JP2007268084A - Aqueous solution-like, aqueous gel-like or film-like deodorant - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a deodorant which exerts a great deodorizing effect on a basic odor substance such as ammonia, even if a masking agent is not added. <P>SOLUTION: This deodorant comprises an alkali metal salt of carboxyalkylcellulose (carboxymethylcellulose, etc.), and a water-soluble metal compound (organic acid or inorganic acid metal salt, etc.) if necessary. The deodorant, which has a form like an aqueous solution, aqueous gel or a film, can express deodorizing properties even if it does not contain the masking agent. In the deodorant, a pH can also be, for example, in the order of 3-7 in the aqueous solution-like or aqueous gel-like form. Additionally, the deodorant can also contain an organic acid or its salt. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an aqueous solution, aqueous gel or film deodorant having an excellent deodorizing effect on basic odorous substances such as ammonia and amines,

  Various products such as fibers, filters, sprays, sheets, and gels using acidic substances such as carboxylic acids or their salts have been developed as deodorizers for basic odor substances such as ammonia and amines.

  For example, in Japanese Patent No. 2557645 (Patent Document 1) and Japanese Patent Application Laid-Open No. 2002-371462 (Patent Document 2), a fiber or a nonwoven fabric containing cellulose fibers is formed, and then the cellulose fibers are carboxymethylated into a salt form. Materials are disclosed. JP-A-9-291456 (Patent Document 3) discloses a material obtained by forming a composite nonwoven fabric containing synthetic fibers and cellulose fibers and then carboxymethylating the cellulose fibers. Japanese Unexamined Patent Application Publication No. 2004-321332 (Patent Document 4) discloses a material in which paper powder holds copper or zinc compound having a deodorizing function via carboxymethyl cellulose. However, these materials are cloth-like, have limited applications (use methods), and have a complicated process of imparting deodorizing properties. Moreover, since it is necessary to carboxymethylate, without dissolving a cellulose fiber, the etherification degree of a carboxymethyl group cannot be raised and sufficient deodorizing effect is not acquired. Furthermore, in the form of fiber, paper powder, etc., a support for fixing the deodorant component is required.

  In addition, in the toiletry products, water-based gel-like products are often used from the viewpoints of sustainability of the deodorizing function and ease of handling. As an aqueous gel composition, for example, JP-A-2002-293987 (Patent Document 5) and JP-A-2003-154599 (Patent Document 6) disclose a composition composed of carboxymethyl cellulose and an aluminum salt. ing. However, in these compositions, a deodorant is added separately, and the deodorant is imparted by gradually releasing the deodorizer from the gel.

Japanese Patent No. 2559600 (Patent Document 7) discloses a deodorizing composition containing a polymer complex in which a carboxyl group of a polymer such as carboxymethylated cellulose or alginic acid is complex-bonded with copper and / or zinc. It is disclosed. However, Patent Document 7 specifically describes both a deodorant composed of an alkali metal salt of carboxyalkyl cellulose alone and a deodorant combined with an alkali metal salt of carboxyalkyl cellulose and a metal compound. Not.
Japanese Patent No. 2557645 (Claim 1) JP 2002-371462 A (Claim 1) JP-A-9-291456 (Claim 1) JP 2004-321332 A (Claim 2) JP 2002-293987 A (Claims 1 and 2) JP 2003-154599 A (claims 3 and 4) Japanese Patent No. 2559600 (Claim 1)

  Accordingly, an object of the present invention is to provide a deodorizing effect on a basic odor substance without using a masking agent or the like, and is an aqueous solution, aqueous gel or film deodorant excellent in deodorizing properties. Is to provide.

  Another object of the present invention is to provide an aqueous, aqueous gel or film deodorant that can be produced by a simple method and can be applied to various uses.

  As a result of intensive studies to achieve the above-mentioned problems, the present inventor added a masking agent when using an alkali metal salt of carboxyalkyl cellulose or combining an alkali metal salt of carboxyalkyl cellulose with a water-soluble metal compound. Even without this, it was found that a high deodorizing effect on basic odor substances can be obtained, and the present invention has been completed.

