FIELD: chemistry.
SUBSTANCE: invention relates to a cross-linkable nitrile rubber composition which enables to obtain cross-linked rubber with excellent properties for producing various rubber articles. Composition of cross-linked nitrile rubber includes nitrile rubber (a) containing 0.1 wt. % to 15 wt. % α,β-ethylenically unsaturated nitrile monomer links, from 1 wt. % to 10 wt. % of mono-monomer units of mono-esters α,β-ethylenically unsaturated dicarboxylic acids, from 40 wt. % to 75 wt. % monomer units of esters α,β-ethylenically unsaturated monocarboxylic acids and from 20 wt. % to 58.9 wt. % of diene monomer links and / or α-olefin monomer links, and a polyamine-based crosslinking agent (b), where the relative content of the cross-linking agent based on polyamine (b) with respect to 100 parts by weight of nitrile rubber (a) ranges from 0.1 to 20 parts by weight.
EFFECT: invention enables to obtain cross-linked rubber with excellent mechanical properties, such as tensile strength and elongation at stretching, resistance to residual compression, as well as high heat resistance, resistance to heat aging, frost resistance, resistance to residual compression.
8 cl, 2 tbl, 13 ex
