CH182268A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH182268A
CH182268A CH182268DA CH182268A CH 182268 A CH182268 A CH 182268A CH 182268D A CH182268D A CH 182268DA CH 182268 A CH182268 A CH 182268A
Authority
CH
Switzerland
Prior art keywords
preparation
violet
dye
azo dye
parts
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 CH182268A publication Critical patent/CH182268A/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
    • 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
    • C09B29/095—Amino naphthalenes

Landscapes

  • 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 violetten     Acetatseiderifarb-          stoffes    und ist dadurch gekennzeichnet, dass  man     diazotiertes        6-Brom-2,4-dinitroanilin    mit       ss,y-Dioxypropyl-2-naphtylamin    kuppelt.

      <I>Beispiel:</I>    Man löst 26,2 Teile     6-Brom-2,4-.dinitro-          anilin    in 135 Teilen     konzentrierter    Schwefel  säure von 60   und versetzt die Lösung lang  sam mit 6,9 Teilen scharf getrocknetem  Nitrit zwischen 60 bis<B>70'.</B> Nach einiger       Zeit    kühlt man ab auf 20  , giesst die Masse  auf zerstossenes Eis und verdünnt mit Eis  wasser bis auf 1500 Teile. Die     Diazolösung     wird in eine eiskalte Lösung von     2:1,7    Teilen       ss,y-I)ioxypropyl-2-naphtylamin    in 500 Tei  len Wasser und 13 Teilen 30%iger Salz  säure einlaufen gelassen. Die Kupplung ist  nach kurzer     Zeit    beendet.

   Der ausgeschie  dene Farbstoff färbt nach geeigneter Disper-         gierung        Aoetatseide    aus dem Seifenbade in  violett-blauen Tönen an. Er stellt ein  schwarzbraunes Pulver dar, welches sich in  organischen Lösungsmitteln mit rotvioletter  und in konzentrierter Schwefelsäure mit  oranger Farbe löst.



      Additional patent to main patent no. <B> 177581. </B> Process for the preparation of an azo dye. The present method relates to the preparation of a violet silk acetate dye and is characterized in that diazotized 6-bromo-2,4-dinitroaniline is coupled with ß, γ-dioxypropyl-2-naphthylamine.

      <I> Example: </I> 26.2 parts of 6-bromo-2,4-dinitroaniline are dissolved in 135 parts of concentrated sulfuric acid of 60 and the solution is slowly mixed with 6.9 parts of sharply dried nitrite 60 to <B> 70 '. </B> After a while, cool down to 20, pour the mass onto crushed ice and dilute to 1500 parts with ice water. The diazo solution is allowed to run into an ice-cold solution of 2: 1.7 parts of ss, y-I) ioxypropyl-2-naphthylamine in 500 parts of water and 13 parts of 30% hydrochloric acid. The coupling ends after a short time.

   After suitable dispersion, the excreted dye stains the acetate silk from the soap bath in violet-blue tones. It is a black-brown powder which dissolves in organic solvents with red-violet color and in concentrated sulfuric acid with orange color.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines violetten Acetatseidenfarbstoffes, dadurch gekenn zeichnet, dass man diazotiertes 6-Brom-2,4- dinitroanilin mit ss,y-Dioxypropyl-2-naph- tylamin kuppelt. Der Farbstoff stellt ein schwarzbraunes Pulver dar, welches sich in organischen Lö sungsmitteln mit rot-violetter und in konzen trierter Schwefelsäure mit oranger Farbe löst. Er färbt nach geeigneter Dispergierung Acetatseide aus dem Seifenbade in violett blauen Tönen an. PATENT CLAIM: Process for the preparation of a violet acetate silk dye, characterized in that diazotized 6-bromo-2,4-dinitroaniline is coupled with ss, γ-dioxypropyl-2-naphthylamine. The dye is a black-brown powder, which dissolves in organic solvents with red-violet and in concentrated sulfuric acid with an orange color. After suitable dispersion, it stains acetate silk from the soap bath in violet-blue tones.
CH182268D 1934-07-18 1934-07-18 Process for the preparation of an azo dye. CH182268A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH177581T 1934-07-18
CH182268T 1934-07-18

Publications (1)

Publication Number Publication Date
CH182268A true CH182268A (en) 1936-01-31

Family

ID=25719988

Family Applications (1)

Application Number Title Priority Date Filing Date
CH182268D CH182268A (en) 1934-07-18 1934-07-18 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH182268A (en)

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