Orangenfarbige bis scharlachrote Monoazofarbstoffe und Verfahren zu deren Herstellung

摘要

1,167,435. Monoazo dyes. FARBWERKE HOECHST A.G. 18 Aug., 1967 [18 Aug., 1966], No. 38226/67. Heading C4P. The invention comprises dyes of the general formula wherein R is a 1-hydroxy-3,6-disulphonic acid naphthyl-(2) or 1 -hydroxy-4-sulphonic acid naphthyl-(2) radical. They are prepared by diazotization and coupling. The dyes dye linen, regenerated cellulose and cotton in orange to red shades from aqueous solution containing an acid binding agent.