Poly[(Me methacrylate)-co-(Bu acrylate)-co-(methacrylic acid)] (I) and poly[(Bu methacrylate)-co-methacrylamide] (II), prepared in Authors' lab, were dissolved in xylene and each used, 10 mL/100 mL H2O, to prepare 50 dispersions containing 20-45 mg I/mL and one of the 16 surfactants examined, 1-10 mg/mL, and 50 dispersions containing 4-12 mg II/mL and 1-12 mg surfactant/mL as stabilizer. With I, most stable dispersions were those stabilized with a nonylphenol-ethylene oxide adduct (Rokafenol N-705), oxyethylenated fatty amine (Rokamin SR-22) or oxyethylenated dodecanol (Rokanol L-10); with II, the best stabilizers were Rokafenol N-705, Rokamin SR-8, Rokamin SR-22, oxyethylenated nonylphenolsulfosuccinic acid monoester Na salt, and Rokafenol N-8.