PROCESS FOR PURIFYING REGENERATED POLYMERS

• Main Authors: SCHONEMANN HANS, WILLIAMS KARA, COLLIAS DIMITRIS IOANNIS, LAYMAN JOHN MONCRIEFF
• Format: Patent
• Language: Chinese; English
• Published: 29.12.2020
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; MAKING GRANULES OR PREFORMS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

A method for purifying a reclaimed polymer is disclosed. In one embodiment, the method involves obtaining reclaimed polymer, contacting the reclaimed polymer with a first fluid solvent to produce an extracted reclaimed polymer; then dissolving the extracted reclaimed polymer in a solvent to produce a first solution comprising polymer; settling and filtering the first solution; and separating a purer polymer from the resulting solution. 公开了用于纯化再生聚合物的方法。在一个实施方案中，该方法涉及获得再生聚合物，使所述再生聚合物与第一流体溶剂接触以产生提取的再生聚合物；然后将所述提取的再生聚合物溶解于溶剂中以产生包含聚合物的第一溶液；使所述第一溶液沉降，然后过滤；从所得溶液中分离更纯的聚合物。