Inventors:
Leon Kutik - Reisterstown MD
Roger J. Lussier - Ellicott City MD
Assignee:
W. R. Grace & Co.-Conn. - New York NY
International Classification:
C04B 902
Abstract:
Zeolites free from heavy metal cations are ion-exchanged with alkaline earth metal cations. The exchanged zeolites provide corrosion resistance to paints for metals, especially ferrous metals, without environmental hazard caused by use of heavy-metal anti-corrosion materials such as lead, chromium, zinc, etc.