TW202132221A - Compound oxide particle, deodorizer, cleaning composition, detergent composition, textile, and resin molded article - Google Patents

Abstract

A compound oxide particle includes a compound oxide represented by the following Formula (1), shows a diffraction peak in the vicinity of a diffraction angle of 43.2DEG in a powder X-ray diffraction diagram using CuK[alpha] rays, and has a crystallite size, obtained using the Scherrer equation from the line width of the diffraction peak, of 4.0 nm or less. Formula (1): M<SP>2+</SP>xM<SP>3+</SP>yOz In Formula (1), M<SP>2+</SP> represents a divalent metal ion, M<SP>3+</SP> represents a trivalent metal ion, each of x, y and z independently represents a positive number, 2x + 3y = 2z, and the metallic element configuring M<SP>2+</SP> and the metallic element configuring M<SP>3+</SP> may be the same kind of metallic element or may be different kinds of metallic element.

Description

Composite oxide particles, deodorant, detergent composition, detergent composition, fiber products, and resin molded products

The present invention relates to a composite oxide particle, a deodorant, a detergent composition, a detergent composition, a fiber product, and a resin molded product.

Conventionally, hydrotalcite or its calcined product has been used as an anion adsorbent, deodorant, or gas trapping agent. For example, Patent Document 1 discloses a halogen scavenger containing a magnesium oxide-based solid solution that is a calcined product of hydrotalcite. For example, Patent Document 2 discloses: a hydrotalcite-coated powder obtained by coating the surface of a powdered core with hydrotalcite; and a deodorant containing the hydrotalcite-coated powder. For example, Patent Document 3 discloses a deodorant composed of an inorganic cation exchanger and an inorganic anion exchanger, and the inorganic anion exchanger is a calcined product of a hydrotalcite compound. For example, Patent Document 4 discloses a deodorant sheet in which a calcined product of hydrotalcite is supported on a material with low dusting properties. For example, Patent Document 5 discloses: an inorganic sulfate ion scavenger in which the amount of ionic impurities eluted in pure water is 500 ppm or less and the amount of sulfate ions eluted in pure water is 30 ppm or less; And, a calcined product of a hydrotalcite compound as the inorganic sulfate ion scavenger. For example, Patent Document 6 discloses: a hydrotalcite-like granular body, which is made by drying a material containing at least a hydrotalcite-like substance and water below the dehydration temperature of the aforementioned hydrotalcite-like substance; and, a liquid A processing device equipped with the hydrotalcite-like granular body. For example, Patent Document 7 discloses: a hydrotalcite compound, in the powder X-ray diffraction pattern, the peak intensity at 2θ=11.4°～11.7° is 3500 cps or more, and the BET specific surface area exceeds 30 m ² /g; and , An inorganic ion scavenger containing the hydrotalcite compound and an inorganic cation exchanger. [Prior Art Document] (Patent Document)

Patent Document 1: Japanese Patent Publication No. 2-39304 Patent Document 2: Japanese Patent Laid-Open No. 3-153767 Patent Document 3: Japanese Patent Application Laid-Open No. 8-325830 Patent Document 4: Japanese Patent Laid-Open No. 2000-342668 Patent Document 5: International Publication No. 2007/077779 Patent Document 6: International Publication No. 2008/059618 Patent Document 7: International Publication No. 2008/136272

[The problem to be solved by the invention] In order to seek a more comfortable living environment, a deodorant is being sought, which can show deodorizing performance in a shorter time when it is used in a smaller amount. In addition, a purifier is being sought, which not only removes odor, but also removes pollutants in the air and tap water.

The implementation form of this case is developed based on the above-mentioned situation. The purpose of the embodiment of this case is to provide a composite oxide particle and a deodorant, a detergent composition, a detergent composition, a fiber product, and a resin molded product containing the composite oxide particle. The removal performance of odorous substances or pollutants contained in gases, liquids, or solids is excellent, and the problem to be solved by the embodiment of this case is to achieve this objective. [Technical means to solve the problem]

The technical means to solve the aforementioned problems to be solved include the following aspects.

式(1)中，M^{2 ＋} 為2價金屬離子，M^{3 ＋} 為3價金屬離子，x、y及z分別獨立地為正數，且2x＋3y＝2z，用以構成M^{2 ＋} 的金屬元素與用以構成M^{3 ＋} 的金屬元素可為相同種類的金屬元素，亦可為不同種類的金屬元素。 ＜2＞如＜1＞所述的複合氧化物粒子，其中，在溫度95℃的水50 mL中，對前述複合氧化物粒子0.5 g進行20小時溶析後，溶析液在25℃時的導電率為200 μS/cm以上且1000 μS/cm以下，且溶析液在25℃時的pH值為9.5以上且12.5以下。 ＜3＞如＜1＞或＜2＞所述的複合氧化物粒子，其BET比表面積為150 m² /g以上且300 m² /g以下。 ＜4＞如＜1＞至＜3＞中任一項所述的複合氧化物粒子，其中，前述式(1)中，M^{2 ＋} 為Mg^{2 ＋} 且M^{3 ＋} 為Al^{3 ＋} 。 ＜5＞一種除臭劑，其包含＜1＞至＜4＞中任一項所述的複合氧化物粒子。 ＜6＞一種洗滌用組成物，其包含＜1＞至＜4＞中任一項所述的複合氧化物粒子。 ＜7＞一種洗淨劑組成物，其包含＜1＞至＜4＞中任一項所述的複合氧化物粒子。 ＜8＞一種纖維品，其纖維表面及纖維間之中的至少任一方包含＜1＞至＜4＞中任一項所述的複合氧化物粒子。 ＜9＞一種樹脂成形品，其包含＜1＞至＜4＞中任一項所述的複合氧化物粒子。 [功效]<1> A composite oxide particle comprising a composite oxide represented by the following formula (1), and in a powder X-ray diffraction pattern using CuKα rays, a diffraction peak is shown near a diffraction angle of 43.2° , And the crystal size calculated from the line width of the diffraction peak by Scherrer's formula is 4.0 nm or less;

In formula (1), M ^{2 +} is a divalent metal ion, M ^{3 +} is a trivalent metal ion, x, y, and z are independently positive numbers, and 2x+3y=2z, which is used to form the metal element of ^{M 2 + and} The metal elements used to form M ^{3 +} can be the same kind of metal elements or different kinds of metal elements. <2> The composite oxide particles according to <1>, wherein 0.5 g of the composite oxide particles are eluted for 20 hours in 50 mL of water at a temperature of 95°C. The electrical conductivity is 200 μS/cm or more and 1000 μS/cm or less, and the pH of the eluent at 25° C. is 9.5 or more and 12.5 or less. <3> The composite oxide particles described in <1> or <2> have a BET specific surface area of 150 m ² /g or more and 300 m ² /g or less. <4> The composite oxide particle according to any one of <1> to <3>, wherein, in the above formula (1), M ^{2 +} is Mg ^{2 +} and M ^{3 +} is Al ^{3 +} . <5> A deodorant comprising the composite oxide particles described in any one of <1> to <4>. <6> A cleaning composition comprising the composite oxide particles described in any one of <1> to <4>. <7> A detergent composition containing the composite oxide particles described in any one of <1> to <4>. <8> A fiber product in which at least any one of the fiber surface and between the fibers contains the composite oxide particles described in any one of <1> to <4>. <9> A resin molded product containing the composite oxide particles described in any one of <1> to <4>. [effect]

According to the present case, it is possible to provide a composite oxide particle and a deodorant, a cleaning composition, a detergent composition, a fiber product, and a resin molded product containing the composite oxide particle. The removal performance of odorous substances or pollutants contained in liquids or solids is excellent.

