Aromatic resin

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

Fragrance resin

[0001] The present invention relates to an aromatic resin, and further to a deodorant, an artificial bait and an odor-modifying agent using the same.

[0002] Various techniques for blending resins and fragrances have been investigated to date, but they have had problems such as insufficient continuity of the fragrance effect and suppressed release of the fragrance. Furthermore, there have been cases where the mechanical properties of the base resin have been impaired (see, for example, Patent Documents 1 to 5).

[0003] In addition, various types of artificial baits for fishing and the like have traditionally been offered, primarily made of plastics based on polyvinyl chloride (PVC) elastomers. These plastics have been widely used as artificial baits due to their high elasticity and adhesive properties, as well as their high visibility to fish and other creatures. However, in recent years, artificial baits made from biodegradable resins have been proposed due to their high safety and low environmental impact (see, for example, Patent Documents 6 and 7). Biodegradable artificial baits generally lack sufficient needle tear strength, and when a hook is attached to an artificial bait and cast, the tensile stress between the hook and the artificial bait can cause the artificial bait to tear, resulting in the artificial bait becoming detached. Therefore, artificial baits made from biodegradable materials with improved needle tear strength have been investigated (see, for example, Patent Documents 8 and 9).

[0004] However, biodegradable resins also take time to decompose naturally and remain in the natural environment for a long period of time, making it difficult to solve problems related to environmental impacts such as marine pollution solely through the use of biodegradable resins. Furthermore, the issue of how well artificial baits function with the five senses of fish and other creatures has been an issue, and there has not been sufficient research into how they affect the senses of smell and taste.

[0005] JP 2015-44771 JP 2022-146037 JP 2003-94569 JP 2013-531746 JP 2003-201374 JP 2005-143413 JP 2003-134971 JP 2004-201626 JP 2003-009721

[0006] The present invention aims to solve the above problems and to provide an aromatic resin that provides a long-lasting fragrance effect and sufficient fragrance release. Another object of the present invention is to provide an aromatic resin that is flexible and elastic, does not tear easily like artificial baits made of polyvinyl chloride, and can be used as an artificial bait that effectively stimulates the five senses of fish and the like, and that can also be used as an odor modifier or deodorizer suitable for use in cat litter and the like.

[0007] In order to achieve the above object, the aromatic resin of the present invention is obtained by blending an aromatic substance and a retaining agent whose main component has a molar mass of 250 or more with a resin base material containing at least one resin selected from polyvinyl acetal resin, polyester resin, polystyrene-based resin, and polyolefin resin, wherein the polyvinyl acetal resin contains at least one resin selected from the group consisting of polyvinyl acetoacetal and polyvinyl butyral, the polyester resin contains at least one resin selected from the group consisting of polylactic acid, polybutylene succinate, and polybutylene adipate terephthalate, the polystyrene-based resin contains at least one resin selected from the group consisting of polystyrene resin, acrylonitrile-butadiene-styrene resin, and acrylonitrile-styrene resin, and the polyolefin resin contains at least one resin selected from the group consisting of polyethylene, polypropylene, and copolymer polyolefin.

[0008] In the aromatic resin of the present invention, the retaining agent is preferably an ester-based plasticizer composed of a monobasic acid or a polybasic acid and at least one alcohol selected from the group consisting of glycol, methanol, ethanol, propanol, and glycol ether.

[0009] In the fragrance resin of the present invention, the retaining agent is preferably an aliphatic polybasic acid ester plasticizer composed of succinic acid or adipic acid, and at least one alcohol selected from the group consisting of benzyl alcohol and glycol ethers.

[0010] In the aromatic resin of the present invention, the glycol ether is preferably 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 retaining agent is contained in an amount within the range of 1 part by weight to 60 parts by weight per 100 parts by weight of the resin base material, and in the fragrant resin of the present invention, it is preferred that the fragrant substance is contained in an amount within the range of 0.000001 parts by weight to 50 parts by weight per 100 parts by weight of the resin base material.

[0012] In the aromatic resin of the present invention, the aromatic substance is preferably a deodorizing component and is used as a deodorizer.

[0013] In the aromatic resin of the present invention, the aromatic substance is preferably a fish attractant and is used as an artificial bait.

[0014] In the aromatic resin of the present invention, the aromatic substance is preferably a fragrance, and is used as an odor-modifying agent.

[0015] The present invention can provide an aromatic resin that has sufficient continuity of fragrance effects, including odor-modulating and deodorizing effects, and that releases sufficient fragrance.

[0016] Fig. 1 shows the odor evaluation results for cat litter indoors and outdoors. Fig. 2 shows the odor evaluation results for cat litter placed in a trash can. Fig. 3 shows the evaluation results for the persistence of deodorizing effect. Fig. 4 shows the odor evaluation results for disposable diapers placed in a trash can.

[0017] The following examples illustrate the forms and configurations of the present invention, but the present invention is not limited to these, and all forms and configurations that comply with the intent of the claims, problem-solving means, effects of the invention, etc. are included in the present invention.

[0018] The present invention provides a fragrance resin obtained by blending a fragrance substance, preferably a low-boiling, highly volatile odorant, with a specific resin substrate together with a specific retention agent. The specific resin substrate is a resin substrate containing at least one resin selected from the group consisting of polyvinyl acetal resin, polyester resin, polystyrene-based resin, and polyolefin resin, where the polyvinyl acetal resin is at least one selected from the group consisting of polyvinyl acetoacetal and polyvinyl butyral, the polyester resin is at least one selected from the group consisting of polylactic acid, polybutylene succinate, and polybutylene adipate terephthalate, the polystyrene-based resin is at least one selected from the group consisting of polystyrene resin, acrylonitrile-butadiene-styrene resin, and acrylonitrile-styrene resin, and the polyolefin resin is at least one selected from the group consisting of polyethylene, polypropylene, and copolymer polyolefin. The specific retention agent is a retention agent 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 retaining agent, and then further mixed with the polyester resin, polystyrene-based resin, and polyolefin resin depending on the application.

