ABSTRACT
Oligo- and polyisobutylene with molecular mass of 300–225,000 are synthesized at temperatures from 273 to 173 K. The presence of intensively developed thermally controlling surface is thought obligatory, as well as of powerful mixer, which provides linear rates of the reaction mass motion of 1–10 m/s. A specific feature of fast chemical reactions is significant difficulties in providing isothermal regime of the process conduction under industrial conditions. Usually, in this case, local heating up of the reaction mass in the reaction zone heterogeneous spatial-temporal distributions of temperature, monomer conversion, and concentrations of active centers and the monomer take place. Technologically, the difficult stage in industrial production is polymerization of isobutylene. Therewith it should be taken into account that volumetric reactors of the ideal mixing used operate in a non-optimal uneconomic “flare” regime. Kinetic features of the process in volumetric reactors are such that the temperature in microareas of the reaction zone is always higher than that of the reaction medium.
