JPS6248764A - Resin composition for mothproofing - Google Patents

Abstract

PURPOSE:A composition, containing an ultraviolet light absorber and odoriferous material for inhibiting insects in a base material, having excellent mothproofing effect on excluding insects attracted to visible light and used by coating covers of lightings, etc. CONSTITUTION:A composition containing an ultraviolet light absorber and odoriferous material for inhibiting insects in a base material. A coating material containing a thermoplastic resin, natural resin and/or syntheric resin, e.g. natural rubber and/or synthetic rubber, as a coating film component is used as the base material. An acrylonitrile is preferred for the ultraviolet light absorber, and used in an amount of 0.01-10wt% based on the base material. An odoriferous material, e.g. WASABI (Japanese horseradish) or lemon, is preferred for the insect inhibiting odoriferous material and used in an amount of 0.1-20wt% based on the base material.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Field of Application The present invention is applicable to insect repellent sheets, films, nets, punched sheets, etc. , relates to an insect repellent resin composition used for applications such as coating an object to be painted such as a lighting lamp to form an insect repellent coating on the surface of the object.

(b) Conventional technology Insects are visible in the ultraviolet range, so they are attracted to ultraviolet light and invade houses.

In addition, for agricultural purposes, ultraviolet cut films are attracting attention for their ability to suppress diseases, promote the growth of cultivated plants, accelerate photosynthesis, and save energy, as well as their insect repellent effects.

Conventionally, as an ultraviolet ray canting film for insect repellent, it has been known to mix an ultraviolet absorber with a composite IR resin and form a film, which is then used as a film for lighting lamp covers (Japanese Patent Application Laid-Open No. 58-47058).

(c) Problems to be Solved by the Invention However, when a heat-shrinkable tube is formed from this cover film for lighting lamps, and a fluorescent lamp for insect trapping is covered with the tube and installed outdoors in the summer, the insect trapping effect is It wasn't enough.

(d) Means for solving the problem The present inventors believe that since insects are photosensitive to some visible light, a sufficient effect cannot be expected from the combination of an ultraviolet absorber and a synthetic resin alone. Based on the idea of
found that odorous substances (for insect inhibition) are effective,
This has led to the completion of the present invention.

That is, the present invention is characterized in that the base material contains an ultraviolet absorber and an odor substance for inhibiting insects.

The present invention will be explained in detail below.

The present invention is characterized in that the base material contains an ultraviolet absorber and an insect-inhibiting odor substance.

The base material used in the present invention is not particularly limited as long as it can stably contain the ultraviolet absorbing layer and insect-inhibiting odor substances described below, such as thermoplastic resin, thermosetting resin, or rubber M. '4? can be mentioned.

Examples of the thermoplastic resin include polyvinyl chloride, polyvinylidene chloride, polyethylene, polypropylene, polystyrene, polyethylene terephthalate, polybutylene terephthalate, polyamide, polyhexamethylene adipamide, polycarbonate, polyacrylate, etc. Among these, soft polyvinyl chloride, polyethylene, polyethylene terephthalate, and polycarbonate are particularly preferred from the viewpoint of moldability.

Examples of the thermosetting resin include polytetrafluoroethylene, epoxy resin, petroleum resin, alkyd resin, and 7-run resin. Among these, epoxy resin is particularly preferred from the viewpoint of moldability.

The above rubbers include natural rubber and synthetic rubber. Synthetic rubbers include butadiene rubber, silicone rubber, polyisoprene rubber, chloroprene rubber, polyethylene-propylene rubber, butyl rubber, inbutylene rubber, styrene-butadiene rubber, styrene-isoprene-styrene block copolymer rubber, acrylic rubber, acrylonitrilutazo Examples include en rubber, chlorosulfethyl polyethylene rubber, polysulfide rubber, and the like.

Further, other base materials used in the present invention include polyvinyl alcohol, regenerated cellulose, cellulose acetate, and the like.

