Patent ID: 8187993

Claim:
A method for stabilizing a catalytic composition, the method comprising: the in-process addition of a hygroscopic catalyst precursor to the catalytic composition in an amount effective to control the catalytic activity of the catalytic composition, wherein the catalyst precursor is at least partially encapsulated within a hydrophobic material prior to the addition of the catalyst precursor to the catalytic composition, wherein the hygroscopic catalyst precursor is selected from the group consisting of compounds of formulas A, B, C, and D: wherein X is halide, each of R, R1, and R2=H, methyl, ethyl, propyl, butyl, pentyl or hexyl, wherein R1 and R2 may or may not be the same; and each of R3, R4, R5, and R6=methyl, ethyl, propyl, butyl, pentyl or hexyl, wherein R3, R4, R5, and R6 may or may not be the same, and wherein the hydrophobic material is selected from the group consisting of a wax, an oil, a resin, and a polymer.