CH129482A - Process for the production of a new azo dye. - Google Patents

Process for the production of a new azo dye.

Info

Publication number
CH129482A
CH129482A CH129482TA CH129482A CH 129482 A CH129482 A CH 129482A CH 129482T A CH129482T A CH 129482TA CH 129482 A CH129482 A CH 129482A
Authority
CH
Switzerland
Prior art keywords
red
azo dye
new
production
dye
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
Priority to CH129482T priority Critical patent/CH129482A/en
Publication of CH129482A publication Critical patent/CH129482A/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)
  • Paper (AREA)

Description

  

  Verfahren zur Herstellung eines neuen     Azofarbstoffes.       Es wurde gefunden, dass man einen neuen       Azofarbstoff    erhält, wenn man das     3-Methyl-          5-pyrazolon    mit der nitrierten     Diazoverbin-          dung    aus     1-Amino-2-naphtho(-4-sulfosäure     kuppelt und das erhaltene Produkt mit     Fluor-          ehrom    und hierauf mit verdünnten Alkalien  behandelt. Der neue Farbstoff stellt ein  braunes Pulver dar, welches sich in Wasser  mit orangeroter, in 10     o/oiger    Natronlauge  mit roter und in konzentrierter Schwefelsäure  mit gelber Farbe löst.

   Er färbt Wolle aus  saurem Bade in roten Tönen von vorzüglicher  Lichtechtheit.    <I>Beispiel:</I>    In eine Mischung aus 10 Teilen     3-Methyl-          5-pyrazolon,    4 Teilen     Natriumhydroxyd,    30  Teilen Soda und 100 Teilen Wasser trägt  man bei 5  53,7 Teile der nitrierten     Diazo-          verbindung    der     1-Amino-2-naphthol-4-sulfo-          säure    ein. Man rührt bis die     Diazoverbindung     verschwunden ist, salzt aus und filtriert.  



  41,5 Teile des so erhaltenen Farbstoffes  werden nun in 1100 Teilen Wasser kochend  gelöst, mit 22,8 Teilen     Chromoxyd    in     Form       einer wässerigen     Fluorchromlösung    versetzt  und unter Zusatz von Glaspulver längere  Zeit rückfliessend gekocht.  



  Die neue Chromverbindung scheidet sich  hierbei in fein kristallinischer, wasserunlös  licher Form aus. Dieselbe wird     abfiltriert,     mit Wasser gewaschen, hierauf in 500 Teilen  einer lauwarmen     1,2 /oigen        Natriumhydroxyd-          lösung    gelöst.

   Aus dieser Lösung gewinnt  man den nunmehr löslichen Farbstoff durch  schwaches     Ansäuern    mit Essigsäure und       Aussalzen.    Dieser stellt getrocknet ein brau  nes Pulver dar, löst sich in Wasser mit  orangeroter, in 10     o/oiger    Natronlauge mit  roter, in konzentrierter Schwefelsäure mit  gelber Farbe und färbt Wolle, vorzugsweise  aus schwefelsaurem Färbebade, in roten Tönen  von     vorzügliehen    Echtheitseigenschaften an.



  Process for the production of a new azo dye. It has been found that a new azo dye is obtained if the 3-methyl-5-pyrazolone is coupled with the nitrated diazo compound of 1-amino-2-naphtho (-4-sulfonic acid and the product obtained is coupled with fluorine and The new dye is a brown powder which dissolves in water with orange-red, in 10% sodium hydroxide solution with red, and in concentrated sulfuric acid with yellow.

   It dyes wool from an acid bath in red shades of excellent lightfastness. <I> Example: </I> In a mixture of 10 parts of 3-methyl-5-pyrazolone, 4 parts of sodium hydroxide, 30 parts of soda and 100 parts of water, 53.7 parts of the nitrated diazo compound of 1- Amino-2-naphthol-4-sulfonic acid. The mixture is stirred until the diazo compound has disappeared, salted out and filtered.



  41.5 parts of the dye thus obtained are then dissolved in 1100 parts of boiling water, 22.8 parts of chromium oxide in the form of an aqueous fluorochrome solution are added and the mixture is refluxed for a long time with the addition of glass powder.



