Organophosphorus polymers Communication 2. Polycondensation of bis-2-chloroethyl alkylaryl-phosphonates

Abstract

1. An investigation was made into the polycondensation of bis-2-chloroethyl methyl-, chloromethyl-, and phenyl-phosphonates, and also of tris-2-chloroethyl phosphate. 2. It was shown that the polycondensation of the bis-2-chloroethyl esters is accompanied by the separation of a product of low molecular weight (dichloroethane) and the formation of a polymer. 3. It was found that the polycondensation is accompanied by formation of a cyclic ester. 4. It was shown that thermal degradation of the polymer occurs at 250° with formation of methylphosphonic acid and liberation of acetaldehyde.