A glass filler for a polycarbonate resin, whereby the refractive index of the glass filler can be improved to the same level as a polycarbonate resin, and the transparency of a molded product after reinforced with such a filler can be maintained without coloration, and a polycarbonate resin composit
A glass filler for a polycarbonate resin, whereby the refractive index of the glass filler can be improved to the same level as a polycarbonate resin, and the transparency of a molded product after reinforced with such a filler can be maintained without coloration, and a polycarbonate resin composition employing such a filler, are provided. The polycarbonate resin composition comprises a polycarbonate resin and a glass filler which comprises, as inorganic components in the entire glass filler, from 50 to 60 mass % of silicon dioxide (SiO2), from 7 to 15 mass % of aluminum oxide (Al2O3), from 10 to 20 mass % of calcium oxide (CaO), from 0 to 5 mass % of magnesium oxide (MgO), from 2 to 8 masse of zirconium is oxide (ZrO2), from 0 to 10 mass % of zinc oxide (ZnO), from 0 to 10 mass % of strontium oxide (SrO), from 0 to 18 mass % of barium oxide (BaO), from 0 to 2 mass % of lithium oxide (Li2O), from 0 to 2 mass % of sodium oxide (Na2O), and from 0 to 2 mass % of potassium oxide (K2O), provided that the total content of the lithium oxide (Li2O), the sodium oxide (Na2O) and the potassium oxide (K2O) is from 0 to 2 mass % based on the entire glass filler.
대표청구항▼
What is claimed is: 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 (SiO2), from 7 to 9.9 mass % of aluminum oxide (Al2O3), from 10 to 20 ma
What is claimed is: 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 (SiO2), from 7 to 9.9 mass % of aluminum oxide (Al2O3), 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 (ZrO2), 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 (Li2O), from 0 to 2 mass % of sodium oxide (Na2O), and from 0 to 2 mass % of potassium oxide (K2O), provided that: the total content of the lithium oxide (Li2O), the sodium oxide (Na2O) and the potassium oxide (K2O) is from 0 to 1.5 mass % based on the entire glass filler, the total content of titanium oxide (TiO2) is 0.1 mass % or less, the total content of boron oxide (B2O3) is 0.1 mass % or less, 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 SiO2 and the Al2O3 is from 57 to 67 mass %, and the glass has a refractive index of from 1.581 to 1.587 to a light with a wavelength of 589 nm. 2. The glass filler for a polycarbonate resin according to claim 1, wherein the total content of the zinc oxide (ZnO), the strontium oxide (SrO) and the barium oxide (BaO) is from 5 to 20 mass % based on the entire glass filler. 3. The glass filler for a polycarbonate resin according to claim 1, which is in the form of fiber. 4. A polycarbonate resin composition comprising the glass filler as defined in claim 1 and a polycarbonate resin. 5. The polycarbonate resin composition according to claim 4, wherein the content of the glass filler is from 5 to 60 mass %. 6. The polycarbonate resin composition according to claim 4, wherein the difference between the refractive index of the polycarbonate resin and the refractive index of the glass filler is not more than 0.001 to a light with a wavelength of 589 nm. 7. The polycarbonate resin composition according to claim 4, which, when formed into a flat plate having a thickness of from 0.1 to 5 mm, has a parallel light transmittance of at least 65%. 8. The glass filler according to claim 1, wherein the Al2O3 is present in an amount of from 7 to 9.8 mass %.
Horiuchi Tetsuro (Gardena CA) Goldman Arnold E. (Canoga Park CA) Raghavan Durai N. (Plano TX), Lathanide series oxide modified alkaline-resistant glass.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.