JP7495101B2 - Repellent for creeping pests - Google Patents

Description

The present invention relates to a repellent for crawling pests.

Creeping pests such as ants and cockroaches like to feed on food. In everyday life, creeping pests such as ants and cockroaches often cause problems by sniffing out food, appearing at eating places, or invading food-related equipment.
In repelling the crawling insects, consumers are increasingly conscious of safety and natural products, and farnesyl acetone, a terpene compound, has attracted attention as a repellent component that satisfies these demands.

For example, Example 12 of Patent Document 1 discloses a sheet containing farnesyl acetone in a thermoplastic resin.

Patent No. 4485800

However, the above-mentioned sheets may not provide sufficient repellent effect against crawling pests, and there is a demand for a better repellent for crawling pests.

In view of the above problems, the present invention provides a repellent that exhibits excellent repellent effects against crawling pests.

As a result of intensive research to achieve the above object, the present inventors have found that by bleeding 4 to 110 μg/ ^cm2 of farnesyl acetone per day from the surface of a resin molded article containing farnesyl acetone, an excellent repellent effect against crawling pests can be achieved.

The present invention exerts an excellent repellent effect against crawling pests. Furthermore, since the agent is prevented from being stained even when it comes into contact with the crawling pest repellent of the present invention, there is little concern that the agent will stain, for example, clothes, pottery, metal, etc. Therefore, the crawling pest repellent of the present invention can be used without considering the situation of use.

This is a diagram showing the state of test pieces cut from the creeping insect repellents described in Example 10 and Comparative Example 4, which were left stationary on aluminum foil for 24 hours. 2 is a diagram showing the state in which the test piece has been moved from the position shown in FIG. 1 . Phase diagram 2 of test pieces cut from the crawling insect repellents described in Example 10 and Comparative Example 4 and left to stand on aluminum foil for 24 hours. Phase diagram 2 after the test piece has been moved from the position shown in Figure 1.

The creeping insect repellent of the present invention is obtained by bleeding out 4 to 110 μg/cm ² of farnesyl acetone per day from the surface of a resin molded article containing farnesyl acetone.

The amount of farnesyl acetone bleeding from the surface of the resin molded body per day can be calculated by wiping the entire surface of the crawling insect repellent with a pulp wipe soaked in 1 mL of heptane, leaving it to stand for one day in a room at 25°C away from direct sunlight, then wiping a portion or the entire surface of the crawling insect repellent with the pulp wipe soaked in heptane, extracting farnesyl acetone from the pulp wipe after wiping, and quantitatively analyzing it by gas chromatography. The quantitatively analyzed amount of farnesyl acetone can then be calculated by dividing the area of the wiped surface.

The resins used in the present invention include thermoplastic resins, such as copolymers of polyolefin resins and carboxylic acid esters, or styrene-based elastomers.

Examples of the polyolefin resin in the copolymer of the polyolefin resin and the carboxylic acid ester include polyethylene and polypropylene.

The carboxylic acid ester in the copolymer of the polyolefin resin and the carboxylic acid ester may be an unsaturated carboxylic acid ester or a vinyl carboxylic acid ester.

The unsaturated carboxylate esters include, for example, lower alkyl esters of acrylic acid such as methyl acrylate, ethyl acrylate, and butyl acrylate, and lower alkyl esters of methacrylic acid such as methyl methacrylate, ethyl methacrylate, and butyl methacrylate. The vinyl carboxylate esters include, for example, vinyl esters of lower fatty acids such as vinyl acetate.

Examples of the copolymer of the polyolefin resin and the carboxylic acid ester include ethylene-methyl acrylate copolymer, ethylene-ethyl acrylate copolymer, ethylene-butyl acrylate copolymer, ethylene-methyl methacrylate copolymer, ethylene-ethyl methacrylate copolymer, propylene-methyl acrylate copolymer, propylene-ethyl acrylate copolymer, propylene-butyl acrylate copolymer, propylene-methyl methacrylate copolymer, and propylene-ethyl methacrylate copolymer.

The styrene-based elastomers include block copolymers of styrene and olefins, block copolymers of styrene and conjugated dienes, and hydrogenated products of these copolymers.

Examples of the block copolymer of styrene and an olefin include styrene-ethylene-propylene block copolymer, styrene-ethylene-propylene-styrene block copolymer, styrene-ethylene-ethylene-propylene-styrene block copolymer, styrene-ethylene-butylene-styrene block copolymer, and styrene-isobutylene-styrene block copolymer.

