PRODUCTION OF POLY(P-BENZAMIDE) COPOLYMER

摘要

PROBLEM TO BE SOLVED: To provide a simple process for producing a poly(p-benzamide) excel lent in mechanical properties, which process comprises copolymerizing a poly(p- benzamide) with another polymer in a reaction field being a homogenous solu tion of a poly(p-benzamide) having a sufficient molecular weight and active reactive groups. ;SOLUTION: This process comprises adding a polymer (C) having carboxyl groups and/or amino-reactive functional-group-containing polymer to a homogeneous transparent poly(p-benzamide)-containing solution obtained by polycondensing p-aminobenzoic acid in a concentration of 0.08-0.15 mol/l in a solution containing an amidic solvent (A), a phosphite compound (B) and lithium chloride and calcium chloride to polymerize the poly(p-benzamide) with polymer (C). Polymer C is desirably a carboxylic polyolefin or a carboxylic polyamide.;COPYRIGHT: (C)1998,JPO