CH123457A - Process for the preparation of a vat dye from 4-methyl-5. 6-dichloro-3-oxy-1-thionaphtene. - Google Patents

Process for the preparation of a vat dye from 4-methyl-5. 6-dichloro-3-oxy-1-thionaphtene.

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Publication number
CH123457A
CH123457A CH123457DA CH123457A CH 123457 A CH123457 A CH 123457A CH 123457D A CH123457D A CH 123457DA CH 123457 A CH123457 A CH 123457A
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CH
Switzerland
Prior art keywords
oxy
dichloro
methyl
preparation
thionaphtene
Prior art date
Application number
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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 CH123457A publication Critical patent/CH123457A/en

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Description

  

  Verfahren zur Darstellung eines     IZüpenfarbstoffes    aus     4-Nethyl-ö.        6-diehlor-3-oay-          1-thionaphten.       Gegenstand dieses     Zusatzpatentes    ist ein  Verfahren zur Darstellung eines Farbstoffes,  durch Kondensation eines reaktionsfähigen       2-Derivates    des     4-Methyl-5    .     6-dichlor-3-oxy-          1-thionaphtens    mit     4-Brom-3    .     2-(3'-oxy-1'-          i;hiophen)-naphtalin.     
EMI0001.0013     
    <I>Beispiel:

  </I>  24 Gewichtsteile     4-Methyl-5    .     6-dichlor-3-          oxythionaphten    werden in Sprit und Alkali  gelöst und mit einer alkoholischen Lösung  von 25 Gewichtsteilen     4-Nitroso-dimethyl-          anilin    versetzt. Das     4-Methyl-5    .     6-dichlor-          2    .     3-dihydro-3-ketothionaphten-    2 - (4'     -dime-          thylamino)-anil    scheidet sich nach kurzem  Rühren vollständig ab.

   Es wird abgesaugt  und mit 28 Gewichtsteilen     4-Brom-3.        2-(3'-          oxy-1'-thiophen)-naphtalin    und 400 Ge  wichtsteilen Eisessig mehrere Stunden ge-    kocht. Nach dem Erkalten saugt man ab und  wäscht neutral.  



  Der Farbstoff löst sich in     Nitrobenzol     mit blaustichig roter Farbe und violetter  Fluoreszenz, gibt eine gelbrote     Küpe    und  färbt Baumwolle in violetten Tönen von be  sonders     guten    Echtheitseigenschaften.



  Process for the preparation of an IZüpen dye from 4-Nethyl-ö. 6-diehlor-3-oay-1-thionaphten. The subject of this additional patent is a process for the preparation of a dye by condensation of a reactive 2-derivative of 4-methyl-5. 6-dichloro-3-oxy-1-thionaphthene with 4-bromo-3. 2- (3'-oxy-1'- i; hiophene) naphthalene.
EMI0001.0013
    <I> example:

  </I> 24 parts by weight of 4-methyl-5. 6-dichloro-3-oxythionaphthene are dissolved in fuel and alkali and mixed with an alcoholic solution of 25 parts by weight of 4-nitroso-dimethylaniline. The 4-methyl-5. 6-dichloro-2. 3-dihydro-3-ketothionaphten- 2 - (4 '-dimethylamino) -anil separates out completely after brief stirring.

   It is filtered off and with 28 parts by weight of 4-bromo-3. 2- (3'-oxy-1'-thiophene) naphthalene and 400 parts by weight of glacial acetic acid boiled for several hours. After cooling, it is suctioned off and washed neutral.



  The dye dissolves in nitrobenzene with a bluish red color and violet fluorescence, gives a yellow-red vat and dyes cotton in violet shades with particularly good fastness properties.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Küpen- farbstoffes, dadurch gekennzeichnet, daB ein reaktionsfähiges 2-Derivat des 4-Methyl- 5. 6-dichlor-3-oxy-l-thionaphtens mit 4-Brom- 3 . 2-(3'-oxy-1'-thiophen)-naphtalin konden siert werden. Der Farbstoff löst sich in Nitrobenzol mit blaustichig roter Farbe und violetter Fluoreszenz, gibt eine gelbrote Küpe und färbt Baumwolle in violetten Tönen von be sonders guten Echtheitseigenschaften. PATENT CLAIM: Process for the preparation of a vat dye, characterized in that a reactive 2-derivative of 4-methyl-5, 6-dichloro-3-oxy-1-thionaphthene with 4-bromo-3. 2- (3'-oxy-1'-thiophene) -naphthalene are condensed. The dye dissolves in nitrobenzene with a bluish red color and violet fluorescence, gives a yellow-red vat and dyes cotton in violet shades with particularly good fastness properties.
CH123457D 1925-05-06 1926-05-03 Process for the preparation of a vat dye from 4-methyl-5. 6-dichloro-3-oxy-1-thionaphtene. CH123457A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE123457X 1925-05-06
CH120807T 1926-05-03

Publications (1)

Publication Number Publication Date
CH123457A true CH123457A (en) 1927-11-16

Family

ID=25709578

Family Applications (1)

Application Number Title Priority Date Filing Date
CH123457D CH123457A (en) 1925-05-06 1926-05-03 Process for the preparation of a vat dye from 4-methyl-5. 6-dichloro-3-oxy-1-thionaphtene.

Country Status (1)

Country Link
CH (1) CH123457A (en)

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