Name: Evonik Dynasylan SIVO 203 Functional Oligosiloxane
Brand: Guangzhou Eric Wei Chemical Co., Ltd.

Features Of Evonik Dynasylan SIVO 203 Functional Oligosiloxane

Reactive oligosiloxane with terminal amino and alkoxysilane functional groups for dual-cure capability.
Enables covalent bonding to both organic polymers and inorganic substrates (e.g., glass, metals, minerals).
Low viscosity liquid at room temperature — easy to handle, blend, and disperse in solvent-based and solvent-free systems.
Enhances interfacial adhesion, mechanical strength, and long-term durability in hybrid composites and coatings.
Hydrolytically stable under neutral conditions; compatible with common industrial resins including epoxies, polyurethanes, and acrylics.

Typical Applications Of Evonik Dynasylan SIVO 203 Functional Oligosiloxane

Adhesion promoters in high-performance automotive sealants and structural adhesives.
Surface modifiers for silica and mineral fillers in rubber and thermoplastic composites.
Hybrid binder component in sol-gel derived protective coatings for metal and concrete substrates.
Functional additive in UV- and moisture-curable hybrid coatings for electronics encapsulation.
Interfacial coupling agent in fiber-reinforced polymer (FRP) laminates and prepregs.

Chemical Type	Amino-functional oligosiloxane with alkoxy end groups
Product Form	Clear, colorless to pale yellow liquid
Appearance	Homogeneous, low-viscosity liquid
Primary Applications	Adhesion promotion, surface modification, hybrid polymer synthesis
Key Features	Bifunctional (amino + alkoxysilane), hydrolytic stability, low volatility
Benefits	Improved filler dispersion, enhanced crosslink density, reduced interfacial stress
Storage Conditions	Store in tightly closed containers at 5–30 °C, protect from moisture
Shelf Life	Minimum 12 months from date of manufacture under recommended storage

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