CH107525A - Process for the production of a sulfur dye. - Google Patents

Process for the production of a sulfur dye.

Info

Publication number
CH107525A
CH107525A CH107525DA CH107525A CH 107525 A CH107525 A CH 107525A CH 107525D A CH107525D A CH 107525DA CH 107525 A CH107525 A CH 107525A
Authority
CH
Switzerland
Prior art keywords
production
blue
sulfur
sulfur dye
dye
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH107525A publication Critical patent/CH107525A/en

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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

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

Description

  

      Zusatzpatent    zum Hauptpatent Nr. 107205.    Verfahren zur Herstellung eines     Schwefelfarbstoffes.       Es wurde gefunden, dass das bis anhin  unbekannte Indophenol aus     p-Chlor-o,        o'-Dito-          lylamin,        herstellbar    zum Beispiel durch Kon  densation von     p-Chlor-o.        o'-Ditolylamin    mit       Nitrosophenol    in Schwefelsäure, beim Erhitzen  mit     Alkalipolysulfiden    einen neuen Schwefel  farbstoff liefert. Dieser bildet ein blaues Pul  ver und färbt Baumwolle im Schwefelnatrium  bade hervorragend wasch- und seifenkochecht  lebhaft blau.

      <I>Beispiel:</I>    43 Teile des Indophenols, erhalten aus       p-Chlor-o.o'-Ditolylamin    und     Nitrosophenol,     werden mit einer     Polysulfidlösung,    hergestellt  aus 72 Teilen kristallisiertem Schwefelnatrium  und 43 Teilen Schwefel, bis zum Siedepunkt  125   C eingekocht und dann am rückflie  ssenden Kühler während 12-20 Stunden ge  kocht. Aus der mit Wasser verdünnten    Schmelze kann der     Farbstoff    durch     Aussäuern     oder Ausblasen mit Luft abgeschieden werden.

    Derselbe     Farbstoff    entsteht, wenn man vom  entsprechenden     Leukoindophenol    ausgeht, oder  wenn man die     Schwefelung    in Gegenwart  von Alkohol durchführt.



      Additional patent to main patent no. 107205. Process for the production of a sulfur dye. It has been found that the hitherto unknown indophenol from p-chloro-o, o'-dito- lylamine, can be prepared, for example, by condensation of p-chloro-o. o'-Ditolylamine with nitrosophenol in sulfuric acid, when heated with alkali polysulphides provides a new sulfur dye. This forms a blue powder and dyes cotton bathed in sulfuric sodium, which is extremely washable and soap-proof, lively blue.

      <I> Example: </I> 43 parts of indophenol, obtained from p-chloro-o.o'-ditolylamine and nitrosophenol, are mixed with a polysulphide solution made from 72 parts of crystallized sodium sulphide and 43 parts of sulfur, up to a boiling point of 125 ° C boiled down and then boiled on the refluxing cooler for 12-20 hours. The dye can be separated from the melt diluted with water by acidifying it or blowing it out with air.

    The same dye is produced if you start from the corresponding leucoindophenol, or if you carry out the sulphurisation in the presence of alcohol.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines blauen Schwefelfarbstoffes, dadurch gekennzeichnet, dass das durch Kondensation von p-Chlor-o. o'- Ditolylamin mit Nitrosophenol erhältliche In- dophenol mit Alkalipolysulfiden behandelt wird. Der neue Farbstoff bildet ein blaues Pulver und färbt Baumwolle im Schwefel natriumbade hervorragend wasch- und seifen kochecht lebhaft blau. PATENT CLAIM: Process for the production of a blue sulfur dye, characterized in that the by condensation of p-chloro-o. o'-Ditolylamine with nitrosophenol available indophenol is treated with alkali polysulphides. The new dye forms a blue powder and dyes cotton in a sulfur-sodium bath, making it extremely washable and soapy, lively blue.
CH107525D 1923-07-20 1924-06-28 Process for the production of a sulfur dye. CH107525A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH107205T 1923-07-20
CH107525T 1924-06-28

Publications (1)

Publication Number Publication Date
CH107525A true CH107525A (en) 1924-11-01

Family

ID=25707140

Family Applications (1)

Application Number Title Priority Date Filing Date
CH107525D CH107525A (en) 1923-07-20 1924-06-28 Process for the production of a sulfur dye.

Country Status (1)

Country Link
CH (1) CH107525A (en)

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