Reactive silicones are a class of specialty silicone materials in which reactive functional groups are introduced into a polysiloxane (Si–O–Si) backbone. Common forms include silane coupling agents (small-molecule cross-linking type), reactive modified silicone oils (medium- to high-molecular-weight additive type), and addition-curing prepolymers containing vinyl or Si–H groups (material-intrinsic type). Unlike conventional inert silicone oils, which rely on incompatibility migration to the surface, reactive silicones are covalently anchored or cross-linked into the system’s network through pathways such as hydrolytic condensation, ring-opening, or radical or platinum-catalyzed addition. This not only provides low surface energy, slip, leveling, a soft hand feel, or interfacial bridging but also significantly reduces the risks of migration, oil bleeding, and recoat adhesion issues. The choice of reactive functional groups (alkoxy/silanol, amino, epoxy, methacryloxy, vinyl/Si–H, etc.) determines compatibility with specific resins, substrates, and curing conditions. In practical applications, it is essential to simultaneously consider byproduct release, catalytic sensitivity, and the impact on yellowing and compatibility. TAIGA Additives offers a wide selection of defoaming additives and provides customization services.

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