JP2002263484A - Water absorption body and method for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water absorption body which is light in weight and small in volume when carried, can be swiftly carried in a large amount without depending on manpower, absorbs water to satisfy the functions of weight, volume and shape follow-up property of the outline when used and removes unnecessary water, and to provide a water absorption body having a function as a sandbag. SOLUTION: The water absorption body contains a water absorbing material and a substance to be sucked in a water permeable bag body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water absorbing body used for removing unnecessary water remaining due to water leakage or flooding, and a sandbag used for preventing or repairing the embankment of a river due to flooding or the like. The present invention relates to a water absorbing body having the function of

[0002]

2. Description of the Related Art As a water absorber used for removing unnecessary water remaining due to water leakage or flooding, a fibrous material such as cloth has been used. However, when a large amount of water needs to be removed, such as a rupture of a water pipe due to a disaster such as an earthquake, a large-scale flooding of water over a wide area due to flood damage, or a leak from a tank in a factory, the water absorption capacity of such conventional water absorbers Was not enough. The water-absorbing body having the function of a sandbag is a civil engineering material for preventing flooding of rivers and lakes due to a flood or the like. Conventionally, for example, a hemp bag filled with soil has been used. Such a conventional water absorber has been produced near a disaster site because it is difficult to transport because of its large weight and volume.
In the event of a disaster, it is necessary to immediately apply a water absorber having the function of a sandbag to the necessary places when necessary.
In the case of the conventional water absorber, its production often cannot keep up with the required amount. In addition, when carrying the water absorbing body from a distance, the water absorbing body must be carried using a vehicle or the like, and labor for loading and unloading the water absorbing body is required. Furthermore, vehicles may not be able to pass to the disaster site due to road collapse. Under such circumstances, more human life property was lost due to floods.

[0003]

As described above, a conventional water absorber or a sand absorber having a function as a sandbag used for removing unnecessary water remaining due to water leakage or flooding is large in both weight and volume, and is difficult to carry. It takes labor. Therefore, there is a demand for a water absorber that is small in both weight and volume and easy to carry. In the present invention, both weight and volume during transportation are small, and can be transported in large quantities and quickly without human power, and when used, satisfies the function of absorbing weight, volume and external shape following the water. An object of the present invention is to provide a water absorbing body having a function of a water absorbing body or a sandbag for removing unnecessary water. Another object of the present invention is to provide a water absorbent that can be repeatedly used by drying and has shape stability. Another object of the present invention is to provide a water absorber having a higher water absorption than a conventional water absorber or a water absorber having a function as a sandbag used for removing unnecessary water remaining in water or flooding. Furthermore, the present invention uses a polymer waste material such as a resin or an inorganic solid waste material such as a metal or a ceramic, for example, which has been difficult to treat as a waste, and provides a higher value-added product to the global environment. The purpose is to contribute.

[0004]

Means for Solving the Problems The present inventors have studied the transportability of the water-absorbing body, and as a result, if the substance to be aspirated is allowed to coexist with the water-absorbing body, a large amount and speedy operation can be performed at once without human power. It was found that it could be transported. For example, if a magnetic substance is used as the substance to be attracted, the water absorbent can be transported in large quantities and quickly at a time by a crane or a belt conveyor by magnetically attracting the water absorbent. In addition, if inorganic solid waste materials such as metals and ceramics are recycled as these substances to be sucked, these materials are difficult to dispose in dismantling of electronic device parts, so that they can contribute to the global environment. We also found that there was an advantage that we could do it.

The inventors of the present invention have further conducted intensive studies to achieve the above object. As a result, the use of a modified polymer compound in which an acidic group is introduced into a polymer compound containing acrylonitrile and styrene and / or a conjugated diene is used. However, the present inventors have obtained unexpected findings that the above-mentioned objects can be achieved at once. That is, since such a compound has water absorption and exhibits a gel state by water absorption, both the weight and the volume are small at the time of transportation, and when used, the compound absorbs water and sufficiently satisfies the function of following the shape of the weight, volume and external shape. It is possible to provide a water absorber having a high function of removing unnecessary water or a function of a sandbag. Furthermore, a water absorbent using the modified polymer compound as a water absorbing material has an excellent utility of being able to cope with urgency in use since the water absorbing speed is higher than that of a conventional sandbag. In addition, the water absorber has an advantage that it can contribute to the global environment by recycling polymer waste materials such as resins, which have been troubled as wastes.

That is, the present invention provides (1) a water-absorbing body characterized in that a water-absorbing material and a substance to be sucked are contained in a water-permeable bag-like body, and (2) a substance to be sucked is a magnetic substance. The water-absorbing body according to the above (1), wherein the (3) water-absorbing material is acidic to a polymer compound containing (a) acrylonitrile and (b) at least one or more of styrene and / or conjugated diene. The water-absorbent material according to the above (1), which is mainly composed of a modified polymer compound into which a group has been introduced, (4) the support is further contained in a water-permeable bag-like material. (5) The absorbent body according to (4), wherein the support is a flexible network.
(6) The water-absorbing material mainly comprises a modified polymer compound in which an acidic group is introduced into a polymer compound containing (a) acrylonitrile and (b) at least one of styrene and / or conjugated diene. (4) wherein the water-absorbing material is supported by a support.
And (7) a polymer compound obtained from waste material, (a) acrylonitrile and (b) styrene and / or
Or a polymer compound containing at least one conjugated diene; and (8) a water-absorbent body as described in (3) above, wherein a solid having a specific gravity of 1 or more is contained in a water-permeable bag. (9) The water absorbent according to (8), wherein the solid having a specific gravity of 1 or more is made of a natural mineral. (10) The water absorbent according to (8), wherein the solid having a specific gravity of 1 or more is made of waste.
The water absorbent according to the above (8), wherein the solid having a specific gravity of 1 or more is formed by binding waste.
2) Salt formation in which an acidic group introduced into a polymer compound containing (a) acrylonitrile and (b) at least one or more of styrene and / or conjugated diene is formed as a salt with a metal. The water absorbent according to the above (3), which comprises a modified polymer compound.
3) the metal is one or two or more metals selected from the group consisting of zinc, copper and silver, wherein the water absorber according to the above (12); (15) The water absorbent according to the above (3), which is contained in a water-permeable bag-like body, wherein the (15) surfactant is an anionic surfactant and / or a nonionic surfactant. (14) The water absorbent according to (14), (16) The magnetic absorbent comprises waste, and (17) The magnetic absorbent comprises waste. (2) characterized in that it is formed by wearing
3. The water absorbent according to item 1.

