Polymerisation of dienes

摘要

Polymerizing of a diene, preferably 1,3-butadiene or isoprene, comprises: (a) reacting the diene with hydrogen peroxide in a hydrophilic organic solvent in the presence of water to form a reaction mixture; (b) contacting reaction mixture with water; (c) separating unreacted gaseous diene from reaction mixture, carrying out condensation, distillation and recycling of unreacted gaseous diene; (d) separating the aqueous phase comprising hydrophilic solvent from the reaction mixture, and recycling hydrophilic solvent in step (a); and (e) distillative cleaning of polymerization product. Polymerizing of a diene, preferably 1,3-butadiene or isoprene, comprises: (a) reacting the diene with hydrogen peroxide in a hydrophilic organic solvent in the presence of water to form a reaction mixture at temperatures of 50-150[deg] C and pressure of 0-50 bar; (b) contacting the reaction mixture with water, where the temperature of water is 20-80[deg] C, preferably 50-65[deg] C; (c) separating unreacted gaseous diene from the reaction mixture contacted with water, which is obtained in the step (b), carrying out condensation, distillation and recycling of the unreacted gaseous diene; (d) separating the aqueous phase comprising the hydrophilic solvent from the reaction mixture, and recycling the hydrophilic solvent in the step (a); and (e) distillative cleaning of the polymerization product. An independent claim is also included for a system for the polymerizing a gaseous diene at room temperature, comprising: a reaction vessel (1) for the polymerization of the diene containing a flash system (2); and a phase separation plant (3) downstream to the flash system, where the flash system is arranged such that reaction mixture from the reaction vessel is discharged into the flash plant. The unreacted, gaseous diene of the flash unit is separated from the reaction mixture and can be transferred in a condensation apparatus (5), then transferred to a distillation apparatus (4) and finally back to the reaction vessel. The water is provided and contacted with the reaction mixture from the reaction vessel to form an aqueous phase comprising the hydrophilic organic solvent. The unreacted gaseous diene separated from reaction mixture system can be transferred from the flash system to the phase separation plant. The aqueous phase comprising the hydrophilic organic solvent is separated from the reaction mixture and is initially transferred into a distillation apparatus, and finally back into the reaction vessel. The aqueous phase comprising the hydrophilic organic solvent is separated from the reaction mixture and is transferred to phase separation plant, such that the product of aqueous phase separated from the reaction mixture is purified by distillation.