  That is, the deodorant of the present invention is a deodorant that can exhibit deodorant properties without containing a masking agent, and is composed of an alkali metal salt of carboxyalkyl cellulose. This deodorant may have the form of an aqueous solution, an aqueous gel, or a film. This deodorant may be composed of an alkali metal salt of carboxyalkyl cellulose and a water-soluble metal compound.

  The aqueous solution or aqueous gel deodorant can be composed of an alkali metal salt of carboxyalkyl cellulose, a water-soluble metal compound and water. Moreover, you may comprise a film-form deodorizer with the alkali metal salt of carboxyalkyl cellulose alone. Such a film-like deodorant can be obtained by drying a mixture of an alkali metal salt of carboxyalkyl cellulose and water. Further, the film-like deodorant composed of an alkali metal salt of carboxyalkyl cellulose and a water-soluble metal compound is obtained, for example, by drying a mixture of an alkali metal salt of carboxyalkyl cellulose, a water-soluble metal compound and water. Can do. The water-soluble metal compound may be a water-soluble metal compound containing at least one metal selected from transition metals and Group 13 metals of the periodic table (such as at least one metal selected from titanium, zirconium, and silver). Good. In the film-like deodorant, even if a water-soluble metal compound other than copper and zinc is used as the water-soluble metal compound, a high deodorizing effect can be obtained.

  The deodorant may have a pH of about 3 to 7, for example, in the form of an aqueous solution or an aqueous gel. The alkali metal salt of carboxyalkyl cellulose may be an alkali metal salt of carboxymethyl cellulose. The ratio of the water-soluble metal compound may be about 10 to 100 parts by weight with respect to 100 parts by weight of the alkali metal salt of carboxyalkyl cellulose. The deodorant may further contain an organic acid or a salt thereof.

  The deodorant of the present invention uses an alkali metal salt of carboxyalkyl cellulose (such as an alkali metal salt of carboxyalkyl cellulose or a combination of an alkali metal salt of carboxyalkyl cellulose and a water-soluble metal compound). Even if it is not added, it can exhibit a high deodorizing effect on basic odorous substances such as ammonia and amine, and is excellent in deodorizing properties. Moreover, the deodorizer of this invention is aqueous solution form, gel form, or film form, and can be manufactured by a simple method. Moreover, since it can be easily formed into various shapes, it can be applied to various uses. In addition, the gel-like deodorant has high shape stability of the aqueous gel.

  The deodorant of this invention is comprised with the alkali metal salt of the carboxyalkyl cellulose, and has forms, such as aqueous solution form, aqueous gel form, and film form. And the said deodorizer is deodorant even if it does not contain the deodorant generally used, ie, a masking agent (including general deodorants other than the alkali metal salt of carboxyalkyl cellulose), etc. Expresses sex. The deodorant may be composed of an alkali metal salt of carboxyalkyl cellulose alone or an alkali metal salt of carboxyalkyl cellulose and a water-soluble metal compound.

  The aqueous solution or aqueous gel deodorant is composed of an alkali metal salt of carboxyalkyl cellulose, a water-soluble metal compound and water, and can be prepared by mixing these components. The film-like deodorant can be composed of at least an alkali metal salt of carboxyalkyl cellulose, and may be composed of an alkali metal salt of carboxyalkyl cellulose and a water-soluble metal compound. The film-like deodorant can be usually obtained by drying a mixture of these components and water (aqueous solution, gel (including the gel-like deodorant), etc.).

(Alkali metal salt of carboxyalkyl cellulose)
Examples of the carboxyalkyl cellulose forming the carboxyalkyl cellulose alkali metal salt include carboxy C _1-4 alkyl cellulose such as carboxymethyl cellulose (CMC), carboxyethyl cellulose, and carboxypropyl cellulose.

