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Atomfair Vinyl terminated diphenylsiloxane, dimethylsiloxane copolymer C18H26O3Si3

Description Vinyl Terminated Diphenylsiloxane, Dimethylsiloxane Copolymer (CAS No. 68951-96-2) is a high-purity silicone copolymer engineered for advanced material science applications. This specialized polymer features a unique combination of vinyl-terminated functionality and diphenylsiloxane-dimethylsiloxane copolymer architecture, offering exceptional thermal stability, flexibility, and chemical resistance. With the molecular formula C18H26O3Si3, it is designed for researchers requiring precise control over silicone-based formulations. The material exhibits low volatility, excellent dielectric properties, and compatibility with crosslinking agents, making it ideal for high-performance elastomers, coatings, and adhesives. Each batch undergoes rigorous QC testing including FTIR, NMR, and GPC to ensure consistent molecular weight distribution and functionality. Supplied…

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Description

Description

Vinyl Terminated Diphenylsiloxane, Dimethylsiloxane Copolymer (CAS No. 68951-96-2) is a high-purity silicone copolymer engineered for advanced material science applications. This specialized polymer features a unique combination of vinyl-terminated functionality and diphenylsiloxane-dimethylsiloxane copolymer architecture, offering exceptional thermal stability, flexibility, and chemical resistance. With the molecular formula C18H26O3Si3, it is designed for researchers requiring precise control over silicone-based formulations. The material exhibits low volatility, excellent dielectric properties, and compatibility with crosslinking agents, making it ideal for high-performance elastomers, coatings, and adhesives. Each batch undergoes rigorous QC testing including FTIR, NMR, and GPC to ensure consistent molecular weight distribution and functionality. Supplied in amber glass bottles under inert atmosphere to prevent premature polymerization.

  • CAS No: 68951-96-2
  • Molecular Formula: C18H26O3Si3
  • Molecular Weight: 374.7
  • Exact Mass: 374.11897429
  • Monoisotopic Mass: 374.11897429
  • IUPAC Name: dimethyl(oxo)silane;ethenyl-hydroxy-dimethylsilane;oxo(diphenyl)silane
  • SMILES: C[Si](=O)C.C[Si](C)(C=C)O.C1=CC=C(C=C1)[Si](=O)C2=CC=CC=C2
  • Synonyms: VINYL TERMINATED DIPHENYLSILOXANE, DIMETHYLSILOXANE COPOLYMER, Dimethyl(oxo)silane;ethenyl-hydroxy-dimethylsilane;oxo(diphenyl)silane, MFCD00240056, CID 16213242

Application

This copolymer is widely used as a reactive intermediate in silicone elastomer formulations where enhanced thermal and mechanical properties are required. It serves as a key component in high-temperature resistant encapsulants for electronics due to its diphenylsiloxane content. The vinyl termination enables facile hydrosilylation crosslinking in platinum-catalyzed systems for medical-grade silicones. Researchers utilize it to modify surface properties in release coatings and pressure-sensitive adhesives. The material finds particular utility in optical applications where its combination of transparency and refractive index adjustment is valuable.

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