Patent ID: 6281326
Filing Date: 2001-08-28
Classification: C08G,C08J,Y02W

Abstract:
A process for preparing a first essentially linear high molecular weight poly(arylene sulfide) polymer which comprises:contacting a polymerization mixture comprising:at least one dihaloaromatic compound,a sulfur source,at least one molecular weight modifying agent,and a first polar organic compound,with a waste material comprising:(a) a second poly(arylene sulfide) polymer;(b) cyclic oligomers of the formula ##STR5##n, where 4.ltoreq.n.ltoreq.15;(c) linear oligomers of the formula ##STR6##where 1.ltoreq.p.ltoreq.50, and X and Y are independently selected from the group consisting of a hydrogen atom, a halogen atom, a phenoxy group, a hydroxy group and the salts thereof, a cyclic amide, substituted and unsubstituted amines of the formula, ##STR7##where R.sub.1 and R.sub.2 are selected from the group consisting of a hydrogen atom, an alkyl group having from 1 to 10 carbon atoms, a carboxylic acid having from 1 to 10 carbon atoms and a carboxylate having from 1 to 10 carbon atoms;(d) and at least one component selected from the group consisting of an alkali metal carboxylate, an alkali metal halide, water, and a second polar organic compound,under polymerization conditions to give said first essentially linear high molecular weight poly(arylene sulfide) polymer at an increased yield without increasing low molecular weight polymer.