Method for producing zirconia sol
AssigneeNissan Chemical Industries, Ltd.
InventorsHirokazu Kato, Yutaka Ohmori, Natsumi Tsuihiji
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Abstract
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.
Claims11
A method for producing a zirconia sol, the method comprising:
- (A) mixing a dicarboxylic acid compound with a zirconium compound in an aqueous medium, wherein 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 a resultant mixture.
A method for producing a zirconia sol, the method comprising:
- (A) mixing a dicarboxylic acid compound with a zirconium compound in an aqueous medium, wherein 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′) after heating a mixture obtained by the process (A) to 50-100° C., adding 0.7-2.5 mol of a water-soluble organic base per mol of the dicarboxylic acid compound contained in the mixture to the mixture and then treating hydrothermally a resultant mixture.
Dependencies are inferred from the claim text.