| abstract |
Compounds of Formula (1) and salts thereof: n nwherein:n M is 2H, Si, a metal, an oxymetal group, a hydroxymetal group or a halometal group; Pc represents a phthalocyanine nucleus; R 1 and R 3 are H or optionally substituted C 1-4 alkyl; R 2 and R 4 are H or optionally substituted hydrocarbyl; x is 0.0 to 3.9; y is 0.1 to 4.0; z is 0 to 3.9. Compositions, inks, ink-jet printing processes and cartridges, printed materials and ink jet printing cartridges are also disclosed. |