Vinyltrimethoxysilane (CAS No. 2768-02-7) is a highly reactive vinyl-functional silane coupling agent used to create durable chemical bridges between inorganic substrates and organic polymer matrices. The vinyl group readily participates in free-radical polymerization, peroxide curing, and grafting reactions with polymers such as polyethylene, EVA, EPDM, silicone rubber, and unsaturated resins, while the trimethoxysilane groups rapidly hydrolyze and condense with hydroxylated surfaces including glass, silica, metal oxides, ceramics, and mineral fillers to form robust Si–O–Si / Si–O–M bonds.

Due to its fast hydrolysis rate and high reactivity, Vinyltrimethoxysilane delivers efficient coupling and crosslinking at low dosage levels, resulting in enhanced adhesion, improved mechanical properties, superior moisture resistance, and long-term durability. It is extensively used in wire & cable insulation (moisture-curing and peroxide systems), rubber and plastics compounding, coatings, sealants, and composite materials where strong bonding and processing efficiency are required.