CH203046A - Process for the preparation of a chromable dye of the triarylmethane series. - Google Patents

Process for the preparation of a chromable dye of the triarylmethane series.

Info

Publication number
CH203046A
CH203046A CH203046DA CH203046A CH 203046 A CH203046 A CH 203046A CH 203046D A CH203046D A CH 203046DA CH 203046 A CH203046 A CH 203046A
Authority
CH
Switzerland
Prior art keywords
dye
chromable
preparation
ethylamino
anhydride
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 CH203046A publication Critical patent/CH203046A/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
    • C09B11/24—Phthaleins containing amino groups ; Phthalanes; Fluoranes; Phthalides; Rhodamine dyes; Phthaleins having heterocyclic aryl rings; Lactone or lactame forms of triarylmethane dyes
    • C09B11/245—Phthaleins having both OH and amino substituent(s) on aryl ring

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

Description

  

      Zusatzpatent    zum Hauptpatent Nr. 198713.    Verfahren zur Darstellung eines     chromierbaren        Farbstoffes    der     Triarylmethanreihe.       Gegenstand     dieses        Zusatzpatentes    ist     ein     Verfahren zur Darstellung eines     chromier-          baren    Farbstoffes der     Triarylmethanreihe,     welches dadurch     gekennzeichnet        ist,,

  dass    man       3-Äthylamino-4-methylphenol    mit     5-Ogytri-          mellithsäureanhydTid        kondensiert.     



  <I>Beispiel:</I>  300     Gewichtsteile        5-Ogytrimelliths.äure-          anhydrid,    150     Gewichtsteile        3-ÄthyAamino-          4-methylphenol,.-erden        verrieben    und 4 Stun  den auf<B>1,80'</B> C     erhitzt.    Nach ,

  dem Erkalten  wird die Schmelze     gepulvert    und mit     ver-          dünnter        Salzsäure        ausgekocht.        Der     wird in     Bicarbonatlösung    oder in ver  dünntem Ammoniak unter     gelindem    Erwär  men gelöst, die Lösung filtriert und mit     .Salz-          s:äure    angesäuert. Der ausfallende rote     Nie-          denschJag    wird mit kaltem     Wasser    neutral       gewaschen    und getrocknet.

   Zur weiteren  Reinigung     kann.    der Farbstoff in verdünntem  Ammoniak gelöst und mit starker     Ammon-          chloridlösung    als     Ammonsasz        ausgesalzen          werden.    Der Farbstoff färbt     aus    saurem  Bade Wolle rot. Die     Echtheiten    dieser Fär-         bung    werden durch     Nachchromieren    bedeu  tend     verbessert.  



      Additional patent to main patent No. 198713. Process for the preparation of a chromable dye of the triarylmethane series. The subject of this additional patent is a process for the preparation of a chromable dye of the triarylmethane series, which is characterized

  that 3-ethylamino-4-methylphenol is condensed with 5-Ogytrimellitic anhydride.



  <I> Example: </I> 300 parts by weight of 5-ogytrimellitic acid anhydride, 150 parts by weight of 3-EthyAamino-4-methylphenol, - ground and 4 hours at <B> 1.80 '</B> C heated. After ,

  When it cools, the melt is powdered and boiled with diluted hydrochloric acid. This is dissolved in bicarbonate solution or in dilute ammonia with gentle warming, the solution filtered and acidified with hydrochloric acid. The precipitated red Nie- denschjag is washed neutral with cold water and dried.

   For further cleaning can. the dye is dissolved in dilute ammonia and salted out with a strong ammonium chloride solution as ammonium acid. The dye dyes acidic bath wool red. The fastness properties of this dyeing are significantly improved by re-chroming.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines chTomier- baren Farbstoffes dar Triarylmethanreihe, dadurch gekennzeichnet, ,dass maul 3-Äthyl- amino-4-methylphenol mit ) PATENT CLAIM: Process for the preparation of a chromable dye from the triarylmethane series, characterized in that 3-ethylamino-4-methylphenol with) 5-Ogytrimellith- säureanhydrid kondensiert. Der Parbstoff färbt Wolle aus saurem Bade in roten Tönen deren Echtheit durch Nachöhromieren bedeutend verbessert werden können. UNTERANSPRÜCHE 1. 5-Ogytrimellitic anhydride condensed. The paraffin dyes wool from an acid bath in red shades, the authenticity of which can be significantly improved by re-chroming. SUBCLAIMS 1. Verfahren nach Patentanspruch, dadurch gekennzeichnet, @diass man 3-Äthylamino-4- methylpheno.1 mit überschüssigem 5=Ogy- trimellitbsäureanhydrid kondensiert. 2. Process according to patent claim, characterized in that 3-ethylamino-4-methylpheno.1 is condensed with excess 5 = Ogy trimellitic anhydride. 2. Verfahren .nach Patentanspruch, @dadurch gekennzeichnet; @dass 3-Äthylamino-4-me- thylp#henol mit übersühüssigem 5-Ogytri- mellithsäureänhydrid verrieben und 4 iStun- , den lang auf 1i80 -C erhitzt wird. Method .according to the patent claim, @drawn by this; @that 3-ethylamino-4-methylphenol is triturated with excess 5-ogytrimellitic anhydride and heated to 180 ° C for 4 hours.
CH203046D 1936-02-26 1937-02-18 Process for the preparation of a chromable dye of the triarylmethane series. CH203046A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE203046X 1936-02-26
CH198713T 1938-12-20

Publications (1)

Publication Number Publication Date
CH203046A true CH203046A (en) 1939-02-15

Family

ID=25723131

Family Applications (1)

Application Number Title Priority Date Filing Date
CH203046D CH203046A (en) 1936-02-26 1937-02-18 Process for the preparation of a chromable dye of the triarylmethane series.

Country Status (1)

Country Link
CH (1) CH203046A (en)

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