Glazing unit comprising a hydrophilic layer having an improved scratch resistance
US10077209B2 · kind B2 · utility
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22Claims
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Key dates
| Filing date | Dec 1, 2014 |
| Grant date | Sep 18, 2018 |
| Priority date | — |
| Expiry date | Dec 1, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C2217/78
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A glazing unit includes a hydrophilic layer including a polyurethane network incorporating bis-urea functions. Furthermore, a process for manufacturing this glazing unit, includes depositing a solution containing at least one isocyanate, one polyol and one bis-urea including a polyol function, polyvinylpyrrolidone, a film-forming agent and a solvent on a glass substrate, drying the glazing unit containing the substrate and the deposited solution, and subjecting the glazing unit to a temperature of between 100 and 150° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.