Silica sols in papermaking

Details Silica sols in papermaking Silica sols in papermaking

1994-06-27

1997-07-01

Chin, Peter

Paper making and fiber liberation

Processes and products

Non-fiber additive

1621682, 1621683, 1621816, 162183, D21H 2110

Patent

active

056434146

ABSTRACT:
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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R.K. Iler, The Chemistry of Silica, John Wiley & Sons, Inc. 1979, pp. 7 and 174-175.

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