Examples of the block copolymer of styrene and a conjugated diene include a styrene-butadiene-styrene block copolymer and a styrene-isoprene-styrene block copolymer.

The creeping insect repellent of the present invention may contain polyethylene, polypropylene, etc. in addition to the farnesyl acetone, the copolymer of the polyolefin resin and the carboxylic acid ester, or the farnesyl acetone and the styrene elastomer.

Examples of the polyethylene include linear low density polyethylene (hereinafter sometimes referred to as LLDPE), low density polyethylene (hereinafter sometimes referred to as LDPE), and high density polyethylene (hereinafter sometimes referred to as HDPE).

Examples of the LLDPE include Sumikathene L, Sumikathene E, Sumikathene α/Hiα, Excellen FX, and Excellen VL manufactured by Sumitomo Chemical Co., Ltd., Novatec LL manufactured by Japan Polyethylene Co., Ltd., Neozex, Ultzex, and Evolue manufactured by Prime Polymer Co., Ltd., Suntech-LD manufactured by Asahi Kasei Corporation, Nipolon-L and Nipolon-Z manufactured by Tosoh Corporation, and Yumerit manufactured by Ube Maruzen Polyethylene Co., Ltd.

Examples of the LDPE include Sumikathene manufactured by Sumitomo Chemical Co., Ltd., Novatec LD manufactured by Japan Polyethylene Co., Ltd., Petrothene manufactured by Tosoh Corporation, and ∪BE Polyethylene manufactured by Ube Maruzen Polyethylene Co., Ltd.

Examples of the HDPE include Novatec HD manufactured by Japan Polyethylene Co., Ltd., Hi-Zex and Evolue H manufactured by Prime Polymer Co., Ltd., Nipolon Hard manufactured by Tosoh Corporation, Suntech-HD and Creox manufactured by Asahi Kasei Corporation, Hi-Zex Million and Mipelon manufactured by Mitsui Chemicals, Inc., and KEIYO Polyethylene manufactured by Keiyo Polyethylene Co., Ltd.

Examples of the polypropylene include propylene homopolymer (hereinafter sometimes referred to as homo PP), random copolymer with ethylene (hereinafter referred to as random PP), and block copolymer of homo PP and ethylene propylene rubber (block PP).

Examples of the homo PP, random PP and block PP include Sumitomo Noblen manufactured by Sumitomo Chemical Co., Ltd., Prime Polypro manufactured by Prime Polymer Co., Ltd., Sunallomer manufactured by Sunallomer Co., Ltd., and Novatec PP manufactured by Japan Polypropylene Corporation.

The content of farnesyl acetone used in the present invention is usually in the range of 1 to 30% by weight based on the total amount of the repellent.

The crawling insect repellent of the present invention has a weight ratio of the farnesyl acetone to the carboxylic acid ester in the copolymer of the polyolefin resin and the carboxylic acid ester of usually 1:0.51-2.5, preferably 1:0.55-0.7. By being within this range, the amount of farnesyl acetone bleeding from the surface of the resin molded body can be controlled within the range of the present invention, so that an excellent repellent effect against crawling insects can be exhibited while at the same time contamination of the agent from the crawling insect repellent can be suppressed.

In the crawling insect repellent of the present invention, the weight ratio of the farnesyl acetone to the styrene in the styrene-based elastomer is usually 1:0.3-5, and more preferably 1:0.8-2. By being within this range, the amount of farnesyl acetone bleeding from the surface of the resin molded body can be controlled within the range of the present invention, thereby providing an excellent repellent effect against crawling insects while simultaneously suppressing contamination of the agent from the crawling insect repellent.

The creeping insect repellent of the present invention may contain antioxidants, light stabilizers, heat stabilizers, plasticizers, softeners, viscosity regulators, antifouling agents, pigments, dyes, deodorizers, fragrances, perfumes, spreading agents, lubricants, antiblocking agents, surfactants, antistatic agents, clarifying agents, foaming agents, organic fillers, inorganic fillers, etc. in order to impart various properties to the resin molded product.
Examples of the antioxidant include phenol-type antioxidants such as vitamin E, butylhydroxytoluene (hereinafter referred to as BHT), Irganox 1010, and Irganox 1076, and polyphenol-type antioxidants such as tannic acid and gallic acid. The antioxidant is preferably contained in an amount of 0.001 to 10% by weight relative to the farnesyl acetone.

