Preparation of aromatic polyamide with solvent system comprising N-alkyl substituted amide and quaternary ammonium compound

摘要

A process and its product are disclosed whereby poly-p- phenylene terephthalamide is prepared in a polymerization solvent comprising an N- alkyl-substituted amide, preferably N-methyl-2- pyrrolidone, and a quaternary ammonium chloride, preferably methyl-tri-n- butylammonium chloride.