COMPLEX INORGANIC FILLER AND PAINT COMPOSITION CONTAINING COMPLEX INORGANIC FILLER AND PREPARATION METHOD OF PAINT COMPOSITION USING THEREOF

摘要

PURPOSE: A composite inorganic filler is provided to form a water-dispersible polyurethane paint film which has improved mechanical properties and chemical resistance without transparency loss. CONSTITUTION: A composite inorganic filler comprises water-dispersible sol which comprises an inorganic metal oxide(20) and silica(10). The inorganic metal oxide comprises at least one selected from zirconium, aluminum, germanium, titanium, or zinc. A paint composition comprises a water-dispersible polyurethane resin(30) and the composite inorganic filler. The average particle diameter of the composite inorganic filler is 10-80 nm. The paint composition additionally comprises at least one selected from a dispersant, a diluent, a pH modifier, or a leveling agent.