Authors: B A Howell YJ Cho
Publish Date: 2010/08/14
Volume: 102, Issue: 2, Pages: 517-521
Abstract
Certain fivemembered dioxaheterocyclic compounds hetero atoms may be P Si S etc contain a strained carbon–carbon bond which may undergo homolytic thermolysis at modest temperatures to generate a diradical capable of initiating vinyl polymerization If substituents contain flameretarding moieties this represents a convenient method for imparting flame retrdancy to a polymeric material Of particular interest has been 24455pentaphenyl132dioxaphospholane The thermal degradation of this compound has been studied using 13C NMR spectroscopy This may conveniently be done by monitoring the intensity of the signal for the benzylic carbon atom as a function of time and temperature A simple transformation is the conversion of the cyclic compound to the linear polymer
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