Vapor phase corrosion inhibitor-desiccant material
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United States of America Patent
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Jun 14, 1994
Issued Date -
N/A
app pub date -
Oct 14, 1993
filing date -
Aug 23, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A vapor phase corrosion inhibitor-desiccant composite comprising silica gel granules coated with a vapor phase corrosion inhibitor component. The corrosion inhibitor component is selected from a formulation comprising anhydrous molybdates such as ammonium dimolybdate, sodium molybdate and amine molybdates mixed with benzotriazole and sodium nitrate, or from a formulation comprising amine benzoates, amine nitrates and benzotriazole. The composites can be impregnated into foam, extruded with polyolefin films which can additionally be laminated with metallized second film, or encapsulated in an air-permeable container. The corrosion inhibitor formulations have vapor pressures which provide ongoing corrosion protection for susceptible articles situated favorably with respect to the composite.
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