Patent ID: 8717130

Claim:
An adhesive and corrosion-protective lacquer composition for rare earth permanent magnets comprising a solid resin mixture, a setting accelerator, a silane-based epoxy functional adhesion promoter and a solvent or a solvent mixture, wherein the solid resin mixture includes, based upon the weight of the solid resin mixture: a) 1 to 94 wt. % of at least one solid epoxy resin with an epoxide number of at most 2 Eq/kg, b) 1 to 50 wt. % of at least one multifunctional solid epoxy resin with an epoxide number of >4 Eq/kg, and c) 5 to 40 wt. % of a setting agent with a melting point >30° C., which is selected from a phenol novolac, a cresol novolac, or a combination thereof, wherein the lacquer composition further comprises 5 to 20 wt. % with respect to the amount of solid resin in the solid resin mixture, of a highly viscous epoxy resin based on bisphenol-A having an elastomer content of >30 wt. % and wherein the viscosity of the highly viscous epoxy resin based on bisphenol-A is >50,000 mPas at 23° C.