公开(公告)号：US20240026053A1

公开(公告)日：2024-01-25

申请号：US18029786

申请日：2021-09-03

Applicant: Polyplastics Co., Ltd.

Inventor： Tomoyuki Tada ,  Naoyuki Wakitani ,  Atsushi Nakano

IPC: C08F232/08 ,  C08F210/02 ,  C08K5/12 ,  G02B1/04

CPC classification number: C08F232/08 ,  G02B1/04 ,  C08K5/12 ,  C08F210/02

Abstract: A transparent article is obtained by molding a cyclic olefin copolymer or a resin composition containing the cyclic olefin copolymer. The cyclic olefin copolymer is obtained by a process that at least includes a step of preparing a norbornene monomer and ethylene as monomers in a polymerization vessel and a step of polymerizing the monomers in the polymerization vessel in the presence of a metal-containing catalyst. The metal-containing catalyst satisfies predetermined conditions.