JP6814084B2 - Deodorant paper - Google Patents

Description

The present invention relates to deodorant paper.

As a countermeasure against malodor derived from excrement such as urine in absorbent articles such as disposable diapers and sanitary napkins, a technology for incorporating a fragrance that masks malodor and an adsorbent that adsorbs malodor components into the sheet constituting the absorbent article has been developed. Are known. For example, Patent Document 1 describes a sheet-like structure applicable to an absorbent article obtained by contacting a base sheet with an aqueous solution of a polyvalent metal salt and an aqueous solution of a polyanion containing a functional component. As the functional component, deodorant porous bodies such as silver and zinc, deodorants, and fragrances are exemplified.

Patent Document 2 describes that an odor control agent is contained in a waste tape used when a used absorbent article is rolled up and discarded. This waste tape has a structure in which the first gas barrier layer and the second gas barrier layer are detachably integrated with each other via an adhesive containing an odor control agent. Patent Document 2 describes the odor control agent. As an example, an odor adsorbent such as a fragrance or a deodorant porous body is exemplified.

JP-A-2008-173615 Japanese Unexamined Patent Publication No. 2016-67912

When the fragrance and the adsorbent are used in combination, a part of the components of the fragrance is adsorbed by the adsorbent, so that the fragrance is modulated and the original fragrance of the fragrance may be hindered. In addition, the modulated scent could not sufficiently mask the malodor derived from excrement, and sometimes an unpleasant odor was exhibited when mixed with the malodor. Patent Documents 1 and 2 do not examine any problems caused by the combined use of such a fragrance and an adsorbent.

Therefore, the subject of the present invention relates to a deodorant paper that can solve the above-mentioned solution of the prior art.

The present invention contains a fragrance, a hydrophobic deodorant porous body and a hydrophilic deodorant porous body, and the fragrance contains a hydrophobic compound having an IOB value of 0.55 or less and an IOB value of 0.8 or more. It contains a hydrophilic compound, and the molar ratio D1 of the hydrophobic compound to the hydrophilic compound and the hydrophobic deodorant porous body to the hydrophilic deodorant porous body determined by the following formula (1). A deodorant paper having a ratio D1 / D2 with a hydrophilic ratio D2 of 0.5 or more and 3 or less.
D2 = (S1 x W1) / (S2 x W2) ... (1)
S1: Specific surface area (m ² / g) of the hydrophobic deodorant porous body
W1: Mass ratio of the hydrophobic deodorant porous body in the deodorant paper to the mass of the base material of the deodorant paper S2: Specific surface area (m ² / g) of the hydrophilic deodorant porous body
W2: Mass ratio of the hydrophilic deodorant porous body in the deodorant paper to the mass of the base material of the deodorant paper

According to the present invention, there is provided a deodorant paper in which modulation of the fragrance is prevented even when the fragrance and the adsorbent are used in combination.

FIG. 1 is an example of application of the deodorant paper of the present invention to an absorbent article, and is a schematic plan view of a sanitary napkin as the absorbent article on the skin-facing surface side (surface sheet side). FIG. 2 is a schematic cross-sectional view of the cross section taken along line II of FIG.

The deodorant paper of the present invention contains a fragrance. One of the main purposes of using a fragrance in the present invention is to reduce an unpleasant odor caused by excrement such as urine and vaginal discharge. Specifically, for example, the odor of putrefaction caused by mercaptan or hydrogen sulfide and the odor peculiar to vaginal discharge caused by diacetyl are masked and / or harmonized by the aroma of fragrance.

The fragrance according to the present invention contains a hydrophobic compound having an IOB value of 0.55 or less and a hydrophilic compound having an IOB value of 0.8 or more. The IOB value is an inorganic value / organic value value (hereinafter referred to as "IOB (Inorganic Organic Balance) value") which is a ratio of an inorganic value and an organic value of a substance.

In general, the properties of a substance are largely dominated by various intermolecular forces between molecules, and this intermolecular force mainly consists of Van der Waals force due to molecular mass and electrical affinity due to the polarity of molecules. If the Van der Waals force, which has a great influence on changes in the properties of substances, and the electrical affinity can be grasped individually, the properties of unknown substances or mixtures thereof can be predicted from the combination. be able to. This idea is a well-known theory as "organic conceptual diagram". For example, "Organic Analysis" by Akira Fujita (Kaniya Shoten, Showa 5), "Organic Qualitative Analysis: Systematic. Pure Material Edition" by Akira Fujita (Kyoritsu Publishing, 1953), Akira Fujita "Reorganized Chemical Experiments-Organic Chemistry" (Kawade Shobo, 1971), "Systematic Organic Qualitative Analysis (Mixed)" by Akira Fujita and Masami Akatsuka (Kazama Shobo, 1974), and Yoshio Koda. It is described in detail in "New Edition Organic Conceptual Diagram Basics and Applications" (Sankyo Publishing, 2008) by Shiro Sato and Yoshio Homma. In the physicochemical physical properties of substances, the degree of physical properties mainly due to Van Der Wals force is called "organic", and the degree of physical properties mainly due to electrical affinity is called "inorganic". The physical characteristics of a substance are captured by a combination of "organic" and "inorganic". Then, one carbon (C) is defined as organic 20, and the inorganic and organic values of various polar groups are defined as shown in Table 1 below, and the sum of the inorganic values and the organicity are defined. The sum of the values is calculated, and the ratio of the two is defined as the IOB value. In the present invention, the IOB value of the fragrance is determined based on these organic and inorganic values.

Specifically, the inorganic value and the organic value of each aroma component constituting the fragrance are determined, and the IOB value is calculated. For example, when citronellol shown in Table 2 below is contained as one component of the fragrance, an organic value of carbon (C) × 10 = 200, an inorganic value of −OH × 100 = 100, and a double bond × 1 Since it has an inorganic value of = 2 and an organic value of iso-branch × 2 = -20, the total of the inorganic values is 100 + 2 = 102, and the total of the organic values is 200-20 = 180. .. Therefore, the IOB value (inorganic value / organic value) is 102/180 = 0.57.

The fragrance used in the present invention contains as an aroma component a hydrophobic compound having an IOB value of 0.55 or less and a hydrophilic compound having an IOB value of 0.8 or more.
As hydrophobic compounds, 1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethyl-cyclopenta-γ-2-benzopyran, benzylbenzoate, p-tert-butyl Cyclohexylacetate, limonene, ethyl 2-cyclohexylpropionate, 2-methyl-4- (2,2,3-trimethyl-3-cyclopenten-1-yl) -2-buten-1-ol, 1- (2-tert -Butylcyclohexioxy) -2-butanol, nopill acetate and the like.
Further, examples of the hydrophilic compound include anisyl alcohol, linalool oxide, α-methyl-3,4-methylene-dioxyhydrocinnamiacaldehyde and the like.

In the fragrance according to the present invention, the molar ratio D1 of the hydrophobic compound to the hydrophilic compound, that is, the molar concentration of the hydrophobic compound / the molar concentration of the hydrophilic compound is preferably 0.3 or more, more preferably 0.5 or more. Yes, more preferably 3 or less, more preferably 2 or less, and preferably 0.3 or more and 3 or less, more preferably 0.5 or more and 2 or less. The molar ratio means a ratio of molar concentrations, and such a molar concentration means a value (mol / kg) calculated from the mass of the component contained in the constituent components of 1 kg of fragrance. The fragrance is composed of an aroma component of a hydrophobic compound, a hydrophilic compound, and an intermediate compound which is a compound other than these, and a component other than the aroma component such as a solvent.
When the fragrance contains a plurality of types of hydrophobic compounds or a plurality of types of hydrophilic compounds, the molar ratio D1 of the hydrophobic compound to the hydrophilic compound is the total molar concentration of the hydrophobic compounds / the total molarity of the hydrophilic compounds. The concentration.

For example, when the fragrance P contains two types of hydrophobic compounds A and B, which are fragrance components having an IOB of 0.55 or less, and one type of hydrophilic compound C, which is a fragrance component having an IOB of 0.8 or more. , The method of calculating the molar ratio D1 of the hydrophobic compound to the hydrophilic compound will be described. Since the fragrance P contains two kinds of hydrophobic compounds, the molar ratio D1 of the hydrophobic compound to the hydrophilic compound is the total molar concentration of the hydrophobic compounds A and B / the molar concentration of the hydrophilic compound C.
The molar ratio D1 of the hydrophobic compound to the hydrophilic compound may be the total number of moles of the hydrophobic compound in the fragrance / the total number of moles of the hydrophilic compound in the fragrance. For example, the mass of the fragrance P is W, the compounding ratio of the hydrophobic compound A with respect to the mass W of the fragrance P is X _A %, the compounding ratio of the hydrophobic compound B with respect to the mass W of the fragrance P is X _B %, and the molecular weight of the hydrophobic compound. When M _a, the molecular weight of the hydrophobic compound B and M _B, the total number of moles of the hydrophobic compound is determined by the following equation (3).
The total number of moles of the hydrophobic compound _{(mol) = (W × X} A / 100) / M A + (W × X B / 100) / M B ··· (3)
Further, the compounding ratio of the hydrophilic compound C with respect to the mass W of the perfume P X _C%, when the molecular weight M _C of the hydrophilic compound, the number of moles of the hydrophilic compound is obtained by the following equation (4).
The number of moles of the hydrophilic compound _{(mol) = (W × X} C / 100) / M C ··· (4)
The molar ratio D1 of the hydrophobic compound to the fragrance hydrophilic compound (molar concentration of the hydrophobic compound / molar concentration of the hydrophilic compound) is the total number of moles of the hydrophobic compound in the fragrance / the mole of the hydrophilic compound in the fragrance. It is represented by a number.

