CH261278A - 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
CH261278A
CH261278A CH261278DA CH261278A CH 261278 A CH261278 A CH 261278A CH 261278D A CH261278D A CH 261278DA CH 261278 A CH261278 A CH 261278A
Authority
CH
Switzerland
Prior art keywords
production
anthraquinone series
new dye
dye
sulfuric acid
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 CH261278A publication Critical patent/CH261278A/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

Description

  

      Zusatzpatent    zum Hauptpatent Nr. 253955.    Verfahren zur Herstellung eines neuen Farbstoffes der     Anthrachinonreihe.       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    - 6,7 -     dichloranthrachinon-2-sulfonsäure     mit     p-Toluolsulfamid    kondensiert und das  Kondensationsprodukt hernach verseift.  



  <I>Beispiel:</I>  30 Gewichtsteile     1-Amino-4-brom-6,7-di-          chloranthrachinon-2-sulfonsäure    werden mit  18 Gewichtsteilen     p-Toluolsulfamid,    8,8 Ge  wichtsteilen     Natriumbicarbonat    und 0,5 Ge  wichtsteilen     Kupferchlorür    in 350 Teilen  Wasser unter Rühren während 2 Stunden auf  70  und 2 Stunden auf 80  erhitzt.  



  Nach erfolgter Kondensation wird das  Reaktionsprodukt auf übliche Weise aufgear  beitet und durch     Digerieren    in konzentrierter  Schwefelsäure bei gewöhnlicher oder erhöhter  Temperatur verseift. Durch Ausladen in ein       Wasser-Eis-Gemisch    gewinnt man die     1,4-Di-          amino-6,7-dichloranthrachinon-2-sulfonsäure.     



  Man erhält sie auch durch Zusatz von  wenig Wasser zur schwefelsauren Lösung,    worauf ihr schwefelsaures Salz ausfällt, das  auf übliche Weise in die Säure übergeführt  werden kann.  



  Der Farbstoff löst sich in konzentrierter  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 rotstickig violetten Tönen von guten       Echtheiten.  



      Additional patent to main patent No. 253955. Process for the production of a new dye of the anthraquinone 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-6,7-dichloroanthraquinone-2-sulfonic acid is condensed with p-toluenesulfamide and the condensation product is saponified afterwards .



  <I> Example: </I> 30 parts by weight of 1-amino-4-bromo-6,7-dichloranthraquinone-2-sulfonic acid are mixed with 18 parts by weight of p-toluenesulfamide, 8.8 parts by weight of sodium bicarbonate and 0.5 parts by weight Copper chloride in 350 parts of water is heated to 70 and 2 hours to 80 for 2 hours with stirring.



  After condensation has taken place, the reaction product is worked up in the usual way and saponified by digestion in concentrated sulfuric acid at normal or elevated temperature. The 1,4-di-amino-6,7-dichloroanthraquinone-2-sulfonic acid is obtained by unloading into a water-ice mixture.



  They are also obtained by adding a little water to the sulfuric acid solution, whereupon their sulfuric acid salt precipitates, which can be converted into the acid in the usual way.



  The dye 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 red-embroidered violet shades of good fastness properties.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Farbstoffes der Anthrachin.onreihe, dadurch gekennzeichnet, dass man 1-Amino-4-brom- 6,7-dichloranthrachinon-2-sulfonsäure mit p- Toluolsulfamid kondensiert und das Konden sationsprodukt hernach verseift. Der Farbstoff löst sich in konzentrierter 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 rotstickig violetten Tönen von guten E chtheiten. PATENT CLAIM: Process for the production of a new dye of the anthraquinone series, characterized in that 1-amino-4-bromo-6,7-dichloroanthraquinone-2-sulfonic acid is condensed with p-toluenesulfamide and the condensation product is saponified afterwards. The dye 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 red-embroidered purple tones of good authenticity.
CH261278D 1946-10-10 1946-10-10 Process for the production of a new dye of the anthraquinone series. CH261278A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH261278T 1946-10-10
CH253955T 1948-04-15

Publications (1)

Publication Number Publication Date
CH261278A true CH261278A (en) 1949-04-30

Family

ID=25729811

Family Applications (1)

Application Number Title Priority Date Filing Date
CH261278D CH261278A (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) CH261278A (en)

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