Siliceous composition and its use in papermaking
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United States of America Patent
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Jan 17, 2012
Grant Date -
Sep 24, 2009
app pub date -
Sep 13, 2007
filing date -
Sep 27, 2006
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Abstract
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.
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