[0019] Scent components (both good and bad) are used in a variety of applications, including deodorants, food, aromatherapy, artificial bait, and scents that attract living organisms (e.g., fish attractants). However, many scent components have high volatility and low boiling points, making them difficult to add to resins that require high processing temperatures. Adding fragrances, such as fragrances diluted with alcohol or water, to resins is particularly difficult. In the present invention, suitable scent components include "Bonito Extract T" (manufactured by Yaizu Suisan Kagaku Kogyo Co., Ltd.), "Tea Tree" (sold by Incent Co., Ltd. (country of origin: Australia), 100% natural tea tree essential oil), and "Deo Magic" (registered trademark) (manufactured by Shikibo Co., Ltd.), depending on the application. Scent components are oil-based and become more volatile when heated. Furthermore, because they are composed of multiple components with different boiling points, maintaining the component balance (mixing ratio) becomes more difficult as the temperature increases. For this reason, a retaining agent such as a plasticizer whose main component has a molar mass of 250 or more is blended to suppress the volatilization of each component.

[0020] When adding an aromatic substance to a resin, if the addition can be done at as low a temperature as possible along with the blending of a retaining agent, it is believed that the balance of the components (compound ratio) can be maintained without disrupting the balance. On the other hand, the undiluted solutions of each component (odor component) of the aromatic substance have such a strong odor that they require considerable dilution. Furthermore, because odors are perceived through volatilization, it has traditionally been desirable for the retaining agent itself to be volatile. For this reason, general deodorants and air fresheners are diluted with alcohol or water, and these diluted components also function as retaining agents. In other words, if finely dispersed odor components diluted with water or alcohol can be incorporated into a resin, the resin can function as a deodorant or air freshener while the water or alcohol volatilizes outside the resin. However, the present invention focuses on suppressing the volatilization of the aromatic component when kneading the resin at high temperatures above the volatilization temperature of the aromatic component. Therefore, the present invention is characterized by blending a plasticizer or the like, whose main component has a molar mass of 250 or more and can be used even at high kneading temperatures, as a retaining agent. The fragrant resin obtained by blending the fragrant substance and the specific retaining agent into the resin base material can be added as an additive to another resin, thereby making it possible to blend the scent into the other resin.

[0021] The retaining agent in the fragrance resin of the present invention is preferably an ester-based plasticizer composed of a monobasic acid or a polybasic acid and at least one alcohol selected from the group consisting of glycol, methanol, ethanol, propanol, and glycol ethers, 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 ethers. 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 Absorption of Resin Substrates] Odors can be detected in very small amounts, and many odors exist in the air at levels between 0.001 ppt and 1 ppt. Therefore, fragrances, which are odorous substances, are supplied to the market in diluted form with water or alcohol. Oil-based odor components are generally insoluble in water, but are used by diluting them with water or other solvents such as alcohol. Water-soluble fragrances include those in which oil-soluble fragrance concentrates are dissolved in alcohol and the insoluble portions are removed, and those in which water-soluble fragrances are dissolved in water (aromatic distilled water). Handling and adding concentrates of fragrances and other odorous substances to resins results in high volatility, poor cost performance, and a high risk of altering the odorant's composition. For this reason, plasticizers are added to fragrances as retention agents to suppress volatilization. However, when adding these to resins, consideration must be given to the impact on the resin's mechanical properties and bleed-out of the plasticizer, which limits the resins to which they can be added. Furthermore, because some types of undiluted odorants are expensive, they are diluted to the required concentration depending on the application and then supplied to the market. For example, "Deomagic" (registered trademark) for dairy and agricultural use (manufactured by Shikibo Co., Ltd.), which captures unpleasant odors and transforms them into pleasant scents, is recommended to be used at a dilution ratio of 20 to 200 times. As such, odorants on the market are diluted with a plasticizer as a retention agent in the case of undiluted solutions, and with water or alcohol in most cases other than undiluted solutions, so their water content must be taken into consideration when using resin substrates. Therefore, in the present invention, a resin substrate containing at least one resin selected from polyvinyl acetal resin, polyester resin, polystyrene resin, and polyolefin resin is used.

[0023] [Combination of Resin Base and Fragrant Substance] Fragrant substances (such as odorant fragrances) are often composed of multiple individual fragrances, modulators, and adjuvants (blended fragrances), each of which has a different boiling point. Heating can change the composition of the fragrance components, resulting in a change in the scent itself or a change in the functionality (effect) of the scent. As a result, the scent after addition to the resin may differ from the original scent, or the scent intensity may be weakened. Furthermore, when diluted fragrances evaporate from water or alcohol, trace amounts of the scent components are also vaporized. Therefore, when the boiling point of water or alcohol is reached, the volatilization of the scent components is activated. In other words, even if the boiling point of the scent is higher than that of water, the scent dissolved in water will also volatilize. At normal pressure, the boiling point of ethyl alcohol is approximately 78.4°C, and the boiling point of water is 100°C. Therefore, when producing a fragrance resin by blending a fragrance substance with a resin, blending at 70°C or below is desirable from the perspective of suppressing volatilization of the fragrance substance, and handling at a lower temperature is preferable. When the fragrance substance is a liquid fragrance substance that does not contain alcohol or water, the fragrance resin can be produced by blending the fragrance substance with the resin at a temperature below the lowest boiling point temperature of each fragrance substance component. To achieve this, it is preferable that the processing temperature of the resin substrate is below the lowest boiling point temperature. If each component of the fragrance substance is oil-based, it can be easily added to the resin. When using a fragrance substance diluted with water or alcohol, for example, if the lowest boiling point temperature is 100°C or higher, it can be blended at a temperature sufficiently lower than the boiling point of ethyl alcohol, within the range of room temperature to approximately 50°C, without significantly affecting the fragrance substance. In the fragrance resin of the present invention, it is preferable that the fragrance substance is contained in a range of 0.000001 to 50 parts by weight per 100 parts by weight of the resin substrate.

