Oxygen absorbent
AssigneeMitsubishi Gas Chemical Company, Inc.
InventorsYoshio Yoshikawa, Takanari Nawata, Akira Amemiya, Toshio Komatsu, Yoshiaki Inoue, Megumu Yuyama
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Abstract
An oxygen absorbent comprising (a) metal halide-coated metal powder having at least one metal halide coated on the surface of at least one metal powder, the amount of metal halide coated being in the range of from about 0.001 part to about 10 parts by weight per 100 parts by weight of the metal powder, and the water content of the metal halide-coated metal powder being less than 1% by weight on the basis of total weight of the metal halide-coated metal powder an (b) a water-containing material and a process for producing the same are disclosed.
Claims23
An oxygen absorbent comprising (a) metal halide-coated metal powder having at least one metal halide coated on the surface of at least one metal powder, the amount of metal halide coated being in the range of from about 0.001 part to about 10 parts by weight per 100 parts by weight of the metal powder, and the water content of the metal halide-coated metal powder being less than 1% by weight on the basis of total weight of the metal halide-coated metal powder, and (b) a water-containing particulate material having a water content of more than 1% by weight obtained by impregnating the particulate material with a water-containing humidity controlling agent.
A process for producing an oxygen absorbent which comprises packing (a) metal halide-coated metal powder having at least one metal halide coated on the surface of at least one metal powder, the amount of metal halide coated being in the range of from about 0.001 part to about 10 parts by weight per 100 parts by weight of the metal powder, and the water content of the metal halide-coated metal powder being less than 1% by weight on the basis of total weight of the metal halide-coated metal powder, and (b) a water-containing material in an air-permeable bag so that the metal halide-coated metal powder does not contact the water-containing material before packing them, said water-containing material being water-containing particulate material having a water content of more than 1% by weight obtained by impregnating the particulate material with a water-containing humidity controlling agent.
Dependencies are inferred from the claim text.