| abstract |
A compound of Formula (1) in the free acid or salt form: n n n n n n n n n n n n wherein:n M is 2H, Si, a metal, an oxymetal group, a hydroxymetal group or a halometal group; Pc represents a phthalocyanine nucleus of formula; n n n n n n n n n n n n n n n n n n n each R 1 and R 2 independently is H, optionally substituted alkyl or optionally substituted aryl; n each R 3 independently is optionally substituted alkyl or optionally substituted aryl; n each n independently is 1 or 2; n x is 0 to 2; n y is 0.1 to 2.5; n x is 0.1 to 2.5; and n n n the sum (x+y+z) is 2.2 to 4. Also compositions, ink jet printer inks, cartridges and processes and printed materials. |