POLYESTER COMPOSITIONS WITH IMPROVED HEAT AND LIGHT AGING

摘要

Provided is a polymer composition having high light reflectivity after heat and light treatment appropriate to the production of the components of a light-emitting diode. The polymer composition comprises: at least one piece of polyester; at least one inorganic additive (A); and at least one inorganic additive (B) including magnesium oxide, barium oxide, cerium oxide (IV), and calcium oxide.