Process for pulverization of polyurethane-containing materials
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United States of America Patent
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Issued Date -
Jun 17, 2004
app pub date -
Aug 27, 2003
filing date -
Sep 3, 2002
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention comprises a method of comminuting/pulverizing polyurethane-containing materials to produce fine particles. The method of comminuting/pulverizing polyurethane-containing materials comprises first chopping the polyurethane-containing materials, thereby producing a polyurethane-containing flock. The polyurethane-containing flock is then processed to form a powder through a comminuting/pulverizing process wherein the comminuting/pulverizing process has at least two steps. Finally, a solid additive is added at any time during the comminuting/pulverizing process to prevent adherence of the polyurethane-containing materials powder during one of the at least two steps.
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