The following describes the embodiment of this case. These descriptions and examples are used to exemplify the embodiment, and are not used to limit the scope of the embodiment. In this case, the numerical range represented by "～" means a range that includes the numerical values described before and after "～" as the minimum and maximum values, respectively. In the numerical range described in stages in this case, the upper limit or lower limit described in one numerical range can be replaced with the upper limit or lower limit of other numerical ranges described in stages. In addition, in the numerical range described in this application, the upper limit or the lower limit of the numerical range can be replaced with the values disclosed in the examples. In this case, "% by mass" and "% by weight" are synonymous, and "parts by mass" and "parts by weight" are synonymous. In this case, when there are multiple substances equivalent to each component in the composition, when referring to the amount of each component in the composition, unless otherwise specified, it means that the multiple substances are present in the composition The total amount. In this case, the particles corresponding to each component may include a plurality of kinds. When there are plural kinds of particles corresponding to each component in the composition, the particle size of each component means the value with respect to the mixture of the plural kinds of particles present in the composition, unless otherwise specified. In this case, the term "step" is not only an independent step, but even if it cannot be clearly distinguished from other steps, as long as the intended purpose of the step can be achieved, it is still included in this term.

＜Composite oxide particles＞ The composite oxide particles in this case include the composite oxide represented by the following formula (1), and in the powder X-ray diffraction pattern using CuKα rays, a diffraction peak is shown in the vicinity of a diffraction angle of 43.2°. The crystal size obtained from the line width of the diffraction peak according to Schiller's formula is 44.0 nm or less.

式(1)中，M^{2 ＋} 為2價金屬離子，M^{3 ＋} 為3價金屬離子，x、y及z分別獨立地為正數，且2x＋3y＝2z，用以構成M^{2 ＋} 的金屬元素與用以構成M^{3 ＋} 的金屬元素可為相同種類的金屬元素，亦可為不同種類的金屬元素。

In formula (1), M ^{2 +} is a divalent metal ion, M ^{3 +} is a trivalent metal ion, x, y, and z are independently positive numbers, and 2x+3y=2z, which is used to form the metal element of ^{M 2 + and} The metal elements used to form M ^{3 +} can be the same kind of metal elements or different kinds of metal elements.

The composite oxide particles include the composite oxide represented by formula (1), and in the powder X-ray diffraction pattern using CuKα rays, a diffraction peak is shown near a diffraction angle of 43.2°. This point is used to make It is estimated that the crystal structure of the composite oxide particles is the same as that of _{MgO or Al 2} O _3. Although the detailed mechanism is not necessarily clear, we speculate that the composite oxide particles in this case have a large number of sites for adsorbing substances due to the above-mentioned crystal structure and a crystal size of 4.0 nm or less. The removal performance of odorous substances or pollutants contained in the neutral or solid is excellent. Hereinafter, the characteristics of the composite oxide particles of this case will be described in detail.

The particle shape of the composite oxide particles in this case is not limited, and may be any of spherical, elliptical, plate-shaped, needle-shaped, and amorphous, for example.

The composite oxide particles in this case include the composite oxide represented by formula (1). The fact that the composite oxide particles include the composite oxide represented by formula (1) can be confirmed by fluorescent X-ray analysis and X-ray diffraction analysis.

In the formula (1), examples of ^{M 2 + include Mg 2 +} , Ca ^{2 +} , Zn ^{2 +} , Ni ^{2 +} , and Mn ^{2 +} . As M ^{2 +} , at least one selected from the group consisting of Mg ^{2 +} , Zn ^{2 +} and Ni ^{2 + is preferably selected from the group consisting of Mg 2 +} and Zn ^{2 +} At least one is preferable, and Mg ^{2 + is more} preferable. In the formula (1), examples of ^{M 3 + include Al 3 +} , Fe ^{3 +} , Cr ^{3 +} , and Co ^{3 +} . As M ^{3 +} , at least one selected from the group consisting of Al ^{3 +} and Fe ^{3 + is preferred, and Al 3 + is} preferred.

In formula (1), x:y is preferably from 3:2 to 10:2, preferably from 3.6:2 to 9:2, and more preferably from 4:2 to 8:2.

Examples of the composite oxide represented by formula (1) include the following.

As the composite oxide represented by the formula (1), Mg ^{2 +} _x Al ^{3 +} _y O _{z is} preferred, that is, a magnesium-aluminum composite oxide is preferred. Among them, Mg ^{2 +} ₇ Al ^{3 +} ₃ O _11.5 is a preferred form.

The composite oxide particles in this case show a diffraction peak near a diffraction angle of 43.2° in a powder X-ray diffraction pattern using CuKα rays. The so-called 43.2° neighborhood means the range of 43.2°±0.5° (that is, 42.7° to 43.7°).

The crystal size of the composite oxide particles in this case is 4.0 nm or less. The crystal size is determined by powder X-ray diffraction using CuKα rays. The crystal size is calculated from the line width of the diffraction peak near the diffraction angle of 43.2° in the powder X-ray diffraction pattern of the powder X-ray diffraction pattern using CuKα rays using the following Scherrer's formula.

Xie Le’s formula: C=Kλ/Bcosθ C: Crystal size (nm) K: Sheryl constant (0.9) λ: X-ray wavelength (CuKα=1.5418 Å=0.15418 nm) B: The line width (radians) of the diffraction peak near the diffraction angle of 43.2°. The line width is the width of two points where the tangent to the inflection point on the left and right of the peak intersects the baseline. θ: Bragg angle (half the angle of diffraction 2θ, 2θ is the value of each specimen and is a value around 43.2°)

From the viewpoint of more excellent removal performance of odorous substances and the like, the crystal size of the composite oxide particles in this case is preferably 3.9 nm or less, and more preferably 3.8 nm or less. From the viewpoint of the stability of the crystal structure, the crystal size of the composite oxide particles in this case is preferably 3.0 nm or more, and more preferably 3.3 nm or more.

