JPH0267202A - Mothproofing molded product - Google Patents

Abstract

PURPOSE:To obtain a mothproofing agent excellent in residual effectiveness by tableting inorganic cellular microcapsules enclosing a repellent, such as linalool or citronellol, as a core substance, together with an excipient or mixing the repellent with a thermoplastic or thermosetting resin and molding the resultant mixture. CONSTITUTION:A mothproofing molded resin product obtained by mixing in organic cellular microcapsules enclosing a repellent (e.g. linalool, geraniol, men thol, citronellol or alpha-brached alkylphenol) as a core substance with a thermo plastic resin (e.g. ethylene vinyl acetate copolymer or polyvinyl chloride) or thermosetting resin (e.g. urea or epoxy resin) at (1-50):100 weight ratio and molding the resultant mixture. Alternatively, the above-mentioned microcapsules, together with an excipient, are tableted to afford a mothproofing molded prod uct. The aforementioned mothproofing molded product is effective against cock roach, etc., and grain insect pests, such as Tribolium castaneum Herbst or Plodia interpunctella Hubner, without a fear of scattering due to the molded product.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application] The present invention relates to a molded article that exhibits a remarkable repellent effect on sanitary pests such as cockroaches, ants, and slugs, and on grain voiceworms such as the stag beetle, the snail weevil, and the adzuki bean weevil.

More specifically, the present invention relates to a molded product containing an iridium-free porous microphone U capsule containing a repellent as a core material.

[Prior Art 1] Currently, there are approximately 4,000 species of cockroaches distributed throughout the world, mainly in tropical regions, and most of them live outdoors. Among them, domestic cockroaches in Japan include German cockroaches, Japanese cockroaches, Japanese cockroaches, American cockroaches, and several other cockroaches. These cockroaches are not only food pests, but also pests that spread diseases and should be exterminated for sanitary reasons, along with house flies. These cockroaches, which have the tendency to live in groups due to their aggregation pheromones, are omnivorous insects that gather and hide in crevices where they can obtain water and food, and wander around in food scraps in the kitchen or kitchen garbage at night. .

In recent years, the distribution area and number of cockroaches have been increasing significantly. These phenomena have occurred because the spread of heating equipment in homes and buildings and the abundance of food have encouraged winter living and breeding activities.

Methods for controlling these cockroaches include spraying or applying highly persistent insecticides to cockroaches' hiding places and passageways, taking advantage of their nocturnal activity, or using adhesives to take advantage of their aggregation properties. Methods of capturing insects using a special container coated with insecticide, a special container containing an attractant, and a method of using an attractant and an insecticide at the same time have been researched and put into practical use.

However, the effects of controlling cockroaches by these methods are not necessarily sufficient.

Furthermore, it has been reported that a series of compounds having an allyl group with no substituent at the a-position and amino alcohols have a repellent effect on cockroaches (Japanese Unexamined Patent Publication No. 50-1
No. 05821, No. 50-58227), German cockroaches, and black cockroaches have a weak potency.

Furthermore, linalool, geraniol, pulegone, citral, terpineol, carvone, menthol, linalyl acetate, menthone, piperitone, citronellal, citronellol, nerol, and cineol exhibit remarkable cockroach repellent activity1, whereas similar compounds do not. Even cyclogeraniol, safranal, karan, binan,
It has been reported that compounds such as satin, carene, pinene, camphene, borneol rutenol, penbenol, myrtenal, pinocarvone, lintenone, camphor, chalon, and ionone have no or very weak activity (Special Publications No. 61 -15041).

[Problems to be Solved by the Invention] However, it is difficult to spray or scatter a repellent consisting of a single compound that exhibits the above-mentioned remarkable cockroach repellent activity, for example, directly onto cockroach stagnation sites, hiding places, or passageways. By methods such as applying the repellent, or placing pieces of paper or cloth containing the repellent,
When attempts are made to control the damage caused by cockroaches by causing cockroaches to escape from a certain area, there is a problem with residual effectiveness because the compound that exhibits repellent activity is lost due to volatilization.

As a means to solve this problem, there is a so-called controlled release technology, which involves encapsulating a repellent in microcapsules and releasing the repellent active ingredient to the outside at an appropriate rate. However, since microcapsules are in the form of fine powder, they are easily scattered and are inconvenient to handle, and there are also hygiene problems such as the fine powder of scattered microcapsules being inhaled and causing harm to the human body. Furthermore, fine powder micros and capsules are easily lost by scattering from the area where they are sprayed, making it difficult to predict that they will have a sufficient J repelling effect.

