CH158722A - Process for the production of an indigoid vat dye. - Google Patents

Process for the production of an indigoid vat dye.

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Publication number
CH158722A
CH158722A CH158722DA CH158722A CH 158722 A CH158722 A CH 158722A CH 158722D A CH158722D A CH 158722DA CH 158722 A CH158722 A CH 158722A
Authority
CH
Switzerland
Prior art keywords
production
dye
indigoid
vat dye
naphthisatin
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 CH158722A publication Critical patent/CH158722A/en

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Description

  

  Verfahren zur Herstellung eines     indigoiden        Y üpenfarbstofes.       Vorliegendes Patent bezieht sich auf ein  Verfahren zur Herstellung eines     indigoiden          Nüpenfarbstoffes,    dadurch     gekennzeichnet,     dass man     Monobrom-2.        1-Naphtisatin,    erhal  ten durch     Bromieriing"    von 2.     1-Naphtisatin,     nach Überführung in das     a-Chlorid    mit       2'-iUethoxy    - 6 . 7 -     benzo-3-oxy-thionaphthen     kondensiert.  



  Der so erhaltene Farbstoff löst sich in  konzentrierter Schwefelsäure mit blauviolet  ter Farbe und färbt aus gelber     güpe    die  Faser olive.  



  <I>Beispiel:</I>  27 Teile     Monobrom-2.        1-naphtisatin,    das  durch     Bromieren    von 2.     1-Naphtisatin    erhal  ten wurde, werden durch Erwärmen mit 26  Teilen     Phosphorpentachlorid    in etwa 400  Teilen Chlorbenzol in das     Isatin-a-ohlorid     übergeführt. Diese Lösung vereinigt man  dann mit einer Lösung von     23    Teilen         2'-Methoxy-6    .     7-benzo-3-oxy-thionaphthen    in  Chlorbenzol. Man erwärmt noch kurze Zeit  auf etwa     .80    bis 85  , filtriert den gebildeten  Farbstoff ab, wäscht ihn mit Chlorbenzol  aus und trocknet.



  Process for the production of an indigoid Yupene dye. The present patent relates to a process for the production of an indigoid pebble dye, characterized in that monobromo-2. 1-naphthisatin, obtained by bromination "of 2. 1-naphthisatin, condensed after conversion into the α-chloride with 2'-ethoxy - 6, 7 - benzo-3-oxy-thionaphthene.



  The dye obtained in this way dissolves in concentrated sulfuric acid with a blue-violet color and dyes the fiber olive from a yellow güpe.



  <I> Example: </I> 27 parts of Monobrom-2. 1-naphtisatin, which was obtained by brominating 2. 1-naphtisatin, is converted into isatin a-chloride by heating with 26 parts of phosphorus pentachloride in about 400 parts of chlorobenzene. This solution is then combined with a solution of 23 parts of 2'-methoxy-6. 7-benzo-3-oxy-thionaphthene in chlorobenzene. The mixture is heated for a short time to about .80 to 85, the dye formed is filtered off, washed out with chlorobenzene and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines indi- goiden güpenfarbstoffes. dadurch gekenn zeichnet, dass man -Monobrom-2. 1-naphtisa- tin, erhalten durch Bromierung von 2. 1- Naphtisatin, nach Überführung in das a-Chlo- rid mit 2'-14Tethoxy-6.7-benzo-3-oay-thio- naphthen kondensiert. PATENT CLAIM: Process for the production of an indigoid high-quality dye. characterized in that one monobromo-2. 1-naphthisatin, obtained by bromination of 2.1-naphthisatin, condensed after conversion into the α-chloride with 2'-14-thoxy-6.7-benzo-3-oay-thione naphthene. Der so erhaltene Farbstoff löst sich 111 konzentrierter Schwefelsäure mit blauviolet ter Farbe und färbt aus gelber Küpe die Faser olive. The dye obtained in this way dissolves in concentrated sulfuric acid with a blue-violet color and dyes the fiber olive from a yellow vat.
CH158722D 1930-08-01 1931-07-27 Process for the production of an indigoid vat dye. CH158722A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE158722X 1930-08-01
CH155459T 1931-07-27

Publications (1)

Publication Number Publication Date
CH158722A true CH158722A (en) 1932-11-30

Family

ID=25716600

Family Applications (1)

Application Number Title Priority Date Filing Date
CH158722D CH158722A (en) 1930-08-01 1931-07-27 Process for the production of an indigoid vat dye.

Country Status (1)

Country Link
CH (1) CH158722A (en)

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