Patent ID: 6936672

Claim:
A storage stable reactant formulation for in-mold polymerization consisting essentially of a procatalyst and a monomer wherein said procatalyst is a compound of the formula: [R′ML′ x A′] wherein M represents a Group 10 transition metal; R′ represents hydrogen or an anionic ligand selected from the groups consisting of linear and branched C 1 -C 20 alkyl, C 5 -C 10 cycloalkyl, linear and branched C 2 -C 20 alkenyl, C 6 -C 15 cycloalkenyl, allylic ligands or canonical forms thereof, C 6 -C 30 aryl, C 6 -C 30 heteroatom containing aryl, and C 7 -C 30 aralkyl, each of the foregoing groups can be optionally substituted with hydrocarbyl and/or heteroatom substituents preferably selected from linear or branched C 1 -C 5 alkyl, linear or branched C 1 -C 5 haloalkyl, linear or branched C 2 -C 5 alkenyl and haloalkenyl, halogen, sulfur, oxygen, nitrogen, phosphorus, and phenyl optionally substituted with linear or branched C 1 -C 5 alkyl, linear or branched C 1 -C 5 haloalkyl, and halogen; L′ represents a Group 15 neutral electron donor ligand; A′ is an anionic leaving group; x is 1 or 2; and the monomer comprises a multi-functional polycycloolefin containing at least two polymerizable norbornene-type moieties.