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CH184778A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH184778A
CH184778A CH184778DA CH184778A CH 184778 A CH184778 A CH 184778A CH 184778D A CH184778D A CH 184778DA CH 184778 A CH184778 A CH 184778A
Authority
CH
Switzerland
Prior art keywords
preparation
azo dye
dye
violet
dinitraniline
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 CH184778A publication Critical patent/CH184778A/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
    • C09B29/06—Monoazo dyes prepared by diazotising and coupling from coupling components containing amino as the only directing group
    • C09B29/08—Amino benzenes
    • C09B29/0805—Amino benzenes free of acid groups
    • C09B29/0807—Amino benzenes free of acid groups characterised by the amino group
    • C09B29/0809—Amino benzenes free of acid groups characterised by the amino group substituted amino group
    • C09B29/0811—Amino benzenes free of acid groups characterised by the amino group substituted amino group further substituted alkylamino, alkenylamino, alkynylamino, cycloalkylamino aralkylamino or arylamino
    • C09B29/0813—Amino benzenes free of acid groups characterised by the amino group substituted amino group further substituted alkylamino, alkenylamino, alkynylamino, cycloalkylamino aralkylamino or arylamino substituted by OH, O-C(=X)-R, O-C(=X)-X-R, O-R (X being O,S,NR; R being hydrocarbonyl)
    • 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
    • C09B29/06—Monoazo dyes prepared by diazotising and coupling from coupling components containing amino as the only directing group
    • C09B29/08—Amino benzenes

Landscapes

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

Description

  

  <B>Zusatzpatent</B> zum Hauptpatent Nr. 182400.    Verfahren zur Darstellung eines     Azofarbstoffes.       Es wurde     gefunden,    dass     man    durch     Di-          azotierung    und Kupplung von     5-Chlor-2.4-          dinitranilin    mit     Amyl-ss,y-dioxypropyl-m-          toluidin    einen     schwerlöslichen        Azofarbstoff     erhält, der sehr wertvolle Eigenschaften be  sitzt.

   Er färbt Lacke und     Acetatseide    licht  echt     violett;    die gefärbte Faser besitzt sehr       gute    Echtheitseigenschaften und ist rein weiss       ätzbar.     



  <I>Beispiel:</I>  <B>217,5</B> Teile     5-Chlor-2,4-dinitranilin    wer  den mit der berechneten Menge     Nitrosyl-          sehwefelsäure    in konzentriert schwefelsaurer  Lösung     diazotiert,    auf Eis gegossen und die  verdünnte     Diazoniumlösung    mineralsauer ge  kuppelt mit 237 Teilen     Amyl-ss,y-dioxypro-          pyl-m-toluidin.    Nach kurzer Zeit ist die       Farbstoffbildung    beendet, das     Kupplungs=          produkt    wird in üblicher Weise isoliert, neu  tral     gewaschen,        verpastet    oder,

   nach dem    Trocknen bei mässiger     Temperatur,    zu einem  Färbepräparat umgearbeitet. Der Farbstoff,  ein in Wasser unlösliches,     dunkelviolettes     Pulver, löst sieh in Alkohol oder ähnlichen,       organischen        Lösungsmitteln        mit        violetter,        in          konzentrierter    Schwefelsäure mit roter Farbe.



  <B> Additional patent </B> to main patent No. 182400. Process for the preparation of an azo dye. It has been found that by diazotization and coupling of 5-chloro-2,4-dinitraniline with amyl-ss, γ-dioxypropyl-m-toluidine, a sparingly soluble azo dye is obtained which has very valuable properties.

   It colors lacquers and acetate silk light, real violet; the dyed fiber has very good fastness properties and can be etched in pure white.



  <I> Example: </I> <B> 217.5 </B> parts of 5-chloro-2,4-dinitraniline are diazotized with the calculated amount of nitrosylsulfuric acid in concentrated sulfuric acid solution, poured onto ice and the diluted Diazonium solution coupled to mineral acid with 237 parts of amyl-ss, y-dioxypropyl-m-toluidine. After a short time, the dye formation is complete, the coupling product is isolated in the usual way, neutral washed, pasted or,

   after drying at a moderate temperature, worked into a dye preparation. The dye, a dark purple powder that is insoluble in water, dissolves in alcohol or similar organic solvents with purple, in concentrated sulfuric acid with red color.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man 5- Chlor-2. 4-dinitranilin diazotiert und mit Amyl-ss,y-dioxypropyl-m-toluidin kuppelt. Der Farbstoff, ein in Wasser unlösliches, dunkelviolettes Pulver, löst sich in Alkohol oder ähnlichen Lösungsmitteln mit violetter, in konzentrierter Schwefelsäure mit roter Farbe. PATENT CLAIM: Process for the preparation of an azo dye, characterized in that 5-chloro-2. 4-dinitraniline diazotized and coupled with amyl-ss, y-dioxypropyl-m-toluidine. The dye, a dark purple powder that is insoluble in water, dissolves in alcohol or similar solvents with a violet color, in concentrated sulfuric acid with a red color. Er färbt Lacke und Acetatseide licht echt violett; :die gefärbte Faser besitzt sehr gute Echtheitseigenschaften und ist rein weiss ätzbar. It colors lacquers and acetate silk light, real violet; : the dyed fiber has very good fastness properties and can be etched in pure white.
CH184778D 1935-04-01 1935-04-01 Process for the preparation of an azo dye. CH184778A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH184778T 1935-04-01
CH182400T 1935-04-01

Publications (1)

Publication Number Publication Date
CH184778A true CH184778A (en) 1936-06-15

Family

ID=25720712

Family Applications (1)

Application Number Title Priority Date Filing Date
CH184778D CH184778A (en) 1935-04-01 1935-04-01 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH184778A (en)

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