Patent ID: 7803893

Claim:
A process for preparing crosslinked silicones by hydrosilylation comprising reacting a first compound (A) containing at least two Si—H functionalities with at least a second compound (B) containing at least two hydrosilylatable unsaturated carbon-carbon bonds in the presence of a ruthenium catalyst (D) having at least two ndependent carbon π-bonded ligands, at least one of these ligands being selected from the group consisting of η 6 -bonded arene ligands, η 6 -bonded triene ligands, η 4 -bonded 1,5-cyclooctadiene ligands and η 4 -bonded 1,3,5-cyclooctatriene ligands, wherein at least one of compounds (A) or (B) contain at least three of their respective Si—H or hydrosilylatable unsaturated carbon-carbon bonds, to produce a crosslinked silicone product.