Name: Evonik Dynasylan VTA Vinyltriacetoxysilane
Brand: Guangzhou Eric Wei Chemical Co., Ltd.

Features Of Evonik Dynasylan VTA Vinyltriacetoxysilane

Highly reactive vinyl-functional silane enabling strong covalent bonding between organic polymers and inorganic substrates.
Triacetoxysilane structure provides excellent hydrolytic stability in anhydrous formulations and rapid crosslinking upon moisture exposure.
Improves mechanical properties—including tensile strength, elongation at break, and impact resistance—in filled polymer systems.
Enhances dispersion and interfacial adhesion of mineral fillers (e.g., silica, calcium carbonate, talc) in unsaturated polyester, vinyl ester, and acrylic resins.
Low volatility and favorable handling characteristics compared to chlorosilane alternatives, supporting safer industrial processing.

Typical Applications Of Evonik Dynasylan VTA Vinyltriacetoxysilane

Surface treatment of glass fibers for reinforced thermoset composites (e.g., wind turbine blades, automotive parts).
Adhesion promoter in silicone sealants and RTV (room-temperature vulcanizing) elastomers.
Filler coupling agent in PVC plastisols and acrylate-based coatings for improved weatherability and gloss retention.
Moisture-curable crosslinker in hybrid sol-gel coatings and functionalized colloidal silica dispersions.
Reactive modifier in radiation-curable acrylate formulations to enhance substrate adhesion on metals and ceramics.

Chemical Type	Vinyltriacetoxysilane
Molecular Formula	C₈H₁₄O₆Si
Product Form	Clear, colorless to pale yellow liquid
Appearance	Homogeneous liquid, free from visible particles or sediment
Density (20 °C)	1.07–1.09 g/cm³
Refractive Index (20 °C)	1.415–1.425
Flash Point (PMCC)	≈ 105 °C
Storage Stability	≥ 12 months in original sealed container at 5–30 °C

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