发明名称 |
Silica-based sols |
摘要 |
The invention relates to an aqueous silica-based sol comprising a nitrogen-containing organic compound and silica-based particles with a specific surface area of at least 300 square meters per gram of silica. The invention further relates to a process for the production of an aqueous silica-based sol comprising a nitrogen-containing organic compound which comprises incorporating a nitrogen-containing organic compound into a silica-based sol containing silica-based particles with a specific surface area of at least 300 square meters per gram of silica. The invention also relates to the use of an aqueous silica-based sol comprising a nitrogen-containing organic compound and silica-based particles with a specific surface area of at least 300 square meters per gram of silica as a flocculating agent in the production of pulp and paper and in water purification. The invention further relates to a process for the production of paper from an aqueous suspension containing cellulosic fibres, and optional fillers, which comprises adding to the suspension (i) an aqueous silica-based sol comprising an organic nitrogen-containing compound and (ii) at least one charged organic polymer, forming and draining the suspension on a wire.
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申请公布号 |
US2003066617(A1) |
申请公布日期 |
2003.04.10 |
申请号 |
US20020168408 |
申请日期 |
2002.09.23 |
申请人 |
GREENWOOD PETER;LINSTEN MAGNUS OLOF;JOHANSSON-VESTIN HANS E |
发明人 |
GREENWOOD PETER;LINSTEN MAGNUS OLOF;JOHANSSON-VESTIN HANS E |
分类号 |
B01F17/16;B01J13/00;C01B33/148;C01B33/149;C02F1/52;C02F1/54;C02F1/56;D21H17/68;D21H21/10;D21H23/14;(IPC1-7):D21H21/10;D21H17/74;C01B33/12 |
主分类号 |
B01F17/16 |
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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