Patent ID: 7700682
Filing Date: 2010-04-20
Classification: C03C,Y10T

Abstract:
1. A glass filler in the form of fiber, milled fiber, powder or flakes for a polycarbonate resin, which comprises, as inorganic components in the entire glass filler, from 50 to 60 mass % of silicon dioxide (SiO from 7 to 9.9 mass % of aluminum oxide (Al from 10 to 20 mass % of calcium oxide (CaO), from 0 to 5 mass % of magnesium oxide (MgO), from 3 to 6 mass % of zirconium oxide (ZrO from 0 to 10 mass % of zinc oxide (ZnO), from 0 to 10 mass % of strontium oxide (SrO), from 7 to 14 mass % of barium oxide (BaO), from 0 to 2 mass % of lithium oxide (Li from 0 to 2 mass % of sodium oxide (Na from 0 to 2 mass % of potassium oxide (K provided that: the total content of the lithium oxide (Li the total content of titanium oxide (TiO the total content of boron oxide (B the total content of the calcium oxide (CaO, the zinc oxide (ZnO), the strontium oxide (SrO) and the barium oxide (BaO) is from 25 to 35 mass %, the total content of the SiO the glass has a refractive index of from 1.581 to 1.587 to a light with a wavelength of 589 nm.