| 摘要 |
PROBLEM TO BE SOLVED: To provide a "konpeito" (pointed sugar candy ball)-like composite silica sol prepared by dispersing in a solvent "konpeito"-like silica fine particles having a plurality of warty protrusions on a silica fine particle surface. SOLUTION: The "konpeito"-like composite silica sol is prepared by dispersing in a solvent "konpeito"-like composite silica fine particles which are composite silica fine particles having a plurality of warty protrusions comprising a metal oxide other than silica on a spherical silica fine particle surface, wherein the composite silica fine particles have a surface roughness (SA1)/(SA2) in a range of 1.7-5.0, wherein SA1 is a specific surface area measured by a BET method, and SA2 is a specific surface area converted from an average particle diameter (D2) measured by an image analysis method, and the average particle diameter (D2) measured by the image analysis is in a range of 7-150 nm. COPYRIGHT: (C)2009,JPO&INPIT
|
