CH99284A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH99284A
CH99284A CH99284DA CH99284A CH 99284 A CH99284 A CH 99284A CH 99284D A CH99284D A CH 99284DA CH 99284 A CH99284 A CH 99284A
Authority
CH
Switzerland
Prior art keywords
preparation
chloro
azo dye
dyes
acid
Prior art date
Application number
Other languages
German (de)
Inventor
Griesheim-Elektron Chem Fabrik
Original Assignee
Griesheim Elektron Chem Fab
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 Griesheim Elektron Chem Fab filed Critical Griesheim Elektron Chem Fab
Publication of CH99284A publication Critical patent/CH99284A/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
    • C09B29/00—Monoazo dyes prepared by diazotising and coupling
    • C09B29/10—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group
    • C09B29/18—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group ortho-Hydroxy carbonamides
    • C09B29/20—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group ortho-Hydroxy carbonamides of the naphthalene series

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Description

  

  Verfahren zur Herstellung eines     Azofarbstoffes.       Es wurde gefunden,     dass    man zu sehr       bäuchechten    Farbstoffen von     Alizurinnuan-          cen    gelangt, wenn man die     Diazoverbindung     von     4--Chlor-2-Toluidin    mit dem     4-Chlor-3-          Toluidid    der     2-3-Oxynaplito#säure    kuppelt.  Der Farbstoff kann für sich allein zwecks  Verwendung als roter Pigmentfarbstoff her  gestellt werden, er kann aber auch auf der  vegetabilischen Faser     erzeuggt    werden.

   Die       Bäucheclitlieit    dieses Farbstoffes ist im  Gegensatz zu derjenigen ähnlich zusammen  gesetzter Farbstoffe ganz überraschend.  



  <I>Beispiel:</I>  Die     aus    14,1     gr        4-Chlor-2-toluidin    in<B>üb-</B>  licher Weise dargestellte     Diazoverbindung          lässt    man unter     RülLren    in eine wässerige       ,#usl)ension    von<B>33</B>     gr    2<B>-</B>     3-Oxyilaplifoösäure-          4-Clilor-3-toluidid    einfliessen, bereitet durch  Auflösen in Natronlauge und Wiederaus-    fällen mit verdünnter Essigsäure. Der Farb  stoff scheidet sich in roten Flocken aus;  darauf wird filtriert, gewaschen und ge  trocknet.



  Process for the preparation of an azo dye. It has been found that alizurin dyes that are very stable to the stomach can be obtained if the diazo compound of 4-chloro-2-toluidine is coupled with the 4-chloro-3-toluidide of 2-3-oxynaplito acid. The dye can be made on its own for use as a red pigment, but it can also be generated on the vegetable fiber.

   The tummy class of this dye is quite surprising in contrast to that of similarly composed dyes.



  <I> Example: </I> The diazo compound prepared from 14.1 g of 4-chloro-2-toluidine in the usual way is allowed to pour into an aqueous, # usl) ension of <B> while turning B> 33 </B> gr 2 <B> - </B> 3-Oxyilaplifoic acid- 4-Clilor-3-toluidide, prepared by dissolving in sodium hydroxide solution and reprecipitating with dilute acetic acid. The dye separates out in red flakes; it is then filtered, washed and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellun,#, eines Azo- ein kirbstoffes, dadurch gekennzeichnet, dass man die Diazoverbindung des 4-Chlor-2-to- luidins mit dem 4-Chlor-3-toluidid der 2. 3- Oxynaphto#säure kombiniert. PATENT CLAIM: A process for the production of an azo-a cherry material, characterized in that the diazo compound of 4-chloro-2-toluidine is combined with the 4-chloro-3-toluidide of 2. 3- oxynaphtoic acid. Der neue Farb stoff hat Alizarinnuance und die mit ihm auf der Faser erzeugten Färbungen sind gegenüber den mit bekannten ähnlich zu- sainmezigesetzten Farbstoffen hergestellten vollkommen bäuchecht. The new dyestuff has an alizarin nuance and the dyes produced on the fiber with it are completely stomach-resistant compared to those produced with known similarly added dyes.
CH99284D 1921-08-03 1922-06-20 Process for the preparation of an azo dye. CH99284A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE553267X 1921-08-03

Publications (1)

Publication Number Publication Date
CH99284A true CH99284A (en) 1923-05-16

Family

ID=6563675

Family Applications (1)

Application Number Title Priority Date Filing Date
CH99284D CH99284A (en) 1921-08-03 1922-06-20 Process for the preparation of an azo dye.

Country Status (2)

Country Link
CH (1) CH99284A (en)
FR (1) FR553267A (en)

Also Published As

Publication number Publication date
FR553267A (en) 1923-05-19

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