METHOD FOR PURIFYING CONTAMINATED POLYMERS

• Main Authors: SCHONEMANN HANS, WILLIAMS KARA, LAYMAN JOHN MONCRIEF, GUNNERSON MAGGIE
• Format: Patent
• Language: Chinese; English
• Published: 16.03.2018
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

A method for purifying a reclaimed polymer, such as a polymer reclaimed from post-consumer use or post-industrial use, is disclosed. The method involves obtaining the reclaimed polymer and contactingit at an elevated temperature and pressure with a fluid solvent to produce an extracted reclaimed polymer. The extracted reclaimed polymer is dissolved in a solvent at an elevated temperature and pressure to produce a polymer solution. A polymer is then separated from the polymer solution. 本发明公开了种用于纯化再生聚合物诸如从消费后使用或工业后使用中再生的聚合物的方法。该方法涉及获得再生聚合物并使其在升高的温度和压力下与流体溶剂接触以产生提取的再生聚合物。将提取的再生聚合物在升高的温度和压力下溶解在溶剂中以产生聚合物溶液。然后将聚合物与聚合物溶液分离。