  The average degree of substitution (or average degree of etherification (average degree of substitution such as carboxymethyl group)) of carboxyalkyl cellulose (such as carboxymethyl cellulose) can be selected from a range that can be dissolved in water, for example, a range of 0.35 to 3, Preferably it is 0.4-2.5, More preferably, it is about 0.5-2 (for example, 0.6-1.5). In terms of the deodorizing effect on basic odorous substances such as ammonia and amines, a higher degree of etherification is preferred, but it is not easy to produce a complete etherified product having a degree of etherification of 3, so that it can be obtained. The degree of etherification may be appropriately selected within the range.

  Examples of the alkali metal salt include sodium salts, potassium salts, lithium salts and the like of the carboxyalkyl cellulose (such as carboxymethyl cellulose), and sodium salts are often used.

  In the aqueous or aqueous gel deodorant, the ratio of the alkali metal salt of carboxyalkyl cellulose can be selected as appropriate as long as the alkali metal salt can be dissolved. However, from the viewpoint of viscosity and handleability, the entire deodorant The content is preferably about 0.1 to 20% by weight. In addition, from the viewpoint of gel formation and deodorization, the ratio is 0.1 to 15% by weight, more preferably 0.3 to 10% by weight, and even more preferably about 0.5 to 5% by weight. Good.

  In the film-like deodorant, the composition (aqueous solution, aqueous gel, etc.) before drying contains an alkali metal salt of carboxyalkyl cellulose, for example, 0.1 to 20% by weight, preferably 0.3 to 15% by weight. %, More preferably about 0.5 to 10% by weight.

(Water-soluble metal compound)
When the alkali metal salt of carboxyalkyl cellulose and a water-soluble metal compound are combined, the deodorizing property can be further improved. The mixture of the alkali metal salt of carboxyalkyl cellulose and water is in the form of a dispersion or an aqueous solution. When a water-soluble metal compound is added to such a mixture, an aqueous gel can be obtained depending on the type of metal. There is.

  Examples of the water-soluble metal compound include transition metals (Group 4 metals such as titanium and zirconium; Group 5 metals such as vanadium; Group 6 metals such as molybdenum; Group 7 metals such as manganese; Iron, etc.) Group 8 metal; Group 9 metal such as cobalt; Group 10 metal such as nickel; Group 11 metal such as silver; Group 12 metal such as zinc), Group 13 metal (such as aluminum), etc. The water-soluble compound to contain is mentioned. The metal constituting the water-soluble metal compound may be a monovalent metal or a polyvalent metal (such as a 2- to 4-valent metal).

  The water-soluble metal compound may contain the above metals alone or in combination of two or more thereof, and these metals, alkali metals (sodium, potassium, etc.), alkaline earth metals (magnesium, calcium, etc.), It may contain a combination of a periodic table group 3 metal and the like, for example, a double salt containing the above metal and an alkali metal. Of the above metals, titanium, zirconium, silver, zinc, aluminum, and the like are preferable, and at least one metal selected from titanium, zirconium, and silver is particularly preferable.

As long as the water-soluble metal compound is water-soluble, the metal-containing oxide, hydroxide or halide (fluoride, chloride such as iron chloride; bromide such as iron bromide or aluminum bromide; iodide, etc.) In general, inorganic acids (such as sulfuric acid, nitric acid, carbonic acid, phosphoric acid, halogen acids (such as hydrochloric acid and perchloric acid)) or organic acids [carboxylic acids such as acetic acid and propionic acid (C _{1) -4} carboxylic acid and the like, and oxycarboxylic acid such as lactic acid ( _C1-4 oxycarboxylic acid and the like)] and a salt of the metal is often used. Of the acids (inorganic acids and organic acids) constituting the metal salt, sulfuric acid, nitric acid, organic acids (particularly oxycarboxylic acids) and the like are preferable. A water-soluble metal compound can be used individually or in combination of 2 or more types.

