. . . "Examples of thermoplastics include, for example, polyolefins, polyamides, such as nylon 12, nylon 11, nylon 6/12, nylon 6, and nylon 66, polyesters (e.g., PET), polyethers, polyurethanes, polyureas, polyvinyls, polyacrylics, fluoropolymers, copolymers and block copolymers thereof, such as block copolymers of polyether and polyamide, e.g., Pebax???; and mixtures thereof." . . .