GB792734A - Improvements in or relating to copper-containing disazo dyestuffs - Google Patents
Improvements in or relating to copper-containing disazo dyestuffsInfo
- Publication number
- GB792734A GB792734A GB5842/56A GB584256A GB792734A GB 792734 A GB792734 A GB 792734A GB 5842/56 A GB5842/56 A GB 5842/56A GB 584256 A GB584256 A GB 584256A GB 792734 A GB792734 A GB 792734A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dyestuffs
- mol
- coupling
- naphthol
- acids
- 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
- C09B45/02—Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
- C09B45/24—Disazo or polyazo compounds
- C09B45/28—Disazo or polyazo compounds containing copper
-
- 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
- C09B35/02—Disazo dyes
- C09B35/039—Disazo dyes characterised by the tetrazo component
- C09B35/08—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of biphenyl
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Abstract
The invention comprises dyestuffs which, in their free acid form, are of formula <FORM:0792734/IV (b)/1> and which may be made by coupling 1 mol. of tetrazotized 4,41-diamino-3,31-dimethoxy-1,11-diphenyl in either order with 1 mol. of a 1-naphthol disulphonic acid and 1 mol. of 2-benzoylamino - 5 - naphthol - 1,7 - disulphonic acid, and treating the product with a copperyielding agent under conditions to remove the methoxy groups. The 3,6-, 3,8- and 4,8-acids are the preferred 1-naphthol disulphonic acids. Coupling is preferably effected in a sodium bicarbonate to carbonate alkaline solution, the second coupling being preferred in the presence of a tertiary organic base. The dyestuffs dye cotton and fibres of regenerated cellulose in bright blue shades. Examples are provided of the preparation of the dyestuffs from the above specified components and their use in dyeing processes.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH792734X | 1955-03-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB792734A true GB792734A (en) | 1958-04-02 |
Family
ID=4537086
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5842/56A Expired GB792734A (en) | 1955-03-18 | 1956-02-24 | Improvements in or relating to copper-containing disazo dyestuffs |
Country Status (2)
Country | Link |
---|---|
CH (1) | CH331215A (en) |
GB (1) | GB792734A (en) |
-
1955
- 1955-03-18 CH CH331215D patent/CH331215A/en unknown
-
1956
- 1956-02-24 GB GB5842/56A patent/GB792734A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CH331215A (en) | 1958-07-15 |
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