GB644883A - Manufacture of meta iliferous azo-dyestuffs - Google Patents
Manufacture of meta iliferous azo-dyestuffsInfo
- Publication number
- GB644883A GB644883A GB26268/47A GB2626847A GB644883A GB 644883 A GB644883 A GB 644883A GB 26268/47 A GB26268/47 A GB 26268/47A GB 2626847 A GB2626847 A GB 2626847A GB 644883 A GB644883 A GB 644883A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coupling
- dyestuffs
- group
- component
- hydroxy group
- 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
- C09B45/00—Complex metal compounds of azo dyes
- C09B45/01—Complex metal compounds of azo dyes characterised by the method of metallisation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Abstract
Metalliferous azo dyestuffs are manufactured by treating an o-alkoxy-o1-hydroxyazo dyestuff, which contains at least one sulphonic acid group and at least two azo groups, in the presence of an aliphatic amine containing a hydroxy group (e.g. mono-, di- or tri-ethanolamine), with an agent yielding metal (preferably of atomic number 24-30, especially 27-29) until the alkoxy group or groups is or are split up. Suitable starting materials are obtainable by coupling a tetrazotized 4 : 41-diamino - 3 : 31 - dialkoxydiphenyl (especially tetrazotized diamisidine) with a coupling component or components coupling in o-position to a hydroxy group, e.g. with 2 molecular proportions (identical or different) of a naphthol-or aminonaphthol-, mono- or di-sulphonic acid or acids (of which many are specified), or with one molecular proportion of such a component and one of a different type of component coupling in o-position to a hydroxy group (e.g. a 1 - sulphophenyl - 3 - methyl - 5-pyrazolone), or by coupling any diazo compound with a middle component coupling in p-position to an amine group and having an alkoxy group in o-position thereto (e.g. 2-methoxy-5-methylaniline), diazotizing the product and coupling with an end component coupling in o-position to a hydroxy group. The products are suitable for the substantive dyeing of cellulosic fibres such as cotton, linen, and artificial silk and staple fibres of regenerated cellulose. The zinc compounds can be converted to metal-free o : o1-dihydroxyazo dyestuffs. Examples describe the preparation of copper and nickel compounds of dyestuffs of the types mentioned above, and the dyeing of cotton in greenish-blue tints with the copper compound of the dyestuff dianisidine \sQ H-acid (2 mols.) from a bath containing sodium carbonate and sodium sulphate. Specification 575,437 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH644883X | 1946-10-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB644883A true GB644883A (en) | 1950-10-18 |
Family
ID=4525693
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB26268/47A Expired GB644883A (en) | 1946-10-17 | 1947-09-29 | Manufacture of meta iliferous azo-dyestuffs |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB644883A (en) |
-
1947
- 1947-09-29 GB GB26268/47A patent/GB644883A/en not_active Expired
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