Patent ID: 11866340
Assignee: FUJIFILM BUSINESS INNOVATION CORP.
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. Silica particles, comprising:
the silica particles containing a quaternary ammonium salt,, wherein the following expressions are satisfied,

0.90≤FBEFORE/FAFTER≤1.10, and

5≤FSINTERING/FBEFORE≤20,

wherein
FBEFORE represents a maximum frequency value of a pore diameter of 2 nm or less in the silica particles before washing, which is obtained from a pore distribution curve in a nitrogen gas adsorption method;
FAFTER represents a maximum frequency value of a pore diameter of 2 nm or less in the silica particles after washing, which is obtained from a pore distribution curve in the nitrogen gas adsorption method; and
FSINTERING represents a maximum frequency value of a pore diameter of 2 nm or less in the silica particles before washing and after sintering at 600° C., which is obtained from a pore distribution curve in the nitrogen gas adsorption method.