CH159867A - Process for the preparation of an acidic dye. - Google Patents

Process for the preparation of an acidic dye.

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Publication number
CH159867A
CH159867A CH159867DA CH159867A CH 159867 A CH159867 A CH 159867A CH 159867D A CH159867D A CH 159867DA CH 159867 A CH159867 A CH 159867A
Authority
CH
Switzerland
Prior art keywords
preparation
acidic dye
dye
effected
acetate
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 CH159867A publication Critical patent/CH159867A/en

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Description

  

  Verfahren     zur    Darstellung eines sauren Farbstoffes.    Gegenstand dieses     Zusatzpatentes    ist ein  Verfahren zur Darstellung eines sauren Farb  stoffes, welches dadurch gekennzeichnet ist,  dass man     1-Amino-2.4-dibromanthrachinon    mit       Aminoterephtalsäuredirnethylester    kondensiert  und darauf das so erhaltene Produkt durch  Behandlung mit     Kaliumsulfit    in die     Sulfo-          säure    überführt.  



       Beispiel:     38 Gewichtsteile 1-     Amiiio-2.        4-dibroman          thrachinon,    31 Gewichtsteile     Aminoterephtal-          säuredimethylester,    20 Gewichtsteile entwäs  sertes     galiumacetat,    0,5 Gewichtsteile Kupfer  acetat und 0,5 Gewichtsteile Kupferpulver  werden mit 200     Volumteilen        Amylalkohol    im  Ölbad 12 Stunden bei 150-160o C gerührt.  Nach dem Erkalten wird das ausgeschiedene       Kondensationsprodukt    abgesaugt, mit Alkohol  und Wasser gewaschen und getrocknet.

   Zur  Einführung der     Sulfosäuregruppe    werden 20    Gewichtsteile des Rohproduktes mit 45     Vo-          lumteilen    einer 35     o/oigen        galiumsulfitlösung     und 40 Gewichtsteilen Phenol solange zum  schwachen Sieden erhitzt, bis sich eine Probe  nach     Entfernung    des Phenols in Wasser klar  löst. Nachdem das Phenol mit Dampf abge  trieben wurde, wird filtriert und in der übli  chen Weise aufgearbeitet. Der so erhaltene       Farbstoff    färbt Wolle in blauen Tönen an.



  Process for the preparation of an acidic dye. The subject of this additional patent is a process for the preparation of an acidic dye, which is characterized in that 1-amino-2,4-dibromoanthraquinone is condensed with aminoterephthalic acid methyl ester and the product thus obtained is then converted into the sulfonic acid by treatment with potassium sulfite.



       Example: 38 parts by weight 1- Amiiio-2. 4-dibroman thrachinone, 31 parts by weight of aminoterephthalic acid dimethyl ester, 20 parts by weight of dehydrated galium acetate, 0.5 part by weight of copper acetate and 0.5 part by weight of copper powder are stirred with 200 parts by volume of amyl alcohol in an oil bath at 150-160 ° C. for 12 hours. After cooling, the precipitated condensation product is filtered off with suction, washed with alcohol and water and dried.

   To introduce the sulfonic acid group, 20 parts by weight of the crude product are heated to a gentle boil with 45 parts by volume of a 35% strength galium sulfite solution and 40 parts by weight of phenol until a sample dissolves clearly in water after the phenol has been removed. After the phenol has been driven off with steam, it is filtered and worked up in the usual way. The dye thus obtained stains wool in blue shades.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines sauren Farbstoffes, dadurch gekennzeichnet, dass man 1-Aniino-2.4-dibromanthrachinon mit Amino- terephtalsäuredimethylester kondensiert und darauf das so erhaltene Produkt durch Be handlung mit Kaliumsulfit in die Sulfosäure überführt. Der so erhaltene Farbstoff färbt Wolle in blauen Tönen an. PATENT CLAIM: Process for the preparation of an acidic dye, characterized in that 1-aniino-2,4-dibromoanthraquinone is condensed with dimethyl amino terephthalate and the product thus obtained is then converted into the sulfonic acid by treatment with potassium sulfite. The dye thus obtained stains wool in blue shades. UNTERANSPRüCHE: r. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Kondensation in Amylalkohol in Gegenwart von wasser freiem galiumacetat und geringen Mengen Kupferacetat und Kupferpulver in der Wärme bewirkt. 2. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Einführung der Sulfogruppe des Kondensationsproduk tes in Wasser mit Phenol und Kalium- sulfit in der Wärme bewirkt. SUB-CLAIMS: r. Process according to claim, characterized in that the condensation is effected in amyl alcohol in the presence of anhydrous galium acetate and small amounts of copper acetate and copper powder in the heat. 2. The method according to claim, characterized in that the introduction of the sulfo group of the condensation product in water is effected with phenol and potassium sulfite in the heat.
CH159867D 1930-12-24 1931-04-01 Process for the preparation of an acidic dye. CH159867A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE159867X 1930-12-24
CH157664T 1931-04-01

Publications (1)

Publication Number Publication Date
CH159867A true CH159867A (en) 1933-01-31

Family

ID=25716980

Family Applications (1)

Application Number Title Priority Date Filing Date
CH159867D CH159867A (en) 1930-12-24 1931-04-01 Process for the preparation of an acidic dye.

Country Status (1)

Country Link
CH (1) CH159867A (en)

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