METHOD FOR PRODUCING DYED MOULDING MATERIALS

A continuous process for preparing pigmented thermoplastic molding compositions in an extruder, comprisesI) in a first zoneA) metering in from 10 to 99.999% by weight of a thermoplastic polymer into an extruder andII) in a subsequent zone at temperatures below the respective glass transition tempera...

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Bibliographische Detailangaben
Hauptverfasser: MOSNER, HERBERT, GUTSCHE, HERBERT, ANDERLIK, RAINER, BRANDT, HERMANN, GRESS, DIETER, BAIERWECK, PETRA, BRIAN, BERND, HEEL, HELMUT, KRESS, NORBERT
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:A continuous process for preparing pigmented thermoplastic molding compositions in an extruder, comprisesI) in a first zoneA) metering in from 10 to 99.999% by weight of a thermoplastic polymer into an extruder andII) 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 andthen heating the thermoplastic/colorant mixture in the subsequent zones, homogenizing the polymer melt and extruding the resultant mixture.