Method for purifying polymer material from polymer waste and purified polymer material

The invention relates to a method for purifying polymer material from polymer waste and the purified polymer material. Wherein the polymer material comprises at least one target polymer, at least one non-target polymer and at least one impurity. The method comprises the steps of: providing the plastic waste in solid form; dissolving the polymer material; optionally carrying out a first liquid-solid separation step; optionally adding at least one additive; precipitating the at least one impurity and the at least one non-target polymer from the solution; optionally adding at least one additive; separating the precipitate; optionally adding at least one additive and separating the at least one additive and the adsorbed remaining impurities; the residual solvent is removed and the purified target polymer material is optionally degassed. The invention also relates to a recovery obtainable by said method. 本发明涉及从聚合物废物中纯化聚合物材料的方法和纯化的聚合物材料。其中，所述聚合物材料包含至少一种目标聚合物、至少一种非目标聚合物和至少一种杂质。所述方法包括以下步骤：提供固体形式的所述塑料废物；溶解所述聚合物材料；任选地进