[0024] [Hydrophilicity / Hydrophobicity of Resin Substrate] The surface condition of the resin has a significant effect on whether an aromatic resin containing an aromatic substance releases aroma or exhibits odor modulation effects. When compounding (blending, kneading) a resin substrate with an aromatic substance, if the resin surface is hydrophilic, water-soluble substances are easily added to the resin, while oil-soluble substances are difficult to add to the resin. If the resin surface is hydrophobic, water-soluble substances are difficult to add to the resin, while oil-soluble substances are easily added to the resin.

[0025] When the obtained fragrance resin is placed in the air, if the resin surface is hydrophilic, water-soluble substances tend to bleed and volatilize from the resin, while oil-soluble substances tend not to bleed and volatilize from the resin. If the resin surface is hydrophobic, oil-soluble substances tend to bleed and volatilize 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, they tend not to bleed and volatilize from the resin.

[0026] When the obtained aromatic resin is placed in water, if the resin surface is hydrophilic, water-soluble substances tend to bleed and volatilize from the resin, while oil-soluble substances tend not to bleed and volatilize from the resin. If the resin surface is hydrophobic, oil-soluble substances tend to bleed and volatilize 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, they tend not to bleed and volatilize from the resin.

[0027] When blending water-soluble odorants or extracts, the resin surface is preferably hydrophilic. For example, an aromatic resin using a water-soluble fish attractant as an aromatic substance can be suitably used as an artificial lure. The artificial lure attracts fish by bleeding the fish attractant in water, and stops the bleeding of the smelly fish attractant in air, preventing it from adhering to fingers, the body, or clothing. Furthermore, the volatilization of the odorant contained in the fish attractant can notify the user of the remaining amount of fish attractant by the strength of the smell emitted by the artificial lure.

[0028] In view of the above-mentioned water content of the resin substrate, the temperature at the time of blending the resin substrate with the aromatic substance, and the hydrophilicity / hydrophobicity of the resin, when using water-soluble odorous substances or water-soluble extracts containing odorous substances as aromatic substances, the resin must be one that can be added while maintaining the quality of the aromatic substance and that can be used in accordance with the application, and the conditions for this resin are as follows: - A resin with high water content. - A resin with a low Tg that is lower than the boiling point of water, and even lower than the boiling point of ethanol, allowing the processing temperature to be set at approximately room temperature. - A resin with hydrophilic groups that have a high affinity for water.

[0029] Resins that satisfy the above conditions include those containing a resin substrate containing at least one resin selected from polyvinyl acetal resin, polyester resin, polystyrene-based resin, and polyolefin resin, and blended with a plasticizer. Examples include polyvinyl butyral (PVB) resins used in interlayers for automobile windshields, and PVB resin films left over as scrap. While plasticizers are already added to these interlayers, as long as the molar mass of the main component is 250 or greater, these plasticizers function as a retaining agent in the present invention. Therefore, they can be effectively reused without separating the resin components from the interlayer. A suitable plasticizer (retaining agent) is triethylene glycol di-2-ethylhexanoate (G-260, manufactured by Sekisui Chemical Co., Ltd.).

[0030] Generally, deodorizers achieve their effectiveness by spraying or vaporizing fine particles of fragrant components (including modulating components) into the air. This form can be significantly affected by actual air flow, temperature, and humidity. Even in extreme cases, spraying a deodorizer in a strong wind can instantly wash away the fragrant components, making it ineffective. Furthermore, high temperatures increase the risk of can damage due to the expansion of flammable gases used in spray cans, making it dangerous to use them at temperatures above 40°C. Furthermore, when air fresheners are used at temperatures above 40°C, they often evaporate rapidly and quickly lose their 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 been difficult to use to deodorize the inside of trash cans.

[0031] According to the present invention, it is possible to add aromatic substances (scents) obtained by diluting fragrances or the like with alcohol, glycol, polyalkylene glycol, or water, or water-soluble extracts containing a large amount of aromatic substances, to resins, maintaining the quality before addition and controlling the volatilization and bleeding of the aromatic substances (scents) or extracts to the outside of the resin in air or water. The aromatic resins of the present invention can be used in odor-related products such as deodorizing / fragrancing products, artificial baits / fish attractants, pet waste disposal products such as cat litter, air conditioning filters, nonwoven fabrics, cotton, sanitary products, textile products such as underwear / socks / gloves, odor-resistant masks, furniture such as shoeboxes and geta cabinets, car products such as seat covers and mats, aromatherapy products, film products such as garbage bags and body bags, containers for garbage cans and food waste, toilet products, food samples, artificial flowers, incense sticks and incense imitation products, curtains and rugs, laundry bins, waste bins, and medical waste bins.

[0032] The aromatic resin of the present invention is characterized by its long-lasting effectiveness without being significantly affected by the surrounding environment. For example, cat urine can produce an ammonia-like odor as early as the second day. However, adding the deodorizer developed by the present invention to cat litter suppressed this odor for over a week by adjusting the concentration of the deodorizer. This deodorizing technology can be applied to sanitary products such as disposable diapers (pet diapers, infant / toddler / adult care diapers, etc.), sheet products (incontinence sheets, toilet floor sheets, human and pet urine sheets, etc.), sanitary products (napkins, etc.), care products such as sheets and pads, and urine collection pads. Furthermore, it can be applied to portable toilet deodorizers, such as those used for camping, portable toilets, and emergency toilets, as well as deodorizers for disaster areas and vomit disposal.

[0033] The aromatic resin of the present invention may further contain general additives such as inorganic fillers, organic fillers, pigments, dyes, radical initiators, flame retardants, antioxidants, antibacterial agents, bacteriostatic agents, and disinfectants as optional components, provided that the effects of the present invention are not impaired. Examples of inorganic fillers include talc and calcium carbonate. A superabsorbent polymer (SAP) may also be added.

[0034] The aromatic resin of the present invention can be produced, for example, by kneading the various materials in a kneader and then extruding them in an extruder. If necessary, the resulting aromatic resin may be pelletized or processed into a sheet or film.

