CH103649A - Process for the production of an indigoid dye of the anthracene series. - Google Patents

Process for the production of an indigoid dye of the anthracene series.

Info

Publication number
CH103649A
CH103649A CH103649DA CH103649A CH 103649 A CH103649 A CH 103649A CH 103649D A CH103649D A CH 103649DA CH 103649 A CH103649 A CH 103649A
Authority
CH
Switzerland
Prior art keywords
production
dye
anthracene series
indigoid dye
blue
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH103649A publication Critical patent/CH103649A/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
    • C09B7/00—Indigoid dyes
    • C09B7/06—Indone-thionapthene indigos

Landscapes

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

Description

  

  Verfahren zur Herstellung eines     indigolden        Farbstoffes    der     Anthra-cenreihe.       Es wurde gefunden,     dass    man einen neuen       indigoiden    Farbstoff der     Anthracenreihe    er  hält, wenn man die     2-3-AntliracIiinonthio-          glykolka,rbonsä,ure    mit     a-Isatinanilid    kon  densiert.  



  Der neue Farbstoff ist in Schwefelsäure  mit grüner Farbe löslich; mit Wasser wird  er in Form blauer Flocken     ausgefällt.    Er  bildet mit     Hydrosulfit    und Natronlauge eine       olivebraune        Küpe,    aus welcher Baumwolle  in vollen, echten, 'blauen Tönen gefärbt  wird.  



  <I>Beispiel:</I>  <B>35</B> Teile 2     -3-Antl-iraeliinontllioglykol-          karbonsäure    werden mit<B>25</B> Teilen     a-Isatin-          anilid,   <B>10</B> Teilen entwässertem     Natrium-          aeetat    und<B>300</B> Teilen     Essigsäureanhydrid     mehrere Stunden am     Rückflusse    gekocht.  Es findet dabei Bildung eines     Küpenfarb-          stoffes    statt, welcher sieh als blaues, kristal-         lines    Pulver abscheidet. Er wird nach dem  Erkalten     abfiltriert   <B>und</B> mit Eisessig und  Wasser nachgewaschen.



  Process for the production of an indigolden dye of the anthracene series. It has been found that a new indigoid dye of the anthracene series is obtained if the 2-3-anthracinonthio-glycolic acid is condensed with α-isatin anilide.



  The new dye is soluble in sulfuric acid with a green color; with water it is precipitated in the form of blue flakes. With hydrosulphite and caustic soda, it forms an olive-brown vat from which cotton is dyed in full, genuine, blue tones.



  <I> Example: </I> <B> 35 </B> parts of 2 -3-antl-iraeliinontllioglycolcarboxylic acid are mixed with <B> 25 </B> parts of a-isatin anilide, <B> 10 </ B> parts of dehydrated sodium acetate and <B> 300 </B> parts of acetic anhydride refluxed for several hours. A vat dye is formed, which is deposited as a blue, crystalline powder. After cooling, it is filtered <B> and </B> washed with glacial acetic acid and water.

Claims (1)

PATENTANSPRUCH: -Verfahren zur Herstellung eines neuen indigoiden Fa.rbstoffes der Anthracenreihe, dadurch gekennzeiclinet, dass die 2 -3-An- thrachinonthioglykolkarbo#nsä,ure mit a-Isa- tinanalid kondensiert wird. PATENT CLAIM: Process for the production of a new indigoid dye of the anthracene series, characterized in that the 2 -3-anthraquinone thioglycol carbonic acid is condensed with α-isatin analide. Der neue Farbstoff ist in Schwefelsäure mit grüner Farbe löslich; mit Wasser wird er in Form blauer Flocken ausgefällt. Er bildet mit Hydrosulfit und Natronlauge eine olivebraune Küpe, aus welcher Baumwolle in vollen, echten, blauen Tönen gefärbt wird. The new dye is soluble in sulfuric acid with a green color; with water it is precipitated in the form of blue flakes. With hydrosulphite and caustic soda, it forms an olive-brown vat from which cotton is dyed in full, real, blue tones.
CH103649D 1923-01-24 1923-01-24 Process for the production of an indigoid dye of the anthracene series. CH103649A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH103649T 1923-01-24

Publications (1)

Publication Number Publication Date
CH103649A true CH103649A (en) 1924-02-16

Family

ID=4362431

Family Applications (1)

Application Number Title Priority Date Filing Date
CH103649D CH103649A (en) 1923-01-24 1923-01-24 Process for the production of an indigoid dye of the anthracene series.

Country Status (1)

Country Link
CH (1) CH103649A (en)

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