Compositions – Reductive bleachant – deoxidant – reductant – or generative – Deoxidant or oxygen scavenging
Patent
1985-03-25
1987-12-08
Thexton, Matthew A.
Compositions
Reductive bleachant, deoxidant, reductant, or generative
Deoxidant or oxygen scavenging
2521871, 2521872, 25218723, 25218724, 25218725, 25218726, 25218727, 25218728, 426118, 426133, 502406, 502400, 423219, C09K 300
Patent
active
047117419
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to a disoxidant having an excellent reaction activity (disoxidation activity) with atmospheric oxygen.
BACKGROUND ART
It has been hitherto known that metals or metal compounds react with atmospheric oxygen in the presence of water, and various disoxidants utilizing this principle have been proposed. In this case, as the metals or metal compounds, there have been used a wide variety of metals or metal compounds including, for example, iron, copper, manganese, zinc, nickel, aluminum, chromium, ferrosilicon, ferronickel, ferromanganese, iron carbide, iron sulfide, ferrous oxide, ferrous hydroxide, iron carbonyl, silicon iron, ferrous acetate, sodium sulfide, ferrous carbon, and the like. In general, any metals or metal compounds, so long as they are capable of being oxidized, is applicable singly or in the form of a mixture. Such metals or metal compounds, however, are slow in the rate at which they react with atmospheric oxygen and, therefore, are generally used in combination with various electrolytes used as a promoter. In this case, the disoxidation reaction activity of the metals or metal compounds may vary depending upon the kind of electrolytes used therewith. It has generally been believed that halogenated metals exhibit the most excellent disoxidation activity among them, and that oxyacid salts such as sulfates or nitrates are inferior and are not practical in actual use.
DISCLOSURE OF THE INVENTION
According to the present invention, there is provided a disoxidant comprising a metal component with a disoxidation activity and an electrolyte component, characterized in that an halogen-containing oxyacid salt is used as the electrolyte component.
According to the preferred embodiment of the present invention, there is provided a disoxidant having a combined function of both disoxidation activity and disinfection effect, when a chrorite is used as the above halogen-containing oxyacid salt.
Furthermore, according to another preferred embodiment of the present invention, there is provided a disoxidant characterized by the combination of a filler impregnated with the halogen-containing organic acid salt, with the metal component.
The metal component used in the present invention may be various known metals or metal compounds havng a disoxidation activity or an ability to be oxidized and including, for example, iron, copper, manganese, nickel, cobalt, aluminum, chromium, ferrosilicon, ferronickel, ferromanganese, iron carbide, iron sulfide, ferrous oxide, ferrous hydroxide, iron carbonyl, silicon iron, ferrous acetate, sodium sulfide, ferrous carbonate, and the like. These metals or metal compounds may be employed singly or in the form of a mixture.
The feature of the present invention resides in that a halogen-containing oxyacid salt is employed as the electrolyte component which is combined with the metal component. Such a halogen (chlorine, bromine, iodine, etc.)-containing oxyacid salt may be conventional halogenated salts having the general formula M.sub.1
YOm wherein M stands for a metal, n is the valence of M, Y stands for a halogen atom, and m is an integer of 1 to 4. Examples of the metals include alkali metals such as sodium and potassium, calcium, zinc, magnesium, iron, aluminum, and the like. The oxyacid salt may be used as ammonium salts, ethanol-amine salts, and so on. Illustrative of suitable halogen-containing oxyacid salts are sodium perchlorate, calcium perchlorate, sodium periodate, sodium chlorate, potassium chlorate, calcium chlorate, sodium bromate, calcium bromate, sodium iodate, potassium iodate, sodium chlorite, potassium chlorite, sodium hypochlorite, potassium hypochlorite, calcium hypochlorite, sodium hypobromite, and the like.
In the present invention, the amount of the halogen-containing oxyacid salt used is not limited to a specific range, but can be generally varied in a range from 0.001 to 100 parts by weight, preferably from 0.01 to 10 parts by weight, based on 100 parts by weight of the metal component. In order to combine th
REFERENCES:
patent: 1335949 (1920-04-01), Wilson et al.
patent: 2477631 (1949-08-01), Levy et al.
patent: 2482891 (1949-09-01), Aston
patent: 3591515 (1971-07-01), Lovely
patent: 3669894 (1972-06-01), Faust
patent: 3967039 (1976-06-01), Ninane et al.
patent: 4073741 (1978-02-01), Heintz
patent: 4192773 (1980-03-01), Yoshikawa et al.
patent: 4406813 (1983-09-01), Fujishima et al.
patent: 4547381 (1985-10-01), Mason et al.
Derwent Abstract No. C85-028528, (3rd Week 1985), "Deoxygenating Agent- . . . ".
Derwent Abstract No. 01256J/47, (47th Week 1982), "Chlorine-Dioxide- . . . ".
Derwent Abstract No. 96006D/52, (52nd Week 1981), "Food Preservative . . . ".
Fujishima Daishiro
Fujishima Shinichiro
Thexton Matthew A.
Yee Stephen F. K.
LandOfFree
Disoxidant composition does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Disoxidant composition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Disoxidant composition will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-21947