| 摘要 |
An oxygen scavenger composition consisting essentially of [I] as essential components, (a) an alkali metal sulfide, and (b) at least one oxidation promoter selected from the group consisting of silica, alumina, silica-alumina, silica-magnesia and inorganic materials containing one of them as a main ingredient; and [II] as optional components, (c) at least one oxidation promoter aid, (d) a water-insoluble or sparingly water-soluble, inert filler, and/or (e) water in a hydrous or hydrated condition, a heat-generating composition of said composition being capable of scavenging at least 5 ml of oxygen per gram of the composition in air at 20 DEG C. during the period of one hour after oxidation reaction has substantially begun and a heat-generating structure comprising said composition and a film having an oxygen permeability of 0.01 to 50 cc/cm2xmin.xO2 partial pressure (1 atm.), said film covering the composition over an area of 0.2 to 10 cm2 per gram of said composition.
|
