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CH239161A - Process for the preparation of a green chromating dye. - Google Patents

Process for the preparation of a green chromating dye.

Info

Publication number
CH239161A
CH239161A CH239161DA CH239161A CH 239161 A CH239161 A CH 239161A CH 239161D A CH239161D A CH 239161DA CH 239161 A CH239161 A CH 239161A
Authority
CH
Switzerland
Prior art keywords
dye
green
preparation
red
parts
Prior art date
Application number
Other languages
German (de)
Inventor
Ag J R Geigy
Original Assignee
Ag J R Geigy
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 Ag J R Geigy filed Critical Ag J R Geigy
Publication of CH239161A publication Critical patent/CH239161A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B45/00Complex metal compounds of azo dyes
    • C09B45/02Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
    • C09B45/14Monoazo compounds
    • C09B45/16Monoazo compounds containing chromium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)

Description

  

  Verfahren zur Darstellung eines grünen     Ühromierungsfarbstoffes.            .Es    wurde gefunden, dass man einen neuen,  wertvollen,     chromierbaren    Farbstoff erhält,  wenn man     diazotierte        5-Chlor-2-aminophenol-          4-phenyiketon-3'-sulfonsäure    mit     2-Amino-          naphthalin-3-carbonsäure    kuppelt. Der Farb  stoff färbt Wolle aus saurem Bade in roten,       nachchromiert    gelbgrünen Tönen. Die egalen       Färbungen    besitzen sehr gute Walk-,     Alkali-          und    Lichtechtheit.

           2-aminonaphthalin-3-carbonsaurem    Natrium  in 300 Teilen Wasser fliessen. Man rührt so  lange bei Zimmertemperatur, bis die     Farb-          stoffbildung    beendet ist und fällt dann den  Farbstoff durch Sättigen mit Kochsalz aus.       Abgepresst    und getrocknet stellt er ein       orangebraunes    Pulver dar, das sich in Wasser  mit roter, in konzentrierter Schwefelsäure  mit     violettroter    Farbe löst.

      <I>Beispiel:</I>  32,7 Teile 5 - Chlor - 2 -     aminophenol    - 4     -          phenylketon-3'-sulfonsäure    werden in 150  Teilen Wasser mit 5,4 Teilen wasserfreier       Soda.    neutral gelöst, mit 6,9 Teilen Natrium  nitrit versetzt     und    die klare Lösung in 13  Teile konzentrierte Salzsäure, die     vorgängig     mit 30 Teilen Wasser verdünnt     wurden,    ge  gossen.

   Nach Beendigung der     Diazotierung     neutralisiert man die überschüssige Säure  mit     Natriumbikarbonat    und lässt dann die  klare gelbe Lösung der     Diazoverbindung     unter Rühren in eine Lösung von 21,4 Teilen



  Process for the preparation of a green chromating dye. It has been found that a new, valuable, chromable dye is obtained if diazotized 5-chloro-2-aminophenol-4-phenyiketone-3'-sulfonic acid is coupled with 2-amino-naphthalene-3-carboxylic acid. The dye dyes wool from an acid bath in red, chrome-plated yellow-green tones. The level dyeings have very good mill, alkali and lightfastness.

           Sodium 2-aminonaphthalene-3-carboxylic acid flow in 300 parts of water. The mixture is stirred at room temperature until the formation of the dye has ended and the dye is then precipitated by saturation with sodium chloride. Pressed and dried, it is an orange-brown powder that dissolves in water with red, in concentrated sulfuric acid with purple-red color.

      <I> Example: </I> 32.7 parts of 5 - chloro - 2 - aminophenol - 4 - phenylketone-3'-sulfonic acid are mixed with 5.4 parts of anhydrous soda in 150 parts of water. dissolved neutrally, 6.9 parts of sodium nitrite were added and the clear solution was poured into 13 parts of concentrated hydrochloric acid which had previously been diluted with 30 parts of water.

   After the end of the diazotization, the excess acid is neutralized with sodium bicarbonate and the clear yellow solution of the diazo compound is then left in a solution of 21.4 parts with stirring

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines grünen Chromierungsfarbstoffes, dadurch gekenn zeichnet, dass man diazotierte 5-Chlor-2- aminophenol - 4 - phenylketon - 3'- sulf onsäure mit 2 - A.minonaphthalin - 3 - carbonsäure kuppelt. PATENT CLAIM: Process for the production of a green chromating dye, characterized in that diazotized 5-chloro-2-aminophenol - 4 - phenyl ketone - 3'-sulfonic acid is coupled with 2 - a. Der so erhaltene Farbstoff ist ein orange braunes Pulver, das sich in Wasser mit roter, in konzentrierter Schwefelsäure mit violetter Farbe löst und Wolle aus saurem Bade in roten, nachchromiert gelbgrünen Tönen färbt. The dye obtained in this way is an orange-brown powder which dissolves in water with red, in concentrated sulfuric acid with a violet color and dyes wool from an acid bath in red, after-chrome-plated yellow-green shades.
CH239161D 1942-12-23 1942-12-23 Process for the preparation of a green chromating dye. CH239161A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH239161T 1942-12-23
CH235770T 1942-12-23

Publications (1)

Publication Number Publication Date
CH239161A true CH239161A (en) 1945-09-15

Family

ID=25728048

Family Applications (1)

Application Number Title Priority Date Filing Date
CH239161D CH239161A (en) 1942-12-23 1942-12-23 Process for the preparation of a green chromating dye.

Country Status (1)

Country Link
CH (1) CH239161A (en)

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