CH211817A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH211817A
CH211817A CH211817DA CH211817A CH 211817 A CH211817 A CH 211817A CH 211817D A CH211817D A CH 211817DA CH 211817 A CH211817 A CH 211817A
Authority
CH
Switzerland
Prior art keywords
methoxy
methyl
azo dye
preparation
dye
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 CH211817A publication Critical patent/CH211817A/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

  

  <B>Zusatzpatent</B> zum Hauptpatent Nr. 208950.    Verfahren zur Herstellung eines     Azofarbstoffes.       Es wurde gefunden, dass man     einen    neuen  wertvollen     Azofarbstoff    erhält, wenn man     5-          Methyl    - 2 -     methoxy-N-äthyloxäthylaminoben-          zol,    die     Diazoverbindung    des     1-Amino-4-          nitrobenzols    und     Maleinsäureanhydrid    derart  aufeinander     einwirken    lässt,

   dass der saure       Maleinsäureester    des     5-Methyl-2-methoxy-N-          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 139 Tei  len     1-Amino-4-nitrobenzol    herstellt, trägt man  307 Teile des sauren     Maleinsäureesters    des       5-Methyl-    2     -methoxy-    N-     äthyloxäthylamino-          benzols,    erhalten durch Umsetzung von       Maleinsäureanhydrid    mit 5 -     Methyl    - 2 -     me-          thoxy    - N -     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 5-methyl-2-methoxy-N-ethyloxethylaminobenzene, the diazo compound of 1-amino-4-nitrobenzene and maleic anhydride are allowed to act on one another in such a way that

   that the acidic maleic acid ester of 5-methyl-2-methoxy-N-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 produced from 139 parts of 1-amino-4-nitrobenzene, one carries 307 parts of the acidic maleic acid ester of 5-methyl-2-methoxy-N-ethyloxethylamino-benzene, obtained by reacting maleic anhydride with 5 - methyl - 2 - methoxy - N - äthyloxäthylaminobenzol,

      which is in the form of an aqueous solution of an ammonium salt. 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 set to neutral with sodium carbonate or ammonia.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man 5 Methyl-2-methoxy-N-äthyloxäthylaminoben- zol, die Diazoverbindung des 1 - Amino - 4 - nitrobenzols und Maleinsäureanhydrid derart aufeinander einwirken lässt, PATENT CLAIM: Process for the production of an azo dye, characterized in that 5-methyl-2-methoxy-N-ethyloxäthylaminobenzene, the diazo compound of 1-amino-4-nitrobenzene and maleic anhydride are allowed to act on one another in such a way that dass der saure Maleinsäureester des 5-Methyl-2-methoxy-N- äthyloxyäthylaminobenzols 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 5-methyl-2-methoxy-N-äthyloxyäthylaminobenzols 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 red color and dyes acetate artificial silk from aqueous solution in red tones.
CH211817D 1937-09-18 1937-09-18 Process for the preparation of an azo dye. CH211817A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH208950T 1937-09-18
CH211817T 1937-09-18

Publications (1)

Publication Number Publication Date
CH211817A true CH211817A (en) 1940-10-15

Family

ID=25724608

Family Applications (1)

Application Number Title Priority Date Filing Date
CH211817D CH211817A (en) 1937-09-18 1937-09-18 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH211817A (en)

Similar Documents

Publication Publication Date Title
CH211817A (en) Process for the preparation of an azo dye.
CH211822A (en) Process for the preparation of an azo dye.
CH211814A (en) Process for the preparation of an azo dye.
CH211806A (en) Process for the preparation of an azo dye.
CH211826A (en) Process for the preparation of an azo dye.
CH211832A (en) Process for the preparation of an azo dye.
CH211816A (en) Process for the preparation of an azo dye.
CH211802A (en) Process for the preparation of an azo dye.
CH211820A (en) Process for the preparation of an azo dye.
CH211819A (en) Process for the preparation of an azo dye.
CH211821A (en) Process for the preparation of an azo dye.
CH211827A (en) Process for the preparation of an azo dye.
CH211824A (en) Process for the preparation of an azo dye.
CH211815A (en) Process for the preparation of an azo dye.
CH208950A (en) Process for the preparation of an azo dye.
CH211831A (en) Process for the preparation of an azo dye.
CH211805A (en) Process for the preparation of an azo dye.
CH211803A (en) Process for the preparation of an azo dye.
CH211811A (en) Process for the preparation of an azo dye.
CH211807A (en) Process for the preparation of an azo dye.
CH211808A (en) Process for the preparation of an azo dye.
CH211813A (en) Process for the preparation of an azo dye.
CH211809A (en) Process for the preparation of an azo dye.
CH211812A (en) Process for the preparation of an azo dye.
CH211830A (en) Process for the preparation of an azo dye.