Polysulphones from allyl esters of phosphorus acids

Abstract

Polysulphones containing phosphorus have been obtained by reacting allyl-alkyl methylphosphonates or allyl-aryl β-chloroethylphosphonates with sulphur dioxide. The reaction temperature limits have been determined. The effect of the structure of the phosphorus acid allyl esters on the temperature of the polysulphone-formation reaction was studied. It is shown that branching of the monomer lowers the limiting temperature. Deviation from this effect occurs in the case of allyl esters of chloroalkyl-phosphonic acids. It was found that change in the position of a substituent on the aromatic ring does not affect the limiting temperature substantially.