High refractive index nanocomposites

Patent metadata

Field	Value
Publication number	US-10723907-B2
Application number	US-201916449763-A
Country	US
Kind code	B2
Filing date	Jun 24, 2019
Priority date	Sep 16, 2016
Publication date	Jul 28, 2020
Grant date	Jul 28, 2020

Abstract

A composite coating having a high refractive index, high Abbe number, low haze and high transmittance, suitable for fabricating nanoscale optical surface features includes a resin with a crosslinked polymer matrix having polymers with repeat units derived from acrylic or methacrylic monomers or oligomers and inorganic nanoparticles disposed within the resin, wherein the composite coating has a refractive index equal to or greater than 1.7 and a glass transition temperature equal to or greater than 60° C.

First claim

What is claimed is:

1. A curable coating composition comprising:
a. at least one bifunctional or polyfunctional acrylic or methacrylic monomer or oligomer comprising bisfluorene diacrylate (9,9-bis[4-(2-acryloyloxyethyl)phenyl]fluorene);
b. at least one monofunctional acrylic monomer, wherein the at least one monofunctional acrylic or methacrylic monomer comprises biphenylmethyl acrylate;
c. inorganic nanoparticles;
d. a solvent in which the at least one bifunctional or polyfunctional acrylic or methacrylic monomer or oligomer is dissolved and the inorganic nanoparticles are dispersed; and
e. a photoinitiator capable of initiating polymerization of the at least one bifunctional or polyfunctional acrylic or methacrylic monomer or oligomer when exposed to activating radiation.

2. The curable coating composition of claim 1 , wherein the at least one bifunctional or polyfunctional acrylic or methacrylic monomer further comprises a triacrylate.

3. The curable coating composition of claim 2 , wherein the at least one bifunctional or polyfunctional acrylic or methacrylic monomer comprises tris(2-hydroxyethyl isocyanurate)triacrylate.

4. The curable coating composition of claim 1 , wherein the at least one bifunctional or polyfunctional acrylic or methacrylic monomer or oligomer further comprises a triacrylate.

5. The curable coating composition of claim 1 , wherein the at least one bifunctional or polyfunctional acrylic or methacrylic monomer or oligomer further comprises tris(2-hydroxyethyl isocyanurate) triacrylate.

6. The curable coating composition of claim 1 , wherein the at least one bifunctional or polyfunctional acrylic or methacrylic monomer or oligomer further comprises a difunctional aromatic urethane acrylate oligomer.

7. The curable coating composition of claim 1 , wherein the at least one monofunctional acrylic or methacrylic monomer further comprises n-vinyl caprolactam.

8. The curable coating composition of claim 1 , wherein the at least one monofunctional acrylic or methacrylic monomer further comprises acrylic acid.

9. The curable coating composition of claim 1 , wherein the inorganic nanoparticles are functionalized to chemically react with the at least one bifunctional or polyfunctional acrylic or methacrylic monomer or oligomer upon exposure to the activating radiation.

10. The curable coating composition of claim 1 , wherein the solvent is propylene glycol methyl ether acetate.

11. The curable coating composition of claim 10 , wherein the at least one bifunctional acrylic or methacrylic monomer or oligomer further comprises an aromatic urethane acrylate oligomer.

12. The curable coating composition of claim 1 , wherein the inorganic nanoparticles comprise zirconium oxide.

13. The curable coating composition of claim 12 , wherein the zirconium oxide nanoparticles have an average size of about 10 nm or less.

Assignees

• Corning Inc

Inventors

• Lyon Jennifer Lynn
• Maurey Pamela Arlene
• Senaratne Wageesha
• Weikel Arlin Lee
• Zhang Ying

Classifications

• G02B1/045 Primary

  Light guides · CPC title

• C09D7/67

  Particle size smaller than 100 nm · CPC title

• G02B6/1221

  made from organic materials · CPC title

• C09D4/00

  Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond {; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16} · CPC title

• G02B6/124

  Geodesic lenses or integrated gratings · CPC title