AT51616B - Process for the preparation of vat dyes. - Google Patents

Process for the preparation of vat dyes.

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Publication number
AT51616B
AT51616B AT51616DA AT51616B AT 51616 B AT51616 B AT 51616B AT 51616D A AT51616D A AT 51616DA AT 51616 B AT51616 B AT 51616B
Authority
AT
Austria
Prior art keywords
preparation
anthraquinone
vat dyes
amino
thioxanthone
Prior art date
Application number
Other languages
German (de)
Original Assignee
Hoechst 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 Hoechst Ag filed Critical Hoechst Ag
Application granted granted Critical
Publication of AT51616B publication Critical patent/AT51616B/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Darstellung von   Küpenfarbstoffen.   



   Das durch Kondensation von   Thiosalizylsäure und &alpha;-Chloranthrachinon   und nachträgliche   Behandlung   mit wasserentziehenden Mitteln erhältliche Anthrachinon-thioxanthon ist als Farbstoff wertlos, da es   farbschwach   ist und ausserdem nur wenig Verwandtschaft zur Faser besitzt. Aus   denseihen Grl1ndt ! n   kommen auch Aminoderivate desselben als   Farb-   stoffo nicht Betracht. 



   Es wurde aber gefunden, dass die   Dianthracbinonylamine,   die zugleich Thioxanthon6 sind und welche man aus Amino- und halogenanthrachinon-thioxanthonderivaten durch Umsetzen mit Halogen- bzw. Aminoanthrachinonderivaten gewinnen   kann, wertvolle Küpen-   farbstoffe sind. 



   Die in dem Verfahren der vorliegenden Erfindung verwendeten Aminoanthrachinonthioxanthone können durch Umsetzen von Aminochloranthrachinonen mit Thiosalizylsäure und folgende Kondensation mit Chlorsulfonsäure hergestellt werden. 



   Beispiel : 
 EMI1.1 
 in konzentrierter Schwefelsäure unter Zusatz von Formaldehyd Illit violetter Farbe löst ; es Ist schwer löslich in den gebräuchlichen Lösungsmitteln. Mit alkalischem Hydrosultit gibt es eine   braunvioiette Küpe.   aus welcher auf Baumwolle Bordeauxnuancen von hervorragender Echtheit entstehen. 



   In analoger Weise gewinnt man ahnliche Farbstoffe, beispielsweise durch Umsetzen von 1-Amino-5.6-anthrachinonthioxanthon mit 1.5-Dichloranthrachinon und 1-Chlor-5. 6-   anthrachinon-thioxanthon   oder von 1-Chlor-5. 6-anthrachinon-thioxanthon mit   x-nnd jj-Amino-   anthrachinon. 

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



   <Desc / Clms Page number 1>
 



  Process for the preparation of vat dyes.



   The anthraquinone-thioxanthone obtainable by condensation of thiosalicylic acid and α-chloroanthraquinone and subsequent treatment with dehydrating agents is worthless as a dye, since it is weak in color and, moreover, has little relationship to fibers. For the sake of origin! Amino derivatives of the same do not come into consideration as dyes either.



   However, it has been found that the dianthracbinonylamines, which are also thioxanthone6 and which can be obtained from amino and halogenanthraquinone thioxanthone derivatives by reacting with halogen or aminoanthraquinone derivatives, are valuable vat dyes.



   The aminoanthraquinone thioxanthones used in the process of the present invention can be prepared by reacting aminochloroanthraquinones with thiosalicylic acid and then condensing it with chlorosulfonic acid.



   Example:
 EMI1.1
 Dissolves illite of violet color in concentrated sulfuric acid with the addition of formaldehyde; it is sparingly soluble in common solvents. There is a brown violet vat with alkaline hydrosultite. from which on cotton shades of Bordeaux of excellent authenticity arise.



   Similar dyes are obtained in an analogous manner, for example by reacting 1-amino-5,6-anthraquinone thioxanthone with 1,5-dichloroanthraquinone and 1-chloro-5. 6- anthraquinone-thioxanthone or from 1-chloro-5. 6-anthraquinone thioxanthone with x-nnd jj-amino anthraquinone.

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

Claims (1)

PATENTANSPRUCH : EMI1.2 Amino- und Chlor-Anthrachinon-thioxanthonderivate umsetzt mit Chlor-bzw. Amino-anthra- ehinondf'rivaten. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: EMI1.2 Amino- and chloro-anthraquinone-thioxanthone derivatives reacts with chlorine or. Amino-anthraquinone derivatives. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT51616D 1909-09-28 1910-07-16 Process for the preparation of vat dyes. AT51616B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE51616X 1909-09-28

Publications (1)

Publication Number Publication Date
AT51616B true AT51616B (en) 1912-01-10

Family

ID=5627048

Family Applications (1)

Application Number Title Priority Date Filing Date
AT51616D AT51616B (en) 1909-09-28 1910-07-16 Process for the preparation of vat dyes.

Country Status (1)

Country Link
AT (1) AT51616B (en)

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