The creeping insect repellent of the present invention can be obtained by, for example, pre-kneading the copolymer of the polyolefin resin and the carboxylic acid ester, or the styrene elastomer, using a kneader such as a Henschel mixer adjusted to 50 to 200°C, adding the farnesyl acetone, and kneading until homogeneous, and then subjecting the resulting kneaded product to injection molding, extrusion molding, press molding, vacuum molding, or the like.

The creeping insect repellent of the present invention can be formed, for example, into a film, sheet, fiber, net, or lattice shape by the above-mentioned molding method.

The creeping insect repellent of the present invention can be laminated on a substrate, for example. Examples of substrates for laminates include commercially available leisure sheets, construction sheets, transport container sheets, transport pallets, placemats, garbage bags, closet sheets, electric wire coverings, factory clean mats, adhesive tapes, etc.
The creeping insect repellent of the present invention can also be used after secondary processing. Examples of secondary processed products include secondary processing of the fibrous creeping insect repellent into bedding, carpets, rugs, mats, etc.
Examples of secondary processing include the use of mesh or lattice-shaped repellents for crawling pests, which can be used to make cushioning net sheets, anti-scattering nets for garbage dumps, etc.
The laminate and the secondary processed product can be placed and used in a location where it is desired to repel crawling pests.

The pest repellent for crawling insects of the present invention is used to repel ants, cockroaches, bedbugs, booklice, beetles, rice weevils, centipedes, millipedes, pillbugs, etc. Among them, it is particularly effective in repelling ants.

The ants include the subfamily Orycinae, Orycinae, Orycinae, Formic ...

The present invention will be further explained below with reference to examples.

Example 1
38 g of linear low-density polyethylene (trade name: Novatec LL UJ790, manufactured by Japan Polyethylene Co., Ltd.) and 9.5 g of ethylene-methyl methacrylate copolymer (ratio of methyl methacrylate in the copolymer: 25% by weight, trade name: Acryft WK307, manufactured by Sumitomo Chemical Co., Ltd.) were melt-kneaded for 5 minutes in a mixer kneader (PLASTI-CORDER, manufactured by Brabender) that had been preheated to 140° C., and then 2.5 g of farnesyl acetone (E,E=98%, manufactured by TAIWAN TEKHO FINE-CHEM. CO., LTD.) was added and kneaded again for 3 minutes to obtain a kneaded product.
14 g of this kneaded material was placed in a 150 mm x 150 mm x 0.5 mm mold and allowed to stand for 3 minutes in a tabletop test press (manufactured by Shinto Metal Works Co., Ltd.) that had been preheated to 140°C, and then pressed at 50 kg/ ^cm2 at the same temperature for 3 minutes and then at 100 kg/ ^cm2 at the same temperature for 3 minutes.Then, the material was cooled and removed from the mold to obtain the crawling insect repellent of the present invention.

Example 2
In Example 1, the amounts of linear low density polyethylene, ethylene-methyl methacrylate copolymer, and farnesyl acetone were changed to 36.8 g, 9.2 g, and 4 g, respectively, to obtain a repellent for crawling insects of the present invention.

( Reference Example 1 )
12.5 g of a compound containing an ethylene-propylene random copolymer (product name: Novatec PP EG8B, manufactured by Japan Polypropylene Corporation) and farnesyl acetone (product name: SROPE-FAC20-PP, manufactured by Kuraray Trading Co., Ltd., farnesyl acetone content 20% by weight), 37.5 g of the above-mentioned ethylene-propylene random copolymer, and 0.025 g of BHT were melt-kneaded for 5 minutes in a mixer kneader (PLASTI-CORDER, manufactured by Brabender) preheated to 160° C. to obtain a kneaded product.
14 g of this kneaded material was placed in a 150 mm x 150 mm x 0.5 mm mold and left to stand for 3 minutes in a tabletop test press (manufactured by Shinto Metal Works Co., Ltd.) preheated to 160°C, and then pressurized at 50 kg/ ^cm2 at the same temperature for 3 minutes and then at 100 kg/ ^cm2 at the same temperature for 3 minutes.Then, the material was cooled and removed from the mold to obtain the crawling insect repellent of Reference Example 1 .

( Reference Example 2 )
The amount of the compound in Reference Example 1 was changed to 17.5 g, the amount of the ethylene-propylene random copolymer to 32.5 g, and the amount of BHT to 0.035 g, to obtain a repellent for crawling insects in Reference Example 2 .

