| 摘要 |
<p>Polyphosphazene polymers are prepared which contain re??ting units represented by the formulas: wherein X is represented by: wherein Y is selected from the group consisting of nnd - SO2 - and p = O or l; when p = 0, R1 and R2 are independently selected from a group consisting of substituted or unsubstituted aliphatic, aryl, araryl, and alkylaryl radicals or R1 and R2 can form a cyclic amide containing radical wherein R1 and R2 taken together are selected from a group consisting of -(CH2)-n where n = 2 to 12, wherein R3 is a lower alkyl radical or hydrogen; and when p = 1, R1 and R2 taken together form a linkage in a cyclic imide containing radical selected from a group consisting of -(CH2)-n, where n' = 2 or 3 and where R3 is as defined above, R4 is selected from the group consisting of hydrogen, halogen and alkyl radical containing 1 to 6 carbon atoms; and p' is 0 to 4, X' is a substituted or unsubstituted alkoxy, aryloxy, amino or mercapto substituent group or mixtures thereof which are compatible with an Nsubstituted amido substituent and are known in the state of the art of polyphosphazene technology; and 20? (w + y + z)? 50,000 per polymer and (y + z)> 0. The polymers of the lnvention can be utilized to form protective films and can als0 be utilized in applications such as for molding, coatings, foams and the like.</p> |
