Aromatic resin composition

Abstract

Provide is an aromatic resin having sufficient diffusion of an aroma and continuity of an aromatic effect.　The aromatic resin is: characterized by being formed by blending a resin base material containing at least one selected from a polyvinyl acetal resin, a polyester resin, a polystyrene-based resin, and a polyolefin resin with an aromatic substance and a fixing agent having a main component in an amount not less than 250 molar mass; and characterized in that the polyvinyl acetal resin contains at least one selected from the group consisting of a polyvinyl acetoacetal and a polyvinyl butyral, the polyester resin contains at least one selected from the group consisting of a polylactic acid, a polybutylene succinate, and a polybutylene adipate terephthalate, the polystyrene-based resin contains at least one selected from the group consisting of a polystyrene resin, an acrylonitrile butadiene styrene resin, and an acrylonitrile styrene resin, and the polyolefin resin contains at least one selected from the group consisting of a polyethylene, a polypropylene, and a copolymer polyolefin.

Description

Technical Field

[0001] The present invention relates to a fragrant resin composition and further relates to a deodorant, a mimic bait, and an odor modifier using the same.

Background Art

[0002] Conventionally, various techniques for blending a resin and a fragrance have been studied, but there have been problems such as insufficient continuity of the effect of the fragrance and suppression of the release of the fragrance. In addition, the mechanical properties of the base resin may be impaired (for example, see Patent Documents 1 to 5).

[0003] Also, conventionally, various forms of mimic baits for fishing and the like have been provided, and as the material, plastics mainly composed of polyvinyl chloride (PVC)-based elastomers have been mainstream. This plastic is rich in elasticity and binding properties, and has good visibility for fish and the like, and has been widely used as a mimic bait. In recent years, however, due to high safety and low environmental load, mimic baits using biodegradable resins have been proposed (for example, see Patent Documents 6 and Patent Documents 7). In a mimic bait with good biodegradability, generally, the needle tearing strength is not sufficient, and when a needle is attached to the mimic bait and thrown, the mimic bait may be torn by the tensile stress between the needle and the mimic bait, and thus the mimic bait may come off. Therefore, mimic baits with improved needle tearing strength using biodegradable materials have been studied (for example, see Patent Documents 8 and Patent Documents 9).

[0004] However, even for biodegradable resins, it takes time for natural decomposition and they will remain in the natural environment for a long time. Therefore, it is difficult to solve problems regarding environmental load such as marine pollution only by using biodegradable resins. In addition, with regard to mimic baits, the issue is how well they function with respect to the five senses of fish and the like, and there has been a situation where the effects on smell and taste have not been sufficiently studied.

Prior Art Documents

Patent Documents

[0005] [Patent Document 1] Japanese Patent Publication No. 2015-44771 [Patent Document 2] Japanese Patent Publication No. 2022-146037 [Patent Document 3] Japanese Patent Publication No. 2003-94569 [Patent Document 4] Special Publication 2013-531746 [Patent Document 5] Japanese Patent Publication No. 2003-201374 [Patent Document 6] Japanese Patent Publication No. 2005-143413 [Patent Document 7] Japanese Patent Publication No. 2003-134971 [Patent Document 8] Japanese Patent Publication No. 2004-201626 [Patent Document 9] Japanese Patent Publication No. 2003-009721 [Overview of the project] [Problems that the invention aims to solve]

[0006] The present invention solves the above problems and provides a fragrance resin with sufficient duration of fragrance effect and fragrance release. composition The objective is to provide a fragrance resin that is excellent in flexibility and elasticity, does not tear easily like polyvinyl chloride lures, and is applicable to lures that can effectively function on the five senses of fish and the like, and is also applicable as an odor modifier or deodorant that can be suitably used in cat litter and the like. composition The purpose is to provide. [Means for solving the problem]

[0007] To achieve the above objective, the fragrance resin composition of the present invention comprises a resin base material containing at least one selected from polyvinyl acetal resin, polyester resin, polystyrene resin, and polyolefin resin, a fragrance substance, and a fixative with a molar mass of 250 or more of the main component. The polyvinyl acetal resin comprises at least one selected from the group consisting of polyvinyl acetal and polyvinyl butyral. The polyester resin comprises at least one selected from the group consisting of polylactic acid, polybutylene succinate, and polybutylene adipate terephthalate. The polystyrene resin comprises at least one selected from the group consisting of polystyrene resin, acrylonitrile butadiene styrene resin, and acrylonitrile styrene resin. The polyolefin resin comprises at least one selected from the group consisting of polyethylene, polypropylene, and copolymerized polyolefins. The aforementioned aromatic substance is ,collection At least one selected from fish repellents and fragrances by seed can be, The aforementioned retainer is Monobasic acid or polybasic acid, At least one alcohol selected from the group consisting of glycols, methanol, ethanol, propanol, and glycol ethers, It is characterized by being an ester-based plasticizer composed of the following:

[0009] In the fragrance resin of the present invention, the retainer is succinic acid or adipic acid, At least one alcohol selected from the group consisting of benzyl alcohol and glycol ethers, It is preferable that the plasticizer is an aliphatic polybasic acid ester composed of the following.

[0010] In the aromatic resin of the present invention, it is preferable that the glycol ether is at least one selected from diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, and diethylene glycol monobutyl ether.

[0011] In the fragrant resin of the present invention, the retention agent is contained in the range of 1 part by weight or more and 60 parts by weight or less with respect to 100 parts by weight of the resin base material. In the fragrant resin of the present invention, it is preferable that the fragrant substance is contained in the range of 0.000001 part by weight or more and 50 parts by weight or less with respect to 100 parts by weight of the resin base material.

[0012] In the fragrant resin of the present invention, the fragrant substance is a deodorant component and is preferably used as a deodorant.

[0013] In the fragrant resin of the present invention, the fragrant substance is a fish aggregating agent and is preferably used as a pseudo-bait.

[0014] In the fragrant resin of the present invention, the fragrant substance is a fragrance and is preferably used as an odor modifier.

Advantages of the Invention

[0015] According to the present invention, it is possible to provide a fragrant resin in which the effects of a fragrance including an odor modulation effect and a deodorizing effect are sufficient in terms of continuity and fragrance release.

Brief Description of the Drawings

[0016] [Figure 1] Figure 1 is a diagram showing the odor evaluation results of cat litter indoors and outdoors. [Figure 2] Figure 2 is a diagram showing the odor evaluation results of cat litter put into a trash can. [Figure 3] Figure 3 is a diagram showing the evaluation results of the persistence of the deodorizing effect. [[ID=?]] [Figure 4] Figure 4 is a diagram showing the odor evaluation results of disposable diapers put into a trash can.

Embodiments for Carrying Out the Invention

[0017] The following are examples of embodiments and configurations of the present invention, but the present invention is not limited to these, and is included in the present invention as long as it is in line with the intent of the claims, means of solving the problem, effects of the invention, etc.

