CA1137313A - Exothermic metallic composition having oxidizing agent - Google Patents
Exothermic metallic composition having oxidizing agentInfo
- Publication number
- CA1137313A CA1137313A CA000361524A CA361524A CA1137313A CA 1137313 A CA1137313 A CA 1137313A CA 000361524 A CA000361524 A CA 000361524A CA 361524 A CA361524 A CA 361524A CA 1137313 A CA1137313 A CA 1137313A
- Authority
- CA
- Canada
- Prior art keywords
- parts
- weight
- particulate form
- oxidizing agent
- exothermic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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- Thermotherapy And Cooling Therapy Devices (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
Provided are a method of producing an exothermic metallic composition for a body warmer from a waste liquor formed in the production of ferric chloride, and the products thus produced. The exothermic metallic composition comprises at least one principal metallic member selected from the group consisting of iron, aluminum and magnesium in particulate form, and an oxidizing agent in an amount stoichiometrically equivalent to the principal metallic member comprising water, sodium chloride, ferrosoferric oxide in particulate form and at least one member selected from the group consisting of nickel, copper and zinc in particulate form respectively.
Provided are a method of producing an exothermic metallic composition for a body warmer from a waste liquor formed in the production of ferric chloride, and the products thus produced. The exothermic metallic composition comprises at least one principal metallic member selected from the group consisting of iron, aluminum and magnesium in particulate form, and an oxidizing agent in an amount stoichiometrically equivalent to the principal metallic member comprising water, sodium chloride, ferrosoferric oxide in particulate form and at least one member selected from the group consisting of nickel, copper and zinc in particulate form respectively.
Description
The present invention relates to a method of producing an exothermic metallic composition for a body warmer and the product thus obtained. Particularly, the present invention relates to a method of producing an exo_ thermic metallic composition for the body warmer from a waste liquor formed during the production of ferric chloride, and the products thus produced.
Various exothermic metallic compositions for a body warmer have been known, which compositions exhibit a chemical exothermic phenomenon by mixing a particulate oxidizing agent comprising an oxide such as ferrosoferric oxide and water with at least one of particulate principal metallic components such as iron, aluminum and magnesium. In the exothermic metallic compositions, various means of obtaining excellent temperature properties in the heatgeneration, particularly, initial temperature-rising property, have been tried. However, the conventional processes have defects that an expensive additive is required, complicated steps are required for the production of the composition, and costs of the product are high unfavorably.
An object of the present invention is to provide a method of producing the exothermic metallic composition from a waste liquor fonmed in the production of ferric chloride which liquor has been discharged as an industrial waste matter, which method is far more inexpensive and simpler than the conventional methods, as well as thus produced exothermic metallic composition for the body warmer has excellent exo-thermic properties.
Particularly, the present invention has been attained on the basis of a finding that particulate ferrosoferric oxide, copper, nickel, zinc and very small amounts of metallic materials can be extracted from the waste liquor formed in the production of ferric chloride, though the contents of them are a little variable.
The invention will now be described in greater detail with reference to the accompanying drawing. The sole figure of the accompanying drawing is a graph which shows the relationship between the temperature and service life of the exothermic metallic composition for a body warmer.
First of all, the waste liquor used as the starting material of the compositon of the present invention is formed in the production of ferric chloride by a well known method which will be shown below. The waste liquor has been discharged in the sea as an industrial waste matter. More particularly, ferric chloride has been produced as follows by the conven-tional method:
Iron scraps generally containing copper, nickel, zinc and other trace metals as impurities are placed in a reaction tank. Then, hydrochloric acid is added thereto to effect the reaction. The iron scraps are dissolved therein to form a ferric chloride solution while hydrogen is generated.
Fe ~ 2HCl = FeC12 ~ H2 After the generation of hydrogen ceases, the super-natant liquid is taken out, heated to concentrate and transferred into another reaction tank. Chlorine gas is introduced therein to effect the reaction, whereby a ferric chloride solution is obtained.
2FeC12 t C12 = 2FeC13 The solution is heated to concentrate, allowed to cool and solidified to obtain ferric chloride hexahydrate.
