Process for the manufacture of organic pigments with prominent technical application properties

摘要

A process for the preparation of organic pigments having outstanding performance properties, characterized in that finely divided crude pigments of the anthanthrone, pyranthrone, isoviolanthrone, azo, China cridon-, flavanthrone, indanthrone, Naphthaldazin-, indigo, Thioindig-, Tetracarboximid -, dioxazine, isoindolinone, perylene, anthrapyrimidine, Acylanthrachinon-, Dianthra chinonyl-, Azoanthrachinon-, Azomethinanthrachinon- and phthalocyanine series acidic acid with esters from polyphosphoric and a primary, secondary or tertiary alkanol from 1 to 8 carbon atoms, a glycol Glykolethor or phenol at temperatures from 0 ° C to 100 ° C, treated, and then phosphoric acid ester hydrolyzed poly applied, the resulting aqueous mixture to temperatures of from 20 ° C to 150 ° C., and the pigment is isolated in überlicher manner.