Pigment preparations and their application to the coloration in the mass of thermoplastic materials

摘要

P the invention relates to the pigment preparations. The preparations of the invention contain a pigment, a surfactant not ionogen and, as a thermoplastic of shaping, a copolymer of average molecular weight of between 80 000 and 160 000, containing 90 to 50% by weight of alpha - para-methylstirene and 10 to 50% by weight of acrylonitrile. / p & & p & application to the coloration in the mass of thermoplastic materials to be moulded. / p