HYBRID ORGANIC-INORGANIC COPOLYMERS FROM OXOHYDROXOORGANOTIN DIMETHACRYLATE AND METHYL-METHACRYLATE

Organic-inorganic polymeric derivatives constituted by methyl methacry late co-units and an oxohydroxobutyltin macrocation difunctionalized w ith methacrylate counterions have been prepared by radical polymerizat ion in solution. The reaction affords soluble products, indicative of a substantial absence of cross-linking originated by the difunctional macrocationic comonomer, when the molar excess of methyl methacrylate is high. The organic-inorganic hybrid products obtained have been char acterized by various techniques, thus allowing us to propose a mechani sm for their formation which implies a role as chain termination agent for the macrocationic monomer.