US3956265A
Expired / Lapsed
US
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Monoazo hydroxy pyridone dyestuffs containing a methylene piperidino group
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1973-12-17
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Granted: 1976-05-11
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Expires: 1993-12-17
Abstract
Abstract Azo dyestuff free from carboxylic acid or sulphonic acid groups selected from the group consisting of A. A DYESTUFF OF THE FORMULA WHEREIN X is chlorine, bromine, iodine, -COOCH3, -COOC2H5, -COCH3, -COC6H5, -COC2H5, cyano or trifluoromethyl, Y is hydrogen, methyl, ethyl, methoxy, ethoxy, chlorine, bromine, nitro, cyano, -COOCH3, -COOC2H5, -COCH3, -COC2H5, trifluoromethyl or alkylene forming with the phenyl ring 1-naphthyl, Z is tertiary amino, T is lower allyl or phenyl, THE RING A can be substituted with (X)n alone or further substituted with lower alkyl or methoxy and B. A SALT OF THE DYESTUFF OF (A) WITH AN ORGANIC OR INORGANIC ACID.
Inventors
- 👤 John Lindley Leng
- 👤 David Frederick Newton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:11
CPC Classifications
C; C09; C09B; C09B43/00; C09B43/006; C09B29/00; C09B29/34; C09B29/36; C09B29/3604; C09B29/3617; C09B29/3621; C09B29/3626; C09B29/363; C09B43/40; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786; Y10T428/31855
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
171 words
Azo dyestuff free from carboxylic acid or sulphonic acid groups selected from the group consisting of a. a dyestuff of the formula ##SPC10## wherein X is chlorine, bromine, iodine, --COOCH 3 , --COOC 2 H 5 , --COCH 3 , --COC 6 H 5 , --COC 2 H 5 , cyano or trifluoromethyl, Y is hydrogen, methyl, ethyl, methoxy, ethoxy, chlorine, bromine, nitro, cyano, --COOCH 3 , --COOC 2 H 5 , --COCH 3 , --COC 2 H 5 , trifluoromethyl or alkylene forming with the phenyl ring 1-naphthyl, Z is ##SPC11## T is lower alkyl or phenyl, the ring A can be substituted with (X) n alone or further substituted with lower alkyl or methoxy, m is 1 or 2 and n is 1 or 2 and b. a salt of the dyestuff of (a) with an acid selected from the group consisting of hydrochloric acid, sulfuric acid, phosphoric acid, sulphamic acid, boric acid, formic acid, acetic acid, propionic acid, citric acid, oxalic acid and mono-, di- and tri-chloracetic acid.
Claim 2
Dependent Claim
171 words
Azo dyestuff free from carboxylic acid or sulphonic acid groups selected from the group consisting of a. a dyestuff of the formula ##SPC10## wherein X is chlorine, bromine, iodine, --COOCH 3 , --COOC 2 H 5 , --COCH 3 , --COC 6 H 5 , --COC 2 H 5 , cyano or trifluoromethyl, Y is hydrogen, methyl, ethyl, methoxy, ethoxy, chlorine, bromine, nitro, cyano, --COOCH 3 , --COOC 2 H 5 , --COCH 3 , --COC 2 H 5 , trifluoromethyl or alkylene forming with the phenyl ring 1-naphthyl, Z is ##SPC11## T is lower alkyl or phenyl, the ring A can be substituted with (X) n alone or further substituted with lower alkyl or methoxy, m is 1 or 2 and n is 1 or 2 and b. a salt of the dyestuff of (a) with an acid selected from the group consisting of hydrochloric acid, sulfuric acid, phosphoric acid, sulphamic acid, boric acid, formic acid, acetic acid, propionic acid, citric acid, oxalic acid and mono-, di- and tri-chloracetic acid.
Claim 3
Dependent Claim
81 words
The azo dyestuff of claim 1 wherein Z is --NR 1 R 2 wherein R 1 and R 2 each independently represent methyl, ethyl, isopropyl, tert-butyl, β-hydroxyethyl, β -cyanoethyl, γ-methoxy propyl, allyl, cyclopentyl, cyclohexyl, chlorocyclohexyl, methoxycyclohexyl, benzyl, β-phenylethyl, p-nitrobenzyl, p-methoxybenzyl or β-(4-chlorophenyl)ethyl, or R 2 is phenyl, o-, m- or -p-tolyl, o-, m- or -p-chlorophenyl or p-methoxyphenyl, or R 1 and R 2 together with the nitrogen atom to which they are attached form piperidino, morpholino, pyrrolidino, thiamorpholino, piperizino or hexahydroazepino.
Claim 4
Dependent Claim
81 words
Azo dyestuff free from carboxylic acid or sulphonic acid groups selected from the group consisting of a. a dyestuff of the formula ##SPC12## wherein X is chlorine, bromine, --COOC 2 H 5 , cyano, trifluoromethyl, --COCH 3 or --COC 6 H 5 , ##SPC13## T is methyl, ethyl or phenyl, Y is hydrogen, chlorine, methyl, methoxy, nitro, bromine, cyano, trifluoromethyl, --COOCH 3 or alkylene forming with the phenyl ring 1-naphthyl, m is 1 or 2 and n is 1 or 2.
Claim 5
Dependent Claim
81 words
Azo dyestuff free from carboxylic acid or sulphonic acid groups selected from the group consisting of a. a dyestuff of the formula ##SPC12## wherein X is chlorine, bromine, --COOC 2 H 5 , cyano, trifluoromethyl, --COCH 3 or --COC 6 H 5 , ##SPC13## T is methyl, ethyl or phenyl, Y is hydrogen, chlorine, methyl, methoxy, nitro, bromine, cyano, trifluoromethyl, --COOCH 3 or alkylene forming with the phenyl ring 1-naphthyl, m is 1 or 2 and n is 1 or 2.
Claim 6
Dependent Claim
17 words
The azo dyestuff of claim 3 wherein the ring A is further substituted with methoxy or ethyl.
Claim 7
Dependent Claim
10 words
The azo dyestuff of claim 1 having the formula: ##SPC14##
Claim 8
Dependent Claim
10 words
The azo dyestuff of claim 1 having the formula: ##SPC15##
Claim 9
Dependent Claim
10 words
The azo dyestuff of claim 1 having the formula: ##SPC16##
Claim 10
Dependent Claim
10 words
The azo dyestuff of claim 1 having the formula: ##SPC17##
Claim 11
Dependent Claim
10 words
The azo dyestuff of claim 1 having the formula: ##SPC18##
Claim 12
Dependent Claim
10 words
The azo dyestuff of claim 1 having the formula: ##SPC19##
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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) | 1979-05-11 | 1979-11-10 | 1980-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-11 | 1983-11-10 | 1984-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-11 | 1987-11-10 | 1988-05-11 | $7700.00 | Window Closed / Lapsed |