Patent ID: 6582786
Filing Date: 2003-06-24
Classification: A43B,B32B,Y10T

Abstract:
A durable membrane, comprising a microlayer polymeric composite,wherein said microlayer polymeric composite comprises at least about 10 microlayers, each microlayer individually being up to about 100 microns thick, comprising first microlayers comprising a first polymeric material and second microlayers comprising a second polymeric material; wherein the first polymeric material comprises a member selected from the group consisting of thermoplastic polyester diol-based polyurethanes, thermoplastic polyether diol-based polyurethanes, thermoplastic polycaprolactone diol-based polyurethanes, thermoplastic polycarbonate diol-based polyurethanes and combinations thereof; and wherein the second polymeric material comprises a member selected from the group consisting of ethylene-vinyl alcohol copolymers, poly(vinylidene chloride), acrylonitrile copolymers, poly(ethylene terephthalate), polyamides, crystalline polymers, polyurethane engineering thermoplastics, and combinations thereof.