JP2000189499A - Deodorizing agent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently deodorize odorous nitrogen components for a long time by using a deodorizing agent for a urinal and the like. SOLUTION: A solid deodorizing, agent which contains fumaric acid that has considerably low solubility and small dissolution rate in water, is put to a urinal in men's lavatory to deodorize it. The deodorizing agent has fumaric acid in solid state, and is useful to deodorize ammonia and amines. It is also possible to use a tablet, which contains 70 wt.% fumaric acid, as the deodorizing agent.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorizing agent useful for deodorizing odor components for a long period of time in toilets and the like.

[0002]

2. Description of the Related Art Sewage treatment plants, sludge treatment plants, human waste treatment plants,
Granulated activated carbon, to remove malodorous gas from livestock facilities, garbage disposal sites, etc.
Honeycomb activated carbon is used. Further, in order to improve the deodorizing efficiency, an activated carbon in which a chemical such as an acid or an alkali is added to the activated carbon, for example, an activated carbon honeycomb carrying citric acid or an alkali metal citrate (Japanese Patent Laid-Open No. 59-1519)
No. 63), a honeycomb impregnated with an acid or an alkali such as sulfuric acid (JP-A-52-63882), a honeycomb supporting an alkali metal iodide and phosphoric acid (see JP-A-6-126166), etc. Is also used.
However, when these activated carbons are used for deodorizing toilets, particularly for deodorizing urinals in men's toilets, the deodorizing ability of activated carbon is greatly impaired by splashing.

On the other hand, in male urinals, an aromatic deodorant is used. However, even with a deodorant,
It does not deodorize and remove ammonia and amines.
In particular, since the deodorant is dissolved by urine, ammonia or amine odor cannot be removed with high efficiency over a long period of time.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a solid deodorizing agent which is useful for deodorizing over a long period of time.

Another object of the present invention is to provide a deodorizing agent which is useful for efficiently deodorizing nitrogen-containing odor components over a long period of time even when used in urinals for men.

[0006]

The inventors of the present invention have noticed that the solubility and dissolution rate of fumaric acid in water are extremely low, and as a result of intensive studies to solve the above-mentioned problems, a solid preparation containing fumaric acid was found. It has been found that, when placed in a urinal of a men's toilet, nitrogen-containing odor components such as ammonia and amines can be efficiently deodorized over a long period of time, and the present invention has been completed.

That is, the deodorizing agent of the present invention is composed of a solid agent containing fumaric acid. This deodorizing agent contains fumaric acid in a solid form and deodorizes ammonia and amines, in particular, puts it in the urinal of a men's toilet, or puts it in a tank of a simple toilet to deodorize it. Useful for treatment and / or sterilization. The deodorizing agent may be in the form of a tablet. The content of fumaric acid is usually 70% by weight or more.

In the present specification, unless otherwise specified, the term “fumaric acid” is used to mean not only fumaric acid but also “salt of fumaric acid”.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As described above, fumaric acid, which is a food additive and has high safety, has low solubility in water and a low dissolution rate. For example, the solubility of fumaric acid is 0.2-0.5 g (temperature 10-2
0 ° C), 0.8 g (temperature 30 ° C), 1.07 g (temperature 4
0 ° C.), 1.6 g (temperature 50 ° C.), 2.4 g (temperature 60
° C), 5.25 g (temperature 80 ° C), 9.8 g (temperature 10 ° C)
0 ° C). Therefore, even if a solid deodorizing agent containing fumaric acid is used for deodorizing a toilet bowl, it can be efficiently deodorized while maintaining a solid form for a long period of time.

The fumaric acid used in the present invention may be fumaric acid alone or a mixture of fumaric acid and a fumarate salt (eg, an alkali monometal fumarate salt such as sodium fumarate). Good.

