A solvent-based polyester adhesive system based on aromatic isocyanates with high solid characteristics and high chemical and temperature resistance. It is suitable for a broad range of applications such as electrical insulation laminates (classes B and F), special substrates (classes H), film-to-foil laminates, thermal insulation composites, and metalized-PET films to metal (coil coating). Suitable web materials include polyester films, non-wovens, press papers, polyolefin films, polycarbonate films, and metal foils.