Polyester composition
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United States of America Patent
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Jun 11, 1991
Grant Date -
N/A
app pub date -
Jul 13, 1989
filing date -
Jul 21, 1988
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Expired
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Abstract
Disclosed herein is a polyester composition which comprises a polyester with a terminal carboxyl group content of 40 to 80 equivalents/10.sup.6 and 0.0 to 5 wt %, based on the total amount of the polyester composition, aluminum oxide particles of 0.005 to 5 .mu.m in average particle diameter and which has a melt resistivity of 6 x 10.sup.6 to 5 x 10.sup.8 .OMEGA..cm. By using the polyester composition, it is possible to successively produce a film having excellent wear resistance and flatness over a long production run.
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