JPH0121925Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is applicable to building interior materials such as wall covering materials, ceiling materials, and floor covering materials, furniture covering materials such as table cloths and chair upholstery materials, and automotive applications. This invention relates to insect-proof sheets that are used in a wide range of applications, including interior materials, agricultural materials, and sheets for the underfloor of wooden houses.

[Conventional technology]

Various microscopic animals live in the human living environment, and some of these microscopic animals cause some kind of damage to humans. These microscopic animals are generally called pests, but these pests are further classified into sanitary pests and nuisance pests. Sanitary pests refer to insects such as mosquitoes, fleas, lice, flies, and poisonous moths that directly or indirectly cause damage to humans or transmit or transmit diseases through blood-sucking or contact actions, and nuisance pests include spiders and cockroaches. It refers to things that visually cause discomfort or fear to humans, such as ants, earwigs, and termites. These pests coexist with or in the vicinity of human living environments and cause tangible and intangible damage.

To exterminate these pests, household insecticides such as sprays, fumigants, and powders are generally used. However, this extermination method is extremely inefficient and complicated, as it usually involves direct spraying or fumigation towards the pests each time the appearance or inhabitation of these pests is confirmed. It was hot. Furthermore, in the case of this method, consideration must be given to the effect of large amounts of spraying on the human body, and restrictions such as adhesion to tableware, food, etc., and prohibition of humans entering the area for a certain period of time are necessary. Ta.

[Problem that the invention attempts to solve]

Therefore, there has been a need to find a way to prevent damage from these pests. That is, under certain circumstances, these pests either do not approach humans at all, or, if they do enter the living space of an approaching human, they abhor the environment and immediately flee, or they die while remaining in this living space for a certain amount of time. However, the living space was required to be completely harmless to the people living there.

[Means for solving problems]

The present invention was made to solve the above-mentioned problems and to enable an insect repellent that has been desired for a long time. 0,0-dimethyl-0-3, called -2-pyridyl phosphorothioate or/and chloropyrifos methyl agent;
To provide an insect repellent sheet in which an aqueous dispersion type paint containing 5,6-trichloro-2-pyridylphosphorothioate is applied onto the surface of a synthetic resin sheet and dried.

〔Example〕

An example of the implementation of the present invention will be explained based on the drawings. The synthetic resin sheet 1 may be made of either thermosetting synthetic resin or thermoplastic synthetic resin, but thermoplastic synthetic resin sheets are generally suitable as architectural interior materials. Thermoplastic synthetic resin sheets are also commonly used as interior materials for vehicles (for example, automobiles). However, thermosetting synthetic resin sheets such as melamine are often used for the surfaces of table tops and partition materials.

Particularly suitable as the synthetic resin sheet 1 of the insect repellent sheet of the present invention are thermoplastic synthetic resins, and among them, soft vinyl chloride resin sheets, polyethylene sheets, and EVA sheets are particularly suitable. These sheets can be used as interior materials for buildings such as wall covering materials, ceiling materials, floor covering materials, furniture covering materials such as table cloths and chair covering materials, interior materials for automobiles, agricultural films, and under floors of wooden houses. It is used in a wide range of applications, including underfloor sheets and window curtains to prevent moisture from rising. The surfaces of these sheets 1 are coated with an aqueous dispersion type paint 2 containing the following specified insecticide and dried. It is also possible to use a backing material 3 such as paper or cloth laminated on the back side of the sheet 1.

0,0-diethyl- used in the present invention
0-3,5,6-trichloro-2-pyridyl-phosphorothioate or/and 0,0-dimethyl-
0-3,5,6-trichloro-2-pyridyl-phosphorothioate is an organophosphorus insecticide developed by the Dow Chemical Company in the United States, which is generally called a chloropyrifos agent and a chloropyrifos methyl agent (hereinafter referred to as chloropyrifos), respectively. It has been used as a medicinal agent against pests of fruit trees, vegetables, and rice, and is also commercially available in Japan.

The properties of the chloropyrifos agent are as follows.

Melting point: 42.2-42.3℃ Shape: White crystal Solubility in water: Slightly soluble 0.42ppm Solvent: Easily flows in benzene, xylene, acetone, chloroform, carbon tetrachloride, methylene chloride. Soluble in methanol and ethanol.

Toxicity: LD50 for mice: 70mg/Kg The chloropyrifos methyl agent is as follows.

Melting point: 45.5℃ Shape: White granular crystals Vapor pressure: 4.22 x 10mmHg/25℃ Solubility in water: Slightly soluble Solvent: Easily soluble in acetone, benzene, ether, chloroform, carbon disulfide Chemicals commonly called insecticides are insecticides. Many of them have strong extermination effects due to their contact poisons and food poisons. However, on the other hand, many of these chemicals are harmful to humans, and it is therefore a mistake to assume that any insecticide can be used in the insect repellent sheet of the present invention. Since the insect repellent sheet of the present invention is used in or near human living spaces, or in places where humans work or play sports in close proximity, it must not be harmful to humans. Must not be.