[0018] The present invention provides an aromatic resin obtained by blending an aromatic substance, preferably containing a low-boiling point and highly volatile odorant, with a specific resin substrate together with a specific fixative. The specific resin substrate is a resin substrate comprising at least one selected from polyvinyl acetal resin, polyester resin, polystyrene resin, and polyolefin resin, wherein the polyvinyl acetal resin comprises at least one selected from the group consisting of polyvinyl acetal and polyvinyl butyral, the polyester resin comprises at least one selected from the group consisting of polylactic acid, polybutylene succinate, and polybutylene adipate terephthalate, the polystyrene resin comprises at least one selected from the group consisting of polystyrene resin, acrylonitrile butadiene styrene resin, and acrylonitrile styrene resin, and the polyolefin resin comprises at least one selected from the group consisting of polyethylene, polypropylene, and copolymerized polyolefin. The specific fixative is a fixative whose main component has a molar mass of 250 or more. More preferably, an aromatic substance containing a low-boiling, highly volatile odorant may be blended with the polyvinyl acetal resin and a specific fixative, and then further mixed with the polyester resin, polystyrene resin, and polyolefin resin depending on the application.

[0019] Fragrance components (including pleasant and unpleasant smells) are used in various fields such as deodorizers, foods, aromatherapy, artificial bait, and scents that attract living organisms (e.g., fish attractants). However, many fragrance components are highly volatile and have low boiling points, making them difficult to add to resins that require high processing temperatures. In particular, it is considered difficult to add fragrance substances, such as fragrances diluted with alcohol or water, to resins. In this invention, fragrance substances such as "Katsuo Extract T" (manufactured by Yaizu Suisan Kagaku Kogyo Co., Ltd.), "Tea Tree" (distributed by InScent Co., Ltd. (country of origin: Australia), 100% natural tea tree essential oil), and "DeoMagic" (registered trademark) (manufactured by Shikibo Co., Ltd.) can be suitably used depending on the application. Fragrance components are oil-based and become highly volatile when heated. Furthermore, they are composed of multiple components, each with a different boiling point, making it difficult to maintain the balance (mixing ratio) of components as the temperature rises. Therefore, by incorporating a retainer consisting of plasticizers and other substances with a molar mass of 250 or more, the volatilization of each component is suppressed.

[0020] When adding aromatic substances to resin, it is considered possible to add them at the lowest possible temperature, along with incorporating a fixative, without disrupting the balance (mixing ratio) of the components. On the other hand, the undiluted solutions of each component (odor component) of aromatic substances are so strongly scented that considerable dilution is necessary. Furthermore, since odors are perceived through volatilization, conventionally, it has been desirable for the fixative itself to be volatile. For this reason, general deodorizers and air fresheners are diluted using alcohol or water, and these diluted components also function as fixatives. In other words, if the odor components, diluted with water or alcohol and finely dispersed, can be incorporated into the resin, then when the water or alcohol volatilizes to the outside of the resin, this resin can function as a deodorizer or air freshener. However, in this invention, we focused on suppressing the volatilization of aromatic components when kneading the resin at high temperatures above the volatilization temperature of the aromatic components. Therefore, the invention is characterized by incorporating a plasticizer or the like with a molar mass of 250 or more of the main component as a fixative, which can be used even at high kneading temperatures. Furthermore, by adding the aromatic resin, obtained by blending an aromatic substance and the aforementioned specific fixative with a resin base material, as an additive to another resin, it becomes possible to incorporate the fragrance into the other resin.

[0021] The retainer in the fragrance resin of the present invention can preferably be an ester-based plasticizer composed of a monobasic or polybasic acid and at least one alcohol selected from the group consisting of glycol, methanol, ethanol, propanol, and glycol ether, and more preferably an aliphatic polybasic acid ester-based plasticizer composed of succinic acid or adipic acid and at least one alcohol selected from the group consisting of benzyl alcohol and glycol ether. The glycol ether is preferably at least one selected from diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, and diethylene glycol monobutyl ether.

[0022] [Water content of resin substrate] Odors can be detected in very small amounts, and most odors exist in the air diluted to levels of 0.001 ppt to 1 ppt. Therefore, fragrances supplied to the market are diluted with water or alcohol. Oily odor components are basically insoluble in water, but are used diluted with water or other solvents such as alcohol. Water-soluble fragrances include those obtained by dissolving oil-soluble fragrance concentrates in alcohol and removing insoluble parts, or those in which water-soluble aromatic substances are dissolved in water (aromatic distilled water). Handling concentrated fragrance concentrates and adding them to resins is very cost-ineffective due to high volatility, and there is a high possibility of altering the composition of the fragrance substance. For this reason, plasticizers are added to fragrances as retainers to suppress volatility, but when adding them to resins, it is necessary to consider the impact on the mechanical properties of the resin and the bleed-out of the plasticizer, so there are conditions for addition, and the resins to which they can be added are limited. Furthermore, since concentrated fragrance concentrates can be expensive depending on the type, they are diluted to the required concentration according to the application and supplied to the market. For example, "DeoMagic" (registered trademark) for dairy and agricultural use (manufactured by Shikibo Co., Ltd.), which absorbs unpleasant odors and transforms them into pleasant scents, is recommended to be used at a dilution ratio of 20 to 200 times. Thus, in the market, odor substances are diluted with plasticizers as retainers in the case of the undiluted solution, and in most cases with water or alcohol in the case of solutions other than the undiluted solution, so the water content of the resin substrate must be taken into consideration. Therefore, in the present invention, a resin substrate containing at least one selected from polyvinyl acetal resin, polyester resin, polystyrene resin, and polyolefin resin is used.

[0023] [Formulation of resin base material and fragrance substance] Aromatic substances (fragrances, etc.) are often composed of multiple individual fragrances, modifiers, and auxiliary agents (blended fragrances), and since each has a different boiling point, heating can change the composition of the fragrance components, altering the fragrance itself or the functionality (effect) of the fragrance. As a result, the original scent may differ from the scent after it is added to the resin, or the scent intensity may weaken. Furthermore, when diluted aromatic substances vaporize with water or alcohol, a small amount of the fragrance components are also vaporized along with them. Therefore, when the boiling point of water or alcohol is reached, the volatilization of the fragrance components is activated. In other words, even if the boiling point of the fragrance substance is higher than, for example, the boiling point of water, the fragrance substance dissolved in water will also vaporize. At atmospheric pressure, the boiling point of ethyl alcohol is approximately 78.4°C, and the boiling point of water is 100°C. Therefore, when manufacturing aromatic resins by blending aromatic substances with resins, it is desirable to blend them at 70°C or below from the viewpoint of suppressing the volatilization of fragrance substances, and handling at lower temperatures is preferable. If the aromatic substance is a stock solution of odorants that does not contain alcohol or water, the aromatic resin can be manufactured by blending the aromatic substance with the resin at a temperature below the lowest boiling point of each component of the odorant. For this purpose, it is preferable that the processing temperature of the resin substrate be below the lowest boiling point. If each component of the odorant is oil-based, it can be easily added to the resin. When using an aromatic substance that is diluted with water or alcohol, for example, if the lowest boiling point is 100°C or higher, it can be blended without significantly affecting the odorant if the processing temperature is in the range of room temperature to about 50°C, which is sufficiently lower than the boiling point of ethyl alcohol. In the aromatic resin of the present invention, it is preferable that the aromatic substance is contained in an amount of 0.000001 parts by weight or more and 50 parts by weight or less per 100 parts by weight of the resin substrate.

