COC are a new class of polyolefins with a molecular structure in between of Polyethylene and Polypropylene but with completely unique performance.

In the polymer linear sections change with aromatic sections. The characteristics can be varied by variation of the distribution of both fractions. 

Characteristic for all version of COC is the amorphous structure and the complete transperency. Therefore typical applications for COC are transparent covers and screens.

Commercial COC brands are: Topas (Ticona), Zeonex, Apel