CH108219A - Process for the production of a vat dye. - Google Patents

Process for the production of a vat dye.

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Publication number
CH108219A
CH108219A CH108219DA CH108219A CH 108219 A CH108219 A CH 108219A CH 108219D A CH108219D A CH 108219DA CH 108219 A CH108219 A CH 108219A
Authority
CH
Switzerland
Prior art keywords
production
dye
vat dye
vat
naphthoxythiophene
Prior art date
Application number
Other languages
German (de)
Inventor
Farbwerke Vorm Meiste Bruening
Original Assignee
Hoechst 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 Hoechst Ag filed Critical Hoechst Ag
Publication of CH108219A publication Critical patent/CH108219A/en

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Description

  

  Verfahren zur Herstellung eines     Itüpenfarbstofes.       Es wurde gefunden, dass man einen     neuen          Küpenfarbstoff    erhält, wenn man den 2.     3-          Naphthoxythiophen-2-indolinUigo    mit     chlorie-          renden    Mitteln behandelt.

   Man kann hierbei  so verfahren, dass man das Kondensations  produkt aus     2.3-Naphthoxythiophen    (5.6  Benzo-2 .     3-diketodilhydro-    (1)     -thionaphthen)     und,     a-Isatinanilid    oder     a-Isatinchlorid,    oder  das     Kondensationsprodukt    aus     2.3-Naph-          thoxythiophen    und     Chlor-a-Isatinanilid        bezw.          Chlar-a-Isatinchloricd    mit Chlor oder chlor  abspaltenden     Mitteln    behandelt.

   Der so er-,       haltene    Farbstoff bildet ein blaues Pulver,  das sich in Monohydrat mit olivgrüner und  in Nitrobenzol mit roter Farbe löst. Mit       Hydrosulfit    und Natronlauge bildet es eine  gelbbraune     Küpe,    aus der Baumwolle in ech  ten blauen Tönen angefärbt wird.  



  <I>Beispiel:</I>  66 Teile 2.     3-Naphthoxythioph@en-2-indol-          indigo    werden in 600 Teilen Nitrobenzol sus  pendiert, auf 140   angeheizt und tropfen  weise mit 45 Teilen     Sulfurylchlorid,    das in    100 Teilen Nitrobenzol gelöst, ist, versetzt.  Nachdem     alles        Sulfurylchlorid        zugetropft     ist, erhitzt man noch weiter, bis die     iSalz-          säureentwicklung    zu Ende ist. Nach dem  Erkalten wird filtriert und mit Alkohol ge  waschen.



  Process for the preparation of an Itupen dye. It has been found that a new vat dye is obtained if the 2,3-naphthoxythiophene-2-indoline uigo is treated with chlorinating agents.

   The procedure here is to use the condensation product of 2,3-naphthoxythiophene (5.6 benzo-2,3-diketodilhydro- (1) -thionaphthene) and α-isatin anilide or α-isatin chloride, or the condensation product of 2,3-naphthoxythiophene and chlor-a-isatinanilide respectively. Chlar-a-Isatinchloricd treated with chlorine or chlorine-releasing agents.

   The dye obtained in this way forms a blue powder that dissolves in monohydrate with an olive-green color and in nitrobenzene with a red color. With hydrosulphite and caustic soda, it forms a yellow-brown vat from which cotton is dyed in real blue tones.



  <I> Example: </I> 66 parts of 2. 3-Naphthoxythioph @ en-2-indol- indigo are suspended in 600 parts of nitrobenzene, heated to 140 and added dropwise with 45 parts of sulfuryl chloride, which is dissolved in 100 parts of nitrobenzene, is offset. After all the sulfuryl chloride has been added dropwise, the heating is continued until the evolution of hydrochloric acid has ended. After cooling, it is filtered and washed with alcohol.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Küpenfarbstoffes, dadurch gekennzeichnet, dass man den 2.3-Naphthoxythiophen-2-indol- indigo mit chlorierenden Mitteln behandelt. Der so erhaltene Farbstoff bildet ein dunkel blaues Pulver, das sich in Monohydrat mit olivgrüner und in Nitrobenzol mit roter Farbe löst. Mit Natronlauge und Hydrosul- fit entsteht eine gelbbraune Küpe, aus der Baumwolle in echten, blauen Tönen ange färbt wird. PATENT CLAIM: Process for the production of a new vat dye, characterized in that the 2,3-naphthoxythiophene-2-indole indigo is treated with chlorinating agents. The dye thus obtained forms a dark blue powder which dissolves in monohydrate with an olive green color and in nitrobenzene with a red color. With caustic soda and hydrosulfate, a yellow-brown vat is created from which cotton is dyed in real, blue tones.
CH108219D 1923-01-27 1924-01-19 Process for the production of a vat dye. CH108219A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE108219X 1923-01-27
CH107857T 1924-01-19

Publications (1)

Publication Number Publication Date
CH108219A true CH108219A (en) 1924-12-16

Family

ID=25707289

Family Applications (1)

Application Number Title Priority Date Filing Date
CH108219D CH108219A (en) 1923-01-27 1924-01-19 Process for the production of a vat dye.

Country Status (1)

Country Link
CH (1) CH108219A (en)

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