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1. (WO2018122749) FLEXIBLE NANOPARTICLE OPTICAL COATING COMPOSITIONS

Pub. No.:    WO/2018/122749    International Application No.:    PCT/IB2017/058442
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Thu Dec 28 00:59:59 CET 2017
IPC: C09D 4/00
C08K 3/00
H01L 51/00
Applicants: 3M INNOVATIVE PROPERTIES COMPANY
Inventors: HARTMANN-THOMPSON, Claire
ANIM-ADDO, Jonathan A.
MEYER, Justin P.
CARPENTER, Samuel J.
HUNT, Bryan V.
Title: FLEXIBLE NANOPARTICLE OPTICAL COATING COMPOSITIONS
Abstract:
Curable, coatable compositions include silane surface-treated inorganic nanoparticles with a high refractive index, and a curable reaction mixture. The curable reaction mixture inlcudes a first (meth)acrylate monomer comprising a high refractive index (meth)acrylate monomer with a refractive index of 1.6 or higher, a second (meth)acrylate monomer comprising a lower refractive index (meth)acrylate monomer with a refractive index of less than 1.6, and at least one initiator. Cured optical coatings prepared from the compositions are optically clear, having a visible light transmission of at least 88% and a haze of 5% or less, and have a refractive index of at least 1.78, and are capable of passing a 10 millimeter mandrel flexibility test.