Deodorizing composition

Abstract

This invention provides a deodorizing composition that has improved effectiveness in removing malodors caused by methyl mercaptan compared to conventional technologies. [Solution] The deodorizing composition is formulated with component (A) a zinc compound, component (B) a silicate compound, and as component (C) one or more ionic components selected from the group consisting of (c1) condensed phosphoric acid and its salts, (c2) amino acids and their salts, and (c3) ionic surfactants.

Description

Technical Field

[0001] The present invention relates to a deodorizing composition.

Background Art

[0002] Malodor is an unpleasant odor for humans, and its effects may cause psychological and physiological stress reactions. Conventionally, various substances that cause malodor have been found, and typical substances include ammonia, phenols, aldehydes, sulfur compounds, and the like. On the other hand, it is known that zinc compounds are effective as substances for removing such malodor, that is, deodorizing. For example, in Patent Document 1, a deodorizing composition combining a zinc compound such as zinc oxide and functional particles such as silicon dioxide has been proposed.

[0003] Among malodors, halitosis is one of those that can affect daily life. Since halitosis can cause discomfort to others in daily life and may also affect human relationships, conventionally, the development of technologies for removing halitosis has been actively carried out. As causative substances of halitosis, for example, hydrogen sulfide, methyl mercaptan, dimethyl sulfide, which are volatile sulfur compounds, can be mentioned. In particular, as described in Patent Documents 2 and 3, methyl mercaptan, which is detected at a high concentration in the oral cavity of periodontitis patients, is known to be likely to feel an odor even at a low concentration because of its low odor threshold. Therefore, in order to suppress the odor (halitosis) caused by methyl mercaptan in the oral cavity, a technology having a high removal effect on methyl mercaptan is desired. Further, in Patent Document 4, a composition for suppressing methyl mercaptan odor, which contains an olefin-based polymer and zinc oxide as an odor suppressant, has been proposed.

[0004] Methyl mercaptan is also known as one of the causative substances of nervous odor, and in Patent Document 5, a nervous odor deodorant containing zinc oxide as one of the deodorizing components has been proposed.

[0005] However, the reality is that conventional technologies are not sufficiently effective in removing the malodor caused by methyl mercaptan. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Japanese Patent Publication No. 2012-66085 [Patent Document 2] Japanese Patent Publication No. 2016-84311 [Patent Document 3] Japanese Patent Publication No. 2019-194264 [Patent Document 4] Special Publication No. 2021-515054 [Patent Document 5] International Publication No. 2019 / 225755 [Overview of the project] [Problems that the invention aims to solve]

[0007] Under these circumstances, providing a deodorizing composition that is more effective at removing malodors caused by methyl mercaptan compared to conventional technologies remains an ongoing technical challenge.

[0008] Therefore, the object of the present invention is to provide a deodorizing composition that has an improved effect in removing malodors caused by methyl mercaptan compared to the prior art. [Means for solving the problem]

[0009] As a result of diligent research, the present inventors have found that the above-mentioned problems can be solved by incorporating the following into a deodorizing composition: component (A) a zinc compound, component (B) a silicate compound, and component (C) one or more ionic components selected from the group consisting of (c1) condensed phosphoric acid and its salts, (c2) amino acids and their salts, and (c3) ionic surfactants. The present invention is based on this finding. In other words, the gist of the present invention is as follows.

[0010] [1] Component (A) Zinc compound, Component (B) Silicate compound, and Component (C) is one or more ionic components selected from the group consisting of (c1) condensed phosphoric acid and its salts, (c2) amino acids and their salts, and (c3) ionic surfactants. A deodorizing composition containing [the specified ingredient]. [2] The deodorizing composition according to [1], wherein component (A) contains zinc oxide. [3] The deodorizing composition according to [1] or [2], comprising the component (B) silica. [4] The deodorizing composition according to any one of [1] to [3], wherein the component (c1) condensed phosphate comprises one or more selected from the group consisting of polyphosphate, metaphosphate, pyrophosphate and salts thereof. [5] The deodorizing composition according to any one of [1] to [4], wherein the component (c2) amino acid comprises one or more selected from the group consisting of glycine, glutamic acid, arginine and salts thereof. [6] The deodorizing composition according to any one of [1] to [5], wherein the component (c3) ionic surfactant comprises one or more selected from the group consisting of anionic surfactants, amphoteric surfactants and cationic surfactants. [7] The deodorizing composition according to any one of [1] to [6], wherein the component (c3) ionic surfactant comprises one or more selected from the group consisting of lauryl sulfate, lauroyl sarcosine, coconut oil fatty acid amidopropyl betaine, cetylpyridinium chloride and salts thereof. [8] The deodorizing composition according to any one of [1] to [7], wherein the content of component (A) is 0.01 to 20% by mass relative to the total mass of the deodorizing composition. [9] The deodorizing composition according to any one of [1] to [8], wherein the content of component (B) is 0.01 to 50% by mass relative to the total mass of the deodorizing composition.

[10] The deodorizing composition according to any one of [1] to [9], wherein the content of component (C) is 0.001 to 15% by mass relative to the total mass of the deodorizing composition.

