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CH215587A - Process for the preparation of a monoazo dye. - Google Patents

Process for the preparation of a monoazo dye.

Info

Publication number
CH215587A
CH215587A CH215587DA CH215587A CH 215587 A CH215587 A CH 215587A CH 215587D A CH215587D A CH 215587DA CH 215587 A CH215587 A CH 215587A
Authority
CH
Switzerland
Prior art keywords
monoazo dye
preparation
dye
dimethoxybenzene
dibutylamine
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH215587A publication Critical patent/CH215587A/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
    • C09B29/10—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group

Landscapes

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

Description

  

  Verfahren zur Herstellung eines     Monoazofarbstoffes.       Gegenstand des vorliegenden Zusatz  patentes ist ein Verfahren zur Herstellung  eines     Monoazofarbstoffes,    welches dadurch  gekennzeichnet ist, dass man die     Diazo-          verbindung    von     1-Amino-2    .     5-dimethoxyben-          zol-4-sulfonyl-n-dibutylamin    mit     ss-Naphthol     kuppelt.  



       Beispiel:     17,2 Gewichtsteile 1-     Amino    - 2 . 5 -     di-          methoxybenzol-4-sulfonyl-n-dibutylamin    wer  den in der üblichen Weise     diazotiert.    Hierauf  versetzt man die     Diazolösung    zur Bindung  der überschüssigen Mineralsäure mit Na  triumacetat und rührt sie in eine Lösung von  7,2 Gewichtsteilen     ss-Naphthol    in verdünnter  Natronlauge ein. Nach Beendigung der  Kupplung wird der entstandene Farbstoff       abfiltriert,    gut ausgewaschen und getrocknet.

      Er stellt ein rotes Pulver dar, das sich in  Aceton,     Butylacetat    und andern organischen  Lösungsmitteln leicht löst und     Cellulose-          esterlacke    in lebhaften, blaustichig roten  Tönen färbt.



  Process for the preparation of a monoazo dye. The subject of the present additional patent is a process for the production of a monoazo dye, which is characterized in that the diazo compound of 1-amino-2. 5-dimethoxybenzene-4-sulfonyl-n-dibutylamine couples with β-naphthol.



       Example: 17.2 parts by weight 1- amino - 2. 5 - dimethoxybenzene-4-sulfonyl-n-dibutylamine who diazotized in the usual way. The diazo solution is then added to bind the excess mineral acid with sodium acetate and it is stirred into a solution of 7.2 parts by weight of ß-naphthol in dilute sodium hydroxide solution. After the coupling has ended, the resulting dye is filtered off, washed well and dried.

      It is a red powder that dissolves easily in acetone, butyl acetate and other organic solvents and colors cellulose ester varnishes in vivid, bluish red tones.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Mono- azofarbstoffes, dadurch gekennzeichnet, dass man die Diazoverbindung von 1-Amino-2. 5 dimethoxybenzol-4-.sulfonylr n-dibutylamin mit ss-Naphthol kuppelt. Der erhaltene Farbstoff stellt ein rotes Pulver dar, das sich in Aceton, Butylacetat und andern organischen Lösungsmitteln leicht löst und Celluloseesterlacke in lebhaf ten blaustichig roten Tönen färbt. Claim: Process for the production of a monoazo dye, characterized in that the diazo compound of 1-amino-2. 5-dimethoxybenzene-4-sulfonylr n-dibutylamine couples with ss-naphthol. The dye obtained is a red powder that dissolves easily in acetone, butyl acetate and other organic solvents and colors cellulose ester coatings in vivid bluish red tones.
CH215587D 1938-04-16 1939-03-30 Process for the preparation of a monoazo dye. CH215587A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE215587X 1938-04-16
CH213056T 1939-03-30

Publications (1)

Publication Number Publication Date
CH215587A true CH215587A (en) 1941-06-30

Family

ID=25725351

Family Applications (1)

Application Number Title Priority Date Filing Date
CH215587D CH215587A (en) 1938-04-16 1939-03-30 Process for the preparation of a monoazo dye.

Country Status (1)

Country Link
CH (1) CH215587A (en)

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