Carbocationic polymerizations in supercritical co2

摘要

A process is disclosed for carbocationically polymerizing monomers having one or more carbon-carbon double bonds in a medium primarily of carbon dioxide at or above 31.1 DEG C. and at or above 73 bars pressure. The supercritical carbon dioxide can replace traditional solvents for carbocationic polymerizations. While traditional solvents like methylene chloride do not function to allow polymers to form above cryogenic temperatures, it has been found that polymers can be formed at higher temperatures in this supercritical medium.