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

[0036] The resin substrates, retention agents, and aromatic substances used in the examples and comparative examples are as follows: PBS Polybutylene succinate FZ91 (manufactured by Mitsubishi Chemical Corporation) Polyvinyl butyral S-LEC B.BH-A (molecular weight 11.5×10 ４, manufactured by Sekisui Chemical Co., Ltd.) Interlayer film scraps / interlayer film Interlayer film used for automotive and architectural glass (in-process waste, manufactured by Sekisui Chemical Co., Ltd.) DF-101 (retaining agent, plasticizer) Mixed-group dibasic acid ester (benzyl methyl diglycol adipate) "DAIFATTY-101" (manufactured by Daihachi Chemical Industry Co., Ltd., molar mass 338) BXA-N (retaining agent, plasticizer) Bis(2-(2-butoxyethoxy)ethyl) adipate "BXA-N" (manufactured by Daihachi Chemical Industry Co., Ltd., molar mass 435) G-260 (retaining agent, 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 Japan Polyethylene Corporation) EEA Ethylene ethyl acrylate copolymer "A6200" (manufactured by Japan Polyethylene Co., Ltd.) Sodium polyacrylate (sodium salt of acrylic acid polymer, a synthetic polymer with water-absorbing properties, used for cat litter)

[0037] The intermediate film scraps and intermediate film were polyvinyl acetal resin containing a plasticizer (G-260), with a weight ratio of polyvinyl acetal resin to plasticizer of 3:1. The pseudo-interlayer film had a molecular weight of 11.5 × 10 ４ The PVB ("S-LEC B / BH-A", manufactured by Sekisui Chemical Co., Ltd.) was blended with a plasticizer (G-260, manufactured by Sekisui Chemical Co., Ltd.) at a weight ratio of PVB:plasticizer = 3:1.

[0038] The water content of the interlayer film scraps was evaluated. Using a batch kneader (Labo Plastomill (registered trademark) 10S100, manufactured by Toyo Seiki Seisakusho Co., Ltd.), distilled water (purified) was added with the blade rotating at 12.5 rpm. The interlayer film scraps used as the substrate were pre-dried at 80°C for 2 hours before evaluation. The results were as follows: Substrate weight: 90 g Added water weight: 18 g Final weight: 92.2 g Water content: 2.2 g (relative to 90 g of substrate) Processing temperature: Approximately 60°C Water content: Approximately 2.4 g per 100 g of substrate

[0039] The aromatic substances used in the Examples and Comparative Examples are as follows. For "Deomagic" (registered trademark), agricultural and dairy "Deomagic" (DM, manufactured by Cainz Co., Ltd., containing water, ethyl alcohol, and fragrance) was used in the following manner: "DM0": DM used as is "DM1": DM reduced by drying to approximately 50 wt% "Bonito Extract T": Manufactured by Yaizu Suisan Kagaku Kogyo Co., Ltd., moisture content 35% or less, salt content 13.5±2.5% (no reduction by drying or dilution)

[0040] [Evaluation of aromatic resin] [Sample kneading] This was done using a batch kneader (Labo Plastomill (registered trademark) 10S100, manufactured by Toyo Seiki Seisakusho, Ltd.). Unless otherwise specified, the commercially available shapes of the materials used were used as they were, and the interlayer film (including pseudo-interlayer film) was formed into pellets of several millimeters square before use. Before use, the power was turned on and the processing temperature was set, and then the sample was left for at least one hour to eliminate temperature unevenness in the processing tank (mixing tank) and blades.

[0041] [Sample molding] (sheet molding) The resin composition obtained by kneading processing was heated and pressed using a bench press (small press G-12 model, manufactured by Techno Supply Co., Ltd.) at a processing temperature (°C) specified for each sample, and then immediately sandwiched between metal plates (water-cooled heat sinks) with tap water running through them to cool and process into a sheet measuring 60 mm long x 60 mm wide x 1 mm thick. Hereinafter, only the set temperature of the bench press is described for sheet molding.

[0042] [Odor Determination] The odor determination differs depending on the application to which the odor is applied.

[0043] A. Fish attractant (a solution containing a mixture of fish-attracting odors and "umami" flavors used in artificial baits) The following are indicators for evaluating the results of adding a fish attractant (bonito extract T) to resin, and the evaluation was carried out by adding up points for each item. As a rule, the evaluation was carried out when the entire sample was at room temperature, the same as the surrounding area. <Evaluation A1. Smells> (Point 1) The obtained sheet sample (60 mm length x 60 mm width x 1 mm thickness) was placed in a Unipack D-4 (manufactured by Seisan Nippon Co., Ltd.), and after 24 hours the zipper was opened and the presence or absence of an odor was evaluated when the nose was brought within a few centimeters of the opened bag. <Evaluation A2. The smell of Evaluation A1 is the same as Bonito Extract T> (Point 1) <Evaluation A3. Evaluation A1: Strong Smell (Point 1) The sheet sample was placed in a Unipack D-4 (manufactured by Seisan Nippon Co., Ltd.), and after 24 hours, the zipper was opened. Evaluation was based on whether the odor of Evaluation A1 could be detected even when the nose was held 10 cm or more away from the open bag, or whether the odor of Evaluation A1 could be detected when the nose was held a few centimeters closer to the bag without opening the zipper. Evaluation A4: After being placed in water, the odor of Bonito Extract T can be detected from the water surface (Point 1) The sheet sample was cut into four equally sized pieces and placed in a container containing 100 cc of tap water, and the odor on the water surface after about 24 hours was confirmed. Evaluation A5: After being placed in water, the taste of Bonito Extract T can be detected from the water (Point 1) The sheet sample was placed in water, and the taste of the water after about 24 hours was confirmed (conducted simultaneously with Evaluation A4).

