Phosphonitrilic chloride: polymerization behaviour of some hexaalkoxycyclotriphosphazenes
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説明
Abstract Electron conductivity of hexaalkoxycyclotriphosphazenes N 3 P 3 (OR) 6 is temperature dependent; the conductivity of the n-propoxy derivatives is dramatically raised at elevated temperature. Tan δ values of hexa-n-propoxy- and hexa-n-butoxy-cyclotriphosphazene increase appreciably at room temperature at high frequency. A chemical shift with 31 P-n.m.r. spectra of hexa-n-propoxycyclotriphosphazene appears at the lowest field compared with other hexaalkoxycyclotriphosphazenes. Dipropyl ether or dibutyl ether, respectively, were detected when hexa-n-propoxy- or hexa-n-butoxy-cyclotriphosphazene were heated. It is assumed that a polymerization rather than a rearrangement reaction occurs on heating with the elimation of ethers.
収録刊行物
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- Polymer
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Polymer 17 898-900, 1976-10-01
Elsevier BV
