发明名称 |
Method for manufacturing of silica sols |
摘要 |
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.
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申请公布号 |
US6500870(B1) |
申请公布日期 |
2002.12.31 |
申请号 |
US20000713165 |
申请日期 |
2000.11.15 |
申请人 |
AKZO NOBEL N.V. |
发明人 |
LINSTEN MAGNUS OLOF;TOKARZ BOZENA STANISLAWA;LARSSON KENNETH OLOF |
分类号 |
C01B33/141;C01B33/148;(IPC1-7):C01B33/141;B01F3/12 |
主分类号 |
C01B33/141 |
代理机构 |
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