Silica sols, a process for the production of the silica sols...

Details Silica sols, a process for the production of the silica sols... Silica sols, a process for the production of the silica sols...

C - Chemistry, Metallurgy

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C01B 33/146 (2006.01) C01B 33/149 (2006.01) D21H 17/28 (2006.01) D21H 17/45 (2006.01) D21H 17/68 (2006.01) D21H 23/76 (2006.01) D21H 17/29 (2006.01) D21H 17/37 (2006.01)

Patent

CA 2067506

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 parti- cle growth and aluminum modification. The sols are particularly suitable for use as additives, in combination with cationic po- lymers, in papermaking.

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