Process for producing silica-based fine particle dispersion sols, silica-based fine particle dispersion sol, coating composition containing the dispersion sol, curable coating film, and substrate having the curable coating film

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United States of America Patent

PATENT NO 9039828
APP PUB NO 20120103231A1
SERIAL NO

13379878

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Abstract

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Provided are silica-based fine particle dispersion sols, processes for producing the sols, coating compositions containing the dispersion sol, curable coating films obtained from the coating composition, and substrates having the coating film. A process includes (1) mixing an aqueous aluminate solution to an alkaline silica sol which contains water-dispersible silica fine particles in a given ratio; (2) heating the mixture liquid obtained in the step (1) to 60 to 200° C. and stirring the mixture liquid at the temperature for 0.5 to 20 hours; and (3) contacting the mixture liquid obtained in the step (2) with a cation exchange resin to remove by ion exchange alkali metal ions contained in the mixture liquid and thereby controlling the pH of the mixture liquid to be in the range of 3.0 to 6.0.

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Patent Owner(s)

  • JGC CATALYSTS AND CHEMICALS LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ishihara, Yoichi Kitakyushu, JP 10 126
Nishida, Hiroyasu Kitakyushu, JP 36 258

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