JP2008278941A - Deodorizing composition for ammoniacal odor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a deodorizing composition for effectively preventing an ammoniacal odor produced in the excrement treatment of a human or the like. <P>SOLUTION: The deodorizing composition for the ammoniacal odor contains at least one kind of metal ions selected from a group comprising Zn ions, Cu ions, Ni ions, Co ions and Ag ions and at least one kind of antibacterial components selected from a group comprising alcohol, cresol, chlorine dioxide, hypochlorous acid and chlorine, and pH is 3.5 to 8.4. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a deodorant composition having an ammoniacal odor.

Malodorous components caused by livestock, pets and human excrement include nitrogen compounds such as ammonia and amines and sulfur compounds such as hydrogen sulfide, mercaptans and thiocarbonyl compounds.
As a method for removing malodor, masking method using fragrance components such as fragrances, physical deodorization method using adsorption ability such as activated carbon, chemical deodorization method using chemical reaction or chemical adsorption, and microbial activity There are biological deodorization methods. Although included in the chemical deodorization method, there are a photocatalyst method and an ozone method for deodorizing a space.
So far, there are application examples regarding the deodorization of excrement in Patent Document 1, Patent Document 2, Patent Document 3, Patent Document 4, Patent Document 5, etc., but components of raw materials for domestic animals, pet breeding and manure Deodorizing performance is not enough for fertilizer production.
In particular, there are the following two techniques for preventing nitrogenous component malodor (for example, ammoniacal odor).

Patent Document 6 discloses a liquid deodorant composition having a pH of 6 to 8 containing nickel chloride and the like. In the deodorizing method using the deodorant composition, a complex is formed by generated ammonia and added nickel ions. However, since the technique is not a technique for cutting off the ammonia source (miscellaneous bacteria, urease enzyme), deodorization has not been sufficient.
Patent Document 7 describes a method of using an aqueous solution containing copper or nickel for deodorizing urine or the like. Although this publication mentions that a pH adjusting agent can be added, since it is not necessarily adjusted to an appropriate range, the deodorizing effect may not be exhibited depending on use conditions.

JP 2004-2754100 A JP 2004-208768 A Japanese Patent Laid-Open No. 57-16817 Japanese Patent Publication No. 64-2378 JP-A-5-293363 JP 2002-85537 A JP 2006-192127 A

  It is an object of the present invention to provide a deodorant composition that effectively prevents ammoniacal odor generated in the production of fertilizers using livestock and pet breeding feeds and manure as raw materials and in the treatment of human excreta.

That is, the present invention provides the following.
(1) A deodorizing composition for an ammoniacal odor characterized by containing a metal ion forming a complex with ammonia and an antibacterial component and having a pH of 3.5 to 8.4.
(2) The deodorant composition for ammonia odor according to (1), wherein the metal ion is at least one selected from Zn ion, Cu ion, Ni ion, Co ion and Ag ion.
(3) The antibacterial component is at least one selected from alcohol, cresol, chlorine dioxide, hypochlorous acid and chlorine, and deodorizing ammonia odor as described in (1) or (2) Composition.
(4) The deodorant composition contains at least one acid selected from ascorbic acid, citric acid, oxalic acid, benzoic acid, phosphoric acid, boric acid and hydrochloric acid (1) to (3 The deodorant composition of ammonia odor of any one of 1).

  The deodorant composition of the present invention can effectively prevent the ammoniacal odor generated in the production of fertilizer using manure as a raw material and the treatment of human excreta, and can exhibit a stable effect when used.

(1) Liquid composition In the present invention, bacteria and urease enzymes are produced by using antibacterial components such as reverse soap, alcohol, cresol, chlorine dioxide, hypochlorous acid, and chlorine to disinfect, disinfect, and have an antibacterial action. As well as sterilization (sterilization of bacteria, denaturation of urease enzyme, etc.), the generated ammonia uses at least one metal ion selected from Zn ion, Cu ion, Ni ion, Co ion, Cr ion and Ag ion, and pH It is related with the technique which deodorizes urine etc. by adjusting.
Moreover, it is related with the technique which raises this deodorizing effect further by including a moderate additive.

