RUBBER COMPOSITION, VULCANIZABLE RUBBER COMPOSITION, AND VULCANIZATE

摘要

A rubber composition comprising (A) 100 weight parts of a nitrile group-containing copolymer rubber having an iodine value of not larger than 100 and comprising 10-60% by weight of alpha , beta -ethylenically unsaturated nitrile monomer units, and (B) 3-200 weight parts of an acid-acceptor selected from zeolite compounds, hydrotalcite compounds and aluminum hydroxide gel, and optionally (C) 3-100 weight parts of a metal salt of alpha , beta -ethylenically unsaturated carboxylic acid. A vulcanizable rubber composition comprising this rubber composition and (D) 0.2-10 weight parts of an organic acid vulcanizing agent gives a rubber vulcanizate having good resistance to deteriorated oil.