[go: up one dir, main page]

CH195234A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH195234A
CH195234A CH195234DA CH195234A CH 195234 A CH195234 A CH 195234A CH 195234D A CH195234D A CH 195234DA CH 195234 A CH195234 A CH 195234A
Authority
CH
Switzerland
Prior art keywords
preparation
azo dye
blue
pure
dye
Prior art date
Application number
Other languages
German (de)
Inventor
A-G J R Geigy
Original Assignee
Geigy Ag J R
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 Geigy Ag J R filed Critical Geigy Ag J R
Publication of CH195234A publication Critical patent/CH195234A/en

Links

Landscapes

  • Coloring (AREA)

Description

  

  Verfahren zur Darstellung eines     Azofarbstoffes.       Es wurde gefunden,     dass    man durch Kup  peln von     @diazotiertem        6-Chlor-2,4-dinitrani-          lin    mit     3-Äthyl-ss,y@dioxypropylaminoacet-          anilid    einen schwerlöslichere     Azofarbstoff    er  hält, der sehr     wertvolle    Eigenschaften besitzt.

    Er stellt     ein        dunkelgrünes,    messingglänzen  des Pulver dar, das sich in Alkohol leicht  mit     blauroter    Farbe löst und Lacke oder     Zel-          luloseester        in,    lichtechten     reinen    blauvioletten  Tönen anfärbt. Die Textilfärbungen sind rein  weiss     ätzbar.     



       Beispiel:     2.17,5     Gewichtsteile        6-Chlor-2,4-,dinitrani-          lin    werden in     bekannter    Weise mit einer       Nitrosylschwefelsäure        entsprechend    69 Ge  wichtsteile Nitrit     d        iazotiert    und kalt mit der  dreifachen Menge Eisessig verdünnt.

   Diese       Lösung        wird    in     dünnem    Strahl unter gutem       Rühren.    zu einer     eiskalten    salzsauren Lösung  von 250 Gewichtsteilen     .3-Äthyl-ss,y-dioxy-          propylaminoacetanilid    zulaufen gelassen.

   Die       Farbstoffbildung    kann beschleunigt werden  durch     Abstumpfen    der stark     mineralsauren            Reaktion.    Nach Verschwinden der kongo  sauren Reaktion fällt der Farbstoff als  schwarzer Niederschlag     aus,    der in     bekannter     Weise     isoliert    und     .getrocknet    wird.

   Er stellt  ein     dunkelgrünes,        messingglänzendes    Pulver  dar,     .das    sich     in    Alkohol leicht mit blauroter  Farbe löst und Lacke oder     Zelluloseester    in       lichtechten:        reinen        blauvioletten    Tönen an  färbt. Die     Textilfärbungen    sind rein weiss       ätzbar.  



  Process for the preparation of an azo dye. It has been found that coupling of @diazotized 6-chloro-2,4-dinitraniline with 3-ethyl-ss, y @ dioxypropylaminoacetanilide gives a sparingly soluble azo dye which has very valuable properties.

    It represents a dark green, brassy shine of the powder, which easily dissolves in alcohol with a blue-red color and stains paints or cellulose esters in lightfast, pure blue-violet tones. The textile dyeings can be etched in pure white.



       Example: 2.17.5 parts by weight of 6-chloro-2,4-, dinitranilin are diazotized in a known manner with nitrosylsulfuric acid corresponding to 69 parts by weight of nitrite and diluted cold with three times the amount of glacial acetic acid.

   This solution is poured into a thin stream with good stirring. to an ice-cold hydrochloric acid solution of 250 parts by weight .3-ethyl-ss, y-dioxy-propylaminoacetanilide allowed to run.

   Color formation can be accelerated by blunting the strongly mineral acidic reaction. After the Congo acidic reaction has disappeared, the dye precipitates as a black precipitate, which is isolated and dried in a known manner.

   It is a dark green, shiny brass powder that easily dissolves in alcohol with a blue-red color and colors paints or cellulose esters in lightfast: pure blue-violet tones. The textile dyeings can be etched in pure white.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Azofarb- stoffes., dadurch gekennzeichnet, dass, man diazotiertes 6-Chlor-2,4-,dinitraniliu mit 3- 3thyl-ss,y-@dioxypropylaminoacetanilid kup pelt. PATENT CLAIM: Process for the preparation of an azo dye., Characterized in that diazotized 6-chloro-2,4-, dinitraniliu with 3- 3thyl-ss, y- @ dioxypropylaminoacetanilide kup. Der neue Farbstoff stellt ein dunkel grünes, messingglänzendes Pulver dar, das sich in Alkohol leicht mit blauroter Farbe löst und Lacke oder Zellulos.eester in licht echten reinen blauvioletten Tönen anfärbt. Die Textilfärbungen sind rein weiss ätzbar. The new dye is a dark green, shiny brass powder that easily dissolves in alcohol with a blue-red color and stains paints or cellulose ester in light-genuine, pure blue-violet tones. The textile dyeings can be etched in pure white.
CH195234D 1935-08-27 1936-08-13 Process for the preparation of an azo dye. CH195234A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB195234X 1935-08-27
CH192853T 1936-08-13

Publications (1)

Publication Number Publication Date
CH195234A true CH195234A (en) 1938-01-15

Family

ID=25722342

Family Applications (1)

Application Number Title Priority Date Filing Date
CH195234D CH195234A (en) 1935-08-27 1936-08-13 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH195234A (en)

Similar Documents

Publication Publication Date Title
CH195234A (en) Process for the preparation of an azo dye.
CH195236A (en) Process for the preparation of an azo dye.
CH195228A (en) Process for the preparation of an azo dye.
CH195226A (en) Process for the preparation of an azo dye.
CH195231A (en) Process for the preparation of an azo dye.
CH195852A (en) Process for the preparation of an azo dye.
CH193928A (en) Process for the preparation of an azo dye.
DE590321C (en) Process for the production of metal-containing azo dyes
CH192853A (en) Process for the preparation of an azo dye.
CH195230A (en) Process for the preparation of an azo dye.
CH195229A (en) Process for the preparation of an azo dye.
CH195238A (en) Process for the preparation of an azo dye.
CH195235A (en) Process for the preparation of an azo dye.
CH195232A (en) Process for the preparation of an azo dye.
CH195227A (en) Process for the preparation of an azo dye.
CH195233A (en) Process for the preparation of an azo dye.
CH195225A (en) Process for the preparation of an azo dye.
CH195237A (en) Process for the preparation of an azo dye.
CH169948A (en) Process for the preparation of an azo dye.
CH167034A (en) Process for the production of a new azo dye.
CH170913A (en) Process for the preparation of an azo dye.
CH299203A (en) Process for the preparation of a monoazo dye.
CH169946A (en) Process for the preparation of an azo dye.
CH209099A (en) Process for the preparation of an azo dye.
CH194091A (en) Process for the preparation of an azo dye.