| abstract |
A polymer alloy composed of 5 to 88 wt% of α,β-ethylenically unsaturated nitrile-conjugated diene copolymer rubber (A) having a number-average molecular weight of 50,000 to 150,000, 10 to 60 wt% of an acrylic copolymer (B) including units derived from an α,β-ethylenically unsaturated nitrile monomer, and 2 to 50 wt% of α,β-ethylenically unsaturated nitrile-conjugated diene copolymer rubber (C) having a number-average molecular weight of 1,000 to 20,000. According to the present invention, it is possible to provide a polymer alloy having excellent oil resistance and ozone resistance and, moreover, excellent resistance to cracking caused by solvents. |