A method for continously extracting water soluble impurities from particulate arylene sulfide polymers in which a slurry of water and polymer containing from about 3 to about 30 percent by weight polymer is raised to a temperature in the range of about 250°F to about 420°F by continuous transfer of slurry in indirect contact with hot heat exchange medium followed by continuous separation of polymer from the water. In a preferred embodiment, the slurry is cooled before separation of polymer from the water and a closed cycle of heat exchange medium is used at least partially to heat and at least partially to cool the slurry during the process.
一种从颗粒状芳基
硫醚聚合物中连续萃取
水溶性杂质的方法,在该方法中,通过将浆料与热的热交换介质间接接触连续输送,将含有约3%至约30%(按重量计)聚合物的
水和聚合物浆料升温至约250°F至约420°F范围内,然后连续将聚合物从
水中分离。在一个优选的实施方案中,淤浆在聚合物与
水分离之前被冷却,在此过程中,热交换介质的封闭循环至少部分用于加热淤浆,至少部分用于冷却淤浆。