CH211818A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH211818A
CH211818A CH211818DA CH211818A CH 211818 A CH211818 A CH 211818A CH 211818D A CH211818D A CH 211818DA CH 211818 A CH211818 A CH 211818A
Authority
CH
Switzerland
Prior art keywords
azo dye
dye
preparation
diazo
ethyloxethylaminobenzene
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 CH211818A publication Critical patent/CH211818A/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       Äthyloxäthylaminobenzol,    die     Diazoverbin-          dung    des     1-Amino-2,6-dichlor-4-nitrobenzols     und     Maleinsäureanhydrid    derart aufeinander       einwirken    lässt,

   dass der saure     Maleinsäure-          ester    des     Äthyloxäthylaminobenzols    gebildet  wird und der     Diazorest    in     4-Stellung    zur  tertiären     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.  



  <I>Beispiel:</I>  In die     Diazolösung,    die man aus 207 Tei  len     1-Amino-2,6-dichlor-4-nitrobenzol    her  stellt, trägt man 263 Teile des sauren       Maleinsäureesters    des     Äthyloxäthylamino-          benzols,    erhalten durch Umsetzung von       Maleinsäureanhydrid    mit     Athyloxäthylamino-          benzol,    der in Form einer     wässrigen    Lösung  eines     Ammoniumsalzes    vorliegt, ein. Man  führt die Kupplung durch längeres Rühren    zu Ende und kann auch allenfalls neutrali  sierende Mittel, wie z. B.     Natriumacetat,    zu  geben.

   Der Farbstoff wird dann     abfiltriert     und     etwas    mit Wasser gewaschen. Man ver  rührt ihn dann mit einer     Natriumchlorid-          lösung    und stellt mit     Natriumcarbonat    oder  mit Ammoniak 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 ethyloxethylaminobenzene, the diazo compound of 1-amino-2,6-dichloro-4-nitrobenzene and maleic anhydride, act on one another in such a way that

   that the acidic maleic acid ester of ethyloxethylaminobenzene is formed and the diazo radical is 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.



  <I> Example: </I> In the diazo solution, which is made from 207 parts of 1-amino-2,6-dichloro-4-nitrobenzene, one carries 263 parts of the acidic maleic acid ester of ethyloxethylaminobenzene, obtained by reaction of maleic anhydride with Athyloxäthylamino- benzene, which is in the form of an aqueous solution of an ammonium salt, a. The coupling is completed by prolonged stirring and, if necessary, neutralizing agents such. B. sodium acetate to give.

   The dye is then filtered off and washed a little with water. It is then stirred with a sodium chloride solution and set to neutral with sodium carbonate or ammonia.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man Athyloxäthylaminobenzol, die Diazoverbin- dung des 1-Amino-2,6-dichlor-4-nitrobenzols und Maleinsäureanhydrid derart aufeinander einwirken lässt, PATENT CLAIM: Process for the production of an azo dye, characterized in that ethyloxyethylaminobenzene, 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 Äthyloxäthylaminobenzols 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 Aeetatkunstseide aus wässriger Lösung in braunen Tönen färbt. that the acidic maleic acid ester of ethyloxethylaminobenzene is formed and the diazo radical is in the 4-position to the tertiary amino group. The dye thus obtained forms a dark powder, which dissolves in the form of an alkali salt in water with a brown color and dyes acetate artificial silk from aqueous solution in brown shades.
CH211818D 1937-09-18 1937-09-18 Process for the preparation of an azo dye. CH211818A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH211818T 1937-09-18
CH208950T 1937-09-18

Publications (1)

Publication Number Publication Date
CH211818A true CH211818A (en) 1940-10-15

Family

ID=25724609

Family Applications (1)

Application Number Title Priority Date Filing Date
CH211818D CH211818A (en) 1937-09-18 1937-09-18 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH211818A (en)

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