JP2008044853A - Mothproofing agent, method for controlling clothes insect pest and mothproofing composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suitably display the remainder of an available period even when the available period of a mothproofing agent extends over a long period such as one year. <P>SOLUTION: The mothproofing agent is obtained by supporting a mothproofing composition comprising profulthrin, an alkyl aliphatic carboxylate compound and an ether compound on a sheet carrier. An alkyl aliphatic carboxylate compound in an amount of 0.3-1.3 pts.wt. based on 1 pt.wt. of the profulthrin having 0.7-1.3 relative evaporation rate relatively to the profulthrin, 20-50 cP viscosity at 25°C and 250-350 molecular weight is used as the alkyl aliphatic carboxylate compound. An ether compound in an amount of 0.5-1.3 pts.wt. based on 1 pt.wt. of the profulthrin having 2.0×10<SP>3</SP>to 4.0×10<SP>3</SP>relative evaporation rate relatively to the profulthrin, 3-10 cP viscosity at 20°C and 100-150 molecular weight is used as the ether compound. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an insect repellent, a method for controlling clothing pests, and an insect repellent composition.

  Conventionally, various insect repellents have been developed in order to protect clothing from damage caused by clothing pests such as squid and carp (see, for example, Patent Document 1).

JP2004-129844

  However, if the effective period of the insect repellent is long, such as one year, a stable insecticidal component is volatilized during that period, and a period display function for appropriately displaying the remaining effective period is provided. When manufacturing and using in combination with the substrate having, it was not always satisfactory.

As a result of studies to solve these problems, the present inventors have found an insect repellent having an excellent effect when using profluthrin known as an active ingredient for such purposes, and have reached the present invention.
That is, the present invention provides the following 1. ~ 6. It is as follows.
1. On the sheet carrier,
(A) profluthrin,
(B) 0.3 to 1.3 parts by weight relative to 1 part by weight of profluthrin, the relative volatilization rate to profluthrin is 0.7 to 1.3, the viscosity at 25 ° C. is 20 to 50 cP, and the molecular weight is An aliphatic carboxylic acid alkyl ester compound of 250 to 350;
And (C) 0.5 to 1.3 parts by weight relative to 1 part by weight of profluthrin, the relative volatilization rate with respect to profluthrin is 2.0 × 10 ^{3 to} 4.0 × 10 ³ , and the viscosity at 20 ° C. is 3 An ether compound having a molecular weight of 100 to 150;
An insect repellent, comprising an insect repellent composition containing
2. 1. The total loading ratio of profluthrin, aliphatic carboxylic acid alkyl ester compound and ether compound is 150 to 300 parts by weight with respect to 1000 parts by weight of the sheet carrier. The insect repellent described.
3. The sheet carrier is a sheet carrier having a period display function capable of visually recognizing at least two stages of volatilization and end point according to a change in volatilization amount of the insect repellent composition carried on the sheet carrier. . Or 2. The insect repellent described.
4). 1. The aliphatic carboxylic acid alkyl ester compound is triethyl citrate and the ether compound is 3-methoxy-3-methyl-1-butanol. ~ 3. The insect repellent as described in any one of Claims.
5. 1. ~ 4. A method for controlling a pest of clothing, which is performed by disposing the insect repellent according to any one of the above to a habitat of clothing pest or a place where the clothing pest invades and volatilizing an effective amount of the insect repellent component.
6). (A) profluthrin,
(B) 0.3 to 1.3 parts by weight relative to 1 part by weight of profluthrin, the relative volatilization rate to profluthrin is 0.7 to 1.3, the viscosity at 25 ° C. is 20 to 50 cP, and the molecular weight is An aliphatic carboxylic acid alkyl ester compound of 250 to 350;
And (C) 0.5 to 1.3 parts by weight relative to 1 part by weight of profluthrin, the relative volatilization rate with respect to profluthrin is 2.0 × 10 ^{3 to} 4.0 × 10 ³ , and the viscosity at 20 ° C. is 3 An ether compound having a molecular weight of 100 to 150;
An insect repellent composition comprising:

  According to the present invention, an insect repellent having an excellent effect can be provided.

