公开(公告)号：US20180072878A1

公开(公告)日：2018-03-15

申请号：US15565328

申请日：2016-04-08

Applicant: Apple Inc.

Inventor： Yannan Duan ,  Roger W. Avakian

IPC: C08L23/08

CPC classification number: C08L23/0823 ,  C08F210/00 ,  C08F232/08 ,  C08L23/00 ,  C08L45/00 ,  C08L53/00 ,  C08L2201/08 ,  C08L2205/025 ,  C08L2205/03 ,  C08L2205/05 ,  C08F210/02

Abstract: Cyclic olefin copolymer (COC) has its impact toughness and its resistance to UV absorbers and fatty acid derivatives enhanced to commercially acceptable levels by the addition of an impact modifying polymer selected from the group consisting of styrenic block copolymers and olefinic block copolymers and combinations thereof; and a linear or branched polyolefin, respectively.