Building assembly including a weather resistant barrier, a sheet for use as a weather resistant barrier, a liquid coating composition and methods of making the foregoing
US10167627B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2016 |
| Grant date | Jan 1, 2019 |
| Priority date | — |
| Expiry date | Jun 26, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04C2/528
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A weather resistive barrier (WRB) for the exterior protection of building substrates can have a water vapor permeability that decreases with increasing temperature. In an embodiment, the WRB includes a coating comprising a LCST polymer, and may further include a second polymer. The WRB can be part of a building assembly, part of a sheet, or a sheet itself, the sheet having an air permeability of less than 0.02 L/(s m2) at a pressure of 75 Pa. Furthermore a liquid coating composition can include a LCST polymer and a second polymer, wherein the liquid coating composition can be adapted that a solid coating formed by the liquid coating composition has an air permeability of less than 0.02 L/(s m2) at a pressure of 75 Pa and a water vapor permeability that decreases with increasing temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.