Laboratory synthesis of polyether-modified silicone oils
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Let’s discuss the methods for laboratory synthesis of polyether-modified silicone oils. As far as I know, polyether-modified silicone oils are synthesized in laboratories. Depending on their structure, they can be divided into the Si-O-C structure and the SI-C structure; the former belongs to the hydrolyzable type while the latter is non-hydrolyzable. The commonly used raw materials are hydrogenated silicone oils combined with polyethers (ethylene ether, propylene ether). Due to their good wetting properties, low toxicity, low usage amounts, and low surface tension, these materials are very popular in the market. They find applications in various fields such as textile auxiliaries, coatings, and pesticides, offering broad prospects for future use. Therefore, please conduct a discussion on the topic of laboratory synthesis.
The SIC structure is stable and the product quality is good, but the synthesis process conditions are difficult to control in actual production, and the raw material prices are relatively high. Especially the catalyst used. Si-O-C is likely produced via emulsion polymerization; it is unstable but has a low cost. The compound synthesized in this way uses another method; its structure is stable as well, and its performance is not inferior to that of the SIC structure. The key advantage is that the raw materials are inexpensive and the manufacturing process is simple, resulting in a high cost-performance ratio in actual production. However, its application areas are limited to some extent due to impurity issues.
Silicon-containing surfactants generally have better performance than those without silicon. In the past, BYK’s silicon-based additives were often used in coating resins; today, they are utilized in oil extraction aids, where demulsifiers are produced by adding hydrogen to silicone oils and then polymerizing them with EO and PO to create silicon-containing polyether demulsifiers. However, due to cost considerations, other demulsifiers are often used in combination to produce products with acceptable performance. In any case, silicon-containing additives represent high performance and high added value, making them worth pursuing!
Thank you to everyone above for participating in the discussion. I’ve learned a lot. Could anyone provide books or other reference materials on the synthesis of silicone surfactants? I am extremely grateful.