Extruded poly (ethylene oxide) and filler composites and films having enhanced ductility and breathability
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United States of America Patent
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Aug 10, 2004
Grant Date -
N/A
app pub date -
Oct 20, 1999
filing date -
Dec 29, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Breathable, flushable, porous films and articles made therewith and a process for making these films. The present invention is directed to composites comprising a polymer that is water-soluble or water-degradable and a filler. The films are made by extruding the composite materials into a precursor film and, preferably, stretching the precursor film to achieve the desired breathability and water-dispersibility of the finished film. In one embodiment, the composition of the invention comprises a polymer of ethylene oxide and a filler such as calcium carbonate.
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