The molar ratio D1 of the hydrophobic compound to the hydrophilic compound, that is, the molar concentration of the hydrophobic compound / the molar concentration of the hydrophilic compound is preferably 0.3 or more, more preferably 0.5 or more, and preferably 3 or less. , More preferably 2 or less, preferably 0.3 or more and 3 or less, and more preferably 0.5 or more and 2 or less.

The calculation method of the molar ratio D1 of the hydrophobic compound to the hydrophilic compound will be described more specifically. The fragrance was 0.033 mol of 1- (2-tert-butylcyclohexioxy) -2-butanol and 0.012 mol of nopillacetate as the hydrophobic compound and 0.015 mol of the hydrophilic compound. When containing linalol oxide and 0.013 mol of α-methyl-3,4-methylene-dioxyhydrocinnamiacaldehyde, the molar ratio D1 of the hydrophobic compound to the hydrophilic compound is (0.033 + 0). .012) / (0.015 + 0.013) = 1.61.

The aroma component of the fragrance according to the present invention, that is, the aroma component of the hydrophilic compound, the hydrophobic compound, and the intermediate compound described later is the aroma of gas chromatography (GC), gas chromatography-mass spectrometer (GC-MS), or the like. As a method for qualitatively and quantifying the components, it can be specified by a conventionally used method.
For the fragrance according to the present invention, a 5 cm × 5 cm piece is collected from the center of one product, placed in a 100 mL vial, immersed in 100 mL of ethanol at room temperature (25 ° C) for 48 hours, and then ultrasonically used for 10 minutes. After extracting the fragrance component, the component extracted with ethanol is subjected to GC-MS analysis to measure the qualitative and blending amount of the fragrance component. Further, the above method is repeated three times, and the average value is taken as the blending amount of the fragrance.

The fragrance according to the present invention may contain an intermediate compound which is a compound other than the hydrophobic compound and the hydrophilic compound as an aroma component. As intermediate compounds, for example, linalool, geraniol, citronellol, benzyl acetate, phenylhexanol, beta-phenylethyl alcohol, 2-methyl-4- (2,2,3-trimethyl-3-cyclopentene-1-yl) -2-butene Examples thereof include -1-ol, cinnamyl alcohol and coumarin.
The fragrance according to the present invention does not have to contain an intermediate compound.

In the aroma components constituting the fragrance of the present invention, the hydrophobic compound, the hydrophilic compound and the intermediate compound may be those that volatilize in the atmosphere under atmospheric pressure, and the aroma is perceived in an environment of normal temperature and pressure. It is possible to use a compound that has been conventionally used in an absorbent article such as a panty liner. As the fragrance, for example, a highly volatile fragrance component having a boiling point of about 250 ° C. or lower, or a medium volatile fragrance component having a boiling point of about 250 to about 300 ° C. is preferably used.

Examples of the highly volatile fragrance component include anisole, benzaldehyde, benzyl acetate, benzyl alcohol, benzyl formate, isobornyl acetate, citroneral, citronellol, citronellyl acetate, paracimen, decanal, dihydrolinalol, dihydromyrsenol, and dimethylphenylcarbinol. Eucalyptor, 1-carboxylic, geraniol, geraniol, geranyl acetate, geranyl nitrile, neryl acetate, nonyl acetate, linalol, ethyl linalol, linaryl acetate, phenylethyl alcohol, α-pinene, β-pinene, γ-pinene, α- Examples thereof include yonon, β-yonone, γ-yonone, α-terpineol, β-terpineol, terpinyl acetate, tentalome and the like, and one of these can be used alone or in combination of two or more. Of these, citronellol, linalool, and geraniol can be preferably used.

Examples of the medium volatile fragrance component include amylcinnamaldehyde, methyl dihydrojasmonate, isoamyl salicylate, β-cariophyllene, sedrene, cedrene methyl ether, katsura alcohol, coumarin, dimethylbenzylcarbinate acetate, isoeugenol, and γ-methylyonone. , Heliotropin, hexyl salicylate, cis-3-hexenyl salicylate, phenylhexanol, pentalide and the like, and one of these can be used alone or in combination of two or more.

Further, as the fragrance according to the present invention, in addition to the above-mentioned highly volatile and medium volatile fragrance components, or in addition to these fragrance components, there are rose fragrance, lavender fragrance, jasmine fragrance, and Iran-Iran fragrance. A fragrance composition containing a fragrance can also be used. Examples of such a fragrance composition include nerol, lavandulol, jasmar, cyclopidene and the like, and one of these can be used alone or in combination of two or more. The fragrance according to the present invention includes the above-mentioned fragrance material alone, and a combination of fragrance materials composed of a plurality of fragrances (fragrance composition) such as natural essential oils and compounding bases, which are diluted with a solvent. "Adjusted" is included. For example, as the fragrance, a fragrance composition containing a fragrance having a rose, lavender, jasminum, or Iran-Iran-like fragrance can be used.

The content of the fragrance according to the present invention is not particularly limited, and can be appropriately set according to the type of fragrance, the usage pattern of the deodorant paper of the present invention, and the like. For example, when the deodorant paper of the present invention is interposed between the front surface sheet and the back surface sheet of the napkin 1 (see FIGS. 1 and 2) described later, the content of the fragrance in the deodorant paper is set to the basis weight. It is preferably 0.1 g / m ² or more, more preferably 0.2 g / m ² or more, and preferably 1 g / m ² or less, still more preferably 0.5 g / m ² or less. By setting the content of the fragrance above these lower limits, it becomes easier for the user to recognize the scent, and by setting it below the upper limit, the transfer of the fragrance from the product using deodorant paper to another product is suppressed. can do.
The fragrance content refers to the total content of hydrophobic compounds, hydrophilic compounds, and compounds other than these compounds.

The deodorant paper of the present invention contains a porous substance having a large number of pores as a deodorant porous body in addition to a fragrance, which adsorbs the odor derived from excrement and exhibits a deodorizing effect. ing. The deodorant paper of the present invention includes a hydrophobic deodorant porous body and a hydrophilic deodorant porous body as the deodorant porous body.
In addition to the adsorption performance that adsorbs the odor derived from excrement, the deodorant porous body has the deodorizing performance that directly acts on the odor such as neutralizing or decomposing the odor, and the antibacterial performance that acts on the source of the odor such as germs. May be provided. From the viewpoint of providing deodorant performance and antibacterial performance, the deodorant porous body preferably supports an antibacterial substance such as metal. That is, the deodorant porous body is preferably a metal-supported porous substance that supports a metal.

The deodorant paper of the present invention uses a hydrophobic deodorant porous body as the deodorant porous body. In the present invention, the hydrophobic deodorant porous body or hydrophilicity is determined based on the ratio (%) of the dry weight (b) to the collected weight (a) determined by the following [method for determining the hydrophobicity of the deodorant porous body]. Determine the deodorant porous body.
[Method for determining the hydrophobicity of deodorant porous material]
Put 300 mL of deionized water and stirrer chips in a 500 mL beaker, add 1 g of deodorant porous material, stir for 1 minute at 200 rpm, collect the deodorant porous material floating on the water surface, and weigh it. Measured as weight (a). Further, the collected deodorant porous body is dried at 105 ° C. for 12 hours, and then the weight thereof is measured as the dry weight (b). Next, the ratio (%) of the dry weight (b) to the collected weight (a), that is, the collected weight (a) / the dry weight (b) × 100 (%) is determined. A deodorant porous body in which the ratio (%) of the dry weight (b) to the collected weight (a) is 70% or more is defined as a hydrophobic deodorant porous body.

From the viewpoint of easily forming a hydrophobic porous body, the hydrophobic deodorant porous body is preferably an organic substance, that is, an organic porous substance, and examples thereof include a porous body made of activated carbon and an amine compound. Further, from the viewpoint of providing deodorant performance and antibacterial performance, a metal-supported organic porous substance is more preferable. Examples of the metal supported in the hydrophobic deodorant porous body include copper, silver, gold, lead, nickel, tin, zinc, iron and zirconium. Examples of the metal-supported organic porous substance include activated carbon activated with zinc, which is a divinylbenzene-2-vinylpyridine-2-vinylpyridine silver copolymer (for example, described in JP-A-2006-307404).
Further, as the hydrophobic deodorant porous body, the porous deodorant particles and the porous polymer described in JP-A-2008-62029, JP-A-2008-63711, and JP-A-2010-138344 are used. Can be done.

