CH211828A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH211828A
CH211828A CH211828DA CH211828A CH 211828 A CH211828 A CH 211828A CH 211828D A CH211828D A CH 211828DA CH 211828 A CH211828 A CH 211828A
Authority
CH
Switzerland
Prior art keywords
methoxy
azo dye
maleic acid
dye
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 CH211828A publication Critical patent/CH211828A/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-methyloxäthylamino-          benzol,    :die     Diazoverbindung    des     1-Amino-4-          nitrobenzol-2-methylsulfons    und     Malein@säuTe-          anhydrid    derart aufeinander einwirken lässt,  dass der saure     Male:insäureester    :

  des     5-Methyl-          2-methoxy-N-methyloxäthylaminobenzols    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       Alkalisalzes    in Wasser mit violetter Farbe  löst und     Acetatkunsts.eide    aus wässriger Lö  sung in violetten Tönen färbt.  



  <I>Beispiel:</I>  <B>In</B> die     Diazolösung,    die man aus 216 Tei  len 1-     Amino    - 4 -     nitrobenzol    - 2 -     methylsulfon          herstellt,    trägt man 293 Teile     :

  des        sauren          Maleinsäureesters    des     5-Methyl-2-methoxy-          N-methyloxäthylaminobenzols,    erhalten     dluroch     Umsetzung von     Ma.leinsäureanhydrid    mit  5 -     Methyl-2-methoxy-N-methyloxäthylamino-          benzol,    der in Form einer     wässrigen    Lösung  eines     Ammoniumsalzes    vorliegt, ein. Man  führt die Kupplung durch     längeres    Rühren    zu Ende und kann auch allenfalls neutrali  sierende Mittel, z.     B.        Natriumaoetat,    zugeben.

    Der Farbstoff wird dann     abfiltriert        und          etwas    mit     Wasser        ,gewaschen.    Man     verrührt     ihn dann mit einer     Natrium:chloridl.ösung     und stellt mit     Natrium-carbonat    oder mit  Ammoniak 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-methyloxäthylamino-benzene,: the diazo compound of 1-amino-4-nitrobenzene-2-methylsulfone and maleic acid anhydride can interact in such a way that the acidic male: inic acid ester:

  of 5-methyl-2-methoxy-N-methyloxäthylaminobenzols 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 violet color and colors Acetatkunsts.eide from aqueous solution in violet shades.



  <I> Example: </I> <B> In </B> the diazo solution, which is made from 216 parts of 1- amino - 4 - nitrobenzene - 2 - methylsulfone, contains 293 parts:

  of the acidic maleic acid ester of 5-methyl-2-methoxy-N-methyloxäthylaminobenzols, obtained dluroch reaction of Ma.leinsäureanhydrid with 5 - methyl-2-methoxy-N-methyloxäthylaminobenzene, which is in the form of an aqueous solution of an ammonium salt, a. The coupling is completed by prolonged stirring 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 5 - Methyl-2-methoxy-N-methyloxäthylamino- benzol, die Diazoverbindung des 1.-Amino-4- nitrobenzol-2-methylsulfons und Maleins.äure- anhydrid derart aufeinander einwirken lässt, , PATENT CLAIM: Process for the production of an azo dye, characterized in that 5 - methyl-2-methoxy-N-methyloxäthylaminobenzene, the diazo compound of 1.-amino-4-nitrobenzene-2-methylsulfone and maleic acid anhydride interacts in such a way that dass der saure Maleinsäureester des 5-Me- thy 1- 2 - methoxy -N-methyloxätJlylaminoben- zols gebildet wird und der Diazo.rest in 4- Stellung zur tertiären Aminogruppe eintritt. Der so erhaltene Farbstoff bildet ein dunkles Pulver, das sich in Form eines Alkalisalzes in Wasser mit violetter Farbe löst und Acetatkunstseide aus wässriger Lö sung in violetten Tönen färbt. that the acidic maleic acid ester of 5-methy 1- 2-methoxy-N-methyloxätJlylaminoben- zols is formed and the diazo.rest occurs in position 4 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 violet color and dyes acetate rayon from aqueous solution in violet tones.
CH211828D 1937-09-18 1937-09-18 Process for the preparation of an azo dye. CH211828A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH208950T 1937-09-18
CH211828T 1937-09-18

Publications (1)

Publication Number Publication Date
CH211828A true CH211828A (en) 1940-10-15

Family

ID=25724619

Family Applications (1)

Application Number Title Priority Date Filing Date
CH211828D CH211828A (en) 1937-09-18 1937-09-18 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH211828A (en)

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