[11] The deodorizing composition according to [1] to

[10] , which removes the odor caused by methyl mercaptan.

[12] The deodorizing composition according to any one of [1] to

[11] , which is an oral composition.

[13] The deodorizing composition according to any one of [1] to

[12] , which is a dentifrice, a mouthwash or an oral moisturizer.

Advantages of the Invention

[0011] According to the present invention, in the deodorizing composition, it is possible to improve the effect of removing the malodor caused by methyl mercaptan as compared with the prior art.

Embodiments for Carrying out the Invention

[0012] [Deodorizing Composition] According to one aspect of the present invention, there is provided a deodorizing composition (hereinafter also referred to as "the deodorizing composition of the present invention") having an improved effect of removing the odor caused by methyl mercaptan (for example, malodors such as halitosis and stress odor). The deodorizing composition of the present invention contains component (A) a zinc compound, component (B) a silicic acid compound, and as component (C), one or more selected from the group consisting of (c1) condensed phosphoric acid and its salts, (c2) amino acids and their salts, and (c3) anionic surfactants. By containing the three components (A) to (C) described above, the deodorizing composition of the present invention exhibits an improved effect of removing the malodor caused by methyl mercaptan as compared with the prior art. In particular, by combining the three components (A) to (C), the effect of removing the malodor caused by methyl mercaptan can be dramatically improved as compared with the case of containing any one or two of the components (A) to (C). Note that, with respect to the deodorizing composition of the present invention, the "removal" of malodor is a concept including at least partial removal of the malodor in a subject already presenting malodor and suppression of at least partial generation of the malodor in a subject that may present malodor. Hereinafter, each component will be described in detail.

[0013] Component (A) The deodorizing composition of the present invention contains a zinc compound (component (A)) as an essential component. Since the zinc compound can adsorb malodorous components including methyl mercaptan, the deodorizing composition containing the zinc compound exhibits a removing (deodorizing) effect on malodors containing methyl mercaptan as a causative substance. In particular, the zinc compound can exhibit the ability to remove the malodor caused by methyl mercaptan even alone, but by combining it with components (B) and (C) described later, the ability to remove the malodor caused by methyl mercaptan can be dramatically improved.

[0014] The zinc compound means a compound containing zinc (element symbol Zn). The zinc compound used in the present invention is not particularly limited as long as the effects of the present invention are achieved. Examples thereof include zinc organic acid salts, inorganic acid salts, amino acid salts, halides, oxides, and the like. The zinc compound may be used alone or in combination of two or more.

[0015] Specific zinc compounds include zinc chloride, zinc PCA (zinc salt of pyrrolidonecarboxylic acid), zinc gluconate, zinc sulfate, zinc citrate, zinc malate, zinc salicylate, zinc lactate, zinc para-phenolsulfonate, zinc acetate, zinc fluoride, zinc nitrate, zinc formate, zinc bromate, zinc benzoate, zinc hydroxide, zinc carbonate, zinc fluorophosphate, zinc oxide, zinc tartrate, zinc glycine, zinc sorbate, zinc mandelate, zinc pantothenate, zinc glycerophosphate, zinc cinnamate, zinc phytate, zinc pyrophosphate, zinc aspartate, zinc glutamate, zinc oxalate, zinc stearate, zinc laurate, zinc glycyrrhetinate, and the like. In one preferred embodiment, zinc oxide is used as the zinc compound.

[0016] The content of component (A) in the deodorizing composition of the present invention is not particularly limited as long as the effects of the present invention are achieved, but is preferably 0.01 to 20% by mass, more preferably 0.05 to 10% by mass, and particularly preferably 0.1 to 5% by mass, based on the total mass of the deodorizing composition of the present invention. By setting the content of component (A) to 0.01% by mass or more, the deodorizing composition can be given deodorizing ability (i.e., the ability to remove malodors caused by methyl mercaptan). In particular, by setting the content of component (A) to 0.01% by mass or more, the ability to remove malodors caused by methyl mercaptan can be dramatically improved in combination with components (B) and (C). On the other hand, by setting the content of component (A) to 20% by mass or less, the feel of the deodorizing composition can be made even better.

[0017] Ingredient (B) The deodorizing composition of the present invention contains a silicate compound (component (B)) as an essential component. While silicate compounds alone may not be able to remove malodors caused by methyl mercaptan, or if they can, their ability is weak, combining them with component (A) and (C) described later dramatically improves their ability to remove malodors caused by methyl mercaptan. The zinc compounds mentioned above, particularly zinc oxide, are known to aggregate easily in their elemental form. Therefore, when zinc compounds are used alone, aggregation reduces their surface area, which is thought to decrease the adsorption efficiency of malodor components caused by methyl mercaptan. On the other hand, silicate compounds can adsorb zinc compounds, particularly zinc oxide, onto their surface to form a complex. This suppresses the aggregation of zinc compounds and the resulting reduction in surface area, thereby suppressing the decrease in the adsorption efficiency of malodor components caused by methyl mercaptan. Note that if the deodorizing composition of the present invention contains a component that corresponds to both component (A) and (B), that component shall be considered to correspond to component (A).

