| 摘要 |
Disclosed is a polyamine curable, highly saturated nitrile rubber composition having excellent cold resistance in the presence of a polycyclic aromatic compound; the composition comprising 100 parts by weight of a polyamine curable, highly saturated nitrile rubber having an ±,²-ethylenically unsaturated nitrile monomer unit, a diene-based monomer unit, an ±,²-ethylenically unsaturated dicarboxylic acid monoester monomer unit, and an ±,²-ethylenically unsaturated carboxylic acid ester monomer unit other than the ±,²-ethylenically unsaturated dicarboxylic acid monoester monomer unit, and having an ±,²-ethylenically unsaturated nitrile monomer unit content of 21.0 to 23.0 wt.%, preferably 21.0 to 22.5 wt.%, more preferably 21.0 to 22.0 wt.%, and an iodine value of 120 or less, and 4 to 31 parts by weight of an aliphatic carboxylic acid diester compound of polyalkylene glycol. The polyamine curable, highly saturated nitrile rubber composition is used as a cure molding material of a sealing material that can be suitably used in an environment in which the sealing material is immersed in polycyclic aromatic compound-containing fuel oil. |
