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US 8,298,979 B2Granted
Zirconium oxalate sol
AssigneeDaiichi Kigenso Kagaku Kogyo Co., Ltd.
InventorsYoshiaki Sakatani, Fumiyuki Takasaki
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Abstract
A sol of the present invention is a sol comprising zirconium oxalate compound as a dispersoid, wherein a mol ratio of oxalic acid to Zr (oxalic acid/Zr) is from 1.2 to 3 and a particle diameter D50 of the dispersoid is from 10 to 100 nm. This sol is produced by adding oxalic acid to a dispersion liquid of zirconium hydroxide, and the addition of oxalic acid is carried out in twice.
Claims3
A zirconium oxalate sol as a dispersoid, wherein
- a mol ratio of oxalic acid to Zr (oxalic acid/Zr) is from 1.2 to 3, and
- a particle diameter D50 of the dispersoid is from 10 nm to 100 nm.
Dependencies are inferred from the claim text.