Invention Grant
- Patent Title: Silica particle dispersion liquid and production method thereof
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Application No.: US17029954Application Date: 2020-09-23
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Publication No.: US11542167B2Publication Date: 2023-01-03
- Inventor: Shogo Hayashi , Miki Egami , Mitsuaki Kumazawa , Ryo Muraguchi , Michio Komatsu
- 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: Pearne & Gordon LLP
- Priority: JPJP2019-180703 20190930
- Main IPC: C01B33/141
- IPC: C01B33/141

Abstract:
Provided is a production method of a silica particle dispersion liquid which includes, preparing a linked silica particle by adding a liquid A containing alkoxysilane and a liquid B containing an alkali catalyst to a liquid containing water, an organic solvent, and an alkali catalyst in a container. The preparing a linked silica particle includes initially adding an alkali catalyst, the initially adding an alkali catalyst includes decreasing a molar ratio of an alkali catalyst to silica in the liquid in the container to 0.15 to 0.60 by adding the liquid A containing alkoxysilane to the liquid in the container, and increasing the molar ratio by 0.2 or more by adding the liquid B to the liquid having the decreased molar ratio in the container.
Public/Granted literature
- US20210094833A1 SILICA PARTICLE DISPERSION LIQUID AND PRODUCTION METHOD THEREOF Public/Granted day:2021-04-01
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