Name of resin (English)

Cyclo Olefin Copolymer

Name of resin (Japanese)

Cyclic (cyclo) olefin copolymer

Application example

Optical lens, optical pickup, etc.

Dryer Points to note on selection

There is almost no hygroscopicity (100 ppm), but due to oxygen dissolved in the inside of the pellet, oxidation yellowing, screw burn, etc. occur at the time of melting. Oxygen is desorbed by heating to the drying temperature, but again in the atmospheric environment, it re-adsorbs with the temperature decrease, so treatment in a nitrogen atmosphere or vacuumization is suitable. Depending on product quality, use nitrogen purge or nitrogen substitution drying etc. properly.

Formable moisture ppm

It is a low hygroscopic resin, and the purpose is to deoxidize by drying normally.