Abstract
So as to control catalytic activity of H2PtCl6 toward the hydrosilylation process, polymers bearing various sulfide moieties were employed as an additive of the catalyst and their effect on the activity was evaluated. From the study on the hydrosilylation reaction of trimethylvinylsilane with triethylsilane at various temperatures, they were found to serve as a good retarded of the catalyst where the activity of Pt catalyst was depended upon the polymer structure. The curing reaction of silicone resin was also carried out in the presence of various polymers to observe the same tendency to the model reaction. That is, the combinations of H2PtCl6 and sulfide polymers were found to be an excellent latent catalyst for the hydrplilylation process. The curing temperature of silicone resin was controllable by the character and the concentration of the polymer.
