Emulsion Copolymerization of Styrene Butyl Acrylate Using Urethane Prepolymer Polymerizable Emulsifying Agent

Anionic urethane prepolymer polymerizable emulsifying agent synthesized was applied to emulsion copolymerization of styrene and butyl acrylate. Study was made of the effects of concentration of emulsifying agent and various kinds of initiators on polymerization stability.Morphology and size of latex particles were observed with Transmission Electron Microscope and water repellancy and mechanical properties of latex film were determined.The results showed that styrene-butyl acrylate emulsion of good stability could be prepared using water soluble initiator when polymerizable emulsifying agent was in appropriate content and the film formed from this latex had quite a good water repellancy and mechanical properties.