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DE480827C - Process for the production of chromium-containing azo dyes - Google Patents

Process for the production of chromium-containing azo dyes

Info

Publication number
DE480827C
DE480827C DEI30306D DEI0030306D DE480827C DE 480827 C DE480827 C DE 480827C DE I30306 D DEI30306 D DE I30306D DE I0030306 D DEI0030306 D DE I0030306D DE 480827 C DE480827 C DE 480827C
Authority
DE
Germany
Prior art keywords
chromium
azo dyes
production
containing azo
dyes
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
DEI30306D
Other languages
German (de)
Inventor
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 DEI30306D priority Critical patent/DE480827C/en
Application granted granted Critical
Publication of DE480827C publication Critical patent/DE480827C/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)

Description

Verfahren zur Herstellung von chromhaltigen Azofarbstoffen E s wurde gefunden, daß man zu sehr echten Farbstoffen gelangt, wenn man auf die o-Oxyazofarbstoffe aus diazotiertem 4-Chlor-2-aminophenol und Naphtholmonosulfosäuren Verbindungen des dreiwertigen Chroms einwirken läßt. Die Chromierung der Farbstoffe kann durch Kochen unter Rückfluß oder durch Erhitzen im Autoklaven unter Druck vorgenommen werden. Die so erhaltenen Farbstoffe färben Wolle in rot- bis blauvioletten Tönen wasch- und walkecht an und besitzen außer einer sehr guten Lichtechtheit auch ein ausgezeichnetes Egalisierungsvermögen.A process for preparing chromium-containing azo dyes, E s was found that leads to very real dyes when allowed to o-Oxyazofarbstoffe from diazotised 4-chloro-2-aminophenol and act Naphtholmonosulfosäuren compounds of trivalent chromium. The chromating of the dyes can be carried out by refluxing or by heating in an autoclave under pressure. The dyes obtained in this way dye wool in red to blue-violet shades.

Beispiel i 4oo Gewichtsteile des Azofarbstoffes aus diazotiertem 4-Chlor-2-aminophenol und 2-6-Naphtholsulfos.äure werden in wäßriger lösung mit 35o Gewichtsteilen einer 26% Cr20.# enthaltenden Chromoxydpaste und 17o Gewichtsteilen 85%iger Ameisensäure 3 bis 4 Stunden im Autoklaven auf 12 5' erhitzt; nach dem Abkühlen bis auf etwa 3o bis 40' wird in der üblichen Weise ausgesalzen. Der erhaltene Chromfarbstoff färbt Wolle in schönem rotvioletten Ton echt an. Der entsprechende Chromfarbstoff aus diazotiertem 4-Chlor-2-aminophenol und 2 - 4-Naphtholsulfosäure färbt Wolle erheblich blaustichiger, mit ähnlichen Echtheitseigenschaften an.EXAMPLE I 400 parts by weight of the azo dye from diazotized 4-chloro-2-aminophenol and 2-6-naphtholsulphonic acid are mixed in an aqueous solution with 35o parts by weight of a chromium oxide paste containing 26% Cr20. # And 17o parts by weight of 85% formic acid for 3 to 4 hours Autoclave heated to 12 5 '; after cooling down to about 3o to 40 ', salting out is carried out in the usual way. The chrome dye obtained stains wool in a beautiful red-violet shade. The corresponding chrome dyestuff obtained from diazotised 4-chloro-2-aminophenol, and 2-4-Naphtholsulfosäure dyes wool bluish significantly, with similar fastness properties on.

Beispiel 2 4oo Gewichtsteile des Azofarbstoffes aus diazotiertem 4-Chlor-2-aminophenol und i-5-.Naphtholsulfosäure werden mit der gleichen Gewichtsmenge von Chromoxydpaste und Ameisensäure, wie in Beispieli angegeben, bis zur ' beendeten Chromierung etwa 17 bis 20 Stunden unter Rückfluß, gekocht. Durch Aussalzen mit Kochsalz wird die Chromverbindung abgeschieden. Sie färbt %Volle echt mit violettem Ton an. Die entsprechende Chromverbindung des Azofarbstoffes aus diazotiertem 4-Chlor-2-aminophe'nol und I - 4-Naphtholsulfosäure liefert auf Wolle einen rotstichigeren Ton.Example 2 4oo parts by weight of the azo dyestuff obtained from diazotised 4-chloro-2-aminophenol and i-5-.Naphtholsulfosäure are marked with the same amount by weight of Chromoxydpaste and formic acid as in Example I, to 'ended chromizing about 17 to 20 hours under reflux, cooked. The chromium compound is separated out by salting out with common salt. It stains% Volle real with a purple shade. The corresponding chromium compound of the azo dye from diazotized 4-chloro-2-aminophe'nol and I - 4-naphthol sulfonic acid gives a more reddish tone on wool.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von chromhaltigen Azofarbstoffen, dadurch gekennzeichnet, daß man die Monoazofarbstoffe aus diazotiertem 4-Chlor-2-aminophenol und iNaphtholmonosulfosäuren mit Verbindungen des dreiwertigen Chroms behandelt. Claim: Process for the preparation of chromium-containing azo dyes, characterized in that the monoazo dyes from diazotized 4-chloro-2-aminophenol and inaphthol monosulfonic acids are treated with compounds of trivalent chromium.
DEI30306D 1927-02-13 1927-02-13 Process for the production of chromium-containing azo dyes Expired DE480827C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI30306D DE480827C (en) 1927-02-13 1927-02-13 Process for the production of chromium-containing azo dyes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI30306D DE480827C (en) 1927-02-13 1927-02-13 Process for the production of chromium-containing azo dyes

Publications (1)

Publication Number Publication Date
DE480827C true DE480827C (en) 1929-08-09

Family

ID=7187586

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI30306D Expired DE480827C (en) 1927-02-13 1927-02-13 Process for the production of chromium-containing azo dyes

Country Status (1)

Country Link
DE (1) DE480827C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE913458C (en) * 1951-02-06 1954-06-14 Ciba Geigy Process for the production of complex chromium compounds of monoazo dyes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE913458C (en) * 1951-02-06 1954-06-14 Ciba Geigy Process for the production of complex chromium compounds of monoazo dyes

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