CH106444A - Process for the production of a new indigoid dye. - Google Patents

Process for the production of a new indigoid dye.

Info

Publication number
CH106444A
CH106444A CH106444DA CH106444A CH 106444 A CH106444 A CH 106444A CH 106444D A CH106444D A CH 106444DA CH 106444 A CH106444 A CH 106444A
Authority
CH
Switzerland
Prior art keywords
dye
production
indigoid dye
parts
green
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH106444A publication Critical patent/CH106444A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B7/00—Indigoid dyes
    • C09B7/10—Bis-thionapthene indigos

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

  

  Verfahren zur Herstellung eines     indigoiden    Farbstoffes.    Es -wurde gefunden, dass man     einen        indi-          goiden    Farbstoff     erhält,    wenn man das 2,3  '     Thionaphthisatin,    in     welchem    das     a-Keiton-          sauerstoffatom    durch ein     erbspaltbares        Ra.di-          kal,        wie    zum Beispiel Halogen oder eine       Anilgruppe,    ersetzt ist, mit     2,

  3-Naphththio-          indoxyl    kondensiert und das so erhaltene Pro  dukt     dibromiert.    Der Farbstoff stellt ein       grünblaues    Pulver dar, das sich in     Mono-          hydTat    mit grüner Farbe löst. Mit     Hydro-          sulfit    und Natronlauge bildet es eine orange  braune     Iiüpe,    aus der     Baumwolle    in rein  blauen Nuancen von sehr guter Echtheit     ,ge-          f        ärbt    wird.  



  <I>Beispiel:</I>  5000 Teile Sprit, 332     Teile        2-(4'-Dime-          thylamino)    -     a.nil    des 2,3 -     Thionaphthisatins     und 200 Teile     2,3-Naphththioindoxyl    werden  kurze Zeit am     Rückflusskühler    gekocht. Das  so erhaltene Produkt wird hierauf filtriert  und     getrocknet.     



  Zu einer Lösung von 352 Teilen Boom in  8000 Teilen Nitrobenzol werden 396 Teile  des so erhaltenen Farbstoffes eingetragen.    Nach mehrstündiger     Einwirkung    bei ge  wöhnlicher Temperatur wird unter     Rühren          langsam    .auf eine     Ölbadtemperatur    von 140'       bis   <B>150'</B> gehalten, bis das Brom verschwun  den ist. Nach dem Erkalten     wird    filtriert,  mit Alkohol gewaschen und der in guter Aus  beute     erhaltene    Farbstoff getrocknet.



  Process for the production of an indigoid dye. It has been found that an indigoid dye is obtained if the 2,3 'thionaphthisatin, in which the α-keitone oxygen atom is replaced by a cleavable radical, such as halogen or an anil group, is used , with 2,

  3-naphththio indoxyl condensed and the product thus obtained dibrominated. The dye is a green-blue powder that dissolves in monohydrate with a green color. With hydrosulphite and caustic soda, it forms an orange-brown lip from which cotton is dyed in pure blue shades of very good fastness.



  <I> Example: </I> 5000 parts of fuel, 332 parts of 2- (4'-dimethylamino) - a.nil des 2,3 - thionaphthisatin and 200 parts of 2,3-naphththioindoxyl are boiled for a short time on the reflux condenser. The product thus obtained is then filtered and dried.



  396 parts of the dye thus obtained are added to a solution of 352 parts of boom in 8000 parts of nitrobenzene. After several hours of exposure at normal temperature, the mixture is slowly maintained at an oil bath temperature of 140 'to 150' with stirring until the bromine has disappeared. After cooling, it is filtered, washed with alcohol and the dye obtained in good yield is dried.

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung eines indigoi- .den Farbstoffes, dadurch gekennzeichnet, d.ass man 2,3-Thionaphthisatin, in welchem das a Ketonsauerstoffatom durch ein erbspaltbares Radikal ersetzt ist, mit 2,3-Naphththioindo- xyl kondensiert und das so erhalAtene Produkt dibromiert. Der Farbstoff stellt ein grünblaues Pul ver dar, das sich in Monohydrat mit grüner Farbe löst. PATENT CLAIM Process for the production of an indigo .den dye, characterized in that 2,3-thionaphthisatin, in which the a ketone oxygen atom is replaced by a cleavable radical, is condensed with 2,3-naphththioindoxyl and the product obtained in this way dibrominated. The dye is a green-blue powder that dissolves in monohydrate with a green color. Mit Hydrosulfit und Natronlauge bildet es eine orgaugebraune Küpe, aus der Baumwolle in reinbl.a.uen Nuancen von sehr guter Ech''theit gefärbt wird. With hydrosulphite and caustic soda, it forms an organic-brown vat from which cotton is dyed in pure, fresh shades of very good authenticity.
CH106444D 1922-11-18 1923-07-18 Process for the production of a new indigoid dye. CH106444A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH100705T 1922-11-18
CH106444T 1923-07-18

Publications (1)

Publication Number Publication Date
CH106444A true CH106444A (en) 1924-09-01

Family

ID=25705859

Family Applications (1)

Application Number Title Priority Date Filing Date
CH106444D CH106444A (en) 1922-11-18 1923-07-18 Process for the production of a new indigoid dye.

Country Status (1)

Country Link
CH (1) CH106444A (en)

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