	US 12,286,549 B2
	Solvent-free formulations and nanocomposites
Peter Christopher Guschl, Baltimore, MD (US); James Dolgin, Baltimore, MD (US); Joseph Thomas Morgenstern, Baltimore, MD (US); and Robert Swisher, Baltimore, MD (US)
Assigned to PT SPE SUBCO LLC, Baltimore, MD (US)
Appl. No. 17/294,238
Filed by PIXELLIGENT TECHNOLOGIES LLC, Baltimore, MD (US)
PCT Filed Nov. 20, 2019, PCT No. PCT/US2019/062476 § 371(c)(1), (2) Date May 14, 2021, PCT Pub. No. WO2020/106884, PCT Pub. Date May 28, 2020.
Claims priority of provisional application 62/892,610, filed on Aug. 28, 2019.
Claims priority of provisional application 62/769,696, filed on Nov. 20, 2018.
Prior Publication US 2022/0002574 A1, Jan. 6, 2022
Int. Cl. C09D 133/06 (2006.01); B41M 3/00 (2006.01); B41M 5/00 (2006.01); B41M 7/00 (2006.01); C09D 4/06 (2006.01); C09D 7/40 (2018.01); C09D 7/45 (2018.01); C09D 7/62 (2018.01); C09D 7/63 (2018.01); C09D 11/037 (2014.01); C09D 11/101 (2014.01); C09D 11/107 (2014.01); C09D 11/322 (2014.01); C09D 11/38 (2014.01); C09D 133/14 (2006.01)

CPC C09D 133/062 (2013.01) [B41M 3/003 (2013.01); B41M 5/0023 (2013.01); B41M 7/0081 (2013.01); C09D 4/06 (2013.01); C09D 7/45 (2018.01); C09D 7/62 (2018.01); C09D 7/63 (2018.01); C09D 7/67 (2018.01); C09D 11/037 (2013.01); C09D 11/101 (2013.01); C09D 11/107 (2013.01); C09D 11/322 (2013.01); C09D 11/38 (2013.01); C09D 133/14 (2013.01)]

23 Claims

1. A formulation comprising at least partially capped metal oxide nanocrystals dispersed in a matrix, wherein the metal oxide is at least one oxide selected from zirconium oxide, titanium oxide, hafnium oxide, zinc oxide, tantalum oxide, and niobium oxide, wherein:

a) the formulation comprises less than 5 wt % solvent;

b) the matrix comprises acrylate and/or methacrylate monomers;

c) the formulation does not comprise benzyl methacrylate or trimethylolpropane triacrylate;

d) the viscosity of the formulation is within the range of 5-100 cP, when measured at 25° C. with a Brookfield RVDV II+ cone and plate viscometer;

e) the formulation has a weight loading of the metal oxide nanocrystals ranging from 20 wt % to 80 wt % of the formulation; and

e) the formulation comprises a monofunctional acrylate and/or methacrylate monomer with high refractive index, wherein the monofunctional acrylate and/or methacrylate monomer comprises benzyl acrylate, ethylene glycol phenyl ether acrylate, ethylene glycol phenyl ether methacrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-hydroxy-3-phenoxypropyl methacrylate, 2-phenoxy benzyl acrylate, biphenyl methacrylate, 2-phenylphenol methacrylate, isobutyl acrylate, 2-phenylethyl acrylate, 2-(phenylthio) ethyl acrylate, or a combination thereof.