Among these base materials, those using thermoplastic resins are the most preferred because they have excellent production processability and have a wide range of uses.

Further, as the ultraviolet absorber used in the present invention, salicylic acids such as phenyl salicylate, pt-butylphenyl salicylate, and ρ-octylphenyl salicylate, 2-hydroxy-4-methoxypenzophemene,
2-Hydroxy-4-〇-octoxybenzo7-yonon,
4-dobushimixi-2-human axybenzophene/benzobenzoene, etc., 2-(2'-human tffxy-5
'-Methyl-phenyl)benzotriazole, 2-(2
゛-hydroxy-3',5'-tutashabutyl)7
Enyl-5-talolopensotriazole, 2-(2'-
Hydroxy-3'-t-butyl-5''-methyl-phenyl)-5-chloro-benzotriazole, 2-(2'-
Hydroxybenzotriazoles such as hydroxy-4'-rooctoxy-phenyl)benzotriazole, 2
-Ethyl-hexyl-2-cyano-3,3'-diphenylacrylate, ethyl-2-cyano-3,3-diphenylacrylate, resorcinol-monobenzoate, 2゜4-di-t-butylphenyl-3,5- G-shi =
Examples include 7-crylonitriles such as butyl-4-hydroxybenzoate, nickel complex salts such as nickel bis(octylphenyl) sulfide, and monobenzoic acids.
m) Most preferred are acrylonitriles, which have good compatibility with the base material used.

The amount of the ultraviolet absorbing layer added varies depending on the type, but is generally 0.01 to 10% by weight based on the base material.
If it is less than 0.01% by weight, the ultraviolet absorption effect will be small, while if it exceeds 10% by weight, it will adversely affect the physical properties of the base material, which is not preferable. A particularly preferable range for the amount of the ultraviolet absorber added is 0.1
~5 weight 1%.

In addition, the odor substances used in the present invention to inhibit insects are volatile substances generated from wasabi, karan, garlic, leek, lemon, apple, onion, and persimmon peel extracts, and in particular, wasabi and lemon. The membrane is also preferable for practical purposes since it is superior in terms of odor substances.

In the case of wasabi, there are 1. Allyl isocyanate has been confirmed, and in lemon peel, carbon numbers such as octanal, nonanal, and decanal are C8 to C1.
Most preferred are aliphatic aldehydes having a CHO group at o.

The amount of the odorous substance added varies depending on its type, but it is preferably in the range of 0.1 to 20% by weight based on the base material; less than 0.1% by weight has no effect;
If it exceeds 0% by weight, it is not preferable because it adversely affects the physical properties of the base material.

The insect repellent resin composition comprising the above-mentioned base material, ultraviolet absorber, and insect-inhibiting odor substance may optionally contain an antistatic agent,
A matting agent may be added for the purpose of adjusting transmitted light and/or preventing light reflection.

As the antistatic agent, pt-acylphenol lead,
Anionic antistatic agents such as pentaalkyl tripolyphosphate, triethanolamine salt of polystyrene sulfone, polyoxyethylene alkylamine, 1-hydroxyethyl-2-alkylimidacylinamine ethylene oxide adduct, quaternary ammonium salt, etc. Cationic antistatic agent, furkylphenol ethylene oxide adduct,
Nonionic antistatic agents such as alcohol ethylene oxide adducts, glycerin esters of stearic acid, fatty acid amide derivatives, amphoteric antistatic agents such as alanine type metal salts, imidacilline type metal salts, carboxylic acid type metal salts, organic boron compound type Examples include antistatic agents.

The amount of these additives added is 0°01 to 1% relative to the base material.
Preferably, it is 0% by weight.

The above base material, ultraviolet absorber, and insect repellent odor substance are uniformly mixed using a mixer or mixer, and the thus obtained insect repellent resin composition can be applied to sheets, films, nets, etc. by conventional methods. It is formed into molded objects such as paper, punched sheets, and even cloth. In this case, when molding processability is poor, it is preferable to add a compounding agent that improves molding processability.

