CH211053A - Process for the preparation of a water-soluble oxazine dye. - Google Patents

Process for the preparation of a water-soluble oxazine dye.

Info

Publication number
CH211053A
CH211053A CH211053DA CH211053A CH 211053 A CH211053 A CH 211053A CH 211053D A CH211053D A CH 211053DA CH 211053 A CH211053 A CH 211053A
Authority
CH
Switzerland
Prior art keywords
dye
water
preparation
soluble
oxazine 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 CH211053A publication Critical patent/CH211053A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B19/00—Oxazine dyes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

  

  <B>Zusatzpatent</B> zum Hauptpatent Nr. 209346.    Verfahren zur Herstellung eines wasserlöslichen     Oxazinfarbstoffes.       Gegenstand dieses Zusatzpatentes ist ein  Verfahren zur Herstellung eines wasserlös  lichen     Oxazinfarbstoffes,    welches darin be  steht, dass man 2, 4,     6-Trinitro-l-methoxy-          benzol    mit     3-Amiiio-2-oxy-5-sulfobenzoesäure     in Gegenwart eines säurebindenden Mittels  kondensiert.  



  Die so erhaltene neue Verbindung ist ein  brauner Farbstoff, der zum Färben von Wolle  und Leder verwendet werden kann.  



  <I>Beispiel:</I>  In einer Lösung aus 1000 Gewichtsteilen  Wasser und 132 Gewichtsteilen wasserfreier  Soda werden 186,4 Gewichtsteile     3-Amino-          2-oxy-5-sulfoberizoesäure    gelöst und mit 197  Gewichtsteilen 2, 4,     6-Trinitro-l-methoxyben-          zol    bei     Wasserbadtemperatur    verrührt. Es  setzt hierbei eine ziemlich lebhafte Reaktion  ein, wobei die Flüssigkeit sich braun färbt  und nach einiger Zeit     Salpetrigsäuredämpfe     ausgestossen werden. Die Abspaltung der    salpetrigen Säure ist im wesentlichen nach  etwa 8 bis 9stündigem Erhitzen beendet.

   Die  so erhaltene Farbstoff     lösungwird    eingedampft,  wodurch 425 Gewichtsteile eines leichtlös  lichen braunen Farbstoffes folgender Konsti  tution  
EMI0001.0013     
    erhalten werden. Der Farbstoff kann zum  Färben von Wolle und Leder verwendet  werden und ist identisch mit dem nach dem  Hauptpatent erhaltenen Farbstoff.



  <B> Additional patent </B> to main patent no. 209346. Process for the production of a water-soluble oxazine dye. The subject of this additional patent is a process for the production of a water-soluble oxazine dye, which is available in that 2, 4, 6-trinitro-1-methoxy-benzene with 3-amino-2-oxy-5-sulfobenzoic acid in the presence of an acid-binding agent condensed.



  The new compound thus obtained is a brown dye that can be used to dye wool and leather.



  <I> Example: </I> In a solution of 1000 parts by weight of water and 132 parts by weight of anhydrous soda, 186.4 parts by weight of 3-amino-2-oxy-5-sulfoberizoic acid are dissolved and mixed with 197 parts by weight of 2, 4, 6-trinitro 1-methoxybenzene stirred at water bath temperature. A fairly vigorous reaction sets in, the liquid turns brown and after a while nitrous acid vapors are emitted. The splitting off of nitrous acid is essentially complete after about 8 to 9 hours of heating.

   The dye solution thus obtained is evaporated, whereby 425 parts by weight of a readily soluble brown dye of the following constitution
EMI0001.0013
    can be obtained. The dye can be used for dyeing wool and leather and is identical to the dye obtained according to the main patent.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines wasser löslichen Oxazinfarbstoffes, dadurch gekenn- zeichnet, dass man 2, 4, 6-Trinitro-l-methoxy- benzol mit 3-Amino-2-oxy-5-sulfobenzoesäure in Gegenwart eines säurebindenden Mittels kondensiert.- Die so erhaltene neue Verbindung ist ein brauner Farbstoff, der zum Färben von Wolle und Leder verwendet werden kann. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Kondensation der Komponenten durch Erwärmen in einer wässrigalkalischen Lösung bewirkt. Claim: Process for the production of a water-soluble oxazine dye, characterized in that 2, 4, 6-trinitro-1-methoxybenzene is condensed with 3-amino-2-oxy-5-sulfobenzoic acid in the presence of an acid-binding agent. The new compound thus obtained is a brown dye that can be used to dye wool and leather. SUBSTANTIAL CLAIM: Process according to patent claim, characterized in that the components are condensed by heating in an aqueous alkaline solution.
CH211053D 1937-11-16 1938-09-26 Process for the preparation of a water-soluble oxazine dye. CH211053A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE211053X 1937-11-16
CH209346T 1938-09-26

Publications (1)

Publication Number Publication Date
CH211053A true CH211053A (en) 1940-08-15

Family

ID=25724709

Family Applications (1)

Application Number Title Priority Date Filing Date
CH211053D CH211053A (en) 1937-11-16 1938-09-26 Process for the preparation of a water-soluble oxazine dye.

Country Status (1)

Country Link
CH (1) CH211053A (en)

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