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

[0045] B. Deodorant (Deomagic for agriculture and dairy farming: modulation-type deodorant) The following is an index for evaluating the results of adding a modulation-type deodorant to a resin, and the evaluation was carried out by adding up the points for each item. As a rule, the evaluation was carried out when the entire sheet sample was at room temperature, the same as the surrounding area. <Evaluation B1. Smells (not a bad smell)> (Point 1) The sheet sample was placed in a Unipack D-4 (manufactured by Seisan Nippon Co., Ltd.), and after 24 hours, the zipper was opened and the open bag was brought within a few centimeters of the open bag, and the presence or absence of an odor was evaluated. <Evaluation B2. The smell of evaluation B1 is the same as the odor component added> (Point 1) <Evaluation B3. Evaluation B1: Strong odor (Point 1) The sheet sample was placed in a Unipack D-4 (manufactured by Seisan Nippon Co., Ltd.), and after 24 hours, the zipper was opened. Evaluation was based on whether the odor of Evaluation B1 could be detected even when the nose was held more than 10 cm away from the open bag, or whether the odor of Evaluation B1 could be detected when the nose was held a few centimeters closer to the bag without opening the zipper. Evaluation B4: The malodor has disappeared and no different malodor is present, but it is not the desired odor that has been distorted (Point 3) The sheet sample was used for evaluation as a fecal and urine deodorizer. Approximately 20 g of the sheet sample, cut into pieces of a few millimeters square, was placed on aluminum foil in an actual toilet, and the fecal odor was eliminated. The toilet size was one tatami mat x 2.5 m high, and after using the toilet, the fecal odor was eliminated when the user left the toilet for about 30 seconds and then re-entered the toilet. Evaluation B5: The odor becomes a modified target odor (the bad odor disappears and no different bad odor is present) > (Point 4) In evaluation B4, the odor when you enter the toilet again is the modified target odor or the odor of deodorant.

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

[0047] [Example 1] After preliminarily drying the pseudo-interlayer film in a thermostatic chamber, 80 g was weighed out and placed in a Labo Plastomill set at a temperature of 50°C. 16 g of Bonito Extract T was then added, and the mixture was kneaded until the resin temperature and torque value stabilized. The temperature of the bench press during sheet molding was set to 70°C, and a sample of this example was obtained.

[0048] Example 2 A sample of this example was obtained in the same manner as in Example 1, except that the pseudo interlayer film was replaced with an interlayer film waste material and the Labo Plastomill temperature setting was set to 30°C.

[0049] Comparative Example 1 The pseudo-interlayer film was changed to a PVB resin (BH-A) containing no retaining agent (plasticizer), the bonito extract T was added in an amount of 10 parts by weight per 100 parts by weight of the interlayer film scraps, and the Labo Plastomill temperature was set to 80°C. Except for this, mixing was carried out in the same manner as in Example 1, but the resin and the bonito extract T could not be mixed, resulting in a sticky state.

[0050] Comparative Example 2 The pseudo-interlayer film was changed to a polyethylene resin (LC525) containing no retaining agent (plasticizer), the bonito extract T was added in an amount of 10 parts by weight per 100 parts by weight of the interlayer film scraps, and the Labo Plastomill temperature was set to 140°C. Except for this, mixing was carried out in the same manner as in Example 1. However, the bonito extract T volatilized excessively and could not be mixed with the resin.

[0051] [Example 3] A sample of this example was obtained in the same manner as in Example 1, except that the pseudo interlayer film was changed to interlayer film scraps, an additional retaining agent (G-260) was added in an amount of 20 parts (weight ratio) per 100 parts of interlayer film scraps, and bonito extract T was added in an amount of 10 parts (weight ratio) per 100 parts of interlayer film scraps.

[0052] The results of odor evaluation A for the samples obtained in Examples 1 to 3 are shown in Table 1. It was confirmed that water-soluble bonito extract T, which contains a large amount of odorous substances, can be added to pseudo-interlayer films or interlayer film scraps containing a retaining agent whose main component has a molar mass of 250 or more, and that the resulting resin can function as an artificial bait.

[0053]

[0054] Example 4 It was confirmed that unconcentrated DM0, a modulation-type deodorizer, could be added to interlayer film scraps (polyvinyl acetal resin containing plasticizer (G-260)) when the Labo Plastomill processing temperature was set to 30°C. Because unconcentrated DM0 contains a large amount of alcohol and water, it was confirmed whether or not the odor would change or the deodorizing properties would be lost due to evaporation when added to the resin. In this example, the pseudo-interlayer film was replaced with interlayer film scraps, DM0 was used as the fragrant substance, the DM0 was used in a weight ratio of 20 to 100 of interlayer film scraps, and the Labo Plastomill temperature was set to 30°C, but 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 modulation-type deodorant, could be added to interlayer film scrap (polyvinyl acetal resin containing plasticizer (G-260)) with the Labo Plastomill processing temperature set to 30°C. Because DM1 is 1 / 2 concentrated, it is expected that it will be difficult to mix with interlayer film scrap due to the reduced content of alcohol components that can act as a solvent for interlayer film scrap. Therefore, when adding it to the resin, it was confirmed that there was no change in odor or loss of deodorizing properties. In this example, the pseudo-interlayer film was replaced with interlayer film scrap, DM1 was used as the aromatic substance, DM1 was used in a weight ratio of 20 parts by weight to 100 parts by weight of interlayer film scrap, and the Labo Plastomill temperature was set to 30°C, and the sample of this example was obtained in the same manner as in Example 1.

[0056] Example 6 When pseudo-interlayer film was used instead of the interlayer film scraps in Example 5, it was confirmed whether there was a change in odor or a loss of deodorizing properties when DM1 was added to the resin. In this example, DM1 was used as the fragrant substance, and samples for this example were obtained in the same manner as in Example 1, except that DM1 was used in a weight ratio of 20 parts by weight of DM1 to 100 parts by weight of pseudo-interlayer film, and the Labo Plastomill temperature was set to 50°C.

[0057] [Example 7] A sample of this example was obtained in the same manner as in Example 1, except that the pseudo-interlayer film was changed to interlayer film waste, DM1 was used as the aromatic substance, the weight ratio of DM1 was 30 to 100 of interlayer film waste, and the Labo Plastomill temperature setting was 50°C.

[0058] Example 8: It was confirmed whether the interlayer film scraps prepared in Example 5 with DM1 added could be added to a polyethylene resin (LC525) that did not contain a retaining agent (plasticizer). The processing temperature reached the boiling point of water and alcohol (140°C), and the amount of DM1 added was small compared to the other examples. Therefore, the deodorizing effect of the modulation method may not have been achieved due to the large spatial scale. However, it may still be effective against, for example, pet urine that comes into direct contact with the resulting resin.

[0059] Example 9: An additional retaining agent (DF-101) was added to ethylene ethyl acrylate copolymer (EEA), and it was confirmed whether the DM1-added interlayer film scrap produced 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 than in the other examples. However, this example uses a resin (Example 7) with a relatively larger amount of DM1 added than the DM1-added interlayer film scrap used in Example 8 (Example 5). It was confirmed that the addition of the additional plasticizer increased the volatility of DM1, resulting in a deodorizing effect.

[0060] [Example 10] It was confirmed whether the interlayer film scraps to which DM1, produced in Example 7, had been added could be added to sodium polyacrylate (a water-absorbent polymer). In this example, the processing temperature was high (90°C) and the amount of DM1 added was small compared to the other examples. However, although sodium polyacrylate is not thermoplastic, it is a hydrophilic, water-absorbing polymer with carboxyl groups, and therefore has high surface wettability. It was confirmed that it can absorb odorous components, such as those from feces and urine, and deodorize them using the DM1 modulation method.

[0061] [Example 11] In Example 5, an additional retaining agent (DF-101) was added in an amount of 20 parts (by weight) per 100 parts of the interlayer film waste, and the processing temperature was changed to 60°C. It was confirmed whether the same effect as in Example 5 could be obtained by increasing the amount of hydrophobic components.

[0062] The results of odor evaluation B for the samples obtained in Examples 4 to 11 are shown in Table 2. It was confirmed that the odor modulation type deodorizer "Deomagic" for agricultural and dairy use could be added to pseudo-interlayer film or interlayer film scraps blended with a retaining agent whose main component has a molar mass of 250 or more, and that the resulting resin could function as an odor modulation agent or deodorizer.

[0063]

[0064] [Evaluation of cat litter and disposable pet diapers] 1. Materials The interlayer film used is preferably prepared in the form of fine flakes in advance, but it may also be in the form of a sheet of approximately 5 mm square or several centimeters square and several millimeters thick. The fragrance aqueous solution used was prepared by using DM1 as the fragrance concentrate, and diluting this fragrance concentrate with distilled water at room temperature as necessary to obtain various fragrance aqueous solutions. The dilution concentration was adjusted so that the fragrance component in the composition reached the desired concentration after kneading a fragrance aqueous solution of 15% by weight relative to the total weight of the interlayer film.

[0065] 2. Evaluation Procedures The deodorizers of each example were prepared according to Tables 3 and 4, and cat litter and disposable diapers were produced. A predetermined amount of interlayer film scraps and DM1 were placed in a Laboplastomill preheated to 60°C and kneaded for 5 minutes to obtain a resin mixture. 3 g of this resin mixture was cut out with scissors and molded into a 60 mm x 60 mm x 0.5 mm sheet using a bench press set to a predetermined temperature. The obtained sheet was shredded into granules approximately 0.5 mm square to obtain a 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 produce and evaluate cat litter, disposable diapers, and liquid deodorizers. The deodorants in the respective examples had different concentrations of DM1, and the weight ratio of DM1 when the intermediate film waste material (resin substrate) was taken as 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 30 g of commercially available cat litter (deodorizer-free product, Iris Ohyama Co., Ltd. "Paper Fresh" (registered trademark) PFC-7L 7L, mainly made of paper), 0.9 g of granular deodorizer, and 2 g of distilled water were added to a Laboplastomill set to 30°C and mixed for 3 minutes. The mixture was removed from the Laboplastomill and left to dry in an 80°C thermostatic chamber for 2 to 3 minutes. The mixture was then crushed to an appropriate size (approximately 5 mm to 10 mm square) to obtain cat litter containing the deodorizers of Examples 12 to 16.

[0067] 2.2 Liquid deodorant (Example 17) 8 g of the resin mixture obtained before molding using a bench press was cut out and immersed in 100 g of distilled water. After 24 hours, the immersion liquid was obtained as a liquid deodorant. The obtained liquid deodorant gave off the scent of DM1 from a position 20 cm away from the mouth of a cup. Furthermore, the orange coloration of the immersion liquid, due to the color of DM1, was clearly visible to the naked eye.

[0068] The resin mixture was then stored for a long period of time before being used to prepare and evaluate a liquid deodorant. 8 g of the resin mixture was immersed in 100 g of water for 14 days, then removed from the water and left at room temperature for one year in a location not exposed to direct sunlight. The resin mixture was then immersed in 100 g of distilled water for 24 hours, after which the resulting liquid was used as a liquid deodorant (using long-term stored resin). This liquid deodorant (using long-term stored resin) smelled of DM1, but was colorless and transparent to the naked eye, suggesting that the concentration was quite low.

[0069]

[0070] 2.3 Disposable diapers containing deodorants Disposable diapers for boys (Mannerwear, size M, manufactured by Unicharm Corporation) were used as "commercially available disposable diapers for urine" and for girls as "commercially available disposable diapers for feces." The surface material of each disposable diaper (the side that does not come into contact with the body) was cut out with a cutter, the internal cotton-like pulp was removed, and a predetermined amount of granular deodorant was scattered as evenly as possible on the surface of the absorbent paper (the cotton-like pulp side). The cotton-like pulp removed earlier was then returned to its original position, and the surface material cut with the cutter was secured with tape to prepare "simulated disposable diapers for urine" and "simulated disposable diapers for feces" containing deodorants (Examples 18 and 19).

[0071]

[0072] 3. Evaluation Cat litter evaluation was carried out using cat litter that had been used by Cat X (breed: Maine Coon, age: 6 years, sex: male, weight: 6 kg). During the evaluation period, Cat X was fed Medifas Dry Food Chicken & Fish Flavor, a cat food product manufactured by Petline Co., Ltd.

[0073] The evaluation of disposable pet diapers was carried out using disposable diapers used by Dog Y (breed: toy poodle, age: 16 years, sex: male, weight: 5 kg). During the evaluation period, Dog Y was fed with dog dry food manufactured by Royal Canin Japan LLC.