If the molded body is a sheet (film), its thickness is 3
It is preferable that the thickness is about ~500 μm; if it is less than 3 μm, it will not have enough strength to withstand practical use, while if it is more than 500 μm, it will become hard and difficult to handle, and it will be uneconomical.
It is most desirable to set the thickness to about 300 μm.

This molded body is used as a covering material for a closed-down facility cultivation house, a tube for cutting ultraviolet rays from fluorescent lamps, and the like.

The present invention also includes an insect repellent resin composition that uses a paint as a base material and contains an ultraviolet absorber and an insect-inhibiting odor substance in the paint.

This will be explained in detail below.

This base material (paint) is made by dissolving or dispersing coating film components such as synthetic resins such as the above-mentioned thermoplastic resins and thermosetting resins, and rubbers such as natural rubber and synthetic rubber in an organic solvent or water. Examples include those in which coating film components such as natural resins, drying oils, semi-drying oils, or cellulose derivatives are dissolved in organic solvents or dispersed in water.

Of these, particularly important are vinyl chloride resins, thermoplastic acrylic resins, vinyl chloride-vinyl acetate copolymers,
Vinylidene fluoride resin, cellulose resin, polystyrene resin, chlorinated polypropylene, polyvinyl alcohol, polyvinyl acetal, polyvinyl butyral, polyacrylate resin, polyamide resin, high molecular polyester, vinyl acetate resin, styrene-butanoene resin, Oil-based paints made by dissolving thermoplastic resins such as polyacetal 1-5fff fat, polyurethane, nitrocellulose, cellulose acetate butyrate in organic solvents, or water-based paints dissolved or dispersed in water are easy to handle and workability is improved. Particularly preferred are those in which various rubber components are used or mixed in order to improve flexibility and eliminate stickiness at room temperature after the coating film is formed.

In this case, the rubber components used include chlorinated rubber, rubber-like copolymers of acrylic esters and acrylonitrile, rubbers with a polymethylene-type saturated main chain such as polyisobutylene, chloroprene, isoprene, and acrylonitrile-based rubbers. Examples include rubbers having unsaturated carbon bonds in the main chain, such as butanoene rubber.

The above-mentioned ultraviolet absorber and insect-inhibiting odor substance are blended into the base material.

In this case, the amount of the ultraviolet absorber added is desirably in the range of o, oi to 10% by weight, preferably in the range of 0.1 to 5% by weight, based on the coating film components in the base material. The amount of odorous substances added is 0.1 to 0.1 to the coating film components in the base material.
The content is preferably 20% by weight.

゛An antistatic agent may be added to this insect repellent resin composition if desired. In addition to the above-mentioned antistatic agents, examples of the antistatic agents include anionic antistatic agents such as alkyl sulfonates and polyester derivatives, cationic antistatic agents such as acrylic ester derivatives, acrylic acid amide derivatives, quaternary ammonium salts, and vinyl ether derivatives. antistatic agent,
Nonionic antistatic agents such as ethylene oxide derivatives and acrylic esters, amphoteric antistatic agents of alkyl betaine type,
Alkyloyl(C6-C2,)ami7brobyldimethyl-2'-hydroxyammonium is mentioned.

The amount of the antistatic agent added is preferably in the range of 0.01 to 10% by weight based on the upper air coating film components.

Insect repellent resin composition (
Paint) is a synthetic resin or metal sheet or film (i
), molded bodies such as metal or synthetic a1mw nets or punched sheets, and objects to be coated such as lighting lamps, thereby forming an insect repellent coating on the surface of the objects to be coated. In this case, the thickness of the coating film is preferably in the range of 3 to 200 μm; if the thickness of the coating film is less than 3 μm, it is difficult to form a uniform coating film, while on the other hand, if the thickness of the coating film exceeds 200 μm, This is undesirable because it limits the insect repellent effect and may deform the object to be coated.