The deodorant paper of the present invention uses a hydrophilic deodorant porous body as the deodorant porous body. In the present invention, the ratio (%) of the dry weight (b) to the collected weight (a) determined by the above-mentioned [method for determining the hydrophobicity of the deodorant porous body], that is, the collected weight (a) / dry weight (b) ×. A deodorant porous body in which 100 (%) is 50% or less is defined as a hydrophilic deodorant porous body.
From the viewpoint of easily forming a hydrophilic porous body, the hydrophilic deodorant porous body is preferably an inorganic substance, that is, an inorganic porous substance, for example, zirconium phosphate, aluminum / sodium silicate nitrite, silicon dioxide, and the like. Examples include composites of aluminum oxide. Further, from the viewpoint of providing deodorant performance and antibacterial performance, a metal-supported inorganic porous substance is more preferable. As the metal supported in the hydrophilic deodorant porous body, the same metal as the metal supported in the hydrophobic deodorant porous body described above can be used. Examples of the metal-supported inorganic porous material include silver zeolite, divinylbenzene-2-vinylpyridine-2-vinylpyridine-silver copolymer (for example, those described in JP-A-2006-307404), and aluminum / silver / sodium nitrate. Examples thereof include silicates (for example, those described in JP-A-2005-232654), composites of silicon diate, zinc oxide and aluminum oxide, silver zirconium phosphate, and mixtures of silver and zinc zeolite.

In the deodorant paper of the present invention, the above-mentioned hydrophobic deodorant porous body and hydrophilic deodorant porous body can be used alone or in combination of two or more as the deodorant porous body.

The deodorant porous body may adsorb not only the malodor derived from excrement but also the aroma component constituting the fragrance, which not only impairs the deodorizing ability of the deodorant porous body and the original masking performance of the fragrance. In some cases, the scent of the modulated fragrance was mixed with a foul odor to give an unpleasant odor. On the other hand, as a result of the present inventor examining the relationship between the deodorant porous body and the modulation of the fragrance, the molar ratio D1 of the hydrophobic compound to the hydrophilic compound in the fragrance and the hydrophobic deodorant porous to the hydrophilic deodorant porous body When the ratio D1 / D2 to the hydrophilic ratio D2 of the body is 0.5 or more and 3 or less, the deodorizing ability of the deodorant porous body can be improved even if the fragrance and the deodorant porous body which is an adsorbent are used in combination. It was found that while maintaining, the modulation of the fragrance was prevented. By preventing the modulation of the fragrance, the deodorant paper can have the masking performance inherent to the fragrance, and the user of the deodorant paper can enjoy a fresh scent without modulation.

The hydrophobic ratio D2 of the hydrophobic deodorant porous body to the hydrophilic deodorant porous body is calculated by the following formula (1).
D2 = (S1 x W1) / (S2 x W2) ... (1)
S1: Specific surface area of hydrophobic deodorant porous body (m ² / g)
W1: Mass ratio of hydrophobic deodorant porous material in deodorant paper to mass of base material of deodorant paper S2: Specific surface area of hydrophilic deodorant porous material (m ² / g)
W2: Mass ratio of the hydrophilic deodorant porous body in the deodorant paper to the mass of the base material of the deodorant paper The hydrophobic ratio D2 of the hydrophobic deodorant porous body to the hydrophilic deodorant porous body is described below. It is also simply referred to as a hydrophilic ratio D2.

The specific surface area of the deodorant porous body is measured by the following method. In measuring the physical properties such as the specific surface area of the deodorant porous body, deodorize the deodorant paper with a tweezers or the like while checking the deodorant paper with a digital microscope (VHX-900) manufactured by Keyence Co., Ltd. The odorous porous body can be taken out. The method for taking out this deodorant porous body is also common to other measurements in the present specification.

<Measurement method of specific surface area of deodorant porous body>
The specific surface area of the deodorant porous body can be measured by the BET 1-point method using a BET surface area measuring device (BELSORP-MR6 manufactured by Microtrac Bell Co., Ltd.). As the adsorbed gas, a gas having 30% by volume of nitrogen and 70% by volume of helium is used. As a pretreatment of the sample, the adsorbed gas is circulated at 120 ° C. for 10 minutes, then the cell containing the sample is cooled with liquid nitrogen, the temperature is raised to room temperature after the adsorption is completed, and the amount of desorbed nitrogen is used to determine the sample. The specific surface area is calculated by determining the surface area and dividing the value of the surface area by the mass of the sample.

From the viewpoint of achieving both the adsorption performance of malodor derived from excrement and the prevention of fragrance modulation, the hydrophobic deodorant porous body has a specific surface area S1 of preferably 100 m ² / g or more, more preferably 150 m ² / g. The above, preferably 2000 m ² / g or less, more preferably 1500 m ² / g or less, further preferably 700 m ² / g or less, and preferably 100 m ² / g or more and 2000 m ² / g or less, more preferably. It is 150 m ² / g or more and 1500 m ² / g or less, more preferably 150 m ² / g or more and 700 m ² / g or less.

From the same viewpoint, the hydrophilic deodorant porous body has a specific surface area S2 of preferably 80 m ² / g or more, more preferably 120 m ² / g or more, and preferably 1000 m ² / g or less, more preferably 1000 m ² / g or less. It is 800 m ² / g or less, preferably 80 m ² / g or more and 1000 m ² / g or less, and more preferably 120 m ² / g or more and 800 m ² / g or less.

The deodorant porous body contained in the deodorant paper of the present invention can be qualitatively and quantified by the methods shown below.
A 5 cm x 5 cm measurement sample containing a deodorant porous body is taken from deodorant paper, placed in a glass cylindrical container such as a screw tube together with water, rotated and stirred, and the constituent fibers of the deodorant paper and deodorant are deodorized. Separate from the porous body by the difference in specific gravity. A solvent (methanol) is added to the separated deodorant porous body, and after vibrating and stirring with ultrasonic waves, a solvent filter (manufactured by Kanto Chemical Co., Inc., manufactured by PTFE resin, pore diameter 0.45 μm, 25 mmφ) is used. ), And the solvent in the filtrate is volatilized to obtain a solid content. The solids are separated to give a single compound using known analytical means such as liquid chromatography. The chemical structure of the compound thus separated is specified by using well-known analytical means such as infrared absorption spectroscopy and nuclear magnetic resonance spectroscopy. In addition, using an agent having a specified chemical structure as a standard substance, a calibration curve is prepared by a well-known analytical means such as gas chromatography or liquid chromatography, and a hydrophobic deodorant porous body or hydrophilic deodorant in deodorant paper is prepared. Quantify the porous body.

The mass ratio W1 of the hydrophobic deodorant porous body in the deodorant paper to the mass of the base material of the deodorant paper is the hydrophobic deodorant porous body contained in the deodorant paper with respect to the mass of the base material of the deodorant paper. It is the ratio of the mass of the body. Here, the base material of the deodorant paper means the constituent fibers of the deodorant paper.
The content of the hydrophobic deodorant porous body with respect to the mass of the base material of the deodorant paper from the viewpoint of yield in producing deodorant paper and improving the deodorizing performance and the effect of suppressing the modulation of the fragrance of the fragrance. The ratio W1 of W1 is preferably 0.1% by mass or more, more preferably 0.15% by mass or more, preferably 4% by mass or less, more preferably 3% by mass or less, and preferably 0.1. It is mass% or more and 4 mass% or less, more preferably 0.15 mass% or more and 3 mass% or less.

The mass ratio W2 of the hydrophilic deodorant porous body in the deodorant paper to the mass of the base material of the deodorant paper is the hydrophilic deodorant porous body contained in the deodorant paper with respect to the mass of the base material of the deodorant paper. It is the ratio of the mass of the body.
The content of the hydrophilic deodorant porous material with respect to the mass of the base material of the deodorant paper from the viewpoint of yield in producing deodorant paper and improving the deodorizing performance and the effect of suppressing the modulation of the fragrance of the fragrance. The ratio W2 of W2 is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, preferably 4% by mass or less, more preferably 3% by mass or less, and preferably 0.1. It is mass% or more and 4 mass% or less, more preferably 0.2 mass% or more and 3 mass% or less.

From the viewpoint of further suppressing the modulation of the fragrance of the fragrance and improving the effect of deodorizing the bad odor during use, the hydrophobicity ratio D2 is preferably 0.6 or more, more preferably 0.65 or more, and also. It is preferably 2.5 or less, more preferably 2.1 or less, and preferably 0.6 or more and 2.5 or less, more preferably 0.65 or more and 2.1 or less.

As described above, the ratio D1 / D2 of the hydrophobic compound to the hydrophilic compound in the fragrance is 0.5 or more and 3 or less, but the modulation of the fragrance fragrance is further suppressed. From the viewpoint of improving the masking performance and further deodorizing the malodor during use, the ratio D1 / D2 of the molar ratio D1 of the hydrophobic compound to the hydrophilic compound in the fragrance and the polyhydrophobic ratio D2 is preferably 0. 7 or more, more preferably 0.75 or more, preferably 2.7 or less, more preferably 2.5 or less, and preferably 0.7 or more and 2.7 or less, more preferably 0.75 or more. It is 2.5 or less.

