Polyphosphazene polymers containing substituent groups which are pendently bonded to phosphorus through nitrogen and process for their preparation

摘要

Polyphosphazene polymers are prepared which contain units represented by the formulas:wherein X is a nitrogen-containing radical represented by the formulas -NIIIIIICOOR ororin which R and R are selected from the group consisting of alkyl groups containing from 1 to 12 carbon atoms, cycloalkyl groups containing from 3 to 12 carbon atoms and aryl groups, R₂ is an alkyl group of 1 to 8 carbon atoms, R₃ is selected from the group consisting of H and CN and m is an integer of from 2 to 8; wherein X' is X or is selected from the group consisting of substituted or unsubstituted alkoxy, aryloxy, amino and mercapto groups and wherein 20≼(a+b+c)≼50,000 per polymer.;The polymers of the invention can be utilized to form protective films and can also be utilized in applications such as for molding, coatings, foams and the like.