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US 5,139,700 AGranted
Vapor phase corrosion inhibitor material
AssigneeCortec Corporation
InventorsBoris A. Miksic, Michael Tarvin
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AssigneeCortec Corporation
InventorsBoris A. Miksic, Michael Tarvin
Estimating the term…
A vapor phase corrosion inhibitor formulation comprising a finely divided anhydrous molybdate selected from the group consisting of anhydrous sodium molybdate, anhydrous ammonium dimolybdate, and anhydrous amine molybdates having the structural formula: ##STR1## wherein R.sub.1 is an aliphatic hydrocarbon having up to 7 carbon atoms, and wherein R.sub.2 is either hydrogen or an aliphatic hydrocarbon having up to 7 carbon atoms with these anhydrous molybdates being provided in admixtures with sodium nitrite and benzotriazole. The formulations of the present invention have been found to be particularly desirable as a vapor phase corrosion inhibitor when in contact with the environs of metals susceptible to corrosion including, for example, iron, steel, copper, and alloys such as alloys of iron, copper, and the like. In a preferred embodiment, the amine-molybdate compounds are those amine-molybdates derived from dicyclohexylamine, 2-ethylhexylamine, and cyclohexylamine. The resultant amine-molybdates have vapor pressures which contribute to appropriate protection against corrosion, as well as a continued or ongoing availability of that protection, and when provided in admixture with sodium nitrite and benzotriazole, find particular applicability for extrusion with polyolefin films such as polyethylene and polypropylene, and with such films being capable of forming laminates with metallized second film layers.
A vapor phase corrosion inhibitor in combination with an article comprised of a resinous film wherein said inhibitor comprises a mixture having the following formulation:
A vapor phase corrosion inhibitor comprising, in combination:
A vapor phase corrosion inhibitor in combination with an article comprised of a resinous film wherein said inhibitor comprises a substantially anhydrous amine molybkate in powder form and having the structural formula:
A vapor phase corrosion inhibitor package comprising, in combination:
A vapor phase corrosion inhibitor comprising, in combination:
A laminate consisting of first and second film layers bonded to a central metallic layer to form a composite structure and wherein:
Dependencies are inferred from the claim text.