[0024] [Hydrophilic / Hydrophobic properties of resin substrates] The surface condition of an aromatic resin containing aromatic substances greatly influences its ability to release fragrance and modulate odors. When blending (mixing) a resin base with aromatic substances, if the resin surface is hydrophilic, water-soluble substances are easily added to the resin, while oil-soluble substances are not. If the resin surface is hydrophobic, water-soluble substances are not easily added to the resin, while oil-soluble substances are easily added.

[0025] When the resulting aromatic resin is placed in the air, if the resin surface is hydrophilic, water-soluble substances bleed and volatilize easily from the resin, while oil-soluble substances do not bleed and volatilize easily. If the resin surface is hydrophobic, oil-soluble substances bleed and volatilize easily from the resin. If the resin surface is hydrophobic, it is difficult to add water-soluble substances, but even if a small amount is added, it does not bleed or volatilize easily from the resin.

[0026] When the resulting aromatic resin is placed in water, if the resin surface is hydrophilic, water-soluble substances bleed and volatilize easily from the resin, while oil-soluble substances do not bleed and volatilize easily. If the resin surface is hydrophobic, oil-soluble substances bleed and volatilize easily from the resin. If the resin surface is hydrophobic, it is difficult to add water-soluble substances, but even if a small amount is added, it does not bleed or volatilize easily from the resin.

[0027] When incorporating water-soluble odor substances or extracts, it is preferable that the resin surface be hydrophilic. For example, an aromatic resin using a water-soluble fish attractant as an aromatic substance can be suitably used as a lure. In water, the lure allows the fish attractant to bleed, attracting fish, and in the air, it stops the bleeding of the odorous fish attractant, preventing it from adhering to the body, such as hands, or clothing. Furthermore, as the odor substances contained in the fish attractant volatilize, the strength of the scent emitted by the lure can be used to notify the user of the remaining amount of fish attractant.

[0028] Based on the above considerations of the water content of the resin substrate, the temperature during compounding of the resin substrate and the aromatic substance, and the hydrophilicity / hydrophobicity of the resin, the following conditions apply to a resin that can maintain the quality of water-soluble odor substances or water-soluble extracts containing odor substances when used as aromatic substances, and that can be operated in accordance with the application. • It must be a resin with high water content. The resin must have a low Tg (temperature at which it can be processed) that is lower than the boiling point of water, and even lower than the boiling point of ethanol, allowing for processing at room temperature. • The resin must have hydrophilic groups that have a high affinity for water.

[0029] Examples of resins that satisfy the above conditions include polyvinyl butyral (PVB) resin used as an interlayer in automobile windshields, etc., and PVB resin film left over as scraps, which are resin substrates containing at least one selected from polyvinyl acetal resin, polyester resin, polystyrene resin, and polyolefin resin, to which a plasticizer is blended. Although a plasticizer has already been added to the interlayer, etc., if the molar mass of the main component of the plasticizer is 250 or more, it acts as a retainer in the present invention. Therefore, it is possible to effectively reuse the interlayer, etc. without separating the resin components. Triethylene glycol di-2-ethylhexanoate (G-260, manufactured by Sekisui Chemical Co., Ltd.) can be suitably used as the plasticizer (retainer).

[0030] Generally, deodorizers work by spraying or vaporizing fine particles of fragrance components (including modifiers) into the air. This method can be greatly affected by actual airflow, temperature, and humidity. As an extreme example, spraying a deodorizer in strong winds will result in the fragrance components being blown away instantly, rendering it ineffective. Furthermore, using spray cans at temperatures above 40°C is considered dangerous because the expansion of flammable gases increases the risk of the can breaking. Similarly, using air fresheners at temperatures above 40°C often leads to rapid vaporization and a quick loss of effectiveness. In summer, the temperature inside outdoor trash cans is around 25°C even at night, and can exceed 40°C during the day. Given these conditions, current deodorizing methods have proven difficult.

[0031] According to the present invention, it is possible to add aromatic substances (odors) diluted with alcohol, glycol, polyalkylene glycol, or water, as well as water-soluble extracts containing a large amount of odor substances, to a resin, while maintaining the quality before addition, and controlling the volatilization and bleeding of aromatic substances (odors) and extracts to the outside of the resin in air or water. The aromatic resin of the present invention can be applied to odor-related products such as deodorizing / fragrance products, artificial bait / fish attractants, pet waste treatment products such as cat litter, air conditioning filters, nonwoven fabrics, cotton, sanitary products, textile products such as underwear / socks / gloves, odor-proof masks, furniture such as shoe boxes and shoe racks, car accessories such as seat covers and mats, aromatherapy products, film products such as garbage bags and body bags, containers such as trash cans and food waste containers, toilet products, food samples, artificial flowers, incense sticks and fragrances, curtains and rugs, laundry baskets, waste containers, and medical waste containers.

[0032] The aromatic resin of the present invention is characterized by its ability to maintain its effect for a long period of time without being significantly affected by the surrounding environment. For example, cat urine can produce a pungent ammonia odor as early as two days later, but when the deodorant developed according to the present invention is added to cat litter, the odor can be suppressed for more than a week by adjusting the concentration of the deodorant. This deodorizing technology can be applied to sanitary products such as disposable diapers (pet diapers, infant / toddler / adult adult incontinence diapers, etc.), sheet products (incontinence sheets, toilet floor sheets, human / pet urine sheets, etc.), sanitary products (napkins, etc.), nursing care products such as sheets and pads, and urine pads. Furthermore, it can be applied to deodorants for portable toilets such as camping toilets, portable toilets and emergency toilets, as well as to waste deodorants such as waste deodorants for disaster areas and waste deodorants for vomit treatment.

[0033] The aromatic resin of the present invention may also contain, as an optional component, general additives such as inorganic fillers, organic fillers, pigments, dyes, radical initiators, flame retardants, antioxidants, antimicrobial agents, bactericidal agents, and disinfectants, to the extent that they do not impair the effects of the present invention. Examples of inorganic fillers include talc and calcium carbonate. Superabsorbent polymers (SAP) may also be added.

[0034] The aromatic resin of the present invention can be manufactured, for example, by kneading each material in a kneader and then using an extrusion molding machine. If necessary, the resulting aromatic resin may be pelletized or processed into sheets or films. [Examples]

[0035] Next, the present invention will be specifically described with reference to examples and comparative examples, but these are not intended to limit the present invention in any way.

