Patent ID: 7820561
Filing Date: 2010-10-26
Classification: D06N,Y10T

Abstract:
1. Coated, water-vapor-pervious, and fungus-resistant wovens having a water vapor transmission rate of 800 g/m 2 to 2800 g/m 2 ×24 h at a temperature in the range of 20° C. to 30° C. and a water pressure resistance of 800 mm to 1800 mm hydrohead produced by a process comprising: (a) impregnating a precleaned woven comprising fibers and yarns and having a basis weight of 150 g/m (b) drying the impregnated woven of (a), (c) subsequently coating the dried woven of (b) with an aqueous dispersion of a hydrophilic polyurethane, said dispersion comprising 3 wt. % to 5 wt. % of a fungicide, (d) drying the coated woven of (c), and (e) subsequently reimpregnating the dried woven of (d) with an aqueous hydrophobicizer, and, (f) drying the impregnated woven of (e), wherein the hydrophilic polyurethane is applied in (c) in an amount such that the dried woven of (f) contains a coating in an amount of between 30 g/m