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6609047 
Journal Article 
Application of reactive emulsifier in soap-free emulsion polymerization of acrylates 
Xu, Wh; Li, Sx 
2015 
34 
6 
297-302 
INSPEC:15830794 
A soap-free acrylate emulsion was prepared by semi-continuous seeded a ulsion polymerization using butyl acrylate (BA), styrene (St), and methyl methacrylate (MMA) as monomers and sodium alIyloxy hydroxy propanesulfonate (HAPS), ammonium allyloxy nonylphenol polyoxyethylene(10) ether sulfate (DNS-86), allyloxy nonylphenoxy poly(ethyleneoxy) (10) ether (ANPEO10), or allyloxy nonylphenoxy poly(ethyleneoxy) (10) ether monophosphoric acid (ANPEO10-P1) or the mixture of them as reactive emulsifier. The effects of type and amount of reactive emulsifier on properties of emulsion were analyzed. The chemical structure of the emulsion was characterized by Fourier-transform infrared spectroscopy (FT-IR). The water resistance and flame retardance of the inflating water-based fire-retardant coatings prepared by presented acrylate soap-free emulsion and commercial acrylic emulsion were compared through water resistance test and cone calorimetry. The results showed that the emulsion has the best chemical, thermal, and storage stabilities when only DNS-86 is used. The comprehensive performance of the emulsion obtained with 2.5%-3.0% DNS-86 is optimal: the largest solid content and monomer conversion, while the smallest average particle size, polydispeisity index, and water contact angle of the film obtained therefrom. The performances of inflating water-based fire-retardant coating prepared by the home-made soap-free acrylate emulsion are apparently superior to that obtained by the commercial acrylic emulsion.