Deodorizing agent, resin composition, dispersion, deodorizing fiber, and inorganic particle

Abstract

This deodorizing agent contains inorganic particles having a hydrophobized surface.

Description

Deodorizers, resin compositions, dispersions, deodorizing fibers, inorganic particles

[0001] The present invention relates to deodorants, resin compositions, dispersions, deodorizing fibers, and inorganic particles.

[0002] In recent years, the demand for deodorizers has increased in order to improve the comfort of living environments. In particular, there is a need for products that reduce or eliminate unpleasant odors in indoor spaces, clothing, cars, shoes, etc.

[0003] For example, Patent Document 1, with the objective of providing a deodorant with good spinnability and high deodorizing performance against basic gases, discloses "a deodorant for textiles containing α-zirconium phosphate and / or α-titanium phosphate, wherein the particle size has a median diameter of 0.2 to 0.7 μm, a maximum particle diameter of 5.0 μm or less, and a D10 diameter of 0.1 μm or more."

[0004] Furthermore, Patent Document 2, with the objective of providing inorganic particles for fibers that have a low yarn breakage rate during spinning, discloses "inorganic particles for fibers in which the content of coarse particles with a particle size exceeding 1.562 μm, as measured by the electrical detection band method, is 1,500 ppm or less."

[0005] Japanese Patent Publication No. 2018-178313, International Publication No. 2020 / 218206

[0006] Fibers are commonly subjected to alkaline treatment (for example, treatment with an aqueous sodium hydroxide solution) for various purposes such as scouring, bleaching, and dyeing. However, when fibers containing inorganic particles used as deodorizers are subjected to alkaline treatment, the inorganic particles may react with the alkali, reducing their deodorizing performance (gas adsorption performance).

[0007] The present invention aims to provide a deodorant that is resistant to alkaline treatment.

[0008] By making the surface of inorganic particles used as deodorants hydrophobic, resistance to alkaline treatment can be imparted to the inorganic particles.

[0009] The present invention includes the following embodiments: [1] A deodorant comprising inorganic particles having a hydrophobic surface. [2] The deodorant according to [1], wherein the inorganic particles comprise at least one selected from the group consisting of phosphates and silicates. [3] The deodorant according to [1] or [2], wherein the inorganic particles comprise at least one selected from the group consisting of zirconium phosphate, titanium phosphate, and aluminum silicate. [3-1] The deodorant according to any one of [1] to [3], wherein the inorganic particles comprise zirconium phosphate. [4] The deodorant according to any one of [1] to [3-1], wherein the inorganic particles comprise α-type zirconium phosphate. [5] The deodorant according to any one of [1] to [4], wherein the volume-based median diameter of the inorganic particles is 0.1 μm to 30 μm. [5-1] The deodorant according to any one of [1] to [5], wherein the volume-based median diameter of the inorganic particles is 0.1 μm to 3.0 μm. [5-2] The deodorant according to any one of [1] to [5-1], wherein the volume-based median diameter of the inorganic particles is 0.2 μm to 2.0 μm. [5-3] The deodorant according to any one of [1] to [5-2], wherein the volume-based median diameter of the inorganic particles is 0.3 μm to 1.0 μm. [6] The deodorant according to any one of [1] to [5-3], wherein the hydrophobicity is due to an organic compound. [7] The deodorant according to [6], wherein the organic compound comprises at least one selected from the group consisting of silane compounds, surfactants, and fatty acids. [8] The deodorant according to [6] or [7], wherein the organic compound comprises a silane compound. [9] The deodorant according to [8], wherein the silane compound is an alkoxysilane. [9-1] The silane compound is a compound represented by the following formula (1), R １ ｎ -Si(OR ２ ) ４－ｎ ...(1) [wherein, R １ It is a hydrophobic group, R ２ [1] is an alkyl group, and n is an integer from 1 to 3. Deodorant according to [8] or [9]. [9-2] R １ However, the deodorant described in [9-1] is a hydrocarbon group. [9-3] R １The deodorant according to [9-1] or [9-2], which is an alkyl group, an alkenyl group, an alkynyl group, an aryl group, or any combination thereof. [9-4] R １ The deodorant according to any one of [9-1] to [9-3], wherein R is an alkyl group or an aryl group. [9-5] R １ The deodorant according to any one of [9-1] to [9-4], wherein R is an alkyl group. [9-6] R １ The deodorant according to any one of [9-1] to [9-5], wherein the number of carbon atoms of R is 1 to 40. [9-7] R １ The deodorant according to any one of [9-1] to [9-6], wherein the number of carbon atoms of R is 2 to 30. [9-8] R １ The deodorant according to any one of [9-1] to [9-7], wherein the number of carbon atoms of R is 4 to 24. [9-9] R １ The deodorant according to any one of [9-1] to [9-8], wherein the number of carbon atoms of R is 6 to 18. [9-10] R ２ The deodorant according to any one of [9-1] to [9-9], wherein the number of carbon atoms of R is 1 to 6. [9-11] R ２ The deodorant according to any one of [9-1] to [9-10], wherein the number of carbon atoms of R is 1 to 3. [9-12] R ２A deodorant according to any one of [9-1] to [9-11], wherein the carbon number of is 1 or 2.

[10] A deodorant according to any one of [1] to [9-12] for adsorbing a basic gas.

[11] The deodorant according to

[10] , wherein the basic gas comprises ammonia gas.

[12] A resin composition comprising the deodorant according to any one of [1] to

[11] , a resin, and .

[13] A dispersion comprising the deodorant according to any one of [1] to

[11] , a dispersion medium, and .

[14] A deodorant fiber comprising the deodorant according to any one of [1] to

[11] , a fiber, and .

