PROCESS FOR COLORING THERMOPLASTICS

摘要

An improved process for coloring polymethacrylates or polyglutarimides in an extruder comprises admixing the molten thermoplastic, conveyed directly from thepolymerization operation, in an extruder mixing zone with a dispersion of at least one pigment, dye, or colorant in a suitable clear carrier, then conveying the admixed colored thermoplastic into an extrusion zone or injection molding zone.