PRODUCTION OF FINE POWDER OF ANTIMONY-DOPED TIN OXIDE AND TRANSPARENT CONDUCTIVE COATING MATERIAL

摘要

PROBLEM TO BE SOLVED: To obtain a transparent conductive film having an antistatic property with a small amt. of compounding by neutralizing an aq. acidic soln. contg. an Sn salt and Sb salt with an alkali in the presence of a specific amt. of a cation exchange layer-like clay ore to cause the codeposition of the hydroxide of Sn and Sb and calcining this hydroxide, thereby converting the hydroxide to oxide. ;SOLUTION: The Sn and Sb metal salts are compounded and are dissolved in the aq. acid soln. in such a manner that the metal oxide having the prescribed compsn. is obtd. in the final. The cation exchange layer-like clay ore having an average particle size of ≤0.3μm is added to this soln. at 0.1 to 3.0wt.% of the total of the weights of both metal salts in terms of the oxide and thereafter, the alkali is added to neutralize the soln. at pH1 to 4 and 50 to 90°C, by which the codeposit of the Su and Sb hydroxide is obtd. This codeposit is recovered and calcined to obtain the Sb-doped Sn (ATO) oxide. This oxide is made into the fine powder of an average particle size of ≤0.1μm. The fine powder of the ATO is compounded with an aq. binder (solid content) at 10 to 300 pts.wt. thereof, by which a transparent conductive coating material is obtd.;COPYRIGHT: (C)1997,JPO