CH211832A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH211832A
CH211832A CH211832DA CH211832A CH 211832 A CH211832 A CH 211832A CH 211832D A CH211832D A CH 211832DA CH 211832 A CH211832 A CH 211832A
Authority
CH
Switzerland
Prior art keywords
methoxy
methyl
azo dye
dye
preparation
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 CH211832A publication Critical patent/CH211832A/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     Azofar        bstoifes.       Es     wurde        ,gefunden,    dass man einen neuen  wertvollen     Azofarbstoff    erhält, wenn man  5 -     Methyl-2-methoxy-N-metliyloxäthylamino-          benzol,        die        Diazoverbindung    des     1-Amino-          4-nitrobenzols    und     Maleinsäureanhydrid    der  art aufeinander     einwirken    lässt,

       dass    der       saure        Maleinsäureester    des     5-Methyl-2-me-          thoxy-N-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       Alkalisalzes    in Wasser mit     roter    Farbe löst  und     Acetatkunstseide    aus     wässriger    Lösung  in roten Tönen färbt.

      <I>Beispiel:</I>    In die     Diazolösung,    die man aus 189 Tei  len     1-Amino-4-nitrobenzol    herstellt, trägt  man 293 Teile des sauren     Maleinsäureesters     des 5 -     Methyl    - 2 - methoxy-N-methyloxäthyl-         aminobenzols,    erhalten durch Umsetzung von       Maleinsäureanhydrid    mit     5-Methyl-2-me-          thoxy-N-methyloxäthylaminobenzol,    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.     ss.        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  Ammoniak auf den     Neutralpunkt.  



  Additional patent to the main patent no. 208950. Process for the production of an Azofar bstoifes. It has been found that a new valuable azo dye is obtained if 5 - methyl-2-methoxy-N-methyloxyethylaminobenzene, the diazo compound of 1-amino-4-nitrobenzene and maleic anhydride, are allowed to act on one another

       that the acidic maleic acid ester of 5-methyl-2-methoxy-N-methyloxäthylaminobenzols is formed and the diazo radical is 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 salt in water with a red color and dyes acetate rayon from aqueous solution in red tones.

      <I> Example: </I> 293 parts of the acidic maleic acid ester of 5 - methyl - 2 - methoxy-N-methyloxethyl aminobenzene are added to the diazo solution, which is produced from 189 parts of 1-amino-4-nitrobenzene, obtained by reacting maleic anhydride with 5-methyl-2-methoxy-N-methyloxäthylaminobenzene, 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. ss. Sodium acetate. 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 5 - Methyl-2-methoxy-N-methyloxäthylamino- benzol, die Diazoverbindung .des 1-Amino-4- nitrobenzols und Maleinsäureanhydridder- art aufeinander einwirken lässt, dass : PATENT CLAIM: Process for the production of an azo dye, characterized in that 5 - methyl-2-methoxy-N-methyloxäthylamino-benzene, the diazo compound .des 1-amino-4-nitrobenzene and maleic anhydride are allowed to act on one another in such a way that : der saure Maleinsäureester des 5-Methyl-2-methoxy-N- methylogäthylaminobenzols 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 Alkalisalzes in Wasser mit roter Farbe löst und Acetatkunstseide aus wäBriger Lösung in roten Tönen färbt. the acidic maleic acid ester of 5-methyl-2-methoxy-N-methylogäthylaminobenzols is formed and the diazo radical is in the 4-position to the tertiary amino group. The dye thus obtained forms a dark powder that takes shape. of an alkali salt dissolves in water with a red color and dyes acetate rayon from an aqueous solution in red tones.
CH211832D 1937-09-18 1937-09-18 Process for the preparation of an azo dye. CH211832A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH208950T 1937-09-18
CH211832T 1937-09-18

Publications (1)

Publication Number Publication Date
CH211832A true CH211832A (en) 1940-10-15

Family

ID=25724623

Family Applications (1)

Application Number Title Priority Date Filing Date
CH211832D CH211832A (en) 1937-09-18 1937-09-18 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH211832A (en)

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