公开(公告)号：US20210292501A1

公开(公告)日：2021-09-23

申请号：US17284552

申请日：2019-10-23

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Junkang J. Liu ,  Zhigang Yu ,  Ta-Hua Yu ,  Garry W. Lachmansingh ,  Dongfeng Zheng

IPC: C08J7/046 ,  C08J7/18 ,  C08K3/22 ,  C08K3/26 ,  C08K3/30 ,  C08K3/36 ,  C09D171/02 ,  C09D133/12

Abstract: The present invention provides a release hard coating, comprising a bottom hard coating component and a top release coating component, wherein the bottom hard coating component comprises a crosslinked polymer matrix and nano-silica particles; and the top release coating component comprises a release polymer capable of having a grafting reaction with the bottom hard coating component. The release hard coating can be applied onto a substrate such as PET to resist sticky illegal advertisements and protect the substrate from wear.