Patent EP0463995A1 successfully refreshed from Google Patents.
EP0463995A1
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EP
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Azo dyestuffs with 2-alkylamino-3-cyano-4,6-diaminopyridines as coupling components
Assignee: Novartis AG
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Filing: 1991-06-18
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Granted: —
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Expires: 2011-06-18
Abstract
Abstract Translated from German Die Farbstoffe der Formel (1) <IMAGE> worin R1 Wasserstoff, Halogen oder CF3 und R2 gegebenenfalls substituiertes Alkyl bedeuten, wobei R2 nicht Ethoxycarbonylethyl sein darf, wenn R1 Wasserstoff ist, eignen sich zum Färben von Polyestermaterial in roten Farbtönen mit sehr guter Lichtechtheit. The dyes of the formula (1) <IMAGE> in which R1 is hydrogen, halogen or CF3 and R2 is optionally substituted alkyl, where R2 must not be ethoxycarbonylethyl if R1 is hydrogen are suitable for dyeing polyester material in red shades with very good lightfastness.
Inventors
- 👤 Visvanathan Dr. Ramanathan
- 👤 Angelo Della Casa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 01:05
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/34; C09B29/36; C09B29/3604; C09B29/3617; C09B29/3621; C09B29/3639; C09B29/0003
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References Cited (Backward Citations)
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