Microporous shaped article and process for preparation thereof
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United States of America Patent
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Aug 24, 1993
Grant Date -
N/A
app pub date -
Feb 5, 1990
filing date -
May 23, 1988
priority date (Note) -
Expired
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Abstract
Disclosed is a microporous shaped polyolefin article comprising a polyolefin and synthetic resin particles dispersed therein and having a softening temperature or a decomposition temperature higher than the shaping temperature of the polyolefin resin, said article having a network structure composed of open-cellular pores with a maximum pore diameter of not more than 5 micromoters, having a porosity of 20 to 90% and being molecularly oriented by stretching. A process for its production is also provided.
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