CH253713A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH253713A
CH253713A CH253713DA CH253713A CH 253713 A CH253713 A CH 253713A CH 253713D A CH253713D A CH 253713DA CH 253713 A CH253713 A CH 253713A
Authority
CH
Switzerland
Prior art keywords
amino
azo dye
preparation
dye
sulfonic acid
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft Ciba
Original Assignee
Ciba Geigy
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 Ciba Geigy filed Critical Ciba Geigy
Publication of CH253713A publication Critical patent/CH253713A/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

  

  Verfahren zur Herstellung eines     Azofarbstoffes.       Es wurde gefunden, dass man zu einem       neuen,    wertvollen     Azofa,rbstoff    gelangt,       wenn    man     diazotierte    2 -     Amino    - 4 -     äthoxy-          1        ,enzoesäiire    mit     2-(4'-P'henoxyphenyl)-amino-          a-oxyriaphthalin-7-sulfonsä.ure    vereinigt.  



  Der neue Farbstoff     stellt    in trockenem       Zustand    ein dunkles Pulver dar, das die       Zellulo,#efaser    nach dem ein- oder     zweibadi-          Oun        Nachkupferungsverfahren    in violetten  Tönen von guter Licht- und Waschechtheit       1\ärbt.     



  Die Kupplung der     diazotierten        2-Amino-          l-ä        tlioxy-benzoesäure    mit der     2-(4'-Phenoxy-          ljlienyl)-amino-5-oxynaphtha.lin-7-sulfonsäure          crfol@;t    vorzugsweise in alkalischem, z. B.     al-          hali-ea.rbonatalkalischem    Medium.

      <I>Beispiel:</I>  179 Teile     2-Amino-4-äthoxybenzoesäure          v:erden    dianotiert und die     Diazoverbindung       mit einer Lösung,     bestehend    aus 407 Teilen  2 - (4' -     Phenoxy-phenyl)        -amino-5-oxynaphtha-          lin-7-sulfonsäure,    300 Teilen     Natriumcarbo-          nat    und 2000 Teilen Wasser vereinigt. Nach  beendeter Kupplung wird der ausgefallene       Monoazofarbstoff        abfiltriert    und getrocknet.



  Process for the preparation of an azo dye. It has been found that a new, valuable azo dye can be obtained if diazotized 2-amino-4-ethoxy-1-enzoic acids are mixed with 2- (4'-phenoxyphenyl) -amino-a-oxyriaphthalene-7- sulfonic acid combined.



  When dry, the new dye is a dark powder that tones the cellulosic fibers in purple shades of good lightfastness and washfastness using the one or two bath copper plating process.



  The coupling of the diazotized 2-amino-1-oxy-benzoic acid with 2- (4'-phenoxy-ljlienyl) -amino-5-oxynaphtha.lin-7-sulfonic acid is preferably in alkaline, e.g. B. al-hali-ea.rbonate alkaline medium.

      <I> Example: </I> 179 parts of 2-amino-4-ethoxybenzoic acid v: ground and the diazo compound with a solution consisting of 407 parts of 2 - (4 '- phenoxyphenyl) -amino-5-oxynaphtha- lin-7-sulfonic acid, 300 parts of sodium carbonate and 2000 parts of water combined. After the coupling has ended, the precipitated monoazo dye is filtered off and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man di- azotierte 2-Amino-4-äthoxy-benzoesäure mit 2 - .4'.- Phenoxyphenyl) -amino-5-oxynaphtha- lin-7-sulfonsäure vereinigt. PATENT CLAIM: Process for the production of an azo dye, characterized in that diazo-4-amino-4-ethoxy-benzoic acid is combined with 2-4'-phenoxyphenyl) -amino-5-oxynaphthalin-7-sulfonic acid . Der neue Farbstoff stellt in trockenem Zustand ein dunkles Pulver dar, das die Zellulosefaser nach dem ein- oder zweibadi- gen Nachkupferungsverfahren in violetten Tönen von guter Licht- und Waschechtheit färbt. When dry, the new dye is a dark powder that colors the cellulose fibers in violet shades of good lightfastness and washfastness using the one- or two-bath post-copper plating process.
CH253713D 1946-09-05 1946-09-05 Process for the preparation of an azo dye. CH253713A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH253713T 1946-09-05

Publications (1)

Publication Number Publication Date
CH253713A true CH253713A (en) 1948-03-31

Family

ID=4470147

Family Applications (1)

Application Number Title Priority Date Filing Date
CH253713D CH253713A (en) 1946-09-05 1946-09-05 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH253713A (en)

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