[15] Inorganic particles having a hydrophobic surface.

[16] The inorganic particles according to

[15] , wherein the inorganic particles comprise at least one selected from the group consisting of phosphates and silicates.

[17] The inorganic particle according to

[15] or

[16] , wherein the inorganic particle comprises at least one selected from the group consisting of zirconium phosphate, titanium phosphate, and aluminum silicate. [17-1] The inorganic particle according to any one of

[15] to

[17] , wherein the inorganic particle comprises zirconium phosphate.

[18] The inorganic particle according to any one of

[15] to [17-1], wherein the inorganic particle comprises α-type zirconium phosphate.

[19] The inorganic particle according to any one of

[15] to

[18] , wherein the volume-based median diameter of the inorganic particle is 0.1 μm to 30 μm. [19-1] The inorganic particle according to any one of

[15] to

[19] , wherein the volume-based median diameter of the inorganic particle is 0.1 μm to 3.0 μm. [19-2] The inorganic particle according to any one of

[15] to [19-1], wherein the volume-based median diameter of the inorganic particle is 0.2 μm to 2.0 μm. [19-3] An inorganic particle according to any one of

[15] to [19-2], wherein the volume-based median diameter of the inorganic particle is 0.3 μm to 1.0 μm.

[20] An inorganic particle according to any one of

[15] to [19-3], wherein the hydrophobicization is hydrophobicization by an organic compound.

[21] An inorganic particle according to

[20] , wherein the organic compound comprises at least one selected from the group consisting of silane compounds, surfactants, and fatty acids.

[22] An inorganic particle according to

[20] or

[21] , wherein the organic compound comprises a silane compound.

[23] The inorganic particle according to

[22] , wherein the silane compound is an alkoxysilane. [23-1] R, wherein the silane compound is a compound represented by the following formula (1). １ ｎ -Si(OR ２ ) ４－ｎ ...(1) [wherein, R １ It is a hydrophobic group, R ２ [1] is an alkyl group, and n is an integer from 1 to 3.] The inorganic particles described in

[22] or

[23] . [23-2] R １ However, inorganic particles as described in [23-1], which are hydrocarbon groups. [23-3] R １ The inorganic particles according to [23-1] or [23-2], wherein the group is an alkyl group, an alkenyl group, an alkynyl group, an aryl group, or any combination thereof. [23-4] R １ However, the inorganic particles are an alkyl group or an aryl group, as described in any of [23-1] to [23-3]. [23-5] R １ However, inorganic particles as described in any of [23-1] to [23-4], which are alkyl groups. [23-6] R １ Inorganic particles according to any one of [23-1] to [23-5], wherein the number of carbon atoms is 1 to 40. [23-7] R １ Inorganic particles according to any of [23-1] to [23-6], wherein the number of carbon atoms is 2 to 30. [23-8] R １ Inorganic particles according to any of [23-1] to [23-7], wherein the number of carbon atoms is 4 to 24. [23-9] R １ Inorganic particles according to any of [23-1] to [23-8], wherein the number of carbon atoms is 6 to 18. [23-10] R ２ An inorganic particle according to any of [23-1] to [23-9], wherein the number of carbon atoms is 1 to 6. [23-11] R ２ Inorganic particles according to any of [23-1] to [23-10], wherein the number of carbon atoms is 1 to 3. [23-12] R ２Inorganic particles according to any one of [23-1] to [23-11], wherein the number of carbon atoms is 1 or 2.

[24] A resin composition comprising inorganic particles according to any one of

[15] to [23-12], a resin, and .

[25] A dispersion liquid comprising inorganic particles according to any one of

[15] to [23-12], a dispersion medium, and .

[26] A deodorizing fiber comprising inorganic particles according to any one of

[15] to [23-12], a fiber, and .

[0010] This invention can provide a deodorant that is resistant to alkaline treatment.

[0011] The solid H-NMR measurement results for α-type zirconium phosphate, the deodorant obtained in Example 6, and the deodorant from Example 6 after solvent treatment are shown.

[0012] The embodiments of the present invention will be described in detail below, but the present invention is not limited to these, and various modifications are possible without departing from the spirit of the invention.

[0013] <Deodorizer> One embodiment of the present invention relates to a deodorizer comprising inorganic particles having a hydrophobic surface.

[0014] The deodorant according to this embodiment has resistance to alkaline treatment.

[0015] "Alkali treatment" refers to treating deodorants with alkaline components. Alkali treatment is carried out on textiles and other materials for various purposes. Therefore, by having resistance to alkaline treatment, deodorants can fully exhibit their deodorizing performance even when used on textiles and other materials.

[0016] The reason why the deodorant according to this embodiment is resistant to alkaline treatment is presumed to be that the hydrophobic surface of the inorganic particles inhibits contact between the inorganic particles and the alkaline component, thereby preventing changes in the gas adsorption sites of the inorganic particles due to the alkaline component. However, the present invention is not limited in any way by the above reason.

[0017] The deodorant according to this embodiment preferably has further resistance to solvent treatment.

[0018] "Solvent treatment" means treating a deodorant with a solvent (e.g., an organic solvent). The solvent is used, for example, when making fibers. Therefore, since the deodorant has resistance to solvent treatment, the deodorant can fully exhibit its deodorizing performance even when used in fibers or the like.

[0019] The deodorant according to this embodiment can exhibit a deodorizing effect by adsorbing a gas. The gas is preferably a gas present in the air.

[0020] The gas to be adsorbed is not particularly limited as long as it is a malodorous gas. The gas may be only one kind or a combination of two or more kinds.

[0021] Examples of the types of gases include basic gases, acidic gases, aldehyde-based gases, VOC gases, and sulfur-based gases.