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

[0075] The odor of cat litter sample B and cat litter sample C was evaluated once a day, and except for the odor evaluation, the samples were stored outdoors in a cardboard box in a covered, well-ventilated garage, away from direct sunlight.

[0076] Each cat litter sample was divided into three sets of three samples on different dates. The odor evaluation was performed by two people, and the average of the odor evaluations of the three samples was used as the evaluation result. The odor evaluation was performed continuously every 14 days from the date of collection of each cat litter sample.

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

[0078] 3.1.1 Evaluation Results The results are shown in Figure 1. When collecting cat litter containing defecation or urination, the fecal odor was hardly noticeable in cat litter containing the granular deodorant of each Example, and in cat litter containing more than 1.5 parts by weight of DM1 per 100 parts by weight of resin base material, the fecal odor did not waft into the room even when left for a while after defecation or urination (about 6 hours, equivalent to sleeping). Even when people entered the room from outside, no one noticed Cat X's feces and urine. In contrast, in Comparative Example 3, the feces and urine odor was noticeable when collecting the cat litter (particularly the odor immediately after defecation).

[0079] In the evaluation after two weeks, it was found that as the amount (concentration) of the deodorant (DM1 in Examples 12 to 15) added to the granular deodorant increased, the effect became higher and the duration of the effect became longer, and that sufficient practicality was obtained even with an addition of as little as 0.15 parts by weight per 100 parts by weight of the resin base material.

[0080] 3.2 Evaluation of cat litter odor in a trash can (outdoor evaluation) The following two cat litter samples were prepared using cat litter in which Cat X had defecated and urinated. Cat litter sample D: Cat litter from Example 15 in which Cat X had defecated and urinated was used. Cat litter sample E: Cat litter from Comparative Example 3 in which Cat X had defecated and urinated was used.

[0081] Cat litter samples D and E were placed in polyethylene bags (Embossed Kitchen Pack, manufactured by Shoei Corporation), the tops of the bags were fastened and then placed in trash cans (45L kitchen 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 defecation and urination in each cat litter were placed in each trash can and allowed to accumulate for 14 days. The temperature inside the trash cans varied from 25°C to 40°C depending on the ambient temperature.

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

[0083] 3.2.1 Evaluation Results The results are shown in Figure 2. Used cat litter was generated almost every day for 14 days, with 14 lumps of cat litter sample D (Example 15) and 16 lumps of cat litter sample E (Comparative Example 3) discarded and accumulated in the trash can. The odor inside the trash can for cat litter sample D was at a maximum level 4, and the odor when the trash can lid was opened was at a maximum level 2. Even when the cat litter sample was placed within 30 cm of the trash can, no strong feces or urine odor was detected, and a miso-like fermented odor thought to be caused by the food was detected. When the trash can lid was opened, the fermented odor was only lightly detected within 30 cm of the lid opening. In contrast, the trash can for cat litter sample E had a strong feces and urine odor from the first day, making it difficult to place the cat litter within 30 cm of the trash can opening. Even when the lid was opened, the cat litter sample could no longer be placed within 30 cm of the trash can opening by the fourth day.

[0084] 3.3 Evaluation of Durability of Low-Concentration Deodorizer (Cat Litter) (Indoor Evaluation) The following three cat litter samples were prepared using cat litter that had been used by Cat X to defecate and urinate. 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 25 g of the cat litter after urination was placed in the lidded storage container ("Shichiri Pack E" manufactured by Nakaya Chemical Industry Co., Ltd.). 0.5 g of cat litter containing the granular deodorizer from Example 16 (the weight ratio of DM1 was 0.015) was sprinkled and mixed into the cat litter to prepare 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 25 g of the cat litter after urination was placed in the lidded storage container, and 2.5 g of the liquid deodorizer (using long-term storage resin) from Example 17 was sprinkled and mixed in from a spray bottle to prepare 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 of Comparative Example 3, about 25 g of cat litter after urination was placed in the storage container with the lid, and this was used as cat litter sample H. Cat litter sample H was stored indoors with the lid closed.

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

[0086] 3.3.1 Evaluation Results The results are shown in Figure 3. The amount of DM1 added to the granular deodorant of Example 16 was a very low concentration of 0.015 parts by weight per 100 parts by weight of the resin base material, but the urine odor was suppressed for about 7 days (level 1 or less). Furthermore, even when the liquid deodorant of Example 17 was made using a resin mixture that had been left for one year, the urine odor was suppressed for about 3 days (level 1 or less). It was confirmed that Example 17, even when made using a long-term stored resin mixture, still had the effect of a liquid deodorant, and that the resin mixture maintained its effectiveness even after long-term storage. In contrast, in Comparative Example 3, the odor was slightly weakened the day after the start of the evaluation, but the unpleasant odor soon increased.

[0087] 3.4 Surrounding odor when Dog Y defecates and urinates and odor when changing disposable diapers (indoor evaluation) The simulated urine diapers and the simulated feces diapers containing the deodorizers of Examples 18 and 19 shown in Table 4, as well as the commercially available urine diapers and the commercially available feces diapers (Comparative Example 4) without DM1 added, were used to evaluate the surrounding odor when Dog Y defecates and urinates and the odor when changing disposable diapers. In the evaluation, both the urine diapers and the feces diapers (from the same Example or Comparative Example) were worn by Dog Y at the same time.

[0088] The odor in the vicinity during defecation and urination was judged from a position 1.5 m away from where Dog Y was while still wearing the disposable diaper. The odor during diaper changes was judged from a position 30 cm away from the position of the disposable diaper worn by Dog Y. The timing of defecation and urination was determined by directly checking the disposable diaper after inferring from the presence or absence of behavior observed during defecation and urination (for example, Dog Y was seen to bite the disposable diaper in an attempt to remove it after defecation or urination).

[0089] The odor around the disposable diapers of each Example and Comparative Example / the odor when changing the disposable diapers were judged by dividing the diapers into pairs, one for feces and one for urine, and only cases where both defecation and urination occurred were evaluated by directly checking the disposable diapers. For each Example and Comparative Example, two people evaluated five pairs of disposable diapers (five sets) where both defecation and urination occurred. The evaluation period was August 14th to August 28th for the disposable diaper of Comparative Example 4, and September 16th to September 29th for the disposable diapers of Examples 18 and 19 (both in 2024).

