Reactive extrusion method of making inverse phase blends of poly(ethylene oxide) and polyolefin
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United States of America Patent
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May 1, 2001
Grant Date -
N/A
app pub date -
Jun 11, 1999
filing date -
Dec 31, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Methods of making inverse phase compositions comprising a polyolefin, such as polyethylene, and poly(ethylene oxide) are described. The inverse phase compositions exhibit an inverse phase in which the volume minority constituent, the poly(ethylene oxide), forms a continuous phase and volume majority constituent, the polyolefin, forms a dispersed or discontinuous phase in the continuous poly(ethylene oxide) phase. The inverse phase compositions have beneficial water degradable properties and can be used in the manufacture of disposable personal hygiene articles. In at least one desirable embodiment, the polyolefin and the poly(ethylene oxide) are grafted with a polar, vinyl monomer in a reactive extrusion process.
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