| 摘要 |
PROBLEM TO BE SOLVED: To provide a silicon dioxide powder that can be incorporated quickly into liquid media. SOLUTION: The silicon dioxide powder is pyrogenically produced in the form of aggregates of primary particles having a BET surface area of 300±25 m<SP>2</SP>/g, wherein the aggregates display an average surface area of 4,800 to 6,000 nm<SP>2</SP>, an average equivalent circle diameter (ECD) of 60 to 80 nm and an average circumference of 580 to 750 nm, is produced. COPYRIGHT: (C)2006,JPO&NCIPI |
