FIELD: chemistry.
SUBSTANCE: invention relates to an oxygen-absorbing composition for making packaging for protecting oxygen-sensitive materials. The composition contains (a) at least one polyester polymer; (b) at least one compound of formula E in amount of approximately 0.1-10 wt % and (c) at least one transition metal in positive oxidation state in amount of 10-400 parts per million. Compound E is a structure of formula (I)
or formula (II)
, where Ar denotes aryl or heteroaryl; R1, R2 and R11 denote H, C1-C12alkyl, C1-C6alkoxy, hydroxy, C2-C6alkenyl; R3, R4, R14 and R15 denote H; R5-R10 and R16 and R17 denote H or C1-C3alkyl; R12 and R13 denote H or C1-C6alkoxy; n and p = 0 or from 1 to 5; q = 0 or from 1 to 4. The invention also relates to walls of packaging containing said composition, a method of making such packaging and a method of packing oxygen-sensitive material in such packaging.
EFFECT: invention enables to obtain articles with high oxygen-absorption and low turbidity.
23 cl, 2 tbl, 19 dwg, 5 ex
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Authors
Dates
2010-12-20—Published
2006-02-15—Filed