CH261276A - 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
CH261276A
CH261276A CH261276DA CH261276A CH 261276 A CH261276 A CH 261276A CH 261276D A CH261276D A CH 261276DA CH 261276 A CH261276 A CH 261276A
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 CH261276A publication Critical patent/CH261276A/en

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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

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

Description

  

      Zusatzpatent    zum Hauptpatent Nr. 253955.    Verfahren zur Herstellung eines neuen Farbstoffes der     Anthraehinonreihe.       Das vorliegende Patent betrifft ein Ver  fahren zur Herstellung eines neuen Farb  stoffes der     Anthrachinonreihe,    welches da  durch gekennzeichnet ist, dass man     1-Amino-          4,7-dichloranthraehinon-2-sulfonsäure    mit     p-          Toluolsulfamid    kondensiert und das Konden  sationsprodukt hernach verseift.

      <I>Beispiel:</I>    27 Gewichtsteile     1-amino-4,7-diehloranthra-          chinon-2-sulfonsaures    Natrium werden mit  14,4 Gewichtsteilen     p-Toluolsulfamid,    6,4 Ge  wichtsteilen     Natriumbicarbonat,    0,4 Gewichts  teilen Kupferbronze und 0,2 Gewichtsteilen       Kupferchlorür    in 350 Teilen Wasser unter       Rühren    während 4 Stunden auf 80  C er  hitzt.  



  Nach erfolgter Kondensation wird das  Reaktionsprodukt auf übliche Weise aufge  arbeitet und durch     Digerieren    in konzentrier  ter Schwefelsäure bei gewöhnlicher oder er  höhter Temperatur verseift. Durch Ausladen  in ein     Wasser-Eis-Gemisch    gewinnt man die  1,4-     Diamino    - 7 -     chloranthrachinon    - 2 -     sulfon-          säure.     



  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     rotstichig    violetten Tönen von guten  E     chtheiten.  



      Additional patent to the main patent No. 253955. Process for the production of a new dye of the anthraehinone series. The present patent relates to a process for producing a new dye of the anthraquinone series, which is characterized by the fact that 1-amino-4,7-dichloroanthraehinone-2-sulfonic acid is condensed with p-toluenesulfamide and the condensation product is then saponified.

      <I> Example: </I> 27 parts by weight of 1-amino-4,7-diehloranthraquinone-2-sulfonic acid sodium are mixed with 14.4 parts by weight of p-toluenesulfamide, 6.4 parts by weight of sodium bicarbonate, 0.4 parts by weight of copper bronze and 0.2 parts by weight of copper chloride in 350 parts of water with stirring for 4 hours at 80 ° C.



  After condensation has taken place, the reaction product is worked up in the usual way and saponified by digestion in concentrated sulfuric acid at the usual or elevated temperature. The 1,4-diamino-7-chloranthraquinone-2-sulfonic acid is obtained by unloading it 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 man-made fibers such as nylon in reddish purple tones of good authenticity.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Farbstoffes der Anthrachinonreihe, dadurch gekennzeichnet, dass man 1-Amino-4,7-diehlor- anthrachinon-2-sulfonsäure mit p-Toluolsulf- amid kondensiert und das Kondensationspro dukt 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. PATENT CLAIM: A process for the production of a new dye of the anthraquinone series, characterized in that 1-amino-4,7-diehloranthraquinone-2-sulfonic acid is condensed with p-toluenesulfamide and the condensation product is subsequently saponified. 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. 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.
CH261276D 1946-10-10 1946-10-10 Process for the production of a new dye of the anthraquinone series. CH261276A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH261276T 1946-10-10
CH253955T 1948-04-15

Publications (1)

Publication Number Publication Date
CH261276A true CH261276A (en) 1949-04-30

Family

ID=25729809

Family Applications (1)

Application Number Title Priority Date Filing Date
CH261276D CH261276A (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) CH261276A (en)

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