PROCESS FOR THE PREPARATION OF POLYARYLENE SULPHIDES

摘要

Process for the preparation of polyarylene sulphides Preparation of a polyarylene sulphide by polycondensing a substituted p-dihalogenobenzene and optionally a polyhalogeno aromatic compound having at least three halo substituents with an alkali metal sulphide in a polar solvent in the presence of a catalytic amount of a tri-alkali metal phosphate. LeA 19,603 - U S