Method for extracting polymer from waste

• Main Authors: ALBRECHT ANDREAS, OUNE TAYFUN, NAG ARUP
• Format: Patent
• Language: Chinese; English
• Published: 28.11.2023
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

The invention relates to a method for extracting a polymer, preferably a polyolefin, from a polymer-containing waste material, comprising the steps of: providing a polymer-containing waste material comprising a polyolefin material; contacting the polymer-containing waste with a non-polar solvent (S) comprising at least one hydrocarbon having from 4 to 10 carbon atoms, optionally a halogenated hydrocarbon, to form a composition (C); heating the composition (C) at a dissolution temperature (T) in the range of 135 DEG C to 200 DEG C and a pressure (P) in the range of 0.1 MPa to 5 MPa for a time (M) of 5 minutes to 5 hours to obtain a solution comprising the solvent (S), the polyolefin material dissolved in the solvent (S) and the undissolved material (U); separating undissolved material (U) from the solution; the polyolefin material is separated from the solution, and optionally the solvent (S) is separated from the solution. 本发明涉及一种从含聚合物的废料中提取聚合物、优选聚烯烃的方法，包括以下步骤：提供包含聚烯烃材料的含聚合物废料；使含聚合物的废料与包含至少一种具有4至10个碳原子的烃、任选卤代