CH300451A - Process for the preparation of an acidic monoazo dye. - Google Patents

Process for the preparation of an acidic monoazo dye.

Info

Publication number
CH300451A
CH300451A CH300451DA CH300451A CH 300451 A CH300451 A CH 300451A CH 300451D A CH300451D A CH 300451DA CH 300451 A CH300451 A CH 300451A
Authority
CH
Switzerland
Prior art keywords
monoazo dye
preparation
medium
sulfonic acid
parts
Prior art date
Application number
Other languages
German (de)
Inventor
Ag Sandoz
Original Assignee
Ag 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 Ag Sandoz filed Critical Ag Sandoz
Publication of CH300451A publication Critical patent/CH300451A/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    sauren     Monoazofarbstoffes.       Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Herstellung eines sauren       Monoazofarbstoffes,    welches darin besteht, dass  man 1     Mol    der     Diazoverbindung    aus     1-Amino-          benzol-    2 -     sulfonsäure    mit 1     Mol    1-     Oxy-6-          decanoylaminonaphthalin-3-sulfonsäure    kup  pelt.  



  Im nachfolgenden Beispiel bedeuten die  Teile Gewichtsteile.  



  <I>Beispiel:</I>  17,3 Teile     1-Aminobenzol-    2 -     sulfonsäure     werden in 50 Teilen kaltem Wasser und 100  Teilen     normaler        Natriumhydroxydlösung    ge  löst und mit einer Lösung von 7 Teilen Na  triumnitrit in 50 Teilen Wasser versetzt. Durch  Zugabe von Eis wird die Temperatur auf 5  bis<B>10'</B> gebracht. Man giesst hierauf     unter     Rühren 30 Teile konzentrierte     Salzsäure    auf  einmal zu und rührt bei 10 bis     15'1    bis die  salpetrige Säure     verschwunden    ist. Hierbei  scheidet sich die     Diazoverbindung    zum Teil  aus.

   Die Suspension der     Diazoverbindung    wird  mit der     wässrigen        Suspension    von 41,4 Teilen  des     Natriumsalzes    der 1-     Oxy-    6 -     decanoyl-          aminonaphthalin-3-sulfonsäure    in 1200 Teilen  Wasser in Gegenwart von 20 Teilen     Natrium-          bicarbonat    bei 10 bis<B>15'</B> vereinigt. Nach be  endeter     Kupplung    wird der ausgeschiedene  neue     Farbstoff    filtriert und getrocknet.

      Er ist ein orangefarbenes Pulver, das sich  in     heissem    Wasser mit oranger Farbe löst und  Wolle, Seide und     Polyamidfasern    in lebhaften  orangen Tönen von guter Wasch-     imd    Schweiss  echtheit und sehr guter Lichtechtheit färbt.



  Process for the preparation of an acidic monoazo dye. The present patent relates to a process for the preparation of an acidic monoazo dye, which consists in that 1 mol of the diazo compound from 1-amino-benzene-2-sulfonic acid is coupled with 1 mol of 1-oxy-6-decanoylaminonaphthalene-3-sulfonic acid.



  In the following example, the parts are parts by weight.



  <I> Example: </I> 17.3 parts of 1-aminobenzene-2-sulfonic acid are dissolved in 50 parts of cold water and 100 parts of normal sodium hydroxide solution, and a solution of 7 parts of sodium nitrite in 50 parts of water is added. The temperature is brought to 5 to <B> 10 '</B> by adding ice. 30 parts of concentrated hydrochloric acid are then poured in all at once, with stirring, and the mixture is stirred at 10 to 15 minutes until the nitrous acid has disappeared. The diazo compound is partially eliminated here.

   The suspension of the diazo compound is mixed with the aqueous suspension of 41.4 parts of the sodium salt of 1- oxy- 6 - decanoyl-aminonaphthalene-3-sulfonic acid in 1200 parts of water in the presence of 20 parts of sodium bicarbonate at 10 to 15 ' United. After coupling has ended, the new dye which has separated out is filtered off and dried.

      It is an orange powder that dissolves in hot water with an orange color and dyes wool, silk and polyamide fibers in lively orange tones with good fastness to washing and perspiration and very good fastness to light.

Claims (1)

PATENTAhi SPRUCH Verfahren zur Herstellung eines sauren Monoazofarbstoffes, dadurch gekennzeichnet, dass man 1 Mol der Diazoverbindung aus 1-Aminobenzol-2-sulfonsäure mit 1 Mol 1-Oxy- 6-decanoylaminonaphthalin-3-sulfonsäure kup pelt. PATENTAhi SPRUCH Process for the preparation of an acidic monoazo dye, characterized in that 1 mol of the diazo compound from 1-aminobenzene-2-sulfonic acid is coupled with 1 mol of 1-oxy-6-decanoylaminonaphthalene-3-sulfonic acid. Der neue saure Monoazofarbstoff ist ein orangefarbenes Pulver, das sich in heissem Wasser mit oranger Farbe löst und Wolle, Seide und Polyamidfasern in lebhaften orangen Tönen von guter Wasch- und Schweissechtheit und sehr guter Lichtechtheit färbt. UNTERANSPRÜCHE 1. Verfahren nach Patentanspruch, da durch gekennzeichnet, dass man die Kupplung in schwach alkalischem Medium ausführt. 2. The new acidic monoazo dye is an orange powder that dissolves in hot water with an orange color and dyes wool, silk and polyamide fibers in lively orange shades of good fastness to washing and perspiration and very good fastness to light. SUBClaims 1. Method according to claim, characterized in that the coupling is carried out in a weakly alkaline medium. 2. Verfahren nach Patentanspruch und Unteranspruch 1, dadurch gekennzeichnet, dass man als schwach alkalisches Medium ein mit Natriumbicarbonat alkalisch gestelltes. Medium wählt. Method according to claim and dependent claim 1, characterized in that the weakly alkaline medium is a medium made alkaline with sodium bicarbonate. Medium chooses.
CH300451D 1951-08-28 1951-08-28 Process for the preparation of an acidic monoazo dye. CH300451A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH300451T 1951-08-28
CH297411T 1951-11-07

Publications (1)

Publication Number Publication Date
CH300451A true CH300451A (en) 1954-07-31

Family

ID=25733839

Family Applications (1)

Application Number Title Priority Date Filing Date
CH300451D CH300451A (en) 1951-08-28 1951-08-28 Process for the preparation of an acidic monoazo dye.

Country Status (1)

Country Link
CH (1) CH300451A (en)

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