FIELD: chemistry.
SUBSTANCE: invention relates to polyester compositions containing oxygen-absorbing polydienes and used in packing food products and drinks. The invention describes a composition which contains a combination or a reaction product (i) resins based on aromatic polyester and (ii) hydrogenated polydiene with terminal hydroxyl groups, where 30-70 mol % monomer links of said polydiene are vinyl links or their hydrogenated residues, and in which 60-80% of initial double bonds remain after hydrogenation. Described also is a method of preparing the composition, involving anionic polymerisation of conjugated diene monomer to form polydiene with terminal hydroxyl groups and mixing the aromatic polyester to obtain polydiene.
EFFECT: good oxygen-absorbing properties and prevention of colouring of polyester compositions during secondary processing.
21 cl, 2 ex
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