( Reference Example 3 )
The amount of the compound in Reference Example 1 was changed to 25 g, the amount of the ethylene-propylene random copolymer to 325 g, and the amount of BHT to 0.05 g, to obtain a repellent for crawling insects of Reference Example 3 .

( Reference Example 4 )
The amount of the compound in Reference Example 1 was changed to 2.5 g, the amount of the ethylene-propylene random copolymer to 47.5 g, and the amount of BHT to 0.005 g, to obtain a repellent for crawling insects of Reference Example 4 .

(Example 7)
45 g of an ethylene-methyl methacrylate copolymer (ratio of methyl methacrylate in the copolymer: 25% by weight, product name: Acryft WK307, manufactured by Sumitomo Chemical Co., Ltd.) was melt-kneaded for 5 minutes in a mixer kneader (PLASTI-CORDER, manufactured by Brabender) that had been preheated to 140° C., and then 5 g of farnesyl acetone (E,E=98%, manufactured by TAIWAN TEKHO FINE-CHEM. CO., LTD.) was added and kneaded again for 3 minutes to obtain a kneaded product.
14 g of this kneaded material was placed in a 150 mm x 150 mm x 0.5 mm mold and left to stand for 3 minutes in a tabletop test press (manufactured by Shinto Metal Works Co., Ltd.) preheated to 140°C, and then pressed at 50 kg/ ^cm2 at the same temperature for 3 minutes and then at 100 kg/ ^cm2 at the same temperature for 3 minutes.Then, the material was cooled and removed from the mold to obtain the crawling insect repellent of the present invention.

(Example 8)
15 g of an ethylene-propylene random copolymer (product name: Novatec PP EG8B, manufactured by Japan Polypropylene Corporation) and 25 g of a styrene-ethylene-propylene-styrene block copolymer (proportion of styrene in the copolymer: 30% by weight, product name: Septon 2007, manufactured by Kuraray Co., Ltd.) were melt-kneaded for 5 minutes in a mixer kneader (PLASTI-CORDER, manufactured by Brabender) preheated to 165° C., and then 10 g of farnesyl acetone (E,E=98%, manufactured by TAIWAN TEKHO FINE-CHEM. CO., LTD.) was added and kneaded again for 3 minutes to obtain a kneaded product.
14 g of this kneaded material was placed in a 150 mm x 150 mm x 0.5 mm mold and left to stand for 3 minutes in a tabletop test press (manufactured by Shinto Metal Works Co., Ltd.) preheated to 160°C, and then pressurized at 50 kg/ ^cm2 at the same temperature for 3 minutes and then at 100 kg/ ^cm2 at the same temperature for 3 minutes.Then, the material was cooled and removed from the mold to obtain a repellent for crawling pests of the present invention.

Example 9
In Example 8, the amounts of the ethylene-propylene random copolymer, the styrene-ethylene-propylene-styrene block copolymer, and the farnesyl acetone were changed to 25 g, 20 g, and 5 g, respectively, to obtain a repellent for crawling insects of the present invention.

Example 10
In Example 8, the amounts of the ethylene-propylene random copolymer, the styrene-ethylene-propylene-styrene block copolymer, and the farnesyl acetone were changed to 30 g, 10 g, and 10 g, respectively, to obtain a repellent for crawling insects of the present invention.

(Example 11)
In Example 8, the amounts of the ethylene-propylene random copolymer, the styrene-ethylene-propylene-styrene block copolymer, and the farnesyl acetone were changed to 24.5 g, 24 g, and 1.5 g, respectively, to obtain a repellent for crawling insects of the present invention.

Example 12
In Example 8, the amounts of the ethylene-propylene random copolymer, the styrene-ethylene-propylene-styrene block copolymer, and the farnesyl acetone were changed to 47 g, 1.5 g, and 1.5 g, respectively, to obtain a repellent for crawling insects of the present invention.

(Comparative Example 1)
In Example 3, the compound was changed to 0.25 g, the ethylene-propylene random copolymer to 49.75 g, and BHT to 0.0005 g, to obtain a comparative repellent for crawling insects.

(Comparative Example 2)
In Example 7, the amount of ethylene-methyl methacrylate copolymer was changed to 32 g, and the amount of farnesyl acetone was changed to 18 g, to obtain a comparative repellent for crawling insects.

