公开(公告)号：US20240262698A1

公开(公告)日：2024-08-08

申请号：US18429695

申请日：2024-02-01

Applicant: FUJIMI INCORPORATED

Inventor： Shogo TSUBOTA ,  Masaaki ITO ,  Keiji ASHITAKA ,  Yusuke KAWASAKI ,  Kazuaki IWASAKI

IPC: C01B33/141

CPC classification number: C01B33/141 ,  C01P2004/64 ,  C01P2006/22 ,  C01P2006/80

Abstract: A silica sol which does not gelate, has a high purity, and contains a high concentration of silica particles is provided. A silica sol containing silica particles and water, wherein a product of an average primary particle size of the silica particles and an average circularity of the silica particles is 15.0 or more and 31.2 or less, a concentration of the silica particles is 20 mass % or more, a total organic carbon amount per silica particle is less than 10 mass ppm, when the concentration of the silica particles is 20 mass %, a viscosity at 25° C. is 300 mPa·s or less, and a concentration of a metal impurity is less than 1 mass ppm.