CH179328A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH179328A
CH179328A CH179328DA CH179328A CH 179328 A CH179328 A CH 179328A CH 179328D A CH179328D A CH 179328DA CH 179328 A CH179328 A CH 179328A
Authority
CH
Switzerland
Prior art keywords
preparation
dye
azo dye
violet
blue
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 CH179328A publication Critical patent/CH179328A/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

  

      Zusatzpatent    zum Hauptpatent Nr. 175355.    Verfahren zur Darstellung eines     Azofarustoifes.       Es wurde gefunden, dass man einen neuen       Azofarbstoff    von wertvollen Eigenschaften  erhält durch Kupplung von     diazotiertem          6-Brom-2.        4-dinitroanilin    mit     3-ss,y-Dioxy-          1)ropylamino-4-methoxy-l-methylbenzol.     



  Der neue Farbstoff ist ein in Wasser un  lösliches dunkles Pulver, das in Aceton mit  blauvioletter und in     konzentrierter    Schwefel  säure mit     scharlachroter    Farbe löslich ist und  nach dem üblichen Verfahren     Aeetatseide    in       #.:chönen    blauvioletten Tönen anfärbt. Die  Färbungen zeigen gute Echtheitseigenschaf  ten und sind rein weiss     ätzbar.    Das neue Pro  dukt ist auch ein     gutes        Färbemittel    für  Lacke.  



  <I>Beispiel:</I>  131 Teile     6-Brom-2        .4-dinitroanilin    wer  den in bekannter Weise mit einer     Nitrosyl-          sehwefelsäure,    entsprechend 35 Teilen Na  triumnitrit,     diazotiert.    Die     Diazoniumlösung     wird filtriert und mit 105,5 Teilen     3-ss,y-          Dioxypropylamino-    4     -methoxy    - l -     methylben-          zol,    gelöst in 500 Teilen Essigsäure     85%ig     und 3000 Teilen Eiswasser, bei 0 bis 5   zur    Kupplung gebracht. Nach einiger Zeit ist die .

         Farbstoffbildung    beendet; man kann sie  durch Abstumpfen der stark sauren Reak  tion beschleunigen. Der ausgeschiedene Farb  stoff wird in     bekannter    Weise aufgearbeitet,       verpastet,    oder, nach dem Trocknen bei mässig  hoher Temperatur, zu einem Färbepräparat  verarbeitet.



      Additional patent to main patent no. 175355. Process for the representation of an Azofarustoifes. It has been found that a new azo dye of valuable properties can be obtained by coupling diazotized 6-bromo-2. 4-dinitroaniline with 3-ss, γ-dioxy-1) ropylamino-4-methoxy-1-methylbenzene.



  The new dye is a dark powder which is insoluble in water and which is soluble in acetone with blue-violet and in concentrated sulfuric acid with a scarlet-red color and dyes acetate silk in beautiful blue-violet tones using the usual method. The dyeings show good fastness properties and can be etched in pure white. The new product is also a good colorant for paints.



  <I> Example: </I> 131 parts of 6-bromo-2,4-dinitroaniline who are diazotized in a known manner with a nitrosylsulfuric acid, corresponding to 35 parts of sodium nitrite. The diazonium solution is filtered and coupled with 105.5 parts of 3-ss, γ-dioxypropylamino-4-methoxy-1-methylbenzene, dissolved in 500 parts of 85% acetic acid and 3000 parts of ice water, at 0-5. After a while the.

         Dye formation ended; it can be accelerated by dulling the strongly acidic reaction. The precipitated dye is worked up in a known manner, pasted or, after drying at a moderately high temperature, processed into a dye preparation.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man diazotiertes 6-Brom-2.4-dinitroanilin mit 3-ss,y-Dioxy propylamino-4-methoxy-l-methyl- benzol kuppelt. Der neue Farbstoff ist ein in Wasser unlösliches dunkles Pulver, das in Aceton mit 'blauvioletter und in konzen trierter Schwefelsäure mit scharlachroter Farbe löslich ist und nach dem üblichen Ver fahren Acetatseide in schönen, blauvioletten Tönen anfärbt. PATENT CLAIM: Process for the preparation of an azo dye, characterized in that diazotized 6-bromo-2,4-dinitroaniline is coupled with 3-ss, γ-dioxypropylamino-4-methoxy-1-methylbenzene. The new dye is a dark powder which is insoluble in water and which is soluble in acetone with 'blue-violet and in concentrated sulfuric acid with a scarlet-red color and dyes acetate silk in beautiful blue-violet tones using the usual method. Die Färbungen zeigen gute Echtheitseigenschaften und sind rein weiss ätzbar. Das neue Produkt ist auch ein gutes Färbemittel für Lacke. The dyeings show good fastness properties and can be etched in pure white. The new product is also a good colorant for paints.
CH179328D 1934-04-07 1934-04-07 Process for the preparation of an azo dye. CH179328A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH179328T 1934-04-07
CH175355T 1934-04-07

Publications (1)

Publication Number Publication Date
CH179328A true CH179328A (en) 1935-08-31

Family

ID=25719674

Family Applications (1)

Application Number Title Priority Date Filing Date
CH179328D CH179328A (en) 1934-04-07 1934-04-07 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH179328A (en)

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