CH180261A - Process for the preparation of an o-amidoazo dye. - Google Patents

Process for the preparation of an o-amidoazo dye.

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Publication number
CH180261A
CH180261A CH180261DA CH180261A CH 180261 A CH180261 A CH 180261A CH 180261D A CH180261D A CH 180261DA CH 180261 A CH180261 A CH 180261A
Authority
CH
Switzerland
Prior art keywords
sep
dye
amidoazo
preparation
azo
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 CH180261A publication Critical patent/CH180261A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

      Verfahren    zur Herstellung eines     o-Amidoazofarbstoffes.     
EMI0001.0003     
  
    Es <SEP> wurde <SEP> gefunden, <SEP> dass <SEP> o-Nitroazofarb  ;toffe <SEP> aus <SEP> solchen <SEP> aromatischen <SEP> Diazoverbin  dungen, <SEP> die <SEP> o-ständig <SEP> zur <SEP> Diazogruppe <SEP> Nitro  gruppen <SEP> tragen, <SEP> und <SEP> beliebigen <SEP> Kupplungs  komponenten, <SEP> gegebenenfalls <SEP> nach <SEP> weiterer
<tb>  U <SEP> mwandlung, <SEP> durch <SEP> die <SEP> Behandlung <SEP> mit
<tb>  Ferrosalzen <SEP> in <SEP> Akalisehem <SEP> Medium <SEP> in <SEP> die
<tb>  eni:spreclienden <SEP> o-Amidoazofarbstoffe <SEP> über  :;

  eführt <SEP> werden. <SEP> Die <SEP> neuen <SEP> Produkte <SEP> sollen
<tb>  iils <SEP> Farbstoffe <SEP> oder <SEP> als <SEP> Zwischenprodukte <SEP> zur
<tb>  Herstellung <SEP> von <SEP> Farbstoffen <SEP> Verwendung
<tb>  finden.
<tb>  



  Gegenstand <SEP> des <SEP> vorliegenden <SEP> Patentes <SEP> ist
<tb>  ein <SEP> Verfahren <SEP> zur <SEP> Herstellung <SEP> eines <SEP> o-Amido  ,izofa.rbstoffes. <SEP> Es <SEP> besteht <SEP> darin, <SEP> da,ss <SEP> man
<tb>  den <SEP> Farbstoff <SEP> 2'-Nitroben7ol-l'-siilfonsäure  1'-1-azo-3-aminonaphthalin <SEP> in <SEP> einem <SEP> alka  liseheri <SEP> Nedium <SEP> mit <SEP> einem <SEP> Ferrosalz <SEP> be  llaadelt.
<tb>  



  <I>Beispiel:</I>
<tb>  37,4 <SEP> Gewiehtsteile <SEP> des <SEP> Farbstoffes <SEP> ?'  iiitrobenzol--t'-siilfonsa.nres <SEP> NTati,ium-1'-1-azo  ?-aminonaphtha,lin <SEP> werden <SEP> in <SEP> etwa <SEP> zwei <SEP> Liter
<tb>  @@'asser <SEP> anbeschlämmt. <SEP> Hierzu <SEP> gibt <SEP> man            120    cm' ?0%iges Ammoniak und     lä.sst    unter  gutem Rühren bei     etwa    40<B>\</B>e     ine    Lösung von  168 g     Ferrosulfat        (FeS04    . 7 H-0) in etwa  ein Liter Wasser einlaufen.

   Dann wird auf  90 bis<B>100</B>   erwärmt, und der mittelst       Mineralsäure    aus der durch Absaugen von  Eisenschlamm befreiten     Farbstofflösung        ab-          gesehiedene    Farbstoff wird     zweckmässig     durch Behandeln mit Eisessig von Verun  reinigungen befreit. Das neue Produkt löst  sieb.     ,orangerot    in     Sodalösung.  



      Process for the preparation of an o-amidoazo dye.
EMI0001.0003
  
    <SEP> was found <SEP>, <SEP> that <SEP> o-nitroazo dyes <SEP> from <SEP> such <SEP> aromatic <SEP> diazo compounds, <SEP> the <SEP> o-permanent <SEP> to <SEP> diazo group <SEP> nitro groups <SEP> wear <SEP> and <SEP> any <SEP> coupling components, <SEP> if necessary <SEP> after <SEP> others
<tb> U <SEP> conversion, <SEP> through <SEP> the <SEP> treatment <SEP> with
<tb> Ferrous salts <SEP> in <SEP> Akalisehem <SEP> Medium <SEP> in <SEP> die
<tb> eni: corresponding <SEP> o-amidoazo dyes <SEP> via:;

  be performed <SEP>. <SEP> The <SEP> new <SEP> products <SEP> should
<tb> iils <SEP> dyes <SEP> or <SEP> as <SEP> intermediate products <SEP> for
<tb> Production <SEP> of <SEP> dyes <SEP> use
<tb> find.
<tb>



  The subject of <SEP> of the <SEP> present <SEP> patent <SEP> is
<tb> a <SEP> process <SEP> for the <SEP> production <SEP> of a <SEP> o-amido, izofa dye. <SEP> <SEP> consists of <SEP>, <SEP> there, ss <SEP> man
<tb> the <SEP> dye <SEP> 2'-nitroben7ol-l'-silfonic acid 1'-1-azo-3-aminonaphthalene <SEP> in <SEP> a <SEP> alka liseheri <SEP> medium <SEP> loaded with <SEP> a <SEP> ferrous salt <SEP>.
<tb>



  <I> Example: </I>
<tb> 37.4 <SEP> parts by weight <SEP> of the <SEP> dye <SEP>? ' iiitrobenzol - t'-siilfonsa.nres <SEP> NTati, ium-1'-1-azo? -aminonaphtha, lin <SEP>, <SEP> in <SEP> about <SEP> two <SEP> liters
<tb> @@ 'asser <SEP> puffed up. <SEP> <SEP> <SEP> is added to <SEP> 120 cm? 0% ammonia and, with thorough stirring, leaves a solution of 168 g ferrous sulfate (FeS04. 7 H -0) pour in about a liter of water.

   It is then heated to 90 to 100, and the dye separated by means of mineral acid from the dye solution freed from iron sludge by suction is expediently freed from impurities by treatment with glacial acetic acid. The new product solves sie. , orange-red in soda solution.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines o-Amido- azofarbstoffes, dadurch gekennzeichnet, dass man den Farbstoff 2'-Nitrobenzol-4'-sulfon- säure-1',l-azo-2\-aminonaphthalin in einem al kalischen Medium mit einem Ferrosalz be handelt. Das erhaltene Produkt löst sich orangerot. in S-odalösung. PATENT CLAIM: Process for the production of an o-amido azo dye, characterized in that the dye 2'-nitrobenzene-4'-sulfonic acid-1 ', l-azo-2 \ -aminonaphthalene in an alkaline medium with a ferrous salt be treated. The product obtained dissolves orange-red. in S-oda solution.
CH180261D 1933-05-18 1934-04-30 Process for the preparation of an o-amidoazo dye. CH180261A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE180261X 1933-05-18
CH175357T 1934-04-30

Publications (1)

Publication Number Publication Date
CH180261A true CH180261A (en) 1935-10-15

Family

ID=25719676

Family Applications (1)

Application Number Title Priority Date Filing Date
CH180261D CH180261A (en) 1933-05-18 1934-04-30 Process for the preparation of an o-amidoazo dye.

Country Status (1)

Country Link
CH (1) CH180261A (en)

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