CH182277A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH182277A
CH182277A CH182277DA CH182277A CH 182277 A CH182277 A CH 182277A CH 182277D A CH182277D A CH 182277DA CH 182277 A CH182277 A CH 182277A
Authority
CH
Switzerland
Prior art keywords
preparation
blue
violet
dye
azo dye
Prior art date
Application number
Other languages
German (de)
Inventor
Sandoz Chemische Fabri Vormals
Original Assignee
Chem Fab Vormals Sandoz
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 Chem Fab Vormals Sandoz filed Critical Chem Fab Vormals Sandoz
Publication of CH182277A publication Critical patent/CH182277A/en

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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
    • 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)

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

Description

  

  Zusatzpatent zum Hauptpatent     Nr.   <B>177581.</B>    Verfahren zur Darstellung eines     Azofarbstoffes.       Das vorliegende Verfahren betrifft die  Darstellung eines blauvioletten     Acetat-          seidenfarbstoffes    und ist dadurch gekenn  zeichnet,     dass    man     diazotiertes        3,6-Dichlor-          2,4-dinitranilin    mit     Athyl-ss,y-dioxypropyl-          metatoluidin    kuppelt.  



  <I>Beispiel:</I>  Man löst     25,'2)#    Teile     3,6-Dielilor-2,4-          dinitranilin    in<B>125</B> Teilen     Schwefelsäure-          monohydrat    von<B>50 1</B> und versetzt die Lö  sung langsam mit<B>6,9</B> Teilen scharf getrock  netem Nitrit zwischen<B>50</B> bis<B>60</B>     '.    Nach  kurzer Zeit wird die     Diazolösung    auf<B>30 '</B>  abgekühlt und unverdünnt allmählich in eine  eiskalt gehaltene Lösung von<B>20,9</B> Teilen       Äthyl-ss,y-dioxypr,opyl-metatoluidin    in<B>500</B>  Teilen Wasser und<B>13</B> Teilen     305o'iger    Salz  säure einlaufen gelassen;

   durch gleichzeitige  Zugabe von Natronlauge sorgt man dafür,       dass    das Kupplungsgut immer nur schwach  mineralsauer bleibt. Der filtrierte und ge-    trocknete Farbstoff wird aus wenig Alkohol  umkristallisiert und stellt ein schwarzbrau  nes Pulver dar; er löst sich in Alkohol und  Aceton mit blauvioletter Farbe, in Benzol  mit     earmoisinroter        und    in konzentrierter  Schwefelsäure mit     oranger    Farbe; er färbt       Acetatseide        inblauvioletten    Tönen an.



  Additional patent to main patent no. <B> 177581. </B> Process for the preparation of an azo dye. The present process relates to the preparation of a blue-violet acetate silk dye and is characterized in that diazotized 3,6-dichloro-2,4-dinitraniline is coupled with ethyl-ss, γ-dioxypropyl-metatoluidine.



  <I> Example: </I> 25, '2) # parts 3,6-dielilor-2,4-dinitraniline are dissolved in <B> 125 </B> parts of sulfuric acid monohydrate of <B> 50 1 </ B> and slowly add <B> 6.9 </B> parts of sharply dried nitrite between <B> 50 </B> to <B> 60 </B> 'to the solution. After a short time, the diazo solution is cooled to <B> 30 '</B> and gradually poured undiluted into an ice-cold solution of <B> 20.9 </B> parts of ethyl-ss, y-dioxypr, opyl-metatoluidine in <B> B> 500 parts water and 13 parts 3050 hydrochloric acid allowed to run in;

   by adding caustic soda at the same time, you ensure that the coupling material always remains only slightly minerally acidic. The filtered and dried dye is recrystallized from a little alcohol and is a black-brown powder; it dissolves in alcohol and acetone with a blue-violet color, in benzene with earmoisin red, and in concentrated sulfuric acid with an orange color; he stains acetate silk in blue-violet tones.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines blau violetten Acetatseidenfarbstoffes, dadurch gekennzeichnet, dass man diazotiertes 3,6- Dichlor-2,4-dinitranilin mit Athyl-ss,y-dioxy- propyl-metatoluidin kuppelt. Der Farbstoff stellt ein schwarzbraunes Pulver dar, löst sich in Alkohol und Aceton mit blauvioletter, in Benzol mit earmoisin- roter und in konzentrierter Schwefelsäure mit oranger Farbe. Er färbt Acetatseide in blauvioletten Tönen an. PATENT CLAIM: Process for the preparation of a blue-violet acetate silk dye, characterized in that diazotized 3,6-dichloro-2,4-dinitraniline is coupled with ethyl-ss, y-dioxy-propyl-metatoluidine. The dye is a black-brown powder, dissolves in alcohol and acetone with blue-violet, in benzene with earmoisin-red and in concentrated sulfuric acid with orange. He dyes acetate silk in blue-violet tones.
CH182277D 1934-07-18 1934-07-18 Process for the preparation of an azo dye. CH182277A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH177581T 1934-07-18
CH182277T 1934-07-18

Publications (1)

Publication Number Publication Date
CH182277A true CH182277A (en) 1936-01-31

Family

ID=25719997

Family Applications (1)

Application Number Title Priority Date Filing Date
CH182277D CH182277A (en) 1934-07-18 1934-07-18 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH182277A (en)

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