| 发明名称 | Synthetic amorphous silica powder and method for producing same | ||
| 摘要 | The synthetic amorphous silica powder of the present invention is characterized in that it comprises a synthetic amorphous silica powder obtained by applying a spheroidizing treatment to a granulated silica powder, and by subsequently cleaning and drying it so that the synthetic amorphous silica powder has an average particle diameter D50 of 10 to 2,000 μm; wherein the synthetic amorphous silica powder has: a quotient between 1.35 exclusive and 1.75 inclusive obtained by dividing a BET specific surface area of the powder by a theoretical specific surface area calculated from the average particle diameter D50; a real density of 2.10 to 2.20 g/cm3; an intra-particulate porosity of 0 to 0.05; a circularity between 0.50 inclusive and 0.75 inclusive; and a spheroidization ratio between 0.20 inclusive and 0.55 exclusive. | ||
| 申请公布号 | US8883110(B2) | 申请公布日期 | 2014.11.11 |
| 申请号 | US201013520807 | 申请日期 | 2010.12.27 |
| 申请人 | Mitsubishi Materials Corporation | 发明人 | Ueda Toshiaki |
| 分类号 | C01B33/158 | 主分类号 | C01B33/158 |
| 代理机构 | Edwards Wildman Palmer LLP | 代理人 | Edwards Wildman Palmer LLP |
| 主权项 | 1. A synthetic amorphous silica powder obtained by applying a spheroidizing treatment to a granulated silica powder, and by subsequently cleaning and drying it so that the synthetic amorphous silica powder has an average particle diameter D50 of 10 to 2,000 μm; wherein the synthetic amorphous silica powder has: a quotient between 1.35 exclusive and 1.75 inclusive obtained by dividing a BET specific surface area of the powder by a theoretical specific surface area calculated from the average particle diameter D50; a real density of 2.10 to 2.20 g/cm3; an intra-particulate porosity of 0 to 0.05; a circularity between 0.50 inclusive and 0.75 inclusive; and a spheroidization ratio between 0.20 inclusive and 0.55 exclusive. | ||
| 地址 | Tokyo JP | ||