The insect repellent coating thus obtained is used, for example, as a covering material for greenhouses for agricultural cultivation, illumination lights (which do not attract insects), and the like.

(e) Effect Insects have phototropism not only in the ultraviolet AifJt range but also in a part of visible light. For example, it is said that the visually sensitive wavelength range of agricultural pests is about 250 to 650 r+m.

For this reason, simply incorporating an ultraviolet absorber into a synthetic resin film or sheet does not provide a sufficient insect repellent effect.

However, in the insect repellent at fat composition of the present invention, an ultraviolet absorber and an insect-inhibiting odor substance are added to the base material, and the synergistic effect of the ultraviolet absorber and the odor substance exhibits an extremely excellent insect repellent effect. It is.

(r) Examples Hereinafter, the present invention will be explained in detail based on Examples, but the present invention is not limited thereto.

Example 1 After adding 5 parts by weight of ethyl-2-cya/-3,3-diphenylacrylate represented by the following general formula (I) as an ultraviolet absorber to 100 parts by weight of polyethylene terephthalate as a base material, 100 parts by weight of this mixture 5 parts by weight of octanal C octylaldehyde, an odor substance for inhibiting insects, was added to the parts by weight and mixed uniformly to obtain an insect repellent FfI folding composition.

This insect repellent resin composition was formed into a film by a calendaring method to form an insect repellent film having a thickness of 100 μm.

As a result of measuring the light transmittance of the insect repellent film using a self-recording spectrophotometer, the light transmittance in the light wavelength range of 200 to 100 nm was 0.1% or less, which was an extremely good result.

The results of the insect repellent test for this insect repellent film are shown in Table 1.

Comparative Example 1 The same material as Example 1 was used except that the odor substance octanal (octylaldehyde) was removed.

Example 2 The base material was 30 parts by weight (solid content) of acrylic rubber (molecular weight approximately 500,000) containing 15% by weight of acrylonitrile containing a small amount of 2-hydroxymethacrylate, 90% by weight of vinyl chloride, and acetic acid. A mixture of 70 parts by weight (solid content) of a vinyl copolymer (degree of polymerization 750) consisting of 10% by weight of vinyl was used as the coating component, and this coating component was dissolved in methyl ethyl ketone (coating component 25% by weight). To this, 5 weight of ethyl-2-cyano-3,3-diphenylacrylate represented by the following general formula (1), which is an ultraviolet absorber, was added to 100 parts by weight of the above coating film component and mixed uniformly. .

Next, 5 weights of octanal (octylaldehyde), which is an odor substance, was added to 100 weights of the coating film components of this mixture, and the mixture was stirred and mixed.

Next, to 100 parts by weight of the above coating film component, 1 part of dodecaroylamine/propylzmethyl-2'-hydroxyammonium 5 parts as an antistatic agent was added and mixed uniformly to form a paint-type insect repellent resin composition. I got it.

This insect repellent resin composition was coated on one side of a biaxially stretched polyethylene tereate film with a thickness of 50 μl using a roll coater, and dried in an oven at 100 to 110°C for 2 minutes to reduce the overall thickness. A colorless and transparent insect repellent film was obtained at 75 μI.

When the light transmittance of the insect repellent film was measured using a self-recording spectrophotometer, the transmittance of light in the wavelength range of 200 to 410 nm was 0.1% or less, which was an extremely good result.

Moreover, the surface of this insect repellent m film was free of stickiness, a lemon odor was perceived as an odor coming from the coating surface, and it had excellent antistatic properties.

The results of the insect repellent test for this insect repellent film are shown in Table 1.

Comparative Example 2 A coating composition with the same formulation conditions as in Example 2 except for octanal (octylaldehyde) as an odor substance was applied to the same film as in Example 2 and dried. A film with a coating formed on one side was used.

