METHOD FOR PRODUCING (CO) POLYMERS AT PHASE TRANSITIONS OF SUPERCRITICAL FLUIDS AND A DEVICE FOR ITS CARRYING OUT

摘要

1. A method of obtaining (co) polymers by continuous interaction of at least one monomer with an initiator, its derivatives or their combinations and, optionally, in the presence of a solvent and / or modifying additive, carried out in one or more reaction zones of a straight-through tubular reactor, while maintaining the reaction conditions in the indicated zones, with continuous distillation of the gas mixture containing predominantly unreacted monomer and the isolation of the (co) polymer, characterized in that first! a) separate supply of at least one current stream of monomer, of at least one current stream of solvent and, optionally, supply of current streams of initiator and / or modifying additive, said streams being fed with supercritical pressure of monomer and / or solvent, then! b) heating said stream of solvent, additionally heating said stream of monomer to at least the supercritical temperature of the monomer and / or solvent to form a supercritical fluid, then! c) combining said streams of monomer, solvent and, optionally, initiator and / or modifier in a jet mixer (5) with a linear velocity providing a pressure below the supercritical pressure of the monomer and / or solvent, during which at least partial transition occurs supercritical fluid into the gas phase, and the period of time during which said combination is carried out is substantially less than 1 second, preferably less than 0.1 second, then! d) in a once-through tubular reactor (6) sharply decrease the linearity