CH301638A - Process for the preparation of a new monoazo dye. - Google Patents

Process for the preparation of a new monoazo dye.

Info

Publication number
CH301638A
CH301638A CH301638DA CH301638A CH 301638 A CH301638 A CH 301638A CH 301638D A CH301638D A CH 301638DA CH 301638 A CH301638 A CH 301638A
Authority
CH
Switzerland
Prior art keywords
monoazo dye
parts
preparation
dye
new
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft Ciba
Original Assignee
Ciba 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 Ciba Geigy filed Critical Ciba Geigy
Publication of CH301638A publication Critical patent/CH301638A/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)
  • Coloring (AREA)

Description

  

  Verfahren zur Herstellung eines neuen     Monoazofarbstoffes.       Es wurde gefunden, dass man zu einem  neuen, wertvollen     Monoazofarbst.off        gelangt,     wenn man     dia.zotieries        4-Nitro-2-amino-l-oxy-          benzol=6-sulfonsäureamid    mit     1-Benzoylamino-          7-oxynaphthalin    kuppelt.  



  Der neue Farbstoff stellt ein dunkles Pul  ver dar, welches Wolle sowohl nach dem     Nach-          ehromier-    wie auch nach dem     Einb'adchromier-          verfahren    in oliven Tönen färbt, welche eine  vorzügliche     Walkechtheit    aufweisen.  



  Die Kupplung des     diazotierten        4-Nitroo-2-          amino-l-oxybenzol-ss-sulfonsäiireamids    wird       vorzugsweise    in alkalischem Medium durch  geführt.  



  <I>Beispiel:</I>  11,6 Teile     4-Nitro-2-amino-l-oxybenzol-6-          su.lfonsä.urea.mid    werden in 100 Teilen Wasser  und 6,7 Teilen     30o/oiger        Natriumhydroxyd-          lösung    gelöst. Nach Zugabe von 3,4 Teilen       Natriumnitrrit        wird    das Ganze in eine  Lösung von 17,5 Teilen     30a/diger    Salz  säure und 150 Teilen     Eis    ausgegossen, wobei  
EMI0001.0027     
  
    die <SEP> in <SEP> Wasser <SEP> schwer <SEP> lösliche <SEP> Di.azoverb'in- <SEP> i;       ausfällt.

   Sie wird     abfiltriert    und in eine  Lösung aus 14,0 Teilen     1-Benzoylamino-7-oxy-          naphthalin,    100 Teilen Wasser und 7,0 Teilen  30     o/oiger        Natriumhydxoxydlösiulg,        sowie    5  Teilen     Natriumcarbonat    eingetragen. Man  rührt bei 10 bis 12 , bis keine     Diazoverbindung     mehr nachweisbar     ist.    Der entstandene Farb  stoff wird durch Hinzufügen von Natrium  chlorid vollständig     abgeschieden.  



  Process for the preparation of a new monoazo dye. It has been found that a new, valuable monoazo dye is obtained if dia.zotieries 4-nitro-2-amino-1-oxybenzene = 6-sulfonic acid amide is coupled with 1-benzoylamino-7-oxynaphthalene.



  The new dye is a dark powder which dyes wool in olive tones, both using the finishing method and also using the chrome-plated method, which have excellent flexing fastness.



  The coupling of the diazotized 4-nitroo-2-amino-1-oxybenzene-ß-sulfonic acid amide is preferably carried out in an alkaline medium.



  <I> Example: </I> 11.6 parts of 4-nitro-2-amino-1-oxybenzene-6-su.lfonsä.urea.mid are dissolved in 100 parts of water and 6.7 parts of 30% sodium hydroxide solution solved. After adding 3.4 parts of sodium nitrite, the whole is poured into a solution of 17.5 parts of 30a / diger hydrochloric acid and 150 parts of ice, with
EMI0001.0027
  
    the <SEP> in <SEP> water <SEP> poorly <SEP> soluble <SEP> Di.azoverb'in- <SEP> i; fails.

   It is filtered off and introduced into a solution of 14.0 parts of 1-benzoylamino-7-oxynaphthalene, 100 parts of water and 7.0 parts of 30% sodium hydroxide solution and 5 parts of sodium carbonate. The mixture is stirred at 10 to 12 until no more diazo compound can be detected. The resulting dye is completely separated out by adding sodium chloride.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Monoazo- farbstoffes, dadurch gekennzeichnet, dass man diazotiertes 4-Nitro-2-amino-l-oxybenzol-6-sul- fonsäureamid mit 1-Benzoylamino-7-oxynapli- thalin kuppelt. PATENT CLAIM: Process for the production of a monoazo dye, characterized in that diazotized 4-nitro-2-amino-1-oxybenzene-6-sulphonic acid amide is coupled with 1-benzoylamino-7-oxynapli- thalin. Der neue Farbstoff stellt ein dunkles Pul ver dar, welches Wolle sowohl nachdem Naeh- chromier- wie auch nach dem Einbadchromier- verfahren in oliven Tönen färbt, welche eine vorzügliche Walkechtheit aufweisen. The new dye is a dark powder, which dyes wool in olive shades, both after the sewing and the single bath chroming process, which have excellent flexing fastness.
CH301638D 1952-01-16 1952-01-16 Process for the preparation of a new monoazo dye. CH301638A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH295675T 1952-01-16
CH301638T 1952-01-16

Publications (1)

Publication Number Publication Date
CH301638A true CH301638A (en) 1954-09-15

Family

ID=25733626

Family Applications (1)

Application Number Title Priority Date Filing Date
CH301638D CH301638A (en) 1952-01-16 1952-01-16 Process for the preparation of a new monoazo dye.

Country Status (1)

Country Link
CH (1) CH301638A (en)

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