The product is pulverized to obtain the final product of ferric chloride.
The method of the present invention of producing the exothermic metallic composition from the waste liquor formed inevitably in the production of ferric chloride as described above will be illustrated by way of examples which merely illustrate the best modes presently contemplated for carrying out the invention.
First, the waste liquor is neutralized with, for example, sodium hydroxide and then oxidized with, for example, hydrogen peroxide.
Thus treated waste liquor is filtered by means of, for example, a filter press to obtain a oomposition compris-ing, for example, the following components:
Ferrosoferric oxide 30-80 parts by weight Water 10-30 " "
Sodium chloride 3-20 " "
Nickel 0.1_2 " "
Copper 0.1_2 " "
Zinc 0.1-2 " "
The oxidizing agent according to the present inven-tion can be obtained by merely adjusting water content of thus extracted composition to 20_50 parts by weight.
The oxidizing agent is mixed with at least one particulate principal metallic component selected from the group consisting of iron, aluminum and magnesium.
Thus, the exothermic metallic composition for the body warmer is obtained according to the present invention.
For obtaining more excellent thermal properties of the composition of the present invention, it is preferred to further incorporate components and materials which will be described below therein.
Namely, it is preferred to add 5-30 parts by weight of at least one material selected from the group consisting of ferrous oxide, ferric oxide, magnesium oxide, pearlite, manganese dioxide, black copper oxide and trimanganese tetroxide as oxidizing agen~(s) in addition to the above described oxidizing agents.
Further, the above oxidizing agents may be added with 10-30 parts by weight of active carbon and 0.1-5.0 parts by weight of at least one high molecular weight compound selected from the group consisting of carboxymethyl cellulose and alginic acid as oxidation assistants. Particularly by the addition of the high molecular weight compounds, it has been found that the exothermic temperature can be made uniform as will be described below.
It has been also found that if 0.5-5.0 parts by weight of rice hulls in the oxidizing agent are wetted with the water contained in the above oxidizing agent, the exothermic condition of the exothermic metallic composition can be maintained for a longer period of time.
At any rate, the water content of the oxidizing agent inc]uding the oxidation assistants employed if any is limited to 20_50 parts by weight in the present invention.
Further, it should be understood that the principal metallic components, oxidizing agents and oxidation assistants in the exothermic metallic compositions have particle sizes within the range of 150_850 mesh and it should be also under-stood that in the exothermic metallic composition, the amount of the principal metallic component or components such as ~137313 iron, aluminum and/or magnesium to which the oxidizing agent including oxidation assistants is added corresponds to the total amount of the oxidizing agent including oxidation assis-tants employed regardless whether one or more of the principal metallic components are employed in preparing the exDthermic metallic compositions of the present invention.
The present invention will now be described by way of examples of the oxidizing agents of the present invention which may include the oxidation assistants.
Ferrosoferric oxide 50 parts by weight Nickel 0-5 Sodium chloride 10 " "
Water Remainder Ferrosoferric oxide 60 parts by weight Copper 0-5 " "
Zinc 0.5 Sodium chloride 10 " "
Water Remainder Ferrosoferric oxide 30 parts by weight Copper 0.4 " "
Ferrous oxide 10 " "
Sodium chloride 8 " "
Active carbon 25 " "
Water Remainder Ferrosoferric oxide 30 parts by weight Zinc 0.5 " "
Copper 0.5 " "
Ferrous oxide 5 " "
Ferric oxide 2 " "
Magnesium oxide 1 " "
Pearlite 2 " "
Sodium chloride 10 " "
Active carbon 20 " "
Water Remainder Ferrosoferric oxide 40 parts by weiyh-t Nickel 1 " "
11373~3 Copper 0.5 " "
Zinc 0.4 " "
Black copper oxide 5 " "
Manganese dioxide 5 " "
Sodium chloride 5 " "
Active carbon 10 " "
Alginic acid 3 " "
Rice hulls 3 " "
Water Remainder Ferrosoferric oxide 30 parts by weight Copper 1 " "
Nickel 0.5 " "
Manganese dioxide 15 " "
Sodium chloride 7 " "
Active carbon lS " "
CMC 3 .. "
Rice hulls 2 " "
Water Remainder Ferrosoferric oxide 30 parts b~ weight Zinc 0.4 Nickel 0.5 Ferrous oxide 5 " "
Ferric oxide 2 " "
Magnesium oxide 1 " "
Pearlite 2 " "
Sodium chloride 10 " "
Active carbon 20 " "
Alginic acid 3 " "
Water Remainder When the exothermic metallic composition of the present invention referred to hereinabove is employed for a body warmer, a predetermined amount of any one of the various oxidizing agents referred to hereinabove is mixed with the same amount of one or more of the principal metallic compo-nents referred to hereinabove, and the mixture is placed in a first container in the form of a consumable bag and the first container is sealed. Then, the first container is further placed in a second consumable container having a slightly larger capacity than that of the first container and the second container is sealed airtightly by, for example, a heat sealing means.
