Silica composite particles and method of preparing the same

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United States of America Patent

PATENT NO 9708191
APP PUB NO 20150075083A1
SERIAL NO

14555957

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Abstract

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A method of preparing silica composite particles includes preparing an alkali catalyst solution containing an alkali catalyst at a concentration of from 0.6 mol/L to 0.85 mol/L, in a solvent containing alcohol; and supplying, into the alkali catalyst solution, (i) a mixed solution of tetraalkoxysilane and an organic titanium compound in which an organic group is coupled to a titanium atom through oxygen, and (ii) an alkali catalyst. The mixed solution is supplied at a supply amount of from 0.001 mol/(mol·min) to 0.01 mol/(mol·min) relative to the alcohol, and the alkali catalyst is supplied at a supply amount of from 0.1 mol to 0.4 mol, relative to 1 mol of a total supply amount of the tetraalkoxysilane and the organic titanium compound supplied per one minute.

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Patent Owner(s)

Patent OwnerAddress
FUJIFILM BUSINESS INNOVATION CORPTOKYO 107-0052

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Iida, Yoshifumi Kanagawa, JP 68 236
Iwanaga, Takeshi Kanagawa, JP 116 1385
Tomita, Daisuke Kanagawa, JP 83 397
Zenitani, Yuka Kanagawa, JP 64 108

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