Alternating ethylene–alkyl acrylate copolymers. II. Polymer properties

Properties such as viscosity correlations and spectral data of alternating ethylene–ethyl acrylate copolymers are described. The proton and 13C‐NMR spectra show that there is a considerable amount of tacticity in these polymers. Although the alternating configuration predominates, there is also some random structure present. Terpolymers were prepared with cure‐site monomers, such as 2‐chloroethyl acrylate. The terpolymers were compounded with carbon black and cured to give vulcanizates with excellent properties. The cured products are resistant to oil, water, heat, and oxidation. They also have good low temperature properties (stiffening temperature −31°C, brittleness temperature −50°C), tensile properties (tensile strength 17.2 MPa, elongation at break 250%) and compression sets (25% at 150°C for 70 hr).