JPS61145271A - Oxygen generating material - Google Patents

Abstract

PURPOSE:To provide an oxygen generator which generates O2 smoothly without need of pressurization or heating, prepared by packing a substance which reacts with water to generate O2 and a specified water-absorbing resin in a water- and oxygen-permeable bag and putting the bags in a rigid container. CONSTITUTION:A water- and oxygen-permeable bag containing a substance (a) which reacts with water to generate O2 (e.g. manganese peroxide) and a water-absorving resin (b) which, when expanded by absorbed water, has a larger volume than a rigid container (e.g. hydrolyzed starch/acrylic acid graft copolymer)is placed in a rigid container 1 which stands inner pressure caused by expansion of the resin (b) and a water-and oxygen-permeable cover 2 weigh ing 30-50g/m<2> which stands the above inner pressure is put on the container. Used as oxygen generator for transport of live fish, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an oxygen generator that reacts with water to generate oxygen.

(Prior art) There is an oxygen generator based on manganese peroxide and acid, which is used for emergency purposes in coal mines and the military.

In addition, an oxygen generator based on calcium peroxide and citric acid has been developed, but oxygen generation is not good enough if the drug is placed in an air-permeable, water-permeable package and placed in water.
It was discovered that oxygen generation can only be improved by lowering the water temperature, by shaking the water, or by applying pressure to the extent that the package containing the drug is squeezed in the hand.

(Purpose of the Invention) The present invention provides an oxygen system that can react with water to generate oxygen without pressurizing the drug from outside the bag or raising the water temperature by hand or the like. The purpose is to provide a generator.

(Problems to be Solved by the Invention) As mentioned above, it has been found that oxygen generation can be improved by bringing a system that reacts with water in water to generate oxygen into contact with water under pressure. By sealing a substance that reacts with water to generate oxygen in a water- and oxygen-permeable material that does not swell or expand with water, it can be thrown into water and squeezed with your hand to pressurize it. Oxygen can be easily generated in water without raising the water temperature.

(Means to Solve the Problem) In order to solve the above problem, a water and oxygen permeable bag containing a material that reacts with water to generate oxygen and a water-absorbing resin is used as a rigid container. an oxygen generating body that is housed in a container and covered with a water- and oxygen-permeable lid, the volume of which is caused by expansion of the water-absorbing resin when it absorbs water is larger than the internal volume of the rigid container; a water and oxygen permeable bag containing a material that reacts with swollen fluid to generate oxygen;
This is an oxygen generating body made by housing a water- and oxygen-permeable bag containing a water-absorbing resin in a rigid container, and a water- and oxygen-permeable lid. The oxygen generator is characterized by a larger internal volume than the internal volume of the rigid container.

(Function) Since the oxygen generating body of the present invention has the configuration described in -, the resin that absorbs water and expands in the rigid container expands to several tens to hundreds of times its volume, so it absorbs water and generates oxygen. When reacting with the material to generate oxygen, the reaction is performed under pressure in a rigid container, so that the oxygen is generated smoothly.

(Example) The present invention will be explained in more detail with reference to illustrated embodiments.

In Figure 1, an oxygen-generating material a and a water-absorbing resin are mixed in a bag and housed in a rigid container 1, which must be able to withstand the internal pressure caused by the expansion of the water-absorbing resin. Made from plastic molded products, etc. 2 is a lid that has a filtering effect, and is woven fabric that can withstand the internal pressure specified in 2.
Non-woven fabrics, perforated plastic plates, mixed paper, or laminates thereof are used, but 30 to 5 rl S'/
A water-repellent nylon non-woven fabric with a size of 1.5" is recommended. 3 is a retention device that prevents the lid from coming off due to internal pressure between -3 = volume 2 cold 1. The figure shows a case where the oxygen-generating material a and the water-absorbing resin are housed in separate bags 5 and 6. In both cases, the water-absorbing resin absorbs water and expands to become larger than the contents of the container, so that the water-absorbing resin absorbs water and expands into a rigid container. It is important that internal pressure is generated.