Example 3 A linear high molecular weight saturated polyester resin (60% by weight of terephthalic acid/4% by weight of isophthalic acid) which was internally plasticized as a base material.
Copolymer of 0% by weight and ethylene glycol, molecular weight 20
．． 000 to 25,000, softening point 123°C) (coating film component) (mixed solvent of 80 parts by weight of doluol and 20 parts by weight of methyl ethyl ketone). 75% by weight of the polyfunctional isocyanate compound represented by formula (n)
A coating solution containing 1 part by weight of ethyl acetate solution (solid content) was used.

To this solution, 2-(2'-hydroxy-3'', 5' t-tert-butyl) phenyl-5-chlorobenzotriazole represented by the following general formula (IIN) was added as an ultraviolet absorber to the linear saturated polyester resin at a solid content of 100 parts by weight. 3 parts by weight per part were added and mixed uniformly.

Next, allyl isothiocyanate (C
3 parts by weight of H□=CHCH2NC3) were added and mixed uniformly.

Next, in order to prevent stickiness of the coating film surface after coating film formation, 3 parts by weight of amorphous silicon dioxide (97% or more silicon oxide) was added to 100 parts by weight of the coating film components and mixed uniformly. A paint-type insect repellent resin composition was obtained.

A zinc woven wire mesh (thickness: 0.55 + NO, wire diameter: 30, mesh size: 16 meshes) used as an insect repellent net was immersed in the thus obtained insect repellent resin composition, and immersed on both sides thereof. Apply the coating and heat in the oven at 100-110°C for 5 minutes.
Drying was carried out for a minute to obtain an insect repellent wire mesh having a solid content of 20 g/ω2.

The wire mesh of this example had a sticky surface (wasabi odor was felt from both sides as an odor coming from the coating surface).

Table 1 shows the results of the insect repellent test for this insect repellent wire mesh.

Comparative Example 3 A sample was prepared using the same conditions as in Example 3 except for allyl inthiocyanate as an odor substance.

A polyethylene terephthalate film with a blank thickness of 100 μm was used.

(Leaving space below) Insect control experiment> A commercially available insect attractor, Mushibon MP-201 manufactured by Clinchitsuku Co., Ltd., was used in a paddy field from the building of Shinko Kagaku Kogyo Co., Ltd.'s Maruoka factory in Funayose, Maruoka-cho, Sakai-gun, Fukui Prefecture. It was set up towards. As an insect-attracting lamp, the film (sheet) of each example and each comparative example was wrapped around the entire surface of the light source around an FL20sBL (20Wl lamp) with a specified 365 nm light beam, and the lamp was heated in the summer (temperature 25-50℃, humidity 60-60℃). 80%) at 4 p.m.
to 8 a.m. for 16 hours and 7 hours.
) were collected and the number of captured insects was counted.

From Table 1, it is recognized that those using the insect repellent resin composition of the present invention have extremely superior effects compared to the comparative examples.

In particular, the captured insects of the blank and Comparative Examples 1 to 3 contained 1 to 3% of large moths classified as Lepidoptera, and it was recognized that the difference in insect repellent effect was even clearer.

(g) Effects of the Invention The insect repellent composition of the present invention has a base material containing an ultraviolet absorber and an odor substance for inhibiting insects. The action of the substance also eliminates insects that have been attracted by visible light, and as a result, it exhibits an extremely excellent insect repellent effect, making it extremely useful.

Claims (4)

[Claims] (1) An insect repellent resin composition characterized in that the base material contains an ultraviolet absorber and an insect-inhibiting odor substance. (2) The insect repellent resin composition according to claim 1, wherein the base material is a thermoplastic resin. (3) The insect repellent resin composition according to claim 1, wherein the base material is a paint whose coating component is a natural resin and/or a synthetic resin. (4) The insect repellent resin composition according to claim 1, wherein the base material is a paint containing natural rubber and/or synthetic rubber as a coating component.