The insect repellent of the present invention is applied to a sheet carrier,
(A) profluthrin,
(B) 0.3 to 1.3 parts by weight relative to 1 part by weight of profluthrin, the relative volatilization rate to profluthrin is 0.7 to 1.3, the viscosity at 25 ° C. is 20 to 50 cP, and the molecular weight is An aliphatic carboxylic acid alkyl ester compound of 250 to 350;
And (C) 0.5 to 1.3 parts by weight relative to 1 part by weight of profluthrin, the relative volatilization rate with respect to profluthrin is 2.0 × 10 ^{3 to} 4.0 × 10 ³ , and the viscosity at 20 ° C. is 3 An ether compound having a molecular weight of 100 to 150;
The insect repellent composition containing is carried.

  The relative volatilization rate with respect to profluthrin in the present invention is the weight of the test substance carrier that accompanies volatilization under certain conditions of the test substance carrier in which the substance to be measured (hereinafter referred to as test substance) is carried on a sheet carrier. Calculated from the ratio of the volatilization rate constant obtained from the change with time of the volatilization rate and the volatilization rate constant obtained from the change over time of the weight of the profluthrin-carrying body with volatilization under the same conditions of the profluthrin-carrying body in which profluthrin is supported on the sheet carrier. be able to.

  The (A) profluthrin used in the present invention is, for example, a compound described in JP-A-2005-295810, and a commercially available product can be used as it is.

  (B) As an aliphatic carboxylic acid alkyl ester compound having a relative volatilization rate to profluthrin of 0.7 to 1.3, a viscosity at 25 ° C. of 20 to 50 cP, and a molecular weight of 250 to 350 used in the present invention. Examples include citric acid alkyl esters such as triethyl citrate.

(C) An ether compound having a relative volatilization rate of 2.0 × 10 ^{3 to} 4.0 × 10 ³ , a viscosity of ³ to 10 cP at 20 ° C., and a molecular weight of 100 to 150, which is used in the present invention. For example, 3-methoxy-3-methyl-1-butanol may be mentioned.

In the insect repellent of the present invention, the sheet carrier has a relative volatilization rate of 0.7 to 1 of 0.3 to 1.3 parts by weight with respect to 1 part by weight of (A) profluthrin and (B) profluthrin. An aliphatic carboxylic acid alkyl ester compound having a viscosity at 25 ° C. of 20 to 50 cP and a molecular weight of 250 to 350; and (C) 0.5 to 1.3 weights relative to 1 part by weight of profluthrin. Insect repellent composition containing an ether compound having a relative volatilization rate of 2.0 × 10 ^{3 to} 4.0 × 10 ³ , a viscosity at 20 ° C. of ³ to 10 cP, and a molecular weight of 100 to 150 It can be manufactured by supporting a product.

In the present invention, the insect repellent composition has a relative volatilization rate with respect to profluthrin of 0.3 to 1.3 parts by weight with respect to 1 part by weight of (A) profluthrin and (B) profluthrin as long as the effects of the present invention are not impaired. An aliphatic carboxylic acid alkyl ester compound having a viscosity of 0.7 to 1.3, a viscosity at 25 ° C. of 20 to 50 cP, and a molecular weight of 250 to 350; and (C) 0.5 to 1 part by weight of profluthrin. -1.3 parts by weight of an ether compound having a relative volatilization rate of 2.0 × 10 ^{3 to} 4.0 × 10 ³ with respect to profluthrin, a viscosity of ³ to 10 cP at 20 ° C., and a molecular weight of 100 to 150 In addition to these, synergists for pyrethroids such as MGK264, piperonyl butoxide, sinepyrine 500, antioxidants such as BHT, 2- (2-hydroxy- - tertiary octylphenyl) benzotriazole (trade name: SUMISORB) UV absorbers such as, thymol, PCMX, Bokinbo mold agents such as OPP, may contain perfumes.

  The amount of the insect repellent composition supported on the sheet carrier can be arbitrarily set according to the shape, material, usage pattern of the insect repellent of the present invention, etc. The ratio is usually 150 to 300 parts by weight, preferably 180 to 280 parts by weight with respect to parts by weight.

