BYK C 8001 is a polymeric coupling agent that increases the mechanical strength of epoxy resin systems. BYK C 8001 was specially developed for use in glass fiber-reinforced epoxy resin systems. The additive results in improved mechanical properties of the component through increased fiber-matrix bonding. BYK C 8001 provides benefits like enhanced durability, impact and tensile strength when used in glass fiber reinforced epoxy resin formulations commonly used in construction applications.