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US 5,583,192 AGranted
Flexible cycloolefin copolymer film and method of preparing same
AssigneeHoechst Aktiengesellschaft
InventorsCynthia Bennett, Michael-Joachim Brekner, Otto Herrmann-Schoenherr, Frank Osan
Life of this patent
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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.
Claims20
An oriented film having at least one layer in which at least one of said layers 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.
Dependencies are inferred from the claim text.