CH211833A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH211833A
CH211833A CH211833DA CH211833A CH 211833 A CH211833 A CH 211833A CH 211833D A CH211833D A CH 211833DA CH 211833 A CH211833 A CH 211833A
Authority
CH
Switzerland
Prior art keywords
methoxy
methyl
dye
azo dye
red
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 CH211833A publication Critical patent/CH211833A/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-methyloxäthylamino-          benzol,    die     Diazoverbindung    des     1-Amino-2-          chlor-4-nitrobenzols    und     Maleinsäureanhydrid     derart aufeinander einwirken lässt,

   dass der  saure     Maleineäureester    des     5-Methyl-2-me-          thoxy-N-methyloxäthylaminobenzols    :gebildet  wird und der     Diazorest    in     4-8tellung    zur  tertiären     Aminogruppe    eintritt.  



  Der so erhaltene Farbstoff bildet ein  dunkles Pulver, .das     sieh    in Form eines       Alkalisalzes    in Wasser mit     :rotvioletter    Färbe  löst und     Acetatkuns@tseide    aus     wässriger    Lö  sung in rotvioletten Tönen färbt.  



  <I>Beispiel:</I>  In die     Diazolösung,    die man aus<B>172,5</B>  Teilen     1-Amino-2--chlor-4-nitrobenzol    her  stellt, trägt man 293 Teile des sauren     Malein-          säureesfers    des 5-Methyl-2-methoxy-N-me-         thyloxäthylaminobenzols"        erhalten    durch Um  setzung von     Maleinsäureanhydrid    mit     5-Me-          t        hyl    - 2 -     methoxy    -N -     methyloxäthylaminoben-          zol,

      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.     NatriumacMat,    zugeben.  Der Farbstoff wird - dann     abfiltriert    und  etwas mit Wasser     ;gewaschen.    Man verrührt  ihn dann     mit    einer     Natriumchloridlö:sung     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-methyloxäthylaminobenzene, the diazo compound of 1-amino-2-chloro-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-methyloxäthylaminobenzols: is formed and the diazo radical is in 4-8 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: red-violet dye and dyes acetate synthetic silk from aqueous solution in red-violet tones.



  <I> Example: </I> 293 parts of the acidic maleic acid are added to the diazo solution that is made from <B> 172.5 </B> parts of 1-amino-2-chloro-4-nitrobenzene Acidesfers of 5-methyl-2-methoxy-N-methyloxäthylaminobenzols "obtained by reaction of maleic anhydride with 5-methyl - 2 - methoxy -N - methyloxäthylaminobenzol,

      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. B. Sodium AcMat, 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-methyloxäthylamino- benzol, die Diazoverbindung des 1-Amino-2- chlor-4-nitrobenzols und Maleinsäureanhydrid derart aufeinander einwirken lässt, Claim: Process for the production of an azo dye, characterized in that 5-methyl-2-methoxy-N-methyloxäthylamino-benzene, the diazo compound of 1-amino-2-chloro-4-nitrobenzene and maleic anhydride are allowed to act on one another in this way , dass der saure Maleinsäureester des 5-Methyl-2-me- thoxy-N-methyloxäthylaminobenzols gebildet wird und der Diazorest in 4-Stellung zur ter tiären Aminob uppe eintritt. that the acidic maleic 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. Der so erhaltene Farbstoff bildet ein dunkles Pulver, das sieh in Form eines Alkalisalzes in Wasser mit rotvioletter Farbe löst und Acetatkunstseide aus wäss- riger Lösung in rotvioletten Tönen färbt. The dye thus obtained forms a dark powder which dissolves in the form of an alkali salt in water with a red-violet color and dyes acetate artificial silk from an aqueous solution in red-violet tones.
CH211833D 1937-09-18 1937-09-18 Process for the preparation of an azo dye. CH211833A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH208950T 1937-09-18
CH211833T 1937-09-18

Publications (1)

Publication Number Publication Date
CH211833A true CH211833A (en) 1940-10-15

Family

ID=25724624

Family Applications (1)

Application Number Title Priority Date Filing Date
CH211833D CH211833A (en) 1937-09-18 1937-09-18 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH211833A (en)

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