The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 29, 2025
Filed:
Dec. 18, 2023
Applicant:
Fujimi Incorporated, Kiyosu, JP;
Inventor:
Keiji Ashitaka, Kiyosu, JP;
Assignee:
FUJIMI INCORPORATED, Kiyosu, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 33/145 (2006.01);
U.S. Cl.
CPC ...
C01B 33/145 (2013.01);
Abstract
Provided is a method for producing a silica sol. A gel-like material cannot be generated and highly associated silica particles can be obtained. A method for producing a silica sol comprises a step of making a reaction liquid by mixing liquid (A) comprising an alkaline catalyst, water, a first organic solvent and silica particles for association with liquid (B) comprising at least one of tetramethoxysilane and a condensate thereof and a second organic solvent, wherein during the mixing, an addition rate of the liquid (B) is 8.5×10to 5.6×10(mol of silicon atoms in liquid (B)/mol of water in liquid (A)) per minute.