Silica particles and method of preparing the same
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United States of America Patent
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Mar 20, 2018
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app pub date -
Oct 23, 2015
filing date -
Aug 24, 2012
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Abstract
Provided are methods of preparing silica particles having two maximum values in number particle size distribution, wherein in the two maximum values, a particle size ratio (a maximum value of a small-size side/a maximum value of a large-size side) between a maximum value of a large-size side and a maximum value of a small-size side is from 0.02 to 0.3, and a number ratio (a number of silica particles having a maximum value of the small-size side/number of silica particles having a maximum value of the large-size side) is from 1 to 100, and particles within a range of 10% from the large-size side of the silica particles have an average circularity of from 0.65 to 0.90 and an average shrinkage ratio of from 10 to 50.
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