[0036] The resin substrates, fixatives, and fragrance substances used in the examples and comparative examples are as follows: PBS Polybutylene succinate FZ91 (manufactured by Mitsubishi Chemical Corporation) Polyvinyl butyral Esrec B·BH-A (molecular weight 11.5 × 10) 4 (Manufactured by Sekisui Chemical Co., Ltd.) Interlayer scraps and interlayers: Interlayers used in automotive and architectural glass (in-process waste, manufactured by Sekisui Chemical Co., Ltd.) DF-101 (fixative, plasticizer) Mixed dibasic acid ester (benzylmethyldiglycol adipate) "DAIFATTY-101" (manufactured by Daihachi Chemical Industry Co., Ltd., molar mass 338) BXA-N (fixative, plasticizer) Bis(2-(2-butoxyethoxy)ethyl) adipate "BXA-N" (manufactured by Daihachi Chemical Industry Co., Ltd., molar mass 435) G-260 (fixative, plasticizer) Triethylene glycol-2-ethylhexanoate "G-260" (manufactured by Sekisui Chemical Co., Ltd., molar mass 402) LC525 Polyethylene Resin (LDPE) "Novatec LD" LC525 (Manufactured by Nippon Polyethylene Co., Ltd.) EEA ethylene ethyl acrylate copolymer "A6200" (manufactured by Nippon Polyethylene Co., Ltd.) Sodium polyacrylate (sodium salt of acrylic acid polymer, a synthetic polymer of superabsorbent polymer, used in cat litter)

[0037] The interlayer scraps and interlayer were made of polyvinyl acetal resin containing a plasticizer (G-260), formulated in a weight ratio of polyvinyl acetal resin:plasticizer = 3:1. The pseudo-interlayer had a molecular weight of 11.5 × 10⁻⁶. 4 A mixture of PVB ("Eslec B·BH-A", manufactured by Sekisui Chemical Co., Ltd.) and a plasticizer (G-260, manufactured by Sekisui Chemical Co., Ltd.) was used, with a weight ratio of PVB:plasticizer = 3:1.

[0038] The water content of the interlayer film scraps was evaluated. A batch-type kneader (Laboplastmill® 10S100, manufactured by Toyo Seiki Seisakusho Co., Ltd.) was used, and distilled water (purified) was added at a blade rotation of 12.5 rpm. The interlayer film scraps used as the base material were pre-dried at 80°C for 2 hours before evaluation. The results were as follows. Base material weight 90g Added water weight 18g Final weight 92.2g Water content: 2.2g (per 90g of base material) Processing temperature: approx. 60℃ Moisture content: Approximately 2.4g of water per 100g of base material.

[0039] The aromatic substances used in the examples and comparative examples are as follows: Regarding "DeoMagic" (registered trademark), the agricultural and dairy farming-use "DeoMagic" (DM, manufactured by Cainz Co., Ltd., containing water, ethyl alcohol, and fragrance) was used in the following manner. "DM0" - Use DM as is. "DM1" is DM that has been dried and reduced in weight to approximately 50 wt%. "Katsuo Extract T" Manufactured by Yaizu Suisan Kagaku Kogyo Co., Ltd. Moisture content 35% or less, salt content 13.5±2.5% (no drying loss or dilution is performed)

[0040] [Evaluation of aromatic resins] [Sample mixing] The process was carried out using a batch-type kneader (Laboplastmill® 10S100, manufactured by Toyo Seiki Seisakusho Co., Ltd.). Unless otherwise specified, commercially available materials were used in their original form. Interlayers (including pseudo-interlayers) were used after being formed into pellets of a few millimeters square. Before use, the machine was left for at least one hour after powering on and setting the processing temperature to eliminate temperature variations between the processing tank (mixing tank) and the blades.

[0041] [Sample molding] (Sheet molding) Using a desktop press (small press G-12 model, manufactured by Techno Supply Co., Ltd.), the resin composition obtained by mixing was heated and pressed at a temperature (°C) specified for each sample. The sheet was then immediately cooled by sandwiching it between metal plates (water-cooled heat sinks) through which tap water was passed, resulting in a sheet measuring 60mm x 60mm x 1mm thick. Hereafter, only the desktop press temperature setting is described for sheet forming.

[0042] [Odor assessment] The method for detecting odors varies depending on the application to which the odor is applied.

[0043] A. Attractants (solutions containing scents and flavorings used to attract fish in artificial bait) The following is an index for evaluating the results of adding a fish attractant (bonito extract T) to resin. Points were added for each item to determine the evaluation. As a general rule, the evaluation should be performed when the entire sample is at room temperature, the same as the surrounding environment. <Rating A1. Has an odor> (1 point) The obtained sheet-like samples (60mm long x 60mm wide x 1mm thick) were placed in Unipack D-4 (manufactured by Seisan Nipponsha Co., Ltd.), and after 24 hours, the zipper was opened. The presence or absence of odor when the nose was brought within a few centimeters of the opened bag was used for evaluation. <Rating A2. The scent of Rating A1 is the same as the scent of bonito extract T> (Point 1) <Rating A3. Smells more like Rating A1> (Point 1) The aforementioned sheet-like sample was placed in a Unipack D-4 (manufactured by Seisan Nipponsha Co., Ltd.), and after 24 hours, the zipper was opened. The evaluation was then conducted by checking whether the odor of evaluation A1 could be detected when the nose was held more than 10 centimeters away from the opened bag, or by holding the bag within a few centimeters of the nose without opening the zipper. <Evaluation A4. After being placed in water, the scent of bonito extract T can be smelled from the water surface.> (Point 1) The aforementioned sheet-like sample was cut into four pieces of equal size and placed in a container with 100cc of tap water. The smell of the water surface was then checked after approximately 24 hours. <Rating A5. The water tastes like bonito extract T after being added to it.> (Point 1) After immersing the aforementioned sheet-like sample in water, the taste of the water was checked approximately 24 hours later (this was done simultaneously with evaluation A4).

[0044] (Evaluation results) S 5 points A 4 points B 2-3 points C 1 point or less

[0045] B. Deodorizer (Agricultural and dairy farming use "DeoMagic": Modulated deodorizer) The following is an index for evaluating the results of adding a deodorant using a modulation method to a resin, with points added for each item to determine the evaluation. The evaluation was conducted in principle when the entire sheet-like sample was at room temperature, the same as the surrounding environment. <Rating B1. Has an odor (not a bad smell)> (Point 1) The aforementioned sheet-like samples were placed in Unipack D-4 (manufactured by Seisan Nipponsha Co., Ltd.), and after 24 hours, the zipper was opened. The presence or absence of odor when the nose was brought within a few centimeters of the opened bag was then evaluated. <Evaluation B2. The scent of evaluation B1 is the same as the scent of the added fragrance component> (Point 1) <Rating B3. Stronger smell than Rating B1> (Point 1) The aforementioned sheet-like sample was placed in a Unipack D-4 (manufactured by Seisan Nipponsha Co., Ltd.), and after 24 hours, the zipper was opened. The evaluation was then conducted by checking whether the odor of evaluation B1 could be detected when the nose was held more than 10 centimeters away from the opened bag, or by holding the bag within a few centimeters of the nose without opening the zipper. <Evaluation B4. The bad odor is gone and no other bad odor is present, but it is not the intended scent that was altered.> (Point 3) The sheet-like sample described above was evaluated for its deodorizing properties for feces and urine. When approximately 20g of the sheet-like sample, cut into pieces of a few millimeters square, was placed on aluminum foil in an actual toilet, the fecal odor was eliminated. The toilet size was one tatami mat x 2.5m high. After using the toilet, the user left the toilet, waited about 30 seconds, and then re-entered the toilet, at which point the fecal odor was gone. <Evaluation B5. The desired scent is altered (the bad odor disappears, and no other bad odors appear)> (Point 4) In evaluation B4, the smell upon re-entering the toilet is either the intended altered scent or the scent of an air freshener.

