CH211823A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH211823A
CH211823A CH211823DA CH211823A CH 211823 A CH211823 A CH 211823A CH 211823D A CH211823D A CH 211823DA CH 211823 A CH211823 A CH 211823A
Authority
CH
Switzerland
Prior art keywords
azo dye
preparation
dye
diazo
nitrobenzene
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 CH211823A publication Critical patent/CH211823A/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
    • C09B43/20—Preparation of azo dyes from other azo compounds by acylation of hydroxyl group or of mercapto group with monocarboxylic acids, carbamic acid esters or halides, mono- isocyanates or haloformic acid esters
    • C09B43/202—Aliphatic, cycloaliphatic, araliphatic carboxylic acids

Description

  

  Zusatzpatent zum Hauptpatent Nr. 208950.    Verfahren zur Herstellung eines     Azofarbstoffes:       Es wurde gefunden, dass man einen neuen  wertvollen     Azofarbstoff    erhält,     wenn    man       Butyloxäthylaminobenzol,    die     Diazoverbin-          dung    des     1-Amino-2,6-dichlor-4-nitrobenzols     und     Maleinsäureanhydrid    derart aufeinander  einwirken lässt,

   dass der saure     Maleinsäure-          ester    des     Butyloxäthylaminobenzols    gebildet  wird und der     Diazorest    in     4-Stellung    zur ter  tiären     Aminogruppe    eintritt.  



  Der so erhaltene Farbstoff bildet     ein     dunkles Pulver, das sich in Form eines Al  kalisalzes in Wasser mit     brauner    Farbe löst  und     Acetatkunstseide    aus wässriger Lösung  in braunen Tönen färbt.

           Beispiel:       In die     Diazolösung,    die man aus 207     Tei-          lenl-Amino-2,        6-dichlor-4-nitrobenzol    herstellt,  trägt man 291 Teile des sauren     1Vlaleinsäure-          esters    des     Butyloxäthylaminobenzols,    erhal  ten durch Umsetzung von     Maleinsäureanhy-          drid    mit     Butyloxäthylaminobenzol,    der in  Form einer     wässrigen    Lösung     eines        Ammo-          niumsalzes    vorliegt, ein.

   Man     führt    die  Kupplung durch längeres Rühren zu     Ende       und kann auch allenfalls neutralisierende  Mittel, wie z. B.     Natriumacetat,    zugeben. Der  Farbstoff wird dann     abfiltriert    und etwas  mit Wasser gewaschen. Man verrührt ihn  dann mit einer     Natriumchloridlösung    und  stellt mit     Natriumcarbonat    oder mit Ammo  niak auf den     Neutralpunkt.  



  Additional patent to main patent no. 208950. Process for the production of an azo dye: It has been found that a new valuable azo dye is obtained if one uses butyloxethylaminobenzene, the diazo compound of 1-amino-2,6-dichloro-4-nitrobenzene and maleic anhydride in this way interacts,

   that the acidic maleic acid ester of butyloxäthylaminobenzols is formed and the diazo radical occurs in the 4-position to the tertiary amino group.



  The dye obtained in this way forms a dark powder which, in the form of an alkali salt, dissolves in water with a brown color and dyes acetate artificial silk from an aqueous solution in brown shades.

           Example: 291 parts of the acidic 1-valeic acid ester of butyloxethylaminobenzene, obtained by reacting maleic anhydride with butyloxethylaminobenzene, are added to the diazo solution, which is produced from 207 parts of 1-amino-2,6-dichloro-4-nitrobenzene, which is in the form of an aqueous solution of an ammonium salt.

   The coupling is completed by prolonged stirring and, if necessary, neutralizing agents, such as. B. sodium acetate, add. The dye is then filtered off and washed a little with water. It is then stirred with a sodium chloride solution and adjusted to the neutral point with sodium carbonate or with ammonia.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man Butylogäthylaminobenzol, die Diazoverbin- dung des 1-Amino-2,6-dichlor-4-nitrobenzols und Maleinsäureanhydrid derart aufeinander einwirken lässt, PATENT CLAIM: A process for the production of an azo dye, characterized in that butylogethylaminobenzene, the diazo compound of 1-amino-2,6-dichloro-4-nitrobenzene and maleic anhydride are allowed to act on one another, dass der saure Maleinsäure- ester des Butyloxäthylaminobenzols gebildet wird und der Diazorest in 4-Stellung zur ter tiären Aminogruppe eintritt. Der so erhaltene Farbstoff bildet ein dunkles Pulver, das sich in Form eines Al kalisalzes in Wasser mit brauner Farbe löst und Acetatkunstseide aus wässriger Lösung in braunen Tönen färbt. that the acidic maleic acid ester of butyloxäthylaminobenzols is formed and the diazo radical occurs in the 4-position to the tertiary amino group. The dye obtained in this way forms a dark powder which, in the form of an alkali salt, dissolves in water with a brown color and dyes acetate artificial silk from an aqueous solution in brown shades.
CH211823D 1937-09-18 1937-09-18 Process for the preparation of an azo dye. CH211823A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH211823T 1937-09-18
CH208950T 1937-09-18

Publications (1)

Publication Number Publication Date
CH211823A true CH211823A (en) 1940-10-15

Family

ID=25724614

Family Applications (1)

Application Number Title Priority Date Filing Date
CH211823D CH211823A (en) 1937-09-18 1937-09-18 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH211823A (en)

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