Patent ID: 7611688
Filing Date: 2009-11-03
Classification: B82Y,C01G,C01P

Abstract:
1. A process for manufacturing water-dispersible rutile nano sol particles consisting of titania, comprising the steps of: i) manufacture of a mixed solvent consisting of water and hydrogen peroxide; wherein a mole ratio of water to hydrogen peroxide is 10-20; ii) having hydrolysis and the formation of peroxotitanate occur simultaneously by dropping down titanium tetraisopropoxide to said mixed solvent of water and hydrogen peroxide, wherein a mole ratio of titanium tetraisopropoxide to hydrogen peroxide is 0.01-0.03; and iii) hydrothermal treatment at 90-120° C. for 3-24 hours of an aqueous solution in which said peroxotitanate is dissolved, wherein the steps i), ii) and iii) are performed in that order.