Production of poly(silaisoprene) by laser-induced decomposition of 1-methyl-1-vinyl-1-silacyclobutane

Article abstract of DOI:10.1016/0022-328X(90)85052-Z

Continuous CO2 laser-induced decomposition of 1-methyl-1-vinyl-1-silacyclobutane (MVS) in the presence of energy conveying sulfur hexafluoride provides a highly selective method for production of poly(2-methyl-2-silabuta-1,3-diene)(polysilaisoprene).Trapping with hexafluoroacetone and tetrafluoroethene confirms the intermediacy of 2-methyl-2-silabuta-1,3-diene(silaisoprene), polymerization of which depends on the ratio MVS/SF6.The IR spectrum of the polymer deposited from the gas-phase on to the reactor surface reveals that silaisoprene polymerizes by particiption ofboth double bonds.