CH119372A - Process for the production of a new dye. - Google Patents

Process for the production of a new dye.

Info

Publication number
CH119372A
CH119372A CH119372DA CH119372A CH 119372 A CH119372 A CH 119372A CH 119372D A CH119372D A CH 119372DA CH 119372 A CH119372 A CH 119372A
Authority
CH
Switzerland
Prior art keywords
new dye
acid
production
parts
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 CH119372A publication Critical patent/CH119372A/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

  

  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        2-Amino-l-phenol-4=sulfo-          säure    kuppelt und das so erhaltene Pro  dukt mit     Chromformiat    behandelt. Der neue  Farbstoff bildet ein braunes Pulver, löst  sieh in verdünnter     Sodalösung    mit gelber  Farbe und erzeugt auf Wolle, aus saurem  Bade gefärbt, echte gelbe Töne.  



  <I>Beispiel:</I>  190 Teile     2-Amino-l-plienol-4-sulfo-          säure    werden wie üblich     diazotiert    und in  ein Gemisch aus 228 Teilen     o-Tolylbarbitur-          säure,        133    Teilen 30     %iger    Natronlauge,       1.70    Teilen Soda und 1500 Teilen Wasser  eingetragen. Die Kupplung setzt sofort ein;       zti    ihrer Vervollständigung rührt man noch  einige Zeit. Der gebildete Farbstoff wird  dann filtriert und getrocknet.  



  42,9 Teile dieses Farbstoffes werden in       fi:>(1    Teilen kochendem Wasser gelöst und    mit einer     Chromformiatlösung,    entsprechend  15,2 Teilen     Cr2O3,    versetzt. Man kocht  mehrere Stunden am     Rückflusskühler,     dampft teilweise ein und gewinnt die neue  Chromverbindung durch Filtrieren, gegebe  nenfalls unter vorherigem     Aussalzen.    .



  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 2-amino-1-phenol-4-sulfonic acid couples and the product thus obtained is treated with chromium formate. The new dye forms a brown powder, dissolves in a dilute soda solution with a yellow color and produces real yellow tones on wool dyed from an acid bath.



  <I> Example: </I> 190 parts of 2-amino-1-plienol-4-sulfonic acid are diazotized as usual and converted into a mixture of 228 parts of o-tolylbarbituric acid, 133 parts of 30% sodium hydroxide solution, 1.70 parts Soda and 1500 parts of water entered. The clutch starts immediately; We will stir for some time to complete it. The dye formed is then filtered and dried.



  42.9 parts of this dye are dissolved in 1 part of boiling water and a chromium formate solution, corresponding to 15.2 parts of Cr2O3, is added. It is boiled for several hours on the reflux condenser, partially evaporated and the new chromium compound is recovered by filtering possibly with salting out beforehand.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man diejenige ö-Tolylbarbitursäure, welche aus o-Tolylharnstoff und Malonester erhal ten wird, -mit diazotierter 2-Amino-l- phenol-4-sulfosäure kuppelt und das so erhaltene Produkt mit Chromformiat be handelt. Der neue Farbstoff bildet ein braunes Pulver, löst sich in verdünnter Sodalösung mit gelber Farbe und erzeugt auf Wolle, aus saurem Bade gefärbt, echte gelbe Töne. PATENT CLAIM: Process for the preparation of a new dye, characterized in that that otolylbarbituric acid which is obtained from o-tolylurea and malonic ester is coupled with diazotized 2-amino-1-phenol-4-sulfonic acid and the product thus obtained treated with chromium formate. The new dye forms a brown powder, dissolves in a dilute soda solution with a yellow color and produces true yellow tones on wool dyed from an acid bath.
CH119372D 1924-12-24 1924-12-24 Process for the production of a new dye. CH119372A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH119372T 1924-12-24
CH114283T 1924-12-24

Publications (1)

Publication Number Publication Date
CH119372A true CH119372A (en) 1927-03-16

Family

ID=25708299

Family Applications (1)

Application Number Title Priority Date Filing Date
CH119372D CH119372A (en) 1924-12-24 1924-12-24 Process for the production of a new dye.

Country Status (1)

Country Link
CH (1) CH119372A (en)

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