Montedison S.p.a.

Angelo Mangini

Ruggero Battisti

Nicola Mazzaferro

Antonio Tundo

Giorgio Bornengo

Fabrizio Merlo

Gioacchino Boffa

A new class of hydrosoluble monoazoic cationic dyes free of sulphonic or carboxylic groups and derived from 1-phenyl-3-aminopyrazoles is disclosed, as are, also, processes for preparing the new dyes and use thereof in the dyeing and printing of synthetic fibers.

Monoazoic hydrosoluble cationic dyes

New yellow mono-azo dyes which are insoluble in water are disclosed. The dyes are derived from 1-phenyl-3-aminopyrazoles and are particularly effective in dyeing synthetic hydrophobic fibers to intense yellow shades.

Water-insoluble mono-azo yellow dyes derived from

Growing community of inventors

Bologna, Italy

Angelo Mangini