| 摘要 |
PURPOSE: To produce a water-based electroconductive dispersion, excellent in environmental suitability, low cost properties, electroconductivity, transparency, strength, adhesion, etc., of a formed film and useful as a water-based electroconductive coating material, etc., by dispersing a tin oxide electroconductive powder and a layer clay mineral in a specific proportion in an aqueous dispersion medium. CONSTITUTION: This water-based electroconductive dispersion is obtained by dispersing (A) an antimony-doped tin oxide powder and (B) a cation exchangeable layer clay mineral in an amount of 0.01-2wt.% based on the component (A) (e.g. a synthetic or a natural smectitic group clay mineral such as montmorillonite, beidellite, nontronite or saponite having <=0.5μm average particle diameter) in an aqueous dispersion medium. The dispersion is prepared by dispersing, e.g. the component (A) in the aqueous dispersion medium, adding a prescribed amount of the component (B) to the resultant dispersion and further highly dispersing the component (A) therein.
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