JPH01279802A - Insect and termite-preventing agent - Google Patents

Abstract

PURPOSE:To provide a granular insect and termite-preventing agent capable of being applied without splashing so that operators can safely apply the agent without inhaling the agent and having excellent controlling effect against unpleasant injurious insects such as millipedes and termites by impregnating an insecticide into an inorganic porous carrier. CONSTITUTION:An insecticide such as chloropyrifos or phoxim is preliminarily dissolved in an organic solvent such as acetone and subsequently homogeneously impregnated into a mineral inorganic porous carrier such as silica gel or zeolite containing silica alumina as a main component and having a pH in the range of neutral to week acidic, followed by drying to provide a granular insect and termite-preventing agent. The agent exhibits an excellent effect against unpleasant injurious insects such as wood louses, grain borers and termites and safely applied by operators even at insufficiently ventilated environments such as the treatment of soil under a floor. Since the insecticide is adsorbed in the bores of the granules, the insecticidal effect of the agent gradually appears and is continued for a long period. The application of the agent can be also performed with a granule applying machine other than hand sowing, thereby permitting to greatly reduce the time of the application.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an insect and termite repellent having a control effect against unpleasant pests such as snail beetles, digibugs, pill bugs, termites, and bark beetles.

(Prior Art) Insect and termite control methods can be roughly divided into two types: a wood treatment method by applying an oil agent and a soil treatment method by spraying an emulsion. Currently, insect and termite repellents include fiphosphorus, naphthalene, triazine, carbamate, and pyrethroid agents, all of which are used in the form of oils or emulsions.

The soil is treated by spraying using a sprayer or sprayer. For safety reasons, workers must be careful not to inhale fog. In addition, to prevent environmental pollution, pay attention to wind direction and other factors to prevent fog from scattering nearby. Furthermore, if there are wells, fish ponds, etc. nearby, it is necessary to prevent chemical solutions and treated soil from flowing into them.

Oils are generally treated by smearing or spraying. For safety reasons, workers must be careful not to inhale the gas. Also, care must be taken to prevent oil from igniting due to damage to under-floor lighting equipment.

(Problems to be Solved by the Invention) Conventional soil treatment work is very dangerous in terms of health and safety for workers, and often causes complaints from neighbors because it pollutes the work environment.

(Means for Solving the Problems) As a result of intensive studies to solve these problems, the present inventors have developed a granular insect repellent characterized by impregnating an inorganic porous carrier with an insect repellent. This led to the invention of an anticide.

The insect repellents used in the present invention include:
Examples include chlorpyrifos, phoxim, pyridafention, and tetrachlorvinphos. Triazine-based insect repellents include tripropylisocyanurate; carbamate-based insect repellents include Sevin, which has carbamic acid derivatives, notiocarbamic acid derivatives, and urea derivatives as main ingredients;
Examples include propoxa. Permethrin is a pyrethroid insecticide.

The inorganic porous carrier used in the present invention may be any mineral material such as acid clay, kaolin clay, talc, silica gel, or zeolite, which has silica-alumina as its main component and has a neutral to slightly acidic pH. A general method for producing the insect repellent and termite repellent of the present invention is to dissolve the insect repellent in advance in an organic solvent such as alcohol, benzene, or acetone, and then impregnate the inorganic porous carrier uniformly. Just dry it.

Next, the present invention will be explained in detail based on examples.

(Example 1) Particle size 4-8 consisting of A120.90% and 5i0210%
10 kg of pale yellow spherical porous carrier of φ [Neobead DJ (manufactured by Mizusawa Chemical Industry Co., Ltd.), 10% of chlorpyrifos
It was uniformly impregnated with 1 kg of acetone solution and air-dried with thorough stirring to remove acetone, thereby obtaining granules containing 1% chlorpyrifos.

(Example 2) Particle size 4-8φ consisting of A1□0.2% and 5i0298%
40% of chlorpyrifos was added to 10 kg of a white transparent spherical porous carrier "Silveed NJ (manufactured by Mizusawa Chemical Industry Co., Ltd.)".
7 was uniformly impregnated with 500 g of setone solution, and air-dried with thorough stirring to remove acetone, to obtain granules containing 2% chlorpyrifos.

(Example 3) SiOz 73%, ALo, 14%, Fe 20-
0.2%, CaOO, 3%, K2O0,1%, Na2O
Particle size 0.1-1.0.2%, H2O 12.2%.
10 kg of a pale yellow spherical porous carrier of 0φ was uniformly impregnated with 5 kg of a 1% acetone solution of chlorpyrifos, and the acetone was removed by air drying with thorough stirring to obtain granules containing 0.5% chlorpyrifos. I got it.

(Example 4) 10 kg of pumice powder (1-10I) was uniformly impregnated with 1 kg of a 10% acetone solution of chlorpyrifos, and while stirring well, air-dried to remove the acetone. A granular material containing the powder was obtained.

(Example 5) Using the powders and granules obtained in Examples 1 to 4, an outdoor termite prevention efficacy test was conducted in accordance with the soil treatment agent efficacy test method and termite prevention efficacy test method specified by the Japan Shiroari Countermeasures Association. I did it for a year. The results are shown in Table 1.

(Example 6) In Example 1, 10% of Phoxim was added to 410 kg of Neobead D.
% acetone solution so as to be uniformly impregnated, and the acetone was removed by drying under reduced pressure while stirring well to obtain granules containing 1% phoxime.

Table 1 (Example 7) 10 kg of Zeolite 31 [manufactured by Kunimine] was uniformly impregnated with 8 in 10% acetone solution of tripropylisocyanurate, and the acetone was removed by drying under reduced pressure while stirring well. Granules containing 1% tripropylisocyanurate were obtained.

(Example 8) 10 kg of silica sol was uniformly impregnated with 1 kg of a 10% acetone solution of permethrin, and acetone was removed by drying under reduced pressure while stirring well to obtain granules containing 1% permethrin.

(Example 9) Using the granules obtained in Examples 6 to 8, an outdoor termite prevention efficacy test was conducted for one year in accordance with the soil treatment agent efficacy test method and termite prevention efficacy test method specified by the Japan White Ant Countermeasures Association. I did it. The results are shown in Table 2.

Table 2 (Effects of the Invention) Since the insect and termite repellent of the present invention is in the form of granules in which an inorganic porous carrier is impregnated with the drug, it does not scatter during spraying. Therefore, even in a poorly ventilated environment such as soil treatment under the floor, workers can work extremely safely without inhaling the insect repellent. Furthermore, since the drug is adsorbed inside the pores of the granules, the effect appears gradually and lasts for a long time. Spreading can be done by hand or by using a granulator, so construction time can be significantly shortened compared to conventional methods.

Patent applicant Nippon Carlit Co., Ltd.

Claims (1)

[Claims] An insect- and ant-proof shaver characterized by impregnating an inorganic porous carrier with an insect repellent.