PROCESS FOR THE PRODUCTION OF POLYARENEAZOLE POLYMER

摘要

The present invention concerns a process for making a polyareneazole polymer, comprising the steps of : a) contacting azole-forming monomers, preferably 2, 3, 5, 6-tetraaminopyridine and 2, 5-dihydro?yterephthalic acid metal powder, and optionally P205, in polyphosphoric acid to form a mixture; b) blending the mixture at a temperature of from 500C to 110 OC; c) further blending the mixture at a temperature of up to 145 OC to form a solution comprising an oligomer; d) optionally, degassing the solution; and e) reacting the oligomer solution at a temperature of 160 OC to 250 OC for a time sufficient to form a polymer.