CH210736A - Process for the preparation of an easily soluble acidic alizarin dye. - Google Patents

Process for the preparation of an easily soluble acidic alizarin dye.

Info

Publication number
CH210736A
CH210736A CH210736DA CH210736A CH 210736 A CH210736 A CH 210736A CH 210736D A CH210736D A CH 210736DA CH 210736 A CH210736 A CH 210736A
Authority
CH
Switzerland
Prior art keywords
preparation
easily soluble
soluble acidic
dye
alizarin dye
Prior art date
Application number
Other languages
German (de)
Inventor
Sandoz A G
Original Assignee
Sandoz Ag
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 Sandoz Ag filed Critical Sandoz Ag
Publication of CH210736A publication Critical patent/CH210736A/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
    • C09B1/346—Dyes with amino groups substituted by hydrocarbon radicals substituted by aryl groups sulfonated only sulfonated in a substituent

Landscapes

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

Description

  

      Zusatzpatent    zum Hauptpatent Nr. 205537.    Verfahren zur Herstellung eines leichtlöslichen sauren     Alizarinfarbstoffes.       Die vorliegende Erfindung     betrifft    die  Herstellung eines neuen, leicht löslichen sau  ren Alizarinfarbstoffes und ist dadurch ge  kennzeichnet, dass man die freie     Sulfosäure     des Farbstoffes der Formel  
EMI0001.0005     
    durch Behandlung mit     Lithiumcarbonat    in  das     Lithiumsalz    überführt.

      <I>Beispiel:</I>  Der Farbstoff der Formel  
EMI0001.0008     
    wird mit Wasser zu einer homogenen Paste  verrührt und     portionenweise    unter gutem  Rühren so lange mit     Lithiumcarbonat    ver  setzt, bis die freie     Sulfosäure    in das ent  sprechende     Lithiumsalz    übergeführt ist. Die      so erhaltene neutrale     bezw.    schwach alka  lische Paste wird nun getrocknet und ge  mahlen.  



  Das auf diese Weise hergestellte     Lithium-          salz    ist ein dunkelblaues Pulver, von welchem  in 1000 Teilen lochendem Wasser 40 Teile  löslich sind, während das entsprechende Na  triumsalz nur zu 25 Teilen darin löslich ist.



      Additional patent to main patent no. 205537. Process for the production of a readily soluble acidic alizarin dye. The present invention relates to the preparation of a new, readily soluble acidic alizarin dye and is characterized in that the free sulfonic acid of the dye of the formula
EMI0001.0005
    converted into the lithium salt by treatment with lithium carbonate.

      <I> Example: </I> The dye of the formula
EMI0001.0008
    is mixed with water to form a homogeneous paste and added in portions with lithium carbonate while stirring well until the free sulfonic acid is converted into the corresponding lithium salt. The neutral respectively obtained in this way. weakly alkaline paste is now dried and ground.



  The lithium salt produced in this way is a dark blue powder of which 40 parts are soluble in 1000 parts of piercing water, while the corresponding sodium salt is only 25 parts soluble in it.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen, leichtlöslichen sauren Alizarinfarbstoffes, da durch gekennzeichnet, dass man die freie Sulfosäure des Farbstoffes der Formel EMI0002.0007 durch Behandlung mit Lithiumcarbonat in das Lithiumsalz überführt. Das Lithiumsalz ist ein dunkelblaues Pulver, von welchem 40 Teile in 1000 Teilen heissem Wasser löslich sind. PATENT CLAIM: Process for the preparation of a new, easily soluble acidic alizarin dye, characterized in that one uses the free sulfonic acid of the dye of the formula EMI0002.0007 converted into the lithium salt by treatment with lithium carbonate. The lithium salt is a dark blue powder, 40 parts of which are soluble in 1000 parts of hot water.
CH210736D 1938-04-29 1938-04-29 Process for the preparation of an easily soluble acidic alizarin dye. CH210736A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH205537T 1938-04-29
CH210736T 1938-04-29

Publications (1)

Publication Number Publication Date
CH210736A true CH210736A (en) 1940-07-31

Family

ID=25724194

Family Applications (1)

Application Number Title Priority Date Filing Date
CH210736D CH210736A (en) 1938-04-29 1938-04-29 Process for the preparation of an easily soluble acidic alizarin dye.

Country Status (1)

Country Link
CH (1) CH210736A (en)

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