Flexible cycloolefin copolymer film and method of preparing same
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United States of America Patent
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Dec 10, 1996
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app pub date -
Feb 14, 1994
filing date -
Feb 12, 1993
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Abstract
A flexible single- or multilayer non-oriented or mono- or biaxially oriented film in which at least one layer comprises a cycloolefin copolymer, wherein the cycloolefin copolymer has a mechanical loss factor (tan .delta.) of .gtoreq.0.015 at 50.degree. C. below the glass transition temperature.
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