Particles are preferable as the form of the deodorant porous body used in the present invention. When the form of the deodorant porous body contained in the deodorant paper is particles, it is expected that the odor is adsorbed on the particle surface of the deodorant porous body, and the unpleasant odor caused by excrement is further effective. Can be reduced. The shape of the particles of the deodorant porous body is not particularly limited, and may be, for example, spherical, bale-shaped, or indefinite shape.

The average particle size of the particles of the deodorant porous body used in the present invention is preferably 0.01 μm or more, more preferably 0.1 μm or more, preferably 1000 μm or less, more preferably 500 μm or less, and preferably 0. It is 0.01 μm or more and 1000 μm or less, more preferably 0.1 μm or more and 500 μm or less. When the average particle size of the particles of the deodorant porous body is in such a range, the odor adsorption effect is improved, and the deodorant produced when the deodorant paper is produced by the wet papermaking method as described later. It is possible to suppress the deterioration of the texture of the paper. Since the deodorant porous material is unevenly distributed in the deodorant paper having a poor texture, there is a concern that the deodorizing function may be deteriorated, and that the physical strength of the sheet may be lowered. The average particle size of the particles of the deodorant porous body is measured by the following method.

<Measuring method of average particle size of particles>
The average particle size of particles such as a deodorant porous body can be measured by a laser diffraction / scattering type particle size distribution measuring device (for example, LA-960 manufactured by HORIBA, Ltd.) according to a conventional method. The measurement conditions are as follows.
-Measurement cell: Flow cell-Particle size standard: Volume-Dispersion medium: Appropriate solvent with good particle dispersibility, for example, ethanol / distilled water = 90/10% by mass
・ Dispersion method: stirring, built-in ultrasonic wave 3 minutes ・ Transmittance: 70-90%
-Sample concentration: 0.1%

From the viewpoint of yield and cost in producing deodorant paper, the content of the deodorant porous body, that is, the total content of the hydrophobic deodorant porous body and the hydrophilic deodorant porous body is the base material of the deodorant paper. It is preferably 0.5% by mass or more, more preferably 0.8% by mass or more, preferably less than 5% by mass, more preferably 3% by mass or less, and preferably 0. It is 5% by mass or more and less than 5% by mass, more preferably 0.8% by mass or more and 3% by mass or less.
In the present invention, the mass of the base material of the deodorant paper means the dry mass of all the constituent fibers of the deodorant paper.

From the viewpoint of further improving the deodorizing performance, the deodorizing paper according to the present invention has a hydrogen sulfide adsorption amount measured by the following method for measuring the hydrogen sulfide adsorption amount, preferably 0.035 ppm / cm ² or more, more preferably. Is 0.04 ppm / cm ² or more, more preferably 0.05 ppm / cm ² or more, preferably 2 ppm / cm ² or less, more preferably 1.5 ppm / cm ² or less, and preferably 0.035 ppm. / cm ² or more 2 ppm / cm ² or less, more preferably 0.04 ppm / cm ² or more 1.5 ppm / cm ² or less, more preferably 0.05 ppm / cm ² or more 1.5 ppm / cm ² or less.
Hydrogen sulfide is the main component of the putrid odor of human excrement. It is judged that the larger the amount of hydrogen sulfide adsorbed, the higher the effect of reducing the unpleasant odor caused by excrement, and the higher the evaluation. When the amount of hydrogen sulfide adsorbed is 0.035 ppm / cm ² or more, bad odors such as putrefactive odors can be deodorized firmly.

<Measurement method of hydrogen sulfide adsorption amount>
An Erlenmeyer flask with an internal volume of 500 mL containing the deodorant paper of 65 mm × 100 mm is filled with 4 ppm of hydrogen sulfide and sealed for 30 minutes. Then, the amount of residual hydrogen sulfide remaining in the Erlenmeyer flask with a stopper is measured using a hydrogen sulfide detector tube, and the amount of hydrogen sulfide adsorbed per unit area is determined by the following formula (2).
Hydrogen sulfide adsorption amount (ppm / cm ² ) = [4ppm-residual hydrogen sulfide amount (ppm)] / 65cm ² ... (2)

The amount of hydrogen sulfide adsorbed is appropriately determined by three factors such as the specific surface area of the deodorant porous body contained in the deodorant paper, the weight of the deodorant porous body with respect to the deodorant paper, and the amount of metal supported with respect to the weight of the deodorant porous body. By combining them, the above-mentioned numerical range can be obtained. Further, by containing the inorganic particles described later, the amount of hydrogen sulfide adsorbed can be within the above range.

The base material of the deodorant paper according to the present invention is preferably made mainly of pulp fibers. Here, "mainly" means that the content of pulp fibers in the deodorant paper is 50% by mass or more.

The pulp fiber used in the present invention has a freeness of 450 mL or more, preferably 500 mL or more, and 680 mL or less, preferably 600 mL or less, more specifically 450 to 680 mL, preferably 500 to 600 mL. Freeness is a value indicated by the Canadian standard freeness (CSF) specified in JIS P8121, and is a process of beating pulp fibers (a process of mechanically beating and grinding pulp fibers in the presence of water). ) Is a value indicating the degree of. Generally, the smaller the freeness value, the stronger the degree of beating, the greater the damage to the fibers due to beating, and the more fibrilized. The beating of the pulp fibers can be carried out according to a conventional method using a known beating machine such as a beater or a disc refiner on the paper material (slurry) in which the pulp fibers are dispersed.

In the present invention, the main reason for adjusting the freeness of the pulp fiber to the above range is to fix the deodorant porous body contained in the deodorant paper according to the present invention to the surface of the pulp fiber to prevent the deodorant porous body from falling off. This is to suppress it. In pulp fibers having freeness in the above range, the relatively large fibrils forming the pulp fibers are appropriately unraveled, and fine microfibrils are fluffed on the fiber surface. The fluffed microfibrils cause fluffing. The formed space functions as a holding portion for fine particles such as a deodorant porous body, and the deodorant porous body that has entered the space is unlikely to cause extreme movement or falling off. Further, when the deodorant paper according to the present invention is produced by the wet papermaking method, if the dehydration rate of the wet web formed on the wire of the wet paper machine is too fast, the deodorant porous body falls off during the dehydration. Where there is a risk, when the freeness of the pulp fiber is within the above range, rapid dehydration is suppressed, so that the deodorant porous body is suppressed from falling off during dehydration of the wet papermaking. However, in order to effectively suppress the deodorant porous body from falling off, it is not enough to adjust the freeness of the pulp fiber within the above range, and as will be described later, the average particle size and grains of the deodorant porous body. It is also necessary to adjust the diameter distribution and content rate.

When the freeness of the pulp fiber is 450 mL or more, the dehydration rate of the wet web can be maintained and the productivity can be kept high when the deodorant paper according to the present invention is produced by the wet papermaking method. Good alignment is maintained, gaps are created between the pulp fibers, and the liquid permeation time described later is increased. Further, when the deodorant paper according to the present invention is produced by the wet papermaking method, agglomerates of pulp fibers are unlikely to be formed in the dispersed state of the water slurry, and a local difference in dehydration rate is unlikely to occur. The deodorant porous material is easily uniformly dispersed on the deodorant paper obtained through drying. On the other hand, when the freeness of the pulp fiber is 680 mL or less, the deodorant porous body is easily supported.

The pulp fiber can be used without particular limitation as long as it is a fiber having a hydrophilic surface and the fibers can form a sheet having a high degree of freedom with each other in a wet state. Examples of such pulp fibers include natural cellulose fibers (hydrophilic cellulose fibers), and more specifically, for example, coniferous bleached kraft pulp (NBKP), broadleaf bleached kraft pulp (LBKP), and coniferous bleached sulfite pulp. (NBSP), wood pulp such as thermomechanical pulp (TMP); bast fibers such as 楮, sansho, and ganpi; non-wood pulp such as straw, bamboo, kenaf, hemp, and cotton. In particular, NBKP and LBKP, especially NBKP, have a relatively long fiber length and it is easy to obtain sheet strength, and a sheet using this has a large porosity between fibers and is excellent in liquid permeability. Therefore, in the present invention, pulp is used. It is preferably used as a fiber.

The deodorant paper according to the present invention preferably contains at least NBKP as the pulp fiber, and further preferably contains LBKP as the pulp fiber, if necessary. In the deodorant paper according to the present invention, the content mass ratio of LBKP and NBKP is preferably NBKP: LBKP = 100/0 to 70/30, and more preferably 100/0 to 90/10.

The deodorant paper according to the present invention may contain fibers other than pulp fibers (polyester fiber, rayon fiber, synthetic fiber such as acrylic fiber, etc.) as its constituent fibers.

When a metal-supported porous substance is used for the deodorant porous body, the deodorant paper of the present invention has an inorganic particle having a specific surface area of 50 m ² / g or less from the viewpoint of suppressing deterioration of the antibacterial performance of the metal-supported porous substance. Is preferably contained. Examples of these inorganic particles include zeolite, calcium carbonate, calcium citrate, magnesium carbonate, magnesium hydroxide and the like. Since the specific surface area is 50 m ² / g or less, the specific surface area is 80 m ² / g or more. Distinguished from deodorant porous material. Further, unlike the above-mentioned metal-supporting porous substance, the inorganic particles do not include those supporting a metal.

