GB695534A - Process for the preparation of polyazo dyestuffs - Google Patents
Process for the preparation of polyazo dyestuffsInfo
- Publication number
- GB695534A GB695534A GB1390/52A GB139052A GB695534A GB 695534 A GB695534 A GB 695534A GB 1390/52 A GB1390/52 A GB 1390/52A GB 139052 A GB139052 A GB 139052A GB 695534 A GB695534 A GB 695534A
- Authority
- GB
- United Kingdom
- Prior art keywords
- naphthol
- copper complex
- sulphonic acid
- dyestuff
- copper
- 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
- C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
- C09B35/50—Tetrazo dyes
-
- 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
- C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
- C09B35/36—Trisazo dyes of the type
- C09B35/366—D is diphenyl
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Abstract
Polyazo dyestuffs are made by coupling tetrazotized o-dianisidine with 1 mol. of a compound of the formula <FORM:0695534/IV (c)/1> (or its copper complex) and 1 mol. of the same or another coupling component, and coppering the product in substance or on the fibre; R is the residue of an o-coupling naphthol (which may contain 1-3 sulphonic acid groups) or pyrazolone. Coppering in substance may be carried out in aqueous alkaline solution with a copper-tetrammine complex or in the melt with alkali salts of aliphatic acids with copper salts. The products dye cotton and regenerated cellulose in blue-grey or green-grey shades. In the examples, tetrazotized o-dianisidine is coupled with the following: (1) 1-naphthol-3 : 6-di-sulphonic acid and the copper complex of the dyestuff : 1 : 5 - dihydroxy - 2 - naphthylamine-7 - sulphonic acid --> 1 - naphthol - 4 - sulphonic acid; (2) 1-naphthol-4-sulphonic acid and the copper complex of the dyestuff: amine of (1) --> 1-naphthol-3 : 6-disulphonic acid; (3) chromotropic acid and the copper complex of the dyestuff: amine of (1) --> 1-(p-sulphophenyl) - 3 - methyl - 5 - pyrazolone; (4) copper complex of the monoazo dyestuff of (2) and 1-(p-sulphophenyl) - 3 - methyl - 5 - pyrazolone; (5) 2 mols. of the copper complex of the dyestuff: amine of (1) --> 2-naphthol-4-sulphonic acid. Coupling with the copper complex takes place in a mixture of pyridine and aqueous ammonia. A table is given of other dyestuffs made in the same way and further suitable components are listed.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH695534X | 1951-01-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB695534A true GB695534A (en) | 1953-08-12 |
Family
ID=4529605
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1390/52A Expired GB695534A (en) | 1951-01-19 | 1952-01-17 | Process for the preparation of polyazo dyestuffs |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB695534A (en) |
-
1952
- 1952-01-17 GB GB1390/52A patent/GB695534A/en not_active Expired
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