(Comparative Example 3)
40 g of a butyl acrylate-methyl methacrylate copolymer (ratio of methyl methacrylate in the copolymer: 50% by weight, product name: Parapet GR-F, manufactured by Kuraray Co., Ltd.) was melt-kneaded for 5 minutes in a mixer kneader (PLASTI-CORDER, manufactured by Brabender) that had been preheated to 170°C, and then 10 g of farnesyl acetone (E,E=98%, manufactured by TAIWAN TEKHO FINE-CHEM. CO., LTD.) was added and kneaded again for 3 minutes to obtain a kneaded product.
14 g of this kneaded material was placed in a 150 mm x 150 mm x 0.5 mm mold and left to stand for 3 minutes in a tabletop test press (manufactured by Shinto Metal Works Co., Ltd.) preheated to 170°C, and then pressurized at 50 kg/ ^cm2 at the same temperature for 3 minutes and then at 100 kg/ ^cm2 at the same temperature for 3 minutes.Then, the material was cooled and removed from the mold to obtain a comparative creeping insect repellent.

(Comparative Example 4)
In Example 8, the amounts of the ethylene-propylene random copolymer, the styrene-ethylene-propylene-styrene block copolymer, and the farnesyl acetone were changed to 35 g, 5 g, and 10 g, respectively, to obtain a comparative repellent for crawling insects.

(Comparative Example 5)
In Example 8, the amounts of the ethylene-propylene random copolymer, the styrene-ethylene-propylene-styrene block copolymer, and the farnesyl acetone were changed to 25.5 g, 24 g, and 0.5 g, respectively, to obtain a comparative repellent for crawling insects.

(Formulation example)
50 g of linear low-density polyethylene (product name: Sumikathene E FV405, manufactured by Sumitomo Chemical Co., Ltd.) was melt-kneaded for 5 minutes in a mixer kneader (PLASTI-CORDER, manufactured by Brabender) preheated to 140° C. to obtain a kneaded material.
14 g of this kneaded product was placed in a 150 mm x 150 mm x 0.5 mm mold and allowed to stand for 3 minutes in a tabletop test press (manufactured by Shinto Metal Works Co., Ltd.) preheated to 170°C, and then pressurized at 50 kg/ ^cm2 at the same temperature for 3 minutes and then at 100 kg/ ^cm2 at the same temperature for 3 minutes.Then, the product was cooled and removed from the mold to obtain a resin molding that did not contain farnesyl acetone.

<Test 1: Checking for stains on aluminum foil>
The creeping insect repellents described in Examples 1 to 12 and Comparative Examples 1 to 5 were cut to 30 mm x 150 mm x 0.5 mm to prepare test pieces. Next, a pulp wipe (product name: Pro Wipe, manufactured by Daio Paper Co., Ltd.) measuring 195 mm x 125 mm was folded five times to approximately 35 mm x 25 mm. Then, 1 mL of heptane was dropped onto the folded wipe, and one side of the test piece measuring 30 mm x 150 mm was wiped along the longitudinal direction. Another wipe was prepared in the same manner as above, folded five times, and 1 mL of heptane was dropped onto it, and the other side of the test piece measuring 30 mm x 150 mm was wiped.
Assuming that the creeping insect repellent was placed on a metal transport container, the test piece that had been wiped was placed on aluminum foil and left to stand for 24 hours at 25° C. After 24 hours, the test piece was lifted up and the aluminum foil was observed to visually check for the presence or absence of staining by farnesyl acetone.

Typical examples are shown in Figures 1 to 4. Test pieces cut from the crawling insect repellent described in Example 10 did not stain the aluminum foil. Test pieces cut from the crawling insect repellent described in Comparative Example 4 stained the aluminum foil, and the letters written with an oil-based marker bled (circled in Figure 4). Such staining and bleeding of letters were observed with other comparative crawling insect repellents.

<Test 2: Measurement of the amount of bleeding from the repellent>
Regarding the amount of bleeding of farnesyl acetone from the creeping insect repellent, the surface of the resin molding that was not in contact with the aluminum bar was wiped with a pulp wipe with 1 mL of heptane dropped thereon, the pulp wipe was placed in a 60 cc glass vial, 18 mL of heptane was added, and ultrasonic treatment (42 kHz) was performed for 20 minutes to extract farnesyl acetone from the wipe, and the extract was measured by gas chromatography. The analytical data was analyzed using software (GCsolution) manufactured by Shimadzu Corporation.

