CH184492A - Process for the preparation of a carbocyanine dye. - Google Patents

Process for the preparation of a carbocyanine dye.

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Publication number
CH184492A
CH184492A CH184492DA CH184492A CH 184492 A CH184492 A CH 184492A CH 184492D A CH184492D A CH 184492DA CH 184492 A CH184492 A CH 184492A
Authority
CH
Switzerland
Prior art keywords
dye
condensed
preparation
carbocyanine dye
carbocyanine
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 CH184492A publication Critical patent/CH184492A/en

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Description

  

  Verfahren zur Herstellung eines     Carbocyaninfarbstoffes.       Gegenstand des vorliegenden Zusatzpaten  tes ist ein Verfahren zur Herstellung eines       Carbocyaninfarbstoffes,    welches dadurch ge  kennzeichnet ist, dass man     1.3.3-Tricnethyl-          5-methoxyindolin-2-methyleci-m-aldehyd    mit       Tetrahydrochinolin    in Gegenwart eines Kon  densationsmittels, welches Salzsäure zu liefern  vermag, kondensiert.  



  <I>Beispiel:</I>  23     Gewichtsteile    1 . 3 . 3 -     Trimethyl    - 5     -          methoxyindolin-2-methylen-co-aldehyd    werden  mit 13,3 Gewichtsteilen     Tetrahydrochinolin     in 100 Gewichtsteilen Benzol gelöst und durch       Zutropfen    von 6 Gewichtsteilen     Phosphoroxy-          chlorid    bei etwa 15-20   C bis zur     Farb-          stoffbildung    kondensiert.

   Man erhält einen       Farbstoff,    der aus Wasser in goldglänzen  den     Nädelchen    kristallisiert und tannierte  Baumwolle in leuchtend gelben     Tönen    von  ausgezeichneter Lichtechtheit färbt.



  Process for the preparation of a carbocyanine dye. The subject of the present additional patent is a process for the production of a carbocyanine dye, which is characterized in that 1.3.3-tricnethyl-5-methoxyindoline-2-methyleci-m-aldehyde with tetrahydroquinoline in the presence of a condensation agent which hydrochloric acid is to be delivered capable of condensing.



  <I> Example: </I> 23 parts by weight 1. 3. 3 - Trimethyl - 5 - methoxyindoline-2-methylene-co-aldehyde are dissolved with 13.3 parts by weight of tetrahydroquinoline in 100 parts by weight of benzene and condensed by adding 6 parts by weight of phosphorus oxychloride at about 15-20 ° C. until the dye is formed.

   A dye is obtained which crystallizes the needles shimmering gold from water and dyes tannic cotton in bright yellow shades of excellent lightfastness.

Claims (1)

<B>PATENTANSPRUCH:</B> Verfahren zur Herstellung eines Carbocy- aninfarbstoffes, welches dadurch gekennzeich net ist, dass man 1.3. 3-Trimethyl-5-methoxy- indolin-2-methylen-co-aldehyd mit Tetrahydro- chinolin in Gegenwart eines Kondensations mittels, welches Salzsäure zu liefern vermag, kondensiert. Der so erhältliche Farbstoff kristallisiert aus Wasser in goldglänzenden Nädelchen und färbt tannierte Baumwolle in leuchtend gelben. Tönen von ausgezeichneter Lichtechtheit. <B> PATENT CLAIM: </B> Process for the production of a carbocyanine dye, which is characterized in that 1.3. 3-Trimethyl-5-methoxy-indoline-2-methylene-co-aldehyde is condensed with tetrahydroquinoline in the presence of a condensation agent which is capable of delivering hydrochloric acid. The dye obtainable in this way crystallizes from water in shiny golden needles and dyes tannic cotton in bright yellow. Shades of excellent lightfastness. UNTERANSPRUCH Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die ReaktioDskom- ponenten in Benzol löst und durch Zutropfen von Pliosphoroxychlorid bei etwa 15-20 C bis zur Farbstoffbildung kondensiert. SUBSTANTIAL CLAIM Process according to patent claim, characterized in that the reaction components are dissolved in benzene and condensed by adding dropwise phosphorus oxychloride at about 15-20 ° C. until the dye is formed.
CH184492D 1933-12-16 1934-12-14 Process for the preparation of a carbocyanine dye. CH184492A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE184492X 1933-12-16
CH179452T 1934-05-15

Publications (1)

Publication Number Publication Date
CH184492A true CH184492A (en) 1936-05-31

Family

ID=25720314

Family Applications (1)

Application Number Title Priority Date Filing Date
CH184492D CH184492A (en) 1933-12-16 1934-12-14 Process for the preparation of a carbocyanine dye.

Country Status (1)

Country Link
CH (1) CH184492A (en)

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