Articles that include a polymer foam and method for preparing same
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United States of America Patent
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-
Feb 1, 2011
Grant Date -
Oct 7, 2004
app pub date -
Apr 30, 2004
filing date -
Jul 31, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Polymer foam articles prepared by melt-mixing a polymer composition and a plurality of microspheres, at least one of which is an expandable polymeric microsphere, under process conditions, including temperature and shear rate, selected to form an expandable extrudable composition; and extruding the composition through a die.
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