Patent ID: 8299158
Filing Date: 2012-10-30
Classification: C08L

Abstract:
1. A polyester resin composition having a content of a cyclic trimer is in a range of 0.1 to 0.7% by weight, a content of a carboxylic end group is in a range of 15 to 40 equivalent/ton, an intrinsic viscosity is in a range of 0.55 to 0.80 dl/g, and an absorbance at a wavelength of 365 nm of a solution prepared using orthochlorophenol as a solvent (0.8 g/10 ml) is in a range of 0.22 to 0.36, wherein the polyester resin composition has a content of bis(hydroxyethyl)terephthalate in a range of 90 to 200 ppm.