GB439296A - Improvements in or relating to the manufacture of dyestuffs of the anthraquinone series - Google Patents
Improvements in or relating to the manufacture of dyestuffs of the anthraquinone seriesInfo
- Publication number
- GB439296A GB439296A GB16609/34A GB1660934A GB439296A GB 439296 A GB439296 A GB 439296A GB 16609/34 A GB16609/34 A GB 16609/34A GB 1660934 A GB1660934 A GB 1660934A GB 439296 A GB439296 A GB 439296A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pentanthrimide
- sodium
- give
- prepared
- aluminium chloride
- 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
- C09B5/00—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
- C09B5/24—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings the heterocyclic rings being only condensed with an anthraquinone nucleus in 1-2 or 2-3 position
- C09B5/26—Carbazoles of the anthracene series
- C09B5/28—Anthrimide carbazoles
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Anthraquinonecarbazole dyes are prepared by fusing pentanthrimide (tetra - a - anthraquinonyl-1.4.5.8-tetraminoanthraquinone) with aluminium chloride at about 175--200 DEG C. in the presence of a cheap, water-soluble, fusible inert salt such as sodium chloride and preferably in the presence of an alkali metal carbonate and then oxidizing the product for example by means of chromic acid. In an example, a - pentanthrimide is fused at 180--190 DEG C. for a short time with sodium-aluminium chloride and in presence of a little soda ash; the mixture is oxidized by means of sodium dichromate and concentrated sulphuric acid to give a yellow-olive dye. The a -pentanthrimide is prepared by chlorinating 1.5-dinitro-4.8-dichloranthraquinone to give the 1.4.5.8-tetrachloro derivative and condensing this with 4 molar proportions of a -aminoanthraquinone. German Specification 262,788 is referred to. The Specification as open to inspection under Sect. 91 relates to carrying out the above treatment at a temperature below 270 DEG C. and preferably in presence of a suitable carbonate. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US439296XA | 1933-06-03 | 1933-06-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB439296A true GB439296A (en) | 1935-12-04 |
Family
ID=21929639
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB16609/34A Expired GB439296A (en) | 1933-06-03 | 1934-06-04 | Improvements in or relating to the manufacture of dyestuffs of the anthraquinone series |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB439296A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2425126A (en) * | 1943-08-27 | 1947-08-05 | American Cyanamid Co | Dibenzoylamino dianthrimide carbazole dyestuffs |
-
1934
- 1934-06-04 GB GB16609/34A patent/GB439296A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2425126A (en) * | 1943-08-27 | 1947-08-05 | American Cyanamid Co | Dibenzoylamino dianthrimide carbazole dyestuffs |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB384473A (en) | Manufacture of inorganic coloured pigments | |
GB399753A (en) | Manufacture of solid stable diazo-azo-salts | |
GB439296A (en) | Improvements in or relating to the manufacture of dyestuffs of the anthraquinone series | |
GB263179A (en) | Manufacture of thiomorpholines of the anthraquinone series | |
GB421632A (en) | Manufacture of new water-soluble anthraquinone dyestuffs | |
GB461998A (en) | Process for the manufacture of new anthraquinone derivatives | |
US2062443A (en) | Improved 4:4'-dimethyl-6:6'-dihalogen thioindigo | |
GB462693A (en) | Process for the manufacture of new acid wool dyestuffs of the anthraquinone series | |
GB238523A (en) | Manufacture of vat dyestuffs of the anthracene series | |
GB358852A (en) | Process for the preparation of 1-aminoanthraquinone-2-sulphonic acid | |
GB396976A (en) | Manufacture of nitrogenous derivatives of the anthraquinone series | |
GB460886A (en) | Electrodeposition of tungsten and tungsten alloys | |
GB421249A (en) | Improvements in or relating to the manufacture of vat dyes of the dibenzanthrone series | |
GB419954A (en) | Process for the manufacture of 1.4-diamino-anthraquinone-2.3.x-trisulphonic acids | |
GB440822A (en) | Improvements in the manufacture and production of vat dyestuffs | |
GB572428A (en) | Improved process for manufacture of vat dyes | |
GB203533A (en) | Improvements in the manufacture and production of dyestuffs and intermediate products therefor | |
GB469638A (en) | Manufacture of new vat dyestuffs | |
GB462465A (en) | Manufacture of methyl-aminonaphthalene-sulphonic acids | |
GB386989A (en) | Improvements in anthraquinone derivatives | |
GB284035A (en) | Improvements in and relating to the production of benzanthrones and their derivatives | |
GB367462A (en) | Improvements in and relating to the production and use of benzanthrone derivatives | |
GB413118A (en) | Manufacture of new sulphur dyestuffs | |
GB385219A (en) | Manufacture of chloro- and bromo-derivatives of 2-aminonaphthalene-1-sulphonic acid | |
GB814619A (en) | Improved process for the manufacture of vat dyestuffs of the anthraquinone series |