Abstract
The synthesis of monomers containing phosphorus, their polymerization or copolymerization and the flame resistance of these polymers were investigated. It was found that diethyl-(p-vinylphenyl) phosphate (PO) and diethyl-(p-vinylphenyl) thiophosphate (PS) could be prepared readily from the sodium salt of p-vinylphenol. PO and PS underwent polymerization and copolymerization with methyl methacrylate (MMA), styrene (ST), methyl acrylate (MA), and maleic anhydride (Manh) to produce glassy and transparent solids, that are flame resistant. The copolymers of PO–Manh and PS–Manh were found to be alternating. The flame resistance was better with the polymers containing phosphorus–oxygen than phosphorus–sulfur. However, the flame resistance of the copolymers was not always higher than that of mixture of homopolymers. An aggregation state of phosphorus groups may effectuate high flame resistance of polymer mass.
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Furukawa, J., Kobayashi, E. & Wakui, T. Phosphorus-Containing Polystyrene Derivatives as Flame Resistance. Polym J 12, 277–285 (1980). https://doi.org/10.1295/polymj.12.277
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DOI: https://doi.org/10.1295/polymj.12.277
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