[0046] (Evaluation results) S 6 points or more A 3-5 points B 2 points C 1 point or less

[0047] [Example 1] The pseudo-interfilm was dried in a constant temperature bath beforehand, then 80g was weighed and placed into a lab plast mill set to a temperature of 50°C. 16g of bonito extract T was then added, and the mixture was kneaded until the resin temperature and torque value stabilized. The tabletop press machine was set to a temperature of 70°C during sheet molding to obtain the sample for this example.

[0048] [Example 2] The sample for this example was obtained in the same manner as in Example 1, except that the pseudo-interlayer was replaced with an interlayer scrap and the Laboplastmill setting temperature was set to 30°C.

[0049] [Comparative Example 1] The pseudo-interlayer was changed to a PVB resin (BH-A) that does not contain a retainer (plasticizer), the amount of bonito extract T was set to 10 (by weight) per 100 parts of interlayer scraps, and the laboplastmill temperature was set to 80°C. Mixing was carried out in the same manner as in Example 1, but the resin and bonito extract T could not be mixed and became sticky.

[0050] [Comparative Example 2] The pseudo-interlayer was changed to polyethylene resin (LC525) without retainers (plasticizers), the amount of bonito extract T was set to 10 (by weight) per 100 units of interlayer scraps, and the laboplastmill temperature was set to 140°C. Mixing was carried out in the same manner as in Example 1, but the volatilization of bonito extract T was so severe that it could not be mixed with the resin.

[0051] [Example 3] The sample for this example was obtained in the same manner as in Example 1, except that the pseudo-interlayer was replaced with interlayer scraps, an additional retainer (G-260) was added at a rate of 20 (by weight) per 100 units of interlayer scraps, and bonito extract T was added at a rate of 10 (by weight) per 100 units of interlayer scraps.

[0052] Table 1 shows the results of odor evaluation A performed on the samples obtained in Examples 1 to 3. It was confirmed that water-soluble bonito extract T, which contains a large amount of odor substances, can be added to pseudo-interlayers or interlayer edges containing a retainer with a molar mass of 250 or more of the main component, and that the resulting resin can function as artificial bait.

[0053] [Table 1]

[0054] [Example 4] It was confirmed that unconcentrated DM0, a modulated deodorant, could be added to interlayer film scraps (polyvinyl acetal resin containing the plasticizer (G-260)) at a processing temperature setting of 30°C in the Laboplastmill. Since unconcentrated DM0 contains a large amount of alcohol and water, it was confirmed whether there was any change in odor or loss of deodorant properties due to volatilization when added to the resin. In this example, the pseudo-interlayer film was changed to interlayer film scraps, DM0 was used as the aromatic substance, the amount of DM0 was set to 20 (by weight) per 100 units of interlayer film scraps, and the Laboplastmill temperature was set to 30°C. The sample for this example was obtained in the same manner as in Example 1.

[0055] [Example 5] It was confirmed that 1 / 2 concentrated DM1, a modulated deodorant, could be added to interlayer film scraps (polyvinyl acetal resin containing the plasticizer (G-260)) at a processing temperature setting of 30°C in the Laboplastmill. Since DM1 is 1 / 2 concentrated, the amount of alcohol component that can act as a solvent in the interlayer film scraps is reduced, making it difficult to mix with the interlayer film scraps. Therefore, it was confirmed that there was no change in odor or loss of deodorizing properties when adding it to the resin. In this example, the pseudo-interlayer film was changed to interlayer film scraps, DM1 was used as the aromatic substance, and the amount of DM1 was set to 20 (by weight) per 100 units of interlayer film scraps. The Laboplastmill setting temperature was set to 30°C, and the sample for this example was obtained in the same manner as in Example 1.

[0056] [Example 6] In Example 5, when a pseudo-interlayer was used instead of interlayer scraps, it was confirmed whether there was any change in odor or loss of deodorizing properties when DM1 was added to the resin. In this example, DM1 was used as the aromatic substance, and the amount of DM1 was 20 (by weight) to 100 pseudo-interlayers, and the Laboplastmill setting temperature was 50°C. The sample for this example was obtained in the same manner as in Example 1.

[0057] [Example 7] The sample for this example was obtained in the same manner as in Example 1, except that the pseudo-interlayer was replaced with interlayer scrap material, DM1 was used as the aromatic substance, the amount of DM1 was 30 (by weight) per 100 units of interlayer scrap material, and the Laboplastmill temperature was set to 50°C.

[0058] [Example 8] We investigated whether the interlayer film scraps containing DM1, prepared in Example 5, could be added to polyethylene resin (LC525) that does not contain retainers (plasticizers). Since the processing temperature reached the boiling point of water and alcohol (140°C), and the amount of DM1 added was smaller compared to other examples, the deodorizing effect of the modulation method may not have been achieved due to the large spatial scale. However, it is possible that an effect could be obtained against, for example, pet urine directly applied to the resulting resin.

[0059] [Example 9] An additional retainer (DF-101) was added to ethylene ethyl acrylate copolymer (EEA) to confirm whether the interlayer film scraps containing DM1, prepared in Example 7, could be added. In this example, the processing temperature reached the boiling point of water and alcohol (100°C), and the amount of DM1 added was smaller compared to other examples. However, in this example, a resin (Example 7) with a relatively larger amount of DM1 added was used compared to the interlayer film scraps containing DM1 used in Example 8 (Example 5). It was confirmed that the volatility of DM1 increased with the addition of the additional plasticizer, thus providing a deodorizing effect.

[0060] [Example 10] We confirmed whether the interlayer film scraps, to which DM1 prepared in Example 7 was added, could be added to sodium polyacrylate (a superabsorbent polymer). In this example, although the processing temperature was high (90°C) and the amount of DM1 added was small compared to other examples, sodium polyacrylate, while not thermoplastic, is a hydrophilic polymer with carboxyl groups and therefore has high surface wettability. For example, it was confirmed that it can absorb odor components such as feces and urine and deodorize them using the DM1 modulation method.

[0061] [Example 11] In Example 5, when an additional retainer (DF-101) was added at a rate of 20 (by weight) per 100 interlayer end materials and the processing temperature was changed to 60°C, it was confirmed whether the same effect as in Example 5 could be obtained due to an increase in the hydrophobic component.

[0062] Table 2 shows the results of odor evaluation B for the samples obtained in Examples 4 to 11. It was confirmed that the modulating deodorant "DeoMagic" for agriculture and dairy farming can be added to pseudo-interfilms or interfilm scraps containing a retainer with a molar mass of 250 or more of the main component, and that the resulting resin can function as an odor modulator or deodorant.

[0063] [Table 2]

[0064] [Cat litter and pet diaper reviews] 1.Material The interlayer film used is preferably in the form of fine flakes beforehand, but it may also be in the form of a sheet about 5 mm square or several centimeters square with a thickness of several millimeters. For the fragrance aqueous solution used, DM1 was used as the fragrance stock solution, and this stock solution was diluted with distilled water at room temperature as needed to prepare various fragrance aqueous solutions. The dilution concentration was adjusted by kneading 15% by weight of the fragrance aqueous solution relative to the total weight of the interlayer film, so that the fragrance components in the composition reached the predetermined concentration.

