公开(公告)号：US10072108B2

公开(公告)日：2018-09-11

申请号：US15312983

申请日：2015-04-20

Applicant: Daicel Corporation

Inventor： Takayuki Yaegashi ,  Keiichi Osano ,  Yoshimichi Okano ,  Kouichi Umemoto ,  Takeshi Yagi

IPC: C08F210/00 ,  C08F232/00 ,  C08F232/04 ,  C08J5/18 ,  C08F210/04 ,  C08F210/14

CPC classification number: C08F210/00 ,  C08F210/04 ,  C08F210/14 ,  C08F232/00 ,  C08F2420/02 ,  C08F2420/04 ,  C08J5/18 ,  C08J2323/20 ,  C08F232/08 ,  C08F2500/02 ,  C08F2500/26 ,  C08F4/6592

Abstract: Provided is a film, sheet, plate, or other such formed article having excellent transparency made of a copolymer obtained from a cyclic olefin monomer and an α-olefin monomer. The present invention provides a formed article made from a copolymer having Tg of 170° C. or higher and an Al content of 50 ppm or less that is a copolymer including a structural unit of a cyclic olefin monomer (A) derived from norbornene and a structural unit of a monomer (B) derived from at least one C4-C12 α-olefin.