CH230196A - Process for the preparation of an o, o'-dioxyazo dye. - Google Patents

Process for the preparation of an o, o'-dioxyazo dye.

Info

Publication number
CH230196A
CH230196A CH230196DA CH230196A CH 230196 A CH230196 A CH 230196A CH 230196D A CH230196D A CH 230196DA CH 230196 A CH230196 A CH 230196A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
dioxyazo
red
blue
Prior art date
Application number
Other languages
German (de)
Inventor
Ag J R Geigy
Original Assignee
Ag J R Geigy
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 Ag J R Geigy filed Critical Ag J R Geigy
Publication of CH230196A publication Critical patent/CH230196A/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
    • C09B45/00—Complex metal compounds of azo dyes
    • C09B45/02—Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
    • C09B45/14—Monoazo compounds
    • C09B45/16—Monoazo compounds containing chromium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pyridine Compounds (AREA)

Description

  

  Verfahren zur Darstellung eines     o,o'-Diogyazofarbstoffes.            Gegenhand        ,des        vomliegenden        Zusatzpaten-          tes    ist ein Verfahren zur     Darstellung        eines          o,o'-Dioxyazofarbstoffes,    dadurch     gekenn-          zeichnet,    dass     man        dna.zotiertes        6-Nitro-2-          amino-4-amylpheno,

  1        mit        2-OxynaphthaIin-4-          su@lfonsäure        kuppelt.     



       Der    neue     Farbstoff    stellt     ein        dunkles          Pulver    dar, welches     Wollde        nasch    dem     Einbad-          chrromierverfahren        in        blaumoten    Tönen von       hervorragender    Walk-,     Potting-    und     Licht-          echtheit    färbt.  



  Die Färbung aus schwach     saurem    Bade       isst    rot,     nachchromiert    wird sie     rotstichig     blau.  



  <I>Beispiel:</I>  22,4 kg     6-Nitro-2-amino-4-amylphenol     werden als Chlorhydrat in 160 Liter     Wasser     eingetragen und nach Zugabe von 14     Liter     konzentrierter     Salzsäure    mit 6,9 kg Nitrit  bei 0-5      diazotiert.    Die     Diazosuspensiou     fliesst ein in eine Spur     laekmusalkalisch    ge-         stellte    Lösung von 22,5 kg     2-Oxynaphthalin-          4-sulfonsäure,    .der noch 15 kg     kalzinierter     Soda und 20 Liter     technisches        Pyridin    zu  gegeben worden sind.

   Am folgenden Tag  salzt man mit 60 kg     Kochsalz    aus, filtriert       und    trocknet.



  Process for the preparation of an o, o'-diogyazo dye. On the other hand, of the additional patent on hand, is a process for the preparation of an o, o'-dioxyazo dye, characterized in that one contains 6-nitro-2-amino-4-amylpheno,

  1 is coupled with 2-oxynaphthalene-4-sulfonic acid.



       The new dye is a dark powder, which Wollde, after the single bath chromium plating process, dyes in blue-red tones with excellent fullness, potting and lightfastness.



  The color from weakly acidic baths eats red, after chroming it becomes reddish blue.



  <I> Example: </I> 22.4 kg of 6-nitro-2-amino-4-amylphenol are introduced as chlorohydrate into 160 liters of water and after adding 14 liters of concentrated hydrochloric acid with 6.9 kg of nitrite at 0-5 diazotized. The diazosuspensiou flows into a trace of laekmus-alkaline solution of 22.5 kg of 2-oxynaphthalene-4-sulfonic acid, to which 15 kg of calcined soda and 20 liters of technical grade pyridine have been added.

   The following day it is salted out with 60 kg of table salt, filtered and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines o,ö -Di- oxyazofarbstoffes, .dadurch gekennzeichnet, !dass man diazotiertes 6-Nitro-2-amino-4- amylphenal mit 2-Oxynaphthalin-4-sulfon- säure kuppelt. PATENT CLAIM: Process for the preparation of an o, o -dioxyazo dye, characterized in that diazotized 6-nitro-2-amino-4-amylphenal is coupled with 2-oxynaphthalene-4-sulfonic acid. Der neue Farbstoff stellt ein. dunkles Pulver dar, welches Wolle nach dem Einbad- charomierverfahren in blaumoten Tönen von hervorragender Walk-, Poüing- und Licht echtheit färbt. The new dye sets. dark powder, which dyes wool in blue-red tones with excellent fulling, pouching and lightfastness using the single bath charoming process. Die Färbung aus schwach saurem Bade isatr rot, nachehromiert wird, sie rotstriühig blau. The color from weakly acidic bath is red, nachehromiert, it is red-streaked blue.
CH230196D 1941-11-04 1941-11-04 Process for the preparation of an o, o'-dioxyazo dye. CH230196A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH230196T 1941-11-04
CH226691T 1943-04-30

Publications (1)

Publication Number Publication Date
CH230196A true CH230196A (en) 1943-12-15

Family

ID=25727013

Family Applications (1)

Application Number Title Priority Date Filing Date
CH230196D CH230196A (en) 1941-11-04 1941-11-04 Process for the preparation of an o, o'-dioxyazo dye.

Country Status (1)

Country Link
CH (1) CH230196A (en)

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