CH211814A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH211814A
CH211814A CH211814DA CH211814A CH 211814 A CH211814 A CH 211814A CH 211814D A CH211814D A CH 211814DA CH 211814 A CH211814 A CH 211814A
Authority
CH
Switzerland
Prior art keywords
azo dye
dye
preparation
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 CH211814A publication Critical patent/CH211814A/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

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

Description

       

  <B>Zusatzpatent</B> 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-chlor-4-nitrobenzols    und       Maleinsäureanhydrid    derart aufeinander ein  wirken lässt,

   dass der saure     Maleinsäureester     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 roter Farbe löst und       Acetatkunstseide        aus    wässriger Lösung in  roten Tönen färbt.    <I>Beispiel:</I>  In die     Diazolösung,    die man aus 172,5  Teilen     1-Amino-2-chlor-4-nitrobenzol    her  stellt, trägt man 263 Teile des sauren     Malein-    .

         säureesters    des     Äthyloxäthylaminobenzols,    er  halten durch Umsetzung von     Maleinsäure-          anhydrid    mit     Äthyloxäthylaminobenzol,    der  in Form einer     wässrigen    Lösung eines     Ammo-          niumsalzes    vorliegt, ein. Man führt die Kupp  lung durch längeres Rühren zu Ende und    kann auch allenfalls     neutralisierende    Mittel,  wie z. B.     Natriumacetat,    zugeben. Der Farb  stoff wird dann     abfiltriert    und etwas mit  Wasser gewaschen.

   Man verrührt ihn dann  mit einer     Natriumchloridlösung    und stellt  mit     Natriumcarbonat    oder mit Ammoniak  auf den     Neutralpunkt.  



  <B> Additional patent </B> 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 ethyloxyethylaminobenzene, the diazo compound of 1-amino-2-chloro-4-nitrobenzene and maleic anhydride, act on one another in such a way that

   that the acidic maleic acid ester of Äthyloxäthylaminobenzols is formed and the diazo radical occurs 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 red color and dyes acetate rayon from aqueous solution in red tones. <I> Example: </I> In the diazo solution, which is prepared from 172.5 parts of 1-amino-2-chloro-4-nitrobenzene, one carries 263 parts of the acidic maleic acid.

         acid esters of ethyloxäthylaminobenzols, he keep by reacting maleic anhydride with ethyloxäthylaminobenzol, which is in the form of an aqueous solution of an ammonium salt, a. You lead the hitch ment by prolonged stirring to the end and, if necessary, neutralizing agents such. 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 ammonia.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man Athyloxäthylaminobenzol, die Diazoverbin- dung d-es 1-Amino-2'-chlbr-4-nitrobenzols und Maleinsäureanhydrid derart aufeinander ein wirken lässt, PATENT CLAIM: Process for the production of an azo dye, characterized in that ethyloxethylaminobenzene, the diazo compound d-es 1-amino-2'-chloro-4-nitrobenzene and maleic anhydride are allowed to act on one another, dass der saure Maleinsäureester des Athyloxäthylaminobenzols 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 roter Farbe löst und Acetatkunstseide aus wässriger Lösung in roten Tönen färbt. . that the acidic maleic acid ester of Athyloxäthylaminobenzols is formed and the diazo radical occurs 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 red color and dyes acetate rayon from aqueous solution in red tones. .
CH211814D 1937-09-18 1937-09-18 Process for the preparation of an azo dye. CH211814A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH208950T 1937-09-18
CH211814T 1937-09-18

Publications (1)

Publication Number Publication Date
CH211814A true CH211814A (en) 1940-10-15

Family

ID=25724605

Family Applications (1)

Application Number Title Priority Date Filing Date
CH211814D CH211814A (en) 1937-09-18 1937-09-18 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH211814A (en)

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