Di-n-butyl dichlorosilane is primarily used in the synthesis of silicone polymers and resins. It serves as a key intermediate in the production of various silicone-based materials, which are widely utilized in industries such as coatings, adhesives, and sealants. The compound is also employed in the modification of surfaces to impart water repellency or improve adhesion properties. Additionally, it finds applications in the manufacture of specialty chemicals, including silane coupling agents, which enhance the bonding between organic and inorganic materials. Its role in creating tailored silicone structures makes it valuable in advanced material science and industrial chemistry.