FIELD: chemistry.
SUBSTANCE: invention relates to a polyester polymer composition, preparation method thereof, as well as an article moulded from said composition, such as a film, a sheet and a thin-wall hollow container. The polymer composition contains 2-30 wt % polyamide resin (A) 69.5-97.99 wt % polyester resin (B) and 0.01-0.5 wt % polycarboxylic acid (C). The method of preparing the polymer composition involves preparation of a preliminary composition through mixture in molten state of components (A), (B) and (C) or components (A) and (C) with subsequent mixture of the preliminary composition and the polyester resin (B) in molten state. The moulded article is made by moulding the polymer composition.
EFFECT: composition is weakly-coloured and has excellent gas-barrier properties, transparency and mechanical properties of the finished product.
13 cl, 14 tbl, 34 ex
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