CH209524A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH209524A
CH209524A CH209524DA CH209524A CH 209524 A CH209524 A CH 209524A CH 209524D A CH209524D A CH 209524DA CH 209524 A CH209524 A CH 209524A
Authority
CH
Switzerland
Prior art keywords
azo dye
preparation
sulfonic acid
dye
oxynaphthalene
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH209524A publication Critical patent/CH209524A/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 Herstellung eines     Azofarbstoifes.       Vorliegendes Patent bezieht sich auf ein  Verfahren zur Herstellung eines     Azofarb-          stoffes,    dadurch gekennzeichnet, dass man  dianotierte     1-Aminobenzol-3-äthylsulfon-6-          sulfonsäure    mit     2-Amino-8-oxynaphthalin-6-          sulfonsäure    kuppelt.  



  Der so erhaltene     Farbstoff    ist ein was  serlösliches     violettbraunes    Pulver; er besitzt  ein gutes     Egalisiervermögen    und färbt Wolle  und Seide in klaren roten Tönen von her  vorragender Lichtechtheit.  



       Beispiel:     26,5 Teile     1-Aminobenzol-3-äthylsulfon-          6-sulfonsäure    werden dianotiert. Die Suspen  sion der erhaltenen     Diazoverbindung    ver  einigt man in schwach mineralsaurer Lösung  mit 24 Teilen 2-Amino-8-oxynaphthalin-6-         sulfonsäure    und rührt die Mischung einige  Stunden lang. Der gebildete     Farbstoff    wird  dann abgeschieden und getrocknet.



  Process for the production of an azo dye. The present patent relates to a process for the production of an azo dye, characterized in that dianotated 1-aminobenzene-3-ethylsulfonic-6-sulfonic acid is coupled with 2-amino-8-oxynaphthalene-6-sulfonic acid.



  The dye thus obtained is a water-soluble violet-brown powder; it has good leveling properties and dyes wool and silk in clear red tones with excellent lightfastness.



       Example: 26.5 parts of 1-aminobenzene-3-ethylsulfonic-6-sulfonic acid are dianotized. The suspension of the diazo compound obtained is combined in a weak mineral acid solution with 24 parts of 2-amino-8-oxynaphthalene-6-sulfonic acid and the mixture is stirred for a few hours. The dye formed is then deposited and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azöfarb- stoffes, dadurch gekennzeichnet, dass man dianotierte 1-Aminobenzol-3-äthylsulfon-6- sulfonsäure mit 2-Amino-8-oxynaphthalin- 6-sulfonsäure kuppelt.. Der so erhaltene Farbstoff ist ein was serlösliches, violettbraunes Pulver; er besitzt ein gutes Egalisiervermögen und färbt Wolle und Seide in klaren roten Tönen von her vorragender Lichtechtheit. PATENT CLAIM: Process for the production of an azo dye, characterized in that dianotated 1-aminobenzene-3-ethylsulfone-6-sulfonic acid is coupled with 2-amino-8-oxynaphthalene-6-sulfonic acid .. The dye thus obtained is water-soluble , purple-brown powder; it has good leveling properties and dyes wool and silk in clear red tones with excellent lightfastness.
CH209524D 1937-05-18 1938-05-05 Process for the preparation of an azo dye. CH209524A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE209524X 1937-05-18
CH204850T 1938-05-05

Publications (1)

Publication Number Publication Date
CH209524A true CH209524A (en) 1940-04-15

Family

ID=25724089

Family Applications (1)

Application Number Title Priority Date Filing Date
CH209524D CH209524A (en) 1937-05-18 1938-05-05 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH209524A (en)

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