Polyester film for capacitor
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United States of America Patent
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Oct 6, 1992
Grant Date -
N/A
app pub date -
Oct 25, 1991
filing date -
Oct 29, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A biaxially oriented polyester film for use in a capacitor having improved break down strength, which polyester having an acid component at least 90% by mole of which is terephthalic acid and a glycol component at least 97% by mole of which is 1,4-cyclohexanedimenthanol, in which film, an extracted amount with chloroform is not more than 1.3% by weight per 24 hours.
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