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:
Nov. 09, 2021
Filed:
Mar. 29, 2017
Applicant:
Fujimi Incorporated, Kiyosu, JP;
Inventors:
Assignee:
FUJIMI INCORPORATED, Kiyosu, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K 3/36 (2006.01); C01B 33/146 (2006.01); C09K 3/14 (2006.01); C09G 1/02 (2006.01); C09D 7/62 (2018.01); C07F 7/08 (2006.01);
U.S. Cl.
CPC ...
C01B 33/146 (2013.01); C07F 7/0834 (2013.01); C09D 7/62 (2018.01); C09G 1/02 (2013.01); C09K 3/1436 (2013.01); C09K 3/1463 (2013.01); C01P 2004/64 (2013.01); C01P 2004/80 (2013.01); C01P 2006/22 (2013.01); C08K 3/36 (2013.01);
Abstract
Provided is a means capable of introducing a sufficient amount of a cationic group onto the surface of silica particles even in a case where a silica raw material having a high silica concentration is used while occurrence of gelation is suppressed at the time of or after addition of a silane coupling agent in production of a cationically modified silica dispersion including modifying raw silica using a silane coupling agent. Adding a silane coupling agent having a cationic group to a silica raw material in which a zeta potential shows a negative value, and causing the silica raw material to react with the silane coupling agent to obtain a cationically modified silica.