The second container is maintained in its sealed condition until the exothermic metallic composition placed in the first container is used for the body warmer.
The first container is in the form of a porous bag which is capable of supplying oxygen present in the open air to the contents of the bag. As is well known, when the porous bag has a high permeability of air or high oxygen supply capacity, the temperature of the exothermic metallic composition is relatively high, but the service life of the composition is relatively short. On the other hand, when the porous bag has a low permeability of air or low oxygen supply capacity, the temperature of the composition is relatively low, but the service life of the composition is relatively long.
It is generally recognized that the suitable temperature range for use as the exothermic metallic composition for a body warmer is 45-55C. In order to attain the temperature range referred to hereinabove, it has been found that the porous bag should have the permeability of air within the range of from 80 cc/cm2 per minute to 120 cc/cm2 per minute through a series of permeability of air tests in accordance with the standard test procedure. The porous bag for containing the exothermic metallic composition may be produced from a woven cloth, non-woven cloth, porous synthetic resin sheet, porous film, porous paper and synthetic resin sheet lamination and porous paper and synthetic resin film lamination.
The second container is produced from a material substantially impermeable to air or oxygen such as a sheet _ 10 --or film of a synthetic resin, for example, polyethylene or a laminate of the sheet or film and a metal foil such as aluminum foil. This inhibits the substantial exothermic reaction of the exothermic metallic composition in the first container.
In use, the first container is taken out of the second container, then the exothermic metallic composition placed in the porous container is allowed to initiate the exothermic reaction with oxygen present in the open air.
The sole figure of the accompanying drawing is a graph showing the relationship between the temperature and service life (in hours) of the exothermic metallic composi-tions for the body warmer when the composition is placed in a porous synthetic resin film bag having the permeability of air of 120 cc/cm2 per minute, wherein the solid line represents properties of a composition containing the oxidizing agent of the present invention shown in EXAMPLE 4, dot-dash line represents properties of a conventional composition and chain line represents properties of the same composition as that of t~e invention but free of carboxymethyl cellulose or alginic acid. From the figure, it will be understood that the compo-sition of the present invention has a quite excellent initial temperature-rising property, or in other words, time required for attaining the maximum temperature from the initiation of the exothermic reaction is very short. It will also be under-stood that by the incorporation of carboxymethyl cellulose or alginic acid in the composition of the present invention, the uniform exothermic temperature can be obtained in addition to the excellent initial temperature-rising property.
Thus, according to the present invention, the exo-thermic metallic composition for the body warmer having the quite excellent exothermic temperature-rising peoperty can be provided from the waste liquor formed in the production of ferric chloride. The present invention has advantages that the composition can be produced easily at low costs and that the industrial waste matter can be utilized effectively.
Various exothermic metallic compositions for a body warmer have been known, which compositions exhibit a chemical exothermic phenomenon by mixing a particulate oxidizing agent comprising an oxide such as ferrosoferric oxide and water with at least one of particulate principal metallic components such as iron, aluminum and magnesium. In the exothermic metallic compositions, various means of obtaining excellent temperature properties in the heatgeneration, particularly, initial temperature-rising property, have been tried. However, the conventional processes have defects that an expensive additive is required, complicated steps are required for the production of the composition, and costs of the product are high unfavorably.
