It is not surprising then that few examples of coating compositions can be found that include isobutylene-type monomer-containing copolymers, because the monomers do not tend to copolymerize. [0012] A few examples of acrylic ester or acrylonitrile copolymers made by copolymerizing with monomers such as propylene, isobutylene, and styrene, have been accomplished in the presence of Lewis acids, such