Applicable Base Polymer Properties
Epoxy adhesives are generally more resistant to a wide variety of liquid environments than other structural adhesives. However, they are generally considered to be very rigid systems, and as such they do not have exceptionally good impact or peel resistance unless modified with tougheners such as CTBN.
VPS 4721 is an epoxy functional silane resin from Evonik. The adhesion promoter improves the adhesion of 1K/2K epoxy. In addition, the adhesion promoter leads to improved strength, reduced VOC formation, advantages in labeling, improved hydrophobicity of the cured formulations and increased storage stability in water borne formulations.