[0090] 3.4.1 Evaluation Results (1) Comparative Example 4 (Commercially Available Product with No Deodorizer Added) After each defecation and urination, the room was filled with a strong odor of feces and urine. When changing the disposable diapers, the commercially available disposable diaper for urine had a urine odor, and the commercially available disposable diaper for feces had a strong feces odor, both of which were detected 50 cm away from the dog.

[0091] (2) Example 18 (0.5 g of the granular deodorizer prepared in Example 15 was added) After defecation and urination, no feces or urine odor was detected at a distance of 1.5 m from the dog on any occasion. When changing disposable diapers, the urine-imitating disposable diaper did not produce a urine odor at a distance of 30 cm. However, the feces-imitating disposable diaper produced a slight feces odor at a distance of 50 cm three times out of five times, but otherwise no feces odor was detected at a distance of 30 cm.

[0092] (3) Example 19 (1 g of the granular deodorizer prepared in Example 15 added) After defecation and urination, the odor of feces and urine was not detected from a distance of 1.5 m in any case, and when changing disposable diapers, the odor of feces and urine was not detected from a distance of 30 cm in any case.

[0093] 3.5 Evaluation of Odor of Disposable Diapers in a Trash Can (Outdoor Evaluation) This evaluation was performed using disposable diapers (Comparative Example 4, Example 18, Example 19) similar to those used in Evaluation 3.4. The disposable diapers of each Example and Comparative Example were placed in a polyethylene bag (Embossed Kitchen Pack manufactured by Shoei Corporation), the top of the bag was tied, and then the bag was placed in a trash can (45L Kitchen Trash Can with Lid manufactured by Asvel Corporation). Three trash cans were prepared, and the disposable diapers of each Example and Comparative Example, which had been collected after each defecation and urination, were placed in each trash can and allowed to accumulate for 14 days. The temperature inside the trash can varied from 25°C to 40°C depending on the ambient temperature.

[0094] The odor evaluation was performed by two people, and the evaluation was continued for 14 days from the day after the first collected disposable diaper was put in. The evaluation period was August 14th to August 28th for the disposable diapers of Comparative Example 4, and September 16th to September 29th for the disposable diapers of Examples 18 and 19 (both in 2024).

[0095] 3.5.1 Evaluation Results The results are shown in Figure 4. Used disposable diapers were generated almost every day for 14 days, with 16 feces and 22 urine diapers discarded and accumulated in the trash cans for Example 18, 13 feces and 16 urine diapers for Example 19, and 18 feces and 17 urine diapers for Comparative Example 4. In the trash can containing the disposable diapers of Comparative Example 4, the strong feces and urine odor inside the trash can was such that it was impossible to get within 30 cm of the trash can from the first day, and even when the lid of the trash can was opened, it was impossible to get within 30 cm of the opening by the second day. In contrast, the odor when the lid of the trash can containing the disposable diapers of Example 18 (added with 0.5 g of granular deodorizer) was opened and the odor inside the trash can were both at a maximum of Level 4. There was no strong feces and urine odor, and instead, a miso-like fermented odor was detected, likely due to the food. Furthermore, the odor when the lid of a trash can containing disposable diapers from Example 19 (1 g of granular deodorizer added) was opened and the odor inside the trash can were both Level 2 throughout the evaluation period, with no feces or urine smell detected, and a fermented odor resembling miso paste, thought to be caused by the food, but which was mild and not bothersome. When using granular deodorizers with the same weight ratio of aromatic substance to resin substrate (amount of DM1 added to interlayer film scrap), the greater the amount added, the greater the effect and the longer its duration.

[0096] 3.6 Evaluation criteria The evaluation criteria for the above evaluations are as follows. Here, odors that irritate the nose (such as the odor of ammonia or the odor of rotting food) and the odor of feces and urine are considered "unpleasant odors." (1) Judgment criteria for evaluations 3.1 and 3.3 Odor level (0-3) Level 0: No unpleasant odor is detected even when the nose is brought up to about 3 cm from the object Level 1: A slight unpleasant odor is detected at about 3 cm, but no unpleasant odor is detected at about 20 cm Level 2: An unpleasant odor is detected even at about 20 cm, but no unpleasant odor is detected at about 50 cm Level 3: An unpleasant odor is detected even at about 50 cm.

[0097] (2) Criteria for evaluation 3.2 and 3.5 <Odor when the lid of the trash can is opened> 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 30 cm. Level 2: When brought within 30 cm, an odor other than an unpleasant odor is detected, but it is light and not painful. Level 3: When brought within 30 cm, an unpleasant odor is detected, but it is light and not painful. Level 4: When brought within 30 cm, an odor other than an unpleasant odor is detected, which is strong and slightly painful. Level 5: When brought within 30 cm, an unpleasant odor is detected, which is strong and slightly painful. Level 6: When brought within 30 cm, the odor is so strong that it is difficult to smell continuously and the unpleasant odor is clearly noticeable.

[0098] <Smell inside the trash can> Odor levels (0-6) Level 0: No unpleasant smell can be detected even when putting your head inside the trash can and bringing your nose up to about 10 cm from the object. Level 1: When approaching about 10 cm, there is a slightly unpleasant smell, but it is light and not painful. Level 2: When approaching about 30 cm, there is a smell other than the unpleasant smell, but it is light and not painful. Level 3: When approaching about 30 cm, there is an unpleasant smell, but it is light and not painful. Level 4: When approaching about 30 cm, there is a strong smell other than the unpleasant smell, which is slightly painful. Level 5: When approaching about 30 cm, there is a strong smell and an unpleasant smell, which is slightly painful. Level 6: The unpleasant smell is so strong that it is not possible to put your head inside the trash can.

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 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 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 according to claim 1, which is an aliphatic polybasic acid ester plasticizer composed of the above.

3. The aromatic resin 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 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 fragrance resin according to claim 1, wherein the fragrance substance is a deodorizing component and is used as a deodorant.

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

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