The composite oxide particles of the present application preferably contain ionic components in addition to the components constituting the composite oxide particles represented by formula (1). Although the detailed mechanism is not necessarily clear, we speculate that the composite oxide particles containing the ionic component will react with the ionic component and the odor or pollutant, so that it will be more effective against the odor. Removal performance of odorous substances or pollutants. The type of the ionic component is not particularly limited, and examples thereof include OH ⁻ , Na ⁺ , Mg ^{2 +} , Al ^{3 +} and the like. The type of the above-mentioned ionic component can specify the type of the substance easily adsorbed by the composite oxide particles of the present invention. The type of the ionic component contained in the composite oxide particle of the present application may be one type or two or more types.

When the composite oxide particle of this case contains the above-mentioned ionic component, the above-mentioned ionic component will be eluted in water after being eluted in 50 mL of water at a temperature of 95°C for 20 hours. The conductivity and pH (hydrogen index) of this eluent can be used as indicators of the amount and properties of the ionic components contained in the composite oxide particles.

The composite oxide particles in this case are preferably: 0.5 g of composite oxide particles are eluted in 50 mL of water at a temperature of 95°C for 20 hours, and the conductivity of the eluted solution at 25°C is 200 μS/cm or more And below 1000 μS/cm. The above-mentioned electrical conductivity of 200 μS/cm or more means that relatively large amounts of ionic components capable of reacting with odorous substances and the like are contained, and the composite oxide particles are more excellent in removing odorous substances and the like. From this point of view, the above-mentioned conductivity is preferably 300 μS/cm or more, and more preferably 400 μS/cm or more. If the above-mentioned conductivity is 1000 μS/cm or less, skin irritation caused by the composite oxide particles and damage to articles (for example, textiles) that the composite oxide particles come into contact with are less likely to occur. From this point of view, the above-mentioned conductivity is preferably 600 μS/cm or less, and more preferably 500 μS/cm or less.

The composite oxide particles in this case are preferably: 0.5 g of the composite oxide particles are eluted in 50 mL of water at a temperature of 95°C for 20 hours, and the pH of the eluted solution at 25°C is alkaline. The pH being alkaline means that the ionic components contained in the composite oxide particles are alkaline in water, and it means that the composite oxide particles easily adsorb acidity in solids such as water, air, or resin. From the point of view that the composite oxide particles are more likely to adsorb acidic substances in water, air, or solids such as resins, the pH of the eluent at 25°C is preferably 9.5 or more, preferably 10.0 or more. 10.5 or more is better. From the viewpoint of suppressing skin irritation caused by the composite oxide particles and from the viewpoint of damage to the articles (such as textiles) that the composite oxide particles contact, the pH value of the eluent at 25°C is preferably 12.5 or less , Preferably 12.0 or less, more preferably 11.5 or less.

The primary particle size and secondary particle size of the composite oxide particles in this case should be selected according to the purpose of the composite oxide particles. The average primary particle diameter of the composite oxide particles in this case is preferably 25 nm to 200 nm, preferably 50 nm to 150 nm, and more preferably 75 nm to 125 nm. When the composite oxide particles in this case have formed secondary particles, the average secondary particle size is preferably 0.5 μm-100 μm, preferably 1 μm-50 μm, and more preferably 5 μm-25 μm. The average primary particle size of the composite oxide particles in this case was determined using a scanning electron microscope based on the number of particles. The average secondary particle size of the composite oxide particles in this case is determined by using a laser diffraction scattering type particle size distribution measuring device based on the volume.

From the viewpoint of more excellent removal ability of odorous substances, the composite oxide particles of the present application preferably have a BET specific surface area of 150 m ² /g or more, more preferably a BET specific surface area of 180 m ² /g or more, and further More preferably, the BET specific surface area is 200 m ² /g or more. From the viewpoint of suppressing aggregation of the composite oxide particles with each other and the viewpoint of suppressing moisture absorption, the BET specific surface area of the composite oxide particles of the present application is ^{preferably 300 m 2} /g or less. The BET specific surface area of the composite oxide particles in this case is determined by measuring the adsorption amount of nitrogen gas in accordance with JIS Z8830:2013 "Method for Measuring the Specific Surface Area of Powder (Solid) by Gas Adsorption". When the composite oxide particles in this case have formed secondary particles, the above measurement is performed directly as a sample in the state where the secondary particles have been formed.

＜Method for producing composite oxide particles＞ The method for producing the composite oxide particles in this case is not particularly limited. As one aspect of the method of producing the composite oxide particles of the present application, for example, a production method of synthesizing hydrotalcite and calcining the hydrotalcite is mentioned. As the composition of the hydrotalcite, the following formula (2) is preferred.

式(2)中，M^{2 ＋} 為2價金屬離子，M^{3 ＋} 為3價金屬離子，A^{m －} 為m價陰離子，m為1、2或3，a、b、c及d分別獨立地為正數，且2a＋3b－c－md＝0，n為0或正數，用以構成M^{2 ＋} 的金屬元素與用以構成M^{3 ＋} 的金屬元素可為相同種類的金屬元素，亦可為不同種類的金屬元素。

In formula (2), M ^{2 +} is a divalent metal ion, M ^{3 +} is a trivalent metal ion, A ^{m -} is an m-valent anion, m is 1, 2 or 3, a, b, c, and d are independently It is a positive number, and 2a+3b-c-md=0, n is 0 or a positive number. ^{The metal element used to form M 2 + and} the metal element used to form M ^{3 +} can be the same kind of metal element or different kinds Metal elements.

In the formula (2), examples of ^{M 2 + include Mg 2 +} , Ca ^{2 +} , Zn ^{2 +} , Ni ^{2 +} , and Mn ^{2 +} . As M ^{2 +} , at least one selected from the group consisting of Mg ^{2 +} , Zn ^{2 +} and Ni ^{2 + is preferably selected from the group consisting of Mg 2 +} and Zn ^{2 +} At least one is preferable, and Mg ^{2 + is more} preferable. In the formula (2), examples of ^{M 3 + include Al 3 +} , Fe ^{3 +} , Cr ^{3 +} , and Co ^{3 +} . As M ^{3 +} , at least one selected from the group consisting of Al ^{3 +} and Fe ^{3 + is preferred, and Al 3 + is} preferred. Formula (2), examples of A ^{m -} may be for example such as: a carbonate ion (CO ₃ ^{2 -),} nitrate ion (NO ₃ ^-), sulfate ion (SO ₄ ^{2 -),} halide ions (Cl ^-, etc.), phosphoric acid Ion (PO ₄ ^{3 －} ). As A ^{m -} to carbonate ions (CO ₃ ^{2 -)} or nitrate ions (NO ₃ ^-) is preferable, and a carbonate ion (CO ₃ ^{2 -)} preferred.