[0065] 2. Evaluation Procedure According to Tables 3 and 4, deodorizers for each example were prepared, and cat litter and disposable diapers were manufactured. A predetermined amount of interlayer film scraps and DM1 were placed in a laboplast mill preheated to 60°C and kneaded for 5 minutes to obtain a resin mixture. 3g of this resin mixture was cut out with scissors and molded into a 60mm x 60mm x 0.5mm sheet using a tabletop press set to a predetermined temperature. The obtained sheet was shredded into granules of approximately 0.5mm square to obtain granular deodorizer. The obtained granular deodorizer was placed in a polyethylene bag and stored at room temperature in a place away from direct sunlight for at least two weeks before being used to manufacture and evaluate cat litter, disposable diapers, and liquid deodorizer. The deodorants in each example were obtained by changing the concentration of DM1, and the weight ratio of DM1 with the interlayer film scrap (resin substrate) set to 100 was 0.15 (Example 12), 1.5 (Example 13), 5 (Example 14), 15 (Example 15), and 0.015 (Example 16).

[0066] 2.1. Cat litter 30g of commercially available cat litter (deodorizer-free, Iris Ohyama Co., Ltd.'s "Paper Fresh" (registered trademark) PFC-7L 7L, main ingredient is paper), 0.9g of granular deodorizer, and 2g of distilled water were added to a lab plast mill set to 30℃ and mixed for 3 minutes. The mixture was removed from the lab plast mill and left to dry in an 80℃ constant temperature bath for 2-3 minutes. After that, it was crushed to an appropriate size (approximately 5mm-10mm square) to obtain cat litter containing the deodorizers of Examples 12-16.

[0067] 2.2 Liquid deodorant (Example 17) Eight grams of the resin mixture obtained before molding using a tabletop press were cut out and immersed in 100 grams of distilled water. After 24 hours, the resulting liquid was obtained as a liquid deodorant. The resulting liquid deodorant had the scent of DM1 when viewed from 20 cm away from the rim of a glass. In addition, the immersion liquid clearly showed an orange coloration due to the color of DM1.

[0068] Furthermore, the aforementioned resin mixture was subjected to long-term storage before a liquid deodorant was prepared and evaluated. 8 g of the resin mixture was immersed in 100 g of water for 14 days. The resin mixture was then removed from the water and left at room temperature in a place away from direct sunlight for one year. After that, it was immersed in 100 g of distilled water for 24 hours to obtain a liquid deodorant (using long-term storage resin). This liquid deodorant (using long-term storage resin) had the scent of DM1, but was colorless and transparent to the naked eye, suggesting a fairly low concentration.

[0069] [Table 3]

[0070] 2.3 Deodorizing disposable diapers Pet diapers (Unicharm Corporation's Manner Wear M size) for males were used as "commercially available diapers for urine" and for females as "commercially available diapers for feces." The surface material (the side that does not come into contact with the body) of each diaper was cut out with a cutter, the cotton-like pulp inside was removed, and a predetermined amount of granular deodorant was sprinkled as evenly as possible on the surface of the absorbent paper (the cotton-like pulp side). Then, the cotton-like pulp that had been removed earlier was returned to its original position, and the surface material that had been cut with a cutter was secured with tape to create "simulated urine diapers" and "simulated fecal diapers" containing deodorant (Examples 18 and 19).

[0071] [Table 4]

[0072] 3. Evaluation The cat litter evaluation was conducted using cat litter that had been defecated and urinated in by cat X (breed: Maine Coon, age: 6 years, sex: male, weight: 6 kg). During the evaluation period, cat X was fed Petline Co., Ltd.'s MediFas Dry Food Chicken & Fish flavor.

[0073] The evaluation of pet diapers was conducted using diapers used for defecation and urination by dog ​​Y (breed: Toy Poodle, age: 16 years, sex: male, weight: 5 kg). During the evaluation period, dog Y was fed Royal Canin Japan dry dog ​​food.

[0074] 3.1 Indoor / Outdoor Cat Litter Odor Evaluation The cat litter containing the deodorants shown in Examples 12-15 in Table 3, and the commercially available cat litter without DM1 (Comparative Example 3) were used. Three samples were prepared for each example using the cat litter defecated and urinated in by cat X. • Cat litter sample A: Approximately 25g of cat litter after urination was placed in a lidded storage container (Nakaya Chemical Industry Co., Ltd. "Shikkari Pack E", 83mm (length) x 83mm (width) x 46mm (height), 200mL capacity, (body) polypropylene, (lid) polyethylene) and designated as cat litter sample A. Cat litter sample A was stored indoors with the lid closed. The indoor evaluation was conducted in a typical residential living room (approximately 8 tatami mats). The room temperature was controlled by setting the air conditioner to 26°C and running it from 6:30 AM to 12:00 AM, with the air conditioner turned off at other times. The indoor evaluation in the following examples was conducted in the same manner. • Cat litter sample B: Approximately 300 mL of cat litter (about 2 / 3 of which was urine-soaked) was placed in a resin cup (420 mL clear cup manufactured by Daiso Industries Co., Ltd.) after urination. A layer of the same cat litter, free of feces and urine, was placed on top of the urinated cat litter to a thickness of at least 1 cm. This was designated as cat litter sample B. Cat litter sample B was stored outdoors in a cardboard box with a lid, with the lid closed. • Cat litter sample C: Cat litter sample C was prepared by placing approximately 300 mL (about 1 / 3 of which was feces) of cat litter after defecation into a plastic cup (Daiso Industries Co., Ltd. clear cup, 420 mL) and then placing the same cat litter, free of feces and urine, on top of the defecation sample to a thickness of 1 cm or more. Cat litter sample C was stored outdoors in a cardboard box with a lid, with the lid closed.

[0075] The odor of cat litter samples B and C was evaluated once a day. When not being evaluated, the samples were stored outdoors in cardboard boxes. The storage location was a covered, well-ventilated garage, in a place where they were not exposed to direct sunlight.

[0076] Each cat litter sample consisted of three samples taken on different dates. The odor was evaluated by two people, and the average of the three odor evaluations was used as the final result. The odor evaluation was carried out continuously for 14 days from the date each cat litter sample was collected, with intervals of evaluation each day.

[0077] The evaluation periods were as follows: Comparative Example 3 was evaluated from September 16th to October 2nd, Example 12 from October 15th to November 18th, Example 13 from October 23rd to November 26th, Example 14 from November 21st to December 23rd, the evaluation of cat litter samples B and C in Example 14 was from August 3rd to August 18th, and the evaluation of cat litter sample A in Example 14 was from August 12th to September 15th (all in 2024).

