发明名称 |
Silica sols in papermaking |
摘要 |
Silica sols having a high content of microgel and aluminum modified particles with high specific surface area. The sols can be prepared by a process comprising acidification of a water glass solution, alkalization at a certain dry substance content, particle growth and aluminum modification. The sols are particularly suitable for use as additives, in combination with cationic polymers, in papermaking.
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申请公布号 |
US5643414(A) |
申请公布日期 |
1997.07.01 |
申请号 |
US19940265785 |
申请日期 |
1994.06.27 |
申请人 |
EKA NOBEL AB |
发明人 |
JOHANSSON, HANS ERIK;LARSSON, BO VALDEMAR |
分类号 |
C01B33/141;C01B33/00;C01B33/12;C01B33/142;C01B33/146;C01B33/149;D21H;D21H17/29;D21H17/37;D21H17/45;D21H17/63;D21H17/68;D21H21/10;D21H23/76;(IPC1-7):D21H21/10 |
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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