Amorphous polyamide resin composition and molded product
AssigneeAsahi Fiber Glass Company, Limited
InventorsHideyuki Higashiyama, Keiji Sekine
Life of this patent
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Abstract
Provided are an amorphous polyamide resin composition having high transparency, and is excellent in heat resistance and stiffness, and a molded product thereof. The glass filler contains, expressed in terms of oxides by mass %, 68 to 74% of silicon dioxide (SiO2), 2 to 5% of aluminum oxide (Al2O3), 2 to 5% of boron oxide (B2O3), 2 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 5% of lithium oxide (Li2O), 5 to 12% of sodium oxide (Na2O), and 0 to 10% of potassium oxide (K2O), where a total amount of lithium oxide (Li2O), sodium oxide (Na2O), and potassium oxide (K2O) is 8 to 12%.
Claims12
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 (SiO2), 2 to 5% of aluminum oxide (Al2O3), 2 to 5% of boron oxide (B2O3), 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 (Li2O), 8 to 11% of sodium oxide (Na2O), and 0 to 10% of potassium oxide (K2O), where a total amount of lithium oxide (Li2O), sodium oxide (Na2O), and potassium oxide (K2O) 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.
An amorphous polyamide resin molded product, which is produced by molding an amorphous polyamide resin composition including:
- a resin component containing an amorphous polyamide resin;
- and a glass filler containing, expressed in terms of oxides by mass %, 68 to 74% of silicon dioxide (SiO2), 2 to 5% of aluminum oxide (Al2O3), 2 to 5% of boron oxide (B2O3), 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 (Li2O), 8 to 11% of sodium oxide (Na2O), and 0 to 10% of potassium oxide (K2O), where a total amount of lithium oxide (Li2O), sodium oxide (Na2O), and potassium oxide (K2O) 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.
Dependencies are inferred from the claim text.