Continuous Bulk Polymerization In A Planetary Roller Extruder
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United States of America Patent
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Issued Date -
Jul 26, 2007
app pub date -
Jan 8, 2007
filing date -
Jan 24, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A process including the steps of: providing a planetary roller extruder having a plurality of compounding sections including a main spindle surrounded by and intermeshed with a plurality of planetary spindles; introducing monomers and initiator into a first compounding section; producing a homogeneous composition; heating the composition to initiate free-radical polymerization; introducing monomers and initiator into one or more of the remaining compounding sections and continuing the polymerization; discharging the polymerized composition; and optionally, taking a portion of the composition discharged from the planetary roller extruder and returning it to the first compounding section.
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