COC (Cyclic Olefin Copolymer)
Cyclic Olefin Copolymer — an amorphous, glass-clear thermoplastic made by copolymerization of norbornene with ethylene. Combines the transparency of glass (>92% light transmission) with excellent dimensional stability, low water absorption (<0.01%), and high biocompatibility. Outstanding barrier to moisture (10× better than PET) but poor oxygen barrier. Tg adjustable 70-180°C via comonomer ratio. Primary applications: medical/pharmaceutical (pre-filled syringes, vials, blister packs — replaces glass), optical films for LCD/OLED displays, diagnostic microfluidic devices, high-barrier food packaging, FDA-approved USP Class VI grades.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| ISO 1043 | INT | COC | — | REF | |
| 🇺🇸 | ASTM D6868 | USA | COC | — | 100% |
| ISO 1043 | INT | COP | — | 90% |
Mechanical properties — Pro
Typical
| Property | Value | Unit |
|---|---|---|
| Density | ||
| Tensile Strength | ||
| Elastic Modulus | ||
| Elongation | ||
| Water Absorption (24h) | ||
| light_transmission |
Grade-Dependent
| Property | Value | Unit |
|---|---|---|
| Glass Transition Temp (Tg) | ||
| hdt_1.8mpa |
Service Range
| Property | Value | Unit |
|---|---|---|
| Continuous Use Temp |
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