CH265737A - Process for the preparation of a water-soluble dye of the naphthoquinone series. - Google Patents

Process for the preparation of a water-soluble dye of the naphthoquinone series.

Info

Publication number
CH265737A
CH265737A CH265737DA CH265737A CH 265737 A CH265737 A CH 265737A CH 265737D A CH265737D A CH 265737DA CH 265737 A CH265737 A CH 265737A
Authority
CH
Switzerland
Prior art keywords
water
preparation
soluble dye
naphthoquinone series
gray
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 CH265737A publication Critical patent/CH265737A/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
    • C09B13/00—Oxyketone dyes
    • C09B13/02—Oxyketone dyes of the naphthalene series, e.g. naphthazarin

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

Description

  

      Verfahren   <B>zur Darstellung eines wasserlöslichen Farbstoffes der</B>     Naphthochinonreihe.       Das vorliegende Patent betrifft. ein Ver  fahren zur Herstellung eines wasserlöslichen  Farbstoffes der     Naphthochinonreihe    und ist  dadurch gekennzeichnet, dass man     1-'.Vaphthyl-          amin-6-sulfonsäure    mit     3,7-Dibrom-5-amino-8-          oxy-1,4-naphthochinonimid-(1.)    kondensiert.

    <I>Beispiel:</I>  .Man löst. 11,5 g     1-Na.phthylamin-6-sulfon-          säure    in     ?10    cm' Wasser unter Zusatz von 10 g  Soda auf, setzt dazu 160 g     Isopropylalkohol,     20 g     Natriumacetat    und<B>17,2</B> g     3,7-Dibrom-5-          amino-8-oxy-1,4-naphthochinonimid-(1)    und  erwärmt während 14 Stunden unter gutem  Rühren auf 80". Dann destilliert man den     Iso-          propylalkohol    ab, verdünnt mit 200 cm' Was  ser und filtriert vom vorhandenen Rückstand  ab. Der Farbstoff wird durch Zusatz von 25 g  Kochsalz ausgefällt und nach dem Abkühlen  filtriert.

      Die neue Verbindung ist ein dunkles Pul  ver, das in Wasser mit     violettblauer    Farbe  löslich ist und Wolle in graublauer Nuance  färbt. Nach dem     3Tetaehromverfahren    gefärbt  werden graue Färbungen erhalten, die eine  sehr gute     Carbonisiereehtheit    aufweisen.



      Process <B> for the preparation of a water-soluble dye of the </B> naphthoquinone series. The present patent relates to. a process for the production of a water-soluble dye of the naphthoquinone series and is characterized in that 1 - '. Vaphthylamine-6-sulfonic acid with 3,7-dibromo-5-amino-8-oxy-1,4-naphthoquinonimide ( 1.) condensed.

    <I> Example: </I>. You solve. 11.5 g of 1-Na.phthylamine-6-sulfonic acid in 10 cm 'of water with the addition of 10 g of soda, add 160 g of isopropyl alcohol, 20 g of sodium acetate and 17.2 g 3,7-Dibromo-5-amino-8-oxy-1,4-naphthoquinonimide- (1) and heated to 80 "for 14 hours with thorough stirring. The isopropyl alcohol is then distilled off and diluted with 200 cm of water The residue is filtered off and the dye is precipitated by adding 25 g of sodium chloride and, after cooling, filtered.

      The new compound is a dark powder that is soluble in water with a violet-blue color and dyes wool in a gray-blue shade. Dyed according to the 3Tetaehrom process, gray colorations are obtained which have very good carbonization resistance.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines wasser- lösliehen Farbstoffes der Naphthochinonreihe, dadurch gekennzeichnet, dass man 1-Naphthyl- amin-6-sulfonsäure mit 3,7-Dibrom-5-amino-8- oxy-1,4-naphthochinonimid-(1) kondensiert. Die neue Verbindung ist ein dunkles Pul ver, das sich in Wasser mit violettblauer Farbe löst und \'olle in graublauer Nuance färbt. Nach dem Metachromverfahren gefärbt werden graue Färbungen erhalten, die eine sehr gute Carbonisierechtheit aufweisen. PATENT CLAIM: Process for the preparation of a water-soluble dye of the naphthoquinone series, characterized in that 1-naphthylamine-6-sulfonic acid is mixed with 3,7-dibromo-5-amino-8-oxy-1,4-naphthoquinonimide- (1 ) condensed. The new compound is a dark powder that dissolves in water with a violet-blue color and stains \ 'olle in a gray-blue shade. Dyed according to the metachrome process, gray colorations are obtained which have very good carbonization fastness.
CH265737D 1947-07-15 1947-07-15 Process for the preparation of a water-soluble dye of the naphthoquinone series. CH265737A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH265737T 1947-07-15
CH260578T 1947-07-15

Publications (1)

Publication Number Publication Date
CH265737A true CH265737A (en) 1949-12-15

Family

ID=25730320

Family Applications (1)

Application Number Title Priority Date Filing Date
CH265737D CH265737A (en) 1947-07-15 1947-07-15 Process for the preparation of a water-soluble dye of the naphthoquinone series.

Country Status (1)

Country Link
CH (1) CH265737A (en)

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