Polyethylene terephthalate composition

FIELD: chemistry. SUBSTANCE: invention relates to polyethylene terephthalate composite materials based on polyethylene terephthalate intended for manufacture of single-layer containers in form of bottles and containers for various purposes, with improved barrier properties. Invention is implemented by modifying a polyethylene terephthalate masterbatch, which in turn contains polybutylene terephthalate and aerosil. EFFECT: composite material has improved values in terms of permeability of O 2 and water vapour permeability. 1 cl, 3 tbl