Patent ID: 6903171

Claim:
An article, comprising: an optical layer comprising an optical polymer containing polycyclic repeating units, said optical polymer obtained by polymerizing at least one polycycloolefin monomer in the presence of a high activity Group 10 transition metal catalyst complex of the formula: [(R′) z M(L′) x (L″) y ] b [WCA] d to obtain a polymer product that contains 100 ppm or less of residual Group 10 transition metal prior to purification, wherein [(R′) z M(L′) x (L″) y ] is a cation complex where M represents a Group 10 transition metal; R′ represents an anionic hydrocarbyl containing ligand; L′ represents a Group 15 neutral electron donor ligand; L″ represents a labile neutral electron donor ligand; x is 1 or 2; and y is 0, 1, 2, or 3; and z is 0 or 1, wherein the sum of x, y, and z is 3 or 4; [WCA] represents a weakly coordinating counteranion complex; and b and d are numbers representing the number of times the cation complex and weakly coordinating counteranion complex are taken to balance the electronic charge on the overall catalyst complex.