MICROPOROUS MATERIALS SUITABLE AS SUBSTRATES FOR PRINTED ELECTRONICS
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United States of America Patent
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Issued Date -
Jun 18, 2009
app pub date -
Dec 12, 2008
filing date -
Dec 14, 2007
priority date (Note) -
Abandoned
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Abstract
Provided is a microporous material including (a) a polyolefin matrix which is 30 to 80 weight percent high density polyolefin, (b) finely divided particulate filler distributed throughout the matrix including 10 to 30 weight percent or less of calcium carbonate, and (c) at least 35 percent by volume of a network of interconnecting pores communicating throughout the microporous material. The microporous material has a density ranging from 0.5 to 0.8 g/cc, a Sheffield smoothness of less than or equal to 40, a air flow rate of 1000 or more Gurley seconds, and MD stress at 1% strain of greater than or equal to 200 psi. Printed electronic devices prepared from the microporous material also are provided.
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