From the viewpoint of more reliably suppressing the deterioration of the antibacterial performance, the content of the inorganic particles in the deodorant paper according to the present invention is preferably 0.1% by mass or more with respect to the mass of the base material of the deodorant paper. , More preferably 1% by mass or more, and preferably 10% by mass or less, still more preferably 5% by mass or less.
From the same viewpoint, the average particle size of the inorganic particles is preferably 0.1 μm or more, more preferably 1 μm or more, preferably 50 μm or less, more preferably 30 μm or less, and preferably 0.1 μm or more and 50 μm. Hereinafter, it is more preferably 1 μm or more and 30 μm or less.
The specific surface area of the inorganic particles is 50 m ² / g or less, preferably 0.5 m ² / g or more, more preferably 1.5 m ² / g or more, and preferably 40 m ² / g or less. It is more preferably 30 m ² / g or less, preferably 0.5 m ² / g or more and 40 m ² / g or less, and more preferably 1.5 m ² / g or more and 30 m ² / g or less.
The qualitative, quantitative, average particle size and specific surface area of the inorganic particles can be measured by the same method as the above-mentioned deodorant porous body.

The deodorant paper according to the present invention may contain other components other than the above-mentioned fragrance, deodorant porous body, constituent fibers such as pulp fibers, and inorganic particles. Other components include, for example, wet paper strength enhancers, dry paper strength enhancers, flocculants, fixing agents, texture adjusters, release agents, fillers such as talc, dyes, color pigments, antibacterial agents, and pH adjusters. Agents, water resistant agents, antifoaming agents and the like can be mentioned, and one of these agents can be used alone or in combination of two or more.

From the viewpoint of achieving both the flexibility of the deodorant paper and the strength at the time of liquid absorption, the deodorant paper preferably contains a wet paper strength agent. The content of the wet paper strength agent is preferably 0.2% or more, more preferably 0.4% or more, and preferably 2% or less, more preferably 1 with respect to the mass of the base material of the deodorant paper. % Or less, preferably 0.2% or more and 2% or less, and more preferably 0.4% or more and 1% or less.
Examples of the wet paper strength agent include epichlorohydrin resin.

The deodorant paper preferably contains a coagulant from the viewpoint of achieving both the loading ratio of the deodorant porous body in the deodorant paper and the texture of the deodorant paper. The content of the flocculant is preferably 0.01% or more, more preferably 0.02% or more, and preferably 0.1% or less, more preferably 0.1% or more, based on the mass of the base material of the deodorant paper. It is 0.05% or less, preferably 0.01% or more and 0.1% or less, and more preferably 0.02% or more and 0.05% or less.
Examples of the flocculant include polyacrylamide salts.

From the viewpoint of achieving both visibility and cost, the deodorant paper preferably contains a dye. The content of the dye is 0.01% or more, preferably 0.02% or more, and 0.1% or less, preferably 0.05% or less, based on the mass of the base material of the deodorant paper. Further, it is 0.01% or more and 0.1% or less, preferably 0.02% or more and 0.05% or less.

The basis weight of the deodorant paper of the present invention is not particularly limited, and may be appropriately set according to the intended use of the deodorant paper. For example, when the deodorant paper of the present invention is interposed between the front surface sheet and the back surface sheet as in the napkin 1 (see FIGS. 1 and 2) described later, the basis weight of the base material constituting the deodorant paper is used. Is preferably 10 g / m ² or more, more preferably 15 g / m ² or more, and preferably 50 g / m ² or less, still more preferably 40 g / m ² or less.
Further, the deodorant paper of the present invention may have a single-layer structure or may have a laminated structure in which two or more layers are laminated.
It is generally known to apply crepes (paper folds) to soften the base material constituting the deodorant paper. The crepe rate of the base material is not particularly limited, and may be appropriately set according to the use of the deodorant paper and the like. For example, when the deodorant paper of the present invention is interposed between the front surface sheet and the back surface sheet as in the napkin 1 (see FIGS. 1 and 2) described later, the crepe ratio of the base material constituting the deodorant paper is used. Is preferably 5% or more, more preferably 10% or more, and preferably 30% or less, still more preferably 20% or less, from the viewpoint of softness and strength.

The deodorant paper of the present invention can be produced by adding a fragrance and a deodorant porous body to the production intermediate thereof. The production method of the present invention can be produced according to a known wet papermaking method, and can be produced, for example, by the production method having the following steps (i) and (ii).
(I) A step of dehydrating a fiber material such as a cellulosic fiber, a deodorant porous body, and a suspension containing water using a papermaking net to form a wet paper containing the deodorant porous body.
(Ii) A step of adding a fragrance to the wet paper or a paper obtained by drying the wet paper.

The step (i) can be carried out according to a conventional method using a known wet paper machine, and for example, the method for producing a papermaking body described in JP-A-2009-155743 can be carried out. ..
In the step (ii), for example, the fragrance can be perfume by applying the fragrance to the wet paper obtained in the step (i) or the dried paper. Whether the target of perfume to be perfume is wet paper or paper obtained by drying wet paper may be appropriately selected according to the type of perfume to be used and the like. When applying a fragrance to perfume, if necessary, it may be dissolved in an appropriate solvent such as water or various organic solvents, and the fragrance-containing liquid may be applied. The method of applying the fragrance is not particularly limited, and examples thereof include a spraying method, a brush coating method, a dipping method, and a coating method using a bar coater, a gravure coater, various roll coaters, and the like.

1 and 2 show a sanitary napkin 1 provided with the deodorant paper as an application example of the deodorant paper of the present invention. The napkin 1 has a vertical direction X corresponding to a direction extending from the ventral side of the wearer to the dorsal side via the crotch part and a lateral direction Y orthogonal to the vertical direction X, and a liquid excretion part (vaginal opening) of the wearer when worn. Etc.), it has an excretory region A arranged opposite to the above, and an anterior region B and a posterior region C extending before and after the excretory region A. The napkin 1 has a shape that is long in the vertical direction X and is confined inward in the horizontal direction Y in the excretory region A (center of the vertical direction X) in a plan view as shown in FIG.

The napkin 1 includes a front surface sheet 2 and a back surface sheet 3 that is farther from the wearer's skin than the front surface sheet 2, and the deodorant paper 4 is arranged between the two sheets 2 and 3 in a folded state. There is. The front surface sheet 2 and the back surface sheet 3 each have a size larger than that of the deodorizing paper 4, and extend outward from the peripheral edge of the deodorizing paper 4, and at the extending portion thereof, an adhesive, a heat seal, and a super The peripheral seal portion 5 is formed by being bonded to each other by a known bonding means such as an ultrasonic seal. The deodorant paper 4 in the folded state extends from the front region B to the rear region C, and has a rectangular shape long in the vertical direction X in a plan view. The front surface sheet 2 and the back surface sheet 3 and the deodorant paper 4 may be bonded by an adhesive. Further, as shown in FIG. 2, on the non-skin facing surface of the napkin 1 (non-skin facing surface of the back sheet 3), an adhesive portion (not shown) for fixing the napkin 1 to clothes (not shown) such as shorts is used. ) Is provided, and this adhesive portion is covered with a release sheet (not shown) when not in use. As the front surface sheet 2 and the back surface sheet 3, those usually used in absorbent articles such as sanitary napkins can be used without particular limitation. As the surface sheet 2, for example, a hydrophilic non-woven fabric or a perforated film having liquid permeability can be used, and these non-woven fabrics and films are generally thermoplastic resins such as polyolefin resins such as polyethylene and polypropylene, and polyethylene terephthalate. It is composed of a polyester resin or the like. As the back sheet 3, for example, a poorly permeable film or a non-woven fabric can be used, and the poorly permeable film may have moisture permeability.

In the present specification, the "skin facing surface" is a surface of the absorbent article or its constituent members (for example, the surface sheet 2) that faces the wearer's skin side when the absorbent article is worn, that is, relatively worn. The side close to the skin of a person, and the "non-skin facing surface" is the surface of the absorbent article or its constituent members that faces the opposite side (clothing side) to the skin side when the absorbent article is worn, that is, relative to the skin. On the side far from the wearer's skin. In addition, "when worn" here means a state in which a normal proper wearing position is maintained.

As shown in FIG. 2, a liquid-permeable second sheet 6 is arranged between the surface sheet 2 and the deodorant paper 4. The second sheet 6 is a constituent member of an absorbent article, which is also called a sublayer sheet in the present technical field, and improves the permeability of the liquid from the surface sheet 2 to the deodorant paper 4, and the liquid absorbed by the deodorant paper 4. It plays a role of reducing the liquid return to the surface sheet 2. In the napkin 1, the second sheet 6 covers substantially the entire area of the deodorant paper 4 facing the skin. As the second sheet 6, a hydrophilic non-woven fabric or a hydrophilic fiber aggregate can be used, and examples of the non-woven fabric include an air-through non-woven fabric, a point-bonded non-woven fabric, a resin-bonded non-woven fabric, a spunlace non-woven fabric, and an air-laid non-woven fabric.

