Hydrosilylation method: Under the action of platinum catalysts (such as chloroplatinic acid), the Si-H bond in hydrogenated silicone oil reacts with the carbon-carbon double bond in unsaturated epoxy compounds to introduce epoxy groups to both ends of the silicone oil molecular chain. This reaction is based on the electrophilic addition mechanism between silicon hydrogen and carbon-carbon double bonds. Platinum catalysts can reduce the activation energy of the reaction and promote the reaction.


Condensation reaction method: Siloxane containing hydroxyl or alkoxy groups is used to react with silane coupling agents containing epoxy groups. By removing small molecules (such as water or alcohol), the epoxy groups are connected to both ends of the silicone oil molecular chain. The essence of this reaction is the formation process of silicon oxygen bonds. Under certain conditions, nucleophilic substitution reactions occur between silanols or silanoxy groups to form silicon oxygen bonds.


End-capping method: First synthesize silicone oil containing active end groups, and then use end-capping agents containing epoxy groups to react with these active end groups to introduce epoxy groups to both ends of the silicone oil molecular chain. The key to this method lies in the reactivity and selectivity between the active end groups and the capping agent.