| abstract |
Provided herein are multimodal elastomeric compositions comprising a first polymer portion and a second polymer portion, and methods of making such compositions. The elastomeric composition is preferably an ethylene, a-olefin copolymer or an ethylene, a-olefin, multiolefin terpolymer. The elastomeric composition has a high Mooney viscosity, thereby providing improved elastomeric properties in compounds and other articles formed from the elastomeric composition. Surprisingly, the high Mooney viscosity compositions exhibited viscosities much lower than expected when formulated into elastomeric compounds. Accordingly, disclosed herein are the minimization of the processing damage typically associated with high Mooney viscosity elastomers through the use of the elastomeric compositions, and methods of making them. |