CH211804A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH211804A
CH211804A CH211804DA CH211804A CH 211804 A CH211804 A CH 211804A CH 211804D A CH211804D A CH 211804DA CH 211804 A CH211804 A CH 211804A
Authority
CH
Switzerland
Prior art keywords
methoxy
methyl
azo dye
diazo
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 CH211804A publication Critical patent/CH211804A/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     5-          Methyl    - 2 -     methoxy-N-        äthyloxyäthylamino-          benzol,    die     Diazoverbindung    des     1-Amino-2-          chlor-4-nitrobenzols    und     Maleinsäureanhy-          drid    derart aufeinander einwirken lässt,

   dass  der saure     Maleinsäureester    des     5-Methyl-2-          methoxy-N-äthyloxyäthylaminobenzols    ge  bildet 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 violetter Farbe löst  und     Acetatkunstseide    aus wässeriger Lösung  in violetten Tönen färbt.    <I>Beispiel:</I>    in die     Diazolösung,    die man aus 172,5  Teilen     1-Amino-2-chlor-4-nitrobenzol    herstellt,  trägt man 307 Teile des sauren     Maleinsäure-          esters    des     5-Methyl-2-methoxy-N-äthyloxy-          äthylaminobenzols,

      erhalten durch Umset-         zung    von     Maleinsäureanhydrid    mit     5-Methyl-          2-methoxy-N-äthyloxyäthylaminobenzol,    der  in Form einer wässerigen Lösung seines Am  moniumsalzes 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 5-methyl-2-methoxy-N-ethyloxyethylamino-benzene, the diazo compound of 1-amino-2-chloro-4-nitrobenzene and maleic anhydride are allowed to act on one another in this way ,

   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 that dissolves in the form of an alkali salt in water with a violet color and dyes acetate artificial silk from an aqueous solution in violet tones. <I> Example: </I> the diazo solution, which is prepared from 172.5 parts of 1-amino-2-chloro-4-nitrobenzene, contains 307 parts of the acidic maleic acid ester of 5-methyl-2-methoxy -N-äthyloxy- äthylaminobenzols,

      obtained by reacting maleic anhydride with 5-methyl-2-methoxy-N-ethyloxyethylaminobenzene, which is in the form of an aqueous solution of its ammonium salt. The coupling is completed by prolonged stirring and, if necessary, neutralizing agents, such as. B. Add 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 with ammonia.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man 5-Methyl-2-methoxy-N-äthyloxyäthylamino- benzol, die Diazoverbindung des 1-Amino-2- chlor - 4 - nitrobenzols und Maleinsäureanhy- drid derart aufeinander einwirken lässt, PATENT CLAIM: A process for the production of an azo dye, characterized in that 5-methyl-2-methoxy-N-ethyloxyethylamino-benzene, the diazo compound of 1-amino-2-chloro-4-nitrobenzene and maleic anhydride act on one another in this way leaves, dass der saure Maleinsäureester des 5-Methyl-2- methoxy-N-äthyloxyäthylaminobenzols gebil- det wird und der Diazorest in 4-Stellung zur tertiären Aminogruppe einritt\.-': that the acidic maleic acid ester of 5-methyl-2-methoxy-N-ethyloxyethylaminobenzene is formed and the diazo radical is in the 4-position to the tertiary amino group \ .- ': Der so erhaltene FX@3stöff, @'bilt et ein dunkles Pulver, das sicE@,in Form @emes Al kalisalzes in Wasser mit viol4ter' Farbe löst und Acetatkunstseide aus wässeriger Lösung in violetten Tönen färbt. The so obtained FX @ 3stöff, @ 'bilt et a dark powder, the sicE @, in the form @emes alkali salt dissolves in water with purple color and dyes acetate artificial silk from an aqueous solution in purple tones.
CH211804D 1937-09-18 1937-09-18 Process for the preparation of an azo dye. CH211804A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH208950T 1937-09-18
CH211804T 1937-09-18

Publications (1)

Publication Number Publication Date
CH211804A true CH211804A (en) 1940-10-15

Family

ID=25724595

Family Applications (1)

Application Number Title Priority Date Filing Date
CH211804D CH211804A (en) 1937-09-18 1937-09-18 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH211804A (en)

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