CH179679A - Process for the preparation of a new millfast anthraquinone dye. - Google Patents

Process for the preparation of a new millfast anthraquinone dye.

Info

Publication number
CH179679A
CH179679A CH179679DA CH179679A CH 179679 A CH179679 A CH 179679A CH 179679D A CH179679D A CH 179679DA CH 179679 A CH179679 A CH 179679A
Authority
CH
Switzerland
Prior art keywords
new
millfast
preparation
anthraquinone dye
dye
Prior art date
Application number
Other languages
German (de)
Inventor
Sandoz Chemische Fabri Vormals
Original Assignee
Chem Fab Vormals 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 Chem Fab Vormals Sandoz filed Critical Chem Fab Vormals Sandoz
Publication of CH179679A publication Critical patent/CH179679A/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
    • C09B1/26—Dyes with amino groups substituted by hydrocarbon radicals
    • C09B1/32—Dyes with amino groups substituted by hydrocarbon radicals substituted by aryl groups
    • C09B1/34—Dyes with amino groups substituted by hydrocarbon radicals substituted by aryl groups sulfonated
    • C09B1/343—Dyes with amino groups substituted by hydrocarbon radicals substituted by aryl groups sulfonated only sulfonated in the anthracene nucleus

Landscapes

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

Description

  

      Zusatzpatent    zum Hauptpatent Nr. 169707.    Verfahren zur Darstellung eines neuen     walkechten        Anthrachinonfarbstoifes.       Das vorliegende Verfahren betrifft die  Darstellung eines neuen,     walkechten        Anthra-          chinonfarbstoffes    und ist dadurch gekenn  zeichnet, dass man     1-Amino-2-sulfo-4(3'-          chloi-phenyl)aminoantlirachinon    in schwach  saurer wässeriger Lösung mit Formaldehyd  behandelt.  



  <I>Beispiel:</I>  Man rührt 10 Teile des     Natriumsalzes       des     1-Amino-2-sulfo-4(3'-ehlorphenyl)amino-          anthrachinons    mit 200 'feilen Wasser, 2 Tei  len Formaldehyd von 40%, 2 Teilen Essig  säure auf dem siedenden Wasserbad, bis eine  in Wasser gezogene Probe nicht mehr grüner  wird. Der Farbstoff wird gefällt, abgesaugt  und durch     Umlösen    gereinigt.  



  Der neue Farbstoff färbt Wolle licht  und     walkecht    blau und besitzt die Formel  
EMI0001.0014     
    Denselben Farbstoff erhält man, wenn in       Jiesem    Beispiel die Essigsäure durch     kon-          #rte    Salzsäure ersetzt wird.



      Additional patent to main patent no. 169707. Process for the preparation of a new whale-fast anthraquinone dye. The present process relates to the preparation of a new, millfast anthraquinone dye and is characterized in that 1-amino-2-sulfo-4 (3'-chloi-phenyl) aminoantlirachinone is treated with formaldehyde in a weakly acidic aqueous solution.



  <I> Example: </I> 10 parts of the sodium salt of 1-amino-2-sulfo-4 (3'-chlorophenyl) amino-anthraquinone are stirred with 200 parts of water, 2 parts of 40% formaldehyde, 2 parts Acetic acid on the boiling water bath until a sample taken in water no longer turns green. The dye is precipitated, suctioned off and purified by dissolving.



  The new dye dyes wool light and millfast blue and has the formula
EMI0001.0014
    The same dye is obtained if in this example the acetic acid is replaced by hydrochloric acid.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen walkechten Anthrachinonfarbstoffes, da durch gekennzeichnet, dass man 1-Amino-2- sulfo-4(d'-chlorphenyl)aminoanthrachinon in schwach saurer wässeriger Lösung mit Form- aldehvd behandelt. Der neue Farbstoff färbt Wolle licht- und walkecht blau und besitzt die Formel EMI0002.0007 PATENT CLAIM: A process for the preparation of a new millfast anthraquinone dye, characterized in that 1-amino-2-sulfo-4 (d'-chlorophenyl) aminoanthraquinone is treated with formaldehyde in a weakly acidic aqueous solution. The new dye dyes wool lightfast and millfast blue and has the formula EMI0002.0007
CH179679D 1934-01-17 1934-01-17 Process for the preparation of a new millfast anthraquinone dye. CH179679A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH169707T 1934-01-17
CH179679T 1934-01-17

Publications (1)

Publication Number Publication Date
CH179679A true CH179679A (en) 1935-09-15

Family

ID=25718813

Family Applications (1)

Application Number Title Priority Date Filing Date
CH179679D CH179679A (en) 1934-01-17 1934-01-17 Process for the preparation of a new millfast anthraquinone dye.

Country Status (1)

Country Link
CH (1) CH179679A (en)

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