Patent ID: 6867274

Claim:
A method for synthesizing a polymer of the formula comprising contacting a cycloalkene with a initiator of the formula in the presence of a chain transfer agent of the formula Z—Y═Y—Z wherein: n is an integer; —Y═Y— is an alkenyl group; Z is a crosslinkable group; M is ruthenium or osmium; X and X 1 are independently any anionic ligand; L and L 1 are any neutral electron donor ligand; and R and R 1 are each hydrogen or a substituent group selected from the group consisting of C 1 -C 20 alkyl, C 2 -C 20 alkenyl, C 2 -C 20 alkynyl, aryl, C 1 -C 20 carboxylate, C 1 -C 20 alkoxy, C 2 -C 20 alkenyloxy, C 2 -C 20 alkynyloxy, aryloxy, C 2 -C 20 alkoxycarbonyl, C 1 -C 20 alkylthio, C 1 -C 20 alkylsulfonyl and C 1 -C 20 alkylsulfinyl, the substituent group optionally substituted with one or more moieties selected from the group consisting of C 1 -C 5 alkyl, C 1 -C 5 alkoxy, aryl and a functional group wherein the functional group is selected from the group consisting of hydroxyl, thiol, thioether, ketone, aldehyde, ester, ether, amine, imine, amide, nitro, carboxylic acid, disulfide, carbonate, isocyanate, carbodiimide, carboalkoxy, carbamate, and halogen wherein: —Y═Y— is a C 2 -C 20 alkene and Z is selected from a group consisting of methacrylate, acylate, cinnamate, epoxide, lactone, cyclic carbonate, tetrahydrofuran, oxetane, lactam, phosphazene, and alkoxysilane.