Historically, no resin molded product was known that was obtained by kneading microcapsules encapsulating a repellent into a resin and had a safe residual effect and repellent activity.

As a result of research to solve the above-mentioned problems, the present inventors have discovered an inorganic porous microphone 0w1) containing a repellent made of a compound that exhibits the above-mentioned remarkable cockroach-repelling activity.
A molded product obtained by compressing Pucelle into a tablet with an excipient, or a resin molded product obtained by mixing the mixture with a thermoplastic resin or thermosetting resin and molding the resulting mixture, has the repellent activity of the compound. The above-mentioned problem can be solved without impairing the effect, and furthermore, the compound is effective against not only cockroaches but also sanitary pests such as ants, slugs, and mosquitoes, and grain pests such as the black-and-white beetle, the white-spotted moth, and the bean weevil. We found that it also has a remarkable repellent effect on
The present invention has been accomplished.

[Means for solving the problem] The repellent active ingredients used in the present invention include linalool, geraniol, brevon, citral, terpineol, carvone, menthol, linalyl acetate, menthone, piperitone, citronellal, citronellol,
These are nerol, cineole, and alkylphenols with a branch at the α-position.

Examples of the carbon number of the alkyl group having a branch at the α-position include 33-methyl-6-t-butylanisole and 3,6-diitupropylphenol.

One or more of these can be used as is as a repellent against sanitary pests such as cockroaches, ants, and slugs, as well as against grain insects such as the brown beetle, the corn weevil, and the azuki bean weevil. or mixed with or adsorbed onto a suitable solid carrier (e.g. diluent, filler) and, if necessary, emulsifiers, dispersants, suspending agents, etc. It can also be used in the form of oils, emulsions, wettable powders, powders, tablets, sprays, etc. by adding spreading agents, penetrating agents, wetting agents, stabilizers, etc.For example, water, alcohol, etc. can be used as liquid carriers. - alcohols (e.g. methyl alcohol, ethyl alcohol, ethylene glycol), ketones (e.g.
aletone, methyl 1-derketone), ethers (e.g. diquaternary, tetrahydrofuran, methyl selb), aliphatic hydrocarbons (e.g. gasoline, kerosene, kerosene),
Aromatic hydrocarbons (e.g. benzene, toluene, xylene, solvent naphtha), other organic bases (e.g. pyridine), halogenated hydrocarbons (e.g. chloroform, carbon tetrachloride) l! amides (e.g. dimethylborumamide), esters (e.g. ethyl acetate, butyl acetate, glycerin esters of fatty acids), nitriles (e.g.
For example, solvents such as acetonitrile) and sulfur compounds (for example, dimedyl sulfoxide) are suitable, and one or a mixture of two or more of these are used.

As diluting and bulking agents, vegetable powders (e.g. soybean flour,
tobacco powder, wheat flour, wood flour, etc.), mineral powders (e.g.
Clays such as kaolin, bentonite, and acid clay; talcs such as talc powder and waxite powder; silicas such as diatomaceous earth and mica powder; and alumina, sulfur powder, and activated carbon are also used, and one or two of these are used. Use a mixture of the above.

In addition, as emulsifiers, spreaders, and penetrants, soaps, higher alcohol sulfuric esters, alkyl sulfonates, alkylaryl sulfonates, quaternary ammonium salts, oxyalkylamine fatty acid esters,
Polyargylene oxide type, anthro-O sorbitol type, etc. can be widely used.

Also, if necessary, add casein, gelatin, starch, Al 1! It is also possible to blend phosphoric acid, agar, CMC, polyvinyl alcohol, pine oil, bran oil, sucrose, glucose, molasses, amino acids, etc.

In addition, the repellents used in the present invention include insecticides (1-unit chlorine insecticides, organophosphorus insecticides, carbamate insecticides, heat input insecticides, etc.), synergists, other types of repellents, and fragrances. It can also be used in combination with sterilizing and anti-fungal agents.

