Crosslinked aceto polystyrene was obtained by reacting crosslinked polystyrene and acetic anhydride with aluminium trichloride as catalyst. The effects of the solvent

reaction temperature

reaction time

amount of reagents and catalyst on the acetylation were investigated. Reaction of aceto polystyrene with phosphorus trichloride followed by treatment with glacial acetic acld and hydrolysis by water yields α-hydroxy phosphonic resin. Solvents

reaction temperature and time affect the phosphorylation.