Further, fumaric acid may be contained in combination with another organic acid (eg, oxycarboxylic acid (tartaric acid, citric acid, malic acid, etc.), ascorbic acid, etc.). The ratio between these organic acids and fumaric acid can be selected according to the dissolution property of the solid deodorizing agent and the like, and usually, organic acid / fumaric acid (weight ratio) = 0.01 / 1 to 1/1, preferably, It is about 0.1 / 1 to 1/1.

The deodorizing agent containing fumaric acid may be in a solid form. Usually, fumaric acid is in a solid form, for example, in the form of a powder (for example, a powder having a size of about 20 to 200 mesh). It is contained in. The form of the deodorizing treatment agent containing solid fumaric acid may be, for example, granules, molded articles (tablets, granules, pellets, etc.), and the average diameter of the granules, granules and pellets is, for example, 0.1-100m
m, preferably about 0.5 to 50 mm.
Since fumaric acid is excellent in tableting properties, it is usually preferable to use it in the form of a molded article (compression molded article such as a tablet).

[0013] Molded product of fumaric acid (eg, tablet, etc.)
Can be prepared using conventional components as necessary. Examples of the components for forming the molded body include sugars (eg, sugar alcohols such as mannitol, xylitol, erythritol, disaccharides such as lactose, sucrose, sucrose ester, corn starch, etc.), crystalline cellulose, talc, light Excipients such as silicic anhydride, magnesium carbonate, calcium carbonate, cyclodextrin; polysaccharides [eg, cellulose ethers (hydroxypropylcellulose, hydroxypropylmethylcellulose, methylcellulose, ethylcellulose, hydroxymethylcellulose, carboxymethylcellulose, carboxymethylethylcellulose, etc.); , Cellulose esters (cellulose acetate phthalate, hydroxypropyl methylcellulose phthalate, etc.), pregelatinized starch, pullulan, de String, acacia, a protein such as gelatin, a hydrophilic polymer [for example, polyethylene glycol, Tween 80, acrylic acid copolymers, polyvinyl alcohol, polyvinyl pyrrolidone,
Polyvinyl acetal diethylaminoacetate, etc.]
And water-soluble binders such as carboxymethylcellulose calcium, low-substituted hydroxypropylcellulose, and disintegrants such as starches. Of these components, it is preferable to use hydrophilic or water-soluble components. In addition, at least an excipient is often used, and a binder is commonly used.

[0014] Various additives,
For example, surfactants such as anionic surfactants such as sodium alkyl sulfate, nonionic surfactants such as polyoxyethylene sorbitan fatty acid ester, polyoxyethylene fatty acid ester, and polyoxyethylene alkylphenol ether; Coloring agents; fragrances and the like may be added. In addition, since the dissolution rate of fumaric acid can be increased by using a surfactant,
The solubility and dissolution rate of fumaric acid can be controlled by adjusting the amount of the surfactant used.

Further, if necessary, shellac, waxes (for example, paraffin wax, carnauba wax, beeswax, montan wax, etc.), fatty acids and salts thereof, fatty acid glycerin esters such as higher alcohols, castor oil and the like can be used. Hydrogenated oils (eg, hydrogenated castor oil,
Lipids such as hardened beef tallow may be added.

The molded product can be produced using a conventional method, for example, a kneading machine or a molding machine (such as an extrusion molding machine or a compression molding machine), and the tablet can be produced using a tableting machine or the like. In the fumaric acid-containing deodorizing agent (particularly, tablets and the like), the fumaric acid content is, for example, 70% by weight or more (for example, 70% by weight).
To 100% by weight), preferably 80 to 100% by weight, more preferably 85 to 100% by weight (for example, 90 to 1% by weight).
00% by weight). If the fumaric acid content is less than 70% by weight, the long-term deodorization by fumaric acid may not be able to be maintained, and the solid agent may be in the shape of a cage with the dissolution of fumaric acid, and may be disintegrated with a decrease in strength. ,
It may cause clogging of pipes.