Specific examples of the water-soluble metal compound include sulfates [titanium sulfate, silver sulfate, zinc sulfate, aluminum sulfate, aluminum sulfate alkali metal double salts (such as potassium alum, sodium alum, cesium alum, etc.)], nitrates (nitric acid, etc.) Titanium, silver nitrate, zinc nitrate, aluminum nitrate, etc.), carboxylates (C _1-3 carboxylates such as titanium acetate, silver acetate, zinc acetate, aluminum acetate), oxycarboxylates (titanium lactate, silver lactate, And C _1-3 oxycarboxylates such as zinc lactate and aluminum lactate). Of these, silver sulfate, zinc sulfate, aluminum sulfate, potassium alum, silver nitrate, titanium nitrate, titanium lactate, silver lactate and the like are particularly preferable. For example, as a specific example of titanium lactate (titanium lactate), an organics series such as “Orgatics TC-310” manufactured by Matsumoto Pharmaceutical Co., Ltd. can be suitably used. Aluminum salts (such as aluminum sulfate alkali metal double salts such as potassium alum) and other metal salts (such as sulfates such as silver sulfate and zinc sulfate, lactates such as titanium lactate, nitrates such as silver nitrate), etc. And may be used in combination. For example, if only zinc sulfate is used, gelation is unlikely to occur, but if zinc sulfate and aluminum zinc such as potassium alum are used, gelation can be performed efficiently. In the film-like deodorant, it is preferable to use a water-soluble metal compound excluding copper and zinc.

  The ratio of the water-soluble metal compound can be selected from a wide range of about 0 to 100 parts by weight (for example, 10 to 100 parts by weight) with respect to 100 parts by weight of the alkali metal salt of carboxyalkyl cellulose. Part (for example, 5 to 80 parts by weight), preferably 10 to 70 parts by weight, more preferably about 15 to 50 parts by weight.

(Organic acid or its salt)
The deodorant may further contain an organic acid or a salt thereof from the viewpoint of adjusting the gelation speed and gel strength. Examples of the organic acids, acetic acid, butyric acid, oxalic acid, succinic acid, succinic anhydride, maleic acid, maleic anhydride, malonic acid, (such as C _1-10 carboxylic acid) carboxylic acids such as adipic acid; glycolic acid Oxycarboxylic acids such as lactic acid, tartaric acid, malic acid, citric acid, gluconic acid and glucuronic acid (C _1-10 oxycarboxylic acid etc.); amino acids such as aspartic acid (acidic amino acid etc.) and the like.

The organic acid salt may be a salt such as the transition metal exemplified in the water-soluble metal compound, but usually an alkali metal salt (potassium salt, sodium salt, etc.), an alkaline earth metal salt ( Magnesium salt, calcium salt, etc.). These organic acids or salts thereof can be used alone or in combination of two or more. Preferable organic acids or salts thereof include, for example, C _1-6 oxycarboxylic acids such as lactic acid and tartaric acid (particularly C _1-4 oxycarboxylic acids).

  The ratio of the organic acid or a salt thereof is, for example, 0.01 to 30 parts by weight, preferably 0.1 to 20 parts by weight, and more preferably 1 to 15 parts by weight with respect to 100 parts by weight of the alkali metal salt of carboxyalkyl cellulose. Part (for example, 5 to 10 parts by weight). The ratio of the organic acid or salt thereof is, for example, 1 to 90 parts by weight, preferably 10 to 80 parts by weight, and more preferably about 20 to 70 parts by weight with respect to 100 parts by weight of the water-soluble metal compound. Also good.

  The aqueous solution or gel deodorant is prepared by mixing the above-described components (alkali metal salt of carboxyalkyl cellulose, water-soluble metal compound, and if necessary organic acid or salt thereof) with water, and if necessary, mixing the mixture. It can be manufactured by standing still. Further, the film-like deodorant is composed of the above-described constituents (alkali metal salt of carboxyalkyl cellulose, alkali metal salt of carboxyalkyl cellulose and a water-soluble metal compound, and if necessary, an organic acid or a salt thereof), water, Can be mixed and dried. In mixing the components and water, all the components may be mixed at one time.For example, when using a water-soluble metal compound, (i) preparing an aqueous dispersion or aqueous solution of an alkali metal salt of carboxyalkyl cellulose. After adding other components (water-soluble metal salt, organic acid, etc.) to this aqueous dispersion or aqueous solution, or (ii) preparing an aqueous solution of water-soluble metal salt and / or organic acid, An alkali metal salt of alkyl cellulose may be dispersed or dissolved.

