Epoxy resin/acrylic composite latexes were prepared by miniemulsion polymer
ization. Epoxy resins have a functional epoxy group in them and excellent c
haracteristics, such as heat resistance and good adhesion. Acrylic latexes
have weather and water resistance. Combining the epoxy resin and the acryli
c latex was an attempt to actualize these advantages. The miniemulsion poly
merization method was effective in obtaining the composite latex. A less th
an 500-nm droplet size for the monomer preemulsion was necessary to obtain
the latex in a stable manner. Dimethylaminoethylmethacrylate and methacryli
c acid as the reactive functional monomer with an epoxy group were introduc
ed to the latexes. The. effect of the polymerization method of these functi
onal groups on the properties of latexes and their films was investigated.
The latex prepared by the two-stage polymerization method had good polymeri
zation stability, storage stability, and solvent resistance. (C) 2001 John
Wiley & Sons, Inc. J Appl Polym Sci 81: 128-133, 2001.