Maryland's Defense Patent Database

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Corrosion inhibiting self-expanding foam

Patent image
CCDC ARL

A corrosion prevention and control composition and method comprises combining primarily two-component polyurethane foam formed by reacting polyols with an isocyanate compound, and a 2 to 10 percent by weight of either an organic or inorganic gas-phase corrosion inhibitor. The closed cell foam provides a barrier protection for the underlying corrodible surface, while the inhibitor protects the metal from the absorbed moisture vapor, thereby preventing corrosion from occurring at the foam/metal interface. The resulting foam and inhibitor composition maintains better adhesion to the underlying corrodible structure in corrosive environments.

Inventors: 
Kelley II V, John
Patent Number: 
Technical domain: 
Materials and Coatings
FIle Date: 
2012-11-05
Grant Date: 
2014-12-30
Grant time: 
785 days
Grant time percentile rank: 
14
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY