Phenylmethyldichlorosilane is primarily used as a key intermediate in the synthesis of silicone polymers and resins. It plays a crucial role in the production of phenyl-modified silicones, which are valued for their enhanced thermal stability, flexibility, and resistance to oxidation. These properties make them suitable for high-performance applications such as coatings, adhesives, and sealants in industries like automotive, aerospace, and electronics. Additionally, it is utilized in the preparation of silane coupling agents, which improve the adhesion between organic and inorganic materials, particularly in composite materials and surface treatments. Its reactivity with hydroxyl groups also makes it useful in surface modification processes for glass, metals, and ceramics, enhancing their durability and performance in various industrial applications.