Used as a coupling agent in silicone chemistry to modify surfaces and improve adhesion between organic polymers and inorganic materials. It is particularly effective in promoting bonding in composite materials, sealants, and coatings. The vinyl group enables crosslinking in silicone curing processes, especially in addition-cure systems, while the chloromethyl group can undergo further chemical modifications to introduce functional groups. Commonly applied in the synthesis of specialty silanes for use in adhesives, surface treatments, and as intermediates in the production of silicone resins with tailored properties.