As shown in FIG. 1, a plurality of circular recesses 7 in a plan view are formed on the skin-facing surface of the surface sheet 2, and the surface sheet 2 and the second sheet 6 are joined to each other by the recesses 7. The plurality of recesses 7 are intermittently arranged in each of the first direction orthogonal to both the vertical direction X and the horizontal direction Y and the second direction intersecting the first direction, whereby the surface sheet 2 is provided with the plurality of recesses 7. A plurality of first discontinuities extending in the first direction are arranged in parallel to each other at predetermined intervals in the second direction on the skin facing surface, and a plurality of second lines extending in the second direction are arranged. Discontinuous lines are arranged parallel to each other at predetermined intervals in the first direction. The recess 7 is formed by embossing the surface sheet 2 from the side facing the skin, and the embossing is such that the constituent fibers of both sheets 2 and 6 can be melted and pressed. Often, for example, thermal embossing and ultrasonic embossing can be mentioned. In the recess 7, both sheets 2 and 6 are integrated by fusion. The plurality of recesses 7 have the same plan-view shape and dimensions. The plan view shape of the recess 7 is not limited to a circular shape, and can be arbitrarily set, for example, an elliptical shape or a polygonal shape.

As shown in FIG. 2, the deodorant paper 4 is arranged between the front surface sheet 2 and the back surface sheet 3 in a folded state, and has a laminated structure of two or more layers. More specifically, the original length or width (width in the unfolded state) of the deodorant paper 4 in the horizontal direction is twice or more and three times or less the width of the napkin 1. As shown in FIG. 2, the sheet 4 which is wider than the napkin 1 has both side portions along the vertical direction X bent toward the non-skin facing surface side, and the bent side portions are bent in the vertical direction X. The edges along the napkin 1 are folded so as to overlap each other at the center of the lateral direction Y, and are arranged between the front surface sheet 2 and the back surface sheet 3, and the central portion of the lateral direction Y has three layers. The structure and other parts are a two-layer structure.

Although the present invention has been described above based on the embodiment, the present invention can be appropriately modified without being limited to the embodiment. For example, from the viewpoint of improving absorbency, leakage resistance, etc., a groove formed by integrally compacting the surface sheet 2, the second sheet 6, and the deodorant paper 4 is formed on the skin-facing surface of the napkin 1. May be good.
Further, the deodorant paper 4 is arranged so as to cover the surface (skin facing surface and non-skin facing surface) of the absorbent core (not shown) interposed between the front surface sheet 2 and the back surface sheet 3. You may have. As the absorbent core, those usually used in absorbent articles such as sanitary napkins can be used without particular limitation, and typically, hydrophilic fibers such as wood pulp and / or water-absorbent polymer particles are used. Consists of including.
The absorbent article to which the deodorant paper of the present invention is applied is not limited to the sanitary napkin as in the above embodiment, and is used for absorption of body fluids (urine, loose stool, menstrual blood, sweat, etc.) discharged from the human body. It broadly includes articles, including deployable disposable diapers, pants-type disposable diapers, sanitary shorts, and the like.
The following additional notes will be further disclosed with respect to the above-described embodiments of the present invention.

<1>
Contains fragrance, hydrophobic deodorant porous material and hydrophilic deodorant porous material,
The fragrance contains a hydrophobic compound having an IOB value of 0.55 or less and a hydrophilic compound having an IOB value of 0.8 or more.
The ratio D1 / D2 of the molar ratio D1 of the hydrophobic compound to the hydrophilic compound and the polyhydrophobic ratio D2 of the hydrophobic deodorant porous body to the hydrophilic deodorant porous body determined by the following formula (1). Deodorant paper with a value of 0.5 or more and 3 or less.
D2 = (S1 x W1) / (S2 x W2) ... (1)
S1: Specific surface area (m ² / g) of the hydrophobic deodorant porous body
W1: Mass ratio of the hydrophobic deodorant porous body in the deodorant paper to the mass of the base material of the deodorant paper S2: Specific surface area (m ² / g) of the hydrophilic deodorant porous body
W2: Mass ratio of the hydrophilic deodorant porous body in the deodorant paper to the mass of the base material of the deodorant paper

<2>
In the hydrophobic deodorant porous body, the ratio (%) of the dry weight (b) to the collected weight (a) determined by the following method is 70% or more.
The deodorant paper according to <1>, wherein the hydrophilic deodorant porous body has a ratio (%) of a dry weight (b) to a collected weight (a) of 50% or less.
[Method for determining the hydrophobicity of deodorant porous material]
Put 300 mL of deionized water and stirrer chips in a 500 mL beaker, add 1 g of deodorant porous material, stir for 1 minute at 200 rpm, collect the deodorant porous material floating on the water surface, and weigh it. Measured as weight (a). Further, the collected deodorant porous body is dried at 105 ° C. for 12 hours, and then the weight thereof is measured as the dry weight (b). Next, the ratio (%) of the dry weight (b) to the collected weight (a), that is, the collected weight (a) / the dry weight (b) × 100 (%) is obtained.
<3>
By the following method is measured, the hydrogen sulfide adsorption amount per unit area of the deodorizing sheet is at 0.035ppm / cm ² or more 2 ppm / cm ² or less, preferably 0.04 ppm / cm ² or more, more preferably 0 and a .05ppm / cm ² or more, preferably 1.5 ppm / cm ² or less, and preferably 0.04 ppm / cm ² or more 1.5 ppm / cm ² or less, more preferably 0.05 ppm / cm ² or more 1 The deodorant paper according to <1> or <2> above, which is 5.5 ppm / cm ² or less.
<Measurement method>
An Erlenmeyer flask with an internal volume of 500 mL containing the deodorant paper of 65 mm × 100 mm is filled with 4 ppm of hydrogen sulfide and sealed for 30 minutes. Then, the amount of residual hydrogen sulfide remaining in the Erlenmeyer flask with a stopper is measured using a hydrogen sulfide detector tube, and the amount of hydrogen sulfide adsorbed per unit area is determined by the following formula (2).
Hydrogen sulfide adsorption amount (ppm / cm ² ) = [4ppm-residual hydrogen sulfide amount (ppm)] / 65cm ² ... (2)
<4>
By the following method is measured, the hydrogen sulfide adsorption amount per unit area of the deodorizing sheet is 0.05 ppm / cm ² or more 1.5 ppm / cm ² or less, according to <1> or <2> vanishing Smell paper.
<Measurement method>
An Erlenmeyer flask with an internal volume of 500 mL containing the deodorant paper of 65 mm × 100 mm is filled with 4 ppm of hydrogen sulfide and sealed for 30 minutes. Then, the amount of residual hydrogen sulfide remaining in the Erlenmeyer flask with a stopper is measured using a hydrogen sulfide detector tube, and the amount of hydrogen sulfide adsorbed per unit area is determined by the following formula (2).
Hydrogen sulfide adsorption amount (ppm / cm ² ) = [4ppm-residual hydrogen sulfide amount (ppm)] / 65cm ² ... (2)
<5>
The total content of the hydrophobic deodorant porous body and the hydrophilic deodorant porous body is 0.5% by mass or more, preferably 0.8% by mass or more, based on the mass of the base material of the deodorizing paper. Yes, and less than 5% by mass, preferably 3% by mass or less, and 0.5% by mass or more and less than 5% by mass, preferably 0.8% by mass or more and 3% by mass or less. The deodorant paper according to any one of 4>. The deodorant paper according to claim 1 or 2.
<6>
The deodorant paper contains inorganic particles and contains
The specific surface area of the inorganic particles is 0.5 m ² / g or more and 50 m ² / g or less, preferably 1.5 m ² / g or more, and preferably 40 m ² / g or less, more preferably 30 m ^2. The above <1> to <5>, which are preferably 0.5 m ² / g or more and 40 m ² / g or less, more preferably 1.5 m ² / g or more and 30 m ² / g or less. The deodorant paper according to any one.
<7>
The deodorant paper contains inorganic particles and contains
The deodorant paper according to any one of <1> to <5>, wherein the specific surface area of the inorganic particles is 1.5 m ² / g or more and 30 m ² / g or less.
<8>
The deodorant paper according to <6> or <7>, wherein the inorganic particles are zeolite, calcium carbonate, calcium citrate, magnesium carbonate or magnesium hydroxide.
<9>
The content of the inorganic particles in the deodorant paper is 0.1% by mass or more, preferably 1% by mass or more, and preferably 10% by mass or less, based on the mass of the base material of the deodorizing paper. The deodorant paper according to any one of <6> to <8>, which is more preferably 5% by mass or less.

