AROMATIC-BASE COPOLYAMIDE FORMED ARTICLE Russian patent published in 2001 - IPC

FIELD: technology of polymers. SUBSTANCE: invention relates to producing the formed articles, complex threads based on aromatic copolyamide with heterocycles in chain. Complex thread is produced from aromatic copolyamide synthesized by interaction of terephthalic acid dichloroanhydride with 5(6)-amino-(2-p-aminophenyl)-benzimidazoleand4,4¹-diamino-3,3¹-dichlorodiphenylmethane of structural formula (1) [-NH-Ar₁-NHCO-Ar₂-CO-]_n[-NH-Ar₃-NHCO-Ar₂-CO-]_m where values m, n and radicals are given in the invention claim or synthesized by interaction of indicated components with para-phenylenediamine of structural formula (2) where values m, n and radicals are given in the invention claim. Formed article is complex thread exhibits rupture elongation at least 3.4%, equilibrium moisture content 2.0-3.4% at environment humidity 65%, resistance to chemical and climatic ageing and resistance to flexing at least 7700 cycles of double flexures at strength value 12 kgf/мм². Invention can be used in industry of composition materials, in rubber-technical articles and articles of special assignment. EFFECT: high physical-mechanical and explorational properties of material. 3 cl, 3 tbl