The microcapsules used in the present invention are inorganic porous microcapsules whose walls are made of an inorganic substance. These inorganic porous microcapsules have wall materials such as alkaline earth metal carbonates such as calcium carbonate, barium carbonate, and magnesium carbonate; alkaline earth metal silicates such as calcium silicate, barium silicate, and magnesium silicate; 1M in gold such as silica, cobalt oxide, nickel oxide, etc.
JP-A-51-86075, JP-A-Sho 53-! 22
It is produced by the so-called "interfacial reaction method" described in 530 and the like. Grain system is 0.5~1501JIR
An inorganic porous microphone [I capsule] having a specific surface area of 50 to 2000 Td/g and a pore diameter of 2 to eorv on the particle surface is preferably used in the present invention. Note that for the purpose of the present invention, the capsule may be a hollow capsule or a non-hollow capsule, and therefore there is no particular restriction on the thickness of the capsule wall. Examples of such microcapsules include Gottoball (trade name) manufactured by Suzuki Yushi Kogyo Co., Ltd. In the case of a liquid repellent, microencapsulation of the repellent is carried out by impregnating inorganic porous microcapsules with a liquid repellent such as a solution or suspension, preferably at room temperature and normal pressure. Furthermore, in the case of a solid repellent, it is microencapsulated during the production of the microcapsules. The appearance of the microcapsulated repellent depends on the type of each component used in the repellent, the place of use, individual differences in sense of smell, etc. Microcapsule 10011
10 to 100 parts by weight.

The thermoplastic resin to be mixed with the inorganic porous microcapsules containing the repellent thus obtained is as follows:
Examples include ethylene-vinyl acetate co-conjugate, polyvinyl chloride, polyethylene, etc., and examples of thermosetting resins include urea resin, melamine resin, phenol resin, epoxy resin, etc., but are not limited to these. .

The mixing ratio is 1 to 50 parts by weight per 100 parts by weight of the resin.

No-v containing the above-mentioned repellent! Examples of the method of mixing A-type porous microcapsules with a thermoplastic resin or a thermosetting resin to obtain a molded product include a calendar roll method,
Methods and conditions widely used in the production of conventional resin molded products, such as injection molding, inflation, and extrusion, can be used. The shape of the molded product can be any arbitrary shape, such as a sheet or various three-dimensional molded products, and it is of course possible to further process the sheet or the like into a predetermined shape.

Furthermore, the inorganic porous microcapsules containing the repellent can be made into tablets by adding an excipient such as crystalline cellulose according to a known method.

The insect repellent molded product (tablet product) and insect repellent resin molded product of the present invention obtained as described above can be used to prevent sanitary pests such as cockroaches or grain pests such as the bean weevil from living in, passages,
Damage caused by sanitary pests and crop pests can be controlled by installing or pasting them in hiding places.

This will be explained in detail below using examples.

Examples 1 to 7 Menthol, carvone as repellent active ingredients, Gottoball 16Ck (as inorganic porous microcapsules)
Each sheet and the amount of tablets were obtained using Suzuki Yushi Kogyo Co., Ltd. (trade name) and the resin shown in Clothing 1 below.

Next, place the above sheet 1 in the corner of the breeding box for the Buhiki 7 spring cockroaches.
- and the amount of tablets to be compressed to obtain a repellent effect (goya species tend to gather in the corners of breeding boxes as a habit). Tests were conducted on those that quickly changed direction and never stayed in a corner, and those that did not show any effect on German cockroaches as having no repellent effect. Indicated.

[Effects of the Invention] The insect repellent resin composition and insect repellent tablets of the present invention are effective against sanitary pests such as cockroaches, ants, slugs, and mosquitoes, as well as sanitary insect pests such as cockroaches, ants, slugs, and mosquitoes, without impairing the residual effectiveness of the repellent active ingredients contained therein. It has a remarkable repellent effect on grain pests such as Noshime 71 kuga and adzuki beetle, and since the inorganic porous microcapsules that contain the repellent active ingredient do not scatter, it is also excellent in terms of safety and is highly effective against sanitary pests. It is possible to effectively prevent damage caused by

Ieshiki Mitsumomi 4 bonds and moat k.

Yi ``Human-Ita 11j1 memory Ku

Claims (4)

[Claims] (1) An insect repellent resin molded product containing inorganic porous microcapsules containing a repellent as a core material. (2) The repellent is one of linalool, geraniol, pulegone, citral, terpineol, carvone, menthol, linalyl acetate, menthone, piperitone, citronellal, citronellol, nerol, cineol, and alkylphenols having a branch at the α-position, or The insect repellent resin molded article according to claim 1, characterized in that it contains two or more types as effective repellent ingredients. (3) An insect repellent molded product made by compressing inorganic porous microcapsules containing a repellent as a core material. (4) The repellent is one of linalool, geraniol, pulegone, citral, terpineol, carvone, menthol, linalyl acetate, menthone, piperitone, citronellal, citronellol, nerol, cineol, and alkylphenols having a branch at the α-position, or The insect repellent molded article according to claim 3, characterized in that it contains two or more kinds as effective repellent ingredients.