CH210737A - Process for the production of a readily soluble acidic alizarin dye. - Google Patents

Process for the production of a readily soluble acidic alizarin dye.

Info

Publication number
CH210737A
CH210737A CH210737DA CH210737A CH 210737 A CH210737 A CH 210737A CH 210737D A CH210737D A CH 210737DA CH 210737 A CH210737 A CH 210737A
Authority
CH
Switzerland
Prior art keywords
production
readily soluble
soluble acidic
alizarin dye
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 CH210737A publication Critical patent/CH210737A/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. 205537.    Verfahren zur Herstellung eines leichtlöslichen sauren     Alizarinfarbstoffes.       Die vorliegende Erfindung     betrifft    die Her  stellung eines neuen, leichtlöslichen sauren       Alizarinfarbstoffes    und ist dadurch gekenn  zeichnet, dass man     1-Amino-4-mesidinoanthra-          ohirron-2-sulfosäirre    durch Behandlung mit       Lithiumcarbonat    in das     Lithiumsalz    überführt.

    <I>Beispiel:</I>  Der Farbstoff der Formel  
EMI0001.0009     
    wird mit Wasser zu einer homogenen Paste  verrührt und     portionenweise    unter gutem Rüh-         ren    mit     Lithiurucarbonat    so lange versetzt,  bis die freie     Sulfosäure    in das entsprechende       Lithiumsalz    übergeführt ist. Die so erhaltene  neutrale     bezw.    schwach alkalische Paste wird  nun getrocknet und gemahlen.  



  Das so erhaltene     Lithiumsalz    stellt ein  dunkelblaues Pulver dar. Es löst sich zu 37  Teilen in 1000 Teilen heissem Wasser, wäh  rend sich vom entsprechenden     Natriumsalz    in  heissem Wasser nur 10 Teile lösen.



      Additional patent to main patent no. 205537. Process for the production of a readily soluble acidic alizarin dye. The present invention relates to the Her position of a new, easily soluble acidic alizarin dye and is characterized in that 1-amino-4-mesidinoanthrone-2-sulfonic acid is converted into the lithium salt by treatment with lithium carbonate.

    <I> Example: </I> The dye of the formula
EMI0001.0009
    is mixed with water to form a homogeneous paste and lithium carbonate is added in portions with thorough stirring until the free sulfonic acid has been converted into the corresponding lithium salt. The neutral respectively obtained in this way. weakly alkaline paste is now dried and ground.



  The lithium salt thus obtained is a dark blue powder. 37 parts of it dissolve in 1000 parts of hot water, while only 10 parts of the corresponding sodium salt dissolve in hot water.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen leichtlöslichen, sauren Alizarinfarbstoffes, da durch gekennzeichnet, dass man 1-Amino-4- mesidinoanthrachirion-2-sulfosäure durch Be handlung mit Lithiumcarbonat in das Lithium- salz überführt. Das Lithiumsalz stellt ein dunkelblaues Pulver dar, von welchem sich 37 Teile in 1000 Teilen heissem Wasser lösen. PATENT CLAIM: Process for the production of a new, easily soluble, acidic alizarin dye, characterized in that 1-amino-4-mesidinoanthraquinone-2-sulfonic acid is converted into the lithium salt by treatment with lithium carbonate. The lithium salt is a dark blue powder, 37 parts of which dissolve in 1000 parts of hot water.
CH210737D 1938-04-29 1938-04-29 Process for the production of a readily soluble acidic alizarin dye. CH210737A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH210737T 1938-04-29
CH205537T 1938-04-29

Publications (1)

Publication Number Publication Date
CH210737A true CH210737A (en) 1940-07-31

Family

ID=25724195

Family Applications (1)

Application Number Title Priority Date Filing Date
CH210737D CH210737A (en) 1938-04-29 1938-04-29 Process for the production of a readily soluble acidic alizarin dye.

Country Status (1)

Country Link
CH (1) CH210737A (en)

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