Crosslinked poly(vinyl alcohol) and silica nanoparticle multilayer coatings and methods
US9925560B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2014 |
| Grant date | Mar 27, 2018 |
| Priority date | — |
| Expiry date | Aug 29, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C2217/478
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Articles having crosslinked poly(vinyl alcohol) (PVA) and silica nanoparticle multilayer coatings are provided. More specifically, articles including a substrate, and a multilayer coating attached to the substrate are provided. The multilayer coating includes a first crosslinked poly(vinyl alcohol) (PVA) layer and a first silica layer. The first crosslinked PVA layer is an outermost layer of the multilayer coating. The first silica layer comprises a plurality of acid-sintered interconnected silica nanoparticles arranged to form a continuous three-dimensional porous network. The PVA 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.