| abstract |
(57) [Summary] [PROBLEMS] To provide a water-based emulsion paint that adsorbs and decomposes substances that cause sick house syndrome and air pollution to make them harmless. SOLUTION: An aqueous emulsion paint comprising, as an essential component, a catalyst composition containing a heterovalent structure emulsion particle as a binder, a phosphate of a tetravalent metal, a hydroxide of a divalent metal, and a compound having photocatalytic activity. The outermost phase of the heterostructure emulsion particles has a glass transition temperature of -50 ° C to 1 ° C; An emulsion polymer of an ethylenically unsaturated monomer at 0 ° C., wherein the emulsion polymer contains an ethylenically unsaturated monomer having a polyethylene glycol chain and / or a polypropylene glycol chain, and at least An aqueous emulsion paint in which one phase is an emulsion polymer of an ethylenically unsaturated monomer having a glass transition temperature of 30 to 110 ° C and a minimum film-forming temperature of 10 ° C or less. |