| 摘要 |
A production method of a zirconia sol includes; (A) mixing a dicarboxylic acid compound with a zirconium compound in an aqueous medium, in which a molar ratio of the dicarboxylic acid compound is more than 1 and less than or equal to 10 per mol of zirconium atom in the zirconium compound, and (B) adding 0.7-2.5 mol of a water-soluble organic base per mol of the dicarboxylic acid compound contained in a mixture obtained by the process (A) to the mixture and then treating hydrothermally the resultant mixture. |
