The PPG Aerospace chromate-free depaint/repaint process includes a new exterior epoxy
"In salt spray and filiform corrosion testing, metal surfaces protected by new Desoprime HS CA 7502 high-solids exterior epoxy
Eldorado Adhesion Promoter (EAP-9) uses Boeing's Boegel technology that PPG has licensed, Schoeder said, enabling PPG to offer airframe manufacturers and third-party painters an easy-to-use, competitively-priced conversion coating.
"EAP-9 is applied to the stripped aluminum airframe and allowed to dry, and then Desoprime HS CA 7502
When EAP-9 is used with Eldorado corrosion remover and brightener EAC-8, resulting metal-corrosion resistance is similar to resistance achieved through processes using chromated chemicals, Schoeder said.