  In addition, in order to improve the dispersibility or solubility with respect to the water of the alkali metal salt of carboxyalkyl cellulose, you may use a dispersing agent as needed. In the case of using a dispersant, (i) an alkali metal salt of carboxyalkyl cellulose is previously dispersed in a dispersant, and then this dispersion is mixed with water to prepare an aqueous solution, and other components (water-soluble metal) are added to this aqueous solution. Salt, organic acid, etc.) may be added, and (ii) the dispersion may be mixed with an aqueous solution of water-soluble metal salt and / or organic acid, and water-soluble metal salt and / or organic acid may be added. It may be dissolved in a mixture of water and a dispersant, and an alkali metal salt of carboxyalkyl cellulose may be mixed and dissolved in this solution.

Examples of the dispersant include alcohols [monohydric alcohols such as methyl alcohol, ethyl alcohol, propyl alcohol, and isopropyl alcohol (such as C _1-4 alkanols); divalents such as ethylene glycol, propylene glycol, and 1,3-butanediol. Alcohol (C _1-6 alkanediol etc.); Trivalent alcohol (eg tri- to pentahydroxy C _1-4 alkane etc.) such as glycerin, etc., ketones (acetone, methyl ethyl ketone etc.), etc. can be used. A dispersing agent can be used individually or in combination of 2 or more types. The ratio of the dispersant is, for example, about 5 to 1000 parts by weight, preferably about 50 to 500 parts by weight, and more preferably about 100 to 300 parts by weight with respect to 100 parts by weight of the alkali metal salt of carboxyalkyl cellulose. Also good.

  The deodorant of the present invention preferably has a pH of 3 to 7, preferably 3.5 to 6.7, more preferably about 4 to 6.5 in the state of an aqueous solution or an aqueous gel. In such a range, a part of the carboxyl group of the carboxyalkyl cellulose is in the acid form, and is easily bonded to the metal of the water-soluble metal compound rather than the alkali metal, and the deodorizing effect is improved. In addition, when pH is too low, carboxyalkyl cellulose will change to an acid type, and there exists a possibility that the form of a gel cannot be maintained or deodorizing property may fall. Moreover, when pH is too high, it will become difficult for a carboxyalkyl cellulose and a water-soluble metal compound to interact, and there exists a possibility that deodorizing property may fall. In the aqueous solution or gel deodorant of the present invention, the deodorant itself usually has a pH in the above range. With a film deodorant, it is usually before being formed into a film ( That is, the composition (aqueous solution or aqueous gel) before drying has a pH in the above range.

  In the gel-like deodorant, the gel strength is, for example, 98 Pa or more (for example, 98 to 2000 Pa), preferably 100 to 1800 Pa, more preferably 120 to 1600 Pa (for example, 110 to 100) from the viewpoint of maintaining the shape of the deodorant. About 1500 Pa).

  A film-like deodorant is prepared by filling an appropriate container (tray, bat, etc.) with the above-mentioned aqueous solution or aqueous gel-like composition containing each component, or a plate-like substrate (peelable substrate, etc.) ) And can be obtained by a conventional drying method, for example, room temperature drying, heat drying, freeze drying, etc., and is usually produced by room temperature or heat drying. The drying temperature may be room temperature (about 20 to 30 ° C.) to 100 ° C., preferably 40 to 90 ° C., and more preferably about 50 to 85 ° C. In addition, drying can be normally performed under a normal pressure or pressure reduction.

  The shape of the solid deodorant is not limited to a film shape, and may be an indefinite shape such as a pellet shape or a powder shape. Such an irregular shape deodorant may be produced by a conventional molding method, but may be produced by pulverizing or cutting the film-like deodorant.

