CH117480A - Process for the preparation of an alkali-like green-blue dye of the triphenylmethane series. - Google Patents

Process for the preparation of an alkali-like green-blue dye of the triphenylmethane series.

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Publication number
CH117480A
CH117480A CH117480DA CH117480A CH 117480 A CH117480 A CH 117480A CH 117480D A CH117480D A CH 117480DA CH 117480 A CH117480 A CH 117480A
Authority
CH
Switzerland
Prior art keywords
dye
green
blue
alkali
preparation
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 CH117480A publication Critical patent/CH117480A/en

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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

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

  

  Verfahren zur     Darstellung    eines     alkallechten    grünblauen     Farbstoffes     oder     Triphenylmethanreihe.       Es wurde gefunden, dass man einen     al-          kaliechten    grünblauen     Farbstoff    der     Triphe-          nylmethanreihe    erhält, wenn mau 1     Mol.          o-Siilfobenzaldehyd    mit 2     Mol.        2.6-Dichlor-          sulfobenzyläthylanilin    kondensiert und das  entstandene Kondensationsprodukt oxydiert.  



  Trocken ist der     Farbstoff,    der im Zu  stand der freien Säure die     Di-2.6-Dichlor-          sulfobenzy        ldiäthyldianiinotriphenylkarbinol-o-          sulfosäure    ist, ein metallisch glänzendes blaues  Pulver, das in Wasser leicht mit schöner  blauer     Farbe    löslich ist, und färbt Wolle in  blaugrünen Tönen von besonderer Reinheit  und Klarheit, wobei das Färbebad ausgiebiger  als bei dem entsprechenden chlorfreien Farb  stoff erschöpft wird.  



       Beispiel:     Das in bekannter Weise aus 2.     6-Dichlor-          benzylchlorid    und     141=onoäthylanilin    erhaltene       2.6-D.ichlorbenzyläthylanilin    wird     sulfiert,     indem man 1 Teil der Base in 1-2 Teilen       .Schwefelsäuremonohydrat    löst und in der  Kälte so lange mit zwei Äquivalenten     SOs       in Form von     Oleum    rührt, bis     Alkalilöslich-          keit    eingetreten ist. Auf diese Weise tritt  eine.     Sulfogruppe    in den     Benzylrest    ein.

   Die  neue     Sulfosäure    stellt ein weisses Pulver dar  und ist in Wasser sehr schwer, in Alkalien  leicht löslich. 72 Teile der     Sulfosäure    -wer  den mit 23 Teilen     o-Sulfobenzaldehyd    (90     o/oig)     in wässeriger Lösung 24 Stunden unter Rück  fluss gekocht und die entstandene     Leukosäure     in saurer Lösung mit     Bleisuperoxyd    zum       Farbstoff    oxydiert. Nach dem Abscheiden des  Bleis wird der     Farbstoff        ausgesalzen    und ge  trocknet.



  Process for the preparation of an alkali-fast green-blue dye or triphenylmethane series. It has been found that an alkali-like green-blue dye of the triphenylmethane series is obtained if 1 mol of o-silfobenzaldehyde is condensed with 2 mol of 2,6-dichlorosulfobenzylethylaniline and the condensation product formed is oxidized.



  The dry dye is the di-2,6-dichlorosulfobenzy ldiäthyldianiinotriphenylkarbinol-o-sulfonic acid in the state of the free acid, a metallic, shiny blue powder that is easily soluble in water with a beautiful blue color, and dyes wool in blue-green tones of particular purity and clarity, whereby the dye bath is exhausted more extensively than with the corresponding chlorine-free dye.



       Example: The 2.6-dichlorobenzylethylaniline obtained in a known manner from 2. 6-dichlorobenzyl chloride and 141 = onoethylaniline is sulfated by dissolving 1 part of the base in 1-2 parts .Sulfuric acid monohydrate and in the cold with two equivalents Stir SOs in the form of oleum until alkali solubility has occurred. This way one occurs. Sulfo group into the benzyl radical.

   The new sulfonic acid is a white powder and is very difficult in water and easily soluble in alkalis. 72 parts of the sulfonic acid -wer the boiled with 23 parts of o-sulfobenzaldehyde (90%) in aqueous solution for 24 hours under reflux and the resulting leuco acid is oxidized in acidic solution with lead peroxide to the dye. After the lead has been deposited, the dye is salted out and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines alkali- echten grünblauen Farbstoffes der Triphenyl- methanreihe, dadurch gekennzeichnet, dass man 1 Mol. o-Sulfobenzaldehyd mit 2 Mol. 2.6-Dichlorsulfobenzyläthylanilin kondensiert und- das entstandene Kondensationsprodukt oxydiert. PATENT CLAIM: Process for the preparation of an alkali-true green-blue dye of the triphenyl methane series, characterized in that 1 mol. O-sulfobenzaldehyde is condensed with 2 mol. 2,6-dichlorosulfobenzylethylaniline and the condensation product formed is oxidized. Trocken ist der Farbstoff, der im Zu stand der freien Säure die Di-2.6-dichlor- sulfobenzyldiäthyldiaminotriphenylkarbinol- o- sulfosäure ist, ein metallisch glänzendes blaues Pulver, das in Wasser leicht mit schöner blauer Farbe löslich ist, und färbt Wolle in blaugrünen Tönen von besonderer Reinheit und Klarheit, wobei das Färbebad ausgiebiger als bei dem entsprechenden chlorfreien Farb stoff erschöpft wird. The dry dye, which in the state of the free acid is the di-2,6-dichloro-sulfobenzyldiethyldiaminotriphenylcarbinol-o-sulfonic acid, is a metallic, shiny blue powder that is easily soluble in water with a beautiful blue color, and dyes wool in blue-green shades of special purity and clarity, whereby the dye bath is exhausted more extensively than with the corresponding chlorine-free dye.
CH117480D 1925-05-25 1925-05-25 Process for the preparation of an alkali-like green-blue dye of the triphenylmethane series. CH117480A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH117480T 1925-05-25
CH116156T 1926-08-02

Publications (1)

Publication Number Publication Date
CH117480A true CH117480A (en) 1926-11-01

Family

ID=25708655

Family Applications (1)

Application Number Title Priority Date Filing Date
CH117480D CH117480A (en) 1925-05-25 1925-05-25 Process for the preparation of an alkali-like green-blue dye of the triphenylmethane series.

Country Status (1)

Country Link
CH (1) CH117480A (en)

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