CH199096A - Process for the preparation of an o-oxyazo dye. - Google Patents

Process for the preparation of an o-oxyazo dye.

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Publication number
CH199096A
CH199096A CH199096DA CH199096A CH 199096 A CH199096 A CH 199096A CH 199096D A CH199096D A CH 199096DA CH 199096 A CH199096 A CH 199096A
Authority
CH
Switzerland
Prior art keywords
dye
oxyazo
preparation
parts
oxybenzene
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 CH199096A publication Critical patent/CH199096A/en

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Description

  

  Verfahren zur Herstellung eines     o-Ogyazofarbstoües.       Nach dem im Hauptpatent beschriebenen  Verfahren erhält man einen  Wolle nach dem       Einbad-Chromverfahren    in     violettbraunen     Tönen färbenden Farbstoff, indem man 4  Nitro-6-chlor-2-amino-l-oxybenzol     diazotiert     und die     Diazoverbindung    mit     2-Oxynaphtha-          lin-6-sulfonsäureanilid-2'-carbonsäure    kup  pelt.  



  Wie weiter gefunden     wurde,    erhält man  einen Farbstoff mit     ähnliehen    Echtheits  eigenschaften, wenn man     4,6-Dinitro-2-amino-          1-oxybenzol        diazotiert        und    die     Diazoverbin-          dung    mit     1-Oxynaphthalin-5-sulfonsäureani-          lid-2'-carbonsäure    kuppelt.  



  <I>Beispiel:</I>  In eine Lösung von 35 Teilen     1-Oxynaph-          thalin-5-sulfonsäureanilid-2'-carbonsäure    und  25 Teilen Soda in etwa 1000 Teilen Wasser  läuft eine aus 19,9 Teilen     4,6-Dinitro-2-          amino-l-oxybenzol,    6,9 Teilen     Natriumnitrit     und 25 Teilen (Salzsäure von 12'     B6    in etwa    500 Teilen Wasser hergestellte     Diazoverbin-          dung.    Der in üblicher Weise     aufgearbeitete          Farbstoff        ist    in trockenem Zustande ein  dunkles Pulver,

       welches    sich mit     rotvioletter     Farbe in Wasser löst und auf Wolle nach  dem     Einbad-Chromverfahren    ein     grünstichi-          ges    Schwarz von .guten Echtheitseigenschaf  ten ergibt.



  Method of making an o-ogyazo dye. According to the process described in the main patent, a dye is obtained which dyes wool by the single-bath chromium process in violet-brown shades by diazotizing 4 nitro-6-chloro-2-amino-1-oxybenzene and treating the diazo compound with 2-oxynaphthalin-6- sulfonic anilide-2'-carboxylic acid kup pelt.



  As has also been found, a dye with similar fastness properties is obtained if 4,6-dinitro-2-amino-1-oxybenzene is diazotized and the diazo compound is diazotized with 1-oxynaphthalene-5-sulfonic acid anilide-2'-carboxylic acid clutch.



  <I> Example: </I> A solution of 35 parts of 1-oxynaphthalene-5-sulfonic acid anilide-2'-carboxylic acid and 25 parts of soda in about 1000 parts of water contains 19.9 parts of 4,6-dinitro -2-amino-1-oxybenzene, 6.9 parts of sodium nitrite and 25 parts (hydrochloric acid of 12 'B6 in about 500 parts of water produced diazo compound. The dye worked up in the usual way is a dark powder in the dry state,

       which dissolves in water with a red-violet color and produces a greenish black with good fastness properties on wool using the single-bath chrome process.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines o-Oxy- a.zofarbstoffes, dadurch gekennzeichnet, dass man 4,6-Dinitro-2-amino-l-oxybenzol dia.zo- tiert und die Diazoverbindung mit 1-Oxy- naphthalin-5-sulfonsäureanilid-92'-carbonsäure kuppelt. Der Farbstoff ist trocken eindunk les Pulver, dass sich mit rotvioletter Farbe in Wasser löst. Er färbt auf Wolle nach dem Einbad-Chromverfahren ein grünstichiges Schwarz von guten Echtheitseigenschaften. PATENT CLAIM: Process for the production of an o-oxy-a.zo dye, characterized in that 4,6-dinitro-2-amino-1-oxybenzene is dia.zo- and the diazo compound with 1-oxynaphthalene-5-sulfonic acid anilide -92'-carboxylic acid couples. The dye is a dry, dark powder that dissolves in water with a red-violet color. It dyes a greenish black with good fastness properties on wool using the single-bath chrome process.
CH199096D 1936-01-17 1936-11-04 Process for the preparation of an o-oxyazo dye. CH199096A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE199096X 1936-01-17
DE30636X 1936-06-03
CH197281T 1936-11-04

Publications (1)

Publication Number Publication Date
CH199096A true CH199096A (en) 1938-07-31

Family

ID=27177839

Family Applications (1)

Application Number Title Priority Date Filing Date
CH199096D CH199096A (en) 1936-01-17 1936-11-04 Process for the preparation of an o-oxyazo dye.

Country Status (1)

Country Link
CH (1) CH199096A (en)

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