[0018] Silicate compounds are those with the general formula [SiO₂] x (OH) 4-2x ] nThis refers to silicic acid represented by (x is a non-negative integer and n is a natural number), and derivatives of silicic acid that mainly have the structure of silicic acid, such as silicates. The silicic acid compounds used in the present invention are not particularly limited as long as the effects of the present invention are achieved, but examples include silicon dioxide (also called silica, anhydrous silicic acid, hydrated silicic acid, silicic acid, silicon oxide, etc.), metal silicate salts (e.g., sodium silicate, potassium silicate, aluminum silicate, calcium silicate, magnesium silicate, sodium magnesium silicate, aluminum magnesium silicate, etc.), metal metasilicate salts (e.g., magnesium aluminosilicate, magnesium aluminometasilicate, etc.), diatomaceous earth, bentonite, kaolin, talc, etc. In one preferred embodiment, silicon dioxide (silica) is used as the silicic acid compound.

[0019] The content of component (B) in the deodorizing composition of the present invention is not particularly limited as long as the effects of the present invention are achieved, but is preferably 0.01 to 50% by mass, more preferably 0.1 to 30% by mass, and particularly preferably 1 to 10% by mass, based on the total mass of the deodorizing composition of the present invention. By setting the content of component (B) to 0.01% by mass or more, the ability to remove malodors caused by methyl mercaptan can be dramatically improved in combination with components (A) and (C). On the other hand, by setting the content of component (B) to 50% by mass or less, the feel of the deodorizing composition can be made even better.

[0020] The relationship between the content of component (A) and component (B) described above is not particularly limited as long as the effects of the present invention are achieved, but the ratio of the mass of component (A) to the mass of component (B) (mass of component (A) / mass of component (B)) is preferably 0.0002 to 2000, more preferably 0.002 to 100, and particularly preferably 0.01 to 5. By setting the ratio of the mass of component (A) to the mass of component (B) to the range of 0.0002 to 2000, the ability to remove malodors caused by methyl mercaptan can be dramatically improved.

[0021] Ingredients (C) The deodorizing composition of the present invention contains, as an essential component, one or more ionic components (component (C)) selected from the group consisting of the following components (c1) to (c3). Component (c1) Condensed phosphoric acid and its salt Component (c2) Amino acids and their salts Ingredient (c3): Ionic surfactant Components (c1) to (c3) individually either cannot remove odors caused by methyl mercaptan, or if they can, their ability is weak. However, by combining them with components (A) and (B) described above, the ability to remove odors caused by methyl mercaptan can be dramatically improved. The ionic components act on zinc compounds and the complexes of zinc compounds and silicate compounds described above, repelling them through interionic interactions, thereby further suppressing their aggregation and precipitation, and consequently suppressing the decrease in the adsorption efficiency of odor components caused by methyl mercaptan. The ionic components may be used individually or in combination of two or more. Specifically, one of components (c1) to (c3) may be used individually or in combination of two or more. If the deodorizing composition of the present invention contains a component that corresponds to both component (A) and (C), that component shall be considered to correspond to component (A).

[0022] The condensed phosphoric acid of component (c1) is a compound formed by the condensation of three or more phosphoric acid molecules. The structure of the condensed phosphoric acid is not particularly limited and may be linear, branched, cyclic, or any other structure. Examples of condensed phosphoric acids include pyrophosphate, polyphosphate, tripolyphosphate, tetrapolyphosphate, metaphosphate, trimetaphosphate, tetrametaphosphate, hexametaphosphate, and ultraphosphate. The condensed phosphoric acid may be used alone or in combination of two or more types.

[0023] The salt of condensed phosphoric acid is not particularly limited as long as the effects of the present invention are achieved, and examples include alkali metal salts and alkaline earth metal salts, and more specifically, sodium salts, potassium salts, magnesium salts, calcium salts, etc.

[0024] In one preferred embodiment, component (c1) is one or more selected from polyphosphate, metaphosphate, pyrophosphate and salts thereof, and particularly preferably sodium polyphosphate and sodium pyrophosphate are used individually.

[0025] The amino acid in component (c2) can be any of neutral, acidic, or basic amino acids. Examples of neutral amino acids include aliphatic amino acids such as glycine, alanine, valine, leucine, and isoleucine; oxy amino acids (hydroxy amino acids) such as serine and threonine; sulfur-containing amino acids such as cysteine ​​and methionine; amino acid amides such as asparagine, glutamine, and theanine; imino acids such as proline; aromatic amino acids such as phenylalanine, tyrosine, and tryptophan; ε-aminocaproic acid; and tranexamic acid. Examples of acidic amino acids include aspartic acid and glutamic acid. Examples of basic amino acids include lysine, arginine, and histidine.

[0026] The amino acid salts are not particularly limited as long as the effects of the present invention are achieved, and examples include alkali metal salts and alkaline earth metal salts, and more specifically, sodium salts, potassium salts, magnesium salts, calcium salts, etc.

[0027] In one preferred embodiment, component (c2) is one or more selected from the group consisting of glycine, glutamic acid, arginine, and salts thereof, and glutamic acid, arginine, and glycine are particularly preferably used individually.

