PROCESS FOR ISOLATING POLYARYLENE SULPHIDES

摘要

23189-6751 Process for isolating polyarylene sulphides The invention relates to a process for purifying polyarylene ulphides, comprising cooling the reaction solution obtained from the polymerisation reaction for producing polyarylene sulphides to a temperature between 30 and 70.degree.C having a cooling rate of 0.l to 20.degree.C per second, grinding the cooled product, and treating the cooled product with water or an organic solvent. In this process polyarylene sulphides are obtained with a particularly low electrolyte content.