[0022] A "basic gas" is a volatile gas having a non-bonding electron pair. Examples of basic gases include ammonia, trimethylamine, pyridine, skatole, and hydrazine.

[0023] An "acidic gas" is a volatile gas having a free proton. Examples of acid gases include formic acid, acetic acid, propionic acid, butyric acid, valeric acid, isovaleric acid, hydrogen chloride, hydrogen bromide, carbonic acid, nitric acid, sulfuric acid, and hydrogen sulfide.

[0024] An "aldehyde-based gas" is a volatile gas having an aldehyde group (-CHO). Examples of aldehyde-based gases include formaldehyde, nonenal, acetaldehyde, propionaldehyde, n-butyraldehyde, isobutyraldehyde, n-valeraldehyde, and isovaleraldehyde.

[0025] "VOC gas" refers to organic compounds that have volatilized into the air, and are gases emitted by substances classified as very volatile organic compounds (VVOC), volatile organic compounds (VOC), semi-volatile organic compounds (SVOC), or particulate organic matter (POM) according to the classification method defined by the World Health Organization (WHO). Examples of VOC gases include toluene, styrene, benzene, ethyl acetate, methyl mercaptan, dichloromethane, ethanol, methyl ethyl ketone, trichloroethane, xylene, limonene, and L-nicotine.

[0026] "Sulfur-based gas" refers to a gas containing sulfur atoms. Examples of sulfur-based gases include hydrogen sulfide and methyl mercaptan.

[0027] (Inorganic particles) The deodorant according to this embodiment contains inorganic particles having a hydrophobic surface.

[0028] The inorganic particles may be only one type or a combination of two or more types.

[0029] The inorganic particles may have a function of adsorbing gas.

[0030] Examples of the inorganic particles include phosphates, silicates, metal hydroxides, and metal oxides.

[0031] Examples of the phosphates include zirconium phosphate and titanium phosphate.

[0032] Examples of the silicates include aluminum silicate, copper silicate, zinc silicate, manganese silicate, cobalt silicate, nickel silicate, zeolite, mica, kaolin, talc, and montmorillonite.

[0033] Examples of the metal hydroxides include zirconium hydroxide and hydrotalcite.

[0034] Examples of the metal oxides include, in addition to the above, alumina.

[0035] While not particularly limited, from the viewpoint of gas adsorption performance, the inorganic particles are preferably phosphates or silicates, more preferably zirconium phosphate, titanium phosphate, or aluminum silicate, and even more preferably α-type zirconium phosphate.

[0036] The deodorant according to this embodiment preferably substantially contains only zirconium phosphate, titanium phosphate, aluminum silicate, or any combination thereof as a metal component, more preferably substantially containing only zirconium phosphate, and even more preferably substantially containing only α-type zirconium phosphate. "Substantially contained" means contained for the purpose of exhibiting a specific effect. Therefore, if the deodorant contains a metal component as an impurity, it cannot be said that the deodorant substantially contains that impurity.

[0037] The deodorant according to this embodiment may or may not contain a metal component for antibacterial purposes. Examples of metal components for antibacterial purposes include silver, copper, zinc, tin, mercury, lead, iron, cobalt, nickel, manganese, arsenic, antimony, bismuth, barium, cadmium, and chromium, with silver being particularly important.

[0038] The volume-based median diameter (d50) of the inorganic particles is preferably 0.1 μm to 30 μm, more preferably 0.1 μm to 3.0 μm, even more preferably 0.2 μm to 2.0 μm, and particularly preferably 0.3 μm to 1.0 μm. Having the median diameter within this range tends to result in excellent gas adsorption performance even after alkali treatment and / or solvent treatment.

[0039] The volume-based median diameter (d50) of inorganic particles can be measured using a laser diffraction particle size analyzer. For example, the median diameter can be measured by measuring inorganic particles dispersed in water using the LA-950 laser diffraction particle size analyzer manufactured by Horiba, Ltd.

[0040] (Hydrophobic surface) Inorganic particles have a hydrophobic surface. Having a hydrophobic surface gives inorganic particles resistance to alkaline treatment.

[0041] "Hydrophobicization" refers to increasing the hydrophobicity of an inorganic particle's surface compared to its surface before hydrophobicization.

[0042] Methods for hydrophobization include, for example, reacting the surface of inorganic particles with a hydrophobic agent, and coating the surface of inorganic particles with a hydrophobic agent.

[0043] The hydrophobic agent can be a single type or a combination of two or more types.

[0044] The hydrophobic agent is preferably an organic compound, more preferably a silane compound, a surfactant, and a fatty acid, and even more preferably a silane compound.

[0045] The silane compound is preferably an alkoxysilane, and more preferably a compound represented by the following formula (1). １ ｎ -Si(OR ２ ) ４－ｎ ...(1) [wherein, R １ It is a hydrophobic group, R ２ [where n is an alkyl group and n is an integer between 1 and 3]

[0046] In equation (1), R １ The group is preferably a hydrocarbon group, more preferably an alkyl group, an alkenyl group, an alkynyl group, an aryl group, or any combination thereof, even more preferably an alkyl group, an aryl group, or any combination thereof, and particularly preferably an alkyl group. The alkyl group, the alkenyl group, and the alkynyl group may be linear, branched, or cyclic.

[0047] R １ The number of carbon atoms is preferably 1 to 40, more preferably 2 to 30, even more preferably 4 to 24, and even more preferably 6 to 18.

[0048] R １It may have a functional group bonded to a hydrocarbon group. Examples of functional groups include alkoxy groups, vinyl groups, epoxy groups, oxetanyl groups, (meth)acryloyl groups, (meth)acryloxy groups, amino groups, ureido groups, isocyanate groups, isocyanurate groups, and mercapto groups, as well as organic groups containing these groups (e.g., glycidyl ether groups).

