MULTILAYER POLYMER EMULSION

PROBLEM TO BE SOLVED: To provide a multilayer polymer emulsion which is excellent in low-temperature film formation properties in the absence of a film formation assistant and can form a film excellent in strength and surface nontackiness; and a water-based emulsin coating material containing the emulsion and useful especially for building interiors and exteriors. SOLUTION: The multilayered polymer emulsion does not substantially contain a volatile organic compound. In the emulsion, a polymer for forming the innermost layer has a glass transition temperature of 35-120°C; a polymer for forming the intermediate layer has a glass transition temperature of -65 to 0°C; a polymer for forming the outermost layer has a glass transition temperature of 35-120°C; the wt. ratio (in terms of solid content) of innermost layer/intermediate layer/outermost layer is (3-30)/(50-92)/(5-40); and the emulsion particle size is 0.20-2.0μm. COPYRIGHT: (C)2004,JPO