CH211436A - 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
CH211436A
CH211436A CH211436DA CH211436A CH 211436 A CH211436 A CH 211436A CH 211436D A CH211436D A CH 211436DA CH 211436 A CH211436 A CH 211436A
Authority
CH
Switzerland
Prior art keywords
dye
chromable
preparation
bromine
triarylmethane 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 CH211436A publication Critical patent/CH211436A/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
    • C09B11/06—Hydroxy derivatives of triarylmethanes in which at least one OH group is bound to an aryl nucleus and their ethers or esters
    • C09B11/08—Phthaleins; Phenolphthaleins; Fluorescein

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

Description

  

      Zusatzpatent    zum Hauptpatent Nr. 198713.    Verfahren zur Herstellung eines ehr     omierbaren        Farbstoffes    der     Triarylmethanr        eihe.       Gegenstand dieses Zusatzpatentes ist ein  Verfahren zur Herstellung eines     chromier-          baren    Farbstoffes der     Triarylmethanreihe,     welches dadurch gekennzeichnet ist,

   dass  man 1     Mol        5-Ogytrimellitsäureanhydrid    mit  2     Mol        ss-Resorcylsäure    kondensiert und 1     Mol     des so erhaltenen Farbstoffes mit etwa 4     Mol     Brom behandelt.  



  <I>Beispiel:</I>  21 Gewichtsteile     5-Ogytrimellitsäureanhy-          drid,    31 Gewichtsteile     ss-Resorcylsäure,    14  Gewichtsteile wasserfreies Chlorzink werden  verrieben und im Ölbad mehrere Stunden bis  zum Festwerden der Schmelze auf<B>1.80'</B> C  erhitzt. Nach dem Abkühlen wird pulveri  siert und mit 200 Gewichtsteilen     5%iger     Salzsäure ausgekocht, und der gelbe Rück  stand warm abgesaugt. Man löst diesen  Farbstoff in     verdünnter        Sodalösung,    worin  er mit orangeroter Farbe und grüner Fluor  eszenz löslich ist, filtriert und fällt den    Farbstoff mit verdünnten Säuren wieder aus.

    Zur weiteren Reinigung kann er aus     wäss-          rigem    Alkohol umgelöst     werden.     



  40 Gewichtsteile dieses Farbstoffes wer  den in<B>160</B> Gewichtsteilen Alkohol suspen  diert     und    bei gewöhnlicher Temperatur lang  sam unter Rühren mit 64 Gewichtsteilen  Brom versetzt. Nach     mehrstündigem    Stehen  wird mit dem doppelten Volumen     Wasser          verdünnt,    der ausfallende rote Farbstoff ab  gesaugt, kongoneutral gewaschen und durch  Lösen in     Bicarbonatlösung    und Eindampfen  in das     Natriumsalz    übergeführt. Der Farb  stoff färbt die tierische Faser aus saurem  Bade in sehr klaren,     gelbstichig    roten Tö  nen, deren Echtheitseigenschaften durch       Nachchromieren    verbessert werden.



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

   that 1 mol of 5-ogytrimellitic anhydride is condensed with 2 mol of β-resorcylic acid and 1 mol of the dye thus obtained is treated with about 4 mol of bromine.



  <I> Example: </I> 21 parts by weight of 5-ogytrimellitic anhydride, 31 parts by weight of β-resorcylic acid, 14 parts by weight of anhydrous zinc chloride are rubbed in and in an oil bath for several hours until the melt solidifies at 1.80 ° C heated. After cooling, it is pulverized and boiled with 200 parts by weight of 5% hydrochloric acid, and the yellow residue was sucked off warm. This dye is dissolved in dilute soda solution, in which it is soluble with an orange-red color and green fluorescence, filtered and the dye is precipitated again with dilute acids.

    For further cleaning it can be redissolved from aqueous alcohol.



  40 parts by weight of this dye are suspended in 160 parts by weight of alcohol and 64 parts by weight of bromine are slowly added at ordinary temperature while stirring. After standing for several hours, the mixture is diluted with twice the volume of water, the red dye which has precipitated is sucked off, washed in a Congo-neutral manner and converted into the sodium salt by dissolving it in bicarbonate solution and evaporation. The dye colors the animal fibers from acid baths in very clear, yellowish red tones, the fastness properties of which are improved by re-chrome plating.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines chro- mierbaren Farbstoffes der Triarylmethan- reihe, dadurch gekennzeichnet, dass man 13101 5-Öxytrimellitsäureanhydrid mit 2Mol fl-Resorcylsäure kondensiert und 1 1Vlol des so erhaltenen Farbstoffes mit etwa 4 111o1 Brom behandelt. Claim: Process for the preparation of a chromable dye of the triarylmethane series, characterized in that 13,101 of 5-oxytrimellitic anhydride is condensed with 2 mol of f1-resorcylic acid and 1 1 of vol of the dye thus obtained is treated with about 4 111o1 bromine. Der so erhaltene Farbstoff färbt die tie rische Faser aus saurem Bade in sehr kla ren, gelbstichig roten Tönen, deren Echt heitseigenschaften durch Nachchromieren wesentlich verbessert werden. UNTERAN SPRtl CHE 1. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Kondensa- tion durch Erhitzen der Reaktionskom ponenten in Gegenwart von wasserfreiem Chlorzink während mehrerer Stunden bei 180 C bewirkt. 2. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Bromierung durch Einwirkenlassen von Brom in Ge genwart von Alkohol bewirkt. The dye obtained in this way colors the animal fiber from an acid bath in very clear, yellowish red tones, the authenticity of which is significantly improved by re-chroming. UNTERAN SPRtl CHE 1. Process according to patent claim, characterized in that the condensation is effected by heating the reaction components in the presence of anhydrous zinc chloride for several hours at 180 ° C. 2. The method according to claim, characterized in that the bromination is effected by allowing bromine to act in the presence of alcohol.
CH211436D 1937-03-25 1937-03-25 Process for the preparation of a chromable dye of the triarylmethane series. CH211436A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH211436T 1937-03-25
CH198713T 1938-12-20

Publications (1)

Publication Number Publication Date
CH211436A true CH211436A (en) 1940-09-15

Family

ID=25723127

Family Applications (1)

Application Number Title Priority Date Filing Date
CH211436D CH211436A (en) 1937-03-25 1937-03-25 Process for the preparation of a chromable dye of the triarylmethane series.

Country Status (1)

Country Link
CH (1) CH211436A (en)

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