Patent ID: 7683148

Claim:
A composition capable of undergoing a metathesis reaction upon mixing its components, the components comprising: an olefin-containing substrate capable of undergoing a metathesis reaction; a carbene complex catalyst capable of initiating the metathesis reaction in the composition, wherein the catalyst has the structure: wherein: M is ruthenium or osmium, X is an alkylidene ligand with basicity higher than that of tricyclohexylphosphine (PCy 3 ), Z is oxygen (O) or sulfur (S) X 2 and X 3 are either the same or different and are any anionic ligand, and R 4 , R 5 , a, b, c, and d are the same or different and are each a linear, branched, cyclic or polycyclic organic residue optionally containing siloxane groups (Si—O—Si) and optionally containing heteroatoms selected from the group consisting of B, N, O, Si, P, and S; and at least one reaction control agent for slowing the progress of the metathesis reaction after mixing the composition components and having the structure: wherein: G is selected from the group consisting of: L 3 , L is a hydrocarbon fragment containing a double or triple bond, L 1 -L 9 are each independently selected from the group consisting of L, alkyl, aryl, aralkyl or haloalkyl, A is a Group 14 atom, n=0-20, and m=0-20.