GB400870A - Manufacture of dyestuffs - Google Patents
Manufacture of dyestuffsInfo
- Publication number
- GB400870A GB400870A GB13601/33A GB1360133A GB400870A GB 400870 A GB400870 A GB 400870A GB 13601/33 A GB13601/33 A GB 13601/33A GB 1360133 A GB1360133 A GB 1360133A GB 400870 A GB400870 A GB 400870A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sulpho
- methoxy
- aminodiphenylamine
- condensed
- dinitrobenzoic
- 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
- C09B51/00—Nitro or nitroso dyes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
p-Aminodiphenylamine or its homologues or substitution products are condensed with 2-alkoxy-3 : 5-dinitro- or 4-alkoxy-3 : 5- dinitrobenzoic acids or alkyl esters to give dyes which yield yellow-brown to red-brown fast shades on animal fibres. Condensation may be conducted in a suitable solvent or diluent with or without the addition of an acid-binding agent such as sodium acetate, sodium carbonate, calcium carbonate, magnesium oxide. In examples: (1) 4-aminodiphenylamine-2-sulphonic acid is condensed with 4- and 2-methoxy-3 : 5-dinitrobenzoic acids (prepared by nitrating p- and o-methoxybenzoic acids); (2) 4-amino-diphenylamine is condensed with the methyl or ethyl ester of 4-methoxy-3 : 5-dinitrobenzoic acid. The use of the following derivatives of 4-aminodiphenylamine is also specified: 2 - sulpho - 4<1> - methyl, 2 - sulpho - 2<1> - carboxy, 2-carboxy, 2-sulpho-4<1>-methoxy-, 2-sulpho-2<1>-methoxy, 2-sulpho-4<1>-hydroxy-, and 4<1>-sulpho. Specification 279,133, [Class 2 (iii), Dyes &c.], is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE400870X | 1932-05-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB400870A true GB400870A (en) | 1933-11-02 |
Family
ID=6402508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13601/33A Expired GB400870A (en) | 1932-05-10 | 1933-05-10 | Manufacture of dyestuffs |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB400870A (en) |
-
1933
- 1933-05-10 GB GB13601/33A patent/GB400870A/en not_active Expired
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