[go: up one dir, main page]

CH208352A - Process for the preparation of an acidic dye. - Google Patents

Process for the preparation of an acidic dye.

Info

Publication number
CH208352A
CH208352A CH208352DA CH208352A CH 208352 A CH208352 A CH 208352A CH 208352D A CH208352D A CH 208352DA CH 208352 A CH208352 A CH 208352A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
methyl
condensed
acidic 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 CH208352A publication Critical patent/CH208352A/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
    • C09B11/26—Triarylmethane dyes in which at least one of the aromatic nuclei is heterocyclic

Landscapes

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

Description

  

  Verfahren zur Herstellung eines sauren Farbstoffes.    Es wurde gefunden, dass man einen sehr  lichtechten sauren Farbstoff erhält, wenn  man 1     Mol        N7Methyl-4-äthoxydiphenylamin-          4'-carbonsäure    mit 2     Mol        1-Methyl-2-phenyl-          indol    mittels     Phosphoroxychlorid    kondensiert       und    den erhaltenen basischen Farbstoff so  lange mit einem sulfonierend wirkenden Mit  tel behandelt, bis zwei     Sulfonsäuregruppen     eingetreten sind.  



  Der neue Farbstoff färbt Wolle und  Seide in gedeckten blauen Tönen von hervor  ragender Lichtechtheit.  



  <I>Beispiel:</I>  Man erwärmt unter Rühren 13,6 Teile       N-Methyl-4-äthoxydiphenylamin-4'-carbon-          säure    und 20,7     Teile        1-Methyl-2-phenylindol     unter     Zusatz    von 16,4 Teilen     Phosphoroxy-          chlorid    in 13,6 Teilen     Toluol    20     Stunden    lang  bei 95   C. Der dabei erhaltene basische  Farbstoff wird abgeschieden und getrocknet.

    30 Teile des basischen Farbstoffes löst man  in 100 Teilen 90 %     iger    Schwefelsäure     und     gibt unter     Eiskühlung    so lange Schwefel-         säuremonohydrat    zu, bis der Farbstoff     alkali-          löslich    geworden ist. Man giesst die Um  setzungsmischung auf Eis, wobei sich die  freie     Farbstoffdisulfosäure    quantitativ ab  scheidet. Der erhaltene Farbstoff färbt  Wolle und Seide     in    gedeckten blauen Tönen  von hervorragender Lichtechtheit.



  Process for the preparation of an acidic dye. It has been found that a very lightfast acidic dye is obtained if 1 mol of N7-methyl-4-ethoxydiphenylamine-4'-carboxylic acid is condensed with 2 mol of 1-methyl-2-phenylindole by means of phosphorus oxychloride and the basic dye obtained is condensed with it for so long treated with a sulfonating agent until two sulfonic acid groups have occurred.



  The new dye dyes wool and silk in muted blue tones with excellent lightfastness.



  <I> Example: </I> 13.6 parts of N-methyl-4-ethoxydiphenylamine-4'-carboxylic acid and 20.7 parts of 1-methyl-2-phenylindole are heated with the addition of 16.4 parts Phosphorus oxychloride in 13.6 parts of toluene for 20 hours at 95 ° C. The basic dye obtained is deposited and dried.

    30 parts of the basic dye are dissolved in 100 parts of 90% strength sulfuric acid and sulfuric acid monohydrate is added while cooling with ice until the dye has become soluble in alkali. The reaction mixture is poured onto ice, the free dye disulfonic acid separating out quantitatively. The dye obtained dyes wool and silk in muted blue shades of excellent lightfastness.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines sauren Farbstoffes, dadurch gekennzeichnet, dass man 1 Mol N-Methyl-4-äthoxydiphenylamin- 4'-carbonsäure mit 2 Mol 1-Methyl-2-phenyl- indol mittels Phosphoroxychlorid kondensiert und den erhaltenen basischen Farbstoff so lange mit einem sulfonierend wirkenden Mit tel behandelt, bis zwei Sulfonsäuregruppen eingetreten sind. Claim: Process for the preparation of an acidic dye, characterized in that 1 mole of N-methyl-4-ethoxydiphenylamine-4'-carboxylic acid is condensed with 2 moles of 1-methyl-2-phenyl-indole by means of phosphorus oxychloride and the basic dye obtained is condensed for so long treated with a sulfonating agent until two sulfonic acid groups have occurred. Der neue Farbstoff färbt Wolle und Seide in gedeckten blauen Tönen von hervor ragender Lichtechtheit. The new dye dyes wool and silk in muted blue tones with excellent lightfastness.
CH208352D 1937-12-03 1938-11-02 Process for the preparation of an acidic dye. CH208352A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE208352X 1937-12-03

Publications (1)

Publication Number Publication Date
CH208352A true CH208352A (en) 1940-01-31

Family

ID=5794182

Family Applications (1)

Application Number Title Priority Date Filing Date
CH208352D CH208352A (en) 1937-12-03 1938-11-02 Process for the preparation of an acidic dye.

Country Status (1)

Country Link
CH (1) CH208352A (en)

Similar Documents

Publication Publication Date Title
CH208352A (en) Process for the preparation of an acidic dye.
CH210534A (en) Process for the preparation of an acidic dye.
DE718705C (en) Process for the preparation of acidic diphenylindolylmethane dyes
DE712600C (en) Process for the preparation of triphenylmethane dyes
CH197480A (en) Process for the preparation of a polymethine dye.
CH200284A (en) Process for the preparation of an acidic dye.
CH161228A (en) Process for the preparation of a vat dye of the anthraquinone series.
CH156022A (en) Process for the production of a new vat dye.
CH191165A (en) Process for the preparation of a new monoazo dye.
CH165057A (en) Process for the production of a new vat dye.
CH165056A (en) Process for the production of a new vat dye.
CH224359A (en) Process for the production of an acidic wool dye.
CH131509A (en) Process for the preparation of a condensation product presumably consisting of 1.B-oxyäthylamino-5.B-oxyäthylaminoanthraquinone.
CH120174A (en) Process for the production of a new dye.
CH207956A (en) Process for the preparation of an insoluble dye.
CH125878A (en) Process for the preparation of a violet vat dye of the 2-thionaphthene-2-indolindigo series.
CH113867A (en) Process for the production of a new dye.
CH224548A (en) Process for the preparation of a new dye of the anthraquinone series.
CH228851A (en) Process for the production of a new anthraquinone dye.
CH110287A (en) Process for the production of a new dye.
CH153717A (en) Process for the preparation of a vat dye.
CH191164A (en) Process for the preparation of a new monoazo dye.
CH174892A (en) Process for the production of a new vat dye.
CH269054A (en) Process for the production of a new dye of the anthraquinone series.
CH116745A (en) Process for the production of a new dye.