(1) Relatively stable peroxides such as manganese peroxide and calcium peroxide are used as substances that generate oxygen through reaction 1- with water, and ascorbic acid,
Powdered or granular organic acids such as malic acid, citric acid, and if9-taric acid are used, and in the coexistence with water, the two react to generate oxygen, but activated carbon, activated carbon, and other catalysts are also used.
A pH adjuster such as MgO or Mg(S103)z, and a binder such as gypsum are used. Heavy substances such as sand may also be added to prevent floating underwater.

(2) Water-absorbent resins include hydrolyzed Denzon-acrylic acid graft polymer (Sanwet, trade name, manufactured by Sanyo Chemical Co., Ltd.) and acrylic acid-vinyl alcohol copolymer (
Sumikagel 5-50. Product name, = 4- manufactured by Sumika Kagaku Co., Ltd.) Sodium polyacrylate (Sumikake 8 L 5-30, product name, manufactured by Sumika Kagaku Co., Ltd.) is recommended. Sumikake 8le 5-50 swells 500 to 700 times upon water absorption, and Sumikake 9le 5-30 swells approximately 30 times.

(3) Packaging materials such as bags are made of water-resistant mixed paper sheets containing woven fabrics, non-woven fabrics, perforated plastic sheets, and synthetic fibers, or laminates thereof. Examples of mixed paper materials include polyethylene-parcy rayon, which is breathable. It is preferable that the material is water-permeable and can be automatically filled with water-repellent and heat-sealable material so that it does not leak out when used as a package, and has a strength that can withstand the expansion pressure of the resin swollen by water absorption.

(4) The oxygen-generating materials include a peroxide such as 15 parts by weight of calcium peroxide, an organic acid such as 15 parts by weight of citric acid, and a catalyst (
A composition of about 407 consisting of 15 parts by weight of activated carbon), 5 parts by weight of a pH adjuster (pH increasing agent), and 50 parts by weight of a binder was used, and a water-absorbing resin (for example, Sumikake 8ru S-50) was used.
When the sample was placed in a rigid container and placed in water as shown in FIG. 1 or 2, the amount of oxygen generated was approximately 1 ton in 6 hours.

(Effects) Since the present invention has the above-described structure, when placed in water, oxygen bubbles are continuously generated, and the water-absorbing resin swells just by being placed in water. It is easy to increase the pressure uniformly, and it is most important that the oxygen-generating material reacts with water under pressure, and oxygen generation cannot be seen unless it is under pressure.

In addition, the oxygen generator of the present invention is extremely compact, making it convenient to transport and reducing costs. It is easy to manufacture and has low production costs. Oxygen generation is easy even at low temperatures, so it is suitable for oxygen generation for transporting fresh fish. It is safe and convenient for use as a body or for home use such as in a fishbowl, and is extremely useful and convenient as an oxygen generating source in coal mines or in emergency situations.

[Brief explanation of the drawing]

FIG. 1 and FIG. 2 are both explanatory diagrams of the oxygen generating body of the present invention. 1... Rigid container 2... Lid (filter type) 3... Holder 4. , 5 , 6...
...Bag a...Oxygen generating material b...
Water absorbent resin patent applicant Toppan Printing Co., Ltd. Figure 1 Figure 2

Claims (2)

[Claims] (1) Oxygen generation by placing a water- and oxygen-permeable bag made of a material that reacts with water to generate oxygen and a water-absorbing resin in a rigid container, and covering it with a water- and oxygen-permeable lid. An oxygen generating body characterized in that the volume due to expansion of the water-absorbent resin upon absorption of water is larger than the internal volume of the rigid container. (2) A water- and oxygen-permeable bag containing a material that generates oxygen by reacting with water, and a water-absorbing resin;
This is an oxygen generator that consists of a water- and oxygen-permeable bag housed in a rigid container and a water- and oxygen-permeable lid, and the volume due to the expansion of the water-absorbing resin when it absorbs water is larger than the internal volume of the rigid container. The oxygen generator according to claim 1, characterized in that: