GB679604A - Manufacture of new azo-dyestuffs - Google Patents
Manufacture of new azo-dyestuffsInfo
- Publication number
- GB679604A GB679604A GB6413/51A GB641351A GB679604A GB 679604 A GB679604 A GB 679604A GB 6413/51 A GB6413/51 A GB 6413/51A GB 641351 A GB641351 A GB 641351A GB 679604 A GB679604 A GB 679604A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- disulphonic acid
- dyestuffs
- diazo
- diacetoacetylamino
- 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
- C09B33/02—Disazo dyes
- C09B33/153—Disazo dyes in which the coupling component is a bis-(aceto-acetyl amide) or a bis-(benzoyl-acetylamide)
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
- H01J29/36—Photoelectric screens; Charge-storage screens
- H01J29/39—Charge-storage screens
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Abstract
4 : 41 - Diacetoacetylamino - stilbene - 2 : 21-disulphonic acid is prepared by reacting 4 : 41-diaminostilbene-2 : 21-disulphonic acid with an acetoacylating agent. An example is given of the reaction using diketene, the product being isolated as its disodium salt.ALSO:The invention comprises dyestuffs of the formula <FORM:0679604/IV (c)/1> where R1 and R2 are each the residue of a diazo component containing a metallizable group in the o-position. These are prepared by coupling 4 : 41 - diacetoacetylaminostilbene - 2 : 21 - disulphonic acid with 2 mols. of a suitable diazo compound, preferably derived from an o-carboxyamine free from further solubilizing groups. The metallizable group may, however, be hydroxy or carboxymethoxy. Other substituents in the diazo compound may be halogen, alkyl, alkoxy, nitro, acylamino and arylazo; suitable compounds are listed. The dyestuffs may be used for dyeing and printing animal fibres such as wool, silk and leather and also cotton, linen and regenerated cellulose. They may be metallized by normal methods in substance, in the dyebath or on the fibre, to give compounds of, e.g., copper, chromium, iron, cobalt or nickel. The processes of Specifications 455,274 and 619,969 are suitable. In the examples the diazo derivatives of the following amines are coupled with 4 : 41-diacetoacetylamino - stilbene - 2 : 21 - disulphonic acid:-2 - amino - 5 - benzoylaminobenzoic acid, 2 - amino - 5 - chlorobenzoic acid and 4 - nitro - 2 - aminophenol. A further example is given of the dyeing of cotton, with three alternative coppering treatments.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH679604X | 1950-03-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB679604A true GB679604A (en) | 1952-09-17 |
Family
ID=4528374
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB6413/51A Expired GB679604A (en) | 1950-03-17 | 1951-03-16 | Manufacture of new azo-dyestuffs |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR1017660A (en) |
GB (1) | GB679604A (en) |
-
1950
- 1950-05-12 FR FR1017660D patent/FR1017660A/en not_active Expired
-
1951
- 1951-03-16 GB GB6413/51A patent/GB679604A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR1017660A (en) | 1952-12-17 |
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