CH183902A - Process for the preparation of a carbocyanine dye. - Google Patents

Process for the preparation of a carbocyanine dye.

Info

Publication number
CH183902A
CH183902A CH183902DA CH183902A CH 183902 A CH183902 A CH 183902A CH 183902D A CH183902D A CH 183902DA CH 183902 A CH183902 A CH 183902A
Authority
CH
Switzerland
Prior art keywords
preparation
dye
carbocyanine dye
carbocyanine
iodoethylate
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 CH183902A publication Critical patent/CH183902A/en

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  • Coloring (AREA)
  • Plural Heterocyclic Compounds (AREA)

Description

  

  Verfahren zur Herstellung eines     Carbocyaninfarbstoffes.       Gegenstand des vorliegenden Zusatzpa  tentes ist ein Verfahren zur Herstellung eines       Carbocyaninfarbstoffes,    welches dadurch ge  kennzeichnet ist, dass man     5-11I'        ethogy-1.3.3-          triniethyl-2-methylen-indolin-(u-aldehyd    mit       5-Aletlioxy-2-methyl-berizselenazol-jodäthylat     kondensiert.

      <I>Beispiel</I>    23,1 Gewichtsteile     5-Metlioxy-1.3.3-tri-          metliyl-2-methylen-indolin-u)-aldehyd    und 38,2  Gewichtsteile     5-14fethoxy-2-methyl-benzselen-          azol-jodäthylat    (Selen =1- Stellung) werden  in 500 Gewichtsteilen wasserfreiem     Pyridin     gelöst und     11/z    Stunde unter     Rückdusskühlung     zum Sieden erhitzt, worauf die Farbstoff  bildung beendet ist. Nach Abtreiben des       Pyridins    wird der     Farbstoff    aus Alkohol  umgelöst. Er färbt Wolle und gebeizte Baum  wolle in violetten Tönen.  



  Der Farbstoff eignet sich zum Sensibili  sieren von photographischen Halogensilber  emulsionen.



  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 5-11I 'ethogy-1.3.3- triniethyl-2-methylene-indoline- (u-aldehyde with 5-aletlioxy-2- methyl berizselenazole iodoethylate condensed.

      <I> Example </I> 23.1 parts by weight of 5-metlioxy-1.3.3-trimethyl-2-methylene-indoline-u) aldehyde and 38.2 parts by weight of 5-14fethoxy-2-methyl-benzelene azole iodoethylate (selenium = 1 position) are dissolved in 500 parts by weight of anhydrous pyridine and heated to boiling for 11 / z hour under reflux cooling, whereupon the dye formation is complete. After the pyridine has been driven off, the dye is redissolved from alcohol. He dyes wool and stained cotton in shades of purple.



  The dye is suitable for sensitizing photographic silver halide emulsions.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Carbo- cyaninfarbstoffes, dadurch gekennzeichnet, dass man 5-illethoxy-1.3.3-trimethyl-2-me- thylen-indolin-co-aldehyd mit 5-Methoxy-2- inethyl-benzselenazol-jodäthylat kondensiert. Der so erhältliche Farbstoff- färbt Wolle und gebeizte Baumwolle in violetten Tönen. PATENT CLAIM: A process for the preparation of a carbocyanine dye, characterized in that 5-illethoxy-1,3.3-trimethyl-2-methylene-indoline-co-aldehyde is condensed with 5-methoxy-2-methylbenzelenazole iodoethylate. The dye thus obtainable dyes wool and stained cotton in purple tones. Er eignet sich auch zum Sensibilisieren von Halogensilberemulsionen. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass die Kondensation da durch bewirkt wird, dass man die Reaktions komponenten in wasserfreiem Pyridin löst und 11/2 Stunde unter Rückflusskühlung zum Sieden erhitzt. It is also suitable for sensitizing halogen silver emulsions. SUBSTANTIAL CLAIM: Process according to patent claim, characterized in that the condensation is brought about by the fact that the reaction components are dissolved in anhydrous pyridine and refluxed for 11/2 hours.
CH183902D 1933-05-16 1934-05-15 Process for the preparation of a carbocyanine dye. CH183902A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE183902X 1933-05-16
CH179452T 1934-05-15

Publications (1)

Publication Number Publication Date
CH183902A true CH183902A (en) 1936-04-30

Family

ID=25720305

Family Applications (1)

Application Number Title Priority Date Filing Date
CH183902D CH183902A (en) 1933-05-16 1934-05-15 Process for the preparation of a carbocyanine dye.

Country Status (1)

Country Link
CH (1) CH183902A (en)

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