CH204135A - Process for the production of a vat dye. - Google Patents

Process for the production of a vat dye.

Info

Publication number
CH204135A
CH204135A CH204135DA CH204135A CH 204135 A CH204135 A CH 204135A CH 204135D A CH204135D A CH 204135DA CH 204135 A CH204135 A CH 204135A
Authority
CH
Switzerland
Prior art keywords
production
dye
acid
vat
vat 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 CH204135A publication Critical patent/CH204135A/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)
  • Coloring (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     4,4'-A.zozimhäure     mit     1-Amino-5-benzoylaminoanthraohinon    im       Molekularverhältns    1 :

   2     kondensiert.     



  Der so erhaltene     Farbstoff    löst sich     in     konzentrierter Schwefelsäure mit rotbrauner       Farbe        und    färbt     Baumwolle    aus     violetter          Küpe    in goldorangen     Tönen.        Die    Färbungen  besitzen vorzügliche     Echtheitseigenschaften.          Beispiel:

            Eine    Lösung von 35     Teilen        1-Amino-5-          benzoylaminoanthrachinon    in etwa 400 Tei  len     Monochlorbenzol        wird    mit 18 Teilen     4,4'-          Azozimtsäuredichlorid    versetzt,     und    das Ge  misch wird zwei bis drei     Stunden    unter       Rückflusskühlung    gekocht. Der bereits heiss       ausgeschiedene    kristalline Farbstoff wird ab  gesaugt, gewaschen und     getrocknet.     



       4,4'-Azozimtsäuredichlorid,    das aus Benzol    in     gelben    Nadeln vom Schmelzpunkt 221' C  kristallisiert, kann aus der     4,4'-Azozimtsäure     durch Kochen mit     Thionylchlorid    in Chlor  benzollösung erhalten werden.     4,4'-Azozimt-          säure    lässt sich durch alkalische Reduktion  von     4-Nitro        zimtsäure    mit Traubenzucker  herstellen.



  <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 the production of a vat dye, characterized in that a functional derivative of 4,4'-azozimhic acid with 1-amino-5-benzoylaminoanthraohinone in a molecular ratio of 1:

   2 condensed.



  The dye thus obtained dissolves in concentrated sulfuric acid with a red-brown color and dyes cotton from a violet vat in golden-orange tones. The dyeings have excellent fastness properties. Example:

            A solution of 35 parts of 1-amino-5-benzoylaminoanthraquinone in about 400 parts of monochlorobenzene is mixed with 18 parts of 4,4'-azocinnamic acid dichloride, and the mixture is refluxed for two to three hours. The crystalline dye, which has already separated out while hot, is filtered off with suction, washed and dried.



       4,4'-Azocinnamic acid dichloride, which crystallizes from benzene in yellow needles with a melting point of 221 ° C., can be obtained from 4,4'-azocinnamic acid by boiling with thionyl chloride in a chlorobenzene solution. 4,4'-Azocinnamic acid can be produced by alkaline reduction of 4-nitro cinnamic acid with grape sugar.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Küpen- farbstoffes, dadurch gekennzeichnet, dass man ein funktionelles Derivat der 4,4'-Azozimt- säure mit 1-Amino-5-benzoylaminoanthraehi- non im Molekularverhältnis 1 : PATENT CLAIM: Process for the production of a vat dye, characterized in that a functional derivative of 4,4'-azocinnamic acid is mixed with 1-amino-5-benzoylaminoanthraquinone in a molecular ratio of 1: 2 kondensiert. Der so erhaltene Farbstoff löst sich in konzentrierter Schwefelsäure mit rotbrauner Farbe und färbt Baumwolle aus violetter Küpe in goldorangen Tönen. Die Färbungen besitzen vorzügliche Echtheitseigenschaften. 2 condensed. The dye thus obtained dissolves in concentrated sulfuric acid with a red-brown color and dyes cotton from a violet vat in golden-orange tones. The dyeings have excellent fastness properties.
CH204135D 1937-02-06 1938-02-01 Process for the production of a vat dye. CH204135A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE204135X 1937-02-06
CH200369T 1938-03-21

Publications (1)

Publication Number Publication Date
CH204135A true CH204135A (en) 1939-04-15

Family

ID=25723481

Family Applications (1)

Application Number Title Priority Date Filing Date
CH204135D CH204135A (en) 1937-02-06 1938-02-01 Process for the production of a vat dye.

Country Status (1)

Country Link
CH (1) CH204135A (en)

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