DE409201C - Process for the production of acidic coloring agents - Google Patents

Process for the production of acidic coloring agents

Info

Publication number
DE409201C
DE409201C DEG59886D DEG0059886D DE409201C DE 409201 C DE409201 C DE 409201C DE G59886 D DEG59886 D DE G59886D DE G0059886 D DEG0059886 D DE G0059886D DE 409201 C DE409201 C DE 409201C
Authority
DE
Germany
Prior art keywords
production
coloring agents
acidic
parts
acidic coloring
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DEG59886D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chemische Ind Ges
GESELLSCHAFT fur CHEMISCHE INDUSTRIE
BASF Schweiz AG
Original Assignee
Chemische Ind Ges
GESELLSCHAFT fur CHEMISCHE INDUSTRIE
Gesellschaft fuer Chemische Industrie in Basel CIBA
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 Chemische Ind Ges, GESELLSCHAFT fur CHEMISCHE INDUSTRIE, Gesellschaft fuer Chemische Industrie in Basel CIBA filed Critical Chemische Ind Ges
Priority to DEG59886D priority Critical patent/DE409201C/en
Application granted granted Critical
Publication of DE409201C publication Critical patent/DE409201C/en
Expired legal-status Critical Current

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)

Description

Verfahren zur Herstellung von sauer färbenden Farbstoffen. Es wurde gefunden, daß man zu neuen Wollfarbstoffen gelangt, wenn man die Chromverbindungen, die erhalten werden durch Einwirkung von chromabgebenden Mitteln auf den Farbstoff aus der Diazoverbindung der i-Amino----oxvnaphthalin-4-sulfosäure und a-Naphthol, mit salpetriger Säure behandelt.Process for the preparation of acidic coloring agents. It was found that new wool dyes can be obtained by using the chromium compounds, which are obtained by the action of chromium donating agents on the dye from the diazo compound of i-amino ---- oxnaphthalene-4-sulfonic acid and a-naphthol, treated with nitrous acid.

Die neuen Farbstoffe bilden schwärzliche, bronzierende Pulver und färben Wolle aus schwefelsaurem Bade in echten, tiefschwarzen Farbtönen.The new dyes form blackish, bronzing powders and dye wool from sulfuric acid bath in real, deep black shades.

B#eispiel. Die Chromverbindung, die durch Kuppeln von 27,2 Teilen des Natronsalzes der Diazoverbindung der i-Amino-2-oxynaphthalin-4-sulfosäure mit 14,4 Teilen a-Naphthol und Behandeln des so erhaltenen Farbstoffes mit Alkalichromiten erhalten worden ist, wird in 7oo Teilen Wasser von 5o' C gelöst. Hierauf fügt man der klaren Lösung 6-,9 Teile Nitrit zu, kühlt und versetzt langsam mit 27o Teilen ioprozentiger Schwefelsäure, bis die Masse deutlich mineralsauer geworden ist. Es wird noch längere Zeit gerührt, zuerst unter Kühlung, dann bei gewöhnlicher Temperatur, hernach die überschüssige Miineralsäure mit Soda abgestumpft, der Farbstoff mit 2oo Teilen Kochsalz vollständig ausgefällt, filtriert und getrocknet.Example. The chromium compound, which is obtained by coupling 27.2 parts of the sodium salt of the diazo compound of i-amino-2-oxynaphthalene-4-sulfonic acid with 14.4 parts of a-naphthol and treating the dye thus obtained with alkali chromites, is in 7oo parts of water at 5o 'C dissolved. Then 6-9 parts of nitrite are added to the clear solution, the mixture is cooled and 270 parts of 10% sulfuric acid are slowly added until the mass has become clearly minerally acidic. The mixture is stirred for a longer time, first with cooling, then at ordinary temperature, then the excess mineral acid is truncated with soda, the dye is completely precipitated with 200 parts of common salt, filtered and dried.

Claims (1)

PATENT-ANSPRucii: Verfahren zur Herstellung von sauer färbenden Farbstoffen, dadurch gekennzeichnet, daß man auf die Chromverbindungen, welche erhalten -werden durch Behandeln des Farbstoffes aus der Diazoverbindung des i-Arnino-2-oxynaphthalin-4-sulfosäure und a-Naphthol mit chromabgebenden Mitteln, salpetrige Säure einwirken läßt.PATENT-ANSPRucii: Process for the production of acidic coloring agents, characterized in that on the chromium compounds which are obtained by treating the dye from the diazo compound of i-amino-2-oxynaphthalene-4-sulfonic acid and a-naphthol with chromium-releasing agents, nitrous acid.
DEG59886D 1923-09-14 1923-09-14 Process for the production of acidic coloring agents Expired DE409201C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEG59886D DE409201C (en) 1923-09-14 1923-09-14 Process for the production of acidic coloring agents

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG59886D DE409201C (en) 1923-09-14 1923-09-14 Process for the production of acidic coloring agents

Publications (1)

Publication Number Publication Date
DE409201C true DE409201C (en) 1925-01-31

Family

ID=7132295

Family Applications (1)

Application Number Title Priority Date Filing Date
DEG59886D Expired DE409201C (en) 1923-09-14 1923-09-14 Process for the production of acidic coloring agents

Country Status (1)

Country Link
DE (1) DE409201C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE921222C (en) * 1952-06-22 1954-12-13 Basf Ag Process for the production of metal-containing, water-soluble azo dyes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE921222C (en) * 1952-06-22 1954-12-13 Basf Ag Process for the production of metal-containing, water-soluble azo dyes

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