Title:
METHOD FOR PREPARING ULTRAHIGH-PURITY COLLOIDAL SILICA PARTICLES AND ULTRAHIGH-PURITY COLLOIDAL SILICA PARTICLES PREPARED THEREBY
Document Type and Number:
WIPO Patent Application WO/2022/045517
Kind Code:
A1
Abstract:
The present invention relates to a method for preparing ultrahigh-purity colloidal silica particles and ultrahigh-purity colloidal silica particles prepared thereby. The method for preparing ultrahigh-purity colloidal silica particles, according to an embodiment of the present invention, comprises the steps of: preparing a basic material; preparing a reaction solution by adding dropwise silicon alkoxide to the basic material; aging the reaction solution; heating the aged reaction solution; and concentrating the heated reaction solution by using a vacuum evaporator.
Inventors:
KIM DONG HYUN (KR)
KIM MOON SUNG (KR)
PARK CHUL JIN (KR)
KIM GYU SU (KR)
PARK YONG HO (KR)
CHOI YONG SUNG (KR)
KIM MOON SUNG (KR)
PARK CHUL JIN (KR)
KIM GYU SU (KR)
PARK YONG HO (KR)
CHOI YONG SUNG (KR)
Application Number:
PCT/KR2021/004640
Publication Date:
March 03, 2022
Filing Date:
April 13, 2021
Export Citation:
Assignee:
ACE NANOCHEM CO LTD (KR)
International Classes:
C01B33/141; C01B33/148
Foreign References:
| KR20200087135A | 2020-07-20 | |||
| KR20180077053A | 2018-07-06 | |||
| KR20100093620A | 2010-08-25 | |||
| KR20110014486A | 2011-02-11 | |||
| US20080170979A1 | 2008-07-17 |
Attorney, Agent or Firm:
MUHANN PATENT & LAW FIRM (KR)
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