In formula (2), a:b is preferably from 3:2 to 10:2, preferably from 3.6:2 to 9:2, and more preferably from 4:2 to 8:2. In formula (2), c is preferably 10-24, preferably 11.2-22, and more preferably 12-20.

Examples of the hydrotalcite conforming to formula (2) include the following.

As the hydrotalcite represented by formula (2), Mg _a Al _b (OH) _c CO ₃ ·nH ₂ O is preferred, that is, magnesia-aluminum hydrotalcite is preferred. Among them, Mg _4.5 Al ₂ (OH) ₁₃ CO ₃ ·3.5H ₂ O is a preferred form.

As a production method of synthesizing the hydrotalcite represented by the formula (2) and calcining the hydrotalcite, more specifically, the following production methods can be cited.

A method for manufacturing composite oxide particles, which includes: Step (1), mixing the metal salt aqueous solution with the alkaline aqueous solution and co-precipitating divalent metal ions and trivalent metal ions to obtain a slurry; Step (2), which obtains hydrotalcite particles from the aforementioned slurry; and, In step (3), the aforementioned hydrotalcite is calcined to obtain composite oxide particles. The above-mentioned manufacturing method may include between step (1) and step (2): step (A), which heats the slurry to grow the structure of the hydrotalcite.

Step (1) is achieved, for example, in the following manner: the metal salt aqueous solution and the alkaline aqueous solution are dropped into the water. The divalent metal ions and trivalent metal ions contained in the metal salt aqueous solution co-precipitate due to the increase in pH.

The metal salt aqueous solution is prepared, for example, by dissolving a metal salt that will become a source of divalent metal ions and a metal salt that will become a source of trivalent metal ions in water. There are no particular restrictions on the types of these metal salts as long as they are soluble in water, and they are selected in accordance with the types of M ^{2 +} , M ^{3 +,} and A ^{m -} used to form the formula (2). When the divalent metal ion is Mg ^{2 +} , examples of the metal salt that will become a source of the divalent metal ion include magnesium chloride, magnesium sulfate, magnesium nitrate, magnesium hydroxide, and magnesium acetate. When the trivalent metal ion is Al ^{3 +} , examples of the metal salt that can become a source of trivalent metal ion include aluminum nitrate, aluminum chloride, aluminum sulfate, aluminum hydroxide, and the like. By the balance between the divalent metal ion concentration and the trivalent metal ion concentration of the metal salt aqueous solution, a and b of the formula (2) can be controlled.

As the alkaline aqueous solution, an aqueous solution of alkali metal hydroxide is preferred, and an aqueous solution of sodium hydroxide or potassium hydroxide is preferred. In the alkaline aqueous solution, the type of A ^{m −} (m-valent anion) of the formula (2) can be blended to dissolve the alkali metal compound that will be its ion source. Examples of the alkali metal compound include sodium carbonate, potassium carbonate, sodium nitrate, potassium nitrate, sodium sulfate, potassium sulfate, sodium halide, potassium halide, sodium phosphate, potassium phosphate, and the like.

When the metal salt aqueous solution and the alkaline aqueous solution are dropped into the water, from the viewpoint of setting the composition of the precipitate to be constant, it is preferable that the two liquids start to be dropped at the same time, and the dropping speed of each liquid is set to After a certain amount of time, the dripping of the two liquids ends at the same time. The pH value of the reaction system in which the metal salt aqueous solution and the alkaline aqueous solution are dropped into water is preferably about 10-13, preferably about 10.5-12. The reaction system does not need to be heated, and the temperature of the reaction system is, for example, in the range of 20°C to 40°C.

Step (2) is achieved by, for example, filtering and separating solids from the slurry, washing the filtered solids with water, drying the washed solids, and pulverizing the dried solids into particles . Drying the water-washed solid object is achieved by, for example, placing the solid object in an environment with a temperature of 100 to 180°C.

Step (A) is achieved by, for example, the following method: while the slurry is stirred, the slurry is kept in an environment at a temperature of 60°C to 100°C for 15 minutes to 240 minutes. The above temperature is preferably 65°C to 95°C, more preferably 70°C to 90°C. The above-mentioned holding time is preferably 20 minutes to 120 minutes, and more preferably 25 minutes to 60 minutes.

Step (A) is a step of growing the structure of hydrotalcite. By not performing step (A) or setting the above-mentioned low temperature and short time even if step (A) is performed, the structure growth of hydrotalcite can be suppressed, and the crystal size of the calcined composite oxide can be relatively small.

Step (3) is achieved by, for example, holding the hydrotalcite particles in an environment with a temperature of 400° C. to 900° C. (preferably an environment with a temperature of 500° C. to 700° C.) for 1 hour to 10 hours.

We speculate that by going through step (3), the anion-derived chemical substance (such as CO ₂ ) in the hydrotalcite will be separated to form a composite oxide represented by formula (1) and increase the specific surface area of the particle .

After step (3), a step of decomposing or pulverizing the obtained calcined product may be performed to adjust the primary particle size or the secondary particle size of the composite oxide particles.

＜Use of composite oxide particles＞ The composite oxide particles in this case are suitable for deodorants, air purifiers, water purifiers, soil conditioners and Fiber treatment agent and other uses. The composite oxide particles of the present application can be used as a single composite oxide particle, can be added to various compositions for use, or can be attached to the surface of various molded articles for use.

By using the composite oxide particles of this case or a composition containing the composite oxide particles of this case to post-process the fiber, fiber product or fiber product, it can provide deodorizing fiber, deodorizing fiber product or deodorizing property Fiber products. By adding the composite oxide particles of the present invention or a composition containing the composite oxide particles of the present invention to a resin molded product, a deodorizing resin molded product can be provided. This will be detailed in the deodorant project.

Examples of odorous substances or pollutants that are the target of the composite oxide particles in this case include acid gas, halogen gas, and the like.

＜Deodorant＞ This case provides a deodorant, which contains the composite oxide particles of this case. The deodorant of this case contains at least the composite oxide particles of this case. The deodorant in this case may be a composition, which also contains other components besides the composite oxide particles in this case.

The deodorant in this case will adsorb odorous substances or pollutants. The odorous substances or pollutants that become the adsorption target of the deodorant in this case are, for example, acidic gases, and specific examples include formic acid, acetic acid, propionic acid, n-butyric acid, n-valeric acid, isovaleric acid, carbon dioxide, and hydrogen fluoride. , Hydrogen chloride, hydrogen bromide, hydrogen iodide, nitric acid, sulfur dioxide, nitrogen dioxide, hydrogen sulfide, etc. Examples of odorous substances or pollutants to be adsorbed by the deodorant in this case include halogen gases, and specific examples thereof include fluorine, chlorine, bromine, and iodine.

