Name: Evonik Dynasylan PhTA Phenyltriacetoxysilane
Brand: Guangzhou Eric Wei Chemical Co., Ltd.

Features Of Evonik Dynasylan PhTA Phenyltriacetoxysilane

Highly reactive triacetoxysilane structure enabling rapid room-temperature condensation with hydroxyl-bearing surfaces.
Phenyl group imparts enhanced hydrophobicity, thermal stability, and UV resistance to treated substrates.
Excellent compatibility with organic polymers and silicone resins, facilitating uniform dispersion in coating and sealant formulations.
Low volatility and reduced acetic acid release rate compared to conventional trialkoxysilanes, improving handling safety and odor profile.
Acts as an effective adhesion promoter for glass, metals, and mineral fillers in high-performance composites.

Typical Applications Of Evonik Dynasylan PhTA Phenyltriacetoxysilane

Adhesion promotion in silicone-based RTV and HTV elastomers for automotive gasketing and LED encapsulation.
Surface modification of silica and calcium carbonate fillers in thermoset composites and engineering plastics.
Key crosslinker in moisture-curing polyurethane and hybrid polymer sealants for construction and façade applications.
Priming agent for glass, aluminum, and stainless steel substrates prior to bonding or coating in aerospace and electronics assembly.

Chemical Type	Phenyltriacetoxysilane
Product Form	Liquid
Appearance	Colorless to pale yellow clear liquid
Density (20 °C)	1.15–1.18 g/cm³
Refractive Index (20 °C)	1.460–1.470
Viscosity (25 °C)	3–6 mPa·s
Flash Point (PMCC)	≈ 110 °C
Storage Stability	≥ 12 months in sealed original container at <25 °C

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