<10>
The deodorant paper according to any one of <1> to <9>, wherein the hydrophobic deodorant porous body is an organic substance.
<11>
The deodorant paper according to <10>, wherein the organic substance is at least one of a porous body of activated carbon and an amine compound.
<12>
The deodorant paper according to any one of <1> to <11>, wherein the hydrophilic deodorant porous body is an inorganic substance.
<13>
The deodorant paper according to <12>, wherein the inorganic substance is at least one selected from the group consisting of a composite of zirconium phosphate, aluminum / sodium nitrate silicate, silicon dioxide, and aluminum oxide.
<14>
The deodorant according to any one of <1> to <13>, wherein at least one of the hydrophobic deodorant porous body and the hydrophilic deodorant porous body is a metal-supported porous substance carrying a metal. paper.
<15>
The metal supported in the metal-supporting porous material is at least one selected from the group consisting of copper, silver, gold, lead, nickel, tin, zinc, iron and zirconium, according to <14>. Deodorant paper.
<16>
The hydrophobic deodorant porous body is one or more selected from the group consisting of a divinylbenzene-2-vinylpyridine-2-vinylpyridine silver copolymer and a zinc-activated activated carbon. The deodorant paper according to any one of 15>.
<17>
The hydrophilic deodorant porous body is a composite of silver zeolite, divinylbenzene-2-vinylpyridine-2-vinylpyridine silver copolymer, aluminum / silver / sodium silicate silicate, and silicon diate / zinc oxide / aluminum oxide. The deodorant paper according to any one of <1> to <16>, which is one or more selected from the group consisting of a product, silver zirconium phosphate, and a mixture of silver and zinc zeolite.

<18>
The deodorant paper according to any one of <1> to <17>, wherein the hydrophobicity ratio D2 is 0.6 or more and 2.0 or less.
<19>
The deodorant paper contains 1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethyl-cyclopenta-γ-2-benzopyran, benzyl as the hydrophobic compound. Benzoate, p-tert-butylcyclohexylacetate, limonene, ethyl 2-cyclohexylpropionate, 2-methyl-4- (2,2,3-trimethyl-3-cyclopentene-1-yl) -2-buten-1-ol , 1- (2-tert-butylcyclohexoxyoxy) -2-butanol, and any one of <1> to <18>, which contains at least one selected from the group consisting of nopill acetate. Deodorant paper.
<20>
The deodorant paper contains, as the hydrophilic compound, at least one selected from the group consisting of anisyl alcohol, linalool oxide, and α-methyl-3,4-methylene-dioxyhydrocinnamiacaldehyde. The deodorant paper according to any one of <1> to <19>.
<21>
The ratio D1 / D2 of the molar ratio D1 of the hydrophobic compound to the hydrophilic compound and the hydrophobic ratio D2 of the hydrophobic deodorant porous body to the hydrophilic deodorant porous body is 0.7 or more and 2.7. Any of the above <1> to <20>, which is less than or equal to, preferably 0.75 or more, preferably 2.5 or less, and preferably 0.75 or more and 2.5 or less. The deodorant paper according to 1.
<22>
The ratio D1 / D2 of the molar ratio D1 of the hydrophobic compound to the hydrophilic compound and the hydrophobic ratio D2 of the hydrophobic deodorant porous body to the hydrophilic deodorant porous body is 0.75 or more and 2.5. The deodorant paper according to any one of <1> to <20> described below.
<23>
The hydrophobic deodorant porous body has a specific surface area S1 of 100 m ² / g or more and 2000 m ² / g or less, preferably 150 m ² / g or more, and preferably 1500 m ² / g or less, more preferably. Is 700 m ² / g or less, preferably 150 m ² / g or more and 1500 m ² / g or less, more preferably 150 m ² / g or more and 700 m ² / g or less, any of the above <1> to <22>. The deodorant paper according to 1.
<24>
The deodorant paper according to any one of <1> to <22>, wherein the hydrophobic deodorant porous body has a specific surface area S1 of 150 m ² / g or more and 700 m ² / g or less.

<25>
The hydrophilic deodorant porous body has a specific surface area S2 of 80 m ² / g or more and 1000 m ² / g or less, preferably 120 m ² / g or more, and preferably 800 m ² / g or less. The deodorant paper according to any one of <1> to <24>, preferably 120 m ² / g or more and 800 m ² / g or less.
<26>
The deodorant paper according to any one of <1> to <24>, wherein the hydrophilic deodorant porous body has a specific surface area S2 of 120 m ² / g or more and 800 m ² / g or less.
<27>
The ratio W1 of the content of the hydrophobic deodorant porous body to the mass of the base material of the deodorant paper is 0.1% by mass or more, preferably 0.15% by mass or more, and 4% by mass or less, preferably. Is 3% by mass or less, preferably 0.1% by mass or more and 4% by mass or less, preferably 0.15% by mass or more and 3% by mass or less, according to any one of <1> to <26>. Deodorant paper.
<28>
The ratio W2 of the content of the hydrophilic deodorant porous body to the mass of the base material of the deodorant paper is 0.1% by mass or more, preferably 0.2% by mass or more, and 4% by mass or less, preferably. Is 3% by mass or less, and is 0.1% by mass or more and 4% by mass or less, preferably 0.2% by mass or more and 3% by mass or less, according to any one of <1> to <27>. Deodorant paper.
<29>
The deodorant paper according to any one of <1> to <28>, wherein the base material of the deodorant paper is mainly pulp fiber.
<30>
The deodorant paper according to any one of <1> to <29>, wherein the deodorant paper contains a wetting paper strength agent.
<31>
The content of the wet paper strength agent is 0.2% or more, preferably 0.4% or more, and 2% or less, preferably 1% or less, based on the mass of the base material of the deodorant paper. The deodorant paper according to <30>, wherein the deodorant paper is 0.2% or more and 2% or less, preferably 0.4% or more and 1% or less.
<32>
The deodorant paper according to <30> or <31>, wherein the wet paper strength agent is an epichlorohydrin resin.
<33>
The deodorant paper according to any one of <1> to <32>, wherein the deodorant paper contains a coagulant.
<34>
The content of the flocculant is 0.01% or more, preferably 0.02% or more, and 0.1% or less, preferably 0.05% or less, based on the mass of the base material of the deodorant paper. The deodorant paper according to <33> above, which is 0.01% or more and 0.1% or less, preferably 0.02% or more and 0.05% or less.
<35>
The deodorant paper according to <33> or <34>, wherein the flocculant is a polyacrylamide salt.
<36>
The deodorant paper according to any one of <1> to <35>, wherein the deodorant paper contains a dye.
<37>
The content of the dye is 0.01% or more, preferably 0.02% or more, and 0.1% or less, preferably 0.05% or less, based on the mass of the base material of the deodorant paper. The deodorant paper according to <36> above, which is 0.01% or more and 0.1% or less, preferably 0.02% or more and 0.05% or less.

<38>
The content of the perfume in the deodorant paper is 0.1 g / m ² or more, preferably 0.2 g / m ² or more, and 1 g / m ² or less, preferably 0.5 g in terms of basis weight. The deodorant paper according to any one of <1> to <37>, which is / m ² or less.
<39>
The basis weight of the base material constituting the deodorant paper is 10 g / m ² or more, preferably 15 g / m ² or more, and 50 g / m ² or less, preferably 40 g / m ² or less. > The deodorant paper according to any one of <38>.
<40>
An absorbent article comprising the deodorant paper according to any one of <1> to <39>.
<41>
The absorbent article according to <40>, wherein the absorbent article is a napkin.
<42>
The absorbent article comprises a front surface sheet and a back surface sheet that is farther from the wearer's skin than the front surface sheet.
The absorbent article according to <40> or <41>, wherein the deodorant paper is arranged between the front surface sheet and the back surface sheet.

Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to such Examples.

[Examples 1 to 12 and Comparative Examples 1 to 8]
Deodorant paper was produced by the production method having the steps (i) and (ii). Pulp Fiber Specifically, the papermaking net of a long-net paper machine is selected from pulp fiber (wood pulp), hydrophobic deodorant porous body A, hydrophobic deodorant porous body B, and hydrophilic deodorant porous body C. By pouring a suspension containing one or two kinds, inorganic particles, and water to be dehydrated, a wet paper containing a deodorant porous body and inorganic particles is obtained, and then the wet paper is obtained. The paper was heated and dried to obtain a paper containing a deodorant porous body and inorganic particles. A deodorant paper was produced by applying 0.021 mg / cm ^{2 of a} fragrance to the entire surface of the obtained paper. The obtained deodorant paper was stored in a closed container at room temperature for 1 month. Tables 5 and 6 show the basis weight and freeness of the pulp fibers used in each Example and Comparative Example. Further, the pulp fibers used in each Example and Comparative Example contain softwood bleached kraft pulp (NBKP) and hardwood bleached kraft pulp (LBKP), and their composition ratios (NBKP / LBKP) are both 9/1. Met.

