CH217242A - Process for the preparation of a monoazo dye. - Google Patents

Process for the preparation of a monoazo dye.

Info

Publication number
CH217242A
CH217242A CH217242DA CH217242A CH 217242 A CH217242 A CH 217242A CH 217242D A CH217242D A CH 217242DA CH 217242 A CH217242 A CH 217242A
Authority
CH
Switzerland
Prior art keywords
sulfonic acid
preparation
methyl
dye
benzothiazole
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH217242A publication Critical patent/CH217242A/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
    • C09B29/00—Monoazo dyes prepared by diazotising and coupling
    • C09B29/0025—Monoazo dyes prepared by diazotising and coupling from diazotized amino heterocyclic compounds

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

  

  Verfahren zur Herstellung eines     Dlonoazofarbstoffes.       Es wurde gefunden, dass man wertvolle       Monoazofarbstoffe    erhält, wenn man die Di-         azoverbindungen    aus Aminen von der all  gemeinen Formel:

    
EMI0001.0004     
    mit     Acetoacetylverbindungen    von der allgemeinen     Formel:     
EMI0001.0007     
    worin X für Wasserstoff oder eine     Sulfon-          säuregruppe,    Y für     Methyl    oder eine     Carb-          oxylgruppe    und Z für Wasserstoff oder eine       .1,    stehen, kuppelt und die     erhal-          31     tenen Farbstoffe gegebenenfalls sulfoniert,    wobei der     fertige    Farbstoff mindestens 2     Sul-          fonsäuregruppen    enthalten soll.  



  Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Herstellung eines Mono  azofarbstoffes, welches dadurch gekennzeich-           net    ist,     daB    man die     Diazoverbindung    der       ?-(4'    -     Aminopheny        l)-6-methyl-benzothiazol-    7     -          sulfonsäure    mit 2 - (4' -     Acetoacetylamino-          phenyl)-6-methyl-benzothiazol-        7-sulfonsäure     kuppelt.  



  Der neue     Azofarbstoff    stellt ein gelles  Pulver dar und zieht     gut        auf    Baumwolle und  Viskose.  



       Beispiel:     <B>320</B>     Gewichtsteile    2-(4'-     Aminopheny    1)-6  methylbenzothiazol-7-sulfonsäurewerden wie  üblich     diazotiert.    Die Suspension der     Diazo-          verbindung    wird dann in eine Lösung von  404     Gewichtsteilen        2-(4'-Acetoacetylamino-          phenyl)-6-methylbenzothiazol-    7     -sulfonsäure     (erhältlich durch Einwirkung von     Diketen     auf     ?-(4'-        Aminophenyl)-6-methylben7othi-          azol-7-sulfonsäure)

      und 212 Gewichtsteilen       Natriumearbonat    in Wasser eingetragen.  Nach beendeter Kupplung wird der     Farb-          loff        ausgesalzen,    abgesaugt und getrocknet.  Er stellt ein     gelle:    Pulver dar. das     sehn    gut    auf Baumwolle und Viskose zieht. Die er  haltenen     grünstichig    gelben Färbungen zeich  nen sich durch sehr     gute    Wasser- und  Waschechtheit und gute Lichtechtheit aus.

    Auf einem Mischgewebe aus 50 Teilen  Baumwolle und 50 Teilen     Zellwolle    aus Vis  kose erhält man eine     grünstichig    gelbe     Ton-          in-Ton-Färbung.  



  Process for the preparation of a dlonoazo dye. It has been found that valuable monoazo dyes are obtained if the diazo compounds from amines have the general formula:

    
EMI0001.0004
    with acetoacetyl compounds of the general formula:
EMI0001.0007
    where X is hydrogen or a sulfonic acid group, Y is methyl or a carboxyl group and Z is hydrogen or a .1, couples and sulfonates the resulting dyes, if necessary, the finished dye containing at least 2 sulfonic acid groups should.



  The subject of the present patent is a process for the production of a mono azo dye, which is characterized in that the diazo compound of? - (4 '- aminophenyl) -6-methyl-benzothiazole- 7-sulfonic acid is mixed with 2 - (4' - Acetoacetylaminophenyl) -6-methyl-benzothiazole- 7-sulfonic acid couples.



  The new azo dye is a yellow powder and absorbs well on cotton and viscose.



       Example: <B> 320 </B> parts by weight of 2- (4'-aminopheny 1) -6 methylbenzothiazole-7-sulfonic acid are diazotized as usual. The suspension of the diazo compound is then dissolved in a solution of 404 parts by weight of 2- (4'-acetoacetylaminophenyl) -6-methylbenzothiazole-7-sulfonic acid (obtainable by the action of diketene on? - (4'-aminophenyl) -6- methylben7othiazole-7-sulfonic acid)

      and 212 parts by weight of sodium carbonate added to water. After the coupling is complete, the dye is salted out, filtered off with suction and dried. It represents a bright: powder. It looks good on cotton and viscose. The greenish yellow dyeings obtained are distinguished by very good water and wash fastness and good light fastness.

    A greenish yellow tone-on-tone coloration is obtained on a mixed fabric of 50 parts of cotton and 50 parts of viscose rayon.

Claims (1)

<B>PATENTANSPRUCH:</B> Verfahren zur Herstellung eines Mono azofarbstoffes, dadurch gekennzeichnet, dass man die Diazoverbindung der 2-(4'-Amino- hhenyl)-6-methyl-benzothiazol-7 - sulfonsäure mit 2-(4'-Acetoacetylatninoph(,nyl)-6-methyl- benzothiazol-7-sulfonsäure kuppelt. Der neue Farbstoff stellt ein gelbes Pul ver dar und zieht gut auf Baumwolle und Viskose. <B> PATENT CLAIM: </B> Process for the production of a mono azo dye, characterized in that the diazo compound of 2- (4'-amino-hhenyl) -6-methyl-benzothiazole-7-sulfonic acid is mixed with 2- (4 ' -Acetoacetylatninoph (, nyl) -6-methyl-benzothiazole-7-sulfonic acid couples.The new dye is a yellow powder and is well suited for cotton and viscose.
CH217242D 1939-11-07 1940-09-19 Process for the preparation of a monoazo dye. CH217242A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE217242X 1939-11-07

Publications (1)

Publication Number Publication Date
CH217242A true CH217242A (en) 1941-10-15

Family

ID=5830647

Family Applications (1)

Application Number Title Priority Date Filing Date
CH217242D CH217242A (en) 1939-11-07 1940-09-19 Process for the preparation of a monoazo dye.

Country Status (1)

Country Link
CH (1) CH217242A (en)

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