Further, according to the present invention, an acidic group is introduced into a polymer compound containing (a) acrylonitrile obtained from waste material and (b) at least one kind of styrene and / or conjugated diene. (19) a water-absorbent material, wherein a water-absorbing material mainly composed of a modified polymer compound and a magnetic material are contained in a water-permeable bag-like material; (20) The absorbent body according to (18), wherein the support is a flexible net-like body (1).
(21) The water-absorbing body according to (19), wherein the water-absorbing material is supported by a support, and (22) a solid substance having a specific gravity of 1 or more permeates water. (18) characterized in that it is contained in a plastic bag.
(23) The water absorbent according to (22), wherein the solid having a specific gravity of 1 or more is composed of a natural mineral. (25) The water absorber according to the above (22), wherein
The water absorbent according to (22), wherein the solid having a specific gravity of 1 or more is formed by binding waste.
6) The water-absorbing material is formed of a polymer compound containing (a) acrylonitrile and (b) at least one of styrene and / or conjugated diene obtained from waste material, and the acidic group introduced into the polymer forms a salt with a metal. And (27) one or more kinds of metals selected from the group consisting of zinc, copper and silver. (28) The water-absorbing body according to (26), wherein the water-absorbing body is a metal, and (28) a surfactant is further contained in the water-permeable bag. Water absorber, (2
9) The water absorbent according to the above (28), wherein the surfactant is an anionic surfactant and / or a nonionic surfactant, and (30) the magnetic substance is made of waste. The water absorbent according to the above (18),
(31) The water absorbent according to (18), wherein the magnetic material is formed by binding waste.

The present invention also provides (32) a method for producing a water-absorbing body, which comprises filling a water-absorbing material and a substance to be sucked into a water-permeable bag, and (33) a method wherein the substance to be sucked is a magnetic substance. (32) The method for producing a water-absorbing body according to the above (32), wherein (34) the water-absorbing material contains (a) acrylonitrile and (b) at least one or more of styrene and / or conjugated diene. The method for producing a water absorbent according to the above (32), wherein the method is mainly composed of a modified polymer compound having an acidic group introduced into the molecular compound.
(35) The method for producing a water-absorbing body according to (32), wherein the support is further filled in a water-permeable bag-like body. (36) The support is a flexible network. (35) wherein the water-absorbing material according to (35) above, wherein the water-absorbing material has an acidic group introduced into a polymer compound containing (a) acrylonitrile and (b) at least one of styrene and / or conjugated diene. Wherein the water-absorbing material according to (35), wherein the water-absorbing material is supported by a support, and (38) the polymer compound, (A) obtained from waste wood
(34) The method for producing a water absorbent according to (34), wherein the polymer is a polymer compound containing acrylonitrile and (b) at least one of styrene and / or conjugated diene. The above-mentioned (3), wherein the solid is filled in a water-permeable bag.
(2) The method for producing a water absorbent according to (2), wherein (3) the solid having a specific gravity of 1 or more is made of a natural mineral.
9) The method for producing a water absorbent according to 9), (41) wherein the solid having a specific gravity of 1 or more is made of waste.
(42) The method for producing a water absorbent according to (39), wherein the solid substance having a specific gravity of 1 or more is formed by binding waste. The water-absorbing material has a high salt-forming modification in which an acidic group introduced into a polymer compound containing (a) acrylonitrile and (b) at least one of styrene and / or conjugated diene forms a salt with a metal. The method for producing a water absorbent according to the above (34), which comprises a molecular compound;
(44) The method for producing a water absorbent according to the above (43), wherein the metal is one or more metals selected from the group consisting of zinc, copper and silver. (45) (4) The method for producing a water absorbent according to the above (34), wherein the surfactant is filled in a water-permeable bag.
6) The method for producing a water-absorbing body according to the above item (45), wherein the surfactant is an anionic surfactant and / or a nonionic surfactant. (48) The method for producing a water absorbent according to the above (33), wherein the magnetic substance is formed by binding waste. Manufacturing method.

Further, the present invention relates to (49) acrylonitrile obtained from waste material and (b) styrene and / or
Alternatively, a water-permeable bag and a water-absorbing material mainly composed of a modified polymer in which an acidic group is introduced into a polymer containing at least one or more conjugated dienes are filled. Manufacturing method of the water absorbing body, (5
0) The method for producing a water absorbent according to the above (49), further comprising filling the support into a water-permeable bag.
(51) The method for producing a water-absorbing body according to (50), wherein the support is a flexible network, and (52) the water-absorbing material is supported by the support. (50) The method for producing a water absorbent according to (50),
The method for producing a water absorbent according to the above (49), wherein a solid having a specific gravity of 1 or more is filled in a water-permeable bag.
(54) The method for producing a water absorbent according to the above (53), wherein the solid having a specific gravity of 1 or more is made of a natural mineral.
(55) The method for producing a water absorbent according to the above (53), wherein the solid matter having a specific gravity of 1 or more is made of waste.
6) The method for producing a water-absorbing body according to the above item (53), wherein the solid matter having a specific gravity of 1 or more is formed by binding wastes. (57) The water-absorbing material is obtained from waste material. A) a salt-forming modified polymer compound in which an acidic group introduced into a polymer compound containing acrylonitrile and (b) at least one of styrene and / or conjugated diene forms a salt with a metal; (49) The method for producing a water absorbent according to (49), wherein the metal is one or more metals selected from the group consisting of zinc, copper and silver. (5
(59) The method for producing a water absorbent according to (49), wherein the surfactant is further filled in a water-permeable bag. (60) The method for producing a water absorbent according to (49). The method according to (59), wherein the activator is an anionic surfactant and / or a nonionic surfactant. (61) The magnetic substance is made of waste. (62) The method for producing a water absorbent according to the item (49), wherein the magnetic material comprises a magnetic substance formed by binding waste. About.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings. Hereinafter, a water absorber 1 as shown in FIGS. 1 to 4 will be described as a water absorber to which the present invention is applied and which has a function of a water absorber or sandbag for removing unnecessary water. The water absorbing body 1 having the function of a water absorbing body or sandbag for removing unnecessary water according to the present invention,
A water-permeable bag-like body 2 and a water-absorbing material 3 and a substance to be sucked 4 contained in the water-permeable bag-like body 2 are provided. More specifically, the water-absorbing body 1 according to the present invention having a function of a water-absorbing body for removing unnecessary water or a sandbag is in a dry state, as shown in the cross-sectional view of FIG. In the water-absorbing and swollen state, as shown in the sectional view of FIG. 2, the water-absorbing material 3b containing the modified polymer compound
And the substance 4 to be aspirated. Further, FIG. 3 is a cross-sectional view in a dry state of the water-absorbing body 1 according to the present invention in which the support 5 is included, and FIG.
It was shown to.

