[1F08-12] Polymer, oligomer(3)

[1F08] Cycloolefin copolymers bearing pendant fluorenyl groups with improved refractive index and low birefringence values

○Haobo Yuan¹, Ryo Tanaka¹, Yuushou Nakayama¹, Takeshi Shiono¹ (1. Hiroshima University)

Copolymerizations of norbornene and alkenyl monomers bearing fluorenyl groups were conducted by using (^tBuNSiMe₂Flu)TiMe₂-[Ph₃C][B(C₆F₅)₄]/scavenger system. Copolymers with controllable fluorenyl group contents were obtained with high yields. The copolymers were made into transparent films by a solvent casting procedure, and the copolymers films were transparent with high refractive indexes and low birefringence values.

Keywords:cycloolefin copolymers, titanium catalyst, fluorenyl pendant groups