CH222129A - Process for the preparation of a disazo dye. - Google Patents

Process for the preparation of a disazo dye.

Info

Publication number
CH222129A
CH222129A CH222129DA CH222129A CH 222129 A CH222129 A CH 222129A CH 222129D A CH222129D A CH 222129DA CH 222129 A CH222129 A CH 222129A
Authority
CH
Switzerland
Prior art keywords
dye
acid
combined
diazo compound
preparation
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 CH222129A publication Critical patent/CH222129A/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
    • C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
    • C09B31/02—Disazo dyes
    • C09B31/025—Disazo dyes containing acid groups, e.g. -COOH, -SO3H, -PO3H2, -OSO3H, -OPO2H2; Salts thereof

Landscapes

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

Description

  

  <B>Zusatzpatent</B> zum Hauptpatent Nr. 218077.    Verfahren zur Herstellung eines     Bisazofarbstoffes.       Vorliegendes Patent bezieht sich auf ein  Verfahren zur Herstellung eines     Disazofarb-          stoffes,    dadurch gekennzeichnet, dass man die       Diazoverbindung    von     1-Amino-4-(4'-methyl-          phenoxy)-benzol-5-sulfonsäure    mit     1-Amino-          naphthalin    vereinigt, den erhaltenen Mono-.

         azofarbstoff        weiterdiazotiert    und die     Diazo-          verbindung    mit     2-Oxynaphthalin-4-sulfon-          säure    vereinigt.  



  Der so erhaltene Farbstoff ist ein dunkles  wasserlösliches Pulver, das sich in konzen  trierter     Schwefelsäure    mit grünschwarzer  Farbe löst, und färbt Wolle oder Seide aus  saurem Bade in schwarzen Tönen von sehr  guter Walk-, Schweiss-;     Dekatur-    und Licht  echtheit.  



  <I>Beispiel:</I>  25,5 Teile     1-Amino-4-(4'-methylphenoxy)-          benzol-5-sulfonsäure    werden in der üblichen  Weise     diazotiert.    Die     Diazolösung    vereinigt  man mit einer wässerigen Lösung von 14,3    Teilen     1-Amino-naphthalin    und 11,6 Teilen  einer etwa     30%igen    Salzsäure.

   Nach be  endeter     Kuppelung    wird der Farbstoff ab  geschieden, mit Natronlauge gelöst     und        wei-          terdiazotiert.    Die so erhaltene     Paste    trägt  man in ein     Gemisch    von 23 Teilen     2-Oxy-          naphthalin-4-sulfonsäure,    25 Teilen     Natrium-          Carbonat        und    etwa 300 Teilen Wasser unter       Eisküblung    ein und rührt,     bis    die Farbstoff  bildung beendet ist. Der Farbstoff wird ab  geschieden und getrocknet.



  <B> Additional patent </B> to main patent no. 218077. Process for the production of a bisazo dye. The present patent relates to a process for the preparation of a disazo dye, characterized in that the diazo compound of 1-amino-4- (4'-methylphenoxy) benzene-5-sulfonic acid is combined with 1-amino naphthalene, the obtained mono-.

         azo dye is further diazotized and the diazo compound is combined with 2-oxynaphthalene-4-sulfonic acid.



  The dye thus obtained is a dark, water-soluble powder that dissolves in concentrated sulfuric acid with a greenish-black color, and dyes wool or silk from an acid bath in black tones of very good fulling, sweat; Decatur and light fastness.



  <I> Example: </I> 25.5 parts of 1-amino-4- (4'-methylphenoxy) benzene-5-sulfonic acid are diazotized in the usual way. The diazo solution is combined with an aqueous solution of 14.3 parts of 1-amino-naphthalene and 11.6 parts of an approximately 30% strength hydrochloric acid.

   After the coupling has ended, the dye is separated off, dissolved with sodium hydroxide solution and further diazotized. The paste obtained in this way is added to a mixture of 23 parts of 2-oxynaphthalene-4-sulfonic acid, 25 parts of sodium carbonate and about 300 parts of water under ice-bucket and stirred until the formation of the dye has ended. The dye is separated off and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Di.sazo- farbstoffes, dadurch gekennzeichnet, dass man die Diazoverbindung von 1-Amino-4-(4'-me- thylphenoxy) - benzol - 5 - sulfonsäure mit 1- Aminonaphthalin vereinigt, den erhaltenen Monoazofarbstoff weiterdiazotiert und die Diazoverbindung mit 2-Oxynaphthalin-4-sul- fonsäure vereinigt. Claim: Process for the production of a di.sazo dye, characterized in that the diazo compound of 1-amino-4- (4'-methylphenoxy) benzene - 5 - sulfonic acid is combined with 1-aminonaphthalene, and the resulting monoazo dye is further diazotized and the diazo compound is combined with 2-oxynaphthalene-4-sulphonic acid. Der so erhaltene Farbstoff ist ein dunkles wasserlösliches Pulver, das sich in konzen trierter Schwefelsäure mit grünschwarzer Farbe löst, und färbt Wolle oder Seide aus saurem Bade in schwarzen Tönen von schi- guter Walk-, Schweiss-, Dekatur- und Licht echtheit. The dye obtained in this way is a dark, water-soluble powder that dissolves in concentrated sulfuric acid with a greenish-black color, and dyes wool or silk from an acid bath in black shades of good fullness, sweat, decatur and light fastness.
CH222129D 1939-10-21 1940-10-21 Process for the preparation of a disazo dye. CH222129A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE222129X 1939-10-21
CH218077T 1940-10-21

Publications (1)

Publication Number Publication Date
CH222129A true CH222129A (en) 1942-06-30

Family

ID=25726106

Family Applications (1)

Application Number Title Priority Date Filing Date
CH222129D CH222129A (en) 1939-10-21 1940-10-21 Process for the preparation of a disazo dye.

Country Status (1)

Country Link
CH (1) CH222129A (en)

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