CH211824A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH211824A
CH211824A CH211824DA CH211824A CH 211824 A CH211824 A CH 211824A CH 211824D A CH211824D A CH 211824DA CH 211824 A CH211824 A CH 211824A
Authority
CH
Switzerland
Prior art keywords
azo dye
dye
yellow
preparation
diazo
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 CH211824A publication Critical patent/CH211824A/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       Methyloxäthylaminobenzol,    die     Diazoverbin-          dung    des     1-Amino-6-methoxy-3-nitrobenzols     und     Maleinsäureanhydrid    derart aufeinander  einwirken lässt,

   dass der saure     Maleinsäure-          ester    des     Methyloxäthylaminobenzols        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     gelboranger    Farbe  löst und     Acetatkunstseide    aus wässriger Lö  sung in gelborangen Tönen färbt.  



       Beispiel:     In die     Diazolösimg,    die man aus 168 Tei  len     1-Amino-6-methoxy-3-nitrobenzols    her  stellt, trägt man 249 Teile des sauren     Malein-          säureesters    des     Methyloxäthylaminobenzols,     erhalten durch Umsetzung von     Maleinsäure-          anhydrid    mit     Methyloxäthylaminobenzol,     der in Form einer     wässrigen    Lösung eines       Ammoniumsalzes    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 methyloxäthylaminobenzene, the diazo compound of 1-amino-6-methoxy-3-nitrobenzene and maleic anhydride are allowed to act on one another in such a way that

   that the acidic maleic acid ester of methyloxäthylaminobenzols 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, in the form of an alkali salt, dissolves in water with a yellow-orange color and dyes acetate rayon from aqueous solution in yellow-orange tones.



       Example: In the diazolösimg, which is made from 168 parts of 1-amino-6-methoxy-3-nitrobenzene, 249 parts of the acidic maleic acid ester of methyloxäthylaminobenzols, obtained by reacting maleic anhydride with methyloxäthylaminobenzol, which in 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 Methyloxäthylaminobenzol, die Diazoverbin- dung des 1-Amino-6-methoxy-3-nitrobenzols und Maleinsäureanhydrid derart aufeinander einwirken lässt, PATENT CLAIM: Process for the production of an azo dye, characterized in that methyloxäthylaminobenzene, the diazo compound of 1-amino-6-methoxy-3-nitrobenzene and maleic anhydride are allowed to act on one another dass der saure Maleinsäure- ester "des Methyloxäthylaminobenzols gebil det 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 gelboranger Farbe löst und Acetatkunstseide aus wässriger Lö sung in gelborangen Tönen färbt. that the acidic maleic acid ester "of Methyloxäthylaminobenzols is formed and the diazo radical enters in the 4-position to the tertiary amino group. The dye thus obtained forms a dark powder that dissolves in the form of an alkali in water with a yellow-orange color and acetate rayon from aqueous The solution colors yellow-orange tones.
CH211824D 1937-09-18 1937-09-18 Process for the preparation of an azo dye. CH211824A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH208950T 1937-09-18
CH211824T 1937-09-18

Publications (1)

Publication Number Publication Date
CH211824A true CH211824A (en) 1940-10-15

Family

ID=25724615

Family Applications (1)

Application Number Title Priority Date Filing Date
CH211824D CH211824A (en) 1937-09-18 1937-09-18 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH211824A (en)

Similar Documents

Publication Publication Date Title
CH211824A (en) Process for the preparation of an azo dye.
CH211822A (en) Process for the preparation of an azo dye.
CH211830A (en) Process for the preparation of an azo dye.
CH211819A (en) Process for the preparation of an azo dye.
CH211831A (en) Process for the preparation of an azo dye.
CH211818A (en) Process for the preparation of an azo dye.
CH211835A (en) Process for the preparation of an azo dye.
CH211826A (en) Process for the preparation of an azo dye.
CH211827A (en) Process for the preparation of an azo dye.
CH211832A (en) Process for the preparation of an azo dye.
CH211817A (en) Process for the preparation of an azo dye.
CH211833A (en) Process for the preparation of an azo dye.
CH211823A (en) Process for the preparation of an azo dye.
CH211828A (en) Process for the preparation of an azo dye.
CH211816A (en) Process for the preparation of an azo dye.
CH211821A (en) Process for the preparation of an azo dye.
CH211820A (en) Process for the preparation of an azo dye.
CH211806A (en) Process for the preparation of an azo dye.
CH211825A (en) Process for the preparation of an azo dye.
CH211809A (en) Process for the preparation of an azo dye.
CH211813A (en) Process for the preparation of an azo dye.
CH211838A (en) Process for the preparation of an azo dye.
CH211810A (en) Process for the preparation of an azo dye.
CH208950A (en) Process for the preparation of an azo dye.
CH211804A (en) Process for the preparation of an azo dye.