US Patent 7714073 Ethylene copolymers and blend compositions

The invention provides blends comprising an ethylene copolymer formed from ethylene with at least one comonomer selected from (a) the group comprising compounds represented by the formula H2C═CHR wherein R represents a C1-C20 linear, branched or cyclic alkyl group or a C6-C20 aryl group, and (b) a C4-C20 linear, branched or cyclic diene. Each copolymer has a specific density, a specific molecular weight distribution, and a specific comonomer content distribution characteristic.