CH135142A - Process for the production of a violet vat dye of the 2-thionaphthene-2'-indolindigo series. - Google Patents

Process for the production of a violet vat dye of the 2-thionaphthene-2'-indolindigo series.

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Publication number
CH135142A
CH135142A CH135142DA CH135142A CH 135142 A CH135142 A CH 135142A CH 135142D A CH135142D A CH 135142DA CH 135142 A CH135142 A CH 135142A
Authority
CH
Switzerland
Prior art keywords
thionaphthene
series
indolindigo
production
dye
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 CH135142A publication Critical patent/CH135142A/en

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Description

  

  Verfahren zur Herstellung eines violetten     Küpenfarbstoffes    der     2-Thionaphten-          2'-indolindigoreihe.            Gegenstand    der vorliegenden Erfindung ist  ein Verfahren zur Darstellung eines violetten       Küpenfarbstoffes    der     2-Thionaphten-2'-iuclol-          indigoreihe    der Formel:

    
EMI0001.0008     
    den man durch Kondensation von     5-Chlor-          4.        7-dimethyl-3-oxy-l-thionaphten    mit einer  reaktionsfähigen 5 . 7 -     Dimethylisatin    -     a-          verbindung    erhält. Trocken     ist    der Farb  stoff ein violett gefärbtes Pulver, das in kon  zentrierter     ,Schwefelsäure    blaugrün löslich  ist. Mit Natronlauge und     1lydrosulfit    gibt  er eine gelbe     K'üpe,    aus der die Faser echt  violett angefärbt wird.

           Beispiel:     17,5 Gewichtsteile 5 . 7 -     Dimethylisatin     werden in etwa. 20,0 Gewichtsteilen Chlor  benzol suspendiert und nach Zusatz von  22 Gewichtsteilen     Phosphorpentachlorid    er  hitzt. Die entstandene Lösung des     5.7-Di-          methylisatin-a-chlorids    wird in eine Lö  sung von 21.2 Gewichtsteilen     5-Chlor-          .t.        7-dimethyl-3-oxy-l-thionaphten    in 200 Ge  wichtsteilen Chlorbenzol einlaufen gelassen,  wobei sich .der Farbstoff sofort abscheidet.

    Nach     kurzem    Erwärmen auf 80 bis<B>90'</B> wird  der Farbstoff     filtriert,    mit Alkohol gewa  schen und getrocknet.



  Process for the preparation of a violet vat dye of the 2-thionaphthene-2'-indolindigo series. The present invention relates to a process for the preparation of a violet vat dye of the 2-thionaphthene-2'-iuclol indigo series of the formula:

    
EMI0001.0008
    which is obtained by condensation of 5-chloro-4. 7-dimethyl-3-oxy-1-thionaphthene with a reactive 5. 7 - dimethylisatin - a compound is obtained. When dry, the dye is a violet-colored powder that is soluble in concentrated sulfuric acid in a blue-green color. With caustic soda and lydrosulfite he gives a yellow vat from which the fiber is stained really purple.

           Example: 17.5 parts by weight 5. 7 - Dimethylisatin will be roughly. 20.0 parts by weight of chlorine benzene suspended and after the addition of 22 parts by weight of phosphorus pentachloride it is heated. The resulting solution of the 5.7-dimethylisatin-a-chloride is in a solution of 21.2 parts by weight of 5-chlorine .t. 7-dimethyl-3-oxy-l-thionaphthene in 200 parts by weight of chlorobenzene is allowed to run in, the dye separating out immediately.

    After briefly heating to 80 to <B> 90 '</B>, the dye is filtered, washed with alcohol and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen Küpenfarbstoffes der 2-Thionaphten-2'-indol- indigoreihe der Formel:: EMI0002.0001 dadurch gekennzeichnet, dass man 5-Chlor- 4 . 7-dimethyl-3-oxy-l-thionaphten mit einer reaktionsfähigen 5. 7 - Dimethylisatin - a- verbindung kondensiert. PATENT CLAIM: Process for the preparation of a new vat dye of the 2-thionaphthene-2'-indole indigo series of the formula: EMI0002.0001 characterized in that 5-chloro-4. 7-dimethyl-3-oxy-l-thionaphthene with a reactive 5. 7-dimethylisatin-a-compound condensed. Trocken ist der Farbstoff ein violettes Pulver, das in kon zentrierter Schwefelsäure mit blaugrüner Farbe löslich ist; mit Natronlauge und Ry- drosul_fit bildet er eine gelbe Küpe, aus der die Faser echt violett angefärbt wird. When dry, the dye is a purple powder that is soluble in concentrated sulfuric acid with a blue-green color; with caustic soda and Rydrosul_fit it forms a yellow vat from which the fiber is stained really purple.
CH135142D 1927-01-03 1927-12-30 Process for the production of a violet vat dye of the 2-thionaphthene-2'-indolindigo series. CH135142A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE135142X 1927-01-03
CH132316T 1927-12-30

Publications (1)

Publication Number Publication Date
CH135142A true CH135142A (en) 1929-08-31

Family

ID=25711850

Family Applications (1)

Application Number Title Priority Date Filing Date
CH135142D CH135142A (en) 1927-01-03 1927-12-30 Process for the production of a violet vat dye of the 2-thionaphthene-2'-indolindigo series.

Country Status (1)

Country Link
CH (1) CH135142A (en)

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