CH158719A - 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
CH158719A
CH158719A CH158719DA CH158719A CH 158719 A CH158719 A CH 158719A CH 158719D A CH158719D A CH 158719DA CH 158719 A CH158719 A CH 158719A
Authority
CH
Switzerland
Prior art keywords
production
vat dye
dye
indigoid vat
indigoid
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 CH158719A publication Critical patent/CH158719A/en

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Description

  

  Verfahren zur Herstellung eines     indigolden        Küpenfarbstoffes.       Vorliegendes Patent bezieht sich auf ein  Verfahren zur Herstellung eines     indigoiden          Küpenfarbstoffes,    dadurch gekennzeichnet,       dass    man     2'-Methc>xy-6.        7-benzo-3-oxy-thio-          naplithen    mit einem     2-Auil    des     6-Chlor-4-          methyl-3-keto-2.3-clihydrothionaphthens    kon  densiert.  



  Der so erhaltene Farbstoff färbt     Bauni-          wolle    aus gelber     Küpe    mit braunroten  Tönen an.    <I>Beispiel:</I>       23    Teile     2'-Methoxy-6.        benzo-3-oxy-          thionaphthen    (das aus<B>-</B> Benzin in fast farb  losen Kristallen vom Schmelzpunkt<B>173'</B>  kristallisiert) werden mit<B>33</B> Teilen     6-Chlor-          4   <B>-</B>     metliyl-3-keto-2   <B>.</B>     3-diliydro_-thionaplithen-          2(-p-dimethylamino)

  -anil    in etwa<B>500</B> Teilen    Eisessig bis zur Beendigung der     Farbstoff-          bildung    gekocht. Der ausgeschiedene Farb  stoff wird     abfiltriert    und mit Wasser aus  gewaschen.



  Process for the production of an indigold vat dye. The present patent relates to a process for the preparation of an indigoid vat dye, characterized in that 2'-Methc> xy-6. 7-benzo-3-oxy-thiophthene condenses with a 2-Auil of 6-chloro-4-methyl-3-keto-2,3-clihydrothionaphthene.



  The dye obtained in this way stains cotton wool from a yellow vat with brown-red tones. <I> Example: </I> 23 parts of 2'-methoxy-6. Benzo-3-oxythionaphthene (which crystallizes from <B> - </B> gasoline in almost colorless crystals with a melting point <B> 173 '</B>) are mixed with <B> 33 </B> parts 6- Chlorine- 4 <B> - </B> methyl-3-keto-2 <B>. </B> 3-diliydro_-thionaplithen- 2 (-p-dimethylamino)

  -anil in about <B> 500 </B> parts of glacial acetic acid until the dye has formed. The precipitated dye is filtered off and washed off with water.

Claims (1)

<B>PATENTANSPRUCH:</B> Verfahren zur Herstellung eines indigoi- den Küpenfarbstoffes, dadurch gekennzeich net, dass man 2'-Methoxy-6 .7-benzo-3-oxy- thionaphthen mit einem 2-Anil des 6-Chlor- 4-methyl-3-keto <B>-</B> 2<B>. 3 -</B> dihydrothionaphthens kondensiert. Der so erhaltene Farbstoff färbt Baum wolle aus gelber Küpe mit braunroten Tönen an. <B> PATENT CLAIM: </B> Process for the production of an indigoid vat dye, characterized in that 2'-methoxy-6 .7-benzo-3-oxythionaphthene is mixed with a 2-anil of 6-chloro 4-methyl-3-keto <B> - </B> 2 <B>. 3 - dihydrothionaphthene condensed. The dye obtained in this way stains cotton from a yellow vat with brown-red tones.
CH158719D 1930-08-01 1931-07-27 Process for the production of an indigoid vat dye. CH158719A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE158719X 1930-08-01
CH155459T 1931-07-27

Publications (1)

Publication Number Publication Date
CH158719A true CH158719A (en) 1932-11-30

Family

ID=25716597

Family Applications (1)

Application Number Title Priority Date Filing Date
CH158719D CH158719A (en) 1930-08-01 1931-07-27 Process for the production of an indigoid vat dye.

Country Status (1)

Country Link
CH (1) CH158719A (en)

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