Glass fibers and insulation 

Dynasylan® improves glass fiber products  

Specific functional silanes for stronger glass fiber products  

Glass fiber products are often used to reinforce plastics. They are lightweight, solid and improve the mechanical properties of the plastic, which in turn protects the glass fibers – together, this is referred to as a composite. But because the natural, untreated glass surface does not adhere well to polymers, in particular in moist conditions, glass fiber products are modified using various functionalized silanes during manufacturing. This also enhances their mechanical properties and chemical resistance. 

In industry, the construction sector and automobile manufacturing, meanwhile, glass and mineral wool materials are used for insulation and are intended to guarantee the best possible sound and heat protection. Silanes are indispensable here, too: They are used as adhesion promoters to ensure high strength and good resistance to moisture. The high-quality silanes from Evonik’s Dynasylan® portfolio play a key role in the good interplay of the various components and ensure that the end products are stronger, more durable and more thermally stable. They also help reduce the weight and enable lighter and more flexible designs that meet the requirements of today’s markets. 

The benefits of Dynasylan® at a glance 

Dynasylan® products for glass fibers and insulation are painstakingly developed and tested by Evonik’s experts in order to meet the highest standards and offer customers efficient production processes. Alongside premium products, Evonik also offers long-term partnership. With their many years of experience and their expert knowledge, our committed silane specialists work closely with customers to provide the best possible service. They support customers in optimizing production processes while also ensuring that they always remain abreast of the latest market developments to reinforce customers’ competitiveness. 


  • Glass fibers and glass fabric as lightweight composites for automobile construction, marine craft and aircraft 
  • Glass beads as weight-saving fillers in adhesives, coatings and building structures 
  • Glass beads for cleaning metallic surfaces or for road or airport markings 
  • Mineral or glass wool as an insulation material in industry, construction and automobile construction 



  • Promotion of adhesion between glass fibers and organic resins 
  • Transmission of the glass fiber strength to the polymer 
  • Optimum choice of functional silanes for each plastic, polymer or resin 
  • Improved mechanical properties 
  • Improved chemical resistance 
  • Lower sensitivity to moisture 
  • Higher performance and longer lifespan of the end product 
  • Low weight 
  • Good heat and sound protection