| 摘要 |
PURPOSE: Provided are an improved polymer composition and a process for producing vulcanizates thereof, more particularly, a rubber composition having improved hot air aging characteristics and a method for improving the scorch safety of a polymer vulcanizate. CONSTITUTION: The polymer composition includes three components. The first component is a polymer selected from the group comprising nitrile polymers and ethylene polymers. The second component is a salt of a strong base and a weak acid, the salt comprising a metal selected from Group I of the Periodic Table of Elements. The third component is a vulcanization system comprising an inorganic peroxide compound and a sulfur containing compound. The polymer compositions may further comprise optional ingredients such as one or more of: a polycarbodiimide and a filler. Vulcanizates produced from the polymer composition have a surprising and unexpected combination of properties.
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