FIELD: chemistry.
SUBSTANCE: invention relates to chemical industry, specifically to extraction of polyolefins from solutions in organic solvents and can be used to process polymer wastes. Described is a method of extracting components from solutions of polyolefins in organic solvents, involving cooling the solution, separating the polymer at excess pressure of 15-45 mm Hg and condensation of the solvent vapour at temperature 0-5°C, in which the solution of the polymer with concentration of 20-50% is continuously extruded through a draw plate with a circular cross section at a rate of 0.001-0.05 m/s while simultaneously cooling to temperature lower than the melting point of the polymer in the presence of the initial organic solvent.
EFFECT: possibility of carrying out a continuous process with fewer process steps due to exclusion of processes for drying the product and decantation of liquids and creating a cheaper process through exclusion of steps for heating the suspension and drying the product, which require extra equipment and power consumption.
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