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CH234948A - Process for the production of a new azo dye. - Google Patents

Process for the production of a new azo dye.

Info

Publication number
CH234948A
CH234948A CH234948DA CH234948A CH 234948 A CH234948 A CH 234948A CH 234948D A CH234948D A CH 234948DA CH 234948 A CH234948 A CH 234948A
Authority
CH
Switzerland
Prior art keywords
production
azo dye
new azo
new
acid
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 CH234948A publication Critical patent/CH234948A/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
    • C09B29/00—Monoazo dyes prepared by diazotising and coupling
    • C09B29/24—Monoazo dyes prepared by diazotising and coupling from coupling components containing both hydroxyl and amino directing groups
    • C09B29/28—Amino naphthols
    • C09B29/30—Amino naphtholsulfonic acid

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    erhält, .wenn man     diazotiertes     4 -     Amino    - 3,2',     5'-trimethoxy    -     6-chlordiphenyl     mit     1-(4'-Chlor)-benzolsulfonylamino-8-oxy-          naphthaIin-3,6-disulfonsäure    vereinigt.  



  Der getrocknete neue Farbstoff bildet ein  bordeauxrotes Pulver, das sich in konzen  trierter Schwefelsäure mit blaugrüner     Farbe     löst und Wolle aus saurem Bade in sehr  reinen stark     rotsti.chig-violetten    Tönen färbt.  <I>Beispiel:

  </I>       @29'j5    Teile     4-Amino-3,2',5'-trimethoxy-6-          chlordiphenyl    werden mit Salzsäure und  6,9, Teilen     Natriumnitrit        diazotiert.    Die erhal  tene     Diazolösung    lässt man unter Kühlung  in eine überschüssiges     Natriumcarbonat    ent  haltende Lösung von 49,35 Teilen 1-(4'       Chlor)-benzoIsulfonylamino-8-oxynaphthalin-          3,6-disulfonsäure    unter Rühren einlaufen.    Die     Kupplung    erfolgt rasch.

   Nach Beendi  gung der     Kupplunig    wird der zum Teil aus  geschiedene Farbstoff durch Zusatz von     Na-          triumchlorid    vollständig abgeschieden und  filtriert.



  Process for the production of a new azo dye. It has been found that a new azo dye is obtained if diazotized 4-amino-3,2 ', 5'-trimethoxy-6-chlorodiphenyl with 1- (4'-chloro) -benzenesulfonylamino-8-oxynaphthaIine- 3,6-disulfonic acid combined.



  The dried new dye forms a burgundy red powder that dissolves in concentrated sulfuric acid with a blue-green color and dyes wool from an acid bath in very pure, strongly reddish-violet shades. <I> example:

  </I> @ 29'j5 parts of 4-amino-3,2 ', 5'-trimethoxy-6-chlorodiphenyl are diazotized with hydrochloric acid and 6.9 parts of sodium nitrite. The diazo solution obtained is allowed to run, with cooling, into a solution of 49.35 parts of 1- (4 'chloro) -benzoIsulphonylamino-8-oxynaphthalene-3,6-disulphonic acid containing excess sodium carbonate, while stirring. The coupling is quick.

   After the coupling has ended, the dyestuff which has partly separated out is completely separated off by adding sodium chloride and filtered.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Azofarbstoffes, dadurch gekennzeichnet, dass man diazotiertes 4-Amino-3,2',5'-trimethoxy- h; PATENT CLAIM: Process for the production of a new azo dye, characterized in that diazotized 4-amino-3,2 ', 5'-trimethoxy- h; - chlordiphenyl mit 1 - (4' - Chlor) - benzol- snlf onylamino - 8 -oxynaphthalin-3-, 6-disulf on- säure vereinigt. Der getrocknete neue Farbstoff bildet ein bordeauxrotes Pulver, das sich in konzen trierter Schwefelsäure mit blaugrüner Farbe löst und Wolle aus saurem Bade in sehr reinen stark rotstichig-violetten Tönen färbt. - Chlorodiphenyl combined with 1- (4 '- chlorine) - benzene-snlf onylamino-8-oxynaphthalene-3-, 6-disulphonic acid. The dried new dye forms a burgundy red powder that dissolves in concentrated sulfuric acid with a blue-green color and dyes wool from an acid bath in very pure, strong reddish-purple tones.
CH234948D 1940-10-17 1940-10-17 Process for the production of a new azo dye. CH234948A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH234948T 1940-10-17
CH233185T 1940-10-17

Publications (1)

Publication Number Publication Date
CH234948A true CH234948A (en) 1944-10-31

Family

ID=25727787

Family Applications (1)

Application Number Title Priority Date Filing Date
CH234948D CH234948A (en) 1940-10-17 1940-10-17 Process for the production of a new azo dye.

Country Status (1)

Country Link
CH (1) CH234948A (en)

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