CH169950A - Process for the preparation of a chromable green monoazo dye. - Google Patents

Process for the preparation of a chromable green monoazo dye.

Info

Publication number
CH169950A
CH169950A CH169950DA CH169950A CH 169950 A CH169950 A CH 169950A CH 169950D A CH169950D A CH 169950DA CH 169950 A CH169950 A CH 169950A
Authority
CH
Switzerland
Prior art keywords
preparation
chromable
green
monoazo dye
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 CH169950A publication Critical patent/CH169950A/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
    • C09B29/24—Monoazo dyes prepared by diazotising and coupling from coupling components containing both hydroxyl and amino directing groups
    • C09B29/28—Amino naphthols
    • C09B29/30—Amino naphtholsulfonic acid

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

Description

  

  Zusatzpatent zum Hauptpatent     Nr.   <B>166222.</B>    Verfahren zur Darstellung eines     ebrowierbaren    grünen     Nonoazofarbstoffes.       Das vorliegende Verfahren betrifft die  Darstellung eines     ehromierbaren    grünen     Mono-          azofarbstoffes    und ist dadurch gekennzeichnet,       dass    man     diazotiertes        6-Nitro-4-chlor-2-amino-          phenol    mit     1-(p-Tolyl)amino-8-naphtol-4-sul-          fonsäure    kuppelt.  



  <I>Beispiel:</I>  <B>18,85 kg</B>     6-Nitro-4-chlor-2-aminophenol     werden in<B>500</B> Liter Wasser und der nötigen  Menge Natronlauge gelöst, mit<B>6,9 kg</B> Nitrit  versetzt und durch     Einlaufenlassen    in<B>90</B> Liter       10        %ige        Salzsäure        bei   <B>6 0</B>     diazotiert.        Die          Diazoverbindung    wird alkalisch, essigsauer  oder neutral mit<B>32,9 kg</B>     1-(p-Tolyl)amino-8-          naphtol-4-sulfonsäure    vereinigt. Nach Beendi  gung der Kupplung wird erwärmt, mit Salz  gefällt, filtriert und getrocknet.

   Der fertige  Farbstoff, ein dunkles Pulver, löst sich in  Wasser mit blauer Farbe, die bei Zusatz von  wenig Natronlauge etwas grüner wird, in  konzentrierter Schwefelsäure mit violetter, in    Alkohol mit blauer Farbe. Er färbt Wolle  nach dem Monochrom- oder     Nachchromie-          rungsverfahren    in hervorragend echten grünen  Tönen.



  Additional patent to main patent no. <B> 166222. </B> Process for the preparation of an ebrowable green nonoazo dye. The present process relates to the preparation of an honorable green monoazo dye and is characterized in that diazotized 6-nitro-4-chloro-2-aminophenol is mixed with 1- (p-tolyl) amino-8-naphthol-4-sulph - fonsäure couples.



  <I> Example: </I> <B> 18.85 kg </B> 6-nitro-4-chloro-2-aminophenol are dissolved in <B> 500 </B> liters of water and the required amount of sodium hydroxide solution, mixed with <B> 6.9 kg </B> nitrite and diazotized by running into <B> 90 </B> liters of 10% hydrochloric acid at <B> 6 0 </B>. The diazo compound is combined in an alkaline, acidic or neutral manner with 32.9 kg 1- (p-tolyl) amino-8-naphthol-4-sulfonic acid. After the coupling has ended, the mixture is heated, precipitated with salt, filtered and dried.

   The finished dye, a dark powder, dissolves in water with a blue color, which becomes a little greener with the addition of a little caustic soda, in concentrated sulfuric acid with a violet color, in alcohol with a blue color. He dyes wool using the monochrome or chromium plating process in excellent, genuine green tones.

Claims (1)

<B>PATENTANSPRUCH:</B> Verfahren zur Darstellung eines chromier- baren grünen Monoazofarbstoffes, dadurch gekennzeichnet, dass man diazotiertes 6-Nitro- 4-ohlor-2-aminophenol mit 1-(p-Tolyl)amino- 8-naphtol-4-sulfonsäure kuppelt. Der Farbstoff stellt ein dunkles Pulver dar. Er löst sich in Wasser mit blauer Farbe, die bei Zusatz von wenig Natronlauge etwas grüner wird, in konzentrierter Schwefelsäure mit violetter, in Alkohol mit blauer Farbe. <B> PATENT CLAIM: </B> Process for the preparation of a chromable green monoazo dye, characterized in that diazotized 6-nitro-4-chloro-2-aminophenol is mixed with 1- (p-tolyl) amino-8-naphthol 4-sulfonic acid couples. The dye is a dark powder. It dissolves in water with a blue color, which becomes a little greener with the addition of a little caustic soda, in concentrated sulfuric acid with a violet color, in alcohol with a blue color. Er färbt Wolle nach dem Monochrom- oder Nachehromierungsverfahren in hervorragend echten grünen Tönen. He dyes wool in excellent, genuine green tones using the monochrome or re-toming process.
CH169950D 1933-03-07 1933-03-07 Process for the preparation of a chromable green monoazo dye. CH169950A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH169950T 1933-03-07
CH166222T 1933-03-07

Publications (1)

Publication Number Publication Date
CH169950A true CH169950A (en) 1934-06-15

Family

ID=25718250

Family Applications (1)

Application Number Title Priority Date Filing Date
CH169950D CH169950A (en) 1933-03-07 1933-03-07 Process for the preparation of a chromable green monoazo dye.

Country Status (1)

Country Link
CH (1) CH169950A (en)

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