| 摘要 |
<p>Polyphosphazene polymers are prepared which contain units represented by the formulas: and wherein X is a nitrogen-containing radical represented by the formulas -NHNHCOOR or or or in which R and R1 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.</p> |
