Silica sols, method and apparatus for producing the same and use thereof in papermaking
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United States of America Patent
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May 22, 2018
Issued Date -
Oct 27, 2016
app pub date -
Dec 17, 2014
filing date -
Dec 18, 2013
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Abstract
The present invention relates to colloidal silicas having a low S-value and a high solids content, the preparation thereof, and the use thereof in the production of paper. When used in the production of paper, the colloidal silicas of the invention exhibit good retention and drainage performance so that they can be used in lower amounts compared to conventional colloidal silicas. The present invention also relates to an apparatus and a method for producing such activated colloidal silicas.
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