| 摘要 |
PURPOSE:To obtain a coating layer having good transparency and reduced in the change of surface resistance, by coating the surface of a transparent base material with a transparent conductive coating composition prepared by dispersing a fine powder of metal oxide in a synthetic resin binder. CONSTITUTION:The surface of a transparent base material comprising polyethylene terephthalate is coated with a film forming component, wherein 85-65pts. wt. of a fine powder of metal oxide (e.g., tin oxide) is compounded with 15-35 pts.wt. of a synthetic resin binder such as polyester or polyurethane, in a form of an org. solvent solution of which the concn. is adjusted to 10-30wt% in a dry film thickness of 0.5-2.0mum by a gravure printer or a roll coater. After the formed film is dried at ambient temp. -60 deg.C, an aqueous dispersion of a polyurethane ionomer is applied to the film and dried at 50-10 deg.C. By this method, a film having good transparency and conductivity can be formed.
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