Evonik has developed a range of Silanes helping to reach higher performance to adhesives and sealants and brings excellent substrate adhesion, mechanical strength, storage stability, chemical resistance among many other benefits.

Dynasylan® Silanes

The use of Silanes has been a big step forward in the Adhesives and Sealants industry. They have helped to replace sophisticated and expensive process such as screwing, welding or riveting by Adhesives or Sealants.

In addition, thanks to Silanes, Adhesives and Sealants reach high performance even when exposed to moisture or applied to difficult-to-bond surfaces. Organofunctional Dynasylan® Silanes contribute to improve adhesion and increase chemical and temperature resistance among others benefits.

Dynasylan® is a comprehensive range of Silanes that can fulfill Adhesives and Sealants formulators requirements for various end-applications and systems:

Benefits provided by Dynasylan Silanes   Dynasylan end use applications Dynasylan for Various System  

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Dynasylan® 4148 by Evonik is polythylene glycol-functional alkoxysilane. Helps to control rheological properties and to reduce viscosity in highlyfilled polymer systems, like aluminum trihydroxide filled polyesters or SMC pastes.
Dynasylan® MEMO by Evonik is 3-Methacryloxypropyltrimethoxysilane. Provides optimum dispersion of the fillers and pigments, reduction in settling of the fillers and pigments, reduction in viscosity, improved flow properties of the resin and improved mechanical properties of the molded products.
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Case Studies from Organofunctional Silanes

Optimize the Mechanical and Adhesion Performance of 1K Epoxy and Other Reactive Formulations

Evonik offers a novel, epoxyfunctional silane resin as adhesion promoter with excellent benefits for adhesive and sealant formulations. These additives improve the adhesion of 1K/2K epoxy, 1K/2K polyurethane, water borne and rubber systems. In addition, these adhesion promoters lead to improved strength, reduced VOC formation, advantages in labeling, improved hydrophobicity of the cured formulations and increased storage stability in water borne formulations.

The adhesive bond based on VPS 4721 tolerates up to > 20% greater shear force before cohesion failure as compared to the adhesive based on Dynasylan® GLYMO adhesion promoter.


Overcome Adhesion Challenges on Polycarbonate, PMMA and Other Difficult Substrates

Evonik offers a range of novel, multifunctional silane oligomer adhesion promoters with amino functionalities. These additives improve the adhesion of hybrid products such as silylated polyurethanes, MS Polymer, and RTV-silicones. The enhanced adhesion makes the formulated adhesives suitable for the difficult-to-stick substrates. In addition, these adhesion promoters lead to improved adhesive cure, imparting additional flexibility and partially hydrophobicity.


Enhance the Adhesion of Polyurethanes with VPS 7161 – a Special Silane from Evonik

Many PU formulators are facing significant challenges when formulating polyurethane adhesives, especially when it comes to primerless adhesion to critical substrates and metals.

VPS 7161 is a special silane adhesion promoter with a planar structure and a very high crosslinking potential. It shows excellent chemical compatibility to amine-critical, sensitive isocyanates that makes it a tailor-made solution for PU-based adhesives.

Download the case study to learn more and access technical data.


Balance the mechanical properties of SMP and Silicone Adhesives & Sealants. Formulate highly elastic SMP and Silicones Adhesive & Sealants

Highly elastic SMP and silicone adhesives & sealants become more and more important in the market. To fulfil the market requirements and norms, the mechanical properties of SMP and silicone adhesives and sealants must be well-balanced. Especially expansion sealing joints in the construction industry, floor and connection joints and special adhesives like elastic parquet adhesives require extensive adhesion properties and elastic behavior, which can be adjusted using specific organofunctional silanes in the SMP and silicone formulations.

Read the case study to read about Dynasylan’s® comprehensive range of monomeric and oligomeric silanes offering excellent adhesion and cohesion properties.

  • Dynasylan® special amino functional silane oligomers (e. g. Dynasylan® 1146) offer well balanced mechanical properties and excellent adhesion profiles of SMP and silicone adhesives & sealants
  • Dynasylan® secondary amino silanes (e.g. Dynasylan® 1189 and VPS 1489) help to formulate SMP and silicone adhesives & sealants with enhanced elasticities


Formulate environmentally friendly adhesives and sealants with Dynasylan® silanes

Environmentally friendly adhesives and sealants with reduced VOC as well as enhanced labeling become more and more important in the market.

The main challenge is to reduce the VOC content of the final formulation and to have a positive influence on the labeling while securing good adhesion performance Dynasylan® has a comprehensive range of oligomeric silanes offering excellent adhesion properties and significantly reduced VOC (up to 75 % VOC reduction) compared with traditional monomeric silanes.

Moreover, oligomeric silanes often display significant advantages in labeling and can enhance final strength and elasticity as well as other properties of adhesives and sealants.



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