METHOD OF CLEANING CONTAMINATED POLYMERS Russian patent published in 2019 - IPC C08J11/08 B29B17/02 C08F6/00 

FIELD: treatment.

SUBSTANCE: invention relates to a method of cleaning contaminated polymers using a solvent under pressure and solid media. Method of purifying the regenerated polymer involves obtaining a regenerated polymer and dissolving it in a solvent at high temperature and pressure to obtain a polymer solution which is purified at an elevated temperature and pressure by bringing the polymer solution into contact with the solid medium to obtain a purer polymer solution. Then a cleaner polymer is separated from the cleaner solution of polymer. Regenerated polymer is selected from polymers after household use, polymers after industrial use and combinations thereof. Solvent is selected from a group consisting of C₁-C₆ aliphatic hydrocarbons and mixtures thereof.

EFFECT: obtaining a polymer with improved colour characteristics and reduced odour.

14 cl, 4 dwg, 1 tbl, 3 ex