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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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. |
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