CH185588A - 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
CH185588A
CH185588A CH185588DA CH185588A CH 185588 A CH185588 A CH 185588A CH 185588D A CH185588D A CH 185588DA CH 185588 A CH185588 A CH 185588A
Authority
CH
Switzerland
Prior art keywords
preparation
dye
anthraquinone series
acidic dye
water
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 CH185588A publication Critical patent/CH185588A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Darstellung eines sauren Farbstoffes der     Anthrachinonreihe.       Gegenstand dieses     Zusatzpatentes    ist ein  Verfahren zur Darstellung eines sauren Farb  stoffes der     Anthrachinonreihe,    welches da  durch gekennzeichnet ist, dass man     1-amino-          4-bromanthrachinon-2-sulfosaures    Natrium  mit     1-Aminonaphtalin-5-sulfonsäure-diog-          äthylamid    kondensiert.  



  <I>Beispiel:</I>  21 Gewichtsteile     1-amino-4-bromanthra-          Chinon-2-sulfosaures    Natrium werden     mit    20  Gewichtsteilen     1-Aminonaphtalin-5-sulfon-          säure-diogäthylamid,    20 Gewichtsteilen Na  triumbikarbonat, 2 Gewichtsteilen     Kupfer-          chlorür    und 2:50 Gewichtsteilen Wasser unter  Rühren auf 60 bis 70   C erwärmt. Nach       beendeter    Kondensation wird das abgekühlte  Reaktionsgemisch filtriert und mit Wasser  gewaschen.

   Das Filtrat, welches den Farb  stoff enthält, wird mit dem doppelten Vo  lumen Wasser verdünnt und zur     Abscheidung     des     Kondensationsproduktes    mit Salzsäure    versetzt. Man     erhitzt    unter Rühren so lange  zum Sieden, bis der Farbstoff     kristallinisch     wird. Nach dem Absaugen     wird    das Produkt  durch     Umlösen    aus     verdünnter        .Sodalösung     und Fällen mit     HCl    noch weiter gereinigt.

    Man erhält einen leicht löslichen Farbstoff,  welcher auf Wolle und Seide     grünstichig     blaue Töne von sehr guten     Echtheiten    er  gibt.



  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 by the fact that 1-amino-4-bromoanthraquinone-2-sulfonic acid sodium is condensed with 1-aminonaphthalene-5-sulfonic acid diogethylamide.



  <I> Example: </I> 21 parts by weight of 1-amino-4-bromoanthra-quinone-2-sulfonic acid sodium are mixed with 20 parts by weight of 1-aminonaphthalene-5-sulfonic acid diogäthylamid, 20 parts by weight of sodium bicarbonate, 2 parts by weight of copper chlorine and 2:50 parts by weight of water heated to 60 to 70 ° C. with stirring. When the condensation has ended, the cooled reaction mixture is filtered and washed with water.

   The filtrate, which contains the dye, is diluted with twice the volume of water and hydrochloric acid is added to separate the condensation product. The mixture is heated to the boil while stirring until the dye becomes crystalline. After suction, the product is further purified by dissolving it from dilute soda solution and precipitating it with HCl.

    A readily soluble dye is obtained which gives greenish blue shades of very good fastness properties on wool and silk.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines sauren Farbstoffes der Anthrachinonreihe, dadurch gekennzeichnet, dass man 1-amino-4-brom- anthrachinon-2-sulfosaures Natrium mit 1 Aminonaphtalin-5-sulfonsäure-diogäthylamid kondensiert. Claim: Process for the preparation of an acidic dye of the anthraquinone series, characterized in that 1-amino-4-bromo-anthraquinone-2-sulphonic acid sodium is condensed with 1 aminonaphthalene-5-sulphonic acid diethylamide. Der so erhaltene Farbstoff ist in Wasser leicht löslich und färbt Wolle und Seide in grünstichig blauen Tönen von sehr guten Echtheiten. ÜNTERANSPRÜCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Reaktionskom ponenten in Gegenwart von Wasser, Natrium bikarbonat und Kupferchlorür unter Rühren bei 60 bis<B>70'</B> C erwärmt, bis,die Farbstoff bildung beendet ist. The dye thus obtained is readily soluble in water and dyes wool and silk in greenish blue shades with very good fastness properties. UNDER CLAIM: Process according to claim, characterized in that the reaction components are heated in the presence of water, sodium bicarbonate and copper chloride with stirring at 60 to 70 ° C until the dye formation has ended.
CH185588D 1934-04-11 1935-04-10 Process for the preparation of an acidic dye of the anthraquinone series. CH185588A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE185588X 1934-04-11
CH182721T 1935-04-10

Publications (1)

Publication Number Publication Date
CH185588A true CH185588A (en) 1936-07-31

Family

ID=25720782

Family Applications (1)

Application Number Title Priority Date Filing Date
CH185588D CH185588A (en) 1934-04-11 1935-04-10 Process for the preparation of an acidic dye of the anthraquinone series.

Country Status (1)

Country Link
CH (1) CH185588A (en)

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