CH106443A - Process for the production of a new indigoid dye. - Google Patents

Process for the production of a new indigoid dye.

Info

Publication number
CH106443A
CH106443A CH106443DA CH106443A CH 106443 A CH106443 A CH 106443A CH 106443D A CH106443D A CH 106443DA CH 106443 A CH106443 A CH 106443A
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 CH106443A publication Critical patent/CH106443A/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,     da.ss    man einen     indi-          goiden    Farbstoff erhält, wenn man das     2,3-          T'hion,aphthisatin,    in welchem das     a-Keton-          sauerstoffatom    durch ein     abspaltba.res    Radi  kal, wie zum Beispiel Halogen oder eine       Anilgruppe,    ersetzt ist, mit     2,

  3-Naphththio-          indoxyl        kondensiert    und das so erhaltene  Produkt     monobromiert.    Der Farbstoff stellt  ein grünblaues Pulver dar, das sich in Mono  hydrat mit grüner Farbe löst. Mit     Hydrosul-          fit    und Natronlauge bildet es eine orange       Küpe    und färbt daraus     Baiunwolle    in echten  Farbtönen, die blauer und reiner sind als die       mittelst    des     unbromierten    Farbstoffes her  stellbaren.  



       Beispiel:     5000 Teile Sprit, 332 Teile     2-(d'-Dime-          thyla.mialo)-a.nil    des 2,3 -     Thionaphthisatins     und 200 Teile     2,3-Naphththioindoxyl    werden  kurze Zeit am     Rückflusskühler    gekocht. Der  gebildete Farbstoff wird hierauf filtriert und       geltrocknet.     



  In eine Lösung von 176 Teilen Brom in  8000 Teilen Nitrobenzol werden 396 Teile  des so erhaltenen Farbstoffes eingetragen.  Nach mehrstündiger Einwirkung bei gPwöhn-         licher        Temperatur        wird    unter Rühren     lana-          saan    auf eine     Ölbadtemperatur    von 125   er  wärmt und so lange bei 125     bis   <B>135'</B> gehal  ten, bis das Brom verschwunden ist.     Nach     dem Erkalten wird     filtriert,    mit Alkohol ge  waschen und der in guter     Ausbeute    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-thione, aphthisatin, in which the a-ketone oxygen atom is removed by a radical, such as halogen or a Anil group, is replaced with 2,

  3-naphththioindoxyl condensed and the product thus obtained monobrominated. The dye is a green-blue powder that dissolves in monohydrate with a green color. With hydrosulfite and caustic soda, it forms an orange vat and dyes cotton wool in real shades that are bluer and purer than those that can be produced by means of the unbrominated dye.



       Example: 5000 parts of fuel, 332 parts of 2- (d'-Dimethyla.mialo) -a.nil des 2,3-thionaphthisatin and 200 parts of 2,3-naphthioindoxyl are boiled for a short time on the reflux condenser. The dye formed is then filtered and gel-dried.



  396 parts of the dye thus obtained are introduced into a solution of 176 parts of bromine in 8000 parts of nitrobenzene. After several hours of exposure at normal temperature, the lanasaan is heated to an oil bath temperature of 125 while stirring and held at 125 to 135 '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, da.ss man 2,3-Thionaphthisatin, in welchem das a-Ketonsauerstoffatom durch ein abspalt- b; PATENT CLAIM: A process for the production of an indigoid dye, characterized in that 2,3-thionaphthisatin, in which the a-ketone oxygen atom is split off by a b; ares Radikal ersetzt ist, mit 2,3-Naphth'thio- ind@oxyl kondensiert und das so erhaltene Produkt monobromiert. Der Farbtoff stellt ein grünblaues Pulver dar, dias sieh in Monohydrat mit grüner Farbe löst. ares radical is replaced, condensed with 2,3-Naphth'thio- ind @ oxyl and the product thus obtained is monobrominated. The dye is a green-blue powder that dissolves in monohydrate with a green color. Mit Hydrosulfit und Natronlauge bil det es eine orange Küpe und färbt daraus Baumwolle in echten Farbtönen, die blauer und reiner sind als die mittelst des unbro- mierten Farbstoffes herstellbaren. With hydrosulphite and caustic soda, it forms an orange vat and dyes cotton in real shades that are bluer and purer than those that can be produced using the unbrominated dye.
CH106443D 1922-11-18 1923-07-18 Process for the production of a new indigoid dye. CH106443A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH100705T 1922-11-18
CH106443T 1923-07-18

Publications (1)

Publication Number Publication Date
CH106443A true CH106443A (en) 1924-09-01

Family

ID=25705858

Family Applications (1)

Application Number Title Priority Date Filing Date
CH106443D CH106443A (en) 1922-11-18 1923-07-18 Process for the production of a new indigoid dye.

Country Status (1)

Country Link
CH (1) CH106443A (en)

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