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Waterproofing with bitumen is a widely used method in many countries.

The VINNEVA® brand comprises a range of polymer-based dispersions for the modification of bitumen emulsions. The dispersions are usually post-added to the bitumen emulsions.

VINNEVA® dispersions are based on WACKER’s vinyl acetate-ethylene (VAE) technology. These VAE dispersions show improved or similar properties to competing polymer technologies used in bitumen modification.

SEM images of dried VAE-modified bitumen emulsion membranes show that a continuous VAE-polymer network has developed.

Tensile adhesion strength test: polymer modification meant that the tensile adhesion strength rose by as much as 60 percent compared to conventional bitumen emulsions.

Adding VINNEVA® to bitumen emulsions can yield one or more of the following benefits:

  • Decreased drying times
  • Reduced residual tack
  • Increased adhesion and wear resistance
  • Higher resistance to hydraulic pressure
  • Fewer antioxidants required

Main Application Areas:

  • Coatings / primers
  • Water barriers