  The new chromium compound is deposited in a finely crystalline, water-insoluble form. The same is filtered off, washed with water, then dissolved in 500 parts of a lukewarm 1.2% sodium hydroxide solution.

   The dye, which is now soluble, is obtained from this solution by weakly acidifying with acetic acid and salting out. When dried, this is a brown powder, dissolves in water with orange-red, in 10% sodium hydroxide solution with red, in concentrated sulfuric acid with a yellow color and dyes wool, preferably from a sulfuric acid dyebath, in red shades with excellent fastness properties.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Azofarbstoffes, dadurch gekennzeichnet, dass man das 3-112ethy1-5-pyrazolon mit der nitrier ten Diazoverbindung aus 1-Amino-2-naphthol- 9-sulfosäure kuppelt und das erhaltene Pro- dukt mit Fluorchrom und hierauf mit ver dünnten Alkalien behandelt. PATENT CLAIM: Process for the preparation of a new azo dye, characterized in that the 3-112ethy1-5-pyrazolone is coupled with the nitrated diazo compound from 1-amino-2-naphthol-9-sulfonic acid and the product obtained is coupled with fluorochrome and on top treated with diluted alkalis. Der neue Farb- stoff stellt ein braunes Pulver dar, welches sich in Wasser mit orangeroter, in 10o/oiger Natronlauge mit roter und in konzentrierter Schwefelsäure mit gelber Farbe löst. Er färbt Wolle aus saurem Bade in roten Tönen von vorzüglicher Lichtechtheit. The new dye is a brown powder which dissolves in water with orange-red, in 10% sodium hydroxide solution with red and in concentrated sulfuric acid with yellow. It dyes wool from an acid bath in red shades of excellent lightfastness.
CH129482T 1926-12-24 1926-12-24 Process for the production of a new azo dye. CH129482A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH129482T CH129482A (en) 1926-12-24 1926-12-24 Process for the production of a new azo dye.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH129482T CH129482A (en) 1926-12-24 1926-12-24 Process for the production of a new azo dye.
CH127260T 1926-12-24

Publications (1)

Publication Number Publication Date
CH129482A true CH129482A (en) 1928-12-17

Family

ID=25710825

Family Applications (1)

Application Number Title Priority Date Filing Date
CH129482T CH129482A (en) 1926-12-24 1926-12-24 Process for the production of a new azo dye.

Country Status (1)

Country Link
CH (1) CH129482A (en)

Similar Documents

Publication Publication Date Title
CH238453A (en) Process for the preparation of a copper-compatible polyazo dye.
CH129482A (en) Process for the production of a new azo dye.
CH129481A (en) Process for the production of a new azo dye.
CH191165A (en) Process for the preparation of a new monoazo dye.
CH192851A (en) Process for the preparation of a chromable monoazo dye.
CH200063A (en) Process for the preparation of an azo dye.
CH199371A (en) Process for the preparation of an azo dye.
CH202743A (en) Process for the preparation of an azo dye.
CH157522A (en) Process for the production of a new azo dye.
CH302037A (en) Process for the preparation of a chromable disazo dye.
CH199368A (en) Process for the preparation of an azo dye.
CH140009A (en) Process for the preparation of a strongly basic azo dye.
CH157523A (en) Process for the production of a new azo dye.
CH294239A (en) Process for the preparation of a trisazo dye.
CH191164A (en) Process for the preparation of a new monoazo dye.
CH189140A (en) Process for the preparation of a new monoazo dye.
CH133109A (en) Process for the preparation of a metal-containing azo dye.
CH157521A (en) Process for the production of a new azo dye.
CH119124A (en) Process for the production of a new dye.
CH228845A (en) Process for the preparation of a tetrakisazo dye.
CH194663A (en) Process for the preparation of an azo dye.
CH202741A (en) Process for the preparation of an azo dye.
CH117270A (en) Process for the production of a new dye.
CH137950A (en) Process for the preparation of a new disazo dye.
CH202742A (en) Process for the preparation of an azo dye.