05708069 is referenced by 26 patents and cites 11 patents.

The present invention is hydrophobic silica gels and a method for their preparation under neutral conditions. The method comprises two steps, where in the first step the pH of a silica hydrosol is adjusted with a base to within a range of about pH 3 to pH 7 to facilitate formation of a silica hydrogel. In the second step the silica hydrogel is contacted with an organosilicon compound in the presence of a catalytic amount of a strong acid to effect hydrophobing of the silica hydrogel. In a preferred method, in a third step the hydrophobic silica gel is contacted with a sufficient quantity of a water-immiscible organic solvent to convert the hydrophobic silica hydrogel into a hydrophobic silica organogel.

Title
Method for making hydrophobic silica gels under neutral conditions
Application Number
8/805398
Publication Number
5708069
Application Date
February 24, 1997
Publication Date
January 13, 1998
Inventor
Clifford Carlton Reese
Midland
MI, US
James Richard Hahn
Midland
MI, US
Qin Deng
Midland
MI, US
Gary Thomas Burns
Midland
MI, US
Agent
William F Boley
Assignee
Dow Corning Corporation
MI, US
IPC
C08K 3/10
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