  In a conventional gel (or film) deodorant, a deodorizing component such as a commonly used masking agent is added, and the masking agent is released in a sustained manner to develop a deodorizing effect. It was. On the other hand, the deodorant of the present invention contains a masking agent by using an alkali metal salt of carboxyalkyl cellulose (particularly by combining an alkali metal salt of carboxyalkyl cellulose and a water-soluble metal compound). Even if it is not, deodorant property can be expressed.

  As described above, the deodorant of the present invention can provide a high deodorizing effect on basic odorous substances such as ammonia and amine without adding a masking agent. Etc.) and other additives such as photocatalytic compounds (for example, titanium oxide, zinc oxide, ferric oxide, etc.), antibacterial agents, fungicides, preservatives, pH adjusters, surfactants, colorants , Fibers (organic fibers such as microfibrous cellulose, inorganic fibers, etc.), adsorptive deodorants (activated carbon, etc.), polymers (celluloses such as alkyl cellulose and hydroxyalkyl cellulose or derivatives thereof, water-soluble polymers such as alginic acid, etc. Etc.) may be used in combination.

  The deodorant of the present invention has a high deodorizing effect on basic odorous substances such as ammonia and amine without using a masking agent, and is in the form of an aqueous solution, gel or film. Therefore, it can be applied to various uses, unlike fiber and cloth forms. Therefore, it is useful for applications that require deodorization of basic odor substances, for example, deodorization of bad odors such as toilets, indoors, and cars.

  Hereinafter, the present invention will be described in more detail based on examples, but the present invention is not limited to these examples.

Examples 1-4
A deodorant was prepared according to the following procedure with the formulation shown in Table 1 or Table 2.

  A dispersion in which sodium carboxymethylcellulose (CMC-Na) was dispersed in propylene glycol was prepared in advance, and this dispersion was poured into water under stirring to dissolve CMC-Na. After complete dissolution of CMC-Na, the remaining components were added and stirred, and the pH of the resulting aqueous solution was measured.

  The aqueous solution was transferred to a container and allowed to stand at room temperature for 1 day to obtain an aqueous gel deodorant (Examples 1 and 3). Moreover, the aqueous solution was poured into a tray and dried at 80 ° C. for 8 hours to obtain a film-like deodorant (Examples 2 and 4).

  About the obtained deodorizer, while performing the deodorizing test with respect to ammonia, about the gel-like deodorizer, the gel strength was measured.

Examples 5-8
A deodorant was prepared according to the following procedure with the formulation shown in Table 1 or Table 2.

  Under stirring, the metal compound was poured into water and dissolved. Separately, a dispersion in which CMC-Na was dispersed in propylene glycol was prepared, this dispersion was added to the aqueous solution of the metal compound with stirring, and the pH of the resulting aqueous gel was measured.

  The aqueous gel was transferred to a container and allowed to stand at room temperature for 1 day to obtain an aqueous gel deodorant (Examples 5 and 7). The aqueous gel was poured into a tray and dried at 80 ° C. for 8 hours to obtain a film-like deodorant (Examples 6 and 8).

  About the obtained deodorizer, while performing the deodorizing test with respect to ammonia, about the gel-like deodorizer, the gel strength was measured.

Example 9
A dispersion in which CMC-Na was dispersed in propylene glycol with the formulation shown in Table 2 was prepared in advance, and this dispersion was poured into water with stirring to obtain an aqueous solution. The obtained CMC-Na aqueous solution was poured into a tray and dried at 80 ° C. for 8 hours to obtain a CMC-Na film. Using this CMC-Na film, a deodorization test for ammonia was performed.

Example 10
A dispersion having CMC-Na dispersed in propylene glycol was prepared in advance according to the formulation shown in Table 1, and this dispersion was poured into water with stirring to obtain an aqueous solution. Using this CMC-Na aqueous solution, a deodorization test for ammonia was performed.

