GB803249A - Brown vat dyestuffs - Google Patents
Brown vat dyestuffsInfo
- Publication number
- GB803249A GB803249A GB2551656A GB2551656A GB803249A GB 803249 A GB803249 A GB 803249A GB 2551656 A GB2551656 A GB 2551656A GB 2551656 A GB2551656 A GB 2551656A GB 803249 A GB803249 A GB 803249A
- Authority
- GB
- United Kingdom
- Prior art keywords
- naphthoquinone
- carbazole
- benzo
- pyridine
- hydroxy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B57/00—Other synthetic dyes of known constitution
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pyridine Compounds (AREA)
Abstract
The invention comprises dyes of the formula <FORM:0803249/IV (c)/1> where R is nitro, amino, halogen, methyl or ethyl, n is 0 or 1, and m has a value of 0-3, and the alkali metal leuco-disulphuric ester salts thereof. They are made by heating a 2.3-dichloro -1.4-naphthoquinone with a 31-hydroxy-(benzo - 11.21.1.2 - carbazole) unsubstituted in 41-position, in presence of an acid accepter. They dye and print cotton brown shades. In examples: (1) 2.3-dichloro-1.4-naphthoquinone and 31 - hydroxy - (benzo - 11.21 : 1.2 - carbazole) are refluxed in pyridine; (2) 8-nitro-2.3-dichloro - 1.4 - naphthoquinone and 31 - hydroxy - (benzo - 11.21 : 1.2 - carbazole) are refluxed in pyridine, and the nitro body may either be used direct in dyeing or printing, when reduction of nitro to amino takes place in the vat or paste, or is reduced in a separate step with alkaline sulphide or hydrosulphite; (3) 31 - hydroxy - 8 - methyl - (benzo - 11.21.1.2 -carbazole) is heated in pyridine with 2.3-dichloo-1.4 -naphthoquinone or its 8 nitro derivative; (4) 31 - hydroxy - 7 - chloro - (benzo - 11.21.1.2-carbazole) is heated in pyridine with 2.3-dichloro-1.4-naphthoquinone or its 8-nitro derivative; (5) the product of 1 is converted to its leuco-sulphuric ester salt with iron and chlorsulphonic acid in pyridine in presence of cuprous chloride; (6) 2.3-dichloro-1.4-naphthoquinone and 31 - hydroxy - (benzo - 11.21 : 1.2 - carbazole) are heated with alcoholic potash or with a mixture of monochlorbenzene and pyridine.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2551656A GB803249A (en) | 1956-08-21 | 1956-08-21 | Brown vat dyestuffs |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2551656A GB803249A (en) | 1956-08-21 | 1956-08-21 | Brown vat dyestuffs |
Publications (1)
Publication Number | Publication Date |
---|---|
GB803249A true GB803249A (en) | 1958-10-22 |
Family
ID=10228956
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2551656A Expired GB803249A (en) | 1956-08-21 | 1956-08-21 | Brown vat dyestuffs |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB803249A (en) |
-
1956
- 1956-08-21 GB GB2551656A patent/GB803249A/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB803249A (en) | Brown vat dyestuffs | |
US1867125A (en) | Water soluble sulphuric acid ester of anthraquinonyl-diphenyl-triazine-carboxylic acid amide | |
GB766407A (en) | Improvements in the production of vat dyestuffs of the anthraquinone series | |
GB791304A (en) | Vat dyestuffs of the anthraquinone series | |
US1106970A (en) | Compounds of leuco vat dyes with aralkyl compounds and process of making same. | |
GB652818A (en) | Dibenzanthrone dyestuffs | |
GB891794A (en) | New anthraquinone vat dyestuffs and process for their manufacture | |
GB661907A (en) | Manufacture of vat dyestuffs of the anthraquinone series | |
GB788777A (en) | Process for the manufacture of vat dyestuffs | |
GB678522A (en) | A new vat dyestuff of the acedianthrone series | |
GB678523A (en) | New vat dyestuffs of the acedianthrone series | |
GB388096A (en) | Improvements in the manufacture and production of vat dyestuffs of the anthraquinoneseries | |
GB480745A (en) | New anthraquinone dyestuffs | |
GB1428577A (en) | Yellow sulphur dyestuff and preparation thereof | |
GB745365A (en) | Process for the manufacture of salts of sulphuric acid esters of leuco vat dyestuffs of the anthraquinone series | |
GB807595A (en) | A black vat dyestuff of the violanthrone series | |
GB414138A (en) | Process for the manufacture of dyestuffs of the azine series | |
GB265232A (en) | Manufacture of vat-dyestuffs | |
GB357986A (en) | Process for the manufacture of a stable water soluble yellow sulphuric acid ester | |
GB672901A (en) | New vat dyestuffs of the acedianthrone series | |
GB692970A (en) | Acid dyestuffs of the anthrapyridone series and a process for their manufacture | |
GB707576A (en) | Vat dyestuffs of the phthaloyl-acridone series | |
GB777789A (en) | New vat dyestuff of the anthraquinone series | |
GB561754A (en) | Anthraquinone dyestuffs | |
GB492931A (en) | Improvements in printing and dyeing with the ester salts of leuco vat dyestuffs |