[0049] In equation (1), R ２ Preferably, it is an alkyl group having 1 to 6 carbon atoms, more preferably an alkyl group having 1 to 3 carbon atoms, and even more preferably an alkyl group having 1 or 2 carbon atoms.

[0050] In formula (1), n ​​is preferably 1 or 2, and more preferably 1.

[0051] By using silane compounds, stronger resistance to alkaline treatment can be imparted. Furthermore, using silane compounds provides stronger resistance to solvent treatment than when using other hydrophobic agents.

[0052] Examples of silane compounds include the following: methyltrimethoxysilane, dimethyldimethoxysilane, phenyltrimethoxysilane, diphenyldimethoxysilane, n-propyltrimethoxysilane, hexyltrimethoxysilane, decyltrimethoxysilane, 1,6-bis(trimethoxysilyl)hexane, trifluoropropyltrimethoxysilane, tetraethoxysilane, methyltriethoxysilane, dimethyldiethoxysilane, phenyltriethoxysilane, n-propyltriethoxysilane, hexyltriethoxysilane, octyltriethoxysilane, octyltrimethoxysilane, hexamethyldisilazane, octadecanyltrimethoxysilane, benzyltriethoxysilane, methyltripoxysilane, octadecyltrimethoxysilane, hexadecyltrimethoxysilane, dodecyltrimethoxysilane, hexyltrimethoxysilane, and diphenyldiethoxysilane. Vinyltrimethoxysilane, vinyltriethoxysilane, vinyltris(β-methoxyethoxy)silane, vinyltriacetoxysilane, vinyltrichlorosilane, N-β-(N-vinylbenzylaminoethyl)-γ-aminopropyltrimethoxysilane hydrochloride. 2-(3,4-epoxycyclohexyl)ethyltrimethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylmethyldiethoxysilane, 3-glycidoxypropyltriethoxysilane, β-(3,4-epoxycyclohexyl)ethyltrimethoxysilane. p-styryltrimethoxysilane. 3-methacryloxypropylmethyldimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-methacryloxypropylmethyldiethoxysilane, 3-methacryloxypropyltriethoxysilane. 3-acryloxypropyltrimethoxysilane.N-2-(aminoethyl)-3-aminopropylmethyldimethoxysilane, N-2-(aminoethyl)-3-aminopropyltrimethoxysilane, 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-triethoxysilyl-N-(1,3-dimethylbutylidene)propylamine, N-phenyl-3-aminopropyltrimethoxysilane, hydrochloride salt of N-(vinylbenzyl)-2-aminoethyl-3-aminopropyltrimethoxysilane. 3-ureidopropyltrialkoxysilane, 3-ureidopropyltrimethoxysilane. 3-isocyanatetopropyltriethoxysilane. Tris-(trimethoxysilylpropyl)isocyanurate. 3-mercaptopropylmethyldimethoxysilane, 3-mercaptopropyltrimethoxysilane.

[0053] Examples of surfactants include cationic surfactants, anionic surfactants, amphoteric surfactants, and nonionic surfactants.

[0054] The surfactant is preferably a cationic surfactant, and more preferably a quaternary ammonium salt.

[0055] Examples of surfactants include the following compounds: Cationic surfactants: Dodecyldimethylbenzylammonium chloride, octyltrimethylammonium chloride, decyltrimethylammonium chloride, dodecyltrimethylammonium chloride, tetradecyltrimethylammonium chloride, cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, hexadecyltrimethylammonium bromide, benzyltrimethylammonium chloride, benzyltriethylammonium chloride, benzalkonium chloride, benzalkonium bromide, benzethonium chloride, didecyldimethylammonium chloride, distearyldimethylammonium chloride, butylpyridinium chloride, dodecylpyridinium chloride, cetylpyridinium chloride.

[0056] Anionic surfactants: Sodium octanoate, sodium decanoate, sodium laurate, sodium myristate, sodium palmitate, sodium stearate, perfluorononanoic acid, sodium N-lauroyl sarcosinate, sodium cocoyl glutamate, alpha-sulfo fatty acid methyl ester salts. Sodium 1-hexanesulfonate, sodium 1-octanesulfonate, sodium 1-decanesulfonate, sodium 1-dodecanesulfonate, perfluorobutanesulfonic acid, sodium linear alkylbenzenesulfonate, sodium toluenesulfonate, sodium cumenesulfonate, sodium octylbenzenesulfonate, sodium naphthalenesulfonate, disodium naphthalenedisulfonate, trisodium naphthalenetrisulfonate, sodium butylnaphthalenesulfonate. Sodium lauryl sulfate, sodium myristyl sulfate, sodium laureth sulfate, sodium polyoxyethylene alkylphenolsulfonate, ammonium lauryl sulfate. Lauryl phosphate, sodium lauryl phosphate, potassium lauryl phosphate.

[0057] • Amphoteric surfactants: Lauryldimethylaminoacetic acid betaine, stearyldimethylaminoacetic acid betaine, dodecylaminomethyldimethylsulfopropyl betaine, octadecylaminomethyldimethylsulfopropyl betaine, cocamidopropyl betaine, cocamidopropyl hydroxysultaine, 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, sodium lauroyl glutamate, potassium lauroyl glutamate, lauroylmethyl-β-alanine, lauryldimethylamine N-oxide, oleyldimethylamine N-oxide.

