Synthesis of Phosphazene Containing Macromolecules from Novel Monomers

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: