Phenyl fluorene dyestuffs - for acid-modified textiles esp polyesters and acrylonitrile polymers giving fast blue shades

摘要

Dyes of formula (I): (where X- is an anion R1 and R2 are H or 1-4C alkyl, esp. Me or Et, and benzene rings are opt. substd by further Cl or Me) are used for dyeing acrylonitrile polymers and acid modified polyesters in navy-blue to greenish blue fast shades, resistant to light and hot steaming.