Octyl polytrimethylsiloxane, as a high-performance silicone material, has broad application prospects in cosmetics, lubricants, coatings and medical fields. In recent years, with the advancement of science and technology and the growth of demand, the synthesis process of octyl polytrimethylsiloxane has made significant breakthroughs.
The traditional synthesis process of octyl polytrimethylsiloxane mainly relies on the hydrosilylation reaction, in which hydrogen-containing silicone oil is added to olefins through a specific catalyst to obtain the target product. However, this process has problems such as harsh reaction conditions, high catalyst cost, and difficulty in product separation and purification, which limits its large-scale industrial application.
In order to overcome these difficulties, researchers have conducted a lot of research and exploration. In recent years, a new process for preparing octyl polytrimethylsiloxane based on continuous reaction in a fixed bed microreactor has gradually emerged. The process uses 1,1,1,3,5,5,5-heptamethyltrisiloxane and 1-octene as raw materials and performs continuous reaction in a micro-packed bed reactor filled with solid particle catalysts. After the reaction, the obtained liquid product directly enters the subsequent separation and purification system, thus realizing an efficient and continuous production process.
Compared with the traditional synthesis process, the new process has significant advantages. First, the fixed bed microreactor has excellent heat and mass transfer performance, which makes the reaction conditions milder and greatly improves the utilization rate of the catalyst. Secondly, the use of solid particle catalysts reduces the cost of the catalyst and is easy to separate and recover from the reaction system, realizing the recycling of the catalyst. In addition, the new process also simplifies the separation and purification process of the product and improves the purity and yield of the product.
It is worth mentioning that the new process has not only made breakthroughs in technology, but also shown great advantages in economy. By optimizing the reaction conditions and the use of catalysts, the new process greatly reduces the production cost, making the large-scale industrial application of octyl polytrimethylsiloxane possible.


With the continuous breakthrough and improvement of the synthesis process, the application field of octyl polytrimethylsiloxane will be further expanded. It can be foreseen that in the near future, this high-performance silicone material will play its unique role in more fields and make greater contributions to human life and scientific and technological progress.