The deodorizing agent of the present invention comprises various odor components,
For example, nitrogen-containing odor components (particularly basic nitrogen-containing components)
Is useful for deodorizing. Examples of the nitrogen-containing odor component include ammonia, amines (methylamine,
Dimethylamine, trimethylamine, diethylamine,
Mono-, di- or trialkylamines such as triethylamine, cyclic amines, and heterocyclic amines). The deodorizing agent of the present invention is particularly useful for deodorizing a nitrogen-containing odor component selected from ammonia and alkylamines (such as trimethylamine). The odor component is a sulfur-containing odor component (for example, hydrogen sulfide, mercaptans such as methyl mercaptan, ethyl mercaptan, sulfides such as methyl sulfide, disulfides such as methyl disulfide), aldehydes (formaldehyde, acetaldehyde, etc.). , Organic acids (formic acid, acetic acid, propionic acid, butyric acid, valeric acid, etc.).

The concentration of the odor component is not particularly limited, and may be, for example, 0.1 to 1000 ppm (by weight), preferably about 0.1 to 100 ppm. The odor component can be deodorized by bringing the odor component-containing object (gas, liquid, or solid substance which may be wet) into contact with the deodorizing agent. The deodorization treatment temperature is, for example, about 70
C. or lower (e.g., -30C to 60C), preferably -2.
0 ° C to 50 ° C, more preferably about -10 ° C to 40 ° C, and usually about 0 to 40 ° C (particularly, 10 to 40 ° C,
Preferably, the room temperature is about 15 to 35 ° C).

The amount of the deodorizing agent used is, for example, from 1 to 10 depending on the fumaric acid content, the odor component concentration and the use.
1 mg to 100 g, preferably 10 g of deodorizing agent per hour in terms of fumaric acid with respect to an untreated material (urine or the like) containing 00 ppm of nitrogen-containing odor component (ammonia or the like)
It can be selected from the range of about mg to 50 g.

The source of the odor component is not particularly limited. For example, animal breeding farms (such as livestock facilities) such as poultry farms, pig farms and cattle breeding farms, and small animal breeding farms for experimental or test purposes in pharmaceutical companies and the like. And toilets (especially urinals of men's toilets, tanks of toilets (for example, tank-type simple toilets) for collecting manure), sewage treatment plants, sludge treatment plants, human waste treatment plants, garbage treatment plants, and the like. Of the sources of such odorous components, in animal breeding grounds, by introducing a fumaric acid-containing deodorizing agent into a feedlot or a manure tank, odors such as ammonia can be reduced over a long period of time, Gram-negative bacteria and the like can be sterilized.
Also, in a breeding place for animals for experiments or tests, by disposing a deodorizing agent on a tray or the like, it is possible to reduce the ammonia odor from manure and the like over a long period of time and also to perform a sterilization treatment.

Further, by disposing a deodorizing agent in a male urinal (urinal urinal), it is possible to remove ammonia odor and the like from urine and to sterilize by contacting fumaric acid with urine. In particular, when applied to a toilet equipped with an automatic flushing device that intermittently (periodically) or automatically supplies water to a toilet, fumaric acid can be intermittently dissolved, and a deodorizing agent is contained in the toilet. By merely arranging, the ammonia odor can be continuously removed and the cleaning or sterilizing effect can be enhanced.

A facility for washing manure and the like with washing water /
In equipment (animal breeding grounds, etc.) and men's flush toilets (urinals) that wash intermittently or automatically with washing water, a fumaric acid-containing treatment agent is added to washing water such as a washing tank, and a fumaric acid aqueous solution is generated. By using as a washing water, deodorization and sterilization can also be performed.

[0023]

According to the present invention, since the deodorizing agent is composed of a solid agent containing fumaric acid having low solubility and dissolution rate in water, ammonia odor and the like can be deodorized for a long period of time. Further, even when used in a urinal for men, the nitrogen-containing odor component can be efficiently deodorized for a long period of time.

[0024]

The present invention will be described below in more detail with reference to Examples, but the present invention is not limited to these Examples.

Preparation Example 1 Fumaric acid for food additive (manufactured by Takeda Pharmaceutical Co., Ltd.)
Using a 200-mesh) tablet, a 15 g tablet (size 30 mmφ × 12 mm) was prepared.

