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CH205069A - Process for the preparation of a polymethine dye. - Google Patents

Process for the preparation of a polymethine dye.

Info

Publication number
CH205069A
CH205069A CH205069DA CH205069A CH 205069 A CH205069 A CH 205069A CH 205069D A CH205069D A CH 205069DA CH 205069 A CH205069 A CH 205069A
Authority
CH
Switzerland
Prior art keywords
preparation
dye
polymethine dye
methylene
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 CH205069A publication Critical patent/CH205069A/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
    • C09B23/02—Methine or polymethine dyes, e.g. cyanine dyes the polymethine chain containing an odd number of >CH- or >C[alkyl]- groups
    • C09B23/06—Methine or polymethine dyes, e.g. cyanine dyes the polymethine chain containing an odd number of >CH- or >C[alkyl]- groups three >CH- groups, e.g. carbocyanines

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Indole Compounds (AREA)

Description

  

  Zusatzpatent zum Hauptpatent     Nr.    203144.    Verfahren zur Herstellung eines     Polymothinfarbstoffes.       Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Herstellung eines     Poly-          inethinfarbstoffes.    Das Verfahren ist dadurch  gekennzeichnet,     dass    man<B>1</B>     Mol        N-Methyl-2-          methylen-3-methylchinoxalin    mit<B>1</B>     Mol   <B>1. 3.</B>     3-          Trimethylindolin-2-methylen-co-aldehyd    kon  densiert.  



  Der Farbstoff fällt in glänzenden, bron  zierenden, grünen Kristallen an und ist gut  löslich in Wasser. Er besitzt eine sehr hohe  Farbstärke und färbt ein     rotstichiges    Blau.  <I>Beispiel:</I>  <B>1</B>     Mol        N-Methyl-2-methylen-3-methylchin-          oxalin    wird in     Es.gigsäureanhydrid    mit einem       Mol        1.3.3-Trimethylindolin-2-methylen-co-          aldehyd    bei<B>300 0 6</B> Stunden kondensiert.  Es entsteht ein asymmetrischer     Polymethin-          farbstoff.    Die Lösung wird auf Wasser aus-    getragen, vom Harz getrennt und mit Salz  gefällt.

   Der Farbstoff fällt in glänzenden,  bronzierenden, grünen Kristallen an und ist  gut löslich in Wasser. Er besitzt eine sehr  hohe     Farbstärke    und färbt ein     rotstiebiges     Blau.



  Additional patent to main patent no. 203144. Process for the production of a polymothin dye. The present patent relates to a process for the preparation of a polyethine dye. The method is characterized in that <B> 1 </B> moles of N-methyl-2-methylene-3-methylquinoxaline are mixed with <B> 1 </B> moles of <B> 1. 3. 3-trimethylindoline-2-methylene-co-aldehyde condenses.



  The dye is obtained in shiny, bronzing, green crystals and is readily soluble in water. It has a very high color strength and turns a reddish blue. <I> Example: </I> <B> 1 </B> mole of N-methyl-2-methylene-3-methylquinoxaline is mixed with one mole of 1,3.3-trimethylindoline-2-methylene-co in Es.gigsäureanhydrid - Aldehyde condenses at <B> 300 0 6 </B> hours. An asymmetrical polymethine dye is produced. The solution is poured onto water, separated from the resin and precipitated with salt.

   The dye is obtained in shiny, bronzing, green crystals and is easily soluble in water. It has a very high color strength and turns a reddish blue.

Claims (1)

<B>PATENTANSPRUCH:</B> Verfahren zur Herstellung eines Poly- methinfarbstoffes, dadurch gekennzeichnet, dass man<B>1</B> Mol N-Methyl-2-methylen-3-methyl- chinoxalin mit<B>1</B> Mol <B>1.</B> 3.3-Trimethylindolin- 2-methylen-co-aldehyd kondensiert. Der Farbstoff fällt in glänzenden, bron zierenden, grünen Kristallen an und ist gut löslich in Wasser. Er besitzt eine sehr hohe Farbstärke und färbt ein rotstichiges Blau. <B> PATENT CLAIM: </B> Process for producing a polymethine dye, characterized in that <B> 1 </B> mol of N-methyl-2-methylene-3-methylquinoxaline is mixed with <B> 1 < / B> Mol <B> 1. </B> 3,3-trimethylindoline-2-methylene-co-aldehyde condensed. The dye is obtained in shiny, bronzing, green crystals and is readily soluble in water. It has a very high color strength and turns a reddish blue.
CH205069D 1936-05-09 1937-04-30 Process for the preparation of a polymethine dye. CH205069A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE205069X 1936-05-09
CH203144T 1937-04-30

Publications (1)

Publication Number Publication Date
CH205069A true CH205069A (en) 1939-05-31

Family

ID=25723901

Family Applications (1)

Application Number Title Priority Date Filing Date
CH205069D CH205069A (en) 1936-05-09 1937-04-30 Process for the preparation of a polymethine dye.

Country Status (1)

Country Link
CH (1) CH205069A (en)

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