Articles including nanosilica-based primers for polymer coatings and methods

Patent metadata

Field	Value
Publication number	US-10066109-B2
Application number	US-201113642341-A
Country	US
Kind code	B2
Filing date	Apr 20, 2011
Priority date	Apr 28, 2010
Publication date	Sep 4, 2018
Grant date	Sep 4, 2018

Abstract

The present disclosure provides articles that include polymer coatings on substrates primed with a primer coating containing silica nanoparticles, and methods of coating. The polymer coating is preferably a silicone-based polymeric material.

First claim

What is claimed is:

1. A coated article comprising a substrate surface, a nanoparticle-containing primer disposed on the substrate surface, and a silicone-based material bonded to the nanoparticle-containing primer, wherein the substrate is glass, wherein the silicone-based material is part of a Fresnel lens, and wherein the nanoparticle-containing primer comprises an acid having a pKa of <3.5 and agglomerates of silica nanoparticles, said primer providing a continuous three-dimensional porous network of acid-sintered silica nanoparticles, and the silica nanoparticles being bonded to adjacent silica nanoparticles.

2. The coated article of claim 1 , wherein the silica nanoparticles have an average primary particle diameter of less than 40 nanometers.

3. The coated article of claim 1 , wherein the nanoparticle-containing primer is 100 Å to 10,000 Å thick.

4. The coated article of claim 1 , wherein the silicone-based material is substantially free of catalysts and initiators.

5. The coated article of claim 1 , wherein the silicone-based material is non-tackified.

6. The coated article of claim 1 , wherein the silicone-based material is a surface-structured silicone-based material.

7. A coated article comprising a substrate surface, a nanoparticle-containing primer disposed on the substrate surface, a silicone tie layer disposed on the nanoparticle-containing primer, and a silicone-based material bonded to the silicone tie layer, wherein the substrate is glass, wherein the silicone-based material is part of a Fresnel lens, wherein the tie layer is at least one of UV or thermally cured, and wherein the nanoparticle-containing primer comprises an acid having a pK a of <3.5 and agglomerates of silica nanoparticles, said primer providing a continuous three-dimensional porous network of acid-sintered silica nanoparticles, and the silica nanoparticles being bonded to adjacent silica nanoparticles.

8. The coated article of claim 7 , wherein the silica nanoparticles have an average primary particle diameter of less than 40 nanometers and wherein the nanoparticle-containing primer is 100 Å to 10,000 Å thick.

9. The coated article of claim 7 , wherein the silicone-based material is substantially free of catalysts and initiators.

Assignees

• Pett Todd G
• Hebrink Timothy J
• Jing Naiyong
• Riddle Justin A
• Thompson David Scott
• Hartzell Andrew K
• 3M Innovative Properties Co

Inventors

• Pett Todd G
• Hebrink Timothy J
• Jing Naiyong
• Riddle Justin A
• Thompson David Scott
• Hartzell Andrew K

Classifications

• C08L83/06

  containing silicon bound to oxygen-containing groups (C08L83/12 takes precedence) · CPC title

• C09D183/04

  Polysiloxanes · CPC title

• C08L83/04

  Polysiloxanes · CPC title

• G02B3/08

  with discontinuous faces, e.g. Fresnel lens {(diffractive Fresnel lenses G02B5/1876)} · CPC title

• C09J183/04

  Polysiloxanes · CPC title