An object of the present invention is to provide a method of producing the exothermic metallic composition from a waste liquor fonmed in the production of ferric chloride which liquor has been discharged as an industrial waste matter, which method is far more inexpensive and simpler than the conventional methods, as well as thus produced exothermic metallic composition for the body warmer has excellent exo-thermic properties.
Particularly, the present invention has been attained on the basis of a finding that particulate ferrosoferric oxide, copper, nickel, zinc and very small amounts of metallic materials can be extracted from the waste liquor formed in the production of ferric chloride, though the contents of them are a little variable.
The invention will now be described in greater detail with reference to the accompanying drawing. The sole figure of the accompanying drawing is a graph which shows the relationship between the temperature and service life of the exothermic metallic composition for a body warmer.
First of all, the waste liquor used as the starting material of the compositon of the present invention is formed in the production of ferric chloride by a well known method which will be shown below. The waste liquor has been discharged in the sea as an industrial waste matter. More particularly, ferric chloride has been produced as follows by the conven-tional method:
Iron scraps generally containing copper, nickel, zinc and other trace metals as impurities are placed in a reaction tank. Then, hydrochloric acid is added thereto to effect the reaction. The iron scraps are dissolved therein to form a ferric chloride solution while hydrogen is generated.
Fe ~ 2HCl = FeC12 ~ H2 After the generation of hydrogen ceases, the super-natant liquid is taken out, heated to concentrate and transferred into another reaction tank. Chlorine gas is introduced therein to effect the reaction, whereby a ferric chloride solution is obtained.
2FeC12 t C12 = 2FeC13 The solution is heated to concentrate, allowed to cool and solidified to obtain ferric chloride hexahydrate.
The product is pulverized to obtain the final product of ferric chloride.
The method of the present invention of producing the exothermic metallic composition from the waste liquor formed inevitably in the production of ferric chloride as described above will be illustrated by way of examples which merely illustrate the best modes presently contemplated for carrying out the invention.
First, the waste liquor is neutralized with, for example, sodium hydroxide and then oxidized with, for example, hydrogen peroxide.
Thus treated waste liquor is filtered by means of, for example, a filter press to obtain a oomposition compris-ing, for example, the following components:
Ferrosoferric oxide 30-80 parts by weight Water 10-30 " "
Sodium chloride 3-20 " "
Nickel 0.1_2 " "
Copper 0.1_2 " "
Zinc 0.1-2 " "
The oxidizing agent according to the present inven-tion can be obtained by merely adjusting water content of thus extracted composition to 20_50 parts by weight.
The oxidizing agent is mixed with at least one particulate principal metallic component selected from the group consisting of iron, aluminum and magnesium.
Thus, the exothermic metallic composition for the body warmer is obtained according to the present invention.
For obtaining more excellent thermal properties of the composition of the present invention, it is preferred to further incorporate components and materials which will be described below therein.
Namely, it is preferred to add 5-30 parts by weight of at least one material selected from the group consisting of ferrous oxide, ferric oxide, magnesium oxide, pearlite, manganese dioxide, black copper oxide and trimanganese tetroxide as oxidizing agen~(s) in addition to the above described oxidizing agents.
Further, the above oxidizing agents may be added with 10-30 parts by weight of active carbon and 0.1-5.0 parts by weight of at least one high molecular weight compound selected from the group consisting of carboxymethyl cellulose and alginic acid as oxidation assistants. Particularly by the addition of the high molecular weight compounds, it has been found that the exothermic temperature can be made uniform as will be described below.
It has been also found that if 0.5-5.0 parts by weight of rice hulls in the oxidizing agent are wetted with the water contained in the above oxidizing agent, the exothermic condition of the exothermic metallic composition can be maintained for a longer period of time.
At any rate, the water content of the oxidizing agent inc]uding the oxidation assistants employed if any is limited to 20_50 parts by weight in the present invention.