The shape of the deodorant in this case can be any of particles, pellets, pastes, gels, dispersions, suspensions, and the like. The dosage form of the deodorant in this case can be any of granules, granules, coating agents, sprays, aerosols, and heating evaporatives. The deodorant in this case may be a composition, which contains ingredients selected from the following as needed: water, solvents, fragrances, colorants, preservatives, moisturizers, antibacterial agents, antiviral agents, thickeners , PH adjusters, binders, dispersants, surfactants, oils, deodorants other than the composite oxide particles in this case, etc. The deodorant in this case may be a composite material supported on a substrate.

As a use form of the deodorant of this case, the form which made it adhere to the surface of various articles|goods, and made it exhibit deodorizing performance on the surface of the said article, for example is mentioned. It is a preferable form that the deodorant of this case is comprised as the coating composition of various articles.

By using the deodorant in this case to post-process the fiber, fiber product or fiber product, it is possible to provide deodorant fiber, deodorant fiber product or deodorant fiber product.

The deodorant used in the post-processing of fibers, fiber products or fiber products is preferably a liquid composition (such as a dispersion or suspension). The liquid composition may include a binder or various additives. From the viewpoint of easy dispersion of the composite oxide particles or good storage properties of the liquid composition, the concentration of the composite oxide particles of the present invention contained in the liquid composition is preferably 0.5% by mass to 50% by mass. It is preferably 1% by mass to 30% by mass. The liquid composition can be diluted with solvent or water when it is used in the post-processing of fibers, fiber products or fiber products.

The method of post-processing fibers, fiber products, or fiber products by using the deodorant of the present application is not particularly limited. When the deodorant in this case is a liquid composition (e.g., dispersion, suspension), the post-processing method includes, for example, dipping, printing, and spraying. Moreover, the post-processing is completed by the following method: after immersion treatment, printing treatment, blowing treatment, etc., the fiber, fiber product or fiber product containing the deodorant is dried. The drying method may be any of natural drying, hot air drying, vacuum drying, and the like. From the viewpoint of fixing the deodorant to the fiber, the drying method is preferably a drying method that supplies heat. For example, heat at a temperature of 40°C to 250°C (preferably, a temperature of 50°C to 180°C) is supplied, for example, for 1 minute ~5 hours (preferably 5 minutes to 3 hours) to dry the processed object.

As another form of use of the deodorant in this case, for example, a form in which it is added to the surface and/or inside of a resin molded article to exhibit deodorizing performance. In other words, by adding the deodorant in this case to the resin molded product, a deodorizing resin molded product can be provided. Examples of the resin constituting the deodorant resin molded product include polypropylene, polyethylene, ABS (acrylonitrile-butadiene-styrene), polyester, polyurethane, nylon, polystyrene, and polystyrene. Carbonate, acrylic resin, vinyl chloride resin, etc., but not limited to these resins.

As a method of adding the deodorant in this case to the surface and/or inside of the resin molded product, for example, a method of mixing the resin and the deodorizing agent and putting them in a molding machine to mold; preparing a deodorant containing a high concentration in advance After the granular resin of the agent, the granular resin and the main resin are mixed and molded. Resin molding can be applied: injection molding, extrusion molding, expansion molding, vacuum molding, compressed air molding, blow molding, foam molding and other conventional resin molding methods. The resin can be formulated according to needs: pigments, dyes, antioxidants, light stabilizers, antistatic agents, foaming agents, impact-resistant strengthening agents, glass fibers, moisture-proofing agents, extenders, fillers and other additives.

The deodorant resin molded product containing the deodorant of this case can be applied to various articles that require deodorizing performance. Examples of deodorant resin molded products include home appliances such as air purifiers and refrigerators; household products such as trash cans and drain racks; care products such as portable toilets; daily necessities; toys; sports goods.

＜Cleaning composition＞ The present application provides a cleaning composition, which includes the composite oxide particles of the present application. According to the cleaning composition of the present application, the composite oxide particles adhere to the surface of the washed article, and the composite oxide particles can exhibit the removal performance of odorous substances or pollutants on the surface of the washed article.

The cleaning composition of the present invention is preferably configured for the purpose of attaching the composite oxide particles of the present invention to the surface of the article to be cleaned. The shape of the cleaning composition in this case may be any of liquid, powder, granule, paste, gel, and the like. The dosage form of the cleaning composition in this case may be any of liquid, powder, coating, spray, and the like. The detergent composition in this case can contain ingredients selected from the following according to needs: surfactants, water, solvents, fragrances, colorants, preservatives, moisturizers, antibacterial agents, antiviral agents, thickeners, pH adjusters, bleaching agents, binders, water-soluble salts, oils, deodorants other than the composite oxide particles in this case, etc.

The objects to be washed by the washing composition of this case include, for example, thread, cloth, woven cloth, non-woven cloth, blanket, knitted fabric, paper, natural leather, synthetic leather, fur, fiber products (clothing, bedding, etc.). Furniture, bags, furniture bedding, curtains, floor mats, canvas, car interior products, etc.).

＜Detergent composition＞ The present application provides a detergent composition, which includes the composite oxide particles of the present application. The detergent composition of the present case is brought into contact with the article, and the composite oxide particles of the present case will adsorb and remove the odorous substances or pollutants possessed by the article.

As the usage form of the detergent composition of this case, for example: washing the article with water or other solvent added with the detergent composition of this case; immersing the article in the water added with the detergent composition of this case Or in other solvents; coating or spreading the detergent composition of this case on the article.

The shape of the detergent composition in this case can be any of liquid, powder, granule, paste, gel, etc. The dosage form of the detergent composition in this case may be any of liquid, powder, coating, spray, and the like. The detergent composition of this case can contain ingredients selected from the following according to needs: surfactants, water, solvents, fragrances, colorants, preservatives, moisturizers, antibacterial agents, antiviral agents, thickeners , PH adjusters, bleaching agents, clamps, water-soluble salts, oils, deodorants other than the composite oxide particles in this case, etc.

The objects to be cleaned by the detergent composition of this case include thread, cloth, woven cloth, non-woven cloth, blanket, knitted fabric, paper, natural leather, synthetic leather, fur, fiber products (clothing materials). , Bedding, bags, furniture bedding, curtains, floor mats, canvas, car interior products, etc.).

＜Fiber products＞ The present application provides a fiber product, wherein at least any one of the fiber surface and between the fibers contains the composite oxide particles of the present application. Examples of fiber products include thread, cloth, woven fabric, non-woven fabric, felt, knitted fabric, paper, and the like. Fiber products include fiber products (clothing, bedding, bags, furniture bedding, curtains, floor mats, canvas, car interior products, etc.). The material of the fiber product can be natural or artificial.

