Patent ID: 8476353

Claim:
An amorphous polyamide resin composition comprising: a resin component containing an amorphous polyamide resin; and a glass filler, wherein the glass filler contains, expressed in terms of oxides by mass %, 68 to 74% of silicon dioxide (SiO 2 ), 2 to 5% of aluminum oxide (Al 2 O 3 ), 2 to 5% of boron oxide (B 2 O 3 ), 7.1 to 10% of calcium oxide (CaO), 0 to 5% of zinc oxide (ZnO), 0 to 5% of strontium oxide (SrO), 0 to 1% of barium oxide (BaO), 1 to 5% of magnesium oxide (MgO), 0 to 2% of lithium oxide (Li 2 O), 8 to 11% of sodium oxide (Na 2 O), and 0 to 10% of potassium oxide (K 2 O), where a total amount of lithium oxide (Li 2 O), sodium oxide (Na 2 O), and potassium oxide (K 2 O) is 8 to 12%; and the refractive indices of the resin component containing the amorphous polyamide resin are 1.508 to 1.520 with respect to light having a wavelength of 589 nm; 1.515 to 1.527 with respect to light having a wavelength of 486 nm; and 1.505 to 1.517 with respect to light having a wavelength of 656 nm; the differences of refractive indices between the glass filler and the resin component are: 0.002 or less with respect to light having a wavelength of 589 nm; 0.002 or less with respect to light having a wavelength of 486 nm; and 0.002 or less with respect to light having a wavelength of 656 nm; and the amorphous polyamide resin composition has a parallel light transmittance of 65% or more and a haze of less than 25% when the composition is molded into a plate having a thickness of 2 mm.