CH210535A - Process for the production of a sulfur dye. - Google Patents

Process for the production of a sulfur dye.

Info

Publication number
CH210535A
CH210535A CH210535DA CH210535A CH 210535 A CH210535 A CH 210535A CH 210535D A CH210535D A CH 210535DA CH 210535 A CH210535 A CH 210535A
Authority
CH
Switzerland
Prior art keywords
sulfur dye
production
sulfur
leucoindophenol
aminonaphthalene
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 CH210535A publication Critical patent/CH210535A/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

  

  <B>Zusatzpatent</B> zum Hauptpatent Nr. 207345.    Verfahren zur Herstellung eines     Schwefelfarbstoffes.       Vorliegendes Patent bezieht sich auf ein    Verfahren zur     Herstellung    eines Schwefel  farbstoffes, dadurch     gekennzeichnet,        dass    man  das     Leukoindophenol,    wie es aus     4'-Benzoyl-          aminophenyl    -1-     aminonaphthalin    - 8     -sulfon-          säure    und     p-Aminophenol    erhältlich ist, mit  einem     Alkalipolysulfid    behandelt.  



  Der so erhaltene Schwefelfarbstoff ist ein  dunkelblaues Pulver, das sich in konzen  trierter Schwefelsäure nur schwer mit blauer  Farbe löst, und färbt die pflanzliche Faser  aus dem     'Schwefelnatriumbade    in ,grünen  Tönen von     guten    Echtheitseigenschaften.  



  <I>Beispiel:</I>  15 Teile des     Leukoindophenols    aus       4'-Benzoylaminophenyl-l-aminonaphthalin-8-          sulfonsäure    und     p-Aminophenol    werden mit  einer wässerigen     Polysulfidlösung    aus 45 Tei  len kristallisiertem Schwefelnatrium und 30  Teilen Schwefel mehrere Stunden     unter    Rück  flusskühlung auf etwa<B>105'</B> 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 aus  geblasen und wie üblich abgeschieden.



  <B> Additional patent </B> 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 the leucoindophenol, such as is obtainable from 4'-benzoylaminophenyl -1-aminonaphthalene-8-sulfonic acid and p-aminophenol, is obtained with an alkali polysulfide treated.



  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 of good fastness properties.



  <I> Example: </I> 15 parts of the leucoindophenol from 4'-benzoylaminophenyl-1-aminonaphthalene-8-sulfonic acid and p-aminophenol are refluxed with an aqueous polysulfide solution of 45 parts of crystallized sodium sulfur and 30 parts of sulfur for several hours heated to about <B> 105 '</B>. After dilution: the finished melt with about 300 parts of water and the addition of 15 parts of crystallized sodium sulphide and a little common salt, the dye is blown out with air and deposited as usual.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Schwefel- farbstoffes, dadurch ,gekennzeichnet, dass man das Leukoindophenol, wie es aus 4'-Benzoyl- aminophenyl -1- aminonaphthalin - 8 - sulfon- säure 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'-benzoyl aminophenyl -1-aminonaphthalene-8-sulfonic acid and p-aminophenol, is treated with an alkali polysulfide. Der so erhaltene Schwefelfarbstoff ist ein dunkelblaues Pulver, ,das sieh in konzen trierter Schwefelsäure nur schwer mit blauer Farbe löst, und färbt die pflanzliche Faser aus dem Scha"efelnatriumbade 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 dyes the vegetable fiber from the sheep sodium bath in green shades of good fastness properties.
CH210535D 1937-12-22 1938-12-15 Process for the production of a sulfur dye. CH210535A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE210535X 1937-12-22
CH207345T 1938-08-19

Publications (1)

Publication Number Publication Date
CH210535A true CH210535A (en) 1940-07-15

Family

ID=25724379

Family Applications (1)

Application Number Title Priority Date Filing Date
CH210535D CH210535A (en) 1937-12-22 1938-12-15 Process for the production of a sulfur dye.

Country Status (1)

Country Link
CH (1) CH210535A (en)

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