Oxygen absorbent
AssigneeMitsubishi Gas Chemical Company, Inc.
InventorsYoshiaki Inoue, Toshio Komatsu
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Abstract
The present invention relates to an oxygen absorbent, and more particularly to an oxygen absorbent applicable to preservation of dry foodstuffs and medical drugs and to the rust prevention of metallic articles. Thus, the invention provides an oxygen absorbent comprising: (A.sub.1) an unsaturated fatty acid and/or a fatty oil containing unsaturated fatty acid, (B.sub.1) a transition metal and/or a transition metal compound, and (C.sub.1) a basic substance, and an oxygen absorbent comprising: (A.sub.2) one member or a mixture of two or more members selected from unsaturated fatty acid compounds including unsaturated fatty acids, esters of unsaturated fatty acid and metallic salts of unsaturated fatty acid, (B.sub.2) a basic substance, and (C.sub.2) an adsorbent.
Claims15
An oxygen absorbent comprising:
- (A.sub.1) an unsaturated fatty acid and/or a fatty oil containing unsaturated fatty acid,
- (B.sub.1) a transition metal and/or a transition metal compound, and
- (C.sub.1) a basic substance which is an alkaline earth metal compound of at least one of an an oxide, hydroxide, carbonate, bicarbonate, silicate, phosphate or organic acid.
An oxygen absorbent comprising:
- (A.sub.2) one member or a mixture of two or more members selected from unsaturated fatty acid compounds including unsaturated fatty acids, esters of unsaturated fatty acids and metallic salts of unsaturated fatty acids,
- (B.sub.2) a basic substance which is an alkaline earth metal compound of at least one of an oxide, hydroxide, carbonate, bicarbonate, silicate, phosphate or organic acid, and
- (C.sub.2) an adsorbent.
An oxygen absorbent according to claim 6, wherein said metallic salt of an unsaturated fatty acid is an alkaline earth metal salt, alkali metal salt, transition metal salt or aluminum salt of an unsaturated fatty acid derived from an animal or vegetable oil.
Dependencies are inferred from the claim text.