CH261279A - Process for the production of a new dye of the anthraquinone series. - Google Patents

Process for the production of a new dye of the anthraquinone series.

Info

Publication number
CH261279A
CH261279A CH261279DA CH261279A CH 261279 A CH261279 A CH 261279A CH 261279D A CH261279D A CH 261279DA CH 261279 A CH261279 A CH 261279A
Authority
CH
Switzerland
Prior art keywords
production
anthraquinone series
new dye
dye
chloroanthraquinone
Prior art date
Application number
Other languages
German (de)
Inventor
Ag Sandoz
Original Assignee
Ag Sandoz
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 Ag Sandoz filed Critical Ag Sandoz
Publication of CH261279A publication Critical patent/CH261279A/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
    • C09B1/00—Dyes with anthracene nucleus not condensed with any other ring
    • C09B1/16—Amino-anthraquinones
    • C09B1/20—Preparation from starting materials already containing the anthracene nucleus
    • C09B1/22—Dyes with unsubstituted amino groups
    • C09B1/24—Dyes with unsubstituted amino groups sulfonated

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

      Zusatzpatent    zum Hauptpatent Nr. 253955.    Verfahren zur Herstellung eines neuen Farbstoffes der     Änthrachinonreihe.       Das vorliegende Patent betrifft ein Ver  fahren zur Herstellung eines neuen Farb  stoffes der     Anthrachinonreihe    und ist da  durch gekennzeichnet, dass man     1-Amino-4-          brom-6-chloranthrachinon-2-sulfonsäure    mit       Benzamid    kondensiert und das Kondensations  produkt hernach verseift.  



  <I>Beispiel:</I>  32 Gewichtsteile     1-amino-4-brom-6-chlor-          anthrachinon-2-sulfonsaures    Kalium werden  mit 13 Gewichtsteilen     Benzamid,    7,2 Gewichts  teilen     Natriumbicarbonat,    0,5 Gewichtsteilen  Kupferbronze in 450 Teilen Wasser unter  Rühren während 2 Stunden auf 80  C erhitzt.  



  Nach erfolgter Kondensation wird das  Reaktionsprodukt in konzentrierter Schwefel  säure verseift und das gewonnene Sulfat auf  übliche Weise aufgearbeitet.  



  Der Farbstoff,     1,4-Diamino-6-chloranthra-          chinon-2-sulfonsäure,    löst sich in konzentrier-         ter    Schwefelsäure mit hellgelber Farbe, die  beim Zusatz von wenig     Paraformaldehyd    in  Blau umschlägt. Er färbt tierische Fasern,  z. B. Wolle, Seide, und künstliche Fasern wie  Nylon in     rotstichig    violetten Tönen von guten       Echtheiten.  



      Additional patent to main patent no. 253955. Process for the production of a new dye of the Änthraquinone series. The present patent relates to a process for the production of a new dye of the anthraquinone series and is characterized by the fact that 1-amino-4-bromo-6-chloroanthraquinone-2-sulfonic acid is condensed with benzamide and the condensation product is saponified afterwards.



  <I> Example: </I> 32 parts by weight of 1-amino-4-bromo-6-chloro-anthraquinone-2-sulfonic acid potassium are mixed with 13 parts by weight of benzamide, 7.2 parts by weight of sodium bicarbonate, 0.5 part by weight of copper bronze in 450 parts Water heated to 80 ° C. for 2 hours with stirring.



  After condensation, the reaction product is saponified in concentrated sulfuric acid and the sulfate obtained is worked up in the usual way.



  The dye, 1,4-diamino-6-chloroanthraquinone-2-sulfonic acid, dissolves in concentrated sulfuric acid with a light yellow color, which turns blue when a little paraformaldehyde is added. It dyes animal fibers, e.g. B. wool, silk, and artificial fibers such as nylon in reddish purple shades of good fastness properties.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Farbstoffes der Anthrachinonreihe, dadurch gekennzeichnet, dass man 1-Amino-4-brom-6- chloranthrachinon-2-sulfonsäure mit Benzamid kondensiert und das Kondensationsprodukt hernach verseift. Der Farbstoff, 1,4-Diamino-6-chloranthra- chinon-2-sulfonsäure, löst sich in konzentrier ter Schwefelsäure mit hellgelber Farbe, die beim Zusatz von wenig Paraformaldehyd in Blau umschlägt. Er färbt tierische Fasern, z. B. PATENT CLAIM: Process for the preparation of a new dye of the anthraquinone series, characterized in that 1-amino-4-bromo-6-chloroanthraquinone-2-sulfonic acid is condensed with benzamide and the condensation product is then saponified. The dye, 1,4-diamino-6-chloroanthraquinone-2-sulfonic acid, dissolves in concentrated sulfuric acid with a light yellow color, which turns blue when a little paraformaldehyde is added. It dyes animal fibers, e.g. B. Wolle, Seide, und künstliche Fasern wie Nylon in rotstichig violetten Tönen von guten Echtheiten. Wool, silk, and artificial fibers such as nylon in reddish purple tones with good fastness properties.
CH261279D 1946-10-10 1946-10-10 Process for the production of a new dye of the anthraquinone series. CH261279A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH261279T 1946-10-10
CH253955T 1948-04-15

Publications (1)

Publication Number Publication Date
CH261279A true CH261279A (en) 1949-04-30

Family

ID=25729812

Family Applications (1)

Application Number Title Priority Date Filing Date
CH261279D CH261279A (en) 1946-10-10 1946-10-10 Process for the production of a new dye of the anthraquinone series.

Country Status (1)

Country Link
CH (1) CH261279A (en)

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