestuff of the formula: <IMAGE> (I) wherein: the groups X1 and X2 are independently hydrogen, halogen, alkyl, alkoxy or aryl; (R)n represents n substituents R each of which is independently halogen, lower alkyl, lower alkoxy or COOH and n is 0 or 1; a+b is 0 to 4; A is O, S or NR2 wherein R2 is H or optionally substituted lower alkyl; B is an optionally substituted aliphatic or optionally substituted araliphatic group; R1 is hydrogen, optionally substituted lower alkyl, optionally substituted aryl or optionally substituted aralkyl; and Z is an aromatic nitrogen ring heterocycle devoid of cellulose-reactive groups. The dyestuffs are valuable for the coloration of cellulose especially in the form of paper. The resulting colored cellulose is a bright blue with good fastness properties.
Inventors
- 👤 Andrew H. M. Renfrew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:45
CPC Classifications
C; C09; C09B; C09B19/00; C09B19/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
212 words
A dyestuff of the formula: ##STR8## wherein: the groups X 1 and X 2 are halogen; (R) n represents n substituents R each of which may be halogen, and n is 0 or 1; A is --NH--; B is a linear or branched chain aliphatic group containing from 2 to 6 carbon atoms; R 1 is selected from the group consisting of H, --CH 3 , --C 2 H 5 , --C 2 H 4 OH and --C 2 H 4 OSO 3 H; and Z is selected from the group consisting of s-triazin-2-yl, pyrimidin-2-yl, pyridinyl and quinoxalinyl each being devoid of cellulose-reactive groups and having one or more non-reactive substituents selected from the group consisting of hydrogen; hydroxy; cyano; C 1 to C 4 alkoxy; amino; C 1 to C 4 alkylamino; di (C 1 to C 4 alkyl)amino; hydroxy(C 1 to C 4 alkyl)amino; di(hydroxy C 1 to C 4 alkyl)amino; morpholino; piperazino and phenylamino of the formula: ##STR9## wherein K and X are each independently selected from the group consisting of H, COOH, SO 3 H, CH 3 , C 2 H 5 , OCH 3 , OC 2 H 5 , Cl, Br, CN, NO 2 , NHCOCH 3 , NH 2 , phenyl amino and methyl amino.
Claim 2
Dependent Claim
212 words
A dyestuff of the formula: ##STR8## wherein: the groups X 1 and X 2 are halogen; (R) n represents n substituents R each of which may be halogen, and n is 0 or 1; A is --NH--; B is a linear or branched chain aliphatic group containing from 2 to 6 carbon atoms; R 1 is selected from the group consisting of H, --CH 3 , --C 2 H 5 , --C 2 H 4 OH and --C 2 H 4 OSO 3 H; and Z is selected from the group consisting of s-triazin-2-yl, pyrimidin-2-yl, pyridinyl and quinoxalinyl each being devoid of cellulose-reactive groups and having one or more non-reactive substituents selected from the group consisting of hydrogen; hydroxy; cyano; C 1 to C 4 alkoxy; amino; C 1 to C 4 alkylamino; di (C 1 to C 4 alkyl)amino; hydroxy(C 1 to C 4 alkyl)amino; di(hydroxy C 1 to C 4 alkyl)amino; morpholino; piperazino and phenylamino of the formula: ##STR9## wherein K and X are each independently selected from the group consisting of H, COOH, SO 3 H, CH 3 , C 2 H 5 , OCH 3 , OC 2 H 5 , Cl, Br, CN, NO 2 , NHCOCH 3 , NH 2 , phenyl amino and methyl amino.
Claim 3
Dependent Claim
21 words
A dyestuff as claimed in claim 1 wherein --B-- is --C 3 H 6 -- or --C 2 H 4 --.
Claim 4
Dependent Claim
14 words
A dyestuff as claimed in claim 1 wherein Z is a substituted s-triazin-2-yl group.
Claim 5
Dependent Claim
19 words
A dyestuff as claimed in claim 1 wherein X 1 and X 2 are Cl and n is 0.
Claim 6
Dependent Claim
50 words
A dyestuff as claimed in claim 4 wherein z is a group of the formula: ##STR10## wherein one of S 1 and S 2 is a sulphanilino group and the other is a primary or secondary alkylamino group containing from 1 to 8 carbon atoms or a cycloaliphatic amino group.
Claim 7
Dependent Claim
57 words
A dyestuff as claimed in claim 5 wherein Z is a group of the formula: ##STR11## wherein S 2 is a primary or secondary alkylamino group containing from 1 to 8 carbon atoms or a primary or secondary alkyl group containing from 1 to 8 carbon atoms having a hydroxy substituent or a morpholino or piperidino group.
Claim 8
Dependent Claim
6 words
A dyestuff of the formula: ##STR12##
Claim 9
Dependent Claim
6 words
A dyestuff of the formula: ##STR12##
Claim 10
Dependent Claim
6 words
A dyestuff of the formula: ##STR13##
Claim 11
Dependent Claim
6 words
A dyestuff of the formula: ##STR13##
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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) | 1987-09-18 | 1988-03-19 | 1988-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-18 | 1992-03-19 | 1992-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-18 | 1996-03-19 | 1996-09-18 | $7700.00 | Window Closed / Lapsed |