Polyvinylorganosilanes

Polyvinyltriorganosilanes (PVTOSs) are polyorganosilicon compounds representing quite a variety of carbon‐chain organosilicon polymers that can be used as membrane materials for gas separation. PVTOSs are obtained by polymerization of vinyltriorganosilanes, which are trivial alkenylsilanes with terminal double bonds. A detailed investigation of physico‐chemical properties of polymer materials of vinyltriorganosilanes had been conducted at A.V. Topchiev Institute of Petrochemical Synthesis (TIPS). Methods of synthesis of vinyltriorganosilane and vinylgermane monomers alongside their anionic polymerization in the presence of organolithium initiator had been studied. In particular, the effect of type of organolithium initiator, kinetics, mechanism, and some parameters of such anionic polymerization were subjects of investigations. For syntheses of vinyltriorganosilanes with three identical or different substituents at the silicon atom it is possible to use two reactions of nucleophilic substitution of one or several chlorine atoms by alkyl, arylalkyl, or alkenyl groups.