Abstract

Ethylene–acrylic elastomers are copolymers of ethylene, methyl acrylate, and a cure site monomer. They have been commercially available for over 25 years under the trade name Vamac. A family of dipolymers is now available which does not contain the cure site monomer and is cured with peroxides. Cured compounds made from Ethylene–acrylic elastomers have an excellent combination of good heat resistance, good fluid resistance in engine oils and automatic transmission fluids, and good low temperature properties. These compounds perform well in automotive applications such as hoses, gaskets, torsional dampers, and various other parts.