- Patent Title: Silica particle liquid dispersion and production method therefor
-
Application No.: US16478600Application Date: 2018-01-18
-
Publication No.: US11254580B2Publication Date: 2022-02-22
- Inventor: Miki Egami , Mitsuaki Kumazawa , Hirotada Arakane , Ryo Muraguchi , Toshiharu Hirai
- Applicant: JGC CATALYSTS AND CHEMICALS LTD.
- Applicant Address: JP Kanagawa
- Assignee: JGC CATALYSTS AND CHEMICALS LTD.
- Current Assignee: JGC CATALYSTS AND CHEMICALS LTD.
- Current Assignee Address: JP Kanagawa
- Agency: Greenblum & Bernstein, P.L.C.
- Priority: JPJP2017-008999 20170120
- International Application: PCT/JP2018/001403 WO 20180118
- International Announcement: WO2018/135585 WO 20180726
- Main IPC: C01B33/145
- IPC: C01B33/145 ; C01B33/141 ; C09K3/14

Abstract:
A method for producing a liquid dispersion containing irregular-shaped silica particles in which two or more primary particles are linked together, by simultaneously adding a liquid A containing silane alkoxide and a liquid B containing an alkali catalyst and water to a liquid I consisting substantially of an organic solvent to cause hydrolysis and polycondensation of the silane alkoxide, wherein the period from the start of the addition until the silica concentration of the reaction system at the end of the addition reaches 70% is 20% or less of the full reaction time period.
Information query