[0028] As the ionic surfactant of component (c3), any of anionic surfactants, cationic surfactants, or amphoteric (five-terrain) surfactants can be used. Furthermore, the ionic surfactant may be used alone or in combination of two or more types.

[0029] Examples of anionic surfactants include: fatty acid salts with 12 to 24 carbon atoms such as sodium laurate, potassium palmitate, and arginine stearate; alkyl sulfate esters such as sodium lauryl sulfate and potassium lauryl sulfate; alkyl ether sulfate esters such as polyoxyethylene lauryl sulfate triethanolamine; N-acyl sarcosinate salts such as sodium lauroyl sarcosinate; fatty acid amide sulfonates such as sodium N-stearoyl-N-methyltaurate and sodium N-myristoyl-N-methyltaurate; and sodium monostearyl phosphate. Examples include alkyl phosphates; polyoxyethylene alkyl ether phosphates such as sodium polyoxyethylene oleyl ether phosphate and sodium polyoxyethylene stearyl ether phosphate; long-chain sulfosuccinates such as sodium di-2-ethylhexyl sulfosuccinate; and long-chain N-acyl glutamates such as monosodium N-lauroyl glutamate, sodium N-stearoyl-L-glutamate, N-stearoyl-L-glutamate arginine, sodium N-stearoyl glutamate, and sodium N-myristoyl-L-glutamate. In one preferred embodiment, an anionic surfactant is used as component (c3), and sodium lauryl sulfate and sodium lauroyl sarcosinate are particularly preferred.

[0030] Examples of cationic surfactants include alkylpyridinium salts such as cetylpyridinium chloride; alkyltrimethylammonium salts such as steariumtrimethylammonium chloride and lauryltrimethylammonium chloride; dialkyldimethylammonium, trialkylmethylammonium salts, alkylamine salts, etc. In one preferred embodiment, a cationic surfactant is used as component (c3), and cetylpyridinium chloride is particularly preferred.

[0031] Examples of amphoteric surfactants include alkyldimethylamine oxide, alkylcarboxybetaine, alkylsulfobetaine, amide amino acid salts, and alkylamidopropyl betaine. In one preferred embodiment, an amphoteric surfactant is used as component (c3), and alkylamidopropyl betaine is particularly preferred, with coconut oil fatty acid amidopropyl betaine being especially preferred.

[0032] The content of component (C) in the deodorizing composition of the present invention is not particularly limited as long as the effects of the present invention are achieved, but is preferably 0.001 to 15% by mass, more preferably 0.05 to 10% by mass, and particularly preferably 0.01 to 5% by mass, based on the total mass of the deodorizing composition of the present invention. By setting the content of component (C) to 0.001% by mass or more, the ability to remove malodorous odors caused by methyl mercaptan can be dramatically improved in combination with components (A) and (B). On the other hand, by setting the content of component (C) to 15% by mass or less, the feel of the deodorizing composition can be made even better.

[0033] The relationship between the content of component (A) and component (C) described above is not particularly limited as long as the effects of the present invention are achieved, but the ratio of the mass of component (A) to the mass of component (C) (mass of component (A) / mass of component (C)) is preferably 0.0007 to 20000, more preferably 0.005 to 2000, and particularly preferably 0.02 to 500. By setting the ratio of the mass of component (A) to the mass of component (C) in the range of 0.0007 to 20000, the ability to remove malodors caused by methyl mercaptan can be dramatically improved.

[0034] Furthermore, the relationship between the content of component (B) and component (C) described above is not particularly limited as long as the effects of the present invention are achieved, but the ratio of the mass of component (B) to the mass of component (C) (mass of component (B) / mass of component (C)) is preferably 0.0007 to 50000, more preferably 0.01 to 6000, and particularly preferably 0.2 to 1000. By setting the ratio of the mass of component (B) to the mass of component (C) in the range of 0.0007 to 50000, the ability to remove malodors caused by methyl mercaptan can be dramatically improved.

[0035] (Other ingredients) In addition to the components (A) to (C) described above, the deodorizing composition of the present invention may optionally contain other components, such as abrasives, wetting agents, solvents, binders, fragrances, excipients, sweeteners, pH adjusters, preservatives, emulsifiers, solubilizers, foaming agents, lubricants, oils, chelating agents, dyes, pigments, antioxidants, flavoring agents, and other agents. These other components are commonly used in the design of pharmaceutical compositions, oral compositions, or food formulations, and can be appropriately selected within a range that does not impair the effects of the present invention, and can be incorporated into the deodorizing composition in appropriate amounts. These other components may be used individually or in combination of two or more.

[0036] Examples of abrasives include calcium carbonate, calcium phosphate, discalcium phosphate, calcium pyrophosphate, insoluble calcium metaphosphate, titanium dioxide, aluminum oxide, aluminum hydroxide, and resin. Abrasives may be used individually or in combination of two or more. The abrasive content is, for example, 3 to 60% by mass of the total mass of the deodorizing composition of the present invention.

[0037] Examples of humectants include polyhydric alcohols such as glycerin, sorbitol, polyethylene glycol, propylene glycol, ethylene glycol, 1,3-butylene glycol, polypropylene glycol, xylitol, maltitol, and lactitol. A single humectant may be used, or two or more may be used in combination. The content of the humectant is, for example, 0.1 to 50% by mass of the total mass of the deodorizing composition of the present invention.

