Silica sol and method for producing the same

Details Silica sol and method for producing the same Silica sol and method for producing the same

2007-07-25

2011-11-08

Choi, Ling (Department: 1763)

Colloid systems and wetting agents; subcombinations thereof; pro

Continuous liquid or supercritical phase: colloid systems;...

Primarily organic continuous liquid phase

C516S086000

Reexamination Certificate

active

08053479

ABSTRACT:
This invention provides a high-purity, high-concentrated silica sol with long-term stability and low viscosity by preventing viscosity-increase after production, and method for producing the same. In one embodiment, the silica sol produced by an alkoxide method comprises at least a dispersing agent and silica, wherein the concentration of said dispersing agent is 10-3000 ppm with respect to the silica, wherein said dispersing agent may be an inorganic acid, inorganic acid salt, organic acid or organic acid salt whose degradation temperature and boiling point are both 60° C. or higher, wherein said silica sol has a silica concentration of 20% weight or higher.

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PCT International Search Report for Fuso Chemical Co., Ltd., International App'l No. PCT/JP2007/064607, Jul. 25, 2007, Dated Oct. 30, 2007.
PCT Written Opinion of the International Searching Authority, International App'l No. PCT/JP2007/064607, Jul. 25, 2007, Dated Oct. 30, 2007.

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