[0058] Nonionic surfactants: Glycerin laurate, glyceryl monostearate, sorbitan fatty acid ester, sucrose fatty acid ester. Polyoxyethylene alkyl ether, pentaethylene glycol monododecyl ether, octaethylene glycol monododecyl ether, polyoxyethylene alkylphenyl ether, octylphenol ethoxylate, nonylphenol ethoxylate, polyoxyethylene polyoxypropylene glycol. Polyoxyethylene glycerin fatty acid ester, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbitol fatty acid ester, polyoxyethylene hexitane fatty acid ester, sorbitan fatty acid ester polyethylene glycol. Lauric acid diethanolamide, oleic acid diethanolamide, stearate diethanolamide, cocamide diethanolamine. Octyl glucoside, decyl glucoside, lauryl glucoside. Cetanol, stearyl alcohol, oleyl alcohol.

[0059] The fatty acid is preferably a saturated or unsaturated fatty acid having 6 to 30 carbon atoms, more preferably a saturated or unsaturated fatty acid having 8 to 30 carbon atoms, even more preferably a saturated or unsaturated fatty acid having 12 to 26 carbon atoms, and particularly preferably a saturated or unsaturated fatty acid having 16 to 24 carbon atoms.

[0060] Examples of fatty acids include the following compounds: lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid, lignoceric acid, cerotic acid, montanic acid, palmitoleic acid, oleic acid, elaidic acid, ricinoleic acid, eicosenoic acid, erucic acid, linoleic acid, gamma-linolenic acid, alpha-linolenic acid, punicic acid, isostearic acid stearate, hydroxystearic acid, and lanolinic acid.

[0061] The inorganic particles having a hydrophobic surface according to this embodiment are preferably used as a deodorant, but can also be used for other purposes. Other applications include, for example, air purifiers, antibacterial agents, antifungal agents, antialgal agents, antiviral agents, adsorbents for harmful gases or volatile organic compounds, ion exchange agents, ion scavenging agents, water treatment adsorbents, heavy metal ion scavenging agents, fluoride ion removers, various harmful component removers, chromatography packing materials, packing materials for separation membranes or ion exchange membranes, electrolyte retaining materials, electrode additives for secondary batteries, fuel cells or electric double-layer capacitors, solid acid catalysts, acid-base catalysts or catalyst supports thereof, catalyst supports for polymer reactions, flame retardants or flame retardant aids, heat stabilizers, ultraviolet shielding agents, photocatalyst supports, adsorbents for adsorption refrigeration or heat storage, fillers, reinforcing materials, matting agents, light diffusing agents, thermal expansion inhibitors, conductivity control materials, water-repellent or oil-repellent agents, antistatic agents, and moisture-shielding materials.

[0062] <Resin Composition> One embodiment of the present invention relates to a resin composition comprising the above-mentioned deodorant and a resin. Another embodiment of the present invention relates to a resin composition comprising the above-mentioned inorganic particles and a resin.

[0063] The type of resin should be selected appropriately depending on the intended use of the resin composition.

[0064] The resin can be of one type only, or a combination of two or more types.

[0065] Examples of resins include polyester resin, polyamide resin, polyolefin resin, acrylic resin, polyurethane resin, and vinylon.

[0066] Examples of polyester resins include polyethylene terephthalate, polyethylene naphthalate, polytrimethylene terephthalate, and polybutylene terephthalate.

[0067] Examples of polyamide resins include nylon.

[0068] Examples of polyolefin resins include polyethylene, polypropylene, and polybutylene.

[0069] Examples of acrylic resins include polyacrylonitrile.

[0070] The amount of inorganic particles contained in the deodorant can be appropriately selected depending on the application of the resin composition. For example, the amount of inorganic particles may be 0.1 to 100 parts by mass, or 0.5 to 80 parts by mass, per 100 parts by mass of resin.

[0071] The resin composition may further contain optional additives depending on the application. Examples of additives include antioxidants, UV absorbers, flame retardants, softeners, antibacterial agents, antistatic agents, colorants, and plasticizers.

[0072] The applications of the resin composition according to this embodiment are not particularly limited, but examples include: various molding materials such as injection molding, extrusion molding, blow molding, compression molding, and calendering; resins for films, resins for sheets, resins for tubes, resins for fibers or nonwoven fabrics, resins for foams, binders for paints or coatings, primers, ink vehicles, adhesives, sealants, encapsulants, potting materials, prepregs, and resin compositions for lamination.

[0073] Molded articles, films, sheets, tubes, bottles, fibers, nonwoven fabrics, foams, coatings, or coating layers obtained from the resin composition according to this embodiment can be suitably used in applications such as automotive components (interior components, exterior components, electrical component housings, fuel system components, etc.), electrical and electronic components (connectors, sockets, bobbins, relay cases, switch components, coil spools, motor components, etc.), semiconductor encapsulants and electronic circuit boards, LED reflective and heat dissipation components, housings and internal components for information equipment, communication equipment, and home appliances, battery cases, battery module spacers, separator supports, wire and cable coverings, building and civil engineering components (sashes, siding, flooring, wall materials, pipes, ducts, tiles, waterproof sheets, etc.), packaging materials (food packaging films, industrial packaging films, shrink films, stretch films, bottles, trays, etc.), optical components (lenses, lens holders, light guides, reflectors, diffusers, etc.), office supplies, household goods, and daily necessities, medical and sanitary materials, agricultural films and sheets, and the like.

[0074] The resin composition according to this embodiment can be used in a variety of applications as a deodorizing resin. For example, the resin composition according to this embodiment or molded articles, films, sheets, tubes, bottles, containers, foams, coatings, coating layers, etc. obtained therefrom can be suitably used as deodorizing components for spaces such as living rooms, offices, car interiors, hotel rooms, refrigerators, shoe cabinets, closets, lockers, toilets, washrooms, and bathrooms; deodorizing filters or filter frames used in air purifiers, air conditioners, ventilation fans, range hoods, air conditioning ducts, etc.; automotive interior components; furniture components; building interior materials; flooring materials; wall materials; ceiling materials; wiring ducts, etc.