<Test 3: Repellent test for house ants>
Each of the creeping insect repellents described in Examples 1 to 12 and Comparative Examples 1 to 5 was cut into a test piece measuring 100 mm x 100 mm x 0.5 mm to prepare one piece.
Seventeen stainless steel trays (24 cm x 20 cm x 3 cm high) were prepared with Fluon applied to the sides to prevent the escape of house ants, and each test specimen was attached with cellophane tape near the center of each stainless steel tray.
Thirty workers of the house ant were released into the bat, six dead female adult Culex pipiens mosquitoes were placed near the center of the test specimen as bait, and a cotton ball soaked in 5% sugar water was placed on the stainless steel bat to start the test.
The test was carried out in a laboratory at room temperature of about 25±1° C., and the repellent effect against the house ant was evaluated based on the eating state of the bait 24 hours after the start of the test. The evaluation was that the house ant "invaded" when the bait was eaten, and that the house ant "avoided" when the bait was not eaten.

The results of Tests 2 and 3 are shown in Table 1.

<Test 4: Repellent test for house ants 2>
Two test pieces each of the creeping insect repellents described in Example 8 and Comparative Example 4 were prepared by cutting them to 100 mm x 100 mm x 0.5 mm, and one of these test pieces was subjected to the test described below on the day after the test piece was prepared.
The remaining test pieces were left to stand for two weeks in front of the materials warehouse of Sumika Environmental Science Co., Ltd., in preparation for field tests, and then the tests described below were carried out.
Four stainless steel trays (24 cm x 20 cm x 3 cm high) were prepared with Fluon applied to the sides to prevent the escape of the house ants, and each test piece was attached with cellophane tape near the center of each stainless steel tray.
Fifty workers of the house ant were released into the bat, one dead German cockroach was placed near the center of the test specimen as bait, and a cotton ball soaked in 5% sugar water was placed on the stainless steel bat to start the test.
The test was carried out in a laboratory at room temperature of about 25±1°C, and the repellent effect against the house ant was evaluated based on the eating state of the bait 24 hours after the start of the test. The evaluation was made as follows: if the bait was eaten, the house ant "invaded", and if the bait was not eaten, the house ant "avoided". The results are shown in the table below.

[Table 2]

<Test 5: Repellent test for Argentine ants>
The creeping insect repellents described in Reference Examples 1 to 3 and the resin molded bodies described in the Formulation Examples were placed in the habitat of Argentine ants. One insect jelly (trade name: Wide Cup Jap no Mori Ikusei 50, manufactured by Fujicon Co., Ltd.) was placed in the center of each repellent to start the test. Each repellent was observed at 1, 2, 3, 5, 7, and 8 hours after the start of the test, and the repellent effect against Argentine ants was evaluated. The results are shown in Table 3.

〇： アルゼンチンアリは侵入せず
△ ： アルゼンチンアリは侵入したが、行列は成していない
× ： アルゼンチンアリが侵入し、行列を形成

〇: Argentine ants did not invade △: Argentine ants invaded but did not form a line ×: Argentine ants invaded and formed a line

Claims (5)

A crawling insect repellent comprising a resin molded product containing farnesyl acetone and at least one resin selected from the group consisting of a copolymer of a polyolefin resin and a carboxylic acid ester and a styrene elastomer ,
The amount of farnesyl acetone is 1 to 30% by weight based on the total amount of the repellent,
When the resin contains a copolymer of a polyolefin resin and a carboxylic acid ester, the weight ratio of farnesyl acetone to the carboxylic acid ester of the carboxylic acid ester copolymer is 1:0.51 to 2.5;
When the resin contains a styrene-based elastomer, the weight ratio of farnesyl acetone to styrene in the styrene-based elastomer is 1:0.3-5;
When the resin molded body is allowed to stand at 25° C. for 24 hours, 4 to 110 μg/cm ² of farnesyl acetone is bled out from the resin molded body per day to form a repellent for crawling pests. When the resin contains a copolymer of a polyolefin resin and a carboxylic acid ester, the weight ratio of farnesyl acetone to the carboxylic acid ester is 1:0.55 to 0.7;
2. The repellent for crawling insects according to claim 1, wherein when the resin contains a styrene-based elastomer, the weight ratio of farnesyl acetone to styrene is 1:0.8-2. A laminate comprising the creeping insect repellent according to claim 1 or 2 laminated on a substrate. A secondary processed product of the creeping insect repellent according to claim 1 or 2 . A method for repelling creeping pests, comprising contacting creeping pests with the repellent for creeping pests according to claim 1 or 2 to repel them.