CH157250A - Process for the production of a vat dye preparation. - Google Patents

Process for the production of a vat dye preparation.

Info

Publication number
CH157250A
CH157250A CH157250DA CH157250A CH 157250 A CH157250 A CH 157250A CH 157250D A CH157250D A CH 157250DA CH 157250 A CH157250 A CH 157250A
Authority
CH
Switzerland
Prior art keywords
production
dye preparation
vat dye
copper compound
weight
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 CH157250A publication Critical patent/CH157250A/en

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

Description

  

      Verfahren    zur Herstellung eines     Kiipenfarbstoffpräparates.       Gegenstand dieses Zusatzpatentes ist ein  Verfahren zur Herstellung eines     Küpenfarb-          stoffpräparates,    welches dadurch gekennzeich  net ist, dass man     4-Methyl-6-chlor-3-oxythio-          naphten    in Gegenwart einer Kupferverbindung  zu dem entsprechenden     Thioindigo    im alkali  schen Medium oxydiert.  



  <I>Beispiel:</I>  100 Gewichtsteile     4-Methyl-6-ohlor-3-oxy-          thionaphten    werden mit 80 Gewichtsteilen  Schwefel, 200 Gewichtsteilen Sprit und 1  bis 10 Gewichtsteilen Kupfersulfat in 5 bis  50 Gewichtsteilen Wasser angerührt. Dann  wird mit Wasser auf 3000 Gewichtsteile ein  gestellt und auf 60   C erhitzt. Es werden  nun 200 Gewichtsteile Natronlauge von  40   B6 zugegeben. Die Temperatur wird  nun zum Sieden gebracht, und es wird so  lange nacherhitzt, bis die     Farbstoffbildung     beendet ist. Dann wird filtriert, ausgewaschen  und der     Presskuchen    wird entweder getrock  net oder auf wässerige Paste eingestellt.

    Statt     Kupfersulfat    kann auch irgend eine  andere     Kupferverbindung    genommen werden.    Das so hergestellte     Küpenfarbstoffpräparat          verküpt    sich erheblich rascher, als der ohne       Zusatz    einer Kupferverbindung hergestellte  Farbstoff.



      Process for the production of a Kiipen dye preparation. The subject of this additional patent is a process for the production of a vat dye preparation which is characterized in that 4-methyl-6-chloro-3-oxythionnaphthene is oxidized in the presence of a copper compound to the corresponding thioindigo in an alkaline medium.



  <I> Example: </I> 100 parts by weight of 4-methyl-6-chloro-3-oxy-thionaphtene are mixed with 80 parts by weight of sulfur, 200 parts by weight of fuel and 1 to 10 parts by weight of copper sulfate in 5 to 50 parts by weight of water. Then it is set to 3000 parts by weight with water and heated to 60C. 200 parts by weight of sodium hydroxide solution of 40 B6 are now added. The temperature is now brought to the boil and heating is continued until the dye formation has ended. It is then filtered, washed out and the press cake is either dried or adjusted to an aqueous paste.

    Any other copper compound can be used instead of copper sulfate. The vat dye preparation produced in this way evaporates considerably more quickly than the dye produced without the addition of a copper compound.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Küpen- farbstoffpräparates, dadurch gekennzeichnet, dass man 4-Methyl-6.chlor-3-oxythionaphten in Gegenwart einer Kupferverbindung zu dem entsprechenden Thioindigo im alkali schen Medium oxydiert. Das so hergestellte Küpenfarbstoffpräparat verküpt sich erheblich rascher, als der ohne Zusatz einer Kupfer verbindung hergestellte Farbstoff. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man als Kupferverbin dung Kupfersulfat verwendet. Claim: Process for the production of a vat dye preparation, characterized in that 4-methyl-6-chloro-3-oxythionaphthene is oxidized in the presence of a copper compound to give the corresponding thioindigo in an alkaline medium. The vat dye preparation produced in this way evaporates considerably faster than the dye produced without the addition of a copper compound. SUBCLAIM: Method according to claim, characterized in that copper sulfate is used as the copper compound.
CH157250D 1931-02-19 1931-02-19 Process for the production of a vat dye preparation. CH157250A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH153495T 1931-02-19

Publications (1)

Publication Number Publication Date
CH157250A true CH157250A (en) 1932-09-15

Family

ID=4408349

Family Applications (1)

Application Number Title Priority Date Filing Date
CH157250D CH157250A (en) 1931-02-19 1931-02-19 Process for the production of a vat dye preparation.

Country Status (1)

Country Link
CH (1) CH157250A (en)

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