CAS No.: 68083-19-2

Its main structural feature is that some methyl groups (Me) in polydimethylsiloxane are replaced by vinyl groups (Vi), forming a reactive polydimethylsiloxane. Vinyl silicone oil exhibits the physical form of a liquid fluid due to its unique chemical structure.

Vinyl silicone oil is mainly divided into two types: end vinyl silicone oil and high vinyl silicone oil. Among them, end vinyl silicone oil mainly includes end vinyl polydimethylsiloxane (Vi PDMS) and end vinyl polydimethylsiloxane (Vi PMVS). Due to its different vinyl content, it has different application characteristics.

The reaction mechanism of vinyl silicone oil is similar to that of dimethyl silicone oil, but due to the vinyl group in its structure, it has higher reaction activity. The main method used in the preparation of vinyl silicone oil is the open-loop equilibrium reaction process. This process uses octamethylcyclotetrasiloxane, tetramethyltetravinylcyclotetrasiloxane, and other raw materials to form chain like structures with different degrees of polymerization through ring opening reactions catalyzed by acid or base.