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CH119374A - Process for the production of a new dye. - Google Patents

Process for the production of a new dye.

Info

Publication number
CH119374A
CH119374A CH119374DA CH119374A CH 119374 A CH119374 A CH 119374A CH 119374D A CH119374D A CH 119374DA CH 119374 A CH119374 A CH 119374A
Authority
CH
Switzerland
Prior art keywords
new dye
acid
parts
production
new
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 CH119374A publication Critical patent/CH119374A/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
    • C09B45/00—Complex metal compounds of azo dyes
    • C09B45/02—Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
    • C09B45/14—Monoazo compounds
    • C09B45/16—Monoazo compounds containing chromium

Landscapes

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

Description

  

      Zusatzpatent    zum Hauptpatent Nr. 114283.    Verfahren zur Herstellung eines neuen     Farbstoffes.       <B>Es</B> wurde gefunden, dass man einen  neuen Farbstoff erhält, wenn man die  jenige     o-Tolylbarbitursäure,    welche aus     o-          Tolylharnstoff    und     Malonester    erhalten wird,  mit     diazotierter        6-Nitro-2-amino-l-phenol-4.          sulfosäure    kuppelt und das so erhaltene Pro  dukt mit     Chromformiat    behandelt.

   Der neue  Farbstoff bildet ein braunes Pulver, löst  sich in verdünnter     Sodalösung    mit oranger  Farbe und erzeugt auf Wolle, aus saurem  Bade gefärbt, echte orange Töne.    <I>Beispiel:</I>         ?3iTeile        6-Nitro-2-amino-l-phenol-4-sulfo-          säure.    werden wie üblich     diazotiert    und in  ein Gemisch aus 228 Teilen     o-Tolylbarbitur-          säure,    133 Teilen 30     %iger    Natronlauge,  <B>1.70</B> Teilen Soda und 1500 Teilen Wasser  eingetragen. Die Kupplung setzt sofort ein;  zu ihrer Vervollständigung rührt man noch  einige Zeit. Der gebildete Farbstoff wird  dann filtriert und getrocknet.  



  47,3 Teile dieses Farbstoffes werden in       6:50    Teilen kochendem Wasser gelöst und    mit einer     Chromförmiatlösung,    entsprechend  15,2 Teilen     Cr,03,    versetzt. Man kocht  mehrere Stunden am     Rückflusskühler,     dampft teilweise ein und gewinnt die neue  Chromverbindung durch Filtrieren, gegebe  nenfalls unter vorherigem     Aussalzen.  



      Additional patent to the main patent No. 114283. Process for the production of a new dye. It has been found that a new dye is obtained if the o-tolylbarbituric acid, which is obtained from o-tolylurea and malonic ester, is mixed with diazotized 6-nitro-2-amino-1-phenol- 4th sulfonic acid and the product thus obtained is treated with chromium formate.

   The new dye forms a brown powder, dissolves in a dilute soda solution with an orange color and produces real orange tones on wool dyed from an acid bath. <I> Example: </I>? 3 parts 6-nitro-2-amino-1-phenol-4-sulfonic acid. are diazotized as usual and introduced into a mixture of 228 parts of o-tolylbarbituric acid, 133 parts of 30% strength sodium hydroxide solution, 1.70 parts of soda and 1500 parts of water. The clutch starts immediately; stir for a while to complete them. The dye formed is then filtered and dried.



  47.3 parts of this dye are dissolved in 6:50 parts of boiling water and a chromium formate solution, corresponding to 15.2 parts of Cr, 03, is added. It is boiled for several hours on the reflux condenser, partially evaporated and the new chromium compound is obtained by filtration, if necessary with prior salting out.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man diejenige o-Tolylbarbitursäure, welche aus o-Tolylharnstoff und Malonester erhal ten wird, mit diazotierter 6-Nitro-2-amino- 1-phenol-4-sulfosäure kuppelt und das so erhaltene Produkt mit Chromförmiat be handelt. Der neue Farbstoff bildet ein braunes Pulver, löst sich in verdünnter Sodalösung mit oranger Farbe und erzeugt auf Wolle, aus saurem Bade gefärbt, echte orange Töne. PATENT CLAIM: Process for the preparation of a new dye, characterized in that that o-tolylbarbituric acid which is obtained from o-tolylurea and malonic ester is coupled with diazotized 6-nitro-2-amino-1-phenol-4-sulfonic acid and that the product thus obtained is treated with chromium formate. The new dye forms a brown powder, dissolves in a dilute soda solution with an orange color and produces real orange tones on wool dyed from an acid bath.
CH119374D 1924-12-24 1924-12-24 Process for the production of a new dye. CH119374A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH114283T 1924-12-24
CH119374T 1924-12-24

Publications (1)

Publication Number Publication Date
CH119374A true CH119374A (en) 1927-03-16

Family

ID=25708301

Family Applications (1)

Application Number Title Priority Date Filing Date
CH119374D CH119374A (en) 1924-12-24 1924-12-24 Process for the production of a new dye.

Country Status (1)

Country Link
CH (1) CH119374A (en)

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