FIELD: chemistry.
SUBSTANCE: invention relates to a thermoplastic polyester material suitable for packaging. Polyester composition is prepared by mixing: (a) 90–97 wt% of a thermoplastic polyester selected from polyethylene terephthalate, polyethylene naphthalene and mixtures thereof, (b) 2–6 wt% poly-m-xylidene (MXD6), (c) 1–5,000 ppm cobalt salt, (d) 0.1–1,000 ppm ethylene glycol (EG) and (e) 0.1–1,000 ppm pyromellitic dianhydride (PMDA).
EFFECT: improved gas barrier and mechanical properties of the material.
14 cl, 6 dwg, 1 tbl
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