CH205074A - Process for the preparation of a polymethine dye. - Google Patents

Process for the preparation of a polymethine dye.

Info

Publication number
CH205074A
CH205074A CH205074DA CH205074A CH 205074 A CH205074 A CH 205074A CH 205074D A CH205074D A CH 205074DA CH 205074 A CH205074 A CH 205074A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
polymethine dye
mole
mol
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 CH205074A publication Critical patent/CH205074A/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
    • C09B23/00—Methine or polymethine dyes, e.g. cyanine dyes
    • C09B23/10—The polymethine chain containing an even number of >CH- groups
    • C09B23/105—The polymethine chain containing an even number of >CH- groups two >CH- groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Coloring (AREA)

Description

  

  <B>Zusatzpatent</B> zum     Hauptpatent    Nr. 203144.    Verfahren zur Herstellung eines     Polymethinfarbstoffes.       Gegenstand des vorliegenden Patentes     ist     ein Verfahren zur Herstellung eines     Polyme-          thinfarbstoffes.    Das Verfahren ist dadurch  gekennzeichnet, dass man 1     Mol        N-Phenyl-2-          methylen-3-methylchinoxalin    mit 1     Mol    N  Methyl-2-phenylindol-3-aldehyd kondensiert,  Der erhaltene Farbstoff fällt in leicht lös  lichen Kristallen an und färbt tannierte  Baumwolle,

       Acetatseide    und andere in violet  ten Tönen von einer bemerkenswerten Licht  echtheit.  



  <I>Beispiel:</I>  1     Mol        o-Aminodiphenylamin    wird mit  1     Mol        Diacetyl    vorsichtig verrührt, bis die  vorübergehend entstandene Flüssigkeit zu  einem Kristallkuchen des     N-Phenyl-2-methy-          len-3-methylchinoxalin    erstarrt ist.

   Nach Zu  gabe der zirka zehnfachen Menge Essigsäure  anhydrid, 1     Mol        N-Methyl-2-phenylindol-3-          aldehyd    und 1     Mol    wasserfreiem Zinkchlorid  wird langsam erwärmt und einige     Stunden     bei 70       gerührt.    Man giesst die     violette    Lö-         sung    auf Wasser, salzt     nach-Zersetzung    des       Essigsäureanhydrids    mit     Natriumchlorid    aus  und erhält den Farbstoff nach Abpressen und  Trocknen in braunen, leicht löslichen Kristal  len, die tannierte Baumwolle,

       Acetatseide     und andere in violetten Tönen von einer       bemerkenswerten    Lichtechtheit anfärben.



  <B> Additional patent </B> to main patent no. 203144. Process for the production of a polymethine dye. The subject of the present patent is a process for the production of a polymer thin dye. The process is characterized in that 1 mole of N-phenyl-2-methylene-3-methylquinoxaline is condensed with 1 mole of N-methyl-2-phenylindole-3-aldehyde. The dye obtained falls in easily soluble crystals and dyes tannin cotton ,

       Acetate silk and others in violet tones with a remarkable lightfastness.



  <I> Example: </I> 1 mol of o-aminodiphenylamine is carefully stirred with 1 mol of diacetyl until the liquid that has temporarily formed has solidified into a crystal cake of N-phenyl-2-methylene-3-methylquinoxaline.

   After adding about ten times the amount of acetic anhydride, 1 mol of N-methyl-2-phenylindole-3-aldehyde and 1 mol of anhydrous zinc chloride, the mixture is slowly heated and stirred at 70 for a few hours. The violet solution is poured into water, after decomposition of the acetic anhydride is salted out with sodium chloride and the dye is obtained after pressing and drying in brown, easily soluble crystals, the tannic cotton,

       Dye acetate silk and others in violet shades of remarkable lightfastness.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Poly- methinfarbstoffes, dadurch gekennzeichnet, dass man 1 Mol N-Phenyl-2-methylen-3- methylchinoxalin mit 1 Mol N-Methyl-2- phenylindol-3-aldehyd kondensiert. Der erhaltene Farbstoff fällt in leicht lös lichen Kristallen an und färbt tannierte Baumwolle, Acetatseide und andere in vio letten Tönen von einer bemerkenswerten Lichtechtheit. Claim: Process for the production of a polymethine dye, characterized in that 1 mole of N-phenyl-2-methylene-3-methylquinoxaline is condensed with 1 mole of N-methyl-2-phenylindole-3-aldehyde. The dye obtained is obtained in easily soluble crystals and dyes tannin cotton, acetate silk and others in violet shades of remarkable lightfastness.
CH205074D 1936-05-09 1937-04-30 Process for the preparation of a polymethine dye. CH205074A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE205074X 1936-05-09
CH203144T 1937-04-30

Publications (1)

Publication Number Publication Date
CH205074A true CH205074A (en) 1939-05-31

Family

ID=25723906

Family Applications (1)

Application Number Title Priority Date Filing Date
CH205074D CH205074A (en) 1936-05-09 1937-04-30 Process for the preparation of a polymethine dye.

Country Status (1)

Country Link
CH (1) CH205074A (en)

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