| 摘要 |
A CONTINUOUS PROCESS FOR PREPARING PIGMENTED THERMOPLASTIC MOLDING COMPOSITIONS IN AN EXTRUDER, COMPRISES I) IN A FIRST ZONE A) METERING IN FROM 10 TO 99.999 % BY WEIGHT OF A THERMOPLASTIC POLYMER INTO AN EXTRUDER AND II) IN A SUBSEQUENT ZONE AT TEMPERATURES BELOW THE RESPECTIVE GLASS TRANSITION TEMPERATURE OF THE THERMOPLASTIC A) B) ADDING FROM 0.001 TO 60 % BY WEIGHT OF A COLORANT AND THEN HEATING THE THERMOPLASTIC/COLORANT MIXTURE IN THE SUBSEQUENT ZONES, HOMOGENIZING THE POLYMER MELT AND EXTRUDING THE RESULTANT MIXTURE.
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