Invention Grant
- Patent Title: Process for preparing aqueous colloidal silica sols of high purity from alkali metal silicate solutions
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Application No.: US14000930Application Date: 2012-02-09
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Publication No.: US10065865B2Publication Date: 2018-09-04
- Inventor: Claudia Fuhrmann , Dieter Oehm , Christian Panz , Florian Paulat , Rüdiger Schütte , Hartwig Rauleder , Georg Markowz , Jürgen Erwin Lang , Bodo Frings
- Applicant: Claudia Fuhrmann , Dieter Oehm , Christian Panz , Florian Paulat , Rüdiger Schütte , Hartwig Rauleder , Georg Markowz , Jürgen Erwin Lang , Bodo Frings
- Applicant Address: DE Essen
- Assignee: Evonik Degussa GmbH
- Current Assignee: Evonik Degussa GmbH
- Current Assignee Address: DE Essen
- Agency: Michael Best & Friedrich LLP
- Priority: DE102011004534 20110222; DE102011017783 20110429
- International Application: PCT/EP2012/052199 WO 20120209
- International Announcement: WO2012/113650 WO 20120830
- Main IPC: C01B33/14
- IPC: C01B33/14 ; C09G1/02 ; C01B33/143 ; C01B33/148 ; C01B33/193 ; C09K3/14 ; C01B33/12
Abstract:
The present invention relates to a process for preparing aqueous colloidal silica sols of high purity from silicate solutions, to aqueous colloidal silica sols with a specific profile of impurities, and to the use thereof. The invention further encompasses high-purity aqueous silica obtained as an intermediate in the course of the purification process, high-purity silicon dioxide obtainable by dewatering, and the use thereof.
Public/Granted literature
- US20140042359A1 PROCESS FOR PREPARING AQUEOUS COLLOIDAL SILICA SOLS OF HIGH PURITY FROM ALKALI METAL SILICATE SOLUTIONS Public/Granted day:2014-02-13
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