CN-117099796-B - Continuous mosquito coil

Abstract

The invention provides a durable mosquito coil which can reduce the stimulus during combustion and can continuously kill insects for a long time even if the combustion is performed for a short time. The present invention provides a sustained mosquito coil having a sustained insecticidal effect even after combustion, which comprises at least one insecticidal component selected from the group consisting of bifenthrin, profluthrin and transfluthrin, and a carbide substrate having an iodine adsorption capacity of 200mg/g or less, wherein the amount of the insecticidal component that volatilizes per unit time during combustion is set to 0.05-15 mg/min, and the combustion time is set to 30 minutes or less.

Inventors

• Kawasaki nobuhisa
• KASHIMA SEIICHI
• NAKAYAMA KOJI

Assignees

• 大日本除虫菊株式会社

Dates

Publication Date

20260512

Application Date

20200622

Priority Date

20190701

Claims (4)

1. 1. A sustaining mosquito coil which sustains an insecticidal effect even after burning, comprising: An insecticidal ingredient selected from at least one of the group consisting of bifenthrin, transfluthrin and transfluthrin, and A plant-derived carbide substrate having an iodine adsorption capacity of 25mg/g to 200mg/g, The content of the insecticidal component is 0.1-5 wt% relative to the weight of the whole sustainable linear mosquito incense, The content of the carbide base material is 20-80 wt% relative to the weight of the whole continuous linear mosquito-repellent incense, The weight of the continuous mosquito coil is 0.2 g-5 g, And setting the volatilization amount of the insecticidal component per unit time at 0.1 mg/min-15 mg/min during combustion.