[0038] Examples of solvents include water and organic solvents (e.g., alcohols such as ethanol, propyl alcohol, and isopropyl alcohol), with water being particularly preferred. The solvent may be used alone or in combination of two or more. These alcohols can be blended individually or in combination of two or more. The solvent content is, for example, 99% by mass or less of the total mass of the deodorizing composition of the present invention.

[0039] Examples of binders include cellulose derivatives such as carrageenan, carboxymethylcellulose, sodium carboxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, and hydroxypropylmethylcellulose; alkali metal alginates such as sodium alginate; gums such as xanthan gum, tragacanth gum, and gum arabic; synthetic binders such as polyvinyl alcohol and sodium polyacrylate; and inorganic binders such as silica gel, aluminum silica gel, and bee gum. A single binder may be used, or two or more may be used in combination. The binder content is, for example, 0.5 to 10% by mass of the total mass of the deodorizing composition of the present invention.

[0040] Examples of fragrances include known fragrance materials, such as blended fragrances of strawberry, apple, banana, pineapple, grape, mango, butter, milk, fruit mix, and tropical fruit flavors. One fragrance may be used alone, or two or more may be used in combination. The fragrance content is, for example, 0.0001 to 1.0% by mass of the total mass of the deodorizing composition of the present invention.

[0041] Examples of excipients include sucrose, lactose, starch, glucose, crystalline cellulose, mannitol, sorbitol, xylitol, erythritol, palatinitol, palatinose, maltitol, trehalose, lactitol, lactulose, reduced starch sugar, reduced isomaltoligosaccharide, coupling sugar, gum base, gum arabic, gelatin, cetyl methylcellulose, light anhydrous silicic acid, magnesium aluminate, calcium aluminometasilicate, sodium bicarbonate, calcium phosphate, etc. Excipients may be used individually or in combination of two or more. The excipient content is, for example, 0.01 to 30% by mass of the total mass of the deodorizing composition of the present invention.

[0042] Examples of sweeteners include palatinite, aspartame, sodium saccharin, acesulfame potassium, stevioside, neohesperidyl dihydrochalcone, glycyrrhizin, perillalumin, thaumatin, aspartylphenylalanyl methyl ester, and ρ-methoxycinnamic aldehyde. A single sweetener may be used, or two or more may be used in combination. The sweetener content is, for example, 0.01 to 1% by mass relative to the total mass of the deodorizing composition of the present invention.

[0043] Examples of pH adjusting agents include citric acid, phosphoric acid, pantothenic acid, malic acid, pyrophosphate, lactic acid, tartaric acid, glycerophosphate, acetic acid, nitric acid, and chemically possible salts thereof such as disodium hydrogen phosphate, as well as sodium hydroxide. One pH adjusting agent may be used alone, or two or more may be used in combination. The content of the pH adjusting agent is, for example, 0.01 to 2% by mass of the total mass of the deodorizing composition of the present invention.

[0044] Examples of preservatives include para-hydroxybenzoic acid esters, benzoic acid and its salts, salicylic acid and its salts, sorbic acid and its salts, phenoxyethanol, and alkyldiaminoethylglycine hydrochloride. A single preservative may be used, or two or more may be used in combination. The preservative content is, for example, 0.005 to 5% by mass of the total mass of the deodorizing composition of the present invention.

[0045] Examples of emulsifiers include polyoxyethylene alkyl ethers, polyoxyethylene fatty acid esters, polyoxyethylene sorbitan fatty acid esters, sorbitan fatty acid esters, glycerin fatty acid esters, polyglycerin fatty acid esters, polyoxyethylene hydrogenated castor oil, sodium stearoyl lactylate, soybean phospholipids, and alkyltrimethylammonium chloride. One emulsifier may be used alone, or two or more may be used in combination. The emulsifier content is, for example, 0.05 to 30% by mass of the total mass of the deodorizing composition of the present invention.

[0046] Examples of solubilizing agents include esters, polyethylene glycol derivatives, polyoxyethylene hydrogenated castor oil, sorbitan fatty acid esters, and sulfated fatty alcohols. One solubilizing agent may be used alone, or two or more may be used in combination. The content of the solubilizing agent is, for example, 0.05 to 30% by mass of the total mass of the deodorizing composition of the present invention.

[0047] Examples of foaming agents include sodium lauryl sulfate, sodium lauroyl sarcosinate, sodium alkyl sulfosuccinate, sodium coconut oil fatty acid monoglycerin sulfonate, sodium α-olefin sulfonate, N-acyl amino acid salts such as N-acyl glutamate, 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, maltitol fatty acid esters, sucrose fatty acid esters, polyglycerin fatty acid esters, fatty acid diethanolamide, polyoxyethylene sorbitan monostearate, polyoxyethylene hydrogenated castor oil, and polyoxyethylene fatty acid esters. Foaming agents may be used individually or in combination of two or more.

[0048] Examples of lubricants include magnesium stearate, sucrose fatty acid esters, talc, and hydrogenated oils.