The material of the natural fiber is not particularly limited, and any one of plant fiber and animal fiber can be used. Specific examples of natural fibers include vegetable fibers such as cotton and hemp; animal fibers such as silk and wool.

The material of the artificial fiber is not particularly limited, and any chemical fiber can be used. Preferred specific examples of chemical fibers include polyurethane, polyester, nylon, rayon, acrylic resin, aramid, vinylon, polyethylene, polypropylene, and the like. Among them, at least one selected from the group consisting of polyurethane, polyester, nylon, acrylic resin, and polyethylene is preferred. The resin used to form the chemical fiber may be a homopolymer or a copolymer. In the case of a copolymer, the polymerization ratio of each copolymer component is not particularly limited.

Polyurethane is generally a polymer using polymer diol and diisocyanate as starting materials. The synthesis method of polyurethane is not particularly limited.

Polyester is at least one selected from the group consisting of polyethylene terephthalate, polyethylene naphthalate, polytrimethylene terephthalate and polybutylene terephthalate Better.

The fiber contained in the fiber product may be one type or plural types.

As the method of manufacturing the fiber product of this case, for example, the composite oxide particles of the case or the composition containing the composite oxide particles are coated or dispersed on the fiber product; the fiber product is immersed in the composite oxide containing the case In the liquid composition of particles; use water or other solvents added with the composite oxide particles of this case to clean the fiber products; use the dyeing composition of the composite oxide particles of this case to dye the fiber products; use the following resin to For melt spinning, etc., the resin is added with the composite oxide particles of the present invention or a composition containing the composite oxide particles.

＜Resin molded products＞ The present application provides a resin molded product, the surface and the inside of which at least any one of the composite oxide particles of the present application are included. Examples of resin molded products include home appliances, office equipment, medical equipment, care products, daily necessities, toys, sports goods, and the like.

The type of resin used to constitute the resin molded article is not particularly limited, and examples include polypropylene, polyethylene, ABS, polyester, polyurethane, nylon, polystyrene, polycarbonate, acrylic resin, and vinyl chloride resin. Resin molded products may contain additives such as pigments, dyes, antioxidants, light stabilizers, antistatic agents, foaming agents, impact-resistant strengthening agents, glass fibers, moisture-proofing agents, extenders, and fillers.

As a method of manufacturing the resin molded product of the present case, for example, a method of mixing the composite oxide particles of the present case with a resin and putting them in a molding machine for molding; preparing a particulate resin containing a high concentration of the composite oxide particles of the present case in advance After that, a method of mixing and molding the particulate resin with the main resin, etc. Resin molding can be applied: injection molding, extrusion molding, expansion molding, vacuum molding, compressed air molding, blow molding, foam molding and other conventional resin molding methods. [Example]

Hereinafter, the embodiments of the invention will be described in detail through examples, but the embodiments of the invention are not limited by these examples.

＜Measurement method, evaluation method＞ The measurement method and evaluation method applied to the specimen are as follows.

[Composition Analysis] The composition of the specimen is determined by fluorescent X-ray analysis, HCN analysis, and TG-DTA (thermogravimetric analysis-differential thermal analysis). Each analysis method is as follows. [Fluorescence X-ray analysis] Measuring machine: ZSX Primus II, manufactured by Rigaku Measurement conditions and measurement elements: C～U (Fixed angle measurement for F, Cl, Br, I, BG 4sec., peak 8sec.) Analysis diameter: 20 mm Number of measurements: Measure with n2 Sample processing: use a tablet forming machine to press and shape the sample into pellets and provide measurement. Analysis software: ZSX version7.49 Mode: bulk [HCN analysis] Measuring machine: Yanaco CHNCORDERMT-5 type Measurement method: Finely weigh 2 mg of the sample, and use the above-mentioned measurement machine to perform the measurement. [TG-DTA] Measuring machine: made by Hitachi High-Tech Science, TG/DTA6300 Measurement method: After adding 7-8 mg of the sample to the aluminum sample weighing pan and fixing it, increase the temperature at 20°C/min to 600°C, and set the weight loss from room temperature to 100°C as the moisture content (attached water) , Determine the weight loss from 100°C to 250°C as crystal water.

[Powder X-ray diffraction] The X-ray diffraction device uses "D8 ADVANCE" manufactured by BRUKER. A Cu enclosed X-ray source was used, and CuKα generated with an applied voltage of 40 kV and a current value of 40 mA was used to obtain an X-ray diffraction pattern. The detailed measurement conditions are as follows. X-ray source: enclosed X-ray source (Cu-ray source), 0.4×12 mm ² , Long Fine Focus Rated: 2.2 kW Use output: 40 kV-40 mA (1.6 kW) Goniometer radius: 280 mm Sample stage: FlipStick_Twin_Twin-XE Measuring range 2θ: 5°～55° Step width: 0.02° Step time: 0.05 seconds/step Soller slit: 2.5° Anti-scatter slit: 10.5 mm Curvature: 1.00 Detector: LYNXEYE XE Detector slit width: 5.758 mm Detector window width: 2.9°

[Calculation of crystal size] For the composite oxide particles in Examples 1 to 2 and Comparative Example 1, the linewidth of the diffraction peak near the diffraction angle of 43.2° was obtained from the powder X-ray diffraction diagram, and obtained by Scherrer’s formula Crystal size. Xie Le’s formula: C=Kλ/Bcosθ C: Crystal size (nm) K: Sheryl constant (0.9) λ: X-ray wavelength (CuKα=1.5418 Å=0.15418 nm) B: The line width (radians) of the diffraction peak near the diffraction angle of 43.2°. The line width is the width of two points where the tangent to the inflection point on the left and right of the peak intersects the baseline. θ: Bragg angle (half the angle of diffraction 2θ, 2θ is the value of each specimen and is a value around 43.2°) For the hydrotalcite particles in Comparative Examples 2 to 4, the line width of the diffraction peak near the diffraction angle of 11.5° was obtained from the powder X-ray diffraction diagram, and the crystal size was obtained by Scherrer’s formula. The calculation method is the same as in Examples 1 and 2.

[Measurement of average particle size] A scanning electron microscope (manufactured by JEOL Ltd., model JSM-6330F) was used to determine the average primary particle size (nm) based on the number. A laser diffraction scattering type particle size distribution measuring device (manufactured by MicrotracBEL Co., Ltd., model MT3000) was used to determine the average secondary particle size (μm) based on the volume.

