发明名称 |
A method for manufacturing of silica sols. |
摘要 |
The invention relates to a method for production of high purity silica sols comprising the steps: (a) adding a phosphonic acid-based complexing agent to the silicic acid-containing solution forming complexes with metal cations present in said solution; (b) forming in said silicic acid-containing solution a precipitation containing phosphonic acid-based complexing agent and metal cations; (c) removing the precipitation from the solution; and, (d) polymerising the silicic acid in the solution to obtain a silica sol. The invention also relates to silica sols containing at least one phosphonic acid-based complexing agent. |
申请公布号 |
ZA200201906(B) |
申请公布日期 |
2003.03.07 |
申请号 |
ZA20020001906 |
申请日期 |
2002.03.07 |
申请人 |
AKZO NOBEL N.V. |
发明人 |
MAGNUS OLOF LINSTEN;BOZENA STANISLAWA TOKARZ;KENNETH OLOF LARSSON |
分类号 |
C01B33/141;C01B;C01B33/148 |
主分类号 |
C01B33/141 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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