[0049] Examples of oils include terpenoid essential oils used as antibacterial components (e.g., peppermint oil, eucalyptus oil, orange oil, turpentine oil, peppermint oil, spearmint oil, camphor oil, cime oil, perilla oil, tea tree oil, lemon oil, sage oil, rosemary oil, 1-limonene, 1-menthol, menthone, α-pinene, citral, cineole, camphor, etc.) and phenylpropanoid essential oils (e.g., clove oil, fennel oil, cinnamon oil, eugenol, anethole, cinnamaldehyde, cinnamaldehyde, etc.), as well as oils other than those used as fragrances as described above, such as coconut oil, olive oil, sesame oil, peanut oil, parsley oil, parsley seed oil, and safflower oil. Oils may be used individually or in combination of two or more types.

[0050] Examples of chelating agents include pyrophosphate or its salts, polyphosphate or its salts, metaphosphate or its salts, phytic acid or its salts, hydroxyethanediphosphonic acid or its salts, aminotrimethylenephosphonic acid or its salts, ethylenediaminetetramethylenephosphonic acid or its salts, phosphonobutanetricarboxylic acid or its salts, EDTA or its salts, nitrilotriacetic acid (NTA) or its salts, hydroxyethyliminodiacetic acid (HIDA) or its salts, tetrasodium 3-hydroxy-2,2'-iminodisuccinate (HIDS) or its salts, diethylenetriaminepentaacetic acid (DPTA) or its salts, hydroxyethyl Examples include ethylenediaminetriacetic acid (HEDTA) or its salts, dihydroxyethylglycine (DHEG) or its salts, L-glutamic acid diacetic acid (GLDA) or its salts, methylglycine diacetic acid (MGDA), aspartic acid or its salts, glutamic acid or its salts, citric acid or its salts, malic acid or its salts, tartaric acid or its salts, gluconic acid or its salts, lactic acid or its salts, mandelic acid or its salts, glycolic acid or its salts or its salts, oxalic acid or its salts, maleic acid or its salts, malonic acid or its salts, succinic acid or its salts, pantothenic acid or its salts, phthalic acid or its salts, fumaric acid or its salts, etc. The chelating agent may be used alone or in combination of two or more types. The content of the chelating agent is, for example, 0 to 30% by mass of the total mass of the deodorizing composition of the present invention.

[0051] In addition to the ingredients mentioned above, the product may also contain, for example, a dye such as Blue No. 1, a pigment such as titanium dioxide, an antioxidant such as dibutylhydroxytoluene, a tea extract, a tea distillate, a flavoring agent such as sodium glutamate, and so on.

[0052] The deodorizing composition of the present invention may further contain medicinal ingredients such as humectants, antibacterial agents, anti-inflammatory agents, fluorides, vitamins, and herbal extracts. These medicinal ingredients can be appropriately selected from those that can be used in pharmaceuticals, foods, cosmetics, and oral compositions.

[0053] Examples of moisturizers include amino acids and their salts, pyrrolidone carboxylic acid, mucin, hyaluronic acid and its salts, mucopolysaccharides such as chondroitin sulfate, sodium lactate, urea, panthenol, natural extracts such as aloe extract, rosemary extract, thyme extract, and tea extract (tea distillate extract), as well as so-called extracellular matrix components such as collagen and elastin. Moisturizers may be used individually or in combination of two or more.

[0054] Examples of antibacterial agents include cetylpyridinium chloride, benzalkonium chloride, benzethonium chloride, decalinium chloride, chlorhexidine hydrochloride, chlorhexidine gluconate, bisabolol chlorhexidine, lactoferrin, parabens, and butylparabens. Antibacterial agents may be used individually or in combination of two or more.

[0055] Examples of anti-inflammatory agents include lysozyme chloride, ε-aminocaproic acid, aluminum hydroxyl allantoin, glycyrrhetinic acid, glycyrrhizinates, guaiazulene sulfonic acid, and dl-α-tocopherol acetate. Anti-inflammatory agents may be used individually or in combination of two or more.

[0056] Examples of fluorides include sodium fluoride, potassium fluoride, sodium monofluorophosphate, and stannous fluoride. Fluorides may be used individually or in combination of two or more.

[0057] Examples of vitamin supplements include vitamin A compounds such as retinoic acid and beta-carotene, pantothenic acid and its salts, vitamin B compounds such as niacin and biotin, vitamin C compounds such as ascorbic acid and its salts and derivatives, vitamin E compounds such as alpha-tocopherol, and folic acid. Vitamin supplements may be used individually or in combination of two or more types.

[0058] Examples of herbal extracts include chamomile extract, valerian extract, jujube extract, hop extract, ramender extract, linden extract, quince extract, honeysuckle extract, bamboo grass extract, elm extract, clove extract, ginseng extract, salvia extract, and soapberry extract. These herbal extracts may be used individually or in combination of two or more.

[0059] The content of the above-mentioned humectants, antibacterial agents, anti-inflammatory agents, fluorides, vitamins, herbal extracts, and other medicinal ingredients in the deodorizing composition of the present invention is not particularly limited as long as the effects of the present invention are achieved, and is, for example, 0.001 to 5.0% by mass, preferably 0.01 to 1.0% by mass.