Therefore, the chemicals used in the insect repellent sheet of the present invention should be free from offensive odors such as irritating and unpleasant odors under actual usage conditions.

Should not cause inflammation or irritation when touched by young children or people with sensitive skin; Should be solid at room temperature or normal living environment temperature; Should not be soluble in water, or should be extremely difficult to dissolve; Present in ordinary synthetic resin coatings. If forced,
It must satisfy all conditions such as not oozing out or separating, and having long-lasting effective effects.

The inventors of the present invention conducted intensive research on insecticides that satisfy all of these conditions, and as a result, they confirmed that the above-mentioned chloropyrifos was most suitable for the insect repellent sheet of the present invention.

However, these chloropyrifos easily dissolve in synthetic resin paints containing organic solvents, and insect repellent sheets using this paint were found to be unsatisfactory in the above conditions. However,
These chlorosulfos emulsions are added to an aqueous dispersion type synthetic resin paint 2 in an amount of 0.1 to 5%, preferably 0.5 to 1.0% in terms of solid content.
It was found that it was well suited to the following conditions and also satisfied the following conditions, exhibiting an extremely excellent slow insecticidal effect over a long period of time.

The water-based dispersion type paint 2 used in the present invention mainly includes vinyl chloride resin, vinyl chloride copolymer resin, vinylidene chloride resin, acrylic resin, bee-acetic acid acrylic copolymer resin, linear polyester resin, and EVA resin. It is preferable that the paint be an emulsion type paint made of thermoplastic synthetic resin, which can be applied to the surface of the synthetic resin sheet 1 and has excellent adhesion.

Furthermore, most of the synthetic resin sheets 1 have a printed pattern or a concave-convex drawing pattern on the surface depending on their use, but when exposed to high temperatures during these processes, the chlorosulfos will dissolve and cause damage to rolls, hands, etc. Since these paints 2 adhere to each other, it is preferable to apply these paints 2 in the final process after the printing process and the squeezing process are completed.

Next, specific embodiments of the present invention will be described in detail.

[Example 1] The following water-based dispersion type paint was applied to the surface of low-foaming wallpaper made of soft vinyl chloride. Hessian striations were applied to the surface of the wallpaper.

Vinyl acetate-acrylic copolymer emulsion (vinyl acetate content 10%, solids content 40%) 100 parts by weight Chlorpyrifos emulsion (solids content 10%) 4 parts by weight Water Appropriate amount (The amount of water added is so that the viscosity of the paint is 1500 cps) (Add as much as possible.) This paint was applied over the entire surface by a jab-dipping method using a gravure roll device having a 120-mesh metal roll. The coating amount was approximately 50 g/m ² .

After coating, it was dried for 2 minutes at a temperature of 40°C and cooled.

The insect repellency of the wallpaper was as follows.

Using wallpaper with a width of 60 cm and a length of 80 cm, make a cylinder A with a diameter of 25 cm with the coated side facing inside, and place it on the lower plate B.

Next, put two house flies in cylinder A, and
Cover with 60 mesh nylon mesh. Separately, a similar test was conducted using the same type of wallpaper without coating. The effects on house flies are as follows.

In the case of the wallpaper of the present invention: The first animal died after 25 minutes. The second animal died after 30 minutes. In the case of untreated wallpaper, both animals survived after 24 hours. The wallpaper obtained in Example 1 was pasted on the ceiling of a concrete condominium. , the phenomenon of house flies sticking to the ceiling completely disappeared, and there were no traces of fly droppings attached at all.

[Effect of idea]

This invention is made by coating the surface of a synthetic resin sheet with a water-based dispersion paint containing chloropyrifos and drying it, so it can be used in areas where this insect repellent sheet is applied, such as living spaces such as rooms, around furniture, inside vehicles, etc. Pests either don't approach you at all, or even if they do, they either run away immediately or die in a short period of time.
It can prevent damage caused by pests, whether direct or indirect.
At the same time, it is possible to provide a good living environment that is not harmful to humans.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the insect repellent sheet of the present invention; Fig. 1 is a cross-sectional view, and Fig. 2 is a perspective view of the test state. In the drawing, 1 is a synthetic resin sheet and 2 is a water-based dispersion paint. .

Claims (1)

[Scope of utility model registration request] 0,0-diethyl- on the surface of the synthetic resin sheet.
0-3,5,6-trichloro-2-pyridylphosphorothioate or/and 0,0-dimethyl-0
-3,5,6-trichloro-2-pyridylphosphorothioate as solid content ratio in aqueous dispersion paint
An insect repellent sheet made by applying and drying a water-based dispersion paint containing 0.1 to 5%.