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Abstract
Phosphazene rings substituted with polymerizable groups have been the subject of extensive research for many years. Polymerization reactions with these monomers result in hybrid inorganic-organic polymers, which demonstrate an enhanced flame retardancy. Furthermore the remaining PCl2-groups offer the possibility of hrther derivatization of the polymer. Most of the monomers synthesized have the double bond separated from the strong electron-withdrawing phosphazene ring by an insulating spacer.1 Another class of monomers consists of olefins with both phosphazene and electron-donating substituents directly attached to the double bond.2 In this paper some new examples of both classes are presented below: