cohol, polyvinyl butyral and polymers and copolymers of olefins, such as ethylene, propylene and butylene; polymers and copolymers of styrene, 2-methyl styrene and their mixtures of elastomeric copolymers; polyamides, interpolyamides such as polyhexamethylene adipamide, polycaproloctam, polyundecanamide, polyhexamethylenesebacamide; polycarbonates; polyaldehydes, polyethers; polyurethanes; polyest