Production method of beta-type copper phthalocyanine pigment

摘要

A production method of beta-type copper phthalocyanine pigment comprising steps of: a) producing a reaction mixture containing crude copper phthalocyanine in an organic solvent; b) wet-grounding the reaction mixture by mechanical energy to form a suspension; c) removing the organic solvent from the obtained suspension does not contaminate the work environment and represents an improvement in terms of both productivity and economic savings compared with conventional methods. The beta-type copper phthalocyanine pigment produced by this method demonstrates excellent dispersability, such that it may be dispersed without further modification in a resin, varnish, plastic or other medium as required, to produce a paint, ink, or plastic tinting agent, for example.