Peroxide curable rubber composition comprising hnbr

Details Peroxide curable rubber composition comprising hnbr Peroxide curable rubber composition comprising hnbr

C - Chemistry, Metallurgy

08

L

C08L 9/02 (2006.01) C08J 3/24 (2006.01) C08J 5/00 (2006.01)

Patent

CA 2487744

A peroxide cured rubber composition comprising a first peroxide curable rubber compound comprising a hydrogenated nitrile-butadiene rubber compound (HNBR); a second peroxide curable rubber compound comprising repeating units derived from at least one isoolefin monomer, more than 3.0 mol% of repeating units derived from at least one multiolefin monomer, and a gel content of less than 5.0 wt%; and, repeating units derived from at least one multiolefin cross- linking agent. In a preferred embodiment, the second peroxide curable rubber comprises a peroxide curable butyl rubber (IIR) with a high isoprene content and a low gel content. The composition is particularly useful in the making of hydrocarbon resistant seals. A method of producing the composition is also disclosed, along with a shaped article made from the composition.

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