Description: TOPAS® is the trade name of a cyclic olefin copolymer (COC) developed by TOPAS ADVANCED POLYMERS GmbH, it is an amorphous transparent copolymer possessing a cyclic olefin structure.

The cover sheet is based on cyclic-olefin copolymers (COC), to which a powder of aluminum oxide (Al2O3) was added at different concentrations. COC are polymers with exceptional mechanical ...