Cyclic Olefin Copolymer (COC)


Cyclic olefin copolymer (COC) is a class of engineering polymers. Although only composed of olefins, COC is in contrast to the partially crystalline polyolefins such as polyethylene and polypropylene amorphous and therefore transparent.

The properties of COC can be varied over a wide range by changing the incorporation ratios of cyclic and linear olefins. For optical applications, the low birefringence of COC is interesting. In the field of medicine, the outstanding biocompatibility, in particular blood compatibility and the extremely low water absorption are to be emphasized.

Properties of COC

  • Good flowability
  • High rigidity
  • High strength
  • High hardness
  • Low density
  • High transparency
  • Good acid and alkali resistance
  • High biocompatibility

Applications of COC

Optical functional films in flat screens as well as lenses and sensors. Blister packaging and shrink and twist foil

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