| 摘要 |
PURPOSE:To improve the optical transmission characteristic from a visible light region to near IR region by using a polymer obtainable from the monomer alpha,beta,beta-heavy hydrogen-2,3,4,5,6-pentafluorostyrene expressed by the specific constitutional formula as a core component resin. CONSTITUTION:The core component resin to be used is the polymer obtainable from the monomer of the alpha,beta,beta-heavy hydrogen-2,3,4,5,6-pentafluorostyrene expressed by the formula. The core component resin may be the copolymer with the vinyl monomer which can be copolymerized with the monomer expressed by the formula and the compounding ratio thereof is preferably about <=50wt%, more preferably <=25wt% and most preferably <=10wt%. The vinyl monomer of which the C-H bond is made of heavy hydrogen or is fluorinated is most preferably used in terms of the optical transmission characteristic. The core component resin is preferably polymerized by bulk polymn. |
