Suitable comonomers include, for example and without any limitation, alkylene hydrocarbons such as ethylene, propylene butylene, and octene; aromatic hydrocarbon vinyl compounds such as styrene and alpha-methyl styrene; vinyl ester monomers such as vinyl acetate; (meth)acrylic monomers such as methyl(meth)acrylate, ethyl(meth)acrylate, propyl(meth)acrylate, n-butyl(meth)acrylate, t-butyl(meth)acry