Further, it should be understood that the principal metallic components, oxidizing agents and oxidation assistants in the exothermic metallic compositions have particle sizes within the range of 150_850 mesh and it should be also under-stood that in the exothermic metallic composition, the amount of the principal metallic component or components such as ~137313 iron, aluminum and/or magnesium to which the oxidizing agent including oxidation assistants is added corresponds to the total amount of the oxidizing agent including oxidation assis-tants employed regardless whether one or more of the principal metallic components are employed in preparing the exDthermic metallic compositions of the present invention.
The present invention will now be described by way of examples of the oxidizing agents of the present invention which may include the oxidation assistants.
Ferrosoferric oxide 50 parts by weight Nickel 0-5 Sodium chloride 10 " "
Water Remainder Ferrosoferric oxide 60 parts by weight Copper 0-5 " "
Zinc 0.5 Sodium chloride 10 " "
Water Remainder Ferrosoferric oxide 30 parts by weight Copper 0.4 " "
Ferrous oxide 10 " "
Sodium chloride 8 " "
Active carbon 25 " "
Water Remainder Ferrosoferric oxide 30 parts by weight Zinc 0.5 " "
Copper 0.5 " "
Ferrous oxide 5 " "
Ferric oxide 2 " "
Magnesium oxide 1 " "
Pearlite 2 " "
Sodium chloride 10 " "
Active carbon 20 " "
Water Remainder Ferrosoferric oxide 40 parts by weiyh-t Nickel 1 " "
11373~3 Copper 0.5 " "
Zinc 0.4 " "
Black copper oxide 5 " "
Manganese dioxide 5 " "
Sodium chloride 5 " "
Active carbon 10 " "
Alginic acid 3 " "
Rice hulls 3 " "
Water Remainder Ferrosoferric oxide 30 parts by weight Copper 1 " "
Nickel 0.5 " "
Manganese dioxide 15 " "
Sodium chloride 7 " "
Active carbon lS " "
CMC 3 .. "
Rice hulls 2 " "
Water Remainder Ferrosoferric oxide 30 parts b~ weight Zinc 0.4 Nickel 0.5 Ferrous oxide 5 " "
Ferric oxide 2 " "
Magnesium oxide 1 " "
Pearlite 2 " "
Sodium chloride 10 " "
Active carbon 20 " "
Alginic acid 3 " "
Water Remainder When the exothermic metallic composition of the present invention referred to hereinabove is employed for a body warmer, a predetermined amount of any one of the various oxidizing agents referred to hereinabove is mixed with the same amount of one or more of the principal metallic compo-nents referred to hereinabove, and the mixture is placed in a first container in the form of a consumable bag and the first container is sealed. Then, the first container is further placed in a second consumable container having a slightly larger capacity than that of the first container and the second container is sealed airtightly by, for example, a heat sealing means.
The second container is maintained in its sealed condition until the exothermic metallic composition placed in the first container is used for the body warmer.
The first container is in the form of a porous bag which is capable of supplying oxygen present in the open air to the contents of the bag. As is well known, when the porous bag has a high permeability of air or high oxygen supply capacity, the temperature of the exothermic metallic composition is relatively high, but the service life of the composition is relatively short. On the other hand, when the porous bag has a low permeability of air or low oxygen supply capacity, the temperature of the composition is relatively low, but the service life of the composition is relatively long.
It is generally recognized that the suitable temperature range for use as the exothermic metallic composition for a body warmer is 45-55C. In order to attain the temperature range referred to hereinabove, it has been found that the porous bag should have the permeability of air within the range of from 80 cc/cm2 per minute to 120 cc/cm2 per minute through a series of permeability of air tests in accordance with the standard test procedure. The porous bag for containing the exothermic metallic composition may be produced from a woven cloth, non-woven cloth, porous synthetic resin sheet, porous film, porous paper and synthetic resin sheet lamination and porous paper and synthetic resin film lamination.
The second container is produced from a material substantially impermeable to air or oxygen such as a sheet _ 10 --or film of a synthetic resin, for example, polyethylene or a laminate of the sheet or film and a metal foil such as aluminum foil. This inhibits the substantial exothermic reaction of the exothermic metallic composition in the first container.
