CH223008A - Process for the preparation of a water-soluble basic dye. - Google Patents

Process for the preparation of a water-soluble basic dye.

Info

Publication number
CH223008A
CH223008A CH223008DA CH223008A CH 223008 A CH223008 A CH 223008A CH 223008D A CH223008D A CH 223008DA CH 223008 A CH223008 A CH 223008A
Authority
CH
Switzerland
Prior art keywords
water
preparation
basic dye
soluble basic
dye
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 CH223008A publication Critical patent/CH223008A/en

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Description

  

      Verfahren    zur Herstellung eines wasserlöslichen basischen     Farbstoffes.       Gegenstand vorliegender Erfindung ist  ein Verfahren zur Herstellung eines wasser  löslichen basischen Farbstoffes. Das Verfah  ren besteht darin, dass man     p-Diäthylamino-          benzaldehyd    mit     5-Brom-1,3,3-trimethyl-2-          methylenindolin    umsetzt.  



  Der Farbstoff stellt ein gut kristallisier  tes Pulver dar, das sich in Wasser und Al  kohol gut löst und tannierte Baumwolle und       Acetatseide    in rötlich violetten Tönen färbt.  <I>Beispiel:</I>  8,9 Gewichtsteile     p-Diäthylaminobenzalde-          hyd    und 12,6 Gewichtsteile     5-Brom-1,3,3-          trimethyl-2-methylenindolin    werden in Eis  essig gelöst und einige Stunden auf 100    erhitzt. Man giesst die Lösung in Wasser  und salzt aus. Das so erhaltene Rohprodukt  wird erneut in heissem Wasser gelöst, von  unlöslichen harzigen Bestandteilen abge  trennt und     ausgesalzen.    Man erhält den    Farbstoff schon kristallinisch.

   Er ist in  Wasser     und    Alkohol gut löslich. Tannierte  Baumwolle und     Acetatseide    färbt er in röt  lich violetten Tönen an. Das Umsetzungs  produkt mit     Phosphor-Wolfram-Molybdän-          säure    liefert einen besonders klaren,     licht-          und        spritechten        Farblack.  



      Process for the preparation of a water-soluble basic dye. The present invention relates to a process for the preparation of a water-soluble basic dye. The process consists in reacting p-diethylaminobenzaldehyde with 5-bromo-1,3,3-trimethyl-2-methyleneindoline.



  The dye is a well-crystallized powder that dissolves well in water and alcohol and dyes tannic cotton and acetate silk in reddish purple tones. <I> Example: </I> 8.9 parts by weight of p-diethylaminobenzaldehyde and 12.6 parts by weight of 5-bromo-1,3,3-trimethyl-2-methyleneindoline are dissolved in glacial acetic acid and heated to 100 for a few hours. The solution is poured into water and salted out. The crude product thus obtained is redissolved in hot water, separated from insoluble resinous constituents and salted out. The dye is obtained in crystalline form.

   It is easily soluble in water and alcohol. He dyes tannic cotton and acetate silk in reddish purple tones. The reaction product with phosphorus-tungsten-molybdic acid provides a particularly clear, light- and spirit-fast colored lacquer.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines wasser löslichen basischen Farbstoffes, darin be stehend, dass man p-Diäthylaminobenzalde- hyd mit 5-Brom-1,3,3-trimethyl-2-methylen- indolin umsetzt. Der Farbstoff stellt ein gut kristallisier tes Pulver dar, das sich in Wasser und Al kohol gut löst und tannierte Baumwolle und Acetatseide in rötlich violetten Tönen färbt. PATENT CLAIM: Process for the production of a water-soluble basic dye, which consists of reacting p-diethylaminobenzaldehyde with 5-bromo-1,3,3-trimethyl-2-methylene-indoline. The dye is a well-crystallized powder that dissolves well in water and alcohol and dyes tannic cotton and acetate silk in reddish purple tones.
CH223008D 1939-05-05 1940-04-19 Process for the preparation of a water-soluble basic dye. CH223008A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE223008X 1939-05-05
CH215148T 1939-07-15

Publications (1)

Publication Number Publication Date
CH223008A true CH223008A (en) 1942-08-15

Family

ID=25725694

Family Applications (1)

Application Number Title Priority Date Filing Date
CH223008D CH223008A (en) 1939-05-05 1940-04-19 Process for the preparation of a water-soluble basic dye.

Country Status (1)

Country Link
CH (1) CH223008A (en)

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