[Measurement of BET specific surface area] Using a gas adsorption capacity measuring device (manufactured by Quantachrome, model AUTOSORB-1), in accordance with JIS Z8830:2013 "Method for measuring the specific surface area of powder (solid) by gas adsorption", the adsorption capacity of nitrogen was measured, and The specific surface area was calculated according to the BET method.

[Measurement of conductivity and pH of eluent] Put 0.5 g of the sample in a pressure-resistant container made of polypropylene with a capacity of 100 mL. 50 mL of ion-exchanged water with a water temperature of 95°C was added thereto, and the mixture was stirred for 10 seconds to suspend it. Then, stop stirring, and after closing the lid on the container, use a hole opener to open a hole with a diameter of about 1 mm in the shoulder of the container. Place the container in a thermostat at 95°C for 20 hours. Then, the container was taken out from the thermostat, and the content was cooled to room temperature, and then the content was separated by filtration using a membrane filter with a pore size of 0.45 μm to obtain an eluent. In accordance with JIS K0130:2008 "General Rules for Measuring Electrical Conductivity", a conductivity meter (manufactured by Eutech, Model CyberScan CON400) was used to measure the conductivity (μS/cm) of the eluent at 25°C. In accordance with JIS Z8802: 2011 "pH Measurement Method", a glass electrode type hydrogen ion concentration meter (manufactured by Horiba Manufacturing Co., Ltd., model D-51) is used with pH4 standard solution (phthalate standard solution) and pH7 standard solution ( After calibration with neutral phosphate standard solution and pH9 standard solution (borate standard solution), measure the pH value of the eluent at 25°C.

[Determination of the adsorption capacity of acetic acid gas] The following tests are all performed at room temperature (25°C±3°C). In a test bag made of a vinyl alcohol polymer film, 0.03 g of the sample was added, 3 L of air was injected into it, and acetic acid was added so that the concentration of acetic acid in the gas in the test bag became 1000 ppm. Leave it for 2 hours, and then use a gas detection tube to determine the concentration of acetic acid (ppm) in the gas in the test bag. Calculate the amount of acetic acid (mL) adsorbed on the sample from the amount of change in the acetic acid concentration, and obtain the adsorption capacity (mL/g).

[Determination of acetic acid gas removal rate] The following tests are all performed at room temperature (25°C±3°C). In a test bag made of a vinyl alcohol-based polymer film, 0.01 g of a sample was added, 3 L of air was injected into it, and acetic acid was added so that the concentration of acetic acid in the gas in the test bag became 1000 ppm. Let it stand for 1 hour, and then use a gas detection tube to measure the concentration of acetic acid (ppm) in the gas in the test bag. The removal rate (%)={the amount of change in the acetic acid concentration (ppm) ÷ the initial acetic acid concentration (ppm) x 100} is calculated from the amount of change in the acetic acid concentration.

<Production of composite oxide particles> [Example 1] 396.4 g of MgCl ₂ ･6H ₂ O and 144.9 g of Al ₂ (SO ₄ ) _{3 were} dissolved in ion-exchanged water and set to 1 L (A liquid). 120.0 g of NaOH and 24.38 g of Na ₂ CO _{3 were} dissolved in ion-exchanged water and set to 1 L (liquid B). In a 2 L flask, 300 mL of ion-exchanged water was added, and while stirring the ion-exchange water, 0.59 L of A liquid and 1.1 L of B liquid were dropped to obtain a slurry. Liquid A and Liquid B were dripped at the same time, and both liquids took 60 minutes to drip. The solid matter contained in the slurry was separated by filtration, washed with water, dried at 150°C, and then pulverized to obtain hydrotalcite particles (1). As a result of analyzing the hydrotalcite particles (1), the composition formula is Mg _0.7 Al _0.3 (OH) ₂ (CO ₃ ) _0.15 ･0.55H ₂ O, and the BET specific surface area is 70.0 m ² /g. The hydrotalcite particles (1) were calcined in an electric furnace at 550°C for 2 hours to obtain composite oxide particles (1).

[Example 2] After preparing the slurry in the same manner as in Example 1 to obtain a slurry, the slurry was heated to 80°C and stirring was maintained for 30 minutes. Then, the solid matter contained in the slurry was separated by filtration, washed with water, dried at 150°C, and then pulverized to obtain hydrotalcite particles (2). As a result of analyzing the hydrotalcite particles (2), the composition formula is Mg _0.7 Al _0.3 (OH) ₂ (CO ₃ ) _0.15 ･0.55H ₂ O, and the BET specific surface area is 60.0 m ² /g. The hydrotalcite particles (2) were calcined in an electric furnace at 550°C for 2 hours to obtain composite oxide particles (2).

[Comparative Example 1] After preparing the slurry in the same manner as in Example 1 to obtain a slurry, the slurry was transferred to an autoclave and maintained while stirring at 170°C for 6 hours. After being taken out from the autoclave and cooled, the solid matter contained in the slurry was separated by filtration, washed with water, dried at 150°C, and pulverized to obtain hydrotalcite particles (3). As a result of analyzing the hydrotalcite particles (3), the composition formula is Mg _0.7 Al _0.3 (OH) ₂ (CO ₃ ) _0.15 ･0.55H ₂ O, and the BET specific surface area is 10.3 m ² /g. The hydrotalcite particles (3) were calcined in an electric furnace at 550°C for 2 hours to obtain composite oxide particles (3).

[Comparative Example 2] Prepare the hydrotalcite "KW-500" manufactured by Kyowa Chemical Industry Co., Ltd. This is called hydrotalcite particles (4).

[Comparative Example 3] Prepare the hydrotalcite "KW-1000" manufactured by Kyowa Chemical Industry Co., Ltd. This is called hydrotalcite particles (5).

[Comparative Example 4] Prepare the hydrotalcite "DHT-4C" manufactured by Kyowa Chemical Industry Co., Ltd. This is called hydrotalcite particles (6).

The measurement results and evaluation results of each example and each comparative example are shown in Table 1. Fig. 1 to Fig. 6 show powder X-ray diffraction diagrams of composite oxide particles or hydrotalcite in each Example and each Comparative Example using CuKα rays.

[Table 1]

Compared with the composite oxide particles (3) and the hydrotalcite particles (4) to (6), the composite oxide particles (1) and the composite oxide particles (2) have a larger acetic acid gas adsorption capacity. The acetic acid gas removal rate of the composite oxide particles (1) and the composite oxide particles (2) exceeded 99% in one hour.

Figure 1 is a powder X-ray diffraction diagram of composite oxide particles (1). The composite oxide particles (1) showed the largest peak at 2θ=43.2°. Figure 2 is a powder X-ray diffraction diagram of composite oxide particles (2). The composite oxide particles (2) showed the largest peak at 2θ=43.2°.

