CH130087A - Process for the preparation of a violet vat dye of the 2-thionaphthene-2-indolindigo series. - Google Patents

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

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Publication number
CH130087A
CH130087A CH130087DA CH130087A CH 130087 A CH130087 A CH 130087A CH 130087D A CH130087D A CH 130087DA CH 130087 A CH130087 A CH 130087A
Authority
CH
Switzerland
Prior art keywords
series
thionaphthene
preparation
violet
indolindigo
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 CH130087A publication Critical patent/CH130087A/en

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  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)

Description

  

  Verfahren zur Herstellung eines violetten     Nüpenfarbstoffes     der     2-Thionaphten-2-indolindigoreihe.       Es wurde gefunden, dass man einen  neuen violetten     Küpenfarbstoff    erhält, wenn  man 4 .     7-Dimethyl-5-bromoxythioiiaphten    mit       einem        :5-Brom-7-chlorisatin    kondensiert, in  dessen     a-Stellung    sich eine labile Gruppe be  findet.  



  Der neue Farbstoff bildet ein     violettblaues     Pulver, das sich in konzentrierter Schwefel  säure mit blaugrüner Farbe löst. Er färbt  Baumwolle aus gelber     Hydrosulfitkiipe    in vio  letten Tönen an. Gegenüber den bisher be  kannt gewordenen     Farbstoffen    der     2-Thio-          riaphten-2-indolindigoreihe    zeichnet sich der  neue Farbstoff durch Reinheit der Nuance  und bessere     Sodakochechtheit    aus.  



  Das bisher noch nicht beschriebene 4.     7-          Dimethyl    - 5 -     bi-omoxythionaphten    kann man  aus dem     1-Amido-4-brom-2.5-Xylol    durch  Überführung in die     4-Brom-2    .     5-Xylol-l-thio-          glykolsäure    und deren     Ringschluss    nach be  kannten Methoden erhalten.

      <I>Beispiel</I>    26 Gewichtsteile 5 -Brom - 7 -     chlorisatin     werden in etwa 200 Gewichtsteilen Chlor  benzol durch Erwärmen mit 22 Gewichtsteilen       Phosphorpentachlorid    in das     5-Brom-7-chlori-          satin-a-chlorid    übergeführt. Diese Lösung wird  mit einer Suspension von 35.5 Gewichts  teilen 4.     7-Dimethyl-5-brornoxythionaphteri    in  200 Gewichtsteile Chlorbenzol vereinigt und  einige Geit auf 60-70   erwärmt. Der hierbei  entstandene Farbstoff wird filtriert und mit  Chlorbenzol, zuletzt mit Sprit gewaschen.  



  In gleicher Weise kann man das     5-Brom-          7-chlorisatin-ct-anilid    zur Kondensation ver  wenden.



  Process for the production of a violet pimple dye of the 2-thionaphthene-2-indolindigo series. It has been found that a new violet vat dye is obtained if 4. 7-Dimethyl-5-bromoxythioiiaphten condensed with a: 5-bromo-7-chlorisatin, in whose a-position there is a labile group.



  The new dye forms a purple-blue powder that dissolves in concentrated sulfuric acid with a blue-green color. He dyes cotton from yellow hydrosulfite pipes in purple tones. Compared to the previously known dyes of the 2-thio-riaphten-2-indolindigo series, the new dye is distinguished by its purity of shade and better fastness to soda cooking.



  4. 7-Dimethyl-5-bi-omoxythionaphten, which has not yet been described, can be obtained from 1-amido-4-bromo-2,5-xylene by converting it into 4-bromo-2. 5-xylene-1-thioglycolic acid and its ring closure obtained by known methods.

      <I> Example </I> 26 parts by weight of 5-bromine-7-chloroisatin are converted into 5-bromo-7-chlorisatin-a-chloride in about 200 parts by weight of chlorobenzene by heating with 22 parts by weight of phosphorus pentachloride. This solution is combined with a suspension of 35.5 parts by weight of 4. 7-dimethyl-5-brornoxythionaphteri in 200 parts by weight of chlorobenzene and heated to 60-70 for a few times. The resulting dye is filtered and washed with chlorobenzene, finally with fuel.



  In the same way, you can use the 5-bromo-7-chloroisatin-ct-anilide for the condensation ver.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines violetten Küpenfarbstoffes der 2-Thionaphten-2-indolin- digoreihe von der Formel: EMI0002.0001 dadurch gekennzeichnet, dass man 4. 7-Dime- thyl-5-bromogythionaphten mit einem 5-Brom- 7-chlorisatin kondensiert, in dessen a-Stellung sich eine labile Gruppe befindet. PATENT CLAIM: Process for the preparation of a violet vat dye of the 2-thionaphthene-2-indoline digo series of the formula: EMI0002.0001 characterized in that 4. 7-dimethyl-5-bromogythionaphthene is condensed with a 5-bromo-7-chloroisatin in whose a position there is a labile group. Der neue Farbstoff bildet ein violettblaues Pulver, das sich in konzentrierter Schwefel- säure mit blaugrüner Farbe löst. tr färbt Baumwolle und Wolle aus gelber Hydrosul- fitküpe in lebhaften violetten Tönen an. Ge genüber den bisher bekannt gewordenen Farb stoffen der 2-Thionaphten-2-indolitidigoreihe zeichnet der neue Farbstoff sich durch Rein heit der Nuance und bessere Sodakochecht- heit aus. The new dye forms a violet-blue powder that dissolves in concentrated sulfuric acid with a blue-green color. tr dyes cotton and wool from a yellow hydrosulfite vat in lively purple tones. Compared to the previously known dyes of the 2-thionaphthene-2-indolitidigo series, the new dye is characterized by its purity of shade and better fastness to soda.
CH130087D 1926-02-19 1927-02-14 Process for the preparation of a violet vat dye of the 2-thionaphthene-2-indolindigo series. CH130087A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE130087X 1926-02-19
CH127268T 1927-02-14

Publications (1)

Publication Number Publication Date
CH130087A true CH130087A (en) 1928-11-15

Family

ID=25710855

Family Applications (1)

Application Number Title Priority Date Filing Date
CH130087D CH130087A (en) 1926-02-19 1927-02-14 Process for the preparation of a violet vat dye of the 2-thionaphthene-2-indolindigo series.

Country Status (1)

Country Link
CH (1) CH130087A (en)

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