CH222799A - Process for the production of a new azo dye. - Google Patents

Process for the production of a new azo dye.

Info

Publication number
CH222799A
CH222799A CH222799DA CH222799A CH 222799 A CH222799 A CH 222799A CH 222799D A CH222799D A CH 222799DA CH 222799 A CH222799 A CH 222799A
Authority
CH
Switzerland
Prior art keywords
azo dye
production
new azo
amino
new
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Ind Basel filed Critical Chem Ind Basel
Publication of CH222799A publication Critical patent/CH222799A/en

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
    • C09B45/14—Monoazo compounds
    • C09B45/16—Monoazo compounds containing chromium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

  

      'Verfahren    zur Herstellung eines neuen     Azofarbstoffes.       Es wurde gefunden, dass man     einen    neuen       Azofarbstoff    erhält, wenn man     diazotiertes          1-Amino-2-oxy-4-nitrobenzol    mit dem     1-          Phenyl    - 3 -     methyl    - 5 -     pyrazolon,    das aus 1  Amino- 2 -     (4'-methyl)-phenylsulfon-5-sulfon-          säure    und     Acetessigester    erhältlich ist, ver  einigt.  



  Der neue Farbstoff färbt Wolle aus sau  rem Bade in orangen Tönen, die durch     Nach-          chromieren    rein     blaustichig    rot werden.  



  <I>Beispiel:</I>  Man löst 15,4 Teile     1-Amino-2-oxy-4-          nitrobenzol    in 30 Teilen Salzsäure von 30  und 100 Teilen Wasser. Man fügt so viel  Eis zu, dass die Temperatur auf 0   fällt und       diazotiert    hierauf mit einer Lösung von  7 Teilen     Natriumnitrit    in 30 Teilen     Wasser.     Diesen     Diazobrei    giesst man in eine Lösung  von 35 Teilen     Natriumcarbonat    und 40,8  Teile des     Pyrazolous    der Formel  
EMI0001.0025     
    in 300 Teilen Wasser und etwas     Eis.    Nach  .erfolgter Kupplung wird .der Farbstoff aus  gesalzen, filtriert und getrocknet.



      'Process for the production of a new azo dye. It has been found that a new azo dye is obtained if diazotized 1-amino-2-oxy-4-nitrobenzene is used with 1-phenyl - 3 - methyl - 5 - pyrazolone, which is obtained from 1 amino- 2 - (4'- methyl) -phenylsulfon-5-sulfonic acid and acetoacetic ester is available, united.



  The new dye dyes wool from acidic baths in orange tones, which are given a purely bluish red tint when they are chromed.



  <I> Example: </I> 15.4 parts of 1-amino-2-oxy-4-nitrobenzene are dissolved in 30 parts of hydrochloric acid in 30 and 100 parts of water. So much ice is added that the temperature falls to 0 and diazotization is then carried out with a solution of 7 parts of sodium nitrite in 30 parts of water. This diazo paste is poured into a solution of 35 parts of sodium carbonate and 40.8 parts of the pyrazolous of the formula
EMI0001.0025
    in 300 parts of water and some ice. After coupling has taken place, the dye is salted out, filtered and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Azofarbstoffes, dadurch gekennzeichnet, dass man diazotiertes 1-Amino-2-oxy-4-nitroben- zol mit dem 1-Phenyl-3-methyl-5-pyrazolon, das aus 1-Amino-2-(4'-methyl)-phenylsulfon- 5-sulfonsäure und Acetessigester erhältlich ist, vereinigt. Der neue Farbstoff färbt Wolle aus sau rem Bade in orangen Tönen, die durch Nach chromieren rein blaustichig rot werden. PATENT CLAIM: Process for the preparation of a new azo dye, characterized in that diazotized 1-amino-2-oxy-4-nitroben- zene with 1-phenyl-3-methyl-5-pyrazolone, which is obtained from 1-amino-2- (4'-methyl) -phenylsulfon-5-sulfonic acid and acetoacetic ester is available, combined. The new dye dyes wool from acidic baths in orange tones, which turn into a purely bluish red when chromium is applied.
CH222799D 1941-09-20 1941-09-20 Process for the production of a new azo dye. CH222799A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH222799T 1941-09-20

Publications (1)

Publication Number Publication Date
CH222799A true CH222799A (en) 1942-08-15

Family

ID=4452763

Family Applications (1)

Application Number Title Priority Date Filing Date
CH222799D CH222799A (en) 1941-09-20 1941-09-20 Process for the production of a new azo dye.

Country Status (1)

Country Link
CH (1) CH222799A (en)

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