Comparative Example 1
As a comparison, a deodorizing test for ammonia was performed on an example using only water in the same manner as in the example.

  Tables 1 and 2 show the results obtained in the examples and comparative examples. The deodorization test and gel strength measurement were performed by the following methods.

(Deodorization test)
A 1 L deodorer bag was charged with 1 g of deodorant, and ammonia was sealed so as to have an initial concentration of 100 ppm and left in a sealed state for 3 hours. After 3 hours, the residual ammonia concentration was measured with a gas detector tube, and the deodorization rate was calculated based on the following formula.

Deodorization rate (%) = [{initial concentration (ppm) —residual concentration after 3 hours (ppm)} / initial concentration (ppm)] × 100
In addition, about the water-based gel-like deodorant, in the composition of Table 1 or Table 2, it measured so that the component except water might be set to 1g, and measured.

(Gel strength)
The strength of the columnar gel having a diameter of 50 mm and a height of 30 mm was measured with a food rheometer (manufactured by Sun Kagaku Co., Ltd., using a rod-shaped adapter having a diameter of 11 mm) using a columnar gel that had been left for 24 hours or more. In addition, measurement was performed about 10 points | pieces located inside from the center distance of an end from the center of a gel, and the obtained numerical value was converted as intensity | strength per cm < ² >, and it averaged was made into gel strength (Pa).

  In addition, the component used by the Example and the comparative example is as follows.

(i) CMC-Na: Carboxymethylcellulose sodium salt (manufactured by Daicel Chemical Industries, Ltd., CMC Daicel 1240 (etherification degree 0.90, 1% aqueous solution viscosity 24 mPa · s, pH 7.0))
(ii) Potash alum (K · Al (SO ₄ ) ₂ · 12H ₂ O)
(iii) Titanium lactate (manufactured by Matsumoto Pharmaceutical Co., Ltd., ORGATICS TC-310)
(iv) Zinc sulfate (ZnSO ₄ · 7H ₂ O)
(v) Silver nitrate (AgNO ₃ )
The results are shown in Tables 1 and 2.

  As is clear from the table, the deodorizers of the examples had a higher deodorizing effect on ammonia than the comparative examples.

Claims (12)

  A deodorant that exhibits deodorizing properties without containing a masking agent, and is composed of an alkali metal salt of carboxyalkyl cellulose.   The deodorizer according to claim 1, which is in the form of an aqueous solution, an aqueous gel or a film.   The deodorizer according to claim 1, comprising an alkali metal salt of carboxyalkyl cellulose and a water-soluble metal compound.   The deodorizer according to claim 3, which is composed of an alkali metal salt of carboxyalkyl cellulose, a water-soluble metal compound, and water, and is in the form of an aqueous solution or an aqueous gel.   The deodorizer according to claim 3, wherein the water-soluble metal compound is composed of a water-soluble metal compound excluding copper and zinc and is in the form of a film.   The deodorizer according to claim 3 or 5, which is obtained by drying a mixture of an alkali metal salt of carboxyalkyl cellulose, a water-soluble metal compound and water and is in the form of a film.   The deodorizer according to claim 1, which has a pH of 3 to 7 in the form of an aqueous solution or an aqueous gel.   The deodorizer according to claim 1, wherein the alkali metal salt of carboxyalkyl cellulose is an alkali metal salt of carboxymethyl cellulose.   The deodorizer according to claim 3 or 4, wherein the water-soluble metal compound is a water-soluble metal compound containing at least one metal selected from transition metals and Group 13 metals of the periodic table.   The deodorizer according to any one of claims 3 to 6, wherein the water-soluble metal compound is a water-soluble metal compound containing at least one metal selected from titanium, zirconium, and silver.   The deodorizer according to claim 4, wherein the ratio of the water-soluble metal compound is 10 to 100 parts by weight with respect to 100 parts by weight of the alkali metal salt of carboxyalkyl cellulose.   Furthermore, the deodorizer of any one of Claims 1-6 containing an organic acid or its salt.