Patent ID: 7182806

Claim:
A composition comprising: (a) a major dye component which is a mixture of phthalocyanine dyes of Formula (1) and salts thereof: wherein: M is Cu or Ni; Pc represents a phthalocyanine nucleus of formula; R 1 and R 2 independently are H or methyl; R 3 is H or optionally substituted hydrocarbyl; and R 4 is optionally substituted hydrocarbyl; or R 3 and R 4 together with the nitrogen atom to which they are attached represent an optionally substituted aliphatic or aromatic ring system; x is 0.1 to 3.8; y is 0.1 to 3.8; z is 0.1 to 3.8; the sum of (x+y+z) is 4; and the substituents, represented by x, y and z, are attached only to a β-position on the phthalocyanine ring; and (b) a liquid medium which comprises water and an organic solvent or an organic solvent free from water.