| abstract |
The present invention provides a rubber composition that provides a crosslinked nitrile copolymer rubber having low gasoline permeability and excellent sour gasoline resistance and cold resistance, and a latex composition that provides the rubber composition. An α, β-ethylenically unsaturated nitrile monomer unit of 10 to 65% by weight, a conjugated diene unit of 15 to 89.9% by weight, and a cationic monomer unit and / or a cation can be formed. A latex of nitrile copolymer rubber (A) having a monomer unit of 0.1 to 20% by weight, an inorganic filler (B) having an aspect ratio of 30 to 2,000, and an SP value by the HOY method A nitrile copolymer latex composition containing 0.1 to 200 parts by weight of a plasticizer (C) that is 8 to 10.2, and a nitrile obtained by coagulating such a nitrile copolymer latex composition Copolymer rubber composition. [Selection figure] None |