CH169951A - 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
CH169951A
CH169951A CH169951DA CH169951A CH 169951 A CH169951 A CH 169951A CH 169951D A CH169951D A CH 169951DA CH 169951 A CH169951 A CH 169951A
Authority
CH
Switzerland
Prior art keywords
preparation
green
chromable
blue
monoazo 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 CH169951A publication Critical patent/CH169951A/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

Landscapes

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

Description

  

  Verfahren zur Darstellung eines     ehromierbaren    grünen     1VlonoazofarbstofPes.       Das vorliegende Verfahren betrifft die  Darstellung eines     chromierbaren    grünen Mono  azofarbstoffes und ist dadurch gekennzeichnet,  dass man dianotiertes     6-Nitro-4-chlor-2-amino-          phenol    mit     1-Phenylamino-8-naphtol-4,6-di-          sulfonsäure    kuppelt.

      <I>Beispiel:</I>    18,85 kg     6-Nitro-4-chlor-2-aminophenol     werden in 500 Liter Wasser und der nötigen  Menge Natronlauge gelöst, mit 6,9 kg Nitrit  versetzt und durch     Einlaufenlassen    in 90 Liter  10     o/oige    Salzsäure bei 5   dianotiert. Die       Diazoverbindung    wird alkalisch, essigsauer  oder neutral mit 39,5 kg     1-Phenylamino-8-          naphtol-4,6-disulfonsäure    vereinigt. Nach Be  endigung der Kupplung wird erwärmt, mit  Salz gefällt, filtriert und getrocknet.  



  Der fertige Farbstoff, ein dunkles Pulver,  löst sich in Wasser mit blauer, in verdünnter  Natronlauge mit graublauer, in konzentrierter    Schwefelsäure mit roter, in Alkohol mit     röt-          licbblauer    Farbe. Er färbt auf Wolle in       nachchromierter    Färbung ein Grün von guten  Eigenschaften.



  Process for the preparation of an honorable green 1Vlonoazo dye. The present process relates to the preparation of a chromable green mono azo dye and is characterized in that dianotated 6-nitro-4-chloro-2-aminophenol is coupled with 1-phenylamino-8-naphthol-4,6-disulfonic acid.

      <I> Example: </I> 18.85 kg of 6-nitro-4-chloro-2-aminophenol are dissolved in 500 liters of water and the necessary amount of sodium hydroxide solution, 6.9 kg of nitrite are added and 10 o / o hydrochloric acid dianotized at 5. The diazo compound is combined with 39.5 kg of 1-phenylamino-8-naphthol-4,6-disulfonic acid in an alkaline, acidic or neutral form. 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 blue, in dilute sodium hydroxide solution with gray-blue, in concentrated sulfuric acid with red, in alcohol with reddish-blue color. In post-chromed dyeing, it dyes a green with good properties on wool.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines chro- mierbaren grünen Monoazofarbstoffes, dadurch gekennzeichnet, dass man dianotiertes 6-Nitro- 4-chlor-2-aminophenol mit 1-Phenylamino-8- naphtol-4,6-disulfonsäure kuppelt. Der Farbstoff stellt ein dunkles Pulver dar. Er löst sich in Wasser mit blauer, in verdünnter Natronlauge mit graublauer, in konzentrierter Schwefelsäure mit roter, in Alkohol mit rötlichblauer Farbe. Er färbt auf Wolle in nachchromierter Färbung ein Grün von guten Eigenschaften. Claim: Process for the preparation of a chromable green monoazo dye, characterized in that dianotated 6-nitro-4-chloro-2-aminophenol is coupled with 1-phenylamino-8-naphthol-4,6-disulfonic acid. The dye is a dark powder. It dissolves in water with blue, in dilute sodium hydroxide solution with gray-blue, in concentrated sulfuric acid with red, in alcohol with reddish-blue color. In post-chromed dyeing, it dyes a green with good properties on wool.
CH169951D 1933-03-07 1933-03-07 Process for the preparation of a chromable green monoazo dye. CH169951A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH166222T 1933-03-07
CH169951T 1933-03-07

Publications (1)

Publication Number Publication Date
CH169951A true CH169951A (en) 1934-06-15

Family

ID=25718251

Family Applications (1)

Application Number Title Priority Date Filing Date
CH169951D CH169951A (en) 1933-03-07 1933-03-07 Process for the preparation of a chromable green monoazo dye.

Country Status (1)

Country Link
CH (1) CH169951A (en)

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