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Phosphorane Polymers. Part I.

Report Number: ML TDR 64-181 Part 1
Author: Baldwin, Roger A.
Author: Billig, Franklin A.
Corporate Author: American Potash and Chemical Corporation
Date of Publication: 1964-07-31
Pages: 75
AD Number: AD0445844

Abstract:
Initial preparations of polyphosphorane polymers based on phenylphosphonyl diazide and several bis-tertiary phosphines were carried out. The thermal stability of the polymer based upon an aromatic linked bis-tertiary phosphine was found to be considerably higher than that of the corresponding methylene-linked polymers (approximate beginning of decomposition at 477 C. and 278 C., respectively). In addition, a series of mono-and bisphosphon-, sulfon-, and silylimidophosphorane polymer prototypes has been prepared. Thermal and hydrolytic properties of these materials have been investigated. Bis-phosphoranes based upon p-phenylene and 4,4'-biphenylene bistertiary phosphines were found to have the highest approximate beginnings of decomposition (by differential thermal analysis) of approximately 465 C. and 460-475 C. Various functionally substituted phosphoranes were also prepared in order to investigate potential methods for the cross-linking of phosphorane chains as well as to investigate methods for the synthesis of desired intermediates.


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