| abstract |
(57) [Summary] [Objective] To provide a water-dilutable paint that imparts improved flexibility and UV resistance to a coating in addition to outstanding corrosion and rust resistance. [Structure] A buffer solution consisting of water, sodium dodecylbenzenesulfonate, nonionic surfactant, sodium pyrophosphate and ammonium persulfate was put in an evacuated reactor, and styrene, dodecyl mercaptan, 2-ethylhexyl acrylate, and Add a monomer solution consisting of acrylic acid and methacrylic acid. The reaction mixture is heated to 57 ° C. with stirring for emulsion polymerization. When the latex obtained has reached a certain solids content, the temperature is adjusted to 79 Raise to ℃ to remove residual styrene, then add amine to obtain desired latex. This latex has excellent properties as a water-dilutable paint for coating roofs, exterior wood surfaces, flexible metals and plastics. |