GB611320A - Improvements in and relating to azo dyestuffs - Google Patents
Improvements in and relating to azo dyestuffsInfo
- Publication number
- GB611320A GB611320A GB2141/46A GB214146A GB611320A GB 611320 A GB611320 A GB 611320A GB 2141/46 A GB2141/46 A GB 2141/46A GB 214146 A GB214146 A GB 214146A GB 611320 A GB611320 A GB 611320A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaminobenzene
- methyl
- class
- acid
- disulphonic acid
- 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
- C09B29/00—Monoazo dyes prepared by diazotising and coupling
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
Arylenediamines in which both amino groups are substituted by a sulphonic group and one of them also by an organic radical are obtained by treating arylene diamines, in which one of the amino groups is primary and the other secondary, with sulphonating agents (e.g. sulphuric anhydride, sulphuric chlorhydrin, chlorosulphonic ester, oleum or pyridinium sulphonate) mixed or combined with a tertiary amine (e.g. pyridine or dimethylaniline), if desired in the presence of a solvent or diluent. In the examples, N1 - methyl - 1 : 4 - diaminobenzene-N1 : N4-disulphonic acid, 1 : N2-dimethyl-2 : 4-diaminobenzene-N2 : N4-disulphonic acid, and N1-phenyl-1 : 4-diaminobenzene-N1 : N4-disulphonic acid and its 41-methyl and 41-methoxy derivatives are prepared by treating the appropriate diamines (in some cases in the form of the hydrochloride) in the presence of pyridine with sulphuric chlorhydrin or its reaction product with pyridine. Specifications 5689/03, [Class 2], 186,057, 202,630, [both in Class 2 (iii)], and 231,889, [Class 2 (ii)], are referred to. The Specification as open to inspection under Sect. 91 comprises also a reference to the sulphoration of 1 - chloro - N3 - methyl - 3 : 4-diaminobenzene, which is obtainable by the action of methylamine on 1-chloro-3 : 4-dinitrobenzene, followed by reduction. This subject-matter does not appear in the Specification as accepted.ALSO:Azo dyestuffs are manufactured by treating with a diazotizing agent an arylenediamine of which both amino groups are substituted by a sulphonic group and one of them also by an organic radical (whereby this latter amino group is unaffected whilst the other is converted into a diazo group), and coupling the resulting diazo compound (which is probably in the form of an internal salt) with any coupling component soluble or insoluble in water. The products dye wool, silk, lanital and animalized cellulosic fibres. Examples describe the production of dyestuffs from the following components: diazo components: N1-methyl-1 : 4-diaminobenzene-N1 : N4-disulphonic acid, 1 : N2-dimethyl-2 : 4-diaminobenzene-N2 : N4-disulphonic acid, and N1-phenyl-1 : 4-diaminobenzene-N1 : N4-disulphonic acid and its 41-methyl and 41-methoxy derivatives; coupling components: 2 : 3 - hydroxynaphthoic acid anilide, o-toluidide, o-and p-anisidide, o-phenetidide, 2-methyl-4-methoxyanilide, m-nitranilide, 2 : 5-dimethoxyanilide and b -naphthylamide, 2-hydroxycarbazole - 3 - carboxylic acid p - chloranilide, 2-hydroxynaphthocarbazole-3-carboxylic acid p-anisidide (derived from 1 : 2-benzocarbazole), 2 - hydroxyanthracene - 3 - carboxylic acid o - toluidide, 3-hydroxydiphenylene oxide-2-carboxylic acid 2 : 5-dimethoxyanilide, terephthaloyldiacetic acid 2 : 4-dimethoxy-5-chloranilide, di - (acetoacetyl) - o - tolidine, b - naphthol, 1 - phenyl - 3 - methyl - 5 - pyrazolone, 1 : 8 - di - hydroxynaphthalene-3 : 6-disulphonic acid, and a -naphthylamine. Specifications 5689/03, [Class 2], 186,057, 202,630, [both in Class 2 (iii)], and 231,889, [Class 2 (ii)], are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR611320X | 1945-02-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB611320A true GB611320A (en) | 1948-10-28 |
Family
ID=8977994
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2141/46A Expired GB611320A (en) | 1945-02-02 | 1946-01-22 | Improvements in and relating to azo dyestuffs |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB611320A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2648660A (en) * | 1953-08-11 | Process fob |
-
1946
- 1946-01-22 GB GB2141/46A patent/GB611320A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2648660A (en) * | 1953-08-11 | Process fob |
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