[0075] The resin composition according to this embodiment can be suitably used in applications that reduce unpleasant odors such as urine odor, fecal odor, garbage odor, and food odor by being used in sanitary materials such as disposable diapers, sanitary napkins, incontinence pads, and pet sheets, as well as pet toilet trays or cage trays, garbage bags, food waste bags, garbage can liners, food trays and food packaging films, and various films and sheets around the kitchen.

[0076] <Dispersion> One embodiment of the present invention relates to a dispersion comprising the above-mentioned deodorant and a dispersion medium.

[0077] The type of dispersion medium should be selected appropriately depending on the intended use of the dispersion.

[0078] The dispersion medium may be a single type or a combination of two or more types.

[0079] Examples of dispersion media include water, organic solvents, and mixtures thereof.

[0080] The amount of inorganic particles contained in the deodorant can be appropriately selected depending on the intended use of the dispersion. For example, the amount of inorganic particles may be 0.1 to 100 parts by mass, or 1 to 80 parts by mass, per 100 parts by mass of the dispersion.

[0081] The dispersion may further contain optional additives depending on the application. Examples of additives include resins, antioxidants, UV absorbers, flame retardants, softeners, antibacterial agents, antistatic agents, colorants, and plasticizers.

[0082] The uses of the dispersion according to this embodiment are not particularly limited, but examples include: coating liquids, primers, sizing agents, surface treatment agents, antifouling agents, water-repellent and oil-repellent agents, antistatic agents, flame retardant agents, heat-shielding and heat-insulating coating liquids, infrared-reflective coating liquids, light-diffusing coating liquids, conductive or insulating coating liquids; raw materials or intermediates for paints, inks, adhesives, sealants, coating agents, resin compositions, rubber compositions, ceramic slurries, green sheet slurries, battery electrode slurries, catalyst layer forming coating liquids, chromatography filler coating liquids, polishing slurries, CMP slurries, inkjet inks, 3D printer inks, etc.; antibacterial agents, deodorizers, antifungal agents, antifogging agents, rust inhibitors, water treatment agents, various functional spray formulations, sanitary material treatment liquids, filter treatment liquids.

[0083] <Deodorizing Fiber> One embodiment of the present invention relates to a deodorizing fiber comprising the above-mentioned deodorizing agent and a fiber.

[0084] In deodorizing fibers, the deodorant may be kneaded into the fibers or attached to the surface of the fibers.

[0085] One example of a method for producing deodorizing fibers according to this embodiment is a method of spinning a resin composition into which a deodorizing agent has been kneaded. Examples of resin compositions used in the above method include those listed in the <Resin Composition> section.

[0086] Another method for producing the deodorizing fibers according to this embodiment is, for example, a method of attaching a resin composition or dispersion containing a deodorant to the fibers. Examples of resin compositions used in the above method include those listed in the <Resin Composition> section. Examples of dispersions used in the above method include those listed in the <Dispersion> section. Examples of fibers used in the above method include synthetic fibers, regenerated fibers, plant fibers, and animal fibers.

[0087] Examples of synthetic fibers include those spun from the resins described in the section on <Resin Compositions> above. Examples of regenerated fibers include rayon and cupro. Examples of plant fibers include cotton and hemp. Examples of animal fibers include wool, silk, and cashmere.

[0088] The amount of inorganic particles contained in the deodorizing fibers is preferably 0.1 to 10 parts by mass, and more preferably 0.5 to 5.0 parts by mass, per 100 parts by mass of resin, from the viewpoint of fiber strength and deodorizing performance.

[0089] Deodorizing fibers can be used in a variety of products. Specific examples include underwear, stockings, socks, bedding, duvet covers, cushions, blankets, carpets, curtains, sofas, car seats, air filters, and clothing for elderly care.

[0090] The present invention will be described in more detail below using examples and comparative examples, but the technical scope of the present invention is not limited thereto. In the examples and comparative examples, "room temperature" means 25°C.

[0091] The various values ​​in the examples may be preferred lower or upper limits in the embodiments of the present invention. Alternatively, two similar values ​​in the examples may be combined as appropriate to form a preferred numerical range.

[0092] <Preparation of Deodorizer> [Example 1] Pure water (30 parts by mass) and decyltrimethoxysilane (3 parts by mass) were added to a beaker and stirred at room temperature for 30 minutes to prepare dispersion A. α-type zirconium phosphate (d50: 0.8 μm) (100 parts by mass) was added to a mortar and mixed at room temperature while dropping dispersion A onto it. After adding the entire amount of dispersion A, the mixture was mixed for another 30 minutes. Then, it was left to stand at 80°C for 1 hour and then vacuum dried at 120°C for 4 hours. After drying, the powder was collected and crushed in a mortar to obtain the deodorizer.

[0093] [Example 2] A deodorant was prepared in the same manner as in Example 1, except that α-type zirconium phosphate (d50: 0.4 μm) was used instead of α-type zirconium phosphate (d50: 0.8 μm).

[0094] [Example 3] A deodorant was prepared in the same manner as in Example 1, except that α-type zirconium phosphate (d50: 1.4 μm) was used instead of α-type zirconium phosphate (d50: 0.8 μm).

[0095] [Example 4] A deodorant was prepared in the same manner as in Example 1, except that α-type titanium phosphate (d50: 1.2 μm) was used instead of α-type zirconium phosphate (d50: 0.8 μm).

[0096] [Example 5] A deodorant was prepared in the same manner as in Example 1, except that aluminum silicate (d50: 11.0 μm) was used instead of α-type zirconium phosphate (d50: 0.8 μm).

