| abstract |
A polyester resin composition comprising a polyester (A), a titanium oxide (B), a phenol antioxidant (C) and a phosphorus antioxidant (D), wherein the polyester (A) comprises a dicarboxylic acid (D) is a polyester having a structural unit derived from an acid and a structural unit derived from a diol containing at least 50 mol% of 1,4-cyclohexanedimethanol, wherein the phosphorus antioxidant (D) Wherein the content of the titanium oxide (B) is from 20 to 90 parts by mass and the content of the phenolic antioxidant (C) is from 0.1 to 0.8 parts by mass based on 100 parts by mass of the polyester (A) And a phosphorus antioxidant (D) satisfy the following formula (I), an LED reflector comprising the composition, and a light emitting device comprising the reflector. 0.20? Mass ratio [(C) component / (D) component]? 5.00 (I) |