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Methacryloxypropyl polysiloxane

Siwin‑M2821 is a linear polydimethylsiloxane macromonomer end‑capped with methacryloxypropyl groups at both terminals. It possesses free‑radical polymerization activity and UV‑curing reactivity. It can be copolymerized with various double‑bond‑containing monomers or oligomers, introducing flexible polysiloxane segments into the polymer backbone. This silicone macromer is widely used to chemically modify acrylic resins, polyolefin resins and UV‑curable coatings. It effectively improves weather resistance, water resistance, film flexibility and oxygen permeability, while lowering internal stress and surface tension of finished materials. Viscosity and double‑bond content can be customized to meet customers’ molecular‑design requirements.
  • Siwin-M2821

  • Siwin

  • Siwin-M2821

  • 58130-03-3

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