| http://www.w3.org/ns/prov#value | - The second intermediate layer may be formed of materials such as polyether or polyester thermoplastic urethanes, thermoset urethanes, and ionomers such as acid-containing ethylene copolymer ionomers, including E/X/Y terpolymers where E is ethylene, X is an acrylate or methacrylate-based softening comonomer present in 0 to 50 weight percent and Y is acrylic or methacrylic acid present in 5 to 35 we
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