| abstract |
A polyester composition for an LED reflector, an LED reflector comprising the composition, and a light-emitting device comprising the reflector, the polyester composition comprising a polyester (A), a titanium oxide (B), and a phenol system An antioxidant (C) and a phosphorus-based antioxidant (D), and the polyester (A) has a constituent unit derived from a dicarboxylic acid containing 50 mol% or more of terephthalic acid, and contains 50 mol% a polyester of a constituent unit of the diol of 1,4-cyclohexanedimethanol; the phosphorus-based antioxidant (D) contains three or more groups represented by the formula (1) in its molecule, and is relative to 100 The content of the polyester (A), the titanium oxide (B) is 20 to 90 parts by mass, the content of the phenolic antioxidant (C) is 0.1 to 0.8 parts by mass, and the content of the phosphorus-based antioxidant (D) is satisfied. In the following formula (I), the mass ratio of 0.20 [ [(C) component / (D) component] ≦ 5.00 (I). |