A method for the production of a phthalocyanine pigment preparation
includes finely distributing a crude phthalocyanine pigment by dry
milling, wet milling, salt kneading, acid pasting or acid swelling to
give a pre-pigment, the pre-pigment is subjected to a finishing treatment
in a mixture of water and an organic solvent at alkaline pH, increased
temperature and in the presence of at least one pigment dispersant from
the group of phthalocyanine sulphonic acids, phthalocyanine carboxylic
acids, phthalocyanine sulphonate salts, phthalocyanine carboxylate salts
and phthalocyanine suiphonamides.