[0060] The deodorizing composition of the present invention can be in various forms depending on its application. Examples of forms of the deodorizing composition of the present invention include liquid (e.g., emulsion, solubilized), gel, paste, tablet, effervescent tablet, powder, granules, etc.

[0061] The deodorizing composition of the present invention can be used as various compositions such as oral compositions, cosmetic compositions, detergent compositions, and skin compositions. The oral composition is intended to remove malodorous odors, particularly those caused by methyl mercaptan, from the oral cavity of humans or non-human animals (e.g., oral mucosa such as the buccal mucosa, tongue, gums, teeth, etc.). Examples of oral compositions include toothpaste, liquid toothpaste, mouthwash, and oral humectants.

[0062] Examples of cosmetic compositions include lotions, facial cleansers, makeup removers, emulsions, creams, eyeliners, serums, ointments, oils, and face masks.

[0063] Examples of detergent compositions include oral (especially tooth) related detergents such as denture cleaners (liquids, powders, tablets, etc.), hair related detergents such as shampoos, rinses, body washes, and conditioners, and general household detergents such as soaps, hand soaps, liquid detergents, kitchen detergents, dishwashing detergents, bathroom detergents, toilet cleaners, and pipe cleaners.

[0064] [Methods for removing bad odors] According to another aspect of the present invention, a method for removing malodorous odors, particularly those caused by methyl mercaptan, from a target (hereinafter also referred to as "the method of the present invention") is provided. The method of the present invention can remove at least a portion of the malodorous odor by applying the deodorizing composition of the present invention to a target that already exhibits a malodorous odor by coating or immersion. Furthermore, the method of the present invention can also suppress the generation of at least a portion of the malodorous odor by applying the deodorizing composition of the present invention in advance to a target that may exhibit a malodorous odor by coating or immersion. Examples of targets to which the deodorizing composition of the present invention is applied include the oral cavity (e.g., oral mucosa such as the buccal mucosa, tongue, gums, teeth, etc.), the surfaces of human and non-human animals such as hair and skin, dentures, tableware, kitchens, kitchen utensils, toilets, toilet supplies, bathrooms, bathroom supplies, pipes, furniture, walls, and other non-living surfaces. The amount of deodorizing composition applied to the target is not particularly limited as long as the effects of the present invention are achieved, but for example, 1 cm 3 For example, 0.01 to 2 g per unit, preferably 0.05 to 1.5 g, more preferably 0.1 to 1 g, or 1 cm 3 For example, around 0.01 to 1 cm 3 Preferably 0.05 to 0.7 cm 3 , more preferably 0.1 to 0.4 cm 3 It can be done this way. [Examples]

[0065] The present invention will be described in more detail below based on examples, but the present invention is not limited to these examples. In Tables 1 and 2 below, the values ​​for each component represent the mass % of the total mass of the deodorizing composition.

[0066] [Preparation of deodorizing compositions] The deodorizing compositions for Examples 1-15 and Comparative Examples 1-11 were prepared by mixing the components shown in Tables 1 and 2 in the amounts shown in the same tables.

[0067] [Table 1]

[0068] [Table 2]

[0069] [Evaluation of deodorizing ability] 1 mL of distilled water was placed in a rubber-stoppered vial, and the vial was sealed with the rubber stopper to prevent the evaporation of volatile components. Next, 10 μL of a 100 μg / mL methyl mercaptan solution was added to the sealed vial through the rubber stopper using a microsyringe. After incubation at 37°C for 5 minutes, 100 μL of methyl mercaptan in the gas phase was collected using a gas-tight syringe and measured by gas chromatography (GC-2014, Shimadzu Corporation). After measurement, 1 mL of the methyl mercaptan deodorizing composition of the example or comparative example, or distilled water, was added to the vial through the rubber stopper, and after shaking for 3 minutes, 100 μL of the gas in the gas phase was collected using a gas-tight syringe, and the concentration of methyl mercaptan in the gas was measured by gas chromatography. Next, the methyl mercaptan concentration in the gas phase of the control vial containing distilled water was set to 100%, and the remaining percentage (%) of methyl mercaptan for each deodorizing composition in the Examples and Comparative Examples was calculated based on the methyl mercaptan concentration in the gas phase of the vials containing each of the deodorizing compositions in the Examples and Comparative Examples. The results are shown in Tables 1 and 2.

[0070] The results shown in Table 1 indicate that each deodorizing composition in Examples 1 to 15, containing components (A) to (C), exhibits superior deodorizing ability compared to the control (methyl mercaptan retention rate of 100%). Furthermore, a comparison of the methyl mercaptan retention rates of each deodorizing composition in Examples 1 to 15 with those of each deodorizing composition in Comparative Examples 1 to 11 shows that combining components (A) to (C) results in dramatically improved deodorizing ability compared to the case where only one or two of components (A) to (C) are contained.

[0071] [Example prescription] The following are examples of formulations of the deodorizing composition of the present invention, prepared by mixing the components described herein. The units of the amounts are in mass%, where the total deodorizing composition is considered to be 100% by mass.

