Synthetic polymers containing carbon black and barium sulfate, used for the production of fibres, filaments or moulded parts

摘要

Synthetic polymers (I) containing carbon black (II) and barium sulfate (III). Independent claims are also included for (a) a method for the production of (I) by adding a suspension of (II) and (III) to a polymer melt; (b) a method for the production of (I) in which (II) and (III) are added to a polymer melt in an extruder; (c) a method for the production of (I) in which (II) and (III) are added to the polymer starting materials before polymerisation.