FIELD: chemistry.
SUBSTANCE: composition comprises at least one epoxy group containing nitrile rubber which contains repeating units of one conjugated diene, at least one α,β-unsaturated nitrile and optionally one or more other copolymerizable monomers, but which lacks repeating units of nonconjugated cyclic polyenes; as crosslinking agent at least one Lewis acid; and at least one cross-linking accelerator selected from the group consisting thiurams, ksatogenaty, thiourea, dithiocarbamates and carbamates.
EFFECT: invention produces vulcanizates with favorable performance compression set at room temperature, and at the same time a high tensile stress and elongation at break optimal.
6 cl, 14 tbl, 4 ex
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