[0097] [Example 6] A deodorant was prepared in the same manner as in Example 1, except that octyltrimethoxysilane was used instead of decyltrimethoxysilane.

[0098] [Example 7] A deodorant was prepared in the same manner as in Example 1, except that octadecyltrimethoxysilane was used instead of decylmethoxysilane.

[0099] [Example 8] A deodorant was prepared in the same manner as in Example 1, except that hexadecyltrimethoxysilane was used instead of decylmethoxysilane.

[0100] [Example 9] A deodorant was prepared in the same manner as in Example 1, except that dodecyltrimethoxysilane was used instead of decylmethoxysilane.

[0101] [Example 10] A deodorant was prepared in the same manner as in Example 1, except that hexyltrimethoxysilane was used instead of decylmethoxysilane.

[0102] [Example 11] A deodorant was prepared in the same manner as in Example 1, except that n-propyltrimethoxysilane was used instead of decylmethoxysilane.

[0103] [Example 12] A deodorant was prepared in the same manner as in Example 1, except that phenyltrimethoxysilane was used instead of decylmethoxysilane.

[0104] [Example 13] A deodorant was prepared in the same manner as in Example 1, except that methyltrimethoxysilane was used instead of decylmethoxysilane.

[0105] [Example 14] A deodorant was prepared in the same manner as in Example 1, except that dimethyldimethoxysilane was used instead of decylmethoxysilane.

[0106] [Example 15] A deodorant was prepared in the same manner as in Example 1, except that diphenyldiethoxysilane was used instead of decylmethoxysilane.

[0107] [Example 16] A deodorant was prepared in the same manner as in Example 7, except that α-type zirconium phosphate (d50: 0.4 μm) was used instead of α-type zirconium phosphate (d50: 0.8 μm).

[0108] [Example 17] A deodorant was prepared in the same manner as in Example 9, except that α-type zirconium phosphate (d50: 0.4 μm) was used instead of α-type zirconium phosphate (d50: 0.8 μm).

[0109] [Example 18] A deodorant was prepared in the same manner as in Example 12, except that α-type zirconium phosphate (d50: 0.4 μm) was used instead of α-type zirconium phosphate (d50: 0.8 μm).

[0110] [Example 19] A deodorant was prepared in the same manner as in Example 8, except that α-type zirconium phosphate (d50: 1.4 μm) was used instead of α-type zirconium phosphate (d50: 0.8 μm).

[0111] [Example 20] A deodorant was prepared in the same manner as in Example 10, except that α-type zirconium phosphate (d50: 1.4 μm) was used instead of α-type zirconium phosphate (d50: 0.8 μm).

[0112] [Example 21] A deodorant was prepared in the same manner as in Example 14, except that α-type zirconium phosphate (d50: 1.4 μm) was used instead of α-type zirconium phosphate (d50: 0.8 μm).

[0113] [Example 22] A deodorant was prepared in the same manner as in Example 7, except that α-type titanium phosphate (d50: 1.2 μm) was used instead of α-type zirconium phosphate (d50: 0.8 μm).

[0114] [Example 23] A deodorant was prepared in the same manner as in Example 13, except that α-type titanium phosphate (d50: 1.2 μm) was used instead of α-type zirconium phosphate (d50: 0.8 μm).

[0115] [Example 24] A deodorant was prepared in the same manner as in Example 7, except that aluminum silicate (d50: 11.0 μm) was used instead of α-type zirconium phosphate (d50: 0.8 μm).

[0116] [Example 25] A deodorant was prepared in the same manner as in Example 13, except that aluminum silicate (d50: 11.0 μm) was used instead of α-type zirconium phosphate (d50: 0.8 μm). [Example 26] 1000 parts by mass of pure water and 3 parts by mass of benzalkonium chloride were added to a beaker and stirred at room temperature for 30 minutes to prepare dispersion B. 100 parts by mass of α-type zirconium phosphate (d50: 0.8 μm) was added to dispersion B and stirred at room temperature for 24 hours. Solid-liquid separation was performed by suction filtration, and after washing three times with pure water, the solid was recovered. Then, it was vacuum-dried at 120°C for 4 hours. After drying, the powder was recovered and crushed in a mortar to obtain the deodorant.

[0117] [Example 27] Ethanol (50 parts by mass) and stearic acid (3 parts by mass) were added to a beaker and stirred at room temperature for 30 minutes to prepare dispersion C. α-type zirconium phosphate (d50: 0.8 μm) (100 parts by mass) was added to a mortar and mixed at room temperature while dropping dispersion C was added. After adding the entire amount of dispersion C, the mixture was mixed for another 30 minutes until the ethanol evaporated. Then, it was vacuum dried at 120°C for 4 hours. After drying, the powder was collected and crushed in a mortar to obtain a deodorant.

[0118] [Comparative Example 1] A deodorant was prepared in the same manner as in Example 1, except that decyltrimethoxysilane was not used.

[0119] [Comparative Example 2] A deodorant was prepared in the same manner as in Example 4, except that decyltrimethoxysilane was not used.

[0120] [Comparative Example 3] A deodorant was prepared in the same manner as in Example 5, except that decyltrimethoxysilane was not used.

[0121] <Performance Evaluation Test> In the performance evaluation test, the deodorants obtained in the above examples and comparative examples (hereinafter referred to as "untreated deodorant"), the deodorant that underwent alkali treatment 1 described below (hereinafter referred to as "treated deodorant 1"), the deodorant that underwent solvent treatment described below and then alkali treatment 1 (hereinafter referred to as "treated deodorant 2"), and the deodorant that underwent alkali treatment 2 described below (hereinafter referred to as "treated deodorant 3") were used.

