| 摘要 |
This invention provides air impermeable liquid-water resistant water vapor-permeable composites with enhanced water-vapor-permeable properties comprising: (a) a layer of a microporous polymer that is water-vapor permeable and which is liquid water-resistant in contact with (b) an air-impermeable, liquid water resistant, polymer layer that is permeable to water-vapor molecules, and (c) a third layer of a microporous, water vapor permeable, hydrophilic polymer present on the side of the air impermeable polymer layer opposite the microporous polymer (a). |