1) Metal ions Zn ions coordinate ammonia generated by the action of urease or the like in water to prevent ammonia from being generated as a gas. Coordinates from 1 molecule to 4 molecules of ammonia per molecule of Zn ion. It has been found that by using a solution containing Zn ions, a solution having a high deodorizing effect can be prepared for livestock breeding, fertilizer production, and human excrement. Zn ions can also be obtained by recovering zinc, which is widely used for rust prevention, as represented by galvanized steel sheets, and is significant as a resource recycling method. In addition to Zn ions, Cu ions, Ni ions, Co ions, or Ag ions can also be coordinated with ammonia and have the property of preventing the generation of ammonia.

A sufficient deodorizing effect can be obtained by keeping the amount of metal ions at least 10 times the amount of nitrogen compounds generated by the presence or decomposition.
Although the amount of metal ions is not limited, it is preferably 0.005 to 10% by mass, more preferably 0.05 to 1% by mass in the deodorant composition. This is because, within this range, a decrease in complex forming ability due to the influence of components coexisting with excreta can be avoided, and thus stability and deodorizing effects are excellent.

  The metal ion is preferably added as a salt. Any salt can be used. The compound containing at least one metal ion selected from the group consisting of Zn ion, Cu ion, Ni ion, Co ion and Ag ion is a corresponding halide, oxide, hydroxide, sulfate, nitrate, phosphoric acid. Examples thereof include inorganic metal salts such as salts and chromates. An organic metal salt having an organic acid as a counter ion is generally excellent in safety, and is convenient for use in a place where a human may touch it. Examples of organic acids include saturated aliphatic monocarboxylic acids such as formic acid and acetic acid, saturated aliphatic dicarboxylic acids such as malonic acid, succinic acid and adipic acid, non-reactive substances such as oleic acid, fumaric acid and maleic acid. It can be arbitrarily selected from those containing a carboxyl group such as saturated aliphatic carboxylic acid, carbocyclic carboxylic acid such as benzoic acid, citric acid, malic acid, gluconic acid and the like. Among them, copper gluconate and zinc gluconate are designated as standard-standard food additives that can be used for nutritional functional foods, and are safe for daily use. On the other hand, organometallic complexes with phthalocyanine, porphyrin and the like are not suitable for use because they themselves form a stable complex with the metal and interfere with the formation of the ammonia complex.

2) Antibacterial ingredients For example, the urine odor produced by livestock and pet breeding feeds, fertilizer manufacturing using manure as a raw material, and human excrement treatment, is the urease enzyme produced by various bacteria. This is due to ammonia generated when it is decomposed by. It is necessary to add a substance having a bactericidal effect in order to remove the situation where the activity of microorganisms easily causes the generation of malodor, such as suppressing the activity of various bacteria and preventing the generation of ammonia. As substances having antibacterial effects that satisfy safety, hygiene, ease of use, etc., alcohols such as ethanol and isopropanol, cresol, chlorine dioxide, hypochlorous acid, and chlorine are preferable. These may be single or plural.
The antibacterial component needs to be used in an amount that contributes to the suppression of microbial activity caused by the generation of malodorous substances. For this reason, it is good to control the usage-amount of an antimicrobial component in consideration of usage environments, such as temperature, and the amount of microorganisms.
The antibacterial component may be used as it is, but a solvent such as water or alcohol may be added to obtain a deodorant composition.
The amount of the antibacterial component is not limited, but is preferably 0.005% by mass or more in the deodorant composition, but more preferably 0.5% by mass or more in view of the stability of the antibacterial component. However, if it exceeds 30% by mass, further improvement in the deodorizing effect will be slight and the cost will be high.

3) pH
The deodorant composition can be used safely, and stabilization of pH is necessary as a condition for ensuring the deodorant effect. The pH is 3.5 to 8.4. Within this range, both safety and a deodorizing effect can be obtained. When discharging the deodorant composition of this invention to a sewer etc., pH shall be 5.8-8.4. In order to satisfy these conditions, it is preferable to contain at least one acid selected from ascorbic acid, citric acid, oxalic acid, benzoic acid, phosphoric acid, boric acid and hydrochloric acid having a pH buffering action.
The amount of these acids is not limited, but the pH is preferably 0.01 to 20% by mass, more preferably 0.1% in the deodorizing composition as an amount for maintaining 3.5 to 8.4. -10 mass% is required.

