Composite polymer/desiccant coatings for IC encapsulation
 This invention is directed to composite coating for maintaining low moisture levels at the surface of solid substrates. One embodiment of the invention comprises a coating having a desiccant layer between layers of the same or different elastomeric polymers. Another embodiment comprises a layer of elastomeric polymer covered with a layer of an elastomeric polymer/desiccant mixture. The composite coating may be applied to integrated circuits to prevent corrosion thereof. 
Ford Motor Company
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Philip R. Vlado James E.
Troyk Markovac Anderson