Vinyltris(methylethylketoximo)silane, CAS No. 2224-33-1, is an important organosilicon compound. Belonging to the silane coupling agent family, its molecular structure contains one vinyl group (–CH=CH₂) and three butanone oxime groups (–N=C(CH₃)C₂H₅O) attached to a silicon atom. This unique structure endows it with dual reactivity: on the one hand, the vinyl group can participate in free radical polymerization or addition reactions; on the other hand, the butanone oxime groups can hydrolyze in the presence of moisture to form silanols (Si–OH), which then form strong chemical bonds with the surface of inorganic materials.

This compound is a colorless to pale yellow transparent liquid at room temperature with a slightly pungent odor. It is slightly soluble in water but readily soluble in most organic solvents such as acetone and toluene. Due to its good stability and controllable hydrolysis rate, vinyltributylone oxime silanes are widely used in sealants, coatings, adhesives, and other fields, especially as crosslinking agents in one-component room temperature vulcanizing (RTV) silicone rubber.

Compared to traditional acetoxy or methoxy silanes, methyl ethyl ketone oxime silanes release methyl ethyl ketone oxime as a byproduct, which has lower toxicity, less odor, and weaker corrosiveness to metals. Therefore, it is more suitable for applications with high environmental and safety requirements. With the promotion of green chemistry concepts, these low-toxicity, low-corrosion silane coupling agents are gradually replacing traditional high-pollution products and becoming an indispensable additive in modern high-performance materials.