CH167173A - Process for the production of a new azo dye. - Google Patents
Process for the production of a new azo dye.Info
- Publication number
- CH167173A CH167173A CH167173DA CH167173A CH 167173 A CH167173 A CH 167173A CH 167173D A CH167173D A CH 167173DA CH 167173 A CH167173 A CH 167173A
- Authority
- CH
- Switzerland
- Prior art keywords
- production
- azo dye
- new azo
- dye
- ethyl ester
- Prior art date
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)
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines neuen Azofarbstoffes. Es wurde gefunden, dass man einen neuen Azofarbstoff der Formel
EMI0001.0003
erhält, wenn man den Äthylester der 1-Diazo- 2-benzolcarbonsäure mit dem Di-(acetacetyl)- o. o'-tolidid kuppelt.
Der so erhaltene Farbstoff stellt ein gelbes Pulver dar. Auf geeigneten Substraten, wie zum Beispiel Baumwolle, Wolle, Kunstseide, hergestellt, färbt er diese in leuchtenden sehr echten gelben Tönen.
<I>Beispiel:</I> 33 Teile Äthylester der 1-Amino-2-benzol- aarbonsäure werden wie üblich dianotiert und in eine Lösung von 37,8 Teilen Di-(acet- acetyl)-o. o'-tolidid, 100 Teilen Natrium hydroxydlösung, 15 Teilen Soda und 2000 Teilen Wasser eingetragen. Der gebildete Farbstoff fällt sofort aus. Er wird filtriert, gewaschen und getrocknet.
Process for the production of a new azo dye. It has been found that a new azo dye of the formula
EMI0001.0003
obtained when the ethyl ester of 1-diazo-2-benzenecarboxylic acid is coupled with the di- (acetacetyl) - o. o'-tolidide.
The dye thus obtained is a yellow powder. Produced on suitable substrates such as cotton, wool, rayon, it dyes them in bright, very real yellow tones.
<I> Example: </I> 33 parts of ethyl ester of 1-amino-2-benzene-carboxylic acid are dianotized as usual and poured into a solution of 37.8 parts of di- (acet-acetyl) -o. o'-tolidide, 100 parts of sodium hydroxide solution, 15 parts of soda and 2000 parts of water entered. The dye formed precipitates immediately. It is filtered, washed and dried.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH167173T | 1933-01-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH167173A true CH167173A (en) | 1934-02-15 |
Family
ID=4419627
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH167173D CH167173A (en) | 1933-01-16 | 1933-01-16 | Process for the production of a new azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH167173A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2558843A1 (en) * | 1984-01-26 | 1985-08-02 | Sandoz Sa | MIXTURES OF AZO PIGMENTS, THEIR PREPARATION AND USE |
-
1933
- 1933-01-16 CH CH167173D patent/CH167173A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2558843A1 (en) * | 1984-01-26 | 1985-08-02 | Sandoz Sa | MIXTURES OF AZO PIGMENTS, THEIR PREPARATION AND USE |
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