In the deodorant composition of the present invention, an arbitrarily selected component can be added in order to enhance the added value as long as the essential components can sufficiently function and the safety of the liquid agent can be ensured. As an optional component, a surfactant having an alkyl group may be added in order for the deodorant solution and the object to work efficiently.
Also, deodorant that reacts with odor components and does not bromide, porous adsorptive deodorant such as activated carbon, zeolite, and apatite that adsorbs and absorbs odors, and catalyst that eliminates odors such as platinum, palladium, and titanium oxide , Alum, antibacterial and antifungal agents that suppress the growth of microorganisms, dispersants, emulsifiers, thickeners, gelling agents and other additives, preservatives, and various flavoring ingredients As mentioned.

(2) Usage method Odor generation is prevented by causing the deodorizing composition to act on nitrogen-based malodorous substances such as ammonia odor.
The method of use includes, for example, a method of mixing and spraying the deodorant composition in a liquid form with respect to a solid, liquid and gas containing a malodorous substance, and is not limited. The deodorizing effect is obtained by bringing the malodorous substance and the deodorizing composition into contact with each other. For example, a deodorizing liquid having a high concentration may be prepared and used after being appropriately diluted. Water, alcohol or the like is used as the dilution solvent. Examples include use of the deodorant liquid in a toilet bowl (flowing every time or circulation), spraying or applying the deodorant liquid, and the like.
The deodorant liquid may be dried to form a powder and used as it is or mixed with a solvent such as water.

EXAMPLES The present invention will be described below with reference to examples, but the present invention is not limited to the following examples.
Example 1
A deodorant stock solution was prepared by mixing CuCl ₂ as Cu ions, sodium salt solution as hypochlorous acid, and phosphoric acid with water to the concentrations shown in Table 1. This stock solution was diluted 1000 times with water and used. The pH of the stock solution and the pH of the diluted solution are measured and shown in Table 1.
(Examples 2-9)
About the metal ion, the antibacterial component, and the pH adjuster, the concentration and type were changed, the deodorizing effect was examined, and the result was shown. A deodorant stock solution was prepared in the same manner as in Example 1. This stock solution was diluted and evaluated, and the results are shown in Table 1.
(Comparative Examples 1 and 2)
Comparative Example 1 is an example containing no antibacterial component, and Comparative Example 2 is an example having a low pH. In Comparative Examples 1 and 2, deodorant stock solutions were prepared in the same manner as in Example 1. This stock solution was diluted and evaluated, and the results are shown in Table 1. Comparative Example 2 is an example in which, although a sufficient deodorizing effect is obtained, it is a subject of regulation by the Sewerage Law, and thus its use is difficult.

<Deodorization performance evaluation>
An evaluation of the deodorizing performance of the liquid was conducted by 20 monitors who answered that there was an unpleasant odor clearly seen in the toilet space. The liquid agent having the composition shown in Table 1 was used as the diluent shown in Table 1. The deodorant was sprayed after use of the toilet, and the deodorant performance was evaluated for the change in odor intensity that felt the discomfort of the space after spraying. The results are shown in Table 1.
Odor intensity was evaluated as follows.
Odor intensity 5: Odor odor intensity clearly understood 4: Odor odor intensity understood by sniffing well 3: Odor odor intensity clearly understood 2: Odor intensity almost odorless 1: No odor at all Odor intensity of target odor before spraying liquid In comparison, the determination when the odor intensity of the target odor after spraying was reduced by 2 points or more was “◎”, “◯” was reduced by 1 point, and “x” was inferior to that.

Claims (4)

  A deodorizing composition for an ammoniacal odor, comprising a metal ion that forms a complex with ammonia and an antibacterial component, and having a pH of 3.5 to 8.4.   The deodorant composition for ammonia odor according to claim 1, wherein the metal ion is at least one selected from Zn ion, Cu ion, Ni ion, Co ion and Ag ion.   The antibacterial component according to claim 1 or 2, wherein the antibacterial component is at least one selected from alcohol, cresol, chlorine dioxide, hypochlorous acid and chlorine.   The deodorizing composition contains at least one acid selected from ascorbic acid, citric acid, oxalic acid, benzoic acid, phosphoric acid, boric acid, and hydrochloric acid. Deodorant composition of ammonia odor as described in the item.