The specific surface areas of the hydrophobic deodorant porous body A, the hydrophobic deodorant porous body B and the hydrophilic deodorant porous body C were measured by the above-mentioned method. The specific surface areas of each deodorant porous body are shown in Tables 5 and 6. Further, the product of the specific surface areas S1 and S2 of each deodorant porous body and the mass ratio W1 and W2 of the deodorant porous body to the mass of the base material of the deodorant paper is "S1 × W1" or "S2 × W2". Is shown in Tables 5 and 6. Further, for the deodorant papers of each Example and Comparative Example, Tables 5 and 6 show the hydrophobic ratio D2 of the hydrophobic deodorant porous body to the hydrophilic deodorant porous body, which is obtained by the above formula (1). ..
Tables 5 and 6 show the mass ratio of the inorganic particles to the mass of the base material of the deodorant paper.

-Deodorant porous body A (hydrophobic deodorant porous body): Manufactured by Kao Corporation, trade name "Polymer D" (metal-supported organic porous substance; main components are divinylbenzene and vinylpyridine; supported metal is silver; metal-supported Amount 0.3% by mass)
-Deodorant porous body B (hydrophobic deodorant porous body): manufactured by Futamura Chemical Co., Ltd., trade name "CW480B" (metal-supported organic porous substance; main component is carbon; supported metal is zinc; metal-supported amount 0.3 Mass% or less)
-Deodorant porous body C (hydrophilic deodorant porous body): Made by Mizusawa Industrial Chemicals Co., Ltd., trade name "Mizukanite HP" (metal-supported inorganic porous substance; main components are silicon dioxide, zinc oxide, aluminum oxide; supported metal Is zinc; metal support 30% by mass)
-Inorganic particles: manufactured by Mizusawa Industrial Chemicals Co., Ltd., trade name "TSC zeolite" (main component is silica / alumina, specific surface area 30 m ² / g or less)

In Examples 1 to 6 and Comparative Examples 1 to 4, the fragrance A containing the aroma component shown in Table 3 below was used. Further, in Examples 7 to 12 and Comparative Examples 5 to 8, the fragrance B containing the aroma component shown in Table 4 below was used.
The fragrance A contains a solvent or the like as a residue other than the aroma components shown in Table 3. The other compounds in Table 3 are compounds that are neither hydrophobic compounds nor hydrophilic compounds. The molar ratio of 1- (2-tert-butylcyclohexioxy) -2-butanol in Fragrance A is 0.033, the molar ratio of nopilacetate is 0.012, and the total molar ratio of hydrophobic compounds is It was 0.045. The molar ratio of linalool oxide is 0.015, the molar ratio of α-methyl-3,4-methylene-dioxyhydrocinnamiacaldehyde is 0.013, and the total molar ratio of hydrophilic compounds is 0. It was .028. The molar ratio D1 of the hydrophobic compound to the hydrophilic compound of the fragrance A (total molar ratio of hydrophobic compounds / total molar ratio of hydrophilic compounds) was 0.045 / 0.028 = 1.61.

The fragrance B contains a solvent or the like as a residue other than the aroma components shown in Table 4. The other compounds in Table 4 are compounds that are neither hydrophobic compounds nor hydrophilic compounds. The molar ratio of 1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethyl-cyclopenta-γ-2-benzopyrane in perfume B is 0.039, which is benzyl. The molar ratio of benzoate is 0.005, the molar ratio of p-tert-butylcyclohexylacetate is 0.005, the molar ratio of limonene is 0.007, and the molar ratio of ethyl 2-cyclohexylpropionate is 0. It is .005 and the molar ratio of 2-methyl-4- (2,2,3-trimethyl-3-cyclopenten-1-yl) -2-buten-1-ol is 0.005, which is a hydrophobic compound. The total molar ratio was 0.066. The molar ratio of anisyl alcohol was 0.036, and the total molar ratio of hydrophilic compounds was 0.036. The molar ratio D1 of the hydrophobic compound to the hydrophilic compound of the fragrance B (total molar ratio of hydrophobic compounds / total molar ratio of hydrophilic compounds) was 0.066 / 0.036 = 1.83.

For Examples 1 to 6 and Comparative Examples 1 to 4, the molar ratio D1 of the hydrophobic compound to the hydrophilic compound in the fragrance and the ratio D1 to the hydrophobic ratio D2 of the hydrophobic deodorant porous body to the hydrophilic deodorant porous body. Each value of / D2 is shown in Table 5 below. The values of Examples 7 to 12 and Comparative Examples 5 to 8 are shown in Table 6 below.
In addition, the scent modulation evaluation and the hydrogen sulfide adsorption amount were evaluated by the following methods, respectively. The results are shown in Table 5 below and Table 6 below.

<Aroma modulation evaluation method>
Paper produced by the same method as in the above-mentioned embodiment (paper without deodorant porous body added) is prepared as a standard product except that it does not contain the deodorant porous body, and the deodorant paper and the standard product have a quadrangular shape in a plan view. Dimensions: 65 mm x 100 mm) were cut out and used as measurement samples. The measurement sample was stored in a closed container at room temperature (temperature 25 ° C.) for 1 month.
Then, for the deodorant papers of each Example and Comparative Example, five monitors performed a sensory evaluation of the scent according to the above procedure. A person who can perform odor evaluation according to the 6-step odor intensity display method was appointed as the monitor under the guidance of an odor judge. The sensory evaluation of the scent was carried out in the following four stages based on the scent of the standard product that had undergone the above procedure (that is, left at room temperature for one month).
4 points: The scent is equivalent to the standard scent (highest evaluation).
3 points: Slightly different from the standard scent.
2 points: Slightly different from the standard scent.
1 point: Clearly different from the standard scent.

Then, the scores of the sensory evaluations (4 grades) of the 5 monitors were totaled, and the modulation of the fragrance of the fragrance was evaluated as follows based on the total scores.
14 to 16 points: A scent equivalent to the standard scent 11 to 13 points: Slightly different from the standard scent.
7 to 10 points: Slightly different from the standard scent.
4-6 points: Clearly different from the standard scent.

The amount of hydrogen sulfide adsorbed on the deodorant papers of each Example and Comparative Example was measured by the above-mentioned <Measuring method of hydrogen sulfide adsorption amount>.

The deodorant papers of Examples 1 to 12 had the same scent as the standard product, and the scent was not altered. From this, the deodorant papers of Examples 1 to 12 had a masking performance by the original scent of the fragrance, and the scent was fresh without modulation. On the other hand, the deodorant papers of Comparative Examples 1 to 10 had a scent modulation. In addition, the deodorant papers of Examples 1 to 5 and 7 to 11 had a high adsorption amount of hydrogen sulfide to the extent that hydrogen sulfide, which is one of the malodorous components, could be deodorized firmly by the deodorant porous body.

1 Sanitary napkin (absorbent article)
2 Front sheet 3 Back sheet 4 Deodorant paper 5 Peripheral seal part 6 Second sheet 7 Recess A Excretion part area B Front area C Rear area X Vertical direction Y Horizontal direction

Claims (7)

Contains fragrance, hydrophobic deodorant porous material and hydrophilic deodorant porous material,
The fragrance contains a hydrophobic compound having an IOB value of 0.55 or less and a hydrophilic compound having an IOB value of 0.8 or more.
The ratio D1 / D2 of the molar ratio D1 of the hydrophobic compound to the hydrophilic compound and the polyhydrophobic ratio D2 of the hydrophobic deodorant porous body to the hydrophilic deodorant porous body determined by the following formula (1). Deodorant paper with a value of 0.5 or more and 3 or less.
D2 = (S1 x W1) / (S2 x W2) ... (1)
S1: Specific surface area (m ² / g) of the hydrophobic deodorant porous body
W1: Mass ratio of the hydrophobic deodorant porous body in the deodorant paper to the mass of the base material of the deodorant paper S2: Specific surface area (m ² / g) of the hydrophilic deodorant porous body
W2: Mass ratio of the hydrophilic deodorant porous body in the deodorant paper to the mass of the base material of the deodorant paper The deodorant paper according to claim 1, wherein the amount of hydrogen sulfide adsorbed per unit area of the deodorant paper measured by the following method is 0.035 ppm / cm ² or more.
<Measurement method>
An Erlenmeyer flask with an internal volume of 500 mL containing the deodorant paper of 65 mm × 100 mm is filled with 4 ppm of hydrogen sulfide and sealed for 30 minutes. Then, the amount of residual hydrogen sulfide remaining in the Erlenmeyer flask with a stopper is measured using a hydrogen sulfide detector tube, and the amount of hydrogen sulfide adsorbed per unit area is determined by the following formula (2).
Hydrogen sulfide adsorption amount (ppm / cm ² ) = [4ppm-residual hydrogen sulfide amount (ppm)] / 65cm ² ... (2) The deodorant according to claim 1 or 2, wherein the total content of the hydrophobic deodorant porous body and the hydrophilic deodorant porous body is less than 5% by mass with respect to the mass of the base material of the deodorant paper. paper. The deodorant paper according to any one of claims 1 to 3, which contains inorganic particles having a specific surface area of 50 m ² / g or less. The deodorant paper according to any one of claims 1 to 4, wherein the hydrophobic deodorant porous body is an organic substance. The deodorant paper according to any one of claims 1 to 5, wherein the hydrophilic deodorant porous body is an inorganic substance. The deodorant paper according to any one of claims 1 to 6, wherein the hydrophobic ratio D2 is 0.6 or more and 2.0 or less.