PHTHALOCYANINES AND THEIR USE IN INK-JET PRINTING

摘要

A compound of Formula (1 ) and salts thereof: MPc - (R1-NR2-R3)n Formula (1 ) wherein: M is Cu or Ni; Pc represents a | phthalocyanine nucleus of formula; R1 is optionally substituted C1-4alkylene; R2 is H or optionally substituted C1-4alkyl; R3 is optionally substituted alkyl, optionally substituted aryl, optionally substituted acyl or optionally substituted heterocyclyl; or R2 and R3 are joined together to form with the nitrogen a heterocyclic ring which may contain other heteroatoms; n is 1 to 8: and provided that at least one of R1, R2 and R3 carries at least one acidic water solubilising substituent selected from the group consisting Of -SO3H, -CO2H and -PO3H2. Also compositions, inks, printing processes, printed materials and ink-jet cartridges.