CH188213A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH188213A
CH188213A CH188213DA CH188213A CH 188213 A CH188213 A CH 188213A CH 188213D A CH188213D A CH 188213DA CH 188213 A CH188213 A CH 188213A
Authority
CH
Switzerland
Prior art keywords
preparation
dye
azo dye
orange
dyes wool
Prior art date
Application number
Other languages
German (de)
Inventor
Sandoz Chemische Fabri Vormals
Original Assignee
Chem Fab Vormals Sandoz
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chem Fab Vormals Sandoz filed Critical Chem Fab Vormals Sandoz
Publication of CH188213A publication Critical patent/CH188213A/en

Links

Landscapes

  • Thiazole And Isothizaole Compounds (AREA)
  • Coloring (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Darstellung eines     Azofarbstoffes.       Das vorliegende Verfahren betrifft die  Darstellung eines     metallkomplexbildenden          Azofarbstoffes    und ist dadurch gekennzeich  net, dass man die     Diazoverbindung    von     2-Di-          p-toluolsulfamino-l-aminobenzol-5-sulfosäure     mit     1-Phenyl-3-methyl-5-pyrazolon    kuppelt  und aus dem so erhaltenen Farbstoff eine       Toluolsulfogruppe    durch Behandeln mit     ver-          seifenden    Mitteln abspaltet.  



  <I>Beispiel:</I>  49,6 Teile     2-Di-p-toluolsulfamino-l-amino-          benzol-5-sulfosäure    werden in üblicher Weise       diazotiert    und in alkalischem Medium mit  17,4 Teilen     1-Phenyl-3-methyl-5-pyrazolon     gekuppelt. Nach dem     Verseifen    und Isolie  ren erhält man ein gelbes Pulver, welches  Wolle aus saurem Bade gelb färbt. Durch       Nachchromieren    erfolgt Umschlag nach  Orange. Der nach üblichen Methoden in Sub-    stanz hergestellte Chromkomplex färbt Wolle  ebenfalls orange.



  Process for the preparation of an azo dye. The present process relates to the preparation of a metal complex-forming azo dye and is characterized in that the diazo compound of 2-di-p-toluenesulfamino-1-aminobenzene-5-sulfonic acid is coupled with 1-phenyl-3-methyl-5-pyrazolone and off the dye thus obtained cleaves a toluenesulfo group by treatment with saponifying agents.



  <I> Example: </I> 49.6 parts of 2-di-p-toluenesulfamino-l-aminobenzene-5-sulfonic acid are diazotized in the usual way and mixed with 17.4 parts of 1-phenyl-3- in an alkaline medium methyl-5-pyrazolone coupled. After saponification and isolation, a yellow powder is obtained which dyes wool from an acid bath yellow. After chrome plating, it changes to orange. The chromium complex produced in substance by conventional methods also dyes wool orange.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Azo- farbstoffes, dadurch gekennzeichnet, dass man die Diazoverbindung von 2-Di-p-toluol- sulfamino-l-aminobenzol-5-sulfosäure mit 1- Phenyl-3-methyl-5-pyrazolon kuppelt und aus dem so erhaltenen Farbstoff eine Toluol- sulfogruppe durch Behandeln mit verseifen- den Mitteln abspaltet. Der Farbstoff stellt ein gelbes Pulver dar, welches Wolle aus saurem Bade gelb färbt. Claim: Process for the preparation of an azo dye, characterized in that the diazo compound of 2-di-p-toluenesulfamino-1-aminobenzene-5-sulfonic acid is coupled with 1-phenyl-3-methyl-5-pyrazolone and off a toluenesulfo group is eliminated from the dye thus obtained by treatment with saponifying agents. The dye is a yellow powder which dyes wool from an acid bath yellow. Durch Nachchromieren erfolgt Um schlag nach Orange. Der nach üblichen Me thoden in Substanz hergestellte Chromkom plex färbt Wolle ebenfalls orange. After chrome plating, it changes to orange. The chromium complex, which is produced in bulk using conventional methods, also dyes wool orange.
CH188213D 1934-07-28 1935-07-18 Process for the preparation of an azo dye. CH188213A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE188213X 1934-07-28
CH184306T 1935-07-18

Publications (1)

Publication Number Publication Date
CH188213A true CH188213A (en) 1936-12-15

Family

ID=25721005

Family Applications (1)

Application Number Title Priority Date Filing Date
CH188213D CH188213A (en) 1934-07-28 1935-07-18 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH188213A (en)

Similar Documents

Publication Publication Date Title
CH188213A (en) Process for the preparation of an azo dye.
CH188217A (en) Process for the preparation of an azo dye.
CH188218A (en) Process for the preparation of an azo dye.
CH188215A (en) Process for the preparation of an azo dye.
DE520242C (en) Process for the preparation of chromium-containing o-oxyazo dyes
DE553311C (en) Process for the preparation of azo dyes
CH188216A (en) Process for the preparation of an azo dye.
CH188219A (en) Process for the preparation of an azo dye.
CH257028A (en) Process for the production of a metallizable azo dye.
CH195851A (en) Process for the preparation of an oxyazo dye.
CH222699A (en) Process for the preparation of a monoazo dye.
CH90851A (en) Process for preparing an o-oxyazo dye.
CH230906A (en) Process for the preparation of a chromable monoazo dye.
CH205799A (en) Process for the preparation of a monoazo dye.
CH189042A (en) Process for the preparation of a monoazo dye.
CH179673A (en) Process for the preparation of a monoazo dye.
CH183872A (en) Process for the preparation of an azo dye.
CH235204A (en) Process for the preparation of a copper-containing disazo dye.
CH246182A (en) Process for the preparation of a chromable azo dye.
CH222693A (en) Process for the preparation of a monoazo dye.
CH170914A (en) Process for the preparation of an azo dye.
CH222698A (en) Process for the preparation of a monoazo dye.
CH222697A (en) Process for the preparation of a monoazo dye.
CH188212A (en) Process for the preparation of an azo dye.
CH222695A (en) Process for the preparation of a monoazo dye.