As the water-absorbing material 3 according to the present invention, a known material may be used, but a polymer compound containing (a) acrylonitrile and (b) at least one kind of styrene and / or conjugated diene may be used. Those mainly composed of a modified polymer compound into which an acidic group is introduced are preferred. As the polymer compound containing (a) acrylonitrile and (b) at least one kind of styrene and / or conjugated diene used in the present invention, the compound may contain about 5 to 80 mol% of an acrylonitrile unit in the compound.
, Preferably about 10 to 60 mol%, more preferably about 20 to 50 mol%. In order for the resulting modified polymer compound to function effectively as a water-absorbing polymer compound without substantially exhibiting water solubility when the polymer compound is treated with an acid, the content is about 5 mol%. The above is preferable. Further, the polymer compound is prevented from being hardened, and it is easy to pulverize the polymer compound into small pieces in the process of producing the water absorbent according to the present invention, while styrene and / or conjugated in the polymer compound are reduced. In order to avoid a decrease in the content of diene units and a decrease in the rate of introduction of acidic groups, and to exhibit water absorption, particularly water absorption for an aqueous electrolyte solution, the above content is about 80%.
It is preferably about mol% or less.

As the polymer compound used in the present invention, at least one of styrene and / or a conjugated diene (for example, butadiene or isoprene) as a constitutional unit other than acrylonitrile is contained in an amount of about 20 to 95 mol%, preferably about 20 to 95 mol%. Is about 40-85 mol%
And more preferably about 50 to 80 mol%. These styrene and / or conjugated diene constituent units are such that an acidic group is introduced into the compound by subjecting the polymer compound to an acid treatment, and the water absorbing property of the absorbent polymer compound to be purified, particularly with respect to the aqueous electrolyte solution, Necessary for improving water absorption.

The above-mentioned polymer compound used in the present invention may further contain another constituent unit as long as the above-mentioned acrylonitrile and styrene and / or conjugated diene are contained in predetermined amounts. These other constituent units are not particularly limited, but include, for example, maleic anhydride, itaconic anhydride, α-methylstyrene, acrylamide, methacrylamide, acrylic acid or acrylate, methacrylic acid or methacrylic acid ester, acetic acid Examples thereof include vinyl, vinyl chloride, ethylene, propylene, butylene, vinylpyrrolidone, and vinylpyridine. The acrylate and methacrylate preferably have about 1 to 10 carbon atoms, and may be saturated or unsaturated.

The weight average molecular weight (Mw) of the polymer compound used in the present invention is usually about 1,000 to 20,
About 1,000,000, preferably about 10,000 to 1.0
It is about 00,000. In order for the resulting modified polymer compound to effectively function as a water-absorbing polymer compound without substantially exhibiting water solubility when the polymer compound is treated with an acid, the weight average molecular weight (Mw) is about It is preferable that it is about 1,000 or more. In addition, the weight-average molecular weight (Mw) is about 2 to promote the acid treatment reaction for introducing an acidic group into the copolymer efficiently and to shorten the reaction time.
It is preferable that it is about 0,000,000 or less.

As the polymer compound used in the present invention, specifically, for example, ABS (acrylonitrile-
Butadiene-styrene) resin, SAN (styrene-acrylonitrile) resin, ASA (acrylonitrile-styrene-acrylamide) resin, ACS (acrylonitrile-chlorinated polyethylene-styrene) resin, AAS (acrylonitrile-acrylate-styrene) resin, NB
It is preferable to use a polymer material such as R (acrylonitrile-butadiene) rubber. These materials may be newly produced unused resin granules (virgin pellets), or may be used resins or waste materials molded for specific applications. As waste materials,
For example, there are waste products (semi-finished products) in the production process of resin raw materials and molded products, housings and various parts materials already used for electric appliances and automobiles, or tubes, hoses, various cushioning materials, and the like. The used resin refers to a resin recovered from the above waste materials. Waste materials in the present invention may be any waste materials from factories, stores, homes, etc., but rather than general waste from homes, etc., collected from factories, stores, etc. Waste materials are more preferable because many of them have relatively uniform compositions.

As the polymer compound used in the present invention, an alloy of the polymer material and another resin may be used, for example, a face dye, a stabilizer, a flame retardant, a plasticizer, a filler, and other auxiliary materials. A used resin or a waste material containing a known additive such as an agent may be used. Further, a mixture of used resin or waste material and unused material (virgin material) may be used. As the other resin that can be mixed with the polymer material in the alloy, a resin known per se may be used, but a resin that does not inhibit the acid treatment of the present invention is preferable. Specific examples of such a resin include polyphenylene ether, polycarbonate, polyphenylene sulfide, polyethylene terephthalate, polybutylene terephthalate, polyamide, and polyester. The mixing amount of these resins is approximately 60 to the above-mentioned polymer material in order to smoothly carry out the acid treatment.
It is preferable that the content is not more than about weight%.

The polymer compound used in the present invention is preferably made into small pieces for convenience in acid treatment for introducing an acidic group. The method for forming the small pieces is not particularly limited, but the following methods can be mentioned. For example, there is a method of sieving after crushing by a crusher. In particular, when the polymer compound contains a rubber component, it is preferable to pulverize after freezing. Further, there is also a method of heating and melting to pelletize (granulate) into fine beads. The size of the small piece of the polymer compound is preferably about 3.5 mesh or less. The surface area of the reactant increases to facilitate the acid treatment reaction, shorten the reaction time, and increase the acid group density in the formation of acidic groups by the acid treatment to improve water absorption (performance as a water-absorbing polymer compound). The above range is preferable for this purpose.

When the polymer compound of the present invention further contains an inorganic substance, an acid treatment for introducing an acidic group is promoted (the periphery of the inorganic pigment is easily treated with an acid, that is, the same inorganic compound is used during the reaction). Since the pigment is detached from the polymer compound and the acid easily penetrates into the surface of the polymer compound), the acid group density increases in the formation of the acid group by the acid treatment,
Water absorption is improved. Therefore, in the present invention, it is preferable that the polymer compound contains an inorganic substance.

As the inorganic substance, carbon black and / or titanium oxide is preferable. These carbon blacks and titanium oxides may be, for example, those generally used as a coloring agent, a reinforcing agent, or an electrical conductivity imparting agent for plastics. Specifically, as the carbon black, for example, those manufactured by any of the channel method, the furnace method, and the thermal method may be used, each may be used alone, or a plurality of them may be used in combination. . The average particle size is usually about 0.005 to 100.
It is about μm, preferably about 0.01 to 10 μm. The titanium oxide may be, for example, any of rutile-type, anatase-type, and ultrafine-particle titanium, each of which may be used alone, or two or more of them may be used in combination. The average particle size is usually about 0.01 to 50 μm.
m, preferably about 0.05 to 10 μm.
The content of the carbon black and titanium oxide contained in the polymer compound is about 0.01 to 20% by weight, preferably about 0.05% by weight, based on the dry weight of the polymer compound.
About 10% by weight.

Examples of the method for introducing an acidic group into the above-mentioned polymer compound include a method of treating the polymer compound with an acid. By converting the polymer compound to an acid, conversion to a water-absorbing polymer compound is performed. More specifically, part of acrylonitrile in the polymer compound becomes an amide or a carboxyl group or a salt thereof, while
An acidic group is introduced into styrene or a conjugated diene.

