05750610 is referenced by 30 patents and cites 8 patents.

The present invention is hydrophobic organosilicate-modified silica gels and a method for their preparation. The method comprises two steps, where in the first step an organosilicate-modified silica hydrosol is heat treated in the presence of a strong mineral acid at a pH less than about pH 1 to form an organosilicate-modified silica hydrogel. In the second step the organosilicate-modified silica hydrogel is contacted with an organosilicon compound in the presence of a catalytic amount of a strong acid to effect hydrophobing of the organosilicate-modified silica hydrogel thereby forming a hydrophobic organosilicate-modified silica hydrogel having a surface area within a range of about 100 m.sup.2 /g to 750 m.sup.2 /g as measured in the dry state. In a preferred method the hydrophobic organosilicate-modified silica gel is contacted with a sufficient quantity of a water-immiscible organic solvent to convert the hydrophobic organosilicate-modified silica hydrogel into a hydrophobic organosilicate-modified silica organogel.

Title
Hydrophobic organosilicate-modified silica gels
Application Number
8/805102
Publication Number
5750610
Application Date
February 24, 1997
Publication Date
May 12, 1998
Inventor
Clifford Carlton Reese
Midland
MI, US
James Richard Hahn
Midland
MI, US
Gary Thomas Burns
Midland
MI, US
Agent
William F Boley
Assignee
Dow Corning Corporation
MI, US
IPC
C08G 77/06
C08K 3/10
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