Patent ID: 7666948
Filing Date: 2010-02-23
Classification: C08G,C08L

Abstract:
1. An elastomer composition comprising a mixture of (A) a perfluoroelastomer and (B) at least one elastomer selected from fluorine rubbers and ethylene-propylene based rubbers, in a mixing ratio (A/B) of from 0.5/99.5 to 80/20 in terms of weight ratio wherein the perfluoroelastomer (A) and the elastomer (B) form a sea-island structure in which one of the components (A) and (B) is dispersed as an aggregate having an average particle size of not more than 10 μm in the other component, wherein the perfluoroelastomer is a perfluoroelastomer containing copolymerization units of: a perfluoroolefin, a perfluorovinyl ether selected from the group consisting of a perfluoro(alkylvinyl)ether, a perfluoro(alkoxyvinyl)ether and a mixture thereof; and a curing site monomer.