CH212580A - Process for the production of a sulfur dye. - Google Patents

Process for the production of a sulfur dye.

Info

Publication number
CH212580A
CH212580A CH212580DA CH212580A CH 212580 A CH212580 A CH 212580A CH 212580D A CH212580D A CH 212580DA CH 212580 A CH212580 A CH 212580A
Authority
CH
Switzerland
Prior art keywords
sulfur
production
sulfur dye
dye
leucoindophenol
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 CH212580A publication Critical patent/CH212580A/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
    • C09B49/00—Sulfur dyes
    • C09B49/10—Sulfur dyes from diphenylamines, indamines, or indophenols, e.g. p-aminophenols or leucoindophenols

Landscapes

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

Description

  

      Zusatzpatent    zum Hauptpatent Nr. 207345.    Verfahren zur Herstellung eines     Schwefelfarbstoffes.       Vorliegendes Patent bezieht sich auf     ein          Jerfahren    zur Herstellung eines     Schwefel-          'arbstoffes,        dadurchgekennzeichnet,    dass man  las     Leukoindophenol,    wie es aus     4'-Acetyl-          Lminodiphenyl-1-        aminonaphthalin-    8 -     sulf        on-          ;

  äure    und     p-Aminophenol    erhältlich     ist,        mit          ;inem        Alkalipolysulfid    behandelt.  



  Der so erhaltene Schwefelfarbstoff ist       :in    dunkelblaues Pulver, das sich in     konzen-          ;rierter    Schwefelsäure nur schwer     mit    blauer       %rbe    löst, und färbt die pflanzliche Faser  ins dem     Schwefelnatriumbade        in    grünen  Tönen von guten Echtheitseigenschaften.

      <I>Beispiel:</I>    15 Teile des     Leukoindophenols    aus 4'  Aeetylaminodiphenyl-1-     aminonaphthalin-    8  3ulfonsäure und     p-Aminophenol    werden mit       siner        wässerigen        Polysulfidlösung    aus 45  Teilen kristallisiertem Schwefelnatrium und  30 Teilen Schwefel mehrere Stunden unter       Rückflusskühlung    auf etwa<B>1051</B> C erhitzt.

      Nach     Verdünnen    der     fertigen        Schmelze    mit  etwa 300 Teilen Wasser und Zusatz von 15  Teilen kristallisiertem Schwefelnatrium     und          etwas    Kochsalz wird der Farbstoff mit Luft  ausgeblasen und wie üblich     abgeschieden.  



      Additional patent to main patent no. 207345. Process for the production of a sulfur dye. The present patent relates to a process for the preparation of a sulfur 'dye, characterized in that one read leucoindophenol as it is obtained from 4'-acetyl-Lminodiphenyl-1-aminonaphthalin- 8 - sulf on-;

  acid and p-aminophenol is available, treated with an alkali polysulfide.



  The sulfur dye obtained in this way is: in dark blue powder, which is difficult to dissolve in concentrated sulfuric acid with a blue color, and colors the vegetable fibers in the sulfur sodium bath in green shades with good fastness properties.

      <I> Example: </I> 15 parts of the leucoindophenol from 4 'acetylaminodiphenyl-1-aminonaphthalene-8 3ulfonic acid and p-aminophenol are refluxed with an aqueous polysulfide solution of 45 parts of crystallized sodium sulfide and 30 parts of sulfur for several hours to about <B > 1051 </B> C heated.

      After the finished melt has been diluted with about 300 parts of water and 15 parts of crystallized sodium sulphide and a little sodium chloride have been added, the dye is blown out with air and deposited as usual.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Schwe felfarbstoffes, dadurch gekennzeichnet, dass man das Leukoindophenol, wie es aus 4'- Acetylaminodiphenyl-1- aminonaphthalin- 8 - sulfonsäure und p-Aminophenol erhältlich ist, mit einem Alkalipolysulfid behandelt. PATENT CLAIM: A process for the production of a sulfur dye, characterized in that the leucoindophenol, as obtainable from 4'-acetylaminodiphenyl-1-aminonaphthalene-8-sulfonic acid and p-aminophenol, is treated with an alkali polysulfide. Der so erhaltene Schwefelfarbstoff ist ein dunkelblaues Pulver, das sich in konzentrier ter Schwefelsäure nur schwer mit blauer Farbe löst, und färbt die pflanzliche Faser aus dem Schwefelnatriumbade in grünen Tönen von guten Echtheitseigenschaften. The sulfur dye obtained in this way is a dark blue powder which is difficult to dissolve in concentrated sulfuric acid with a blue color, and it dyes the vegetable fibers from the sulfur sodium bath in green shades with good fastness properties.
CH212580D 1938-02-16 1939-02-07 Process for the production of a sulfur dye. CH212580A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE212580X 1938-02-16
CH207345T 1938-08-19

Publications (1)

Publication Number Publication Date
CH212580A true CH212580A (en) 1940-11-30

Family

ID=25724387

Family Applications (1)

Application Number Title Priority Date Filing Date
CH212580D CH212580A (en) 1938-02-16 1939-02-07 Process for the production of a sulfur dye.

Country Status (1)

Country Link
CH (1) CH212580A (en)

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