Amorphous precipitated silica having large liquid carrying capacity

摘要

A statistically large population of substantially dry free-flowing particles of amorphous precipitated silica characterized in that: (a) at least 80 percent by weight of said particles is retained on a 150 mesh screen; (b) at least 90 percent by weight of said particles is retained on a 200 mesh screen; (c) said particles have a dibutyl phthalate capacity ratio of greater than 1.1; (d) said particles are substantially free from dense shell; and (e) said particles are substantially spherical.