[0078] 3.1.1 Evaluation Results The results are shown in Figure 1. When collecting cat litter that had been defecated or urinated in, the cat litter to which the granular deodorant of each example was added had almost no fecal odor. In the cat litter to which the amount of granular deodorant DM1 exceeded 1.5 parts by weight per 100 parts by weight of the resin base material, even when left for a while after defecation or urination (approximately 6 hours, equivalent to sleeping time), there was no fecal odor that lingered in the room. Even when people entered the room from outside, no one noticed the feces or urine of cat X. In contrast, in Comparative Example 3, a fecal odor was detected when collecting the cat litter (especially the odor immediately after defecation).

[0079] The evaluation over a two-week period showed that as the amount (concentration) of the deodorant (DM1 in Examples 12-15) added to the granular deodorant increased, the efficacy and duration of its effects also increased. Furthermore, even at a low addition level of 0.15 parts by weight per 100 parts by weight of the resin base material, sufficient practicality could be obtained.

[0080] 3.2 Evaluation of cat litter odor inside trash cans (outdoor evaluation) Using cat litter defecated and urinated in by cat X, the following two cat litter samples were created. • Cat litter sample D: Using the cat litter from Example 15 after defecation and urination. • Cat litter sample E: Using the cat litter from Comparative Example 3 after defecation and urination.

[0081] Cat litter samples D and E were placed in polyethylene bags (embossed kitchen packs manufactured by Shoei Corporation), the bags were sealed and tied, and then placed in trash cans (kitchen 45L trash cans with lids manufactured by Asvel Corporation). Two trash cans were prepared, one for cat litter sample D and one for cat litter sample E. Cat litter samples collected after each cat urination or defecation were placed in each trash can and accumulated for 14 days. The temperature inside the trash cans varied from 25°C to 40°C, corresponding to the ambient temperature.

[0082] The odor evaluation was conducted by two people, starting from the time the first cat litter sample was introduced, and continuous evaluations were performed every 14 days from the day after the collection date. The evaluation period for cat litter sample D in Example 15 was from August 26 to September 11, and for cat litter sample E in Comparative Example 3, it was from August 17 to August 31 (both in 2024).

[0083] 3.2.1 Evaluation Results The results are shown in Figure 2. Used cat litter was generated almost daily for 14 days, with 14 pieces of cat litter sample D (Example 15) and 16 pieces of cat litter sample E (Comparative Example 3) being discarded and accumulated in the trash cans. The odor inside the trash can for cat litter sample D reached a maximum level of 4, and the odor when the trash can lid was opened reached a maximum level of 2. Even when bringing the nose within 30 cm of the cat litter sample, a strong odor of feces and urine was not detected, and a fermented odor similar to miso, presumably caused by the cat's food, was detected. When the trash can lid was open, the aforementioned fermented odor was only faintly detected within 30 cm of the opening of the lid. In contrast, the trash can for cat litter sample E had a strong odor of feces and urine from the first day, making it difficult to bring the nose within 30 cm of the cat litter sample, and even when the trash can lid was open, by the fourth day it was no longer possible to bring the nose within 30 cm of the opening of the trash can.

[0084] 3.3 Evaluation of the sustained effectiveness of low-concentration deodorants (cat litter) (indoor evaluation) Three cat litter samples were created using cat litter urinated and defecated by cat X. Each cat litter sample was obtained immediately after cat X urinated. • Cat litter sample F: Using the commercially available cat litter from Comparative Example 3, approximately 25g of the cat litter after urination was placed in the aforementioned lidded storage container ("Shikkari Pack E" manufactured by Nakaya Chemical Industry Co., Ltd.). 0.5g of cat litter containing the granular deodorant from Example 16 (DM1 weight ratio of 0.015) was sprinkled onto the cat litter and mixed to create cat litter sample F. Cat litter sample F was stored indoors with the lid closed. • Cat litter sample G: Using the commercially available cat litter from Comparative Example 3, approximately 25g of urinated cat litter was placed in the aforementioned lidded storage container, and 2.5g of the liquid deodorant (using long-term storage resin) from Example 17 was sprinkled in from a spray bottle and mixed to create cat litter sample G. Cat litter sample G was stored indoors with the lid closed. • Cat litter sample H: Using the commercially available cat litter from Comparative Example 3, approximately 25g of cat litter after urination was placed in the aforementioned lidded storage container to create cat litter sample H. Cat litter sample H was stored indoors with the lid closed.

[0085] The odor of cat litter samples F and G was evaluated by three people, along with cat litter sample H (control), starting from 5 minutes after the addition of granular or liquid deodorant (day 1), and continuing every 24 hours until day 8. The evaluation period was from February 23rd to March 2nd (2025).

[0086] 3.3.1 Evaluation Results The results are shown in Figure 3. In the granular deodorant of Example 16, the amount of DM1 added was very low, at 0.015 parts by weight per 100 parts by weight of the resin substrate, but it was able to suppress urine odor for about 7 days (level 1 or lower). In addition, the liquid deodorant of Example 17, even though it was made using a resin mixture that had been left for one year, was able to suppress urine odor for about 3 days (level 1 or lower). In Example 17, even when made using a resin mixture that had been stored for a long time, it was found to be effective as a liquid deodorant, and it was confirmed that the resin mixture can maintain its effectiveness even after long-term storage. In contrast, in Comparative Example 3, the odor was slightly weaker the day after the start of evaluation, but the unpleasant odor quickly increased.

[0087] 3.4 Odor around dog Y's defecation and urination, and odor when changing diapers (indoor evaluation) Using the simulated urine diapers and simulated feces diapers containing the deodorants of Examples 18 and 19 shown in Table 4, as well as the commercially available urine diapers and commercially available feces diapers without DM1 (Comparative Example 4), the surrounding odor when dog Y defecated or urinated, and the odor when the diapers were changed, were evaluated. For the evaluation, two diapers (from the same example or comparative example) – one for urine and one for feces – were fitted to dog Y simultaneously.

[0088] The odor around dog Y during defecation and urination was assessed from a distance of 1.5m from dog Y's position, with the dog still wearing a diaper. The odor during diaper changes was assessed from a distance of 30cm from the diaper dog Y was wearing. The timing of defecation and urination was estimated based on the dog Y's behavior during defecation and urination (for example, the dog may try to bite and remove the diaper after defecating or urinating), and then confirmed by directly checking the diaper.

[0089] For each example and comparative example, the odor around the diapers and the odor during diaper changes were evaluated using one set of diapers (one for feces and one for urine). Only cases where both defecation and urination were observed were evaluated. For each example and comparative example, two people evaluated five diapers (five sets) where both defecation and urination were observed. The evaluation period for Comparative Example 4 was August 14th to August 28th, and for Examples 18 and 19 (September 16th to September 29th) (all in 2024).

[0090] 3.4.1 Evaluation Results (1) Comparative Example 4 (Commercially available product without added deodorant) After each bowel movement and urination, the room was filled with such a strong stench of feces and urine that it was overwhelming. When changing the diapers, I could smell the urine odor from the commercially available urine diapers and the strong fecal odor from the commercially available fecal diapers, even from a distance of 50 cm from the dog.

[0091] (2) Example 18 (0.5g of granular deodorant prepared in Example 15 was added) After defecation and urination, no fecal or urine odor was detected at a distance of 1.5m from the dog in any instance. When changing the disposable diapers, the simulated urine diaper did not emit a urine odor at a distance of 30cm, but the simulated fecal diaper had a slight fecal odor at a distance of 50cm in 3 out of 5 instances, but otherwise no fecal odor was detected at a distance of 30cm.

