PACKING MATERIAL WITH VOLATILE CORROSION INHIBITOR Russian patent published in 2006 - IPC B65D85/00 B65D65/42 

FIELD: packing materials.

SUBSTANCE: invention relates to polymeric films and it can be used to protect ferrous and non-ferrous metals and articles made of said metals from atmosphere corrosion in process of transportation and storage. Proposed packing material in form of polymeric film includes polyolefin with addition of hydrogen absorber, product of company Ciba-SchelfplusO₂ 2400 to increase barrier for penetration of oxygen, high density polyethylene, grade FL5580 produced by Borealis company featuring high barrier properties to penetration of water vapors, and modifier. Six-component complex of volatile corrosion inhibitors in form of superconcetrate of Cesa-Cor 9103 is used as modifier which contains no nitrates, and contact inhibitor cyclohexylamine chromate at the following ratio of components, mass %: six-component complex of volatile corrosion inhibitors in form of superconcentrate Cesa-Cor 9103-0.1-5.0; contact inhibitor - cyclohezylamine chromate 1.0-2.0; oxygen absorber SchelfplusO₂ - 2.0 - 10.0; polyethylene FL 5580 - 10.0 - 40/0; polyolefin - the rest. When using proposed packing material, active inhibitors, evaporating, migrate in to all cavities and irregularities with subsequent condensing on metal surface. If moisture gets onto surface, molecules of inhibitor hydrolyze and protective ions are attracted to surface of metal, thus forming thin protective film. Packing material with volatile corrosion inhibitor can be used in transportation and storage of ferrous and non-ferrous metals and their alloys. Moreover, complex of volatile corrosion inhibitors migrate on protected surface quicker than other similar inhibitors, thus creating high pressure of protective vapors.

EFFECT: improved corrosion protection of metals.

4 cl, 3 ex