Patent ID: 7632345

Claim:
Phthalocyanine dyes of general formula (II) wherein R 1 -R 8 independently represent a linear or branched alkyl group having up to 8 carbon atoms; R 9 -R 12 independently represent hydrogen, a linear or branched alkyl group having up to 8 carbon atoms or halogen; Me represents copper, zinc, nickel, manganese, cobalt, aluminum or vanadium; M represents hydrogen, a metal cation or an aromatic ammonium cation, which optionally may be substituted by one or more alkyl or substituted alkyl groups each having from 1 to 18 C atoms, or an aliphatic ammonium cation, which optionally may be substituted by one or more alkyl or substituted alkyl or hydroxyalkoxyalkyl groups, each having from 1 to 18 C atoms; and m, n , o, p independently are 1 or 2.