Development of Water-Reducible Polyurethane Coating for Military Applications

Report No. ARL-TR-1950
Authors: Escarsega, John A.; Crawford, Dawn M.; Duncan, Jeffrey L.; Chesonis, Kestutis G.
Date/Pages: May 1999; 33 pages
Abstract: The U.S. Army Research Laboratory's Coating Research Team has developed a water-reducible (WR) chemical agent resistant coating (CARC) utilizing hydroxy-functional polyurethane dispersions and water-dispersible polyisocyanates. This coating has met the Army requirement for chemical agent resistance, while having a volatile organic compound (VOC) content of less than 220 g/l, and it provides improved weather durability, flexibility, and mar resistance. It has undergone field application testing at Letterkenny Army Depot and at Fort Sill. A military specification is being developed, and U.S. Patent #5,691,410 has been awarded. Since CARC is used on a wide variety of Department of Defense (DoD) equipment, users include painting installations across DoD (such as Army Depots, Marine Corps Logistics Bases, and Air Force Logistics Centers) and original equipment manufacturers. Application of the WR CARC at these sites can reduce VOC emissions by millions of pounds per year and, combined with the improved performance properties, will potentially avert costly expenditures for pollution abatement equipment while sustaining all Army mission requirements.
Distribution: Approved for public release
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Last Update / Reviewed: May 1, 1999