CH167032A - Process for the production of a new azo dye. - Google Patents

Process for the production of a new azo dye.

Info

Publication number
CH167032A
CH167032A CH167032DA CH167032A CH 167032 A CH167032 A CH 167032A CH 167032D A CH167032D A CH 167032DA CH 167032 A CH167032 A CH 167032A
Authority
CH
Switzerland
Prior art keywords
production
azo dye
cresol
new azo
blue
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 CH167032A publication Critical patent/CH167032A/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)
  • Coloring (AREA)

Description

  

  Zusatzpatent zum     Hauptpatent    Nr. 164199.    Verfahren zur Herstellung eines neuen     Azofarbstof%s.       Es wurde gefunden,     .dass    man einen neuen       Azofarbstoff    erhält,

   wenn man die     Diazo-          verbindung    des in     o-Stellung    zur     OH-Gruppe          des        p-Kresolkernes        sulfonierten    Esters aus       p-Kresol    und     p-Nitranilin-o-sulfonsäure    in  saurem Medium mit     2-Amino-8-nalahthol-6-          sulfonsäure    vereinigt.  



  Der neue Farbstoff bildet ein blaues  Pulver, das sich in Wasser mit     violett-blauer     Farbe löst und Wolle aus saurem Bade in  echten blauvioletten Tönen anfärbt.  



       Beispiel:     410 Teile des     Natriumsalzes    ,des in     o-Stel-          lung    zur     OH-Gruppe    des     p-Kresolkernes    sul  fonierten Esters aus     p-Kresol    und     p-Nitralin-          o-sulfonsäure    werden in     salzsaurer    wässeriger       Lösung    durch Zugabe von 69 Teilen     Natrium-          nitrit        diazotiert.    In die     Diazosuspension    trägt  man unter Rühren eine neutrale Lösung von  289 Teilen 

  2-Amino-8-oxynaphthalin-6-sul-         fonsäure    ein und rührt, gegebenenfalls unter  Zugabe von     Natriumacetat,    bis die Kupplung  beendet ist. Der Farbstoff kann durch Zu  gabe von     Chlornatrium    abgeschieden wer  den. Er wird filtriert und     getrocknet.  



  Additional patent to main patent No. 164199. Process for the production of a new azo dye% s. It has been found that a new azo dye is obtained

   when the diazo compound of the ester, sulfonated in the o-position to the OH group of the p-cresol nucleus, of p-cresol and p-nitroaniline-o-sulfonic acid is combined with 2-amino-8-nalahthol-6-sulfonic acid in an acidic medium.



  The new dye forms a blue powder that dissolves in water with a violet-blue color and dyes wool from an acid bath in real blue-violet tones.



       Example: 410 parts of the sodium salt of the ester of p-cresol and p-nitralin-o-sulfonic acid which is sulfonated in the o-position to the OH group of the p-cresol nucleus are converted into hydrochloric acid by adding 69 parts of sodium nitrite diazotized. A neutral solution of 289 parts is added to the diazo suspension with stirring

  2-Amino-8-oxynaphthalene-6-sulphonic acid and stirred, optionally with the addition of sodium acetate, until the coupling is complete. The dye can be deposited by adding sodium chloride to who the. It is filtered and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Azofarbstoffes, d"idurch gekennzeichnet, .dass man die Diazoverbindung des in o-Stellung zur OH-Gruppe des p-Kresolkernes sulfonier- ten Esters aus p-Kresol und p-Nitranilin-o- sulfonsäure in saurem Medium mit 2-Amino- 8-naphthol-6-sulfonsäure vereinigt. PATENT CLAIM: Process for the production of a new azo dye, characterized by the fact that the diazo compound of the ester which is sulfonated in the o-position to the OH group of the p-cresol nucleus is composed of p-cresol and p-nitroaniline-o-sulfonic acid in acidic Medium with 2-amino-8-naphthol-6-sulfonic acid combined. Der neue Farbstoff bildet ein blaues Pul ver, das sich in Wasser mit violett-blauer Farbe löst und Wolle aus saurem Bade in blauvioletten Tönen anfärbt. The new dye forms a blue powder that dissolves in water with a violet-blue color and dyes wool from an acid bath in blue-violet shades.
CH167032D 1932-05-15 1932-05-15 Process for the production of a new azo dye. CH167032A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH167032T 1932-05-15
CH164199T 1933-09-30

Publications (1)

Publication Number Publication Date
CH167032A true CH167032A (en) 1934-01-31

Family

ID=25717930

Family Applications (1)

Application Number Title Priority Date Filing Date
CH167032D CH167032A (en) 1932-05-15 1932-05-15 Process for the production of a new azo dye.

Country Status (1)

Country Link
CH (1) CH167032A (en)

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