1,4-Benzenedicarboxylic acid, polymer with 1,4-benzenediamine 25035-37-4 Kevlar 29, monomer-based Kevlar 49, monomer-based Kevlar 49, sru Poly(p-phenylene terephthalamide) Terephthalic acid, polyamide with p-phenylenediamine (8CI) para-Aramid fibrils