| abstract |
A compostable thermoplastic polymer composition which comprises a thermoplastic polymer, a transition metal salt selected from cobalt, manganese, copper, cerium, vanadium and iron and a fatty acid or ester having 10 to 22 carbon atoms containing unsaturated species and free acid. Said composition will degrade by oxidation to reach a state of crumbling within a period of at least 14 days, at 60 ° C and at a relative humidity of at least eighty percent. The present invention also describes structures in degradable multilayer polyolefins incorporating a transition metal in the form of a salt, degradable and compostable multilayer screen films, degradable compositions and articles resistant to radiation, and methods for forming and using these. compositions, structures and articles. |