Surface modification of silica in an aqueous environment

Details Surface modification of silica in an aqueous environment Surface modification of silica in an aqueous environment

2004-01-30

2008-10-14

Tsoy, Elena (Department: 1792)

Coating processes

Applying superposed diverse coating or coating a coated base

C427S419100, C427S419200, C427S419800

Reexamination Certificate

active

07435450

ABSTRACT:
The present invention is drawn to a method of treating silica in an aqueous environment. The method can comprise steps of dispersing silica particulates in an aqueous environment to form an aqueous dispersion; reversing the net charge of a surface of the silica particulates from negative to positive using a surface activating agent, thereby forming surface-activated silica particulates dispersed in the water; and contacting the surface-activated silica particulates with organosilane reagents to form reagent-modified and surface-activated silica particulates.

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