DE1419811C - Process for the preparation of monoazo dyes and their use for dyeing - Google Patents

Process for the preparation of monoazo dyes and their use for dyeing

Info

Publication number
DE1419811C
DE1419811C DE1419811C DE 1419811 C DE1419811 C DE 1419811C DE 1419811 C DE1419811 C DE 1419811C
Authority
DE
Germany
Prior art keywords
dyeing
preparation
monoazo dyes
formula
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
Other languages
German (de)
Inventor
Winfried Dr. 5090 Leverkusen; Weis Konrad Dr. 5000 Köln Kruckenberg
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.)
Bayer AG
Original Assignee
Bayer AG
Publication date

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Description

5555

den Vorteil der besseren Sublimierechtheit der Färbungen auf Polyestermaterialien und der erfindungsgemäße Farbstoff der Formelthe advantage of the better fastness to sublimation of the dyeings on polyester materials and that according to the invention Dye of the formula

N = NN = N

N(CH2CH2COOCH3)2 N (CH 2 CH 2 COOCH 3 ) 2

6060

den Vorteil der besseren Lichtechtheit der Färbungen auf Polyestermaterialien.the advantage of the better lightfastness of the dyeings on polyester materials.

Gegenüber nächstvergleichbaren Farbstoffen der USA.-Patentschrift 2 373 700 zeichnen sich die erfin-Ar —N Compared to the closest comparable dyes of US Pat. No. 2,373,700, the inventions Ar —N

worin Ar einen gegebenenfalls substituierten Ary lenrest bedeutet und die Substituenten X eine niedere Alkylengruppe darstellen, welche eine Carboxylgruppe oder eine mit einem niederen aliphatischen Alkohol veresterte Carboxylgruppe trägt, kuppelt, und für den FaU, daß X eine Carboxylgruppe trägt, das Kupplungsprodukt mit einem niederen aliphatischen Alkohol verestert. 2. Verwendung der nach Anspruch 1 herstell' baren Farbstoffe zum Färben von Materialien aus aromatischen Polyertem. where Ar denotes an optionally substituted aryl group and the substituents X represent a lower alkylene group which carries a carboxyl group or a carboxyl group esterified with a lower aliphatic alcohol, couples, and if X bears a carboxyl group, the coupling product with a lower aliphatic Esterified alcohol. 2. Use of the dyes according to claim 1 herstell ' ble for dyeing materials made of aromatic polyertems.

Claims (1)

Patentansprüche:Patent claims: 1. Verfahren zum Herstellen sulfonsäure- und carbonsäuregruppenfreier Monoazofarbstoffe, dadurch gekennzeichnet, daß man ein diazotiertes Amin der Formel1. Process for the production of sulfonic acid and carboxylic acid group-free monoazo dyes, characterized in that a diazotized amine of the formula R — NH2 R - NH 2 worin R einen 2,4-Dicyanphenyl- oder einen 2-Cyan-4-nitrophenylrest bedeutet, mit einer Verbindung der Formelwherein R is a 2,4-dicyanophenyl or a 2-cyano-4-nitrophenyl radical, with a compound the formula

Family

ID=

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