  As a method for supporting the insect repellent composition on the sheet carrier, it is possible to apply the insect repellent composition evenly to the sheet carrier, but it can be carried out by a method of locally dropping at one or two or more points on the sheet carrier. In the case of this method, the insect repellent composition can be quickly diffused and supported evenly over the entire sheet carrier, and the insect repellent of the present invention can be produced efficiently. The dropping area in the case of such local dripping varies depending on the thickness of the sheet carrier, but is usually about 5 to 30% of the area of the entire plane on which local dripping is attempted.

  The material of the sheet carrier used in the present invention is not particularly limited as long as it can carry the insect repellent composition. For example, paper materials such as paperboard, filter paper, and synthetic fiber mixed paper, non-woven fabric, felt-like woven fabric, inorganic A fiber sheet or the like can be used. The insect repellent of the present invention, for example, according to the change in volatilization amount of the insect repellent composition carried by the sheet carrier described in International Patent Publication WO2003 / 052721, etc. This is particularly useful in the case of a sheet carrier having a period display function capable of visually recognizing two periods, a so-called period indicator.

  The period indicator can be constituted by, for example, a base material having liquid permeability and a display portion made of a material having a liquid permeability and a low refractive index with respect to light partially laminated on the base material. . The display unit is a fine particle having a low refractive index with respect to light (for example, amorphous silica such as synthetic amorphous silica fine powder, hydrous amorphous silicon dioxide, ultrafine hydrous silicic acid, etc.). And a binder (for example, vinyl acetate, EVA, NBR, SBR, acrylic latex, etc.) are mixed and applied to the surface of the base material. The display unit has two or more regions having different thicknesses, but each region of the display unit can have a different thickness by changing the coating amount per unit area of the display unit forming material.

  As described above, since the thickness of each region of the display unit is different, the height from the surface of the base material is different, which causes a time difference in the representation of the display in each region. On the other hand, stepwise display is possible. That is, as the contained liquid is volatilized, the region where the amount of application per unit area of the display portion forming material is larger and the height from the substrate surface is higher, the faster the liquid is transferred from the substrate. Moreover, the area | region where the application quantity per unit area of a display part formation material is the smallest and the lowest from a base material is displayed the latest. Therefore, when adopting the period indicator as the sheet carrier in the present invention, at least two periods of the volatilization and the end point can be visually recognized according to the change of the volatilization amount of the insect repellent composition.

Next, a specific example of the period indicator is shown. FIG. 1 is a front view of a period indicator, and (i) to (iv) in FIG. 2 are an insect repellent A in which the insect repellent composition is supported on the period indicator until the volatilization of the insect repellent composition is completed. The progress of the display status of each area of the display unit is shown.
The period indicator a is a display portion forming material comprising a fine powder of a white inorganic pigment and a binder on the surface of the base material 10 colored purple, which is liquid permeable and has a low refractive index with respect to light when the liquid is contained. A white display portion composed of regions 11, 12, and 13 is provided by partially applying. The area 11 is composed of a large triangle, the area 12 is composed of a small triangle, and the area 13 is composed of characters “complete”. Since the application amount per unit area of the display portion forming material is decreased in the order of the regions 11, 12, and 13, the height from the substrate surface is decreased in the order of the regions 11, 12, and 13.

FIG. 2 shows an insect repellent A using a period indicator a shown in FIG. 1 as a sheet carrier and carrying a sufficient amount of an insect repellent composition for concealing the display of the regions 11, 12, and 13. Represents the state of display at each stage of volatilization.
FIG. 2 (i) shows the insect repellent A immediately after production. In this state, the regions 11, 12, and 13 are substantially unrecognizable.
FIG. 2 (ii) shows the insect repellent A in a state where the insect repellent composition is slightly volatilized from the state of FIG. 2 (i). In this state, the region 11 having the largest area and the application amount of the display portion forming material can be recognized as a light purple triangle having a small color contrast with the color of the surface of the base material 10, and the other regions 12 and 13 are Cannot recognize.
FIG. 2 (iii) shows the insect repellent A in a state where volatilization of the insect repellent composition further proceeds from FIG. 2 (ii). In this state, the region 11 having a slightly higher contrast with the color of the base material surface is recognized, and the region 12 is recognized as a light purple triangle having a small contrast with the color of the base material surface. The region 13 cannot be recognized.
FIG. 2 (iv) shows the insect repellent A in a state in which the volatilization of the insect repellent composition further proceeds from FIG. In this state, the large triangle in the region 11 and the small triangle in the region 12 are clearly displayed in almost white, and the “complete” character, which is the light purple region 13, is recognized.
When volatilization further progresses and the insect repellent composition almost disappears, the regions 11, 12, and 13 all increase in whiteness and exhibit the same whiteness as the display portion of the indicator a before the insect repellent composition is supported. .