In use, the first container is taken out of the second container, then the exothermic metallic composition placed in the porous container is allowed to initiate the exothermic reaction with oxygen present in the open air.
The sole figure of the accompanying drawing is a graph showing the relationship between the temperature and service life (in hours) of the exothermic metallic composi-tions for the body warmer when the composition is placed in a porous synthetic resin film bag having the permeability of air of 120 cc/cm2 per minute, wherein the solid line represents properties of a composition containing the oxidizing agent of the present invention shown in EXAMPLE 4, dot-dash line represents properties of a conventional composition and chain line represents properties of the same composition as that of t~e invention but free of carboxymethyl cellulose or alginic acid. From the figure, it will be understood that the compo-sition of the present invention has a quite excellent initial temperature-rising property, or in other words, time required for attaining the maximum temperature from the initiation of the exothermic reaction is very short. It will also be under-stood that by the incorporation of carboxymethyl cellulose or alginic acid in the composition of the present invention, the uniform exothermic temperature can be obtained in addition to the excellent initial temperature-rising property.
Thus, according to the present invention, the exo-thermic metallic composition for the body warmer having the quite excellent exothermic temperature-rising peoperty can be provided from the waste liquor formed in the production of ferric chloride. The present invention has advantages that the composition can be produced easily at low costs and that the industrial waste matter can be utilized effectively.
Claims (7)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A method of producing an exothermic metallic composition for a body warmer comprising in sequence:
collecting a waste liquor containing a trace of metallic impurities formed in a production of ferric chloride;
neutralizing said waste liquor;
oxidizing said neutralized waste liquor;
filtering said oxidized waste liquor to obtain a composition;
adjusting water content of said composition obtained by said filtration to 20-50 parts by weight to botain an oxidizing agent comprising 20-50 parts by weight of water, 3-20 parts by weight of sodium chloride, 30-80 parts by weight of ferrosoferric oxide in particulate form and at least one member selected from the group consisting of 0.1-2 parts by weight of nickel in particulate form, 0.1-2 parts by weight of copper in particulate form and 0.1-2 parts by weight of zinc in particulate form; and mixing said oxidizing agent with at least one principal metallic member selected from the group consisting of iron, aluminum and magnesium in particulate form in an amount stoichiometrically equal to said principal metallic member.
collecting a waste liquor containing a trace of metallic impurities formed in a production of ferric chloride;
neutralizing said waste liquor;
oxidizing said neutralized waste liquor;
filtering said oxidized waste liquor to obtain a composition;
adjusting water content of said composition obtained by said filtration to 20-50 parts by weight to botain an oxidizing agent comprising 20-50 parts by weight of water, 3-20 parts by weight of sodium chloride, 30-80 parts by weight of ferrosoferric oxide in particulate form and at least one member selected from the group consisting of 0.1-2 parts by weight of nickel in particulate form, 0.1-2 parts by weight of copper in particulate form and 0.1-2 parts by weight of zinc in particulate form; and mixing said oxidizing agent with at least one principal metallic member selected from the group consisting of iron, aluminum and magnesium in particulate form in an amount stoichiometrically equal to said principal metallic member.
2. An exothermic metallic composition for a body warmer comprising:
at least one principal metallic member selected from the group consisting of iron, aluminum and magnesium in particulate form; and an oxidizing agent in an amount stoichiometrically equal to said principal metallic member comprising 20-50 parts by weight of water, 3-20 parts by weight of sodium chloride, 30-80 parts by weight of ferrosoferric oxide in particulate form, and at least one member selected from the group consist-ing of 0.1-2 parts by weight of nickel in particulate form, 0.1-2 parts by weight of copper in particulate form and 0.1-2 parts by weight of zinc in particulate form.
at least one principal metallic member selected from the group consisting of iron, aluminum and magnesium in particulate form; and an oxidizing agent in an amount stoichiometrically equal to said principal metallic member comprising 20-50 parts by weight of water, 3-20 parts by weight of sodium chloride, 30-80 parts by weight of ferrosoferric oxide in particulate form, and at least one member selected from the group consist-ing of 0.1-2 parts by weight of nickel in particulate form, 0.1-2 parts by weight of copper in particulate form and 0.1-2 parts by weight of zinc in particulate form.
