Water-barrier laminate
US10538841B2 · kind B2 · utility
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3Claims
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Key dates
| Filing date | Jul 29, 2015 |
| Grant date | Jan 21, 2020 |
| Priority date | — |
| Expiry date | Jul 29, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2439/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A water-barrier laminate having a water-trapping layer (1) in which a hygroscopic agent is dispersed, wherein a hygroscopic agent has such a hygroscopic property that the ratio (Ax/Ay) of a hygroscopic amount Ax at a relative humidity of 80% and a hygroscopic amount Ay at a relative humidity of 30% is not less than 3, and the water-trapping layer is positioned between the two inorganic barrier layers (3a) and (3b). The water-barrier laminate exhibits barrier property against the water over extended periods of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.