A METHOD FOR PRODUCING A GRANULAR FORMULATION OF PLASTIC-SOLUBLE COLORANTS

摘要

The present invention relates to a method of producing a granular formulation of colorants soluble in plastics, which method comprises suspending in water a filter cake obtained from preparation of the colorant, adding thereto from 0.1 to 5.0 % by weight, calculated with respect to the weight of colorant, of a polyvinylpyrrolidone or of a sodium lauryl sulfate and, where appropriate, further adjuvants, and then drying the aqueous suspension to form granu-les, to the granular formulations obtainable according to that method, and to the use thereof in the production of colored plastics or colored polymeric particles.