AbstractHydronopyl acrylate has been synthesized by direct esterification of the alcohol with acrylic acid. Its homopolymer and a variety of copolymers, terpolymers, and a tetrapolymer have been prepared and their properties determined. The terpolymer containing equal weights of the acrylate, butadiene, and acrylonitrile is a good oil‐resistant rubber with a gum tensile strength double that of a 31% acrylonitrile‐69% butadiene copolymer. These properties were obtained at the expense of good low temperature properties. Some evidence has been obtained that hydronopyl acrylate polymerized in the presence of vinyl chloride gives a compatible mixture of polymer which can be milled satisfactor