FLEXIBLE WATER RESISTANT COMPOSITES PERMEABLE TO WATER VAPOURS AND PROCESS FOR PREPARING THEREOF

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, li...

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Bibliographische Detailangaben
1. Verfasser:	ZEHNDER WOLFGANG
Format:	Patent
Sprache:	cze ; eng
Schlagworte:	ACCESSORIES FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR HUMAN NECESSITIES LAUNDERING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM OUTERWEAR PERFORMING OPERATIONS PROTECTIVE GARMENTS TEXTILES TRANSPORTING TREATMENT OF TEXTILES OR THE LIKE WALL, FLOOR OR LIKE COVERING MATERIALS, e.g. LINOLEUM,OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF AFIBROUS WEB COATED WITH A LAYER OF MACROMOLECULARMATERIAL WEARING APPAREL
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Beschreibung
Zusammenfassung:	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).