As the acid used in the acid treatment of the present invention, an inorganic acid capable of introducing an acidic group into styrene or a conjugated diene is preferable. Specific examples of the inorganic acid include sulfonating agents such as concentrated sulfuric acid, sulfuric anhydride, fuming sulfuric acid, and chlorosulfonic acid, and nitric acid, fuming nitric acid, phosphoric acid, phosphorus chloride, and phosphorus oxide. Among these, concentrated sulfuric acid,
Sulfuric anhydride, fuming sulfuric acid, and chlorosulfonic acid are preferred, and concentrated sulfuric acid of about 70% by weight or more is more preferred. These inorganic acids may be used alone or in combination of two or more. When used in combination, they may be mixed or added sequentially. For example, by first treating the above-mentioned polymer compound with concentrated sulfuric acid and then adding sulfuric anhydride, it is possible to obtain a water-absorbing polymer compound which is water-based and stable in shape. This is because the nitrile portion in the polymer compound is primarily subjected to a hydrolysis reaction by the treatment with concentrated sulfuric acid, and then the styrene or conjugated diene portion is forcibly sulfone-crosslinked by treatment with sulfuric anhydride. This is because a water-absorbing polymer compound having a high degree of crosslinking can be obtained. Therefore, the above acid treatment is one of the preferred embodiments of the acid treatment in the present invention.

The amount (prepared amount) of the inorganic acid used in the reaction is about 1 to 500 times, preferably about 10 to 200 times the weight of the above-mentioned polymer compound. By increasing the rate of introduction of an acidic group into styrene or a conjugated diene or the rate of hydrolysis of an acrylonitrile group, the production of an acidic group is promoted, and in order to impart water absorption, the amount of the inorganic acid charged is controlled by the above-mentioned polymer. About 1 or more times the weight of the compound is preferred. From the viewpoint of economy and workability, the amount of the inorganic acid to be charged is preferably about 500 times or less based on the weight of the polymer compound.

The acid treatment in the present invention may be performed in an inorganic acid, or may be performed in a system using an organic solvent. Examples of the organic solvent that can be used in the acid treatment include aliphatic halogenated hydrocarbons having about 1 to 2 carbon atoms (preferably 1,2-dichloroethane, chloroform, dichloromethane, 1,1-dichloroethane, and the like), and aliphatic cyclic hydrocarbons. Hydrocarbons (preferably cyclohexane, methylcyclohexane, cyclopentane, etc.), nitromethane, nitrobenzene, sulfur dioxide, paraffinic hydrocarbons (preferably having about 1 to 7 carbon atoms), acetonitrile, carbon disulfide, tetrahydrofuran, tetrahydrofuran Pyran, 1,
2-dimethoxyethane, acetone, methyl ethyl ketone, thiophene and the like. Preferably, it has 1 carbon atom
About 2 aliphatic halogenated hydrocarbons, aliphatic cyclic hydrocarbons, nitromethane, nitrobenzene and sulfur dioxide. These solvents may be used alone or in combination of two or more. In the mixed solvent, the mixing ratio is not particularly limited. The amount of these organic solvents is preferably less than about 200 times the weight of the polymer compound. The above range is preferable from the viewpoint of increasing the reaction rate of the acid treatment and from the economical viewpoint.

In the above acid treatment, a Lewis base may be used if desired. Examples of the Lewis base include alkyl phosphates (eg, triethyl phosphate or trimethyl phosphate), dioxane, acetic anhydride, ethyl acetate, ethyl palmitate, and the like.
Examples include diethyl ether and thioxane. In addition,
The inorganic acid or organic solvent once used in the acid treatment may be recovered and used as it is after the reaction, or may be recovered by a method such as extraction or distillation and used again for the reaction.

In the present invention, by subjecting the above-mentioned polymer compound to the above-mentioned acid treatment, an acidic group is introduced into the styrene and / or conjugated diene unit, while a nitrile group is introduced into the acrylonitrile unit by a hydrolysis reaction. By being converted into an amide group or a carboxyl group, it is converted into a modified polymer compound having water absorption (water-absorbing polymer compound).

By the above acid treatment, styrene or conjugated die
As an acidic group (ionic group) introduced into the unit
Is, for example, the formula -SO₃M (where M is a hydrogen atom or
For example, cations such as metals such as sodium and potassium
Represent. A) a sulfo group which may form a salt represented by the formula:
-PO (OM₁) (OM₂) Or the formula -CH₂PO
(OM₁) (OM₂) (Where M₁And M₂Are the same
One or different, as defined for M above. Formed salt) represented
An optional substituent, -NO₂To mention
it can. In addition, the formula -OSO₃M (where M is the aforementioned
A sulfate group which may form a salt represented by
Formula -OPO (OM₁) (OM₂) (Where M ₁And M₂Is
The same or different, and is the same as M above. )
A phospho group which may form a salt of the formula
₃(Where M₃Is equivalent to M. ) To form a salt represented by
An optionally substituted hydroxyl group, formula -COOM₄(Where M₄Is M
And the same meaning. Carbo which may form a salt represented by)
Xyl groups and the like. Among these acidic groups,
A ruho group or a salt thereof is preferred. One of these acidic groups
May be introduced into the polymer compound, or two
Or more may be introduced into the polymer compound.

However, in order to satisfy the performance as a water-absorbing polymer compound, the amount of the acidic group contained in the modified polymer compound should be about 5 to 95 mol% based on all monomer units.
About 10 mol%, preferably about 10 to 70 mol%. In order that the modified polymer compound does not substantially exhibit water solubility and effectively exhibits water absorption, the amount of the acidic group is preferably about 95 mol% or less based on all monomer units. Further, in order to effectively maintain the effect of water absorption, the amount of the acidic group,
About 5 mol% or more based on all monomer units is preferred.

When the acidic group in the modified polymer compound is a sulfo group, the copolymer is directly mixed with a sulfonating agent known per se such as concentrated sulfuric acid, sulfuric anhydride, fuming sulfuric acid and chlorosulfonic acid. The sulfo group is introduced by reacting or reacting the polymer compound with a sulfonating agent in a state of being dissolved or dispersed in an organic solvent, and subsequently the sulfo group is converted into a basic substance (for example, sodium hydroxide or Neutralization with potassium hydroxide or the like allows conversion to a sulfonate. Further, when the acidic group in the modified polymer compound is a —PO (OH) ₂ group, phosphorus trioxide is added to a solvent, and the resultant is further hydrolyzed to first form a —PO (OH) ₂ group. After being introduced, the salt can be obtained by reacting with a basic compound (eg, sodium hydroxide or potassium hydroxide).
The acid groups of the modified polymer compound is _-CH 2 PO (O
H) In the case of _two groups or a salt thereof, the acidic group can be introduced into the polymer compound by a method known per se. The acidic group in the modified polymer compound is -N
When the compound is an O ₂ group, the acidic group of the polymer compound can be introduced by reacting the mixed solution of sulfuric acid and nitric acid with the polymer compound.

