DE488536C - Process for the preparation of chromium-containing azo dyes - Google Patents

Process for the preparation of chromium-containing azo dyes

Info

Publication number
DE488536C
DE488536C DEI30978D DEI0030978D DE488536C DE 488536 C DE488536 C DE 488536C DE I30978 D DEI30978 D DE I30978D DE I0030978 D DEI0030978 D DE I0030978D DE 488536 C DE488536 C DE 488536C
Authority
DE
Germany
Prior art keywords
chromium
azo dyes
preparation
containing azo
parts
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
DEI30978D
Other languages
German (de)
Inventor
Dr Franz Philipp Bluemmel
Dr Hans Krzikalla
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DEI30978D priority Critical patent/DE488536C/en
Application granted granted Critical
Publication of DE488536C publication Critical patent/DE488536C/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)
  • Coloring (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Verfahren zur Darstellung von chromhaltigen Azofarbstoffen Es wurde gefunden, daB man sehr wertvolle, chromhaltige Farbstoffe erhält, wenn man die Azofarbstoffe aus diazotierten o-Aminophenolen und i # 3-Phenylendiamin-5-sulfonsäure mit chromabgebenden Mitteln behandelt, z. B. durch Kochen oder Erhitzen mit oder ohne Druck.Process for the preparation of chromium-containing azo dyes It was found that very valuable chromium-containing dyes are obtained by using the azo dyes from diazotized o-aminophenols and i # 3-phenylenediamine-5-sulfonic acid with chromium donating Treated means, e.g. B. by boiling or heating with or without pressure.

Beispiel i 42 Teile des Azofarbstoffes aus diazotierter Pikraminsäure und i # 3-Phenylendiamin-5-sulfonsäure werden mit einer Lösung, die 9,1 Teile Chromoxyd und 15 Teile 35prozentige Ameisensäure in 500 Teilen Wasser enthält, 3 Stunden auf =2o bis i25 ° erhitzt. Der Chromfarbstoff wird ausgesalzen und getrocknet. Er liefert auf Wolle ein schönes, echtes Braun, das gut egalisiert. Ähnliche Färbungen werden auf Leder erhalten. Beispiel 2 23,3Teile 4-Nitro-2-aminophenol-6-sulfonsäure werden diazotiert, worauf man die Diazoverbindung zu einer sodaalkalischen Lösung von 22 Teilen i . 3-phenylendiamin-5-sulfonsauremNatrium gibt. Nach mehrstündigem Rühren wird ausgesalzen und abgesaugt. Durch Behandeln mit chromabgebenden Mitteln, wie in Beispiel i beschrieben, erhält man einen Farbstoff, der Wolle mit schönem, echtem braunen Ton färbt.Example i 42 parts of the azo dye made from diazotized picric acid and i # 3-phenylenediamine-5-sulfonic acid are heated for 3 hours at = 20 to i25 ° with a solution containing 9.1 parts of chromium oxide and 15 parts of 35 percent formic acid in 500 parts of water . The chromium dye is salted out and dried. It delivers a beautiful, real brown on wool that levels out well. Similar colorations are obtained on leather. Example 2 23.3 parts of 4-nitro-2-aminophenol-6-sulfonic acid are diazotized, whereupon the diazo compound is converted into a soda-alkaline solution of 22 parts i. 3-phenylenediamine-5-sulfonic acid sodium. After several hours of stirring, it is salted out and filtered off with suction. Treatment with chromium-releasing agents, as described in Example i, gives a dye which dyes wool with a beautiful, genuine brown tone.

In ähnlicher Weise kann der Farbstoff mit 4-Nitro-2-aminophenol hergestellt werden.Similarly, the dye can be made with 4-nitro-2-aminophenol will.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von chromhaltigen Azofarbstoffen, dadurch gekennzeicbnet, daB man die Azofarbstoffe aus diazotierten o-Aminophenolen und i . 3-Phenylendiamin-5-sulfonsäure mit chromabgebenden Mitteln behandelt. PATENT CLAIM: Process for the preparation of chromium-containing azo dyes, characterized in that the azo dyes are obtained from diazotized o-aminophenols and i. 3-phenylenediamine-5-sulfonic acid treated with chromium donating agents.
DEI30978D 1927-04-22 1927-04-22 Process for the preparation of chromium-containing azo dyes Expired DE488536C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI30978D DE488536C (en) 1927-04-22 1927-04-22 Process for the preparation of chromium-containing azo dyes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI30978D DE488536C (en) 1927-04-22 1927-04-22 Process for the preparation of chromium-containing azo dyes

Publications (1)

Publication Number Publication Date
DE488536C true DE488536C (en) 1929-12-30

Family

ID=7187764

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI30978D Expired DE488536C (en) 1927-04-22 1927-04-22 Process for the preparation of chromium-containing azo dyes

Country Status (1)

Country Link
DE (1) DE488536C (en)

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