[0092] (3) Example 19 (1g of granular deodorant prepared in Example 15 added) After defecation and urination, no fecal or urine odor was detected at a distance of 1.5m in any instance, and during diaper changes, no fecal or urine odor was detected at a distance of 30cm in any instance.

[0093] 3.5 Evaluation of diaper odor inside trash cans (outdoor evaluation) This evaluation was conducted using the same disposable diapers (Comparative Example 4, Example 18, Example 19) as those used in Evaluation 3.4. The disposable diapers from each Example and Comparative Example were placed in polyethylene bags (Embossed Kitchen Packs manufactured by Shoei Corporation), the openings of the bags were tied shut, and then placed in trash cans (Kitchen 45L trash cans with lids manufactured by Asvel Corporation). Three trash cans were prepared, and the disposable diapers from each Example and Comparative Example, collected after each bowel movement and urination, were placed in each trash can and accumulated for 14 days. The temperature inside the trash cans varied from 25°C to 40°C, corresponding to the ambient temperature.

[0094] The odor was evaluated by two people, and the evaluation was conducted continuously for 14 days starting from the day after the initial collection of diapers. The evaluation period for Comparative Example 4 diapers was from August 14th to August 28th, and for Example 18 and Example 19 diapers, it was from September 16th to September 29th (all in 2024).

[0095] 3.5.1 Evaluation Results The results are shown in Figure 4. Used diapers were generated almost daily for 14 days, with 16 fecal diapers and 22 urine diapers being discarded and accumulated in the trash can in Example 18, 13 fecal diapers and 16 urine diapers in Example 19, and 18 fecal diapers and 17 urine diapers in Comparative Example 4. In the trash can containing the diapers from Comparative Example 4, the strong odor of feces and urine made it impossible to bring the nose within 30 cm from the first day, and even when the lid of the trash can was opened, it became impossible to bring the nose within 30 cm of the entrance of the trash can by the second day. In contrast, the odor when opening the lid of the trash can containing the diapers from Example 18 (with 0.5 g of granular deodorant added), and the odor inside the trash can, were both at a maximum level 4, and there was no strong odor of feces and urine; instead, a fermented odor like miso, which is thought to be caused by the feed, was detected. Furthermore, in Example 19 (1g of granular deodorant added), the odor when opening the lid of the trash can containing the diaper, as well as the odor inside the trash can, remained at level 2 throughout the evaluation period. No fecal or urine odor was detected, and a fermented odor similar to miso, presumably originating from the feed, was detected, but it was mild and not unpleasant. When using the same granular deodorant with the same weight ratio of aromatic substance to resin substrate (amount of DM1 added to the interlayer film scraps), the results showed that a higher amount added resulted in higher efficacy and longer-lasting effects.

[0096] 3.6 Evaluation Criteria The evaluation criteria used in the above assessment are as follows. Here, odors that irritate the nose (such as ammonia or rotting food odor) and the smell of feces and urine are defined as "unpleasant odors." (1) Criteria for evaluation in evaluations 3.1 and 3.3 Odor level (0-3) Level 0: No unpleasant odor is detected even when the nose is brought within approximately 3 cm of the object. Level 1: A slight unpleasant odor is noticeable at a distance of about 3 cm, but no unpleasant odor is noticeable at a distance of about 20 cm. Level 2: An unpleasant odor is noticeable even at a distance of about 20 cm, but not at a distance of about 50 cm. Level 3: An unpleasant odor is noticeable even at a distance of around 50 cm.

[0097] (2) Criteria for evaluation in evaluations 3.2 and 3.5 <The smell when you open the trash can lid> Odor level (0-6) Level 0: No unpleasant odor is detected even when the nose is brought within 10 cm of the lid. Level 1: No unpleasant odor is detected even when brought within 30cm. Level 2: When approached within 30cm, there is an odor other than an unpleasant smell, but it is mild and not bothersome. Level 3: An unpleasant odor is noticeable when approached within 30cm, but it is mild and not bothersome. Level 4: When approached within 30cm, the odor is strong and slightly unpleasant, but not a generally unpleasant smell. Level 5: When approached within 30cm, the odor is strong and unpleasant, causing some discomfort. Level 6: When brought within 30cm, the odor is strong and unpleasant, making it difficult to smell continuously.

[0098] <Smell inside the trash can> Odor level (0-6) Level 0: Even if you put your head inside the trash can and bring your nose within about 10 cm of the object, you will not detect any unpleasant odor. Level 1: When brought within about 10cm, there is a slightly unpleasant odor, but it is mild and not bothersome. Level 2: When you get within about 30cm, you can smell something other than an unpleasant odor, but it's mild and not bothersome. Level 3: An unpleasant odor is noticeable when you get within about 30cm, but it's mild and not bothersome. Level 4: When you get close, about 30cm away, the smell is strong and slightly unpleasant, but not a truly unpleasant odor. Level 5: When you get within about 30cm, the odor is strong and unpleasant enough to cause some discomfort. Level 6: The trash can emits such a strong, unpleasant odor that you cannot put your head inside.

Claims

1. A resin base material containing at least one selected from polyvinyl acetal resin, polyester resin, polystyrene resin, and polyolefin resin is blended with an aromatic substance and a fixative whose main component has a molar mass of 250 or more. The polyvinyl acetal resin comprises at least one selected from the group consisting of polyvinyl acetal and polyvinyl butyral. The polyester resin comprises at least one selected from the group consisting of polylactic acid, polybutylene succinate, and polybutylene adipate terephthalate. The polystyrene resin comprises at least one selected from the group consisting of polystyrene resin, acrylonitrile butadiene styrene resin, and acrylonitrile styrene resin. The aforementioned aromatic substance is at least one selected from fish attractants and fragrances. The polyolefin resin comprises at least one selected from the group consisting of polyethylene, polypropylene, and copolymerized polyolefins. The aforementioned retainer is Monobasic acid or polybasic acid, At least one alcohol selected from the group consisting of glycols, methanol, ethanol, propanol, and glycol ethers, A fragrance resin composition characterized by being an ester-based plasticizer composed of the following.

2. The aforementioned retainer is succinic acid or adipic acid, At least one alcohol selected from the group consisting of benzyl alcohol and glycol ethers, The aromatic resin composition according to claim 1, wherein the aliphatic polybasic acid ester plasticizer is composed of the following.

3. The aromatic resin composition according to claim 1 or 2, wherein the glycol ether is at least one selected from diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, and diethylene glycol monobutyl ether.

4. The retainer is contained in an amount of 1 part by weight or more and 60 parts by weight or less per 100 parts by weight of the resin substrate. The aromatic resin composition according to claim 1, wherein the aromatic substance is contained in an amount of 0.000001 parts by weight or more and 50 parts by weight or less per 100 parts by weight of the resin substrate.

5. The aromatic resin composition according to claim 1, wherein the aromatic substance is a fish attractant and is used as a lure.

6. The fragrance resin composition according to claim 1, wherein the fragrance substance is a fragrance and is used as an odor modifier.

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