CH205802A - Process for the preparation of a monoazo dye. - Google Patents

Process for the preparation of a monoazo dye.

Info

Publication number
CH205802A
CH205802A CH205802DA CH205802A CH 205802 A CH205802 A CH 205802A CH 205802D A CH205802D A CH 205802DA CH 205802 A CH205802 A CH 205802A
Authority
CH
Switzerland
Prior art keywords
preparation
dye
monoazo dye
acid
amino
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 CH205802A publication Critical patent/CH205802A/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
    • 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
    • C09B29/10—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group
    • C09B29/16—Naphthol-sulfonic acids
    • 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
    • C09B29/34—Monoazo dyes prepared by diazotising and coupling from other coupling components
    • C09B29/36—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds
    • C09B29/3604—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom
    • C09B29/3647—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom containing a five-membered ring with two nitrogen atoms as heteroatoms
    • C09B29/3652—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom containing a five-membered ring with two nitrogen atoms as heteroatoms containing a 1,2-diazoles or hydrogenated 1,2-diazoles
    • C09B29/366—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom containing a five-membered ring with two nitrogen atoms as heteroatoms containing a 1,2-diazoles or hydrogenated 1,2-diazoles containing hydroxy-1,2-diazoles, e.g. pyrazolone

Landscapes

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

Description

  

  Verfahren     zur    Herstellung eines     Honoazofarbstoffes.       Gegenstand des vorliegenden Zusatzpa  tentes ist ein Verfahren zur Herstellung  eines     Monoazofarbstoffes,    dadurch gekenn  zeichnet, dass man     4-Amino-l-phenoloctyläther          diazotiert    und mit     1-Oxynaphthalin-3,6-disul-          fonsäure    kuppelt. Der so erhaltene Farbstoff  färbt Wolle aus saurem Bade in leuchtend       gelbstichig    roten Tönen.

      <I>Beispiel:</I>    31,5 Teile     2-Amino-1-phenoloctyläther-          chlorhydrat    werden mit 40 Teilen konzen  trierter Salzsäure während einer Stunde ver  rührt, mit 50 Teilen Eiswasser versetzt und  bei 5   mit einer konzentrierten     wässrigen     Lösung von 7 Teilen     Natriumnitrit        diazotiert.     Die     Diazoniumverbindung    lässt man zu einer         ammoniakalischen    Lösung von 30,4 Teilen       1-Oxynaphthalin-3,6-disulfonsäure    fliessen. Die  Kupplung ist in kurzer Zeit beendet. Der  Farbstoff wird     abfiltriert,    gepresst und ge  trocknet.

   Er bildet ein braunrotes Pulver,  das sich in Wasser rot,. in konzentrierter  Schwefelsäure violett löst.



  Process for the preparation of a honoazo dye. The subject of the present Zusatzpa tentes is a process for the production of a monoazo dye, characterized in that 4-amino-1-phenol octyl ether is diazotized and coupled with 1-oxynaphthalene-3,6-disulphonic acid. The dye thus obtained dyes wool from an acid bath in bright yellow-tinged red shades.

      <I> Example: </I> 31.5 parts of 2-amino-1-phenoloctyl ether chlorohydrate are stirred with 40 parts of concentrated hydrochloric acid for one hour, mixed with 50 parts of ice water and at 5 with a concentrated aqueous solution of 7 Share sodium nitrite diazotized. The diazonium compound is allowed to flow into an ammoniacal solution of 30.4 parts of 1-oxynaphthalene-3,6-disulfonic acid. The coupling is completed in a short time. The dye is filtered off, pressed and dried.

   It forms a brownish-red powder that turns red in water. dissolves violet in concentrated sulfuric acid.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Monoazo- farbstoffes, dadurch gekennzeichnet, dass man 4-Amino-l-phenoloctyläther diazotiert und mit 1-Ogynaphthalin-3,6-disulfonsäure kup pelt. Der so erhaltene Farbstoff färbt Wolle aus saurem Bade in leuchtend gelbstichig roten Tönen. Claim: Process for the preparation of a monoazo dye, characterized in that 4-amino-1-phenol octyl ether is diazotized and kup pelt with 1-ogynaphthalene-3,6-disulfonic acid. The dye thus obtained dyes wool from an acid bath in bright yellow-tinged red shades.
CH205802D 1937-11-13 1937-11-13 Process for the preparation of a monoazo dye. CH205802A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH205802T 1937-11-13
CH201288T 1937-11-13

Publications (1)

Publication Number Publication Date
CH205802A true CH205802A (en) 1939-06-30

Family

ID=25723697

Family Applications (1)

Application Number Title Priority Date Filing Date
CH205802D CH205802A (en) 1937-11-13 1937-11-13 Process for the preparation of a monoazo dye.

Country Status (1)

Country Link
CH (1) CH205802A (en)

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