Optically isotrophic polycarbonate films and a method for...

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Reexamination Certificate

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C428S213000, C425S166000, C425S133500, C353S035000

Reexamination Certificate

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07005180

ABSTRACT:
Injection-molding materials comprised of polycarbonate can be processed into optically isotropic films in a chill roll extrusion method. The optically isotropic films for protecting data carriers (CD-ROMS) from becoming scratched, or they are used as supporting materials for the information layer.

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