CH157241A - Process for the preparation of an acidic dye of the anthraquinone series. - Google Patents

Process for the preparation of an acidic dye of the anthraquinone series.

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Publication number
CH157241A
CH157241A CH157241DA CH157241A CH 157241 A CH157241 A CH 157241A CH 157241D A CH157241D A CH 157241DA CH 157241 A CH157241 A CH 157241A
Authority
CH
Switzerland
Prior art keywords
preparation
acidic dye
amino
anthraquinone series
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 CH157241A publication Critical patent/CH157241A/en

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Description

  

  Verfahren zur Darstellung eines     sauren    Farbstoffes der     Anthraehinonreihe.       Gegenstand dieses Zusatzpatentes ist ein  Verfahren zur Darstellung eines sauren Farb  stoffes der     Anthrachinonreihe,    welches dadurch  gekennzeichnet ist, dass man     4'-Amino-di-          plrerrylmetharr-2-carbonsäure    mit     1-Amino-4-          bromarrthrachinon-2-sulfosäure    in Form ihrer       Natriumsalze    in wässeriger Lösung und in  Gegenwart einer geringen Menge von Kupfer  chlorür kondensiert.  



  <I>Beispiel:</I>  Eine Lösung von 50 Gewichtsteilen     4'-          Amirro-diphenylmetharr-2-carbonsäure    (erhält  lich aus     4-Chlorbenzoyl-o-benzoesäure    durch  Umsetzung mit Ammoniak gemäss D. R. P.

    234917 und darauffolgende Reduktion) in 750  Gewichtsteilen Wasser und 38     Cxewichtsteilen     Soda wird mit 60 Gewichtsteilen     1-Amino-          4-bromanthrachinon-2-sulfosaurem    Natrium  und 2,5 Gewichtsteilen     Kupferchlorür    versetzt:  Die Mischung färbt sich bereits nach     1/2stün-          digem    schwachem Sieden rein blau und wird    zur Beendigung der Kondensation noch 6  Stunden unter     Rückfluss    erwärmt. Der Farb  stoff wird, in der üblichen Weise isoliert und  gereinigt, als blaues, kristallinisches Pulver  erhalten. Er färbt Wolle und Seide in klaren,  rein     grünstichig    blauen Tönen.



  Process for the preparation of an acidic dye of the anthraquinone series. The subject of this additional patent is a process for the preparation of an acidic dye of the anthraquinone series, which is characterized in that 4'-amino-di- plrerrylmetharr-2-carboxylic acid with 1-amino-4-bromoarrthraquinone-2-sulfonic acid in the form of its sodium salts condensed in aqueous solution and in the presence of a small amount of copper chlorine.



  <I> Example: </I> A solution of 50 parts by weight of 4'-amirro-diphenylmethar-2-carboxylic acid (obtainable from 4-chlorobenzoyl-o-benzoic acid by reaction with ammonia according to D. R. P.

    234917 and subsequent reduction) in 750 parts by weight of water and 38 parts by weight of soda are mixed with 60 parts by weight of sodium 1-amino-4-bromoanthraquinone-2-sulfonic acid and 2.5 parts by weight of copper chloride: the mixture changes color after only 1/2 hour of low boiling pure blue and is refluxed for a further 6 hours to end the condensation. The dye is isolated and purified in the usual way, obtained as a blue, crystalline powder. He dyes wool and silk in clear, purely greenish blue tones.

Claims (1)

PATENTANSPRUC I Verfahren zur Darstellung eines sauren Farbstoffes der Anthraobiriorrreihe, dadurch gekennzeichnet, dass man 4'-Arnino-dipbenyl- methan-2-carbonsäure mit 1-Amino-4-brom- anthrachinon.2-sulfosäure in Form ihrer Na triumsalze in wässeriger Lösung und in Ge genwart einer geringen Menge von Kupfer- chlorür kondensiert. Der so erhaltene Farbstoff ist ein blaues kristallinisches Pulver. Er färbt Wolle und Seide in klaren, rein grünstichig blauen Tönen. PATENT CLAIM I Process for the preparation of an acidic dye of the Anthraobiriorr series, characterized in that 4'-amino-dipbenyl methane-2-carboxylic acid with 1-amino-4-bromo-anthraquinone.2-sulfonic acid in the form of its sodium salts in aqueous solution and condensed in the presence of a small amount of copper chloride. The dye thus obtained is a blue crystalline powder. He dyes wool and silk in clear, purely greenish blue tones.
CH157241D 1930-02-06 1931-02-04 Process for the preparation of an acidic dye of the anthraquinone series. CH157241A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE157241X 1930-02-06
CH153489T 1933-11-10

Publications (1)

Publication Number Publication Date
CH157241A true CH157241A (en) 1932-09-15

Family

ID=25716219

Family Applications (1)

Application Number Title Priority Date Filing Date
CH157241D CH157241A (en) 1930-02-06 1931-02-04 Process for the preparation of an acidic dye of the anthraquinone series.

Country Status (1)

Country Link
CH (1) CH157241A (en)

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