As a method for introducing a sulfate group which may form a salt, preferably, the above-mentioned polymer compound having an unsaturated bond is reacted with a high-temperature sulfuric acid aqueous solution to first introduce a sulfate group, and thereafter, By reacting with a basic compound (eg, sodium hydroxide or potassium hydroxide), a sulfate can be obtained. As a method for introducing a carboxyl group which may form a salt, preferably, n-butyllithium is added to the polymer compound having an aromatic ring, and then the carboxyl group is first reacted with dry ice to form a carboxyl group. A group can be introduced, and then a carboxylic acid salt can be obtained by reacting with a basic compound (for example, sodium hydroxide or potassium hydroxide).

--OPO (OH) _{2 which} may form a salt
As a method for introducing a group, preferably, -OPO (OH) ₂ group is first introduced by adding phosphorus trioxide to the above-mentioned polymer compound having an unsaturated bond, followed by hydrolysis, and thereafter, a basic compound ( (E.g., sodium hydroxide or potassium hydroxide) to give the same salt. As a method for introducing a hydroxyl group which may form a salt, preferably, the above-described polymer compound having an unsaturated bond is reacted with an aqueous sulfuric acid solution to firstly introduce a hydroxyl group, and thereafter, a basic compound ( (E.g., sodium hydroxide or potassium hydroxide) to give the same salt.

The acid treatment reaction in the present invention is preferably carried out under the following conditions in order to introduce the above-mentioned predetermined amount of acidic group into the copolymer. The reaction temperature varies greatly depending on whether or not an organic solvent is used.
The temperature is about 200 ° C, preferably about 30 to 120 ° C. To increase the reaction rate to some extent from the viewpoint of practicality, and to obtain a modified polymer compound as a water-absorbing polymer compound having good performance, the reaction temperature is about 0 ° C.
Preferably, it is at least about. The reaction temperature is preferably about 200 ° C. or less in order to prevent the molecular chain of the polymer compound from being broken by thermal decomposition and the modified polymer compound from being dissolved in water.
The reaction time of the acid treatment varies greatly depending on the reaction temperature and cannot be unconditionally determined, but is generally about 1 minute to 40 hours, preferably about 5 minutes to 2 hours. The above range is preferable in order to allow the reaction to proceed sufficiently and increase production efficiency.

In the present invention, the reaction product obtained as described above may be subjected to a post-treatment known per se. Specifically, it is preferable to wash the reactants. As a method for washing the reaction product, the reaction solution is directly added to a large amount of water or a basic aqueous solution, or the reaction product is first filtered from the same reaction system with a filter or the like, and the reaction product is added with a large amount of water or a basic solution. For example, a method of pouring into an aqueous solution may be mentioned. At this time,
The nitrile group in the polymer compound is converted into an amide group or a carboxyl group and / or a salt thereof. Incidentally, as the basic substance used in the basic aqueous solution,
Examples thereof include compounds such as oxides, hydroxides, carbonates, acetates, sulfates, and phosphates of alkali metals (such as sodium, lithium, and potassium) and alkaline earth metals (such as magnesium and calcium). However, in order to improve the absorption effect (particularly the absorption effect on an aqueous electrolyte solution) of the modified polymer compound exhibiting water absorption and the deodorizing effect of ammonia gas and the like, it is desirable to perform only water washing without neutralization.

The reaction product obtained as described above is in the form of a gel. After that, the desired water-absorbing polymer compound can be obtained by drying with sunlight, heating, reduced pressure, centrifugation, pressing and the like. By the treatment method described above, a nitrile group and the same hydrolyzate (amide group or carboxyl group and / or a salt thereof) and a water-absorbing polymer compound having an acidic group can be obtained. It has an unreacted nitrile group to improve water insolubility and gel strength, and has a higher water absorption (particularly with respect to the aqueous electrolyte solution) due to a hydrolyzate of the nitrile group and an acidic group. Will be done.

In the present invention, the above-mentioned acid-treated product is not subjected to post-treatment and drying, and after the above-mentioned acid treatment, if desired, the above-mentioned post-treatment is carried out. By subjecting the group to a salt-forming reaction, a salt-forming modified polymer compound having antibacterial properties can be produced. In the present invention, a water absorber in which the water-absorbing material 3 contains such a salt-forming modified polymer compound is one of preferred embodiments. Thus, a salt, preferably silver,
By forming a salt with copper, zinc, or the like, the water absorbent according to the present invention can be provided with antibacterial properties. By imparting the antibacterial property, adhesion and propagation of microorganisms due to repeated use of the water absorbent, discoloration of the water absorbent or an unpleasant odor caused by the water absorbent can be suppressed.

In order to form a salt at the acidic group of the above-mentioned acid-treated product, a post-treatment known per se may be carried out, if desired, followed by a method known per se. As a preferred embodiment, the reaction product of the acid treatment reaction system is first filtered with a filter or the like, washed with a large amount of water, and then, for example, a method of adding a metal salt of silver, copper or zinc, for example, silver, For example, a method of adding the above-mentioned reaction product liquid system as it is to an aqueous solution of a copper or zinc metal salt may be mentioned.

In the present invention, an organic or inorganic salt or hydroxide other than the above-mentioned metal salts can be used in combination. As these salts or hydroxides,
Ammonium, alkali metals (eg, sodium, lithium, potassium, etc.), alkaline earth metals (eg, magnesium, calcium, etc.) and other metals (eg, aluminum, titanium, germanium, tin, iron, etc.)
Such as hydroxide, carbonate, acetate, sulfate, phosphate and organic acid salt.

Further, known antibacterial materials can be appropriately used in combination. Examples of the known antibacterial material include an inorganic antibacterial material, an organic natural product extraction-based antibacterial material, an organic aliphatic compound antibacterial material, and an organic aromatic compound antibacterial material. Examples of the inorganic antibacterial material include chlorine compounds represented by sodium hypochlorite, peroxides represented by hydrogen peroxide, boric acid, boric compounds represented by sodium borate, copper compounds represented by copper sulfate, and sulfuric acid. Zinc, zinc compounds represented by zinc chloride, sulfur, lime polysulfide, sulfur compounds represented by hydrated sulfur, calcium compounds represented by calcium oxide, silver thiosulfite complex salts, silver compounds represented by silver nitrate And others, iodine, sodium silicofluoride and the like. Examples of the organic natural product extraction-based antibacterial material include hinokitiol, Moso bamboo extract, and creosote oil.

