Curable perfluoroelastomer composition

摘要

A non-black filled perfluoroelastomer composition comprising a) a perfluoroelastomer having nitrile group cure sites, b) a curative selected from the group consisting of i) a bis(aminophenol) and ii) a compound that decomposes at curing temperatures to generate ammonia and c) 1-25 phr hydrophobic silica filler. Cured compositions have surprisingly better compression set than do similar compounds containing hydrophilic silica.