Process for coloring thermoplastics

Details Process for coloring thermoplastics Process for coloring thermoplastics

C - Chemistry, Metallurgy

08

J

C08J 3/20 (2006.01) B29C 47/10 (2006.01) C08J 3/205 (2006.01) C08L 33/12 (2006.01) C08L 79/08 (2006.01)

Patent

CA 2134193

An improved process for coloring polymethacrylates or polyglutarimides in an extruder comprises admixing the molten thermoplastic, conveyed directly from the polymerization 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.

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