Examples of the organic aliphatic compound antibacterial material include an organic tin compound represented by tributyltin oxide, a cyclopentane derivative represented by copper naphthenate, a halogen compound represented by methyl bromide, ethyl alcohol, isopropyl alcohol A monohydric alcohol compound represented by, a dihydric alcohol compound represented by 2-bromo-2-nitro-1,3-propanediol, a formaldehyde, a saturated aldehyde represented by glutaraldehyde, sorbic acid, and potassium sorbate. Carboxylic acid compounds, ether compounds such as ethylene oxide and propion oxide, lactone compounds such as betaoxypropiolactone, and quaternary ammonium compounds such as trimethoxysilylpropyldimethyloctadecyl ammonium chloride. Salt compounds, amino acid derivatives represented by di (octylaminoethyl) glycine hydrochloride, sulfonic acid compounds represented by sodium lauryl sulfate, hydroxamic acid compounds represented by bisdecalinium acetate, and chlorinated isocyanuric acids Cyanuric acid compound, cyanic acid compound represented by methyl isocyanate, sulfone compound represented by bis (trichloromethyl) sulfone, guanidine compound represented by polyhexamethylene biguanidine hydrochloride, 1,3-dichloromethane
Hydantoin compounds represented by -5,5-dimethylhydantoin, dithiol compounds represented by 5-oxy-3,4-dichloro-1,2-dithiol, arsine compounds represented by iron methylarsinate, aluminum tris ( Phosphoric acid ester compounds represented by ethyl phosphate),
And thiocarbamide compounds.

The organic aromatic compound antibacterial materials include carbonate compounds represented by bis (4-nitrophenyl) carbonate, quaternary ammonium salt compounds represented by benzalkonium chloride and benzethonium chloride,
Monoamine compounds represented by 2,6-dichloro-4-nitroaniline, diamine compounds represented by potassium nitroethylbenzylethylenediamine, N-nitroso-N-
Hydroxylamine compounds represented by cyclohexylhydroxylamine aluminum; anilide compounds represented by dihydromethyloxatin carboxanilide dioxide; imidazole compounds represented by 2- (4-thiazolyl) benzimidazole; 5-methyl-1, 2,4-
Benzothiazole compounds represented by triazolo-3,4-benzothiazole, triazine compounds represented by 2,4-dichloro-6-chloroanilino-1,3,5-triazine, chlorhexidine hydrochloride, chlorhexidine gluconate Guanidine compounds, pyridine compounds represented by cetylpyridinium chloride, pyrimidine compounds represented by dimethylpyrazolylhydroxyphenylpyrimidine, halogenobenzene compounds represented by 2,2′-methylenebis-3,4,6-trichlorophenol,
Benzenesulfonic acid compounds represented by copper hydroxynonylbenzenesulfonate, benzenecarboxylic acid compounds represented by benzoic acid, mercaptocarboxylic acid compounds represented by thimerosal, hydroxycarboxylic acid compounds represented by ethyl oxybenzoate, phenol , Monohydric phenol compounds represented by cresol, dihydric phenol compounds represented by resorcinol, phenyl ether compounds represented by phenoxyethanol, phenol ester compounds represented by pentachlorophenyl laurate, represented by triphenyltin oxide Phenyl compounds, biphenyl compounds typified by diphenyl, monovalent naphthols typified by β-naphthol, naphthalene compounds typified by monochloronaphthalene, dodecylisoquinolyl Isoquinoline compound represented by um bromide, other nitrile compounds, isothiazole compounds, thiadiazole compounds, halogenophenol compounds, pyrrole compounds, quinone compounds, quinoline compounds, organic phosphate compound, and the like.

The reaction product obtained as described above is in the form of a gel, and is then dried by sunlight, heating, depressurizing, centrifuging, pressing or the like to obtain a salt-forming modified polymer having water absorption and antibacterial properties. A compound can be obtained.

In the present invention, a material having a simple water absorbing function may be used as the water absorbing material. Known water absorbing materials can be used for these materials. These materials include gel crosslinked products such as polyacrylate, polyvinyl alcohol, polyacrylamide, polyoxyethylene, polyamino acid, poly (N-alkylvinylacetamide),
Alternatively, a gel cross-linked product of a copolymer mainly composed of the unit, and a modified product obtained by cross-linking and grafting with a hydrophilic polymer including polysaccharides such as starch and cellulose are exemplified. However, with the aim of effectively using a used resin or waste material of a polymer compound containing acrylonitrile and styrene or conjugated diene as a material having a higher added value, the modified polymer compound and, if desired, the salt formation modified It is preferable to use a molecular compound and a known water-absorbing material in combination.

The present invention is characterized in that the substance to be sucked 4 is contained in addition to the water-absorbing material 3 in the water-permeable bag. It is preferable to use a magnetic material having magnetism as the substance to be attracted 4. By including the magnetic material in this manner, as shown in FIGS. 5 and 6, for example, the water absorbing body 1 is magnetically sucked by using the magnetic suction means 6 and is moved and transported by a conveyor, a crane, or the like. Can be made possible. As a result, there is an advantage in that transportation to a place that is dangerous for human transport and rapid transportation in an emergency are possible. In addition, there is an advantage that it is possible to identify the water absorbing body by this magnetism.

Examples of the magnetic material include those having ferrimagnetism, ferromagnetism, or parasitic magnetism. Examples of the ferromagnetic material include iron, nickel, cobalt, or an alloy thereof, or an alloy containing them, a transition metal or an alloy thereof, and an alloy containing a rare earth element. Examples of the ferrimagnetic material include magnetite, maghemite, hematite, manganese zinc ferrite, manganese nickel ferrite, barium ferrite, and strontium ferrite. These may be those made of natural minerals, those made of waste, and those formed by binding waste. These can be obtained from an inductor element of a used electric device or a deflection yoke of a speaker or a television. These members are difficult to process in the dismantling process of the electronic device, and are useful from the viewpoint of effective utilization. Techniques for obtaining ferrite using used dry batteries have also been developed, and these techniques can be effectively applied to the present invention from the above viewpoints. These magnetic substances have a specific gravity greater than that of a general inorganic material, and can increase the weight of the water absorbing body, and have the effect of relatively increasing the weight of the water absorbing body even in the water absorbing state.

As a material of the water-permeable bag 2 of the present invention, a cloth of natural fibers or synthetic fibers is used. Examples of the natural fiber include cotton, hemp, and silk.
Examples of the synthetic fiber include polyamide, polyimide, polyester, polyethylene, and polypropylene. It is preferable that these fibers are singly or mixed and knitted or woven into a cloth. However, in some cases, it may be a nonwoven fabric. Further, depending on the case, it may be one in which pores penetrating the front and back of the film-like body are formed.