[0122] [Alkali Treatment 1] A sodium hydroxide aqueous solution with pH 13 (200 parts by mass) was added to a beaker, and a deodorant (0.2 parts by mass) was added. The mixture was stirred at room temperature for 1 hour. Solid-liquid separation was performed by suction filtration, and after washing several times with pure water, the solid was recovered. The mixture was then vacuum-dried at 120°C for 4 hours. After drying, the powder was recovered and crushed in a mortar to obtain alkali-treated deodorant 1.

[0123] [Alkali Treatment 2] A sodium hydroxide aqueous solution with pH 13 (200 parts by mass) was added to a beaker, and a deodorant (0.2 parts by mass) was added and stirred at 95°C for 1 hour. Solid-liquid separation was performed by suction filtration, and after washing several times with pure water, the solid was recovered. Then, it was vacuum dried at 120°C for 4 hours. After drying, the powder was recovered and crushed in a mortar to obtain alkali-treated deodorant 3.

[0124] [Solvent Treatment] Dimethylacetamide (200 parts by mass) was added to a beaker, and deodorant (0.5 parts by mass) was added and stirred at room temperature for 1 hour. Solid-liquid separation was performed by suction filtration, and after washing several times with pure water, the solid was recovered. Then, it was vacuum dried at 120°C for 4 hours. After drying, the powder was recovered and crushed in a mortar to obtain the solvent-treated deodorant.

[0125] Solid-state H-NMR measurements were performed using JNM-ECA400 (manufactured by JEOL) on α-type zirconium phosphate (d50: 0.8 μm), the deodorant obtained in Example 6, and the deodorant from Example 6 after solvent treatment. The results are shown in Figure 1. As shown in Figure 1, a peak appeared around 1-2 ppm when α-type zirconium phosphate was reacted with a silane compound, and this peak did not disappear even after solvent treatment. This indicates that silanes with alkyl groups remain after solvent treatment.

[0126] [Ammonia Gas Adsorption Test] Untreated deodorant, treated deodorant 1, treated deodorant 2, and treated deodorant 3 (10 mg) were placed in a polyvinylidene chloride (PVDC) coated film bag and sealed. Air was added to the bag to a volume of 3 L, and then ammonia gas was added to the bag to achieve an ammonia gas concentration of 1000 ppm. After 2 hours, the residual ammonia gas concentration in the bag was measured, and the amount of gas adsorbed was calculated using the following formula. The results are shown in Table 1. Amount of gas adsorbed (mL / g) = 3(1000 - X) / 10 [X is the residual ammonia gas concentration (ppm)]

[0127]

[0128] As can be seen from Table 1, resistance to alkaline treatment can be imparted to inorganic particles by hydrophobizing them. In particular, hydrophobization with silane compounds can impart even stronger resistance to alkaline treatment, as well as strong resistance to solvent treatment. Furthermore, by using zirconium phosphate as the inorganic particle, a high gas adsorption capacity can be achieved.

Claims

1. A deodorant containing inorganic particles having a hydrophobic surface.

2. The deodorant according to claim 1, wherein the inorganic particles include at least one selected from the group consisting of phosphates and silicates.

3. The deodorant according to claim 1, wherein the inorganic particles include at least one selected from the group consisting of zirconium phosphate, titanium phosphate, and aluminum silicate.

4. The deodorant according to claim 1, wherein the inorganic particles contain α-type zirconium phosphate.

5. The deodorant according to claim 1, wherein the volume-based median diameter of the inorganic particles is 0.1 μm to 30 μm.

6. The deodorant according to claim 1, wherein the hydrophobicization is performed by an organic compound.

7. The deodorant according to claim 6, wherein the organic compound comprises at least one selected from the group consisting of silane compounds, surfactants, and fatty acids.

8. The deodorant according to claim 6, wherein the organic compound comprises a silane compound.

9. The deodorant according to claim 8, wherein the silane compound is an alkoxysilane.

10. The deodorant according to claim 1 for adsorbing basic gases.

11. The deodorant according to claim 10, wherein the basic gas includes ammonia gas.

12. A resin composition comprising a deodorant according to any one of claims 1 to 11, and a resin.

13. A dispersion comprising the deodorant according to any one of claims 1 to 11 and a dispersion medium.

14. A deodorizing fiber comprising the deodorizing agent according to any one of claims 1 to 11, and a fiber.

15. Inorganic particles having a hydrophobic surface.

16. The inorganic particles according to claim 15, wherein the inorganic particles include at least one selected from the group consisting of phosphates and silicates.

17. The inorganic particles according to claim 15, wherein the inorganic particles include at least one selected from the group consisting of zirconium phosphate, titanium phosphate, and aluminum silicate.

18. The inorganic particles according to claim 15, wherein the inorganic particles contain α-type zirconium phosphate.

19. The inorganic particle according to claim 15, wherein the volume-based median diameter of the inorganic particle is 0.1 μm to 30 μm.

20. The inorganic particle according to claim 15, wherein the hydrophobicization is performed by an organic compound.

21. The inorganic particles according to claim 20, wherein the organic compound comprises at least one selected from the group consisting of silane compounds, surfactants, and fatty acids.

22. The inorganic particles according to claim 20, wherein the organic compound comprises a silane compound.

23. The inorganic particles according to claim 22, wherein the silane compound is an alkoxysilane.

24. A resin composition comprising inorganic particles according to any one of claims 15 to 23, and a resin.

25. A dispersion comprising inorganic particles according to any one of claims 15 to 23 and a dispersion medium.

26. A deodorizing fiber comprising inorganic particles according to any one of claims 15 to 23, and fibers.

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