公开(公告)号：WO2022074495A1

公开(公告)日：2022-04-14

申请号：PCT/IB2021/058699

申请日：2021-09-23

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： JING, Naiyong ,  TIAN, Xue ,  MA, Jun ,  DUCHARME, Jordan C. ,  DAMTE, Gezahegn D. ,  CHEN, Xi

IPC: C09D5/00 ,  B05D7/00 ,  B43L1/00 ,  C09D4/00 ,  C09D7/61 ,  C09D7/40 ,  C09D183/00 ,  C09D183/04 ,  C08J7/056 ,  C08K3/36

Abstract: Articles are described comprising a substrate and a hardcoat layer disposed on the substrate. The hardcoat layer comprises the hydrolyzed and condensed reaction product of a composition comprising: i) first hydrophobic silane monomer(s) having the formula R1Si(OR)3 wherein R and R1 is methyl or ethyl; ii) optional second silane monomer(s) having the formula (R2)4-mSi(OR)m or Si(OR)4, wherein R, R1 and R2 are organic groups with the proviso that R1 is not methyl or ethyl and m ranges from 1 to 3. The hardcoat layer may further comprises 10 to 30 wt.% silica nanoparticles. A surface layer comprising a hydrophilic silane may be disposed on the hardcoat layer. Also described is a method of using an article having a rewritable surface, hardcoat coating compositions, and methods of making hardcoat compositions and articles.

公开(公告)号：EP4225851A1

公开(公告)日：2023-08-16

申请号：EP21790561.1

申请日：2021-09-23

Applicant: 3M Innovative Properties Company

Inventor： JING, Naiyong ,  TIAN, Xue ,  MA, Jun ,  DUCHARME, Jordan C. ,  DAMTE, Gezahegn D. ,  CHEN, Xi

IPC: C09D5/00 ,  B05D7/00 ,  B43L1/00 ,  C09D4/00 ,  C09D7/61 ,  C09D7/40 ,  C09D183/00 ,  C09D183/04 ,  C08J7/056 ,  C08K3/36