| 摘要 |
PROBLEM TO BE SOLVED: To provide a synthetic resin emulsion powder which is excellent in film strength and alkali resistance and contains no aldehyde, and its preparation method. SOLUTION: The synthetic resin emulsion powder is obtained by spray drying an aqueous emulsion. The aqueous emulsion comprises a (meth)acrylic resin emulsion comprising a vinyl alcohol polymer having a degree of saponification of 70 mol% as a dispersant and a polymer comprising at least one monomer unit chosen from an acrylate monomer unit and a methacrylate monomer unit as a dispersoid. The aqueous emulsion yields≤0.5 wt.% filtration residue based on the weight of its solid content when tested in a Maron mechanical stability tester at 20°C, 1,000 rpm under a load of at most 0.5 kg/cm<SP>2</SP>for 10 min and subsequently filtered with a 60-mesh stainless wire mesh. COPYRIGHT: (C)2005,JPO&NCIPI |
