FIELD: chemistry.
SUBSTANCE: composition contains 45-95 wt % semi-aromatic copolyamide and 5-55 wt % of at least one cross-linked polyolefin. The semi-aromatic polyamide contains at least two different links having the general formula: A/X.T, where A is selected from a link obtained from amino acid, a link obtained from lactam and a link having the formula (diamine in Ca) (diacid in Cb), and X.T denotes a link obtained by polycondensation of diamine in Cx and terephthalic acid, where x is the number of carbon atoms of the diamine in Cx. Said copolyamide has polydispersity Ip, measured by gel-penetrating chromatography, of less than or equal to 3.5 and content of terminal amine groups of the chain between 0.020 and 0.058 meq/g.
EFFECT: invention enables to obtain a composition which is easy to produce and process, while preserving high temperature resistance.
25 cl, 5 tbl, 3 ex
