CH139181A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

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Publication number
CH139181A
CH139181A CH139181DA CH139181A CH 139181 A CH139181 A CH 139181A CH 139181D A CH139181D A CH 139181DA CH 139181 A CH139181 A CH 139181A
Authority
CH
Switzerland
Prior art keywords
amino
molecule
preparation
azo dye
dye
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 CH139181A publication Critical patent/CH139181A/en

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  • Cosmetics (AREA)

Description

  

  Verfahren zur Darstellung eines     Azofarbstoffes.       Es wurde gefunden, dass man zu einem  wertvollen, Baumwolle in sehr lichtechten,  grünen Tönen färbenden     Farbstoff    gelangt,  wenn man das Kondensationsprodukt aus    einem Molekül 2 .     4-Dichlorchinazolin,    einem  Molekül     1-Amino-8-oxyn        aphtalin-3    .     6-dis    u     lfo-          säure    und einem Molekül     4-Amino-5'-methoxy-          4'-ogyazobenzol-3'-carbonsäure    von der Formel:

    
EMI0001.0011     
    mit der     Diazoverbindung    des     Aminoazokör-          pers    aus     1-Amino-8-oxynaphtalin-8,    f-disulfo-    säure und     3-Amino-4-kresoläthyläther    von der  Formel    
EMI0002.0001     
    kuppelt.

         Beispiel:     Man bereitet eine konzentrierte wässerige  Lösung von 822 Gewichtsteilen des     Tri-          natriumsalzes    des     Kondensationsproduktes    aus  einem Molekül     2.4-Dichlorchinazolin,    einem  Molekül     1-Amin        o-8-oxynaphtalin-3    .

       6-di    s u l     fo-          säure    und einem Molekül     4-Arnino-5'-methoxy-          4'-oxyazobenzol-3'-carbonsäure    (letztere Ver  bindung kann durch     Verseifung    des aus       diazotierter        4-Aminophenyloxaminsäure    und       3-Methoxy-2-oxybenzol-l-carborisäure    (soge  nannte     Guajacolcarbonsäure)    erhältlichen Azo-         farbstoffes    dargestellt werden.

   Zu der erhal  tenen,     -klar    rotstickig gelben Lösung gibt  man 1100     Volumteile    technisches     Pyridin,     kühlt das Ganze auf 5   C und kuppelt mit  503 Gewichtsteilen der     Diazoverbindung    des       Arninoazoköi-pers    aus     1-Amino-8-oxynaphtalin-          3.6-disnlfosäure    und     3-Ainino-4-ki-esoläthyl-          äther.    Die     Farbstoffbildung    setzt sofort ein  unter     tiefer        Grelbgrünfärbung    der Lösung und  ist bald beendet.

   Der neue Farbstoff zieht  auf Baumwolle in sehr lichtechten grünen  Tönen. Er stellt ein dunkles, bronzeglänzendes       Pulver    dar.



  Process for the preparation of an azo dye. It has been found that a valuable dye which dyes cotton in very lightfast, green tones is obtained if the condensation product of a molecule 2. 4-dichloroquinazoline, one molecule of 1-amino-8-oxynaphtalin-3. 6-disulfoic acid and one molecule of 4-amino-5'-methoxy-4'-ogyazobenzene-3'-carboxylic acid of the formula:

    
EMI0001.0011
    with the diazo compound of the aminoazo body from 1-amino-8-oxynaphthalene-8, f-disulphonic acid and 3-amino-4-cresol ethyl ether of the formula
EMI0002.0001
    clutch.

         Example: A concentrated aqueous solution of 822 parts by weight of the trisodium salt of the condensation product is prepared from one molecule of 2,4-dichloroquinazoline and one molecule of 1-amine-o-8-oxynaphthalene-3.

       6-di sul fo acid and a molecule of 4-amino-5'-methoxy-4'-oxyazobenzene-3'-carboxylic acid (the latter compound can be obtained by saponification of the diazotized 4-aminophenyloxamic acid and 3-methoxy-2-oxybenzene L-carboric acid (so-called guaiacol carboxylic acid) obtainable azo dye can be represented.

   1100 parts by volume of technical-grade pyridine are added to the obtained, clear red-sticky yellow solution, the whole thing is cooled to 5 ° C. and coupled with 503 parts by weight of the diazo compound of the aminoazoköi-pers from 1-amino-8-oxynaphthalene-3,6-disulfonic acid and 3-ainino -4-ki-esolethyl ether The formation of the dye sets in immediately with a deep green-green color of the solution and is soon over.

   The new dye pulls on cotton in very lightfast green tones. It is a dark, bronze-shining powder.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man das Kondensationsprodukt aus einem Molekül 2.4-Dichlorchinazolin, einem Molekül 1- Amino-8-oxyriaphtalin-3.6-disulfosäure und einem Molekül 4-Arnino-5'-methoxy-4'-oxy- azobenzol-3'-cai-bonsäui,e von der Formel: Claim: method for the preparation of an azo dye, characterized in that the condensation product of a molecule of 2,4-dichloroquinazoline, a molecule of 1-amino-8-oxyriaphthalene-3,6-disulfonic acid and a molecule of 4-amino-5'-methoxy-4 '-oxy- azobenzene-3'-cai-bonsäui, e of the formula: EMI0002.0041 mit der Diazoverbindung des Aminoazoktir- pers ans 1-Amino-8-oxynaphtalin-3.6-disulfo- säure und 3-Amino-4-kresoläthyläther von der Formel EMI0002.0048 kuppelt. Der Farbstoff stellt ein dunkles, bronze glänzendes Pulver dar und färbt Baumwolle in sehr lichtechten grünen Tönen. EMI0002.0041 with the diazo compound of the aminoazoctire of 1-amino-8-oxynaphthalene-3,6-disulfonic acid and 3-amino-4-cresol ethyl ether of the formula EMI0002.0048 clutch. The dye is a dark, shiny bronze powder and dyes cotton in very lightfast green tones.
CH139181D 1927-06-10 1928-05-01 Process for the preparation of an azo dye. CH139181A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE139181X 1927-06-10

Publications (1)

Publication Number Publication Date
CH139181A true CH139181A (en) 1930-04-15

Family

ID=5667656

Family Applications (1)

Application Number Title Priority Date Filing Date
CH139181D CH139181A (en) 1927-06-10 1928-05-01 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH139181A (en)

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