Anti-soiling compositions comprising silica nanoparticles and functional silane compounds and coated articles thereof
US10738201B2 · kind B2 · utility
1Cited by
2References
13Claims
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Key dates
| Filing date | Jul 29, 2015 |
| Grant date | Aug 11, 2020 |
| Priority date | — |
| Expiry date | Mar 19, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C2217/75
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Provided is a coated article comprising a substrate and a dried coating which comprises a first set of spherical silica nanoparticles having an average diameter of less than 20 nm and a second set of spherical silica nanoparticles having an average diameter of 20 nm to 120 nm. The alkoxy silane compound comprises an epoxy functional group or a carboxylic acid functional group. Also provided is a coating composition comprising an acidic aqueous dispersion which comprises the described first and second set of spherical silica nanoparticles and silane compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.