Diffusion membrane
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United States of America Patent
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N/A
Issued Date -
Jun 5, 2003
app pub date -
Dec 3, 2001
filing date -
Dec 3, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A diffusion membrane is a microporous sheet comprising a blend of an aliphatic polyolefin and a thermoplastic olefin (TPO) elastomer. The blend comprises less than 10 percent by weight of the elastomer. The preferred polyolefins are selected from a group consisting of polyethylene, polypropylene, copolymers thereof, and blends thereof. The preferred TPO elastomers are selected from the group consisting of ethylene-propylene rubbers (EPR), ethylene-propylene-diene terpolymer rubbers (EPDM), and combinations thereof.
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