CH214830A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH214830A
CH214830A CH214830DA CH214830A CH 214830 A CH214830 A CH 214830A CH 214830D A CH214830D A CH 214830DA CH 214830 A CH214830 A CH 214830A
Authority
CH
Switzerland
Prior art keywords
red
azo dye
dye
preparation
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 CH214830A publication Critical patent/CH214830A/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
    • C09B29/24—Monoazo dyes prepared by diazotising and coupling from coupling components containing both hydroxyl and amino directing groups
    • C09B29/28—Amino naphthols
    • C09B29/30—Amino naphtholsulfonic acid

Landscapes

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

Description

  

  Verfahren zur Herstellung eines     Äzofarbstoffes.       Vorliegende Erfindung betrifft ein Ver  fahren zur Herstellung eines     Azofarbstoffes.     Das Verfahren besteht darin, dass man     5-[4'-          (4"-Aminophenyl)-benzoylaminol        -2-ogyben-          zolcarbonsäure        diazotiert    und mit     2-(4'-Amino-          3'-methylbenzoyl-amino)-    5     -ogynaphthalin-7-          sulfonsäure    kuppelt.  



  Der neue Farbstoff stellt ein rotbraunes  Pulver dar, das sich in Wasser mit roter  Farbe löst. Er färbt Baumwolle in klaren  roten Tönen, die sich durch eine sehr gute  Wasserechtheit auszeichnen.  



  <I>Beispiel:</I>  43,9     Teile        5-[4'-(4"-Aminophenyl)-ben-          zoylamino]-2-ogybenzolcarbonsäure    werden  nach dem     Anschlämmen        in    Wasser mit 7 Tei  len     Natriumnitrit    und 28 Teilen Salz  säure 19,5       B6    bei Raumtemperatur     di-          azotiert,    was nach etwa 2     Stunden        beendet     ist.

   Die     Diazotierung    lässt man zu einer neu  tralen mit 35 Teilen     Natriumbicarbonat    ver  setzten Lösung von 37 Teilen 2-(4'-Amino-3'-         methylbenzoyl-amino)-5-ogynaphthalin-7-sul-          fonsäure    laufen. Zur Isolierung wird auf<B>70'</B>  geheizt und mit Salzsäure kongosauer gestellt,  abgesaugt und getrocknet. Der Farbstoff  stellt ein rotbraunes Pulver dar, das sieh in  Wasser mit roter Farbe löst. Er färbt Baum  wolle in klaren roten Tönen, die sich durch  eine sehr gute Wasserechtheit auszeichnen  und deren Wäsche sich durch Nachbehand  lung mit Formaldehyd noch verbessern lässt.  



  Selbstverständlich kann man den Farb  stoff auch auf der Faser weiter     diazotieren     und mit den üblichen     Entwicklern    behandeln,  wobei zum Beispiel mit     2-Ogynaphthalin    ein  sehr klares, gut     ätzbares    Rot -erhalten wird.  In gleicher Weise lässt sich der Farbstoff  auch in Substanz     diazotieren    und mit den üb  lichen     Kupplungskomponenten    vereinigen.



  Process for the preparation of an azo dye. The present invention relates to a method for producing an azo dye. The process consists in that 5- [4'- (4 "-aminophenyl) -benzoylaminol -2-ogyben- zolcarboxylic acid is diazotized and treated with 2- (4'-amino-3'-methylbenzoyl-amino) -5 -ogynaphthalene- 7-sulfonic acid couples.



  The new dye is a red-brown powder that dissolves in water with a red color. It dyes cotton in clear red tones, which are characterized by very good waterfastness.



  <I> Example: </I> 43.9 parts of 5- [4 '- (4 "-aminophenyl) -ben- zoylamino] -2-ogybenzenecarboxylic acid are mixed with 7 parts of sodium nitrite and 28 parts of hydrochloric acid after slurrying in water 19.5 B6 diazotized at room temperature, which ends after about 2 hours.

   The diazotization is allowed to run to a neutral solution of 37 parts of 2- (4'-amino-3'-methylbenzoyl-amino) -5-ogynaphthalene-7-sulphonic acid, which has been mixed with 35 parts of sodium bicarbonate. To isolate it, it is heated to <B> 70 '</B> and acidified to Congo with hydrochloric acid, suction filtered and dried. The dye is a red-brown powder that dissolves in water with a red color. It dyes cotton in clear red tones, which are characterized by very good waterfastness and whose washing can be improved even further by post-treatment with formaldehyde.



  Of course, the dye can also be diazotized further on the fiber and treated with the usual developers, for example with 2-ogynaphthalene a very clear, easily etchable red is obtained. In the same way, the dye can also be diazotized in substance and combined with the usual coupling components.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azo- farbstoffes, darin bestehend, dass man 5-[4'- (4"-Aminophenyl)-benzoylaminol-2-oxyben- zolcarbonsäure diazotiert und mit 2-(4'- Amino- 3'-methyl-benzoylamino) - 5 - oxynaph- thalin-7-sulfonsäure kuppelt. Der neue Farbstoff stellt ein rotbraunes Pulver dar, das sich in Wasser mit roter Farbe löst. Claim: A process for the production of an azo dye, consisting in that 5- [4'- (4 "-aminophenyl) -benzoylaminol-2-oxybenzenecarboxylic acid is diazotized with 2- (4'-amino-3'-methyl -benzoylamino) - 5 - oxynaphthalene-7-sulfonic acid. The new dye is a red-brown powder that dissolves in water with a red color. Er färbt Baumwolle in klaren roten Tönen, die sich durch eine sehr gute Wasserechtheit auszeichnen. It dyes cotton in clear red tones, which are characterized by very good waterfastness.
CH214830D 1938-09-01 1939-08-15 Process for the preparation of an azo dye. CH214830A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE214830X 1938-09-01
CH213060T 1939-08-15

Publications (1)

Publication Number Publication Date
CH214830A true CH214830A (en) 1941-05-15

Family

ID=25725358

Family Applications (1)

Application Number Title Priority Date Filing Date
CH214830D CH214830A (en) 1938-09-01 1939-08-15 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH214830A (en)

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