GB425307A - Improvements in the manufacture and production of diazo dyestuffs - Google Patents
Improvements in the manufacture and production of diazo dyestuffsInfo
- Publication number
- GB425307A GB425307A GB2471933A GB2471933A GB425307A GB 425307 A GB425307 A GB 425307A GB 2471933 A GB2471933 A GB 2471933A GB 2471933 A GB2471933 A GB 2471933A GB 425307 A GB425307 A GB 425307A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nitraniline
- hydroxyethylamino
- methylbenzene
- brown
- methoxy
- 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
- C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
- C09B31/02—Disazo dyes
- C09B31/04—Disazo dyes from a coupling component "C" containing a directive amino group
- C09B31/043—Amino-benzenes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Abstract
Secondary disazo dyes suitable for dyeing cellulose esters and ethers are made by coupling a diazotized aminoazo compound with an amine of the benzene series having at least one hydroxyalkyl group attached to the nitrogen atom, the components being free from sulphonic and carboxylic groups. The use of a dialkoxyaniline as middle component is excluded (cf. Specification 403,388). Fast clear brown, red or violet shades are obtained. The dyes: a p-nitraniline --> a primary amine methylated in the nucleus --> an N-oxyalkyl-m-toluidine are of special value. In examples, the following dyes are described: (1) p-nitraniline --> a -naphthylamine --> 1-hydroxyethylamino-2-methoxy-5-methylbenzene (wine-red); (2) m-nitraniline --> m-toluidine --> N-hydroxyethyl-N-ethylaniline (blue red) or 1-hydroxyethylamino-3-toluene (yellow-brown); (3) p-aminoazobenzene --> dihydroxyethylaminobenzene (yellow-red); (4) p-nitraniline --> m-toluidine --> 1-hydroxyethylamino - 2 - methoxy - 5 - methylbenzene (brown-violet); p-nitraniline --> 1-amino-2 : 5-dimethylbenzene or 1-amino-2-methoxy - 5 - methylbenzene --> 1-hydroxyethylamino - 2 - methoxy - 5 - methylbenzene (violet - brown) or 1 - hydroxyethylamino - 3 - methylbenzene (pure brown). Lists of other components are given in the Specification. Specifications 251,155, 270,428, and 274,823, [all in Class 15 (ii)], also are referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2471933A GB425307A (en) | 1933-09-06 | 1933-09-06 | Improvements in the manufacture and production of diazo dyestuffs |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2471933A GB425307A (en) | 1933-09-06 | 1933-09-06 | Improvements in the manufacture and production of diazo dyestuffs |
Publications (1)
Publication Number | Publication Date |
---|---|
GB425307A true GB425307A (en) | 1935-03-06 |
Family
ID=10216162
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2471933A Expired GB425307A (en) | 1933-09-06 | 1933-09-06 | Improvements in the manufacture and production of diazo dyestuffs |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB425307A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0009191A1 (en) * | 1978-09-15 | 1980-04-02 | CASSELLA Aktiengesellschaft | Water-insoluble disazodyestuffs, their preparation and application |
-
1933
- 1933-09-06 GB GB2471933A patent/GB425307A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0009191A1 (en) * | 1978-09-15 | 1980-04-02 | CASSELLA Aktiengesellschaft | Water-insoluble disazodyestuffs, their preparation and application |
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