CH156018A - Process for the preparation of a blue dye of the diaminotriphenylmethane series. - Google Patents

Process for the preparation of a blue dye of the diaminotriphenylmethane series.

Info

Publication number
CH156018A
CH156018A CH156018DA CH156018A CH 156018 A CH156018 A CH 156018A CH 156018D A CH156018D A CH 156018DA CH 156018 A CH156018 A CH 156018A
Authority
CH
Switzerland
Prior art keywords
series
diaminotriphenylmethane
preparation
blue dye
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 CH156018A publication Critical patent/CH156018A/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

  

      Zusatzpatent    zum Hauptpatent Nr. 136390.         Verfaln en        zur    Darstellung eines blauen     Farbstoffes    der     Diaminotriplienylmethanreihe.       Im Hauptpatent wird ein blauer Farb  stoff beschrieben, der durch Kondensation  von 1     Mol.        Benzaldehyd-2    .     4-disulfosäure    mit  2     Mol.    2.     1'-Methylpropylamino-l-methylben-          zol    und Oxydation der     entstandenen        Leuko-          verbindung    erhalten wird.  



  Einen analogen     Farbstoff    mit den gleichen  wertvollen Eigenschaften erhält man, wenn  man 1     Mol.        Benzaldehyd-2.4-disulfosäure          rillt   <B>2</B>     Mol.        2-Mono-n-butylamino-l-methylben-          zol    kondensiert und die     Leukoverbindung     dann oxydiert.    <I>Beispiel:</I>  26,6 Teile     Benzaldehyd-2.4-disulfosäure     werden in der üblichen Weise in verdünnter  Schwefelsäure mit 37 Teilen     2-Mono-n-butyl-          amino-l-methylbenzol    kondensiert.

   Die aus  fallende     Leukoverbindung    wird abgetrennt,  in Wasser unter Zusatz der berechneten  Menge Natronlauge gelöst und mit     Bichroinat       und Salzsäure oxydiert. Nach dem     Aussalzen     erhält man einen     Farbstoff,    der Wolle und  Seide ebenso stark und in klarerer     Nüance     anfärbt, wie die doppelte Menge des     Farb-          stoffes    aus     Benzaldehyd-2.        4-disulfosäure    und       2-Monoaethylamino-l-methylbenzol.  



      Additional patent to main patent No. 136390. Procedure for the representation of a blue dye of the diaminotriplienylmethane series. In the main patent, a blue dye is described which is produced by condensation of 1 mol. Benzaldehyde-2. 4-disulfonic acid with 2 mol. 2. 1'-methylpropylamino-1-methylbenzene and oxidation of the leuco compound formed is obtained.



  An analogous dye with the same valuable properties is obtained if 1 mole of benzaldehyde-2,4-disulfonic acid is scored <B> 2 </B> moles. 2-mono-n-butylamino-1-methylbenzene and the leuco compound is then condensed oxidized. <I> Example: </I> 26.6 parts of benzaldehyde-2,4-disulfonic acid are condensed in the usual way in dilute sulfuric acid with 37 parts of 2-mono-n-butylamino-1-methylbenzene.

   The leuco compound which falls out is separated off, dissolved in water with the addition of the calculated amount of sodium hydroxide solution and oxidized with bichroinate and hydrochloric acid. After salting out, a dye is obtained which dyes wool and silk just as strongly and in a clearer shade as twice the amount of the dye from benzaldehyde-2. 4-disulfonic acid and 2-monoethylamino-1-methylbenzene.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines blauen Farbstoffes der Diaminotriphenylmethanreihe, dadurch gekennzeichnet, dass man 1 112o1. Benzaldehyd-2.4-disulfosäure mit 2 Mol. 2 Mono-n-butylamino-l-methylbenzol konden siert und die Leukoverbindung oxydiert. Der Farbstoff färbt Wolle und Seide in sehr kräftigen Lind auch bei künstlichem Licht klaren, schönen, blauen Tönen an. PATENT CLAIM: Process for the preparation of a blue dye of the diaminotriphenylmethane series, characterized in that 1 112o1. Benzaldehyde-2,4-disulfonic acid is condensed with 2 mol. 2 mono-n-butylamino-1-methylbenzene and the leuco compound is oxidized. The dye stains wool and silk in very strong and clear, beautiful, blue tones even in artificial light.
CH156018D 1931-08-28 1931-08-28 Process for the preparation of a blue dye of the diaminotriphenylmethane series. CH156018A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH156018T 1931-08-28
CH136390T 1931-08-28

Publications (1)

Publication Number Publication Date
CH156018A true CH156018A (en) 1932-07-15

Family

ID=25712713

Family Applications (1)

Application Number Title Priority Date Filing Date
CH156018D CH156018A (en) 1931-08-28 1931-08-28 Process for the preparation of a blue dye of the diaminotriphenylmethane series.

Country Status (1)

Country Link
CH (1) CH156018A (en)

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