Outdoor films stabilized against chemical attack.

摘要

A new and improved environmental chemicals resistant light stabilizer package for thermoplastic substrates is disclosed. The stabilizer package comprises a specific oligomeric hindered amine light stabilizer with an ultra-violet absorber in specified weight ratios. The stabilizer package is useful for stabilizing thermoplastic shaped articles intended for outdoor use in areas where environmental chemicals such as agricultural chemicals, pool chemicals and the like are employed. In a preferred embodiment, a new and improved substantially colorless, light stable greenhouse film is provided which exhibits good weatherability and retention of physical properties even after repeated exposure to, for example, pesticides, herbicides and the like.