Composite polymer/desiccant coatings for IC encapsulation

Chemistry: electrical current producing apparatus – product – and – Having specified venting – feeding or circulation structure – Having means to control electrolyte level when liquid is...

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428209, 428413, 4284233, 4284255, 428446, 428447, 428448, 428450, 428901, 428913, 361397, 174 522, B32B 104

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active

049770098

ABSTRACT:
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.

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