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CH204132A - Process for the production of a vat dye. - Google Patents

Process for the production of a vat dye.

Info

Publication number
CH204132A
CH204132A CH204132DA CH204132A CH 204132 A CH204132 A CH 204132A CH 204132D A CH204132D A CH 204132DA CH 204132 A CH204132 A CH 204132A
Authority
CH
Switzerland
Prior art keywords
production
dye
vat
vat dye
dicarboxylic acid
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 CH204132A publication Critical patent/CH204132A/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
    • C09B43/32—Preparation of azo dyes from other azo compounds by reacting carboxylic or sulfonic groups, or derivatives thereof, with amines; by reacting keto-groups with amines
    • C09B43/36—Preparation of azo dyes from other azo compounds by reacting carboxylic or sulfonic groups, or derivatives thereof, with amines; by reacting keto-groups with amines with amino-anthracene or amino-anthraquinone dyes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  <B>Zusatzpatent</B> zum Hauptpatent Nr. 200369.    Verfahren zur Herstellung eines     güpenfarbstoffes.       Vorliegendes Patent bezieht sich auf ein  Verfahren zur Herstellung eines     Küpenfarb-          stoffes,    dadurch gekennzeichnet, dass man ein  funktionelles Derivat der     Diphenylazodiphe-          nyl-4,        V-dicarbonsäure    mit     1-Aminoantbrachi-          non    im     Molekularverhältnis    1:2 kondensiert.  



  Der so erhaltene     Farbstoff    löst sich in  konzentrierter Schwefelsäure mit bräunlich-    roter Farbe     und    färbt Baumwolle aus vio  letter     Küpe    in sehr echten gelben Tönen.  



       Beispiel:     In eine auf 160   C erhitzte Lösung von  46 Teilen     1-Aminoanthrachinon    in 500 Teilen       o-Dichlorbenzol    trägt man langsam 46 Teile       Diphenylazodiphenyl    - 4, 4' -     dicarbonsäuredi-          chlorid    von der Formel:  
EMI0001.0019     
    ein. Das Kondensationsprodukt fällt fast voll  ständig aus und wird nach etwa einstündigem  Rühren bei 160   C abgesaugt, gewaschen  und getrocknet.  



  Das verwendete     Säuredichlorid    kann bei  spielsweise aus der entsprechenden     Dicarbon-          säure    mit Hilfe von     Phosphorpentachlorid    er  halten werden. Er kristallisiert in roten Na  deln vom Schmelzpunkt 250   C. Die     Diphenyl-          azodiphenyl-4,        4'-dicarbonsäure    kann durch  Reduktion von     4-Nitrodiphenyl-4'-carbonsäure     mit Hilfe von Traubenzucker hergestellt wer  den.



  <B> Additional patent </B> to main patent No. 200369. Process for the production of a high quality dye. The present patent relates to a process for producing a vat dye, characterized in that a functional derivative of diphenylazodiphenyl-4, V-dicarboxylic acid is condensed with 1-aminoantbrachinone in a molecular ratio of 1: 2.



  The dye thus obtained dissolves in concentrated sulfuric acid with a brownish-red color and dyes cotton from vio letter vat in very real yellow tones.



       Example: 46 parts of diphenylazodiphenyl-4,4'-dicarboxylic acid dichloride of the formula are slowly added to a solution of 46 parts of 1-aminoanthraquinone in 500 parts of o-dichlorobenzene, heated to 160 C.
EMI0001.0019
    one. Almost all of the condensation product precipitates out and, after stirring for about one hour at 160 ° C., is filtered off with suction, washed and dried.



  The acid dichloride used can, for example, be obtained from the corresponding dicarboxylic acid with the aid of phosphorus pentachloride. It crystallizes in red needles with a melting point of 250 C. The diphenyl azodiphenyl-4, 4'-dicarboxylic acid can be produced by reducing 4-nitrodiphenyl-4'-carboxylic acid with the help of grape sugar.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Küpen- farbstoffes, dadurch gekennzeichnet, dass man ein funktionelles Derivat der Diphenylazo- diphenyl-4, 4'-dicarbonsäure mit 1-Amino- anthrachinon im Molekularverhältnis 1: 2 kon densiert. Der so erhaltene Farbstoff löst sich in konzentrierter Schwefelsäure mit bräunlich roter Farbe und färbt Baumwolle aus violet ter Küpe in sehr echten gelben Tönen. PATENT CLAIM: Process for the production of a vat dye, characterized in that a functional derivative of diphenylazo-diphenyl-4, 4'-dicarboxylic acid is condensed with 1-amino anthraquinone in a molecular ratio of 1: 2. The dye thus obtained dissolves in concentrated sulfuric acid with a brownish red color and dyes cotton from a violet vat in very real yellow tones.
CH204132D 1937-01-07 1938-01-04 Process for the production of a vat dye. CH204132A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE204132X 1937-01-07
CH200369T 1938-03-21

Publications (1)

Publication Number Publication Date
CH204132A true CH204132A (en) 1939-04-15

Family

ID=25723478

Family Applications (1)

Application Number Title Priority Date Filing Date
CH204132D CH204132A (en) 1937-01-07 1938-01-04 Process for the production of a vat dye.

Country Status (1)

Country Link
CH (1) CH204132A (en)

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