Hydrosilane addition reaction refers to the addition reaction between organosilicon compounds containing hydrogen silicon bonds and compounds containing unsaturated bonds under certain conditions. It is the main form of silicon-carbon bonds and one of the most basic and important reaction types in organosilication. Unsaturated bonds can be carbon-carbon double bonds, carbon-carbon triple bonds, carbon-oxygen double bonds and carbon-nitrogen double bonds. Among them, the addition reaction of hydrogen silicon bond and carbon carbon double bond is the most common hydrogen silicon addition reaction in the silicone industry, and is the core reaction of many additive silicone products.

For hydrosilane addition reaction, in addition to hydrosilane compounds and unsaturated compounds, the catalyst is an indispensable component, which plays a role in speeding up the reaction speed, shortening the reaction time and reducing the reaction temperature. The catalyst of hydrosilane addition reaction is mainly the compounds and complexes of Group B transition metal elements platinum, palladium, nickel and rhodium in the periodic table, among which platinum catalyst has the highest catalytic activity and is the most widely used.

The platinum catalysts used to catalyze the hydrosilane addition reaction are mainly divided into homogeneous catalysts and heterogeneous catalysts. Among them, the homogeneous catalyst and the reactant are in the same phase, and there is no phase interface. In the reaction of hydrosilane addition, the homogeneous catalyst generally refers to the liquid catalyst.

Platinum catalyst, plz check MY KP22