AT73047B - Process for the preparation of indigoid dyes. - Google Patents

Process for the preparation of indigoid dyes.

Info

Publication number
AT73047B
AT73047B AT73047DA AT73047B AT 73047 B AT73047 B AT 73047B AT 73047D A AT73047D A AT 73047DA AT 73047 B AT73047 B AT 73047B
Authority
AT
Austria
Prior art keywords
thionaphthene
oxy
preparation
derivatives
indigoid dyes
Prior art date
Application number
Other languages
German (de)
Inventor
Adolf Dr Jolles
Erwin Dr Schwenk
Original Assignee
Adolf Dr Jolles
Erwin Dr Schwenk
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 Adolf Dr Jolles, Erwin Dr Schwenk filed Critical Adolf Dr Jolles
Application granted granted Critical
Publication of AT73047B publication Critical patent/AT73047B/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
    • C09B7/00—Indigoid dyes
    • C09B7/06—Indone-thionapthene indigos

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Indole Compounds (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Darstellung indigoider Farbstoffe. 



   A. Bezdzik und P. Friedlaender (Monatshefte, Bd.   2,   S. 37   o)   haben gezeigt, dass man durch Kondensation von Isatinanilid oder-chlorid mit   3-Oxy-l-thionaphten den     2-Indol-2-thionaphtenindigo   darstellen kann. Es wurde nun gefunden, dass man zu denselben und ähnlichen Farbstoffen auf einem einfacheren Wege gelangen kann, indem man auf ein Gemenge von 3-Oxy-1-thionaphten bzw. 3-Oxy-1-thionaphten-2-karbonsäure oder deren Derivaten (im Benzolkern substituierten Abkömmlingen) mit Indoxyl bzw.   Indoxylsäure   oder deren Derivaten (im Benzolkern oder am Stickstoff substituierten Abkömmlingen) Oxydationsmittel einwirken lässt. Bedingung ist die gemeinsame Oxydation der Komponenten. 



  Man erhält so Gemenge indigoider Farbstoffe, je nach der relativen Menge der angewandten Ausgangsmaterialien von Blau bis Rotviolett. Immer ist aber der oben bezeichnete Farbstoff vorhanden. 



   Als Beispiel sei die Darstellung eines violetten Farbstoffes angeführt. 



   Die aus 10 technischer Indoxylsäure gewonnene Lösung von Indoxyl wird mit 2 g 3-Oxy-1-thionaphten, das in   Eisessig gelöst   ist, versetzt und mit einer   Auflösung   von   85   bis 9 g Ferrichlorid in Wasser oder einem anderen   1, ösungsmittel versetzt.   Schon in der Kälte bildet sich ein Niederschlag. der durch Umkristallisieren von Beimengungen befreit werden kann. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Process for the preparation of indigoid dyes.



   A. Bezdzik and P. Friedlaender (MONTHS, Vol. 2, p. 37 o) have shown that the 2-indole-2-thionaphthene indigo can be produced by condensation of isatin anilide or chloride with 3-oxy-1-thionaphthene. It has now been found that the same and similar dyes can be obtained in a simpler way by using a mixture of 3-oxy-1-thionaphthene or 3-oxy-1-thionaphthene-2-carboxylic acid or their derivatives (im Benzene nucleus substituted derivatives) with indoxyl or indoxylic acid or their derivatives (in the benzene nucleus or derivatives substituted on nitrogen) allows oxidizing agents to act. The condition is the mutual oxidation of the components.



  Mixtures of indigoid dyes are thus obtained, depending on the relative amount of the starting materials used, from blue to red-violet. But the dye mentioned above is always present.



   An example is the representation of a violet dye.



   The solution of indoxyl obtained from technical indoxylic acid is mixed with 2 g of 3-oxy-1-thionaphthene, which is dissolved in glacial acetic acid, and 85 to 9 g of ferric chloride are dissolved in water or another 1-solvent. Precipitation already forms in the cold. which can be freed from impurities by recrystallization.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

Claims (1)

PATENT-ANSPRUCH : Vorfahren zur Darstellung indigorder Farbstoffe, dadurch gekennzeichnet, dass 3-Oxy- -1-thionaphten bzw. 3-Oxy-1-thionaphten-2-karbonsäure oder ihre Derivate im Gemenge mit indoxyl oder Indoxylsäure hxw. deren Derivaten der Einwirkung von OxydatioIJsrnitte1n ausgesetzt werden. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Ancestors for the representation of indigorder dyes, characterized in that 3-oxy-1-thionaphthene or 3-oxy-1-thionaphthene-2-carboxylic acid or its derivatives in admixture with indoxyl or indoxylic acid hxw. the derivatives of which are exposed to the action of oxidizing agents. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT73047D 1914-10-17 1914-10-17 Process for the preparation of indigoid dyes. AT73047B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT73047T 1914-10-17

Publications (1)

Publication Number Publication Date
AT73047B true AT73047B (en) 1917-02-10

Family

ID=3594706

Family Applications (1)

Application Number Title Priority Date Filing Date
AT73047D AT73047B (en) 1914-10-17 1914-10-17 Process for the preparation of indigoid dyes.

Country Status (1)

Country Link
AT (1) AT73047B (en)

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