Name: Evonik Dynasylan PhOS Phenyltributanoneoximesilane
Brand: Guangzhou Eric Wei Chemical Co., Ltd.

Features Of Evonik Dynasylan PhOS Phenyltributanoneoximesilane

Highly reactive phenyl-functional silane with oxime-based leaving groups for rapid, low-odor condensation curing.
Excellent hydrolytic stability compared to alkoxy-silanes, enabling extended shelf life and simplified handling.
Enhances adhesion between organic polymers (e.g., silicones, polyurethanes) and inorganic substrates such as glass, metals, and fillers.
Low volatility and reduced VOC profile, supporting safer industrial processing and regulatory compliance (e.g., REACH).
Enables one-component moisture-curing formulations without the need for external catalysts or tin compounds.

Typical Applications Of Evonik Dynasylan PhOS Phenyltributanoneoximesilane

Adhesion promoters in silicone sealants and RTV elastomers for construction and automotive glazing.
Surface modifiers for silica and calcium carbonate fillers in high-performance rubber and thermoplastic composites.
Coupling agent in hybrid sol-gel coatings for corrosion protection on aluminum and steel substrates.
Functional additive in moisture-curable polyurethane adhesives for flexible packaging laminates.
Stabilizer and crosslinker in specialty silicone resins for LED encapsulation and electrical insulation.

Chemical Type	Phenyl-substituted trialkoxyoximesilane
Product Form	Liquid
Appearance	Clear, colorless to pale yellow liquid
Density (20 °C)	Approx. 1.03–1.05 g/cm³
Refractive Index (20 °C)	1.490–1.495
Solubility	Miscible with common organic solvents (e.g., acetone, MEK, toluene); hydrolyzes in water
Storage Stability	≥12 months in sealed container at 5–25 °C under dry conditions
Primary Applications	Adhesion promotion, filler surface modification, moisture-curing systems

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