Siliceous composition and its use in papermaking

Details Siliceous composition and its use in papermaking Siliceous composition and its use in papermaking

D - Textiles, Paper

21

H

D21H 17/13 (2006.01) D21H 21/12 (2006.01)

Patent

CA 2664490

An aqueous polysilicate composition comprising a polysilicate microgel based component in association with particles derived from colloidal polysilicate. The invention also concerns a process for preparing an aqueous polysilicate composition comprising mixing an aqueous colloidal polysilicate with an aqueous phase of a polysilicate microgel. The aqueous polysilicate composition is more effective than colloidal silica and is more stable than a conventional polysilicate microgel.

L'invention concerne une composition de polysilicate aqueuse comprenant un composé à base de microgel de polysilicate en association avec des particules dérivées de polysilicate colloïdal. L'invention a aussi trait à un procédé servant à préparer une composition de polysilicate aqueux et consistant à mélanger un polysilicate colloïdal aqueux avec une phase aqueuse d'un microgel de polysilicate. La composition de polysilicate aqueux est plus efficace que la silice colloïdale et elle est plus stable qu'un microgel de polysilicate traditionnel.

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