CH209523A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH209523A
CH209523A CH209523DA CH209523A CH 209523 A CH209523 A CH 209523A CH 209523D A CH209523D A CH 209523DA CH 209523 A CH209523 A CH 209523A
Authority
CH
Switzerland
Prior art keywords
dye
azo dye
sulfonic acid
good
preparation
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 CH209523A publication Critical patent/CH209523A/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     fferstellung    eines     Azofarbstoffes.       Vorliegendes Patent bezieht sich auf ein  Verfahren zur Herstellung eines     Azofarb-          stoffes,    dadurch gekennzeichnet,     dass        diazo-          tierte        1-Aminobenzol-3-äthylsulfon-6-sulfon-          säure    mit     1-Benzoylamino-5-oxyiiaphtbalin-7-          sulfonsäure    gekuppelt wird.  



  Der so erhaltene Farbstoff ist ein wasser  lösliches ziegelrotes Pulver     Und    färbt Wolle  und Seide in orangen Tönen von sehr guter  Licht- und     Seewasserechtheit    sowie guter  Wasch- und Schweissechtheit. Der Farbstoff  besitzt ferner ein gutes     Egalisiervermögen.     <I>Beispiel:</I>  <B>26,5</B> Teile     1-Aminobenzol-3-äthylsulfon-          6-sulforisäure    werden in Wasser unter Zu  satz von Natriumkarbonat gelöst. Nach Zu  gabe der nötigen Menge     Natriumnitrit        lässt     man die Lösung in eine Mischung von Eis  und überschüssiger Salzsäure einlaufen.

   Die  Suspension der so erhaltenen     DiazoverbindUDg     wird unter Kühlung zu einer mit überschüs-         sigem    Natriumkarbonat versetzten Lösung  von<B>36</B> Teilen     1-Benzoylamiiio-5-oxynaphtha-          lin-7-sulfonsäure    gegeben. Nach beendeter       Kuppelung    wird der gebildete Farbstoff ab  geschieden 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 diazo-tated 1-aminobenzene-3-ethylsulfonic-6-sulfonic acid is coupled with 1-benzoylamino-5-oxyiiaphthalene-7-sulfonic acid.



  The dye obtained in this way is a water-soluble brick-red powder and dyes wool and silk in orange shades of very good light and sea water fastness and good fastness to washing and perspiration. The dye also has good leveling power. <I> Example: </I> <B> 26.5 </B> parts of 1-aminobenzene-3-ethylsulfonic-6-sulforic acid are dissolved in water with the addition of sodium carbonate. After adding the necessary amount of sodium nitrite, the solution is allowed to run into a mixture of ice and excess hydrochloric acid.

   The suspension of the diazo compound obtained in this way is added, with cooling, to a solution of 36 parts of 1-benzoylamino-5-oxynaphthalin-7-sulfonic acid to which excess sodium carbonate has been added. After coupling is complete, the dye formed is separated off and dried.

Claims (1)

PATENTANSPRUCIEI: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass diazo- tierte 1-Aminobenzol-3-äthylsulfon-6-sulfon- säure mit 1-Benzoylamino-5-oxynaphthalin- 7-sulfonsäure gekuppelt wird. PATENT CLAIM: Process for the production of an azo dye, characterized in that diazo-tated 1-aminobenzene-3-ethylsulfonic-6-sulfonic acid is coupled with 1-benzoylamino-5-oxynaphthalene-7-sulfonic acid. Der so erhalteneFarbstoff isteinwasser- lösliches ziegelrotes Pulver und färbt Wolle und Seide in orangen Tönen von sehr guter Licht- und Seewasserechtheit sowie guter Wasch- und Schweissechtheit. Der Farbstoff besitzt ferner ein gutes Egalisiervermögen. The dye obtained in this way is a water-soluble brick-red powder and dyes wool and silk in orange shades with very good light and sea water fastness and good fastness to washing and perspiration. The dye also has good leveling power.
CH209523D 1937-05-18 1938-05-05 Process for the preparation of an azo dye. CH209523A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE209523X 1937-05-18
CH204850T 1938-05-05

Publications (1)

Publication Number Publication Date
CH209523A true CH209523A (en) 1940-04-15

Family

ID=25724088

Family Applications (1)

Application Number Title Priority Date Filing Date
CH209523D CH209523A (en) 1937-05-18 1938-05-05 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH209523A (en)

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