In the insect repellent A of the present invention, the start of coloration of the display portion at each stage is when a gap starts to be generated near the surface of the display portion, but the lower portion of the display portion is still filled with liquid. The concealability of the part is low, and the color of the substrate surface is lightened. For example, when the base material is purple, the purple color becomes pale and light purple. As the volatilization of the insect repellent composition progresses, even when the void generation spreads to the lower part of the display part, as long as liquid is contained in the base material, the supply to the display part will not be interrupted, so the display part is completely volatilized The gap gradually increases until the color of the display (whitening) gradually progresses. As the amount of application on the display unit increases, the total amount of voids in the display unit increases and the amount necessary to fill the voids in the display unit also increases, so when the content of the insect repellent composition in the base material decreases due to volatilization The shortage of supply comes early and the display starts earlier.
Therefore, the present invention is different from the application amount or the application area of the display portion forming material and the combination thereof in that the display timing of the display is different, and various displays are possible. It is possible to provide an insect repellent having a period indicator function.

  The insect repellent A in the present invention can be used as it is by being placed in a clothing pest habitat or a clothing pest invasion site, etc., but stored and used in a plastic container or the like in a diffusible state. be able to.

For example, as shown in FIGS. 3 to 5, an insect repellent A, which is a sheet carrier (period indicator a) carrying an insect repellent composition, using a storage container 20 having a front plate 21 and a back plate 22. Can be stored and held.
The front plate 21 and the back plate 22 of the storage container 20 are net-like plates that are breathable in the thickness direction. And it can be opened and closed by the front board 21 and the back board 22, and the insect repellent A (period indicator a) can be taken in and out in the open state shown by FIG. In the closed state shown in FIGS. 3 and 4, the insect repellent A can be held by sandwiching the insect repellent A between the front plate 21 and the back plate 22.

  The opening / closing operation is performed by bending the connection portion 25 formed between the front plate 21 and the back plate 22. Moreover, the latching | locking part 26 which maintains a closed state is formed in the opposite side to the connection part 25, and maintains a closed state using the latching | locking part 26. FIG.

In the state in which the insect repellent A is held, the insect repellent composition carried on the period indicator a of the insect repellent A can be volatilized, and the insect pests and the like are controlled by placing it in the space where the clothes are stored. can do.
A hook 23 is formed on the front plate 21 of the storage container 20 and can be placed by hooking.

  The insect repellent A is arranged so that each region 11, 12, 13 of the display unit is on the front plate 21 side. And the opening part 27 is formed in the front plate 21 of the storage container 20 in the position corresponding to each area | region 11,12,13, and display of each area | region 11,12,13 is shown in FIG. Can be seen from the opening 27, and changes in the respective regions 11, 12, and 13 can be confirmed as they are.

Moreover, the storage container 30 as shown in FIG.6 and FIG.7 can be used. The storage container 30 has a dish 31 having a recess 32 and a flange 33 and a lid 35 that is in close contact with the flange 33, and the insect repellent A (period indicator a) is stored in the recess 32. Can do.
And the opening 36 is formed in the recessed part 32, volatilization of an insect-proof composition can be confirmed from the opening 36, and the confirmation from the outside of each area | region 11, 12, 13 of a display part is possible.

The size of the insect repellent A stored in the storage container 30 is larger than the size of the opening 36, and the insect repellent A does not escape from the opening 36 during use.
In addition, when storing the insect repellent A, which is the period indicator a carrying the insect repellent composition, in the storage container 30, it is performed before the lid member 35 is brought into close contact.

  The storage containers 20 and 30 described above are made of resin, but the type of resin is not limited. Moreover, you may form the storage containers 20 and 30 using materials other than resin.

