CH159055A - Process for the preparation of a primary disazo dye. - Google Patents

Process for the preparation of a primary disazo dye.

Info

Publication number
CH159055A
CH159055A CH159055DA CH159055A CH 159055 A CH159055 A CH 159055A CH 159055D A CH159055D A CH 159055DA CH 159055 A CH159055 A CH 159055A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
disazo dye
blue
wool
Prior art date
Application number
Other languages
German (de)
Inventor
A-G J R Geigy
Original Assignee
Geigy Ag J R
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 Geigy Ag J R filed Critical Geigy Ag J R
Publication of CH159055A publication Critical patent/CH159055A/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B33/00Disazo and polyazo dyes of the types A->K<-B, A->B->K<-C, or the like, prepared by diazotising and coupling
    • C09B33/02Disazo dyes
    • C09B33/08Disazo dyes in which the coupling component is a hydroxy-amino compound
    • C09B33/10Disazo dyes in which the coupling component is a hydroxy-amino compound in which the coupling component is an amino naphthol

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

Description

  

  Zusatzpatent zum Hauptpatent     Nr.   <B>155452.</B>    Verfahren zur Darstellung eines primären     Disazofarbstoffes.       Es wurde gefunden,     dass    man einen     rieuen     wertvollen primären     Disazofarbstoff    erhält,

    wenn man     1.8-Auainonaphthol-3.6-disulfo-          säure    in saurer Lösung mit     derDlazoverbin-          dung    von     1-Chlor-4-amino   <B>-</B> 2<B>-</B>     benzolsulfanilid     kuppelt und den so erhaltenen     Monoazofarb-          stoff    weiter in alkalischer Lösung mit der       Diazoverbindung    von     o-Amiiiophenyl-o-tolyl-          äther    kombiniert. Der neue Farbstoff stellt  ein     brortzeiarbiges    Pulver dar, welches sich  in Wasser mit blauer, in konzentrierter  Schwefelsäure mit grüner Farbe löst.

   Er färbt  auf Wolle und Seide ein Blauschwarz von  vorzüglicher     Walk-        bezw.        Wasserechtbeit    und  sehr guter Lichtechtheit.  



  <I>Beispiel 2:</I>  Die aus<B>28,2 kg 1 -</B> Chlor<B>-</B> 4<B>-</B>     amino   <B>-</B>     2-          benzolsulfanilid    (kristallisierte Substanz vom  Schmelzpunkt<B>152 1)</B> erhaltene     Diazolösung     wird in<B>31,9 kg</B> frisch gefällte<B>1. 8 -</B>     Amino-          naphthol-3.        6-disulfosäure    eingetragen.

   Nach  dem die in stark saurer Lösung bei gewöhn-         licher    Temperatur sich vollziehende Kupplung  vollendet ist, wird entweder der     Monoazofarb-          stoff    isoliert und zur weiteren Kombination  wieder in Wasser, überschüssiger Soda und  20<B>kg</B> Ammoniak<B>(25</B>     '/o)    gelöst,

   oder es wird  die ursprüngliche saure     Koaibinationsmasse     unmittelbar mit Natronlauge     bezw.    Soda  neutralisiert und hierauf mit überschüssiger       Soda        und        20        kg        Ammoniak        (25        %)        versetzt.     Zur alkalischen Lösung des     Monoazofarb-          stoffes        lässt    man sodann unter gutem     Rübren     die aus<B>19,

  9 kg</B>     o-Aminophenyl-    o<B>-</B>     tolyläther     erhaltene     DiazolÖsung    unter gutem Rühren  bei<B>0-5 0</B> einfliessen. Nach Verlauf mehrerer  Stunden wird aufgewärmt, der Farbstoff     aus-          gesalzen,        abfiltriert    und getrocknet.  



  Der erhaltene Farbstoff bildet ein bronze  farbiges Pulver, das     in    Wasser mit blauer,  in konzentrierter Schwefelsäure mit grüner  Farbe löslich ist. Er färbt auf Wolle und  Seide ein Blauschwarz von vorzüglicher     Walk-          bezw.    Wasserechtheit und     schi-    guter Licht  echtheit.



