Producing high molecular weight poly(arylene sulfide) polymers by adding second polar solvent prior to termination of polymerization

摘要

A process for producing an easily recoverable poly(arylene sulfide) polymer having a melt flow of less than 130 g/10 min., which processes comprises: a) adding a second polar organic compound to a polymerization reaction mixture during polymerization immediately prior to termination of said polymerization, wherein said polymerization reaction mixture is formed by reacting reactants comprising a dihaloaromatic compound, a sulfur source and a first polar organic compound under suitable polymerization conditions, and wherein the molar ratio of second polar organic compound added to first polar organic compound is in the range of 0.05 to 2; and thereafter b) terminating said polymerization; and c) recovering said polymer.