GB447775A - Process for the manufacture of azodyestuffs - Google Patents
Process for the manufacture of azodyestuffsInfo
- Publication number
- GB447775A GB447775A GB33857/34A GB3385734A GB447775A GB 447775 A GB447775 A GB 447775A GB 33857/34 A GB33857/34 A GB 33857/34A GB 3385734 A GB3385734 A GB 3385734A GB 447775 A GB447775 A GB 447775A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sulphonic acid
- resorcinol
- acid
- nitroaniline
- coupling
- 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
- C09B33/00—Disazo and polyazo dyes of the types A->K<-B, A->B->K<-C, or the like, prepared by diazotising and coupling
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Azo dyes containing copper in a complex form are made by coupling a mono-azo dye of the formula <FORM:0447775/IV/1> (in which x=hydroxyl, alkoxy, halogen or carboxyl, y=hydroxyl amino or substituted amino, one z means the same as y and the other z stands for hydrogen or any substituent, and in which R means a benzene or naphthalene radicle and R and R<1> may contain further substituents), with a diazo compound containing only once the grouping --N=N--, if desired, coupling the disazo dye with a further diazo compound, and transforming the dyestuff by a wet process either prior or subsequent to the final coupling into the copper complex compound of the corresponding o-hydroxy- or o-carboxy azo dye. They dye leather, and animal and vegetable fibres in brown shades. The following dyes are described in examples: (1) 2-anisidine-4-sulphonic acid --> resorcinol (coppered) \sM m-nitroaniline or 4-nitro-1 : 3-phenylenediamine; (2) 2-anisidine-4-sulphonic acid \sQ resorcinol treated with copper ammonia solution; (3) 6-chloroaniline-3-sulphonic acid --> resorcinol (coppered) \sM dehydrothiotoluidine sulphonic acid; (4) 5-nitro-2-anisidine-4-sulphonic acid --> resorcinol (coppered) \sM p-chloraniline; (5) the second disazo dyestuff in (1) coupled with diazotized 2-anisidine-4-sulphonic acid or 4-nitroaniline-3-sulphonic acid; (6) 2-anisidine-4-sulphonic acid \sQ resorcinol \sM p-nitroaniline treated with copper ammonia solution; (7) 2-chloraniline-4-sulphonic acid --> resorcinol (coppered) \sQ p-nitroaniline and dehydrothiotoluidine sulpho acid. Specification 297,003, [Class 2 (iii)], is referred to. The Specification as open to inspection under Sect. 91 comprises the coupling of the monoazo dyes of the above formula with a diazo compound suitable for preparing azo dyes with the exception of a diazoazo compound, if desired, coupling the disazo dye with a further diazo compound, and transforming the dyestuff either prior or subsequent to the final coupling into a heavy metal complex compound. Examples of the following dyestuffs are given: (1) 6-chloro-2-aminophenol-4-sulphonic acid --> resorcinol \sM dehydrothiotoluidine sulphonic acid or 4<1>-nitro-4-aminodiphenylamine sulpho acid treated with chromium formate; (2) anthranilic acid --> m-aminophenol (chromed) \sM p-nitroaniline-3-sulphonic acid; (3) nitro-1-amino-2-naphthol-4-sulphonic acid --> resorcinol (chromed) \sM naphthionic acid; (4) the dyestuff of (3) coupled alkaline with diazotized p-nitroaniline; (5) 4-nitro-2-aminophenol - 6 - sulphonic acid \sQ m - phenylene diamine treated with chromium sulphate. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE447775X | 1933-11-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB447775A true GB447775A (en) | 1936-05-25 |
Family
ID=6538054
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB33857/34A Expired GB447775A (en) | 1933-11-25 | 1934-11-24 | Process for the manufacture of azodyestuffs |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB447775A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1049022B (en) * | 1957-01-26 | 1959-01-22 | Hoechst Ag | Process for the production of metal-containing azo dyes |
DE1058660B (en) * | 1957-02-26 | 1959-06-04 | Hoechst Ag | Process for the production of metal-containing azo dyes |
-
1934
- 1934-11-24 GB GB33857/34A patent/GB447775A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1049022B (en) * | 1957-01-26 | 1959-01-22 | Hoechst Ag | Process for the production of metal-containing azo dyes |
DE1058660B (en) * | 1957-02-26 | 1959-06-04 | Hoechst Ag | Process for the production of metal-containing azo dyes |
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