  Additional patent to main patent no. <B> 155452. </B> Process for the preparation of a primary disazo dye. It has been found that one obtains a very valuable primary disazo dye,

    when 1.8-Auainonaphthol-3,6-disulfonic acid in acidic solution is coupled with the dlazo compound of 1-chloro-4-amino <B> - </B> 2 <B> - </B> benzenesulfanilide and the monoazo color thus obtained - substance further combined in alkaline solution with the diazo compound of o-amiiophenyl-o-tolyl ether. The new dye is a brown powder that dissolves in water with a blue color, in concentrated sulfuric acid with a green color.

   He dyes wool and silk a blue-black of exquisite milled or wool. Water fastness and very good light fastness.



  <I> Example 2: </I> The one from <B> 28.2 kg 1 - </B> chlorine <B> - </B> 4 <B> - </B> amino <B> - </ B> 2-benzenesulfanilide (crystallized substance with a melting point <B> 152 1) </B> is diazo solution obtained in <B> 31.9 kg </B> freshly precipitated <B> 1. 8 - Amino-naphthol-3. 6-disulfonic acid entered.

   After the coupling, which takes place in a strongly acidic solution at normal temperature, is complete, either the monoazo dye is isolated and for further combination again in water, excess soda and 20 kg ammonia ( 25 </B> '/ o) solved,

   or it is the original acidic koaibination mass directly BEZW with caustic soda. Soda neutralized and then treated with excess soda and 20 kg ammonia (25%). For the alkaline solution of the monoazo dye, the mixture from <B> 19,

  Pour in 9 kg of o-aminophenyl- o-tolyl ether obtained diazole solution with thorough stirring at <B> 0-5 0 </B>. After several hours, it is warmed up, the dye is salted out, filtered off and dried.



  The dye obtained forms a bronze-colored powder which is soluble in water with a blue color and in concentrated sulfuric acid with a green color. He dyes wool and silk a blue-black of exquisite milled or wool. Water fastness and ski good light fastness.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen primären Disazofarbstoffes, dadurch gekenn zeichnet, dass man 1.8-Aminoiiaphthol-3.6- disulfosäure in saurerLösung mit derDiazo- verbindung von 1-Ohlor-4-amino-2-beiizolsulf- anilid kombiniert und den so erhaltenen Monoazofarbstoff sodann in alkalischer Lösung mit derDiazoverbindung auso-Aminophenyl- o-tolyläther kuppelt. Claim: Process for the preparation of a new primary disazo dye, characterized in that 1,8-aminoaphthol-3,6-disulfonic acid is combined in acidic solution with the diazo compound of 1-chloro-4-amino-2-beizolsulfanilide and the monoazo dye thus obtained is then combined in alkaline solution with the diazo compound from o-aminophenyl-o-tolyl ether. Der neue Farbstoff stellt ein bronzefarbiges Pulver dar, das sich in Was ser mit blauer, in konzentrierter Schwefel säure mit grüner Farbe löst. Er färbt auf Wolle und Seide ein Blauschwarz von vor züglicher Walk- bezw. Wasserechtheit und sehr guter Lichtechtbeit. <B>-</B> The new dye is a bronze-colored powder that dissolves in water with a blue color and in concentrated sulfuric acid with a green color. He dyes wool and silk a blue-black from brisk boiled or milled wool. Waterfastness and very good lightfastness. <B> - </B>
CH159055D 1932-01-01 1932-01-01 Process for the preparation of a primary disazo dye. CH159055A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH155452T 1932-01-01
CH159055T 1932-01-01

Publications (1)

Publication Number Publication Date
CH159055A true CH159055A (en) 1932-12-15

Family

ID=25716587

Family Applications (1)

Application Number Title Priority Date Filing Date
CH159055D CH159055A (en) 1932-01-01 1932-01-01 Process for the preparation of a primary disazo dye.

Country Status (1)

Country Link
CH (1) CH159055A (en)

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