CH119373A - Process for the production of a new dye. - Google Patents

Process for the production of a new dye.

Info

Publication number
CH119373A
CH119373A CH119373DA CH119373A CH 119373 A CH119373 A CH 119373A CH 119373D A CH119373D A CH 119373DA CH 119373 A CH119373 A CH 119373A
Authority
CH
Switzerland
Prior art keywords
new dye
acid
parts
production
red
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 CH119373A publication Critical patent/CH119373A/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)
  • Coloring (AREA)

Description

  

  Verfahren zur Herstellung eines neuen Farbstoffes.    Es     wurde    gefunden, dass man einen  neuen Farbstoff erhält, wenn man die  jenige     o-Tolylbarbitursäure,    welche aus     o-          Tolylha.rnstoff    und     Malonester    erhalten wird,  mit     diazotierter        4-Chlor-2-amino-l-phenol-5-          sulfosäure    kuppelt und das so erhaltene Pro  dukt mit     Chromformiat    behandelt. Der neue  Farbstoff bildet ein rotbraunes Pulver, löst  sich in verdünnter     Sodalösung    mit oranger  Farbe und erzeugt auf Wolle, aus saurem  Bade gefärbt, echte rotorange Töne.

           Beispiel:            224Teile        4-Chlor-2-amino-l-phenol-5-sulfo-          säure    werden wie üblich     dia.zotiert    und in  ein     Gemiseh    aus 228 Teilen     o-Tolylbarbitur-          säure,   <B>133</B> Teilen 30     %iger    Natronlauge,  170 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.  



  46,3 Teile dieses Farbstoffes werden in  650 Teilen kochendem Wasser gelöst und    mit einer     Chromformiatlösung,    entsprechend  15,2 Teilen     Cr20"    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-Tolylha.rnstoff and malonic ester, is coupled with diazotized 4-chloro-2-amino-1-phenol-5-sulfonic acid and the product thus obtained is treated with chromium formate. The new dye forms a red-brown powder, dissolves in a dilute soda solution with an orange color and produces real red-orange tones on wool dyed from an acid bath.

           Example: 224 parts of 4-chloro-2-amino-1-phenol-5-sulfonic acid are dia.zotiert as usual and divided into a mixture of 228 parts of o-tolylbarbituric acid, 133 parts 30% iger sodium hydroxide solution, 170 parts of soda and 1500 parts of water entered. The clutch starts immediately; stir for a while to complete them. The. The dye formed is then filtered off and dried.



  46.3 parts of this dye are dissolved in 650 parts of boiling water and a chromium formate solution corresponding to 15.2 parts of Cr20 "is added. The mixture is boiled for several hours on the reflux condenser, partially evaporated and the new chromium compound is obtained by filtering, 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 4-Chlor-2-amino- 1-phenol-5-sulfosäure kuppelt und das so erhaltene Produkt mit Chromformiat be handelt. Der neue Farbstoff bildet ein rotbraunes Pulver, löst sich in verdünnter Sodalösung mit oranger Farbe und erzeugt auf Wolle, aus saurem Bade gefärbt, echte rotorange 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 4-chloro-2-amino-1-phenol-5-sulfonic acid and that the product obtained in this way is treated with chromium formate. The new dye forms a red-brown powder, dissolves in a dilute soda solution with an orange color and produces real red-orange tones on wool dyed from an acid bath. .
CH119373D 1924-12-24 1924-12-24 Process for the production of a new dye. CH119373A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH119373T 1924-12-24
CH114283T 1924-12-24

Publications (1)

Publication Number Publication Date
CH119373A true CH119373A (en) 1927-03-16

Family

ID=25708300

Family Applications (1)

Application Number Title Priority Date Filing Date
CH119373D CH119373A (en) 1924-12-24 1924-12-24 Process for the production of a new dye.

Country Status (1)

Country Link
CH (1) CH119373A (en)

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