In the present invention, in the water-permeable bag-like body,
A support 5 may be included in addition to the water absorbing material 3 and the substance to be sucked 4, and such a water absorbing body is one of preferred embodiments according to the present invention. The shape or material of the support of the present invention is not particularly limited as long as the support can support the modified polymer compound. Here, the term “support” means that the modified polymer compound is attached or impregnated to prevent the modified polymer compound from being extremely inclined in the water-permeable bag 2. As the support, specifically, a flexible network is preferable. A cloth made of natural fibers or synthetic fibers is used as the flexible network. As the material, the same material as the material of the above-mentioned water-permeable bag-like body can be used. That is, examples of the natural fiber include cotton, hemp, and silk. As synthetic fibers,
For example, polyamide, polyimide, polyester, polyethylene or polypropylene can be exemplified. It is preferable that these fibers are singly or mixed and knitted or woven into a cloth. However, in some cases,
Nonwoven fabric or paper may be used. Further, depending on the case, it may be one in which pores penetrating the front and back of the film-like body are formed.

In this case, the occupancy of the through-holes in the support, preferably the flexible net, is preferably higher than that in the water-permeable bag 2, whereby the water absorbing property is improved. By adhering or impregnating the modified polymer compound of the above to the support, the water-absorbing modified polymer compound can be fixed to the support. Thereby, even if the water-absorbing body according to the present invention is used repeatedly by absorbing water, drying after use, and then reusing it, the water-absorbing modified polymer compound becomes out of shape such as being biased inside the water-absorbing body. Can be prevented, and the number of times of repeated use can be increased.

As a method of fixing the support of the present invention by adhering or impregnating the water-absorbing modified high molecular compound, the support may be dispersed in water by swelling the water-absorbing modified high-molecular compound. The method of coating and drying the system can be mentioned. In addition, as the method, a method in which a dispersion of the water-absorbing modified polymer in a non-swelling state in an organic liquid is applied to the support and dried. As a result, the operation of coating and drying can be simplified and the energy used can be reduced, so that it is suitably used in the present invention. Further, as the method, a method in which water or an organic liquid is contained in the support, and the water-absorbing modified polymer compound in a dry state is adhered to the support and dried. The sheet-like body fixed by adhering or impregnating the above-mentioned water-absorbing modified polymer compound to the support by the method as described above can be obtained by performing a compression operation using a static pressure press or a roller. In this case, the heating can be performed at room temperature, but it is more effective to perform the heating at room temperature or higher.

In the present invention, a solid having a specific gravity of 1 or more can be further present in the water-permeable bag. In this way, when the water-absorbing body of the present invention is used as a sandbag, there is an advantage that the water-absorbing body is less likely to be washed away by water or the like, particularly in an initial stage of installation. Therefore, such a water absorbing body is one of preferred embodiments according to the present invention.
Examples of the solid having a specific gravity of 1 or more according to the present invention include those formed of natural minerals, those formed of waste, and those formed by binding waste. Examples of these materials include metals, ceramics, glass, and materials in which these are bonded to each other. For such binding, a polymer material having a specific gravity of 1 or less can be used. The polymer material used for the binding is not particularly limited. For example, polystyrene, styrene-propylene copolymer, styrene-butadiene copolymer, styrene-vinyl chloride copolymer, styrene-vinyl acetate copolymer, styrene- Acrylic acid ester copolymer, styrene-methacrylic acid ester copolymer, polyester resin, polyvinyl alcohol, water-soluble resin such as casein or sodium polyacrylate, alcohol-soluble resin such as copolymerized nylon or methoxymethylated nylon, polyurethane, Curable resins that form a three-dimensional network structure, such as melamine resin or epoxy resin, and the like can be given.

In the present invention, the water-permeable bag may further contain a surfactant. In this way, by allowing the surfactant to coexist with the modified polymer compound, it is possible to improve the wetting of the water absorbent,
As a result, there is an advantage that the water absorbing speed of the water absorbing body is increased. Therefore, such a water absorbing body is one of preferred embodiments according to the present invention.

The surfactant used in the present invention includes:
Anionic surfactants, cationic surfactants, nonionic surfactants, and amphoteric surfactants can be used as appropriate. Examples of anionic surfactants include fatty acid salts, higher alcohol sulfates, liquid fatty oil sulfates, sulfates of aliphatic amines and aliphatic amides, fatty alcohol phosphates, and sulfonates of dibasic fatty acid esters. , Fatty acid amide sulfonate, formalin condensed naphthalene sulfonate, and the like. Examples of the cationic surfactant include an aliphatic amine salt, a quaternary ammonium salt, and an alkylpyridinium salt. Examples of the nonionic surfactant include polyoxyethylene alkyl ether, polyoxyethylene alkyl phenol ether, polyoxyethylene alkyl ester, sorbitan alkyl ester, and polyoxyethylene sorbitan alkyl ester. In the surfactant used in the present invention, an anionic surfactant and / or a nonionic surfactant are preferably used. This is because a salt with the acidic group contained in the modified polymer compound is not formed, and as a result, a decrease in the water absorption of the modified polymer compound can be further prevented.

[0051]

EXAMPLES Here, a sample was actually prepared as an example of a water-absorbing material according to the present invention, and a comparative sample and an evaluation thereof were performed. However, the present invention is not limited to this. [Preparation of modified polymer compound] Concentrated sulfuric acid (96% by weight) 30
One part by weight of the ABS resin waste material was added to the parts by weight, and reacted at 80 ° C. for 20 minutes. In addition, as ABS resin waste material, 8
mm Used for the black part of the cassette tape guard panel,
A 16-32 mesh resin obtained by pulverizing a resin containing 52 mol% of styrene, 28 mol% of acrylonitrile, 20 mol% of butadiene, and 2 wt% of carbon black with a freezing shredder. Was used. After completion of the reaction, the solid matter in the system was filtered with a glass filter, washed with water, neutralized with 50 parts by weight of 1N sodium hydroxide solution, further washed with sufficient water, and the pH of the filtrate was adjusted to 8 or less. Take it out when it becomes,
Drying was performed at 105 ° C. for 2 hours in a circulating drier. By this operation, a black solid was obtained. From the elemental analysis result of sulfur, it was confirmed that the sulfo group in this solid was 33 mol% in all monomer units. The sodium content was almost equimolar to the sulfo group (1.1). The above black solid is pulverized to an average particle size of 0.8 mm.
Met.

[Preparation of Water Absorbent Body] A ferrite core (manganese zinc ferrite) of a flyback transformer, which is generated when a used television is dismantled and is difficult to dispose of, is used as the magnetic material according to the present invention. Place the magnetic body at equal intervals in a plane between two thick cotton cloths, pass a seam between them,
By sewing the above-mentioned two cotton cloths, a cotton cloth in which the above-mentioned ferrite core was sewn was produced. Further, a bag was prepared by combining one piece of cotton cloth, and the water-absorbing modified polymer compound prepared as described above was put therein and sealed.

