发明名称 |
SOIS BASEADOS EM SILICA |
摘要 |
The invention relates to an aqueous sol containing silica-based particles which has an S-value within the range of from 10 to 45%, a viscosity within the range of from 5 to 40 cP and a silica content of at least 10% by weight. The invention further relates to use of the aqueous sol containing silica-based particles as a drainage and retention aid in the production of paper as well as a process for the production of paper from an aqueous suspension containing cellulosic fibres, and optional filler, in which an aqueous sol containing silica-based particles and at least one charged organic polymer are added to the cellulosic suspension. |
申请公布号 |
PT1181245(E) |
申请公布日期 |
2006.09.29 |
申请号 |
PT20000929996T |
申请日期 |
2000.04.28 |
申请人 |
AKZO NOBEL N. V. |
发明人 |
PERSSON, MICHAEL;TOKARZ, MAREK;DAHLGREN, MAJ-LIS;JOHANSSON-VESTIN, HANS |
分类号 |
B01J13/00;C01B33/14;C01B33/141;C01B33/143;C01B33/146;D21H17/29;D21H17/37;D21H17/45;D21H17/68;D21H21/10;(IPC1-7):C01B33/143;C01B33/00;D21H17/00 |
主分类号 |
B01J13/00 |
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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