CH118627A - Process for the preparation of a basic dye of the malachite green series. - Google Patents

Process for the preparation of a basic dye of the malachite green series.

Info

Publication number
CH118627A
CH118627A CH118627DA CH118627A CH 118627 A CH118627 A CH 118627A CH 118627D A CH118627D A CH 118627DA CH 118627 A CH118627 A CH 118627A
Authority
CH
Switzerland
Prior art keywords
preparation
basic dye
malachite green
dye
green series
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 CH118627A publication Critical patent/CH118627A/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
    • C09B11/00—Diaryl- or thriarylmethane dyes
    • C09B11/04—Diaryl- or thriarylmethane dyes derived from triarylmethanes, i.e. central C-atom is substituted by amino, cyano, alkyl
    • C09B11/10—Amino derivatives of triarylmethanes
    • C09B11/12—Amino derivatives of triarylmethanes without any OH group bound to an aryl nucleus
    • C09B11/14—Preparation from aromatic aldehydes, aromatic carboxylic acids or derivatives thereof and aromatic amines

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  <B>Verfahren zur</B> Darstellung eines     basischen    Farbstoffes der     3lalaehitgrünreihe.       Es wurde gefunden, dass man zu einem  neuen basischen     Farbstoff    der Malachit  grünreihe gelangt, wenn man 1     Molekül          2.3.5-Trichlorbenzaldehyd    mit 2 Molekülen       Diaethylanilin    kondensiert und die so ent  standene     Leukobase    oxydiert.  



  Trocken ist der Farbstoff ein violettes  Pulver, löslich in Wasser mit prachtvoll  blauer Farbe, und färbt Baumwolle, Seide  und Kunstseide in egalen und reinen blau  grünen Tönen an.     Bemerkenswert    ist seine  überraschend grosse Affinität zur Kunstseide.  <I>Beispiel:</I>  10,5 kg     2.3.5-Trichlorbenzaldehyd    vom  Schmelzpunkt 75 bis 760 und 16,5 kg       Diaethylanilin    werden mit 6 Liter Schwefel  säure 470     Be    30 Stunden bei 105 bis 1100  gerührt. Nach dem Übersättigen mit Soda  lösung wird die überschüssige Base mit  Dampf abgetrieben, und die in der Kälte  harte     Leukobase        abfiltriert    und getrocknet.

    Die erhaltene     Leukobase    wird in 200 Liter  Wasser mit 13,9 Liter Salzsäure 220 Bö  und 3 kg Eisessig     gelöat,    und die kalte  Lösung durch Zugeben von 31 kg Blei-         superoxydpaste        mit        49,4        %        Pb02        unter        Rühren     oxydiert.  



  Nach einer halben Stunde wird das Blei  mit 7,8 kg Natriumsulfat ausgefällt. Nach  Erwärmen auf 700 und Zugabe von so viel  heissem Wasser, dass aller     Farbstoff    in  Lösung geht, wird abgesaugt, und     aus    dem  Filtrat der     Farbstoff    mit Kochsalz aus  gesalzen. Er wird filtriert und getrocknet.



  <B> Process for </B> the representation of a basic dye of the 3lalaehitgrün series. It has been found that a new basic dye of the malachite green series is obtained if 1 molecule of 2,3,5-trichlorobenzaldehyde is condensed with 2 molecules of diaethylaniline and the leuco base thus formed is oxidized.



  When dry, the dye is a violet powder, soluble in water, with a splendid blue color, and stains cotton, silk and rayon in even and pure blue-green tones. Its surprisingly great affinity for artificial silk is remarkable. <I> Example: </I> 10.5 kg of 2,3,5-trichlorobenzaldehyde with a melting point of 75 to 760 and 16.5 kg of diaethylaniline are stirred with 6 liters of sulfuric acid 470 Be for 30 hours at 105 to 1100. After supersaturation with soda solution, the excess base is driven off with steam and the leuco base, which is hard in the cold, is filtered off and dried.

    The leuco base obtained is dissolved in 200 liters of water with 13.9 liters of hydrochloric acid 220 Bo and 3 kg of glacial acetic acid, and the cold solution is oxidized by adding 31 kg of lead superoxide paste with 49.4% PbO 2 while stirring.



  After half an hour, the lead is precipitated with 7.8 kg of sodium sulfate. After heating to 700 and adding enough hot water that all the dye dissolves, it is suctioned off and the dye is salted out of the filtrate with common salt. It is filtered and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen basischen Farbstoffes der Malachitgrünreihe, dadurch gekennzeichnet, dass man 1 Mole kül 2.3.5-Trichlorbenzaldehyd mit 2 Mole kül Diaethylanilin kondensiert und die so entstandene Leukobase oxydiert. Trocken ist der Farbstoff ein violettes Pulver, löslich in Wasser mit prachtvoll blauer Farbe, 'und färbt Baumwolle, Seide Kunstseide in egalen und reinen blaugrünen Tönen an. Bemerkenswert ist seine über raschend grosse Affinität zur Kunstseide. PATENT CLAIM: Process for the preparation of a new basic dye of the malachite green series, characterized in that 1 mole of 2.3.5-trichlorobenzaldehyde is condensed with 2 mole of diaethylaniline and the leuco base thus formed is oxidized. When dry, the dye is a violet powder, soluble in water, with a splendid blue color, and it stains cotton, silk and artificial silk in even and pure blue-green tones. Its surprisingly high affinity for artificial silk is remarkable.
CH118627D 1925-09-03 1925-09-03 Process for the preparation of a basic dye of the malachite green series. CH118627A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH118627T 1925-09-03
CH116995T 1925-09-03

Publications (1)

Publication Number Publication Date
CH118627A true CH118627A (en) 1927-01-17

Family

ID=25708771

Family Applications (1)

Application Number Title Priority Date Filing Date
CH118627D CH118627A (en) 1925-09-03 1925-09-03 Process for the preparation of a basic dye of the malachite green series.

Country Status (1)

Country Link
CH (1) CH118627A (en)

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