[0053]

The water absorbent according to the present invention has a higher water absorption and a higher water absorption rate than a conventional water absorbent or a water absorbent having the function of a sandbag, which is used for removing unnecessary water remaining in water or flooding. It can sufficiently cope with a case where a large amount of water needs to be absorbed or a case where the water must be quickly absorbed. It can be applied not only to pure water, but also to water containing electrolytes such as seawater, sewage, and muddy water. it can. In addition, the present invention has a small weight and volume during transportation, and can be transported in large quantities and quickly without human power. Provides a water-absorbent body that fills, and is particularly useful as a sandbag. further,
The water absorber according to the present invention has an advantage that it can be used repeatedly. Further, since the salt-forming modified polymer compound contained in the water-absorbent material according to the present invention has antibacterial properties, adhesion and propagation of microorganisms caused by repeated use, discoloration of the water-absorbent material caused by the repeated propagation, or There is also an advantage that an unpleasant odor can be suppressed.

The water-absorbing body according to the present invention can be produced by using a used resin or a waste material. If necessary, a solid material having a specific gravity of 1 or more is hardly treated in the dismantling process of electronic equipment. It can be made by
It also has the advantage that it can contribute to the global environment.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a water absorbent according to the present invention when it is dried.

FIG. 2 is a cross-sectional view of the water-absorbent body according to the present invention when it swells by water absorption.

FIG. 3 shows a cross-sectional view of a water-absorbent body containing a support according to the present invention when it is dried.

FIG. 4 is a cross-sectional view of the water-absorbing body according to the present invention containing a support when the water-absorbing body swells.

FIG. 5 is a diagram showing a transport mode when magnetically sucking and transporting the water-absorbing body according to the present invention.

FIG. 6 is a view showing a transport mode when magnetically sucking and transporting the water-absorbing body according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Water-absorbing body 2 Water-permeable bag-like body 3 Water-absorbing material 4 Magnetic body 5 Support 6 Magnetic suction means

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Tsutomu Noguchi 6-7-35 Kita-Shinagawa, Shinagawa-ku, Tokyo F-term in Sony Corporation (reference) 2D018 AA06 4G066 AC12A AC14A AE20A BA12 CA43 DA20 EA20 FA11 GA21 4J100 AB02Q AM02P AS01R AS02R AS03R BA56H CA03 CA05 CA31 DA37 HA08 HA61 HB52 JA67

Claims (34)

[Claims] 1. A water-absorbing body, wherein the water-absorbing material and the substance to be sucked are contained in a water-permeable bag. 2. The water-absorbing body according to claim 1, wherein the substance to be attracted is a magnetic substance. 3. The water absorbing body according to claim 2, wherein the magnetic substance is made of waste. 4. The water-absorbing body according to claim 2, wherein the magnetic body is formed by binding waste. 5. A polymer material containing (a) acrylonitrile and (b) at least one of styrene and / or conjugated diene, wherein the water-absorbing material is mainly a modified polymer compound in which an acidic group is introduced. The water absorbing body according to claim 1, wherein the water absorbing body is used. 6. The water absorbent according to claim 1, wherein the support is contained in a water-permeable bag. 7. The water absorbent according to claim 6, wherein the support is a flexible network. 8. A modified polymer compound in which an acidic group is introduced into a polymer compound containing (a) acrylonitrile and (b) at least one of styrene and / or conjugated diene as a water-absorbing material. Thing,
The water absorbing body according to claim 6, wherein the water absorbing material is supported by a support. 9. The polymer compound comprising (a) acrylonitrile and (b) at least one of styrene and / or conjugated diene obtained from waste material. The water absorbent according to the above. 10. The water-permeable bag according to claim 1, further comprising a solid having a specific gravity of 1 or more.
The water absorbent according to the above. 11. The water absorbent according to claim 10, wherein the solid having a specific gravity of 1 or more is made of a natural mineral. 12. The water absorber according to claim 10, wherein the solid having a specific gravity of 1 or more is made of waste. 13. The water absorbent according to claim 10, wherein the solid having a specific gravity of 1 or more is formed by binding waste. 14. An acidic group introduced into a polymer compound containing (a) acrylonitrile and (b) at least one of styrene and / or conjugated diene as a water-absorbing material, wherein the acidic group forms a salt with a metal. The water-absorbent material according to claim 5, wherein the water-absorbent material comprises a salt-forming modified polymer compound. 15. The water absorbent according to claim 14, wherein the metal is one or more metals selected from the group consisting of zinc, copper, and silver. 16. The water absorbent according to claim 5, wherein the surfactant is contained in the water-permeable bag. 17. The water absorbent according to claim 16, wherein the surfactant is an anionic surfactant and / or a nonionic surfactant. 18. A method for producing a water-absorbing body, comprising filling a water-absorbing material and a substance to be sucked into a water-permeable bag. 19. The method according to claim 18, wherein the substance to be attracted is a magnetic substance. 20. The method according to claim 19, wherein the magnetic material is a waste. 21. The method according to claim 19, wherein the magnetic material is formed by binding waste. 22. A water-absorbing material mainly comprising a modified polymer compound in which an acidic group is introduced into a polymer compound containing (a) acrylonitrile and (b) at least one of styrene and / or conjugated diene. The method for producing a water absorbent according to claim 18, wherein the method comprises: 23. The method for producing a water absorbent according to claim 18, further comprising filling the support into a water-permeable bag. 24. The water absorbent according to claim 23, wherein the support is a flexible network. 25. A water-absorbing material mainly comprising a modified polymer compound in which an acidic group is introduced into a polymer compound containing (a) acrylonitrile and (b) at least one kind of styrene and / or conjugated diene. Thing,
The water absorbing body according to claim 23, wherein the water absorbing material is supported by a support. 26. The polymer compound according to claim 22, wherein the polymer compound contains (a) acrylonitrile obtained from waste material and (b) at least one kind of styrene and / or conjugated diene. The method for producing a water absorbent according to the above. 27. The method for producing a water absorbent according to claim 18, further comprising filling a solid having a specific gravity of 1 or more into the water-permeable bag. 28. The method according to claim 27, wherein the solid having a specific gravity of 1 or more is made of a natural mineral. 29. The method according to claim 27, wherein the solid having a specific gravity of 1 or more is made of waste. 30. The method according to claim 27, wherein the solid having a specific gravity of 1 or more is formed by binding waste. 31. An acidic group introduced into a polymer compound containing (a) acrylonitrile and (b) at least one of styrene and / or conjugated diene as a water-absorbing material, wherein the acidic group forms a salt with a metal. 23. The method for producing a water absorbent according to claim 22, comprising a salt-forming modified polymer compound. 32. The method according to claim 31, wherein the metal is at least one metal selected from the group consisting of zinc, copper, and silver. 33. The method for producing a water absorbent according to claim 22, further comprising filling a surfactant into the water-permeable bag. 34. The method for producing a water absorbent according to claim 33, wherein the surfactant is an anionic surfactant and / or a nonionic surfactant.