CH185585A - 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
CH185585A
CH185585A CH185585DA CH185585A CH 185585 A CH185585 A CH 185585A CH 185585D A CH185585D A CH 185585DA CH 185585 A CH185585 A CH 185585A
Authority
CH
Switzerland
Prior art keywords
preparation
dye
acidic dye
anthraquinone series
anthraquinone
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 CH185585A publication Critical patent/CH185585A/en

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Description

  

  Verfahren zur Darstellung eines sauren Farbstoffes der     Anthrachinonreihe.            Gegenstand    des vorliegenden Zusatzpaten  tes ist ein Verfahren zur Darstellung eines  sauren Farbstoffes der     Anthrachinonreihe,     welches dadurch gekennzeichnet ist, dass man       1-amino=4-bromanthrachinon    - 2 -     sulfosaures     Natrium mit     m-Aminobenzyl-methylsulfon     zur Umsetzung bringt.  



  <I>Beispiel:</I>  40 Gewichtsteile     1-amino-4-bromanthra-          chinon-2-sulfosaures    Natrium werden mit 216       Gewichtsteilen        m-Aminobenzyl-methylsulfon     in 180 Gewichtsteilen Wasser bei Gegenwart  von 4     Gewichtsteilen    Soda, 20 Gewichtsteilen       Natriumbikarbonat    und 1     Gewichtsteil        Kup-          ferchlorür    mehrere Stunden auf 65 bis 75    erhitzt, bis die     Farbstoffbildung    beendet .ist.  Das     Natriumsalz    des Farbstoffes scheidet  sich in derben Kristallen beim Erkalten ab.

    Es wird abgesaugt und mit verdünnter Na  triumchloridlösung gewaschen. Getrocknet       stellt    der Farbstoff ein blaues Pulver dar,    das Wolle in saurem Bade in klaren blauen  Tönen färbt. Der Farbstoff hat folgende       Konstitution     
EMI0001.0020     
    ,Das zur Kondensation verwendete m  Aminobenzyl-methylsulfon kann nach dem  im Beispiel des Zusatzpatentes Nr. 1:84185,       Abs.    2 angegebenen Verfahren aus     m-Nitro-          benzylchlorid    hergestellt werden.     Meta-Ni-          trobenzyl-methylsulfon    schmilzt bei 121  .       Meta-Aminobenzyl-methylsulfon    schmilzt bei  126  .



  Process for the preparation of an acidic dye of the anthraquinone series. The subject of the present additional patent is a process for the preparation of an acidic dye of the anthraquinone series, which is characterized in that 1-amino = 4-bromoanthraquinone - 2 - sodium sulphate is reacted with m-aminobenzylmethylsulphone.



  <I> Example: </I> 40 parts by weight of 1-amino-4-bromoanthraquinone-2-sulfonic acid sodium are mixed with 216 parts by weight of m-aminobenzyl-methylsulfone in 180 parts by weight of water in the presence of 4 parts by weight of soda, 20 parts by weight of sodium bicarbonate and 1 Part by weight of copper chloride heated to 65 to 75 hours for several hours until the dye formation is complete. The sodium salt of the dye separates out in coarse crystals when it cools.

    It is filtered off with suction and washed with dilute sodium chloride solution. When dried, the dye is a blue powder that dyes wool in clear blue tones in an acid bath. The dye has the following constitution
EMI0001.0020
    The m aminobenzylmethylsulfone used for the condensation can be prepared from m-nitrobenzyl chloride according to the method given in the example of additional patent no. 1: 84185, paragraph 2. Meta-nitrobenzyl-methylsulfone melts at 121. Meta-aminobenzyl-methylsulfone melts at 126.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines sauren Farbstoffes der Anthrachinonreihe, dadurch gekennzeichnet, dass man 1-amino-4-brom- anthrachinon-2-sulfosaures Natrium mit m- Aminobenzyl-methylsulfon zur Umsetzung bringt. . Der so erhaltene Farbstoff ist ein blaues Pulver, -das Wolle in saurem Bade in klaren blauen Tönen färbt. PATENT 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 reacted with m-aminobenzyl-methylsulphone. . The dye thus obtained is a blue powder which dyes wool in clear blue tones in an acid bath. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Umsetzung der Reaktionskomponenten in Wasser in Gegen wart von Soda, Natriumbikarbonat und Kup- ferchlorür durch mehrstündiges Erhitzen auf 6'5 bis 75 C bewirkt. SUBSTANTIAL CLAIM: Process according to patent claim, characterized in that the reaction components are converted into water in the presence of soda, sodium bicarbonate and copper chloride by heating at 6.5 to 75 C for several hours.
CH185585D 1933-01-02 1935-05-17 Process for the preparation of an acidic dye of the anthraquinone series. CH185585A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH165832T 1933-01-02
DE185585X 1934-05-19

Publications (1)

Publication Number Publication Date
CH185585A true CH185585A (en) 1936-07-31

Family

ID=25718172

Family Applications (1)

Application Number Title Priority Date Filing Date
CH185585D CH185585A (en) 1933-01-02 1935-05-17 Process for the preparation of an acidic dye of the anthraquinone series.

Country Status (1)

Country Link
CH (1) CH185585A (en)

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