CH190318A - Process for the preparation of a new monoazo dye. - Google Patents

Process for the preparation of a new monoazo dye.

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Publication number
CH190318A
CH190318A CH190318DA CH190318A CH 190318 A CH190318 A CH 190318A CH 190318D A CH190318D A CH 190318DA CH 190318 A CH190318 A CH 190318A
Authority
CH
Switzerland
Prior art keywords
monoazo dye
preparation
new monoazo
new
parts
Prior art date
Application number
Other languages
German (de)
Inventor
Limited Imperial Ch Industries
Original Assignee
Ici Ltd
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 Ici Ltd filed Critical Ici Ltd
Publication of CH190318A publication Critical patent/CH190318A/en

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Description

  

  Verfahren zur Herstellung eines neuen     Nonoazofarbstoffes.       Vorliegende Erfindung bezieht sich auf  ein Verfahren zur Herstellung eines neuen       Monoazofarbstoffes.     



  Der neue     Monoazofarbstoff    löst sieh in       warmem    Wasser mit     bläulich-roter    Farbe  und in konzentrierter 'Schwefelsäure     mit     roter Farbe. Er färbt Wolle aus. einem neu  tralen oder sauren Bad in reinen roten Tönen  von     guter        Wasch-    und     Walkechtheit.     



  Gemäss der Erfindung     wird        p-Dodecyl-          anilin        @diazotiert    und mit     1-Butyrylamino-8-          naphthol-4    :     6-disulfosäure    gekuppelt.

      <I>Beispiel:</I>    26,1     Teile    p -     Dodecylanilin    (hergestellt       n        a,c        'h        e        lem        von        Beran        für        p-Octylanilin        an-          gewandten    Verfahren,     Ber.    der deutschen       chem.    Ges., 1885, 1,8, 132)     werden    15 Minu  ten bei gewöhnlicher Temperatur mit 250  Teilen Salzsäure<B>(36%)</B> und 300 Teilen    Wasser umgerührt,

   worauf das Gemisch auf  <B>50'</B> C erwärmt wird,     bis    eine homogene  Paste sieh bildet, und     genügend        Eis    zugesetzt  wird, um das     Ganze    auf 5   C abzukühlen.

    Bei dieser     Temperatur        wird        das    Amin durch  langsamen Zusatz von 69     Teilen    einer zehn  prozentigen wässerigen Lösung von Natrium  nitrit     diazotiert,    wobei     eine        blasse,    grünlich  gelbe     Lösung    erhalten     wird.    Wenn die     Di-          azotierung    vollendet ist,     lässt    man die     Diazo-          lösung    in eine Lösung von 38,

  9 Teilen     1-Bu-          tyrylamino-8-naphthol-4    :     6-disulfosäure    und  30 Teilen Natriumkarbonat in 200 Teilen  Wasser einfliessen. Die Kupplung     ist    rasch  beendet. Alsdann     wird        filtriert,    .gewaschen  und     getrocknet.  



  Process for the preparation of a new nonoazo dye. The present invention relates to a process for the preparation of a new monoazo dye.



  The new monoazo dye dissolves in warm water with a bluish-red color and in concentrated sulfuric acid with a red color. He dyes wool. a neutral or acidic bath in pure red tones with good wash and milled fastness.



  According to the invention, p-dodecylaniline is @diazotized and coupled with 1-butyrylamino-8-naphthol-4: 6-disulfonic acid.

      <I> Example: </I> 26.1 parts of p - dodecylaniline (manufactured na, c 'he lem by Beran for p-octylaniline applied processes, Ber. Der Deutschen chem. Ges., 1885, 1.8, 132) are stirred for 15 minutes at normal temperature with 250 parts of hydrochloric acid <B> (36%) </B> and 300 parts of water,

   The mixture is then heated to 50 ° C until a homogeneous paste is formed and enough ice is added to cool the whole thing down to 5 ° C.

    At this temperature the amine is diazotized by the slow addition of 69 parts of a ten percent aqueous solution of sodium nitrite, a pale, greenish yellow solution being obtained. When the diazotization is complete, the diazo solution is immersed in a solution of 38,

  Pour 9 parts of 1-butyrylamino-8-naphthol-4: 6-disulfonic acid and 30 parts of sodium carbonate into 200 parts of water. The coupling ends quickly. It is then filtered, washed and dried.

Claims (1)

PA TFNT A N@PR.7Tf;FT' Verfahren zur Herstellung eines neuen Monoazofarbstoffes, dadurch .gekennzeichnet, dass man p-Dodecylanilin diazotiert und mit 1-Butyrylamino-8-naphthol-4 : 6-disulf osäure kuppelt. PA TFNT A N@PR.7Tf; FT 'Process for the preparation of a new monoazo dye, characterized in that p-dodecylaniline is diazotized and coupled with 1-butyrylamino-8-naphthol-4: 6-disulfonic acid. Der neue Monoazofarbstoff löst sich in warmem Wasser mit Farbe und in konzentrierter Sehwefelsäure mit roter Farbe. Er färbt Wolle aus einem neutralen oder sauren Bad in reinen roten Tönen von 0.uter Waseh- und Walkeehtheit. The new monoazo dye dissolves in warm water with color and in concentrated sulfuric acid with red color. He dyes wool from a neutral or acidic bath in pure red shades of zero water and fulling resistance.
CH190318D 1934-06-28 1935-06-28 Process for the preparation of a new monoazo dye. CH190318A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB190318X 1934-06-28
CH184012T 1935-06-28

Publications (1)

Publication Number Publication Date
CH190318A true CH190318A (en) 1937-04-15

Family

ID=25720955

Family Applications (1)

Application Number Title Priority Date Filing Date
CH190318D CH190318A (en) 1934-06-28 1935-06-28 Process for the preparation of a new monoazo dye.

Country Status (1)

Country Link
CH (1) CH190318A (en)

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