Patent ID: 7462682

Claim:
A tinted polyester resin composition comprising an aromatic polyester polymer and a tinting agent, wherein (a) the tinting agent is present in a content of 0.1 to 10 ppm by mass, and comprises either: a mixture of a blue color-tinting coloring matter and a violet color-tinting coloring matter in a mass ratio in the range of from 90:10 to 40:60; or a mixture of a blue color-tinting coloring matter and a red or orange color-tinting coloring matter in a mass ratio in the range of from 98:2 to 80:20, (b) a maximum absorption wavelength of the tinting agent in an absorption spectrum in the wavelength range of 380 to 780 nm is in the range of 540 to 600 nm, determined in a chloroform solution of the tinting agent in a concentration of 20 mg/liter and at an optical path having a length of 1 cm, and (c) ratios of optical absorbances A 400 , A 500 , A 600 and A 700 of visible light spectra at wavelengths of 400 nm, 500 nm, 600 nm and 700 nm respectively to an optical absorbance A max in the visible light spectrum at the maximum absorption wavelength, of the tinting agent, determined in the above-mentioned chloroform solution o f the tinting agent at the optical path having a length of 1 cm, satisfy the requirements (1) to (4): 0.00 ≦A 400 /A max ≦0.20 (1) 0.10 ≦A 500 /A max ≦0.70 (2) 0.55 ≦A 600 /A max ≦1.00 (3) 0.00 ≦A 700 /A max ≦0.05 (4).