arbon monomers, wherein the A blocks have a greater concentration of more highly substituted aliphatic double bonds than the B blocks have, S is a vinyl aromatic hydrocarbon block, Y is a coupling agent, z is o or 1, and n is an integer from 1 to 20, and wherein the heterotelechelic polymer contains from 0.2 to 7.0 meq of epoxy per gram of polymer, and (b) a dual curing system wherein one element