NOVEL CATIONIC DI-METHYLENEDIOXY-BENZENES, THEIR USE FOR OXIDATION DYEING OF KERATIN FIBRES

摘要

The invention concerns novel di-methylenedioxy-benzenes comprising at least a cationic group Z, Z being selected among quaternized aliphatic chains comprising at least a saturated quaternized cycle, and aliphatic chains comprising at least an unsaturated quaternized cycle, their use as oxidation dye precursor for oxidation dyeing of keratin fibres, dyeing compositions containing them, and dyeing methods using them.