Furthermore, after production, in order to prevent volatilization of the insect repellent composition before the start of use, it can be sealed using a sealing material.
And the sealing by this sealing material is performed by covering with a sealing material after storing in the form to be used, ie, the container which has air permeability like the above-mentioned storage containers 20 and 30. FIG. Specifically, the period until use for clothing insect repellent, etc. is sealed and stored with a sealing material such as plastic film, aluminum laminate, etc., and when used, it is opened by removing the sealing material, and this opened state Thus, clothing pests can be controlled by installing them in clothing pest habitats or clothing pest infestations, such as moths, koigas, and pine beetles. Examples of such habitats of clothing pests or clothing pests include storage spaces such as clothes cases, Japanese dance drawers, Western dances and closets.
In addition, when an insect repellent is disposed at such an intrusion place, it is desirable that the effective amount of the insect repellent component is volatilized. Specifically, by installing one or two or more insect repellents of the present invention in an amount of about 100 to 300 mg in terms of the amount of profluthrin supported per 1 m ^{3 of the} storage space, insect repellent for 6 months or more. The effect can be demonstrated.

  Hereinafter, the present invention will be specifically described with reference to Examples such as Production Examples and Test Examples, but the present invention is not limited only to these Examples.

  First, the manufacture example of the insect repellent of this invention is shown.

Production Example 1
In the vicinity of the center of the period display surface of the sheet carrier (47 mm × 15 mm, thickness 1 mm, weight 0.36 g) having a period display function capable of visually recognizing the three periods of the shape shown in FIG. 1 and FIG. Insecticide composition in which triethyl acid and 3-methoxy-3-methyl-1-butanol are mixed (mixing ratio (weight ratio) profluthrin: triethyl citrate: 3-methoxy-3-methyl-1-butanol = 2 1: 1.25) By dropping 66.5 mg, the present insect repellent (1) was obtained in which the display of the regions 11, 12 and 13 was concealed and the entire period display surface exhibited the color of the substrate.

Production Example 2
6 and FIG. 7, the plate material 31 (made of polypropylene) of the storage container 30 is placed so that the flange 33 is on the upper side, and the three times of the shape shown in FIG. 1 and FIG. A sheet carrier (47 mm × 15 mm, thickness 1 mm, weight 0.36 g) having a display function for a possible period was put so that each region 11, 12, 13 of the display unit was on the lower side.
Next, profluthrin, triethyl citrate and 3-methoxy-3-methyl-1-butanol were mixed in the vicinity of the center on the opposite side (upper surface) of each region 11, 12, 13 of the display part of the sheet carrier. Insect repellent composition (mixing ratio (weight ratio)) 75 mg of profluthrin: triethyl citrate: 3-methoxy-3-methyl-1-butanol = 1: 1: 0.7 was added dropwise. And by this dripping, the display of the area | regions 11, 12, and 13 is concealed, and the whole period display surface will be in the state which exhibits the color of a base material.
Furthermore, the lid material 35 (polypropylene (inner layer) / polyethylene terephthalate (outer layer) two-layer film) was covered from the upper side of the collar portion 33 and heat-sealed to obtain the insect repellent (2) of the present invention in a storage container.

Production Example 3
Drops having a suitable interval between the period display surfaces of the sheet carrier (120 mm × 40 mm, thickness 1 mm, weight 2.54 g) having a period display function capable of visually recognizing the three periods of the shape shown in FIGS. Insect repellent composition obtained by mixing profluthrin, triethyl citrate and 3-methoxy-3-methyl-1-butanol at 5 positions (mixing ratio (weight ratio) profluthrin: triethyl citrate: 3-methoxy-3-methyl-1 -Butanol = 16:20:19) A total of 550 mg was added dropwise. And the display of the area | regions 11, 12, and 13 was concealed, and the whole period display surface was in the state which exhibits the color of a base material. By storing this in the storage container 20 shown in FIGS. 3 to 5, the insect repellent (3) of the present invention contained in the storage container was obtained.

  The test example shows the visual effect when the insecticide of the present invention is an insecticide having a period display function.

Test Example The insect repellent (1) of the present invention obtained in Production Example 1 was left in a constant temperature bath at 40 ° C., and the change in the display surface over time was observed over 4 days. Later, after region 12 and 6 days later, the region 13 turned white in order, and the remaining amount of the insect repellent composition carried on the insect repellent (1) of the present invention was easily visible.

