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Adhesives Ingredients
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Adhesives Ingredients
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Dynasylan® SIVO 203

Technical Datasheet | Supplied by Evonik
Dynasylan® SIVO 203 by Evonik is a multifunctional aminosilane compound. Acts as an adhesion promoter. Provides improved product performance and quality. It is soluble in alcohols, aliphatic and aromatic hydrocarbons, but it can undergo reactions with ketones or ester solvents. Exhibits excellent wetting on substrates and it forms weather and moisture resistant bonds to substrates which are typically difficult to adhere. Improves the adhesion to plastics such as PC, PET and AI. Offers improved in elongation and modulus. It is mainly dedicated for use in adhesives & sealants to improve the adhesion of hybrid products (like silylated polyurethanes, MS Polymers), RTV silicones, two part polyurethanes and two part epoxies to inorganic surfaces and some difficult plastic surfaces. Possesses reduced yellowing and reduced staining of transparent end products. In addition, Dynasylan® SIVO 203 can lead to fast sealant curing, high cross linked products and it imparts both additional flexibility as well as hydrophobicity. Listed with EINECS/ELINCS, TSCA and IECSC. It has a shelf life of 9 months.
Dynasylan® SIVO 203
Technical Datasheet | Supplied by Evonik
Product Type
Adhesion Promoters > Organofunctional Silanes
Chemical Composition
Multifunctional aminosilane
Physical Form
Light straw
Product Status
Applications/ Recommended for
  • Adhesives
  • Sealants
  • Polymers > Epoxies (EP)
  • Polymers > Silicones (Si)
  • Polymers > Polyurethanes > Polyols
Bio Based
Labels/Agency Rating

Dynasylan® SIVO 203 Properties


Value & Unit
Test Condition
Test Method
Flash Point
> 60 °C
EN 22719
1.03 g/cm3
(At 20°C)
DIN 51757
5 mPa-s
(At 20°C)
DIN 53015

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