Patent ID: 8047238

Claim:
A cured in place liner for a passageway or pipe comprising: (a) a resin absorbent material layer; (b) a thermoset resin absorbed into said resin absorbent material layer; and (c) a polyester thermoplastic polyurethane coating layer on at least one side of said resin absorbent material layer; wherein said polyester thermoplastic polyurethane coating layer is made from the reaction consisting essentially of (i) a hydroxyl terminated polyester intermediate, (ii) a glycol chain extender, and (iii) a diisocyanate; wherein said thermoplastic polyurethane coating layer has a DSC 2 nd heat endotherm peak temperature of greater than about 160° C. and a melt flow index of less than 35 g/10 minutes at 210° C./3.8 kg load.