Patent ID: 6020443
Filing Date: 2000-02-01
Classification: C08G

Abstract:
A method for making poly-DCPD comprising:contacting a low grade DCPD starting material that contains between about 81% and about 86% by weight of a DCPD monomer with a catalyst of the formula ##STR7## wherein M is selected is osmium or ruthenium;R and R.sup.1 are independently selected from the group consisting of hydrogen, unsubstituted substituent group and a substituted substituent group wherein the substituent group is selected from the group consisting of C.sub.2 -C.sub.20 alkenyl, C.sub.2 -C.sub.20 alkynyl, C.sub.1 -C.sub.20 alkyl, aryl, C.sub.1 -C.sub.20 carboxylate, C.sub.1 -C.sub.20 alkoxy, C.sub.2 -C.sub.20 alkenyloxy, C.sub.2 -C.sub.20 alkynyloxy, aryloxy, C.sub.2 -C.sub.20 alkoxycarbonyl, C.sub.1 -C.sub.20 alkylthio, C.sub.1 -C.sub.20 alkylsulfonyl and C.sub.1 -C.sub.20 alkylsulfinyl;X and X.sup.1 are independently selected from any anionic ligand; andL and L.sup.1 are independently selected from any neutral electron donor.