Preparation Example 2 Fumaric Acid for Food Additives (Takeda Pharmaceutical Co., Ltd., 24-
A mixture of 99 parts by weight of 200 mesh) and 1 part by weight of sucrose ester was circularly tableted using a tableting machine (manufactured by Hata Iron Works Co., Ltd.) to give a 500 mg tablet (size: 10 mmφ × 5 mm).
And a 250 mg tablet (size: 10 mmφ × 2.5 mm).

Example 1 In a laboratory rabbit breeding room equipped with a silk-shelf shelf, water was flowed from the washing water tank to the breeding bed for one minute at a rate of once every four hours to wash out manure excreted by the rabbit. The animals were bred while intermittently. After the washing of the manure, the ammonia concentration in the room was still 3 ppm.

On the other hand, the washing water tank (capacity of about 200
L) 15% of 100% by weight of fumaric acid obtained in Preparation Example 1
When 50 tablets of g tablets were charged and slowly stirred, the pH after 4 hours was 2.9. Then, when manure was washed out using the aqueous solution of fumaric acid in the washing water tank in the same manner as above, the ammonia concentration in the room after 5 minutes passed was 1 ppm or less. Further, when the above operation was repeated, one hour later, there was no ammonia odor.

Example 2 A 100% by weight fumaric acid tablet obtained in Preparation Example 1 containing 15% of 15
When three tablets of g were placed in the outlet of the urine and deodorization properties were examined for one month, during this time, almost no ammonia smell was detected and yellowing of the toilet did not occur.

Example 3 (1) A 15 g tablet containing 100% by weight of fumaric acid was added to 200 L
When 300 pieces were put into a chemical drum of No. 1 and the water was slowly stirred and allowed to stand for 5 hours, the pH of the aqueous solution became 2.7.
When the pig house was washed using the aqueous solution of fumaric acid, the washing of only water was compared with the ammonia,
The amine odor was significantly reduced. (2) A 15 g tablet containing 100% by weight of fumaric acid is weighed at 2000 m.
3 tablets were placed in a 1 l polycontainer, and warm water at 40 to 50 ° C. was put and left. The pH after 5 hours was 2.7. When the mana board prepared by cooking the fish with this aqueous solution of fumaric acid was washed, the amine odor disappeared instantaneously and the number of germs decreased greatly. (3) Five 15 g tablets of 100% by weight fumaric acid were
Put it in a 0 mesh vinyl net,
When placed in a bucket containing L water and allowed to stand for 5 hours, the pH of the aqueous solution was 2.9. When the aqueous solution of fumaric acid was poured into a cleaning drain on the floor of a cafeteria, the amine odor from the drain disappeared instantaneously. (4) Fifty g of 15 g tablets of 100% by weight fumaric acid were put into a tank of a simple toilet (tank type about 100 L of manure). One hour later, the smell of ammonia and amine in the toilet was remarkably improved. Three days passed until the amount of manure reached 150 L as it was, but there was no ammonia or amine odor. The manure was discarded after the volume reached 150 L. (5) 300 15 g tablets of 100% by weight fumaric acid
Packed in a cylindrical column (φ300mm x H600mm) and attached to the manure discharge port discharged from the pig barn of a pig farm, only liquid from the discharge port was passed through the column. Was done.

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Claims (6)

[Claims] 1. A solid deodorizing agent containing fumaric acid. 2. The deodorizing agent according to claim 1, which contains solid fumaric acid and deodorizes ammonia and amines. 3. The deodorizing agent according to claim 1, wherein the content of fumaric acid is 70% by weight or more. 4. The deodorizing agent according to claim 1, which is in the form of a tablet. 5. The deodorizing agent according to claim 1, which is placed in a urinal of a male toilet to deodorize. 6. The deodorizing agent according to claim 1, which is introduced into a tank of a tank-type simple toilet to deodorize and / or sterilize.