[0072] <Example prescription 1: Gel toothpaste> Zinc oxide 1.0 Silica 5.0 Sodium pyrophosphate 1.0 Cetylpyridinium chloride 0.05 Sodium lauroyl sarcosinate 0.1 Hydroxyethylcellulose 1.0 Sodium hydroxide 0.4 Sodium fluoride 0.1 70% sorbitol solution 10 Concentrated glycerin 30 Dipotassium glycyrrhizinate 0.1 Isopropylmethylphenol 0.1 Polyoxyethylene hydrogenated castor oil 0.5 Glycerin fatty acid ester 0.5 Sodium hyaluronate 0.01 Fragrance 1.0 Purified water remainder Total 100%

[0073] <Prescription Example 2: Toothpaste> Zinc oxide 1.0 Silica 10 Sodium polyphosphate 1.0 Glycine 1.0 Glutamic acid 1.0 Arginine 1.0 Sodium lauryl sulfate 1.0 Coconut oil fatty acid amidopropyl betaine 1.0 Cetylpyridinium chloride 0.05 Sodium metaphosphate 1.0 Zeolite 1.0 Calcium carbonate 1.0 Sodium dihydrogen phosphate 1.0 Titanium dioxide 0.3 Sodium carboxymethylcellulose 1.5 Sodium monofluorophosphate 0.1 Sodium saccharin 0.1 Sodium lauroyl methyl taurate 0.5 Isopropylmethylphenol 0.1 70% sorbitol solution 10 Concentrated glycerin 20 Polyoxyethylene hydrogenated castor oil 1.0 Ethanol 1.0 Fragrance 1.0 Purified water remainder Total 100%

[0074] <Prescription Example 3: Liquid Toothpaste> Zinc oxide 1.0 Silica 1.0 Glutamic acid 1.0 Cetylpyridinium chloride 0.05 Sucrose fatty acid ester 1.0 Citric acid 1.0 Sodium hydroxide 0.42 Xylitol 1.0 Dipotassium glycyrrhizinate 0.1 Concentrated glycerin 30 Polyoxyethylene hydrogenated castor oil 0.5 Fragrance 1.0 Purified water remainder Total 100%

[0075] <Prescription Example 4: Non-water-based toothpaste> Zinc oxide 1.0 Anhydrous silicic acid 10 Hydrated silica 5.0 Sodium pyrophosphate 1.0 Sodium lauryl sulfate 1.0 Cetylpyridinium chloride 0.05 Zeolite 1.0 Aspartic acid 0.5 Titanium dioxide 1.0 Hydroxypropylcellulose 1.0 Hydroxypropyl methylcellulose 1.0 Polyvinylpyrrolidone 1.0 Sodium fluoride 0.1 Glycyrrhetinic acid 0.1 Sodium saccharin 0.1 Concentrated glycerin 20 Glycerin fatty acid ester 0.5 Fragrance 1.0 Propylene glycol remainder Total 100%

[0076] The gel toothpaste, paste toothpaste, liquid toothpaste, and non-aqueous paste toothpaste described in the above formulation examples were all confirmed to exhibit good deodorizing ability (ability to remove malodors caused by methyl mercaptan). [Industrial applicability]

[0077] According to the present invention, it is possible to provide a deodorizing composition that has an improved effect in removing malodors caused by methyl mercaptan compared to the prior art.

Claims

1. Component (A) Zinc compound, Component (B) Silicate compound, and Component (C) is one or more ionic components selected from the group consisting of (c1) condensed phosphoric acid and its salts, (c2) amino acids and their salts, and (c3) ionic surfactants. A deodorizing composition containing [the specified ingredient].

2. The deodorizing composition according to claim 1, wherein component (A) contains zinc oxide.

3. The deodorizing composition according to claim 1, comprising the aforementioned component (B) silica.

4. The deodorizing composition according to claim 1, wherein the component (c1) condensed phosphate comprises one or more selected from the group consisting of polyphosphate, metaphosphate, pyrophosphate and salts thereof.

5. The deodorizing composition according to claim 1, wherein the component (c2) amino acid comprises one or more selected from the group consisting of glycine, glutamic acid, arginine, and salts thereof.

6. The deodorizing composition according to claim 1, wherein the component (c3) ionic surfactant comprises one or more selected from the group consisting of anionic surfactants, amphoteric surfactants, and cationic surfactants.

7. The deodorizing composition according to claim 1, wherein the component (c3) ionic surfactant comprises one or more selected from the group consisting of lauryl sulfate, lauroyl sarcosine, coconut oil fatty acid amidopropyl betaine, cetylpyridinium chloride, and salts thereof.

8. The deodorizing composition according to claim 1, wherein the content of component (A) is 0.01 to 20% by mass relative to the total mass of the deodorizing composition.

9. The deodorizing composition according to claim 1, wherein the content of component (B) is 0.01 to 50% by mass relative to the total mass of the deodorizing composition.

10. The deodorizing composition according to claim 1, wherein the content of component (C) is 0.001 to 15% by mass relative to the total mass of the deodorizing composition.

11. The deodorizing composition according to claim 1, which removes odors caused by methyl mercaptan.

12. The deodorizing composition according to claim 1, which is an oral composition.

13. The deodorizing composition according to claim 12, which is a toothpaste, mouthwash, or oral moisturizer.

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