Polyphosphazene copolymers containing substituents derived from pyruvate esters

摘要

Polyphosphazene copolymers are prepared which contain randomly distributed units represented by the formulas: wherein X is in which R is alkyl containing from 1 to 12 carbon atoms or aryl, wherein X' is selected from the group consisting of substituted or unsubstituted alkoxy, aryloxy, amino and mercapto groups and wherein 20