The relative volatilization rate was measured and confirmed as follows.
A drug-impregnated paper was prepared by impregnating about 200 mg of profluthrin into a 25 mm × 50 mm filter paper (No. 2 filter paper: manufactured by Toyo Filter Paper Co., Ltd.). The drug-impregnated paper was allowed to stand at room temperature, and the weight of the drug-impregnated paper was measured after a predetermined time, thereby calculating the profluthrin residual rate in the drug-impregnated paper. From the change with time of the profluthrin residual rate until 18 days after the start of the test, the volatilization rate constant a of profluthrin in the test was determined by the following equation (1) (2 iterations).
Y = Exp (−aT) (Formula 1)
Y: Profluthrin remaining rate after the elapse of time T a: Volatilization rate constant T: Time for leaving the agent-impregnated paper

A similar test was performed using triethyl citrate (viscosity at 25 ° C .: 35.2 cP) and 3-methoxy-3-methyl-1-butanol (viscosity at 20 ° C .: 6.2 cP) instead of profluthrin. The relative volatilization rate for each profluthrin was determined from the ratio of each volatilization rate constant and the volatilization rate constant of profluthrin.
As a result, the relative volatilization rate with respect to profluthrin was 1.0 for triethyl citrate and 2.6 × 10 ³ for 3-methoxy-3-methyl-1-butanol.

It is a model front view of the period indicator which is an example of the sheet | seat carrier of the insect repellent of this invention. (i)-(iv) is the model which shows the state from which the insect repellent composition volatilizes and the each area | region of a display part develops in steps from the time of carrying an insect repellent composition on the period indicator shown in FIG. It is a top view. It is a front view which shows the storage container which accommodates the insect repellent of this invention. It is the front view which showed the state after use of the storage container which accommodates the insect repellent shown in FIG. It is the front view which showed the open state of the storage container shown in FIG. It is a front view which shows the state after use with another storage container which accommodates the insect repellent of this invention. It is sectional drawing which showed the XX part in FIG.

Explanation of symbols

11, 12, 13 Area 20, 30 Storage container A Insecticide a Period indicator

Claims (6)

On the sheet carrier,
(A) profluthrin,
(B) 0.3 to 1.3 parts by weight relative to 1 part by weight of profluthrin, the relative volatilization rate to profluthrin is 0.7 to 1.3, the viscosity at 25 ° C. is 20 to 50 cP, and the molecular weight is An aliphatic carboxylic acid alkyl ester compound of 250 to 350;
And (C) 0.5 to 1.3 parts by weight relative to 1 part by weight of profluthrin, the relative volatilization rate with respect to profluthrin is 2.0 × 10 ^{3 to} 4.0 × 10 ³ , and the viscosity at 20 ° C. is 3 An ether compound having a molecular weight of 100 to 150;
An insect repellent, comprising an insect repellent composition containing   The insect repellent according to claim 1, wherein the total loading ratio of profluthrin, the aliphatic carboxylic acid alkyl ester compound and the ether compound is 150 to 300 parts by weight with respect to 1000 parts by weight of the sheet carrier.   The sheet carrier is a sheet carrier having a period display function capable of visually recognizing at least two stages of volatilization and end point according to a change in volatilization amount of the insect repellent composition carried on the sheet carrier. Item 3. An insect repellent according to item 1 or 2.   The insect repellent according to any one of claims 1 to 3, wherein the aliphatic carboxylic acid alkyl ester compound is triethyl citrate and the ether compound is 3-methoxy-3-methyl-1-butanol.   A pest control method for clothing pests, wherein the insect repellent according to any one of claims 1 to 4 is disposed at a place where clothing pests inhabit or clothing pests invade, and an effective amount of the pest control component is volatilized. . (A) profluthrin,
(B) 0.3 to 1.3 parts by weight relative to 1 part by weight of profluthrin, the relative volatilization rate to profluthrin is 0.7 to 1.3, the viscosity at 25 ° C. is 20 to 50 cP, and the molecular weight is An aliphatic carboxylic acid alkyl ester compound of 250 to 350;
And (C) 0.5 to 1.3 parts by weight relative to 1 part by weight of profluthrin, the relative volatilization rate with respect to profluthrin is 2.0 × 10 ^{3 to} 4.0 × 10 ³ , and the viscosity at 20 ° C. is 3 An ether compound having a molecular weight of 100 to 150;
An insect repellent composition comprising:

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