<Examples of the use of composite oxide particles> [Preparation of washing liquid] With respect to 3 L of water, 4 mL of "JAFET Standard Blended Cleaner" (prepared with polyoxyethylene alkyl ether and sodium α-olefin sulfonate) was added in a ratio of 4 mL to prepare a washing liquid. After heating it to 40°C, it is used for washing of polyethylene terephthalate (PET) non-woven fabric.

[Example 11] In a 500 mL beaker, 3 pieces of PET non-woven fabric (manufactured by Asahi Kasei Co., Ltd., ELTAS E01025) ^{cut into 10 cm squares (100 cm 2) were put into 300 mL of washing liquid heated to 40°C.} 0.05 g of the composite oxide particles (1) prepared in Example 1 was put therein, and a magnetic stir bar and a rotor with a length of 50 mm were used to stir at 500 rpm for 5 minutes. Then, after discarding the washing liquid, 300 mL of water with a temperature of 25° C. was poured into it and washed at 500 rpm for 5 minutes. Then, after discarding the water and wringing out lightly, use an air dryer to blow air at a temperature of 80°C for 10 minutes to dry.

The following tests are all performed at room temperature (25°C±3°C). In a test bag made of a vinyl alcohol polymer film, put a piece of washed PET non-woven fabric and inject 3 L of acetic acid gas (initial concentration 30 ppm), and use a gas detection tube to measure the test bag after 2 hours Residual gas concentration in. According to the deodorization test method (detection tube method) of the "SEK Mark Fiber Products Certification Standards" of the General Textile Evaluation Technology Council, the odor component reduction rate is calculated according to the following formula. The results are shown in Table 2. Odor component reduction rate (%)=(S ₀ -S _m )/S ₀ ×100 where S ₀ is the acetic acid after 2 hours when the sample is not put in the test bag (called "blank test") Gas concentration, S _m is the acetic acid gas concentration after 2 hours when the sample is put in the test bag.

[Example 12] The PET nonwoven fabric was washed in the same manner as in Example 11 except that the composite oxide particles (2) prepared in Example 2 were used instead of the composite oxide particles (1). Then, the same deodorizing performance test as in Example 11 was performed on the washed PET non-woven fabric. The results are shown in Table 2.

[Comparative Example 11] The PET nonwoven fabric was washed in the same manner as in Example 11 except that the composite oxide particles (3) prepared in Example 3 were used instead of the composite oxide particles (1). Then, the same deodorizing performance test as in Example 11 was performed on the washed PET non-woven fabric. The results are shown in Table 2.

[Comparative Examples 12-14] Except that hydrotalcite particles (4), hydrotalcite particles (5), or hydrotalcite particles (6) were used instead of composite oxide particles (1), the PET nonwoven fabric was washed separately in the same manner as in Example 11. Then, the same deodorizing performance test as in Example 11 was performed on the washed PET non-woven fabric. The results are shown in Table 2.

[Comparative Example 15] The composite oxide particles (1) were not used, and the PET non-woven fabric was washed in the same manner as in Example 11 with only the washing liquid. Then, the same deodorizing performance test as in Example 11 was performed on the washed PET non-woven fabric. The results are shown in Table 2.

[Table 2]

Compared with the PET non-woven fabric washed with the washing liquid added with composite oxide particles (3), hydrotalcite particles (4), hydrotalcite particles (5) or hydrotalcite particles (6), the non-woven fabric has been added with composite oxide The PET non-woven fabric washed with the washing liquid of the material particles (1) or the composite oxide particles (2) has a higher reduction rate of odor components after 2 hours. The odor component reduction rate of the PET non-woven fabric washed with the washing liquid added with the composite oxide particles (1) or the composite oxide particles (2) after 2 hours is 75% or 85%, and it is excellent for acetic acid Deodorizing performance. By the way, in the SEK mark related to deodorization processing, for acetic acid, the certification standard of the SEK mark (a certification system implemented by the General Incorporated Corporation Fiber Evaluation Technology Council) is a reduction rate of odor components of 70% or more.

The composite oxide particles in this case can be supplied to the washing of fibers, fiber products or fiber products, which can impart excellent deodorizing performance to the washed fibers, fiber products or fiber products.

The disclosure content of Japanese Patent Application No. 2020-017282 filed on February 4, 2020 is incorporated in this specification in its entirety by reference. All documents, patent applications, and technical specifications described in this specification are used by reference in this specification to the extent that each document, patent application, and technical specifications are specifically and to the same extent described in each case.

Figure 1 is a powder X-ray diffraction diagram of composite oxide particles (1) in Example 1. Figure 2 is a powder X-ray diffraction diagram of composite oxide particles (2) in Example 2. Figure 3 is a powder X-ray diffraction diagram of composite oxide particles (3) in Comparative Example 1. Figure 4 is a powder X-ray diffraction diagram of hydrotalcite particles (4) in Comparative Example 2. Figure 5 is a powder X-ray diffraction diagram of hydrotalcite particles (5) in Comparative Example 3. Figure 6 is a powder X-ray diffraction diagram of hydrotalcite particles (6) in Comparative Example 4.

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Claims (9)

A composite oxide particle comprising a composite oxide represented by the following formula (1), and in a powder X-ray diffraction pattern using CuKα rays, a diffraction peak is shown in the vicinity of a diffraction angle of 43.2°, and The crystal size obtained from the line width of the diffraction peak according to Schiller’s formula is 4.0 nm or less;

In formula (1), M ^{2 +} is a divalent metal ion, M ^{3 +} is a trivalent metal ion, x, y, and z are independently positive numbers, and 2x+3y=2z, which is used to form the metal element of ^{M 2 + and} The metal elements used to form M ^{3 +} can be the same kind of metal elements or different kinds of metal elements. The composite oxide particles according to claim 1, wherein after 0.5 g of the composite oxide particles are eluted in 50 mL of water at a temperature of 95°C for 20 hours, the conductivity of the eluted solution at 25°C is 200 μS/cm or more and 1000 μS/cm or less, and the pH of the eluent at 25° C. is 9.5 or more and 12.5 or less. The composite oxide particle according to claim 1 or 2, which has a BET specific surface area of 150 m ² /g or more and 300 m ² /g or less. The composite oxide particle according to any one of claims 1 to 3, wherein, in the aforementioned formula (1), M ^{2 +} is Mg ^{2 +} and M ^{3 +} is Al ^{3 +} . A deodorant comprising the composite oxide particles according to any one of claims 1 to 4. A cleaning composition comprising the composite oxide particles according to any one of claims 1 to 4. A detergent composition comprising the composite oxide particles according to any one of claims 1 to 4. A fiber product in which at least any one of the fiber surface and between the fibers contains the composite oxide particles according to any one of claims 1 to 4. A resin molded product comprising the composite oxide particles according to any one of claims 1 to 4.

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