Poly(vinyl alcohol)-containing and silica nanoparticle multilayer coatings and methods
US9926458B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2014 |
| Grant date | Mar 27, 2018 |
| Priority date | — |
| Expiry date | Aug 12, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C2217/734
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Articles having poly(vinyl alcohol)-containing (PVA-containing) and silica nanoparticle multilayer coatings are provided. More specifically, articles include a substrate and a multilayer coating attached to the substrate. The multilayer coating includes a first silica layer and a first PVA-containing layer. The first silica layer is a primer layer of the multilayer coating, and the silica layer comprises a plurality of acid-sintered interconnected silica nanoparticles arranged to form a continuous three-dimensional porous network. The PVA-containing and silica nanoparticle multilayer coatings can be used on a large variety of substrates and tend to be resistant to wet and dry abrasions, scratches, and impacts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.