CH192037A - Process for the production of a new azo dye. - Google Patents

Process for the production of a new azo dye.

Info

Publication number
CH192037A
CH192037A CH192037DA CH192037A CH 192037 A CH192037 A CH 192037A CH 192037D A CH192037D A CH 192037DA CH 192037 A CH192037 A CH 192037A
Authority
CH
Switzerland
Prior art keywords
azo dye
production
new azo
new
dye
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 CH192037A publication Critical patent/CH192037A/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 die     Diazo-          verbindung    des     1-Aminobenzol-2.4-dibutyldi-          sulfons    in saurer Lösung mit     1-Amino-5-ogy-          naphthalin-2-sulfonsäure    vereinigt. Der neue  Farbstoff bildet ein dunkles Pulver, das sich in  Wasser mit blauer Farbe löst und Wolle aus  sauren Bade in echten blauen Tönen färbt.

    <I>Beispiel:</I>  333 Teile     1-Aminobenzol-2.4-dibutyldi-          sulfon    werden in verdünnter Essigsäure mit  250 Teilen Salzsäure vom spezifischen Ge  wicht 1,15 verrührt und langsam mit einer  konzentrierten Lösung von 69 Teilen Natrium  nitrit versetzt. In diese durch Zusatz von  Eis gekühlte     Diazolösung    lässt man eine neu  tralisierte Lösung von 239 Teilen     1-Amino-          5-ogynaphthalin-2-sulfonsäure        zutropfen.    Die       Farbstoffbildung    kann durch Zusatz neutrali  sierender Mittel, wie z. B.     Natriumacetat       oder     Natriumformiat    beschleunigt werden.

    Man kann die Umsetzung auch bei mässig  erhöhter Temperatur. -durchführen. Der ent  standene Farbstoff. wird     abfiltriert,    durch  Lösen in heissem Wasser und Zugabe eines  Alkalis,     Aussalzen    und Filtrieren und Trocknen  isoliert.



  Process for the production of a new azo dye. It has been found that a new azo dye is obtained when the diazo compound of 1-aminobenzene-2,4-dibutyl disulfone is combined in acidic solution with 1-amino-5-ogynaphthalene-2-sulfonic acid. The new dye forms a dark powder that dissolves in water with a blue color and dyes wool from acid baths in true blue tones.

    <I> Example: </I> 333 parts of 1-aminobenzene-2,4-dibutyl disulfone are stirred in dilute acetic acid with 250 parts of hydrochloric acid with a specific weight of 1.15 and slowly mixed with a concentrated solution of 69 parts of sodium nitrite. A neutralized solution of 239 parts of 1-amino-5-ogynaphthalene-2-sulfonic acid is added dropwise to this diazo solution, which has been cooled by adding ice. The dye formation can be neutralized by adding agents such. B. sodium acetate or sodium formate can be accelerated.

    The reaction can also be carried out at a moderately elevated temperature. -carry out. The resulting dye. is filtered off, isolated by dissolving in hot water and adding an alkali, salting out and filtering and drying.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Azofarbstoffes, dädurch gekennzeichnet, dass man die Diazoverbindung des 1-Aminobenzol- 2.4-dibutyldisulfons in saurem Medium mit 1-Amino-5-ogynaphthälin-2-sulfonsäure ver einigt. Der neue Farbstoff bildet ein dunkles Pulver, das sich in Wasser mit blauer Farbe löst und Wolle aus saurem Bade in echten blauen Tönen färbt. PATENT CLAIM: Process for the preparation of a new azo dye, characterized in that the diazo compound of 1-aminobenzene-2,4-dibutyldisulfone is combined in an acidic medium with 1-amino-5-ogynaphthälin-2-sulfonic acid. The new dye forms a dark powder that dissolves in water with a blue color and dyes wool from an acid bath in true blue tones.
CH192037D 1935-09-07 1935-09-07 Process for the production of a new azo dye. CH192037A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH192037T 1935-09-07
CH190423T 1935-09-07

Publications (1)

Publication Number Publication Date
CH192037A true CH192037A (en) 1937-07-15

Family

ID=25721977

Family Applications (1)

Application Number Title Priority Date Filing Date
CH192037D CH192037A (en) 1935-09-07 1935-09-07 Process for the production of a new azo dye.

Country Status (1)

Country Link
CH (1) CH192037A (en)

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