Thermoformable polyaryletherketone sheet
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United States of America Patent
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Feb 26, 1991
Grant Date -
N/A
app pub date -
Dec 13, 1988
filing date -
Dec 13, 1988
priority date (Note) -
Expired
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Abstract
A thermoformable polyaryletherketone sheet of a thickness of about 625-5000 micrometers, having repeating units derived from diphenyl ether and terephthalyl and isophthalyl groups, especially a polyetherketoneketone in which the terephthalyl to isophthalyl isomer ratio is about 70:30 to 0:100, especially 60:40 to 50:50, which thermoformable sheet has a crystallinity of 5% of less, can be fabricated into three-dimensional articles such as, e.g., panels and ducts for aircraft interiors having good formability and mold replication.
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