CH209529A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH209529A
CH209529A CH209529DA CH209529A CH 209529 A CH209529 A CH 209529A CH 209529D A CH209529D A CH 209529DA CH 209529 A CH209529 A CH 209529A
Authority
CH
Switzerland
Prior art keywords
azo dye
preparation
dye
oxybenzene
diazotized
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 CH209529A publication Critical patent/CH209529A/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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Herstellung eines     Azofarbstoffes.       Vorliegendes Patent bezieht sich auf ein  Verfahren zur Herstellung eines     Azofarb-          stoffes,    dadurch gekennzeichnet, dass man       diazotiertes        4-(J'hlor-6-nitro-2-amino-l-oxyben-          zol    mit     1-(ss-Chlorpropionylamino)-3-oxynaph-          thalirr-6-sulforrsäure    kuppelt.  



  Der so erhaltene Farbstoff ist ein wasser  lösliches dunkles Pulver und färbt Wolle  beim     Nachchromieren    in gut egalisierenden,  sehr licht- und waschechten und hervorragend       walkechten    grauen Tönen.    <I>Beispiel:</I>    18,9 Teile     4-Chlor-6-nitro-2-amino-l-oxy-          benzol    werden     diazotiert.    Die erhaltene     Diazo-          lösung    lässt man in eine mit     überschüssigem          Natriumcarbonat    versetzte Lösung von 33  Teilen 1-(l-Chlorpr-opionylamino)-3-oxynaph-         thalin-6-sulfonsäure    laufen.

   Nach beendeter  Kuppelung wird der     Farbstoff    abgeschieden  und getrocknet.



  Process for the preparation of an azo dye. The present patent relates to a process for the production of an azo dye, characterized in that diazotized 4- (J'hlor-6-nitro-2-amino-1-oxybenzene with 1- (ss-chloropropionylamino) -3 -oxynaphthalirr-6-sulforric acid couples.



  The dye obtained in this way is a water-soluble dark powder and, when re-chromed, dyes wool in well-leveling, very lightfast and washfast and outstandingly milled gray tones. <I> Example: </I> 18.9 parts of 4-chloro-6-nitro-2-amino-1-oxybenzene are diazotized. The diazo solution obtained is allowed to run into a solution of 33 parts of 1- (1-chloropropionylamino) -3-oxynaphthalene-6-sulfonic acid to which excess sodium carbonate has been added.

   After coupling is complete, the dye is deposited and dried.

Claims (1)

<B>PATENTANSPRUCH:</B> Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man diazotiertes 4-Chlor-6-nitro-2-amiuo-l-oxyben- zol mit 1-(P-Chlorpropiorrylamino)-3-oxynaph- thalin-6-sulforrsäure kuppelt. Der so erhaltene Farbstoff ist ein wasser lösliches dunkles Pulver und färbt Wolle beim Nachchromieren in gut egalisierenden, sehr licht- und waschechten und hervorragend walkechten grauen Tönen. <B> PATENT CLAIM: </B> Process for producing an azo dye, characterized in that diazotized 4-chloro-6-nitro-2-amiuo-l-oxybenzene is mixed with 1- (P-chloropropylamino) -3 -oxynaphthalene-6-sulforric acid couples. The dye obtained in this way is a water-soluble dark powder and, when re-chromed, dyes wool in well-leveling, very lightfast and washfast and outstandingly milled gray tones.
CH209529D 1937-06-12 1938-06-03 Process for the preparation of an azo dye. CH209529A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE209529X 1937-06-12
CH204851T 1938-06-03

Publications (1)

Publication Number Publication Date
CH209529A true CH209529A (en) 1940-04-15

Family

ID=25724094

Family Applications (1)

Application Number Title Priority Date Filing Date
CH209529D CH209529A (en) 1937-06-12 1938-06-03 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH209529A (en)

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