Rubbery polymers can be formed having the general formula: R.sup.1R.sup.2N--(CH.sub.2).sub.n--X--CH.sub.2--CHR.sup.3R.sup.4 wherein R.sup.1 and R.sup.2 are independently selected from a group consisting of alkyls, cycloalkyls, alkenyls, cycloalkenyls, aryls, phenyls, heterocycles, acyls, and silanes, or R.sup.1 in combination with R.sup.2 forms a heterocyclic ring; n is an integer from 1 to 20; X is selected from a group consisting of sulfur, a phosphorus moiety, and a silicon moiety; R.sup.3 and R.sup.4 are one of hydrogen, alkyls, alkenyls, and at least one of which includes reactive unsaturation such as an alkenyl group. Moreover, this invention discloses a process of making functionalized rubbery polymers from the functionalized monomers.