High-purity polymer granules and method for the production thereof
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United States of America Patent
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Apr 13, 2004
Grant Date -
N/A
app pub date -
Apr 30, 2002
filing date -
Nov 3, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for producing polymer pellets is disclosed. The process that is particular suitable for making polycarbonate pellets entails extruding a polymer melt, cooling the extrudate by contacting it with a cooling fluid and pelletizing the solidified polymer. The process is characterized in that the cooling fluid has a solids particle content of at most 10 ppm.
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