3. The exothermic metallic composition as claimed in claim 2, wherein said oxidizing agent further comprises 0.1-5.0 parts by weight of at least one high molecular weight compound selected from the group consisting of carboxymethyl cellulose and alginic acid.
4. The exothermic metallic composition as claimed in claim 3, wherein said oxidizing agent further comprises 0.5-5.0 parts by weight of rice hulls, said rice hulls being wetted with said water in said oxidizing agent.
5. The exothermic metallic composition as claimed in claim 3, wherein said oxidizing agent further comprises 10-30 parts by weight of active carbon.
6. The exothermic metallic composition as claimed in claim 3, wherein said oxidizing agent further comprises 5-30 parts by weight of at least one material selected from the group consisting of ferrous oxide, ferric oxide, magnesium oxide, pearlite, manganese dioxide, black copper oxide and trimanganese tetroxide.
7. A body warmer comprising:
an exothermic metallic composition which comprises at least one principal metallic member selected from the group consisting of iron, aluminum and magnesium in particulate form, and an oxidizing agent in an amount stoichio-metrically equal to said principal metallic member comprising 20-50 parts by weight of water, 3-20 parts by weight of sodium chloride, 30-80 parts by weight of ferrosoferric oxide in particulate form and at least one member selected from the group consisting of 0.1-2 parts by weight of nickel in particulate form, 0.1-2 parts by wieght of copper in particulate form and 0.1-2 parts by weight of zinc in particulate form;
first container for containing said exothermic metallic composition, said first container being in the form of a porous bag; and second container for containing said first container, said second container being made of a material substantially impermeable of air or oxygen.
an exothermic metallic composition which comprises at least one principal metallic member selected from the group consisting of iron, aluminum and magnesium in particulate form, and an oxidizing agent in an amount stoichio-metrically equal to said principal metallic member comprising 20-50 parts by weight of water, 3-20 parts by weight of sodium chloride, 30-80 parts by weight of ferrosoferric oxide in particulate form and at least one member selected from the group consisting of 0.1-2 parts by weight of nickel in particulate form, 0.1-2 parts by wieght of copper in particulate form and 0.1-2 parts by weight of zinc in particulate form;
first container for containing said exothermic metallic composition, said first container being in the form of a porous bag; and second container for containing said first container, said second container being made of a material substantially impermeable of air or oxygen.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54-127304 | 1979-10-04 | ||
| JP54127304A JPS5839460B2 (en) | 1979-10-04 | 1979-10-04 | Method for producing composition for chemical filler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1137313A true CA1137313A (en) | 1982-12-14 |
Family
ID=14956632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000361524A Expired CA1137313A (en) | 1979-10-04 | 1980-10-03 | Exothermic metallic composition having oxidizing agent |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS5839460B2 (en) |
| CA (1) | CA1137313A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03252432A (en) * | 1990-03-01 | 1991-11-11 | Bridgestone Corp | rubber composition |
| DE69515977T2 (en) * | 1994-12-27 | 2000-10-19 | Bridgestone Corp., Tokio/Tokyo | Foamed rubber compound and use in pneumatic tires |
| US5776991A (en) * | 1995-03-29 | 1998-07-07 | Bridgestone Corporation | Foamed rubber compositions for pneumatic tires and method of producing the same |
| JP4731905B2 (en) * | 2002-06-05 | 2011-07-27 | ジ アディショナル ディレクター（アイピーアール）、ディフェンス リサーチ アンド デベロップメント オーガニゼイション | Electrochemically reacting composition and process for producing the same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5360885A (en) * | 1976-11-13 | 1978-05-31 | Hiroshi Nakagawa | Metal exothermic composites for body wormers |
-
1979
- 1979-10-04 JP JP54127304A patent/JPS5839460B2/en not_active Expired
-
1980
- 1980-10-03 CA CA000361524A patent/CA1137313A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5652057A (en) | 1981-05-09 |
| JPS5839460B2 (en) | 1983-08-30 |
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