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CH257024A - Process for the preparation of an ester type azo dye derivative. - Google Patents

Process for the preparation of an ester type azo dye derivative.

Info

Publication number
CH257024A
CH257024A CH257024DA CH257024A CH 257024 A CH257024 A CH 257024A CH 257024D A CH257024D A CH 257024DA CH 257024 A CH257024 A CH 257024A
Authority
CH
Switzerland
Prior art keywords
azo dye
preparation
ester type
dye derivative
oxy
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 CH257024A publication Critical patent/CH257024A/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
    • C09B43/00—Preparation of azo dyes from other azo compounds
    • C09B43/18—Preparation of azo dyes from other azo compounds by acylation of hydroxyl group or of mercapto group

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

Description

  

      Zusatzpatent    zum Hauptpatent Nr. 244049.    Verfahren zur Herstellung eines     esterartigen        Azofarbstoffderivates.        \       Gegenstand des vorliegenden     Zusatz-          patentes    ist ein Verfahren zur     Herstellung     eines     esterartigen    Derivates eines     o,o'-Dioxy-          azofarbstoffes.,    dadurch     gekennzeichnet,    dass       der        Azofarbs,toff    aus.

       diazotiertem        1-Oxy-2-          amino-4-chlorbenzol    und     1-Oxy-5,8-diehlor-          naphthalin    in Gegenwart von     Pyridin    mit       Benzoesäure-3-sulfochlorid        verestert    wird.  



  Das neue     Farbstoffderivat    bildet nach  dem Aufarbeiten und Trocknen ein gelbbrau  nes,     wasserlösliches    Pulver. Es färbt Wolle  nach dem     Einbadverfahren    in     Gegenwart     chromabgebender Mittel in     rotstichig    blauen  Tönen.  



       Beispiel.:     36 Teile des     Azofarbstoffes    aus     diazotier-          tem        1-Oxy-2-amino-4-chlorbenzol        und        1-Oxy-          5,8-dichlornaphthalin    werden wie folgt ver  estert: Man     löst    zunächst 44 bis 60 Teile       Benzoesäure-3-sulfochlorid    in     etwa    180 Tei  len     Pyridin    bei 50 bis 60 . Dann gibt man  bei etwa 40  die angegebenem 36 Teile des  oben genannten     Azofarbstoffes    unter gutem    Rühren zu.

   Nachdem man einige Stunden  bei etwa 50  verrührt hat,     destilliert    man das       Pyridin    im Vakuum ab, gibt die     Masse    in  etwa 500 Teile einer 10      %        igen        Natriumchlo-          ridlösung    und rührt, bis der Farbstoff in der  Lösung gleichmässig verteilt ist. Er     wird     dann     abfiltriert,    mit     Natriumchloridlösung     gewaschen und im Vakuum getrocknet.



      Additional patent to main patent no. 244049. Process for the production of an ester-like azo dye derivative. The subject of the present additional patent is a process for the production of an ester-like derivative of an o, o'-dioxy azo dye., Characterized in that the azo dye consists of.

       diazotized 1-oxy-2-amino-4-chlorobenzene and 1-oxy-5,8-diehlor- naphthalene is esterified with benzoic acid-3-sulfochloride in the presence of pyridine.



  The new dye derivative forms a yellowish-brown, water-soluble powder after working up and drying. It dyes wool in reddish blue tones using the single bath method in the presence of chromium-releasing agents.



       Example: 36 parts of the azo dye from diazotized 1-oxy-2-amino-4-chlorobenzene and 1-oxy-5,8-dichloronaphthalene are esterified as follows: 44 to 60 parts of benzoic acid-3-sulfochloride are first dissolved in about 180 parts of pyridine at 50 to 60. Then, at about 40, the indicated 36 parts of the above azo dye are added with thorough stirring.

   After stirring for a few hours at about 50, the pyridine is distilled off in vacuo, the mass is poured into about 500 parts of a 10% sodium chloride solution and stirred until the dye is evenly distributed in the solution. It is then filtered off, washed with sodium chloride solution and dried in vacuo.

Claims (1)

PATENTANSPRUCH: Verfahren zur Hentetlung eines esterartz- gen Derivates eines o,o'-Dioxyazofarbs.toffes, dadurch gekennzeichnet, dass der Azofarb- stoff aus diazotiertem 1-Oxy-2-amino-4-chlor- benzol und 1-Oxy-5,8-dichlornaphthalin in Gegenwart von Pyridin mit Benzoesäure-3- sulfochlorid verestert wird. PATENT CLAIM: Process for the development of an ester-like derivative of an o, o'-dioxyazo dye, characterized in that the azo dye is made from diazotized 1-oxy-2-amino-4-chlorobenzene and 1-oxy-5, 8-dichloronaphthalene is esterified with benzoic acid-3-sulfochloride in the presence of pyridine. Das neue Farbstoffderivat bildet nach dem Aufarbeiten und Trocknen ein gelbbrau nes, wasserlösliches Pulver. Es färbt Wolle nach dem Einbadverfahren in Gegenwart chromabgebender Mittel- in rotstichig blauen Tönen. The new dye derivative forms a yellowish-brown, water-soluble powder after working up and drying. It dyes wool in reddish blue tones using the single bath process in the presence of chromium-releasing mediums.
CH257024D 1945-08-22 1945-08-22 Process for the preparation of an ester type azo dye derivative. CH257024A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH257024T 1945-08-22
CH244049T 1945-08-22

Publications (1)

Publication Number Publication Date
CH257024A true CH257024A (en) 1948-09-15

Family

ID=25728888

Family Applications (1)

Application Number Title Priority Date Filing Date
CH257024D CH257024A (en) 1945-08-22 1945-08-22 Process for the preparation of an ester type azo dye derivative.

Country Status (1)

Country Link
CH (1) CH257024A (en)

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