CH168020A - 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
CH168020A
CH168020A CH168020DA CH168020A CH 168020 A CH168020 A CH 168020A CH 168020D A CH168020D A CH 168020DA CH 168020 A CH168020 A CH 168020A
Authority
CH
Switzerland
Prior art keywords
acid
dye
anthraquinone
preparation
sodium
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 CH168020A publication Critical patent/CH168020A/en

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

Description

  

  Verfahren zur Darstellung eines sauren Farbstoffes der     Anthrachinonreihe.       Gegenstand des vorliegenden Zusatz  patentes ist ein Verfahren zur Darstellung  eines sauren     Farbstoffes    der     Anthrachinon-          reihe,    welches dadurch gekennzeichnet ist,

    dass man     1-amino-4-halogenanthrachinon-2-          sulfosaures    Natrium mit     m-aminophenyl-          sulfonessigsaurem    Natrium zur Umsetzung       bringt    und in dem so erhaltenen Farbstoff  die     Carboxylgruppe    durch Behandeln mit  Äthylalkohol und gasförmiger Salzsäure in  die     Carboxyäthylestergruppe    überführt.  



  Der Farbstoff färbt Wolle aus saurem  Bade in klaren blauen Tönen von guten Echt  heitseigenschaften.  



  <I>Beispiel:</I>       32    Gewichtsteile     m-aminophenylsulfon-          essigsaures    Natrium werden mit 40 Gewichts  teilen     1-amino-4-bromanthrachinon-2-sulfo-          ssurem    Natrium,  & 0 Gewichtsteilen 10%iger       Natriumkarbonatlösung,    1 Gewichtsteil     Kup-          èrehlortir    und 120 Gewichtsteilen Wasser    mehrere Stunden zum gelinden Sieden erhitzt.  Der gebildete blaue Farbstoff wird durch  Ansäuern mit verdünnter Salzsäure abge  schieden.

   Die so erhaltene     Farbstoffsäure     wird durch Behandeln mit Äthylalkohol und  gasförmiger Salzsäure in den     Äthylester    über  geführt.  



  Der so erhaltene Farbstoff färbt Wolle  aus saurem Bade in klaren blauen Tönen  von guten Echtheitseigenschaften.



  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 by

    that 1-amino-4-halogenanthraquinone-2-sulfonic acid sodium is reacted with m-aminophenyl sulfonacetic acid sodium and the carboxyl group in the dye thus obtained is converted into the carboxyethyl ester group by treatment with ethyl alcohol and gaseous hydrochloric acid.



  The dye dyes wool from an acid bath in clear blue tones with good fastness properties.



  <I> Example: </I> 32 parts by weight of m-aminophenylsulphonacetic acid sodium are combined with 40 parts by weight of 1-amino-4-bromoanthraquinone-2-sulphonic acid sodium, & 0 parts by weight of 10% sodium carbonate solution, 1 part by weight of cupric chloride and 120 parts by weight of water heated to a gentle boil for several hours. The blue dye formed is separated out by acidification with dilute hydrochloric acid.

   The dye acid obtained in this way is passed into the ethyl ester by treatment with ethyl alcohol and gaseous hydrochloric acid.



  The dye thus obtained dyes wool from an acid bath in clear blue shades with good fastness properties.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines sauren Farbstoffes des Anthrachinonreihe, dadurch gekennzeichnet, dass man 1-amino-4-halogen- anthrachinon-2-sulfosaures Natrium mit m- aminophenylsulfonessigsaurem Natrium zur Umsetzung bringt und in dem so erhaltenen Farbstoff die Carboxylgruppe durch Behan deln mit Äthylalkohol und gasfömiger Salz säure in die Carboxy-äthylestergruppe über führt. Claim: Process for the preparation of an acidic dye of the anthraquinone series, characterized in that 1-amino-4-halo-anthraquinone-2-sulfonic acid is reacted with sodium m-aminophenylsulfonacetic acid and the carboxyl group in the resulting dye is treated with Ethyl alcohol and gaseous hydrochloric acid in the carboxy-ethyl ester group. Der so erhaltene Farbstoff färbt Wolle aus saurem Bade in klaren blauen Tönen von guten Echtheitseigenschaften. UNTERANSPRüCHE 1. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass' man 1-amino-4-brom- anthrachinon-2-sulfosaures Natrium ver wendet. 2. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Umsetzung durch Erhitzen in Gegenwart von Wasser, Natriumkarbonat und einer kleinen Menge von Kupferchlorür ausführt. The dye thus obtained dyes wool from an acid bath in clear blue shades with good fastness properties. SUBClaims 1. Method according to claim, characterized in that 1-amino-4-bromo-anthraquinone-2-sulphonic acid sodium is used. 2. The method according to claim, characterized in that the reaction is carried out by heating in the presence of water, sodium carbonate and a small amount of copper chloride.
CH168020D 1932-01-06 1933-01-02 Process for the preparation of an acidic dye of the anthraquinone series. CH168020A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE168020X 1932-01-06
CH165832T 1933-01-02

Publications (1)

Publication Number Publication Date
CH168020A true CH168020A (en) 1934-03-15

Family

ID=25718170

Family Applications (1)

Application Number Title Priority Date Filing Date
CH168020D CH168020A (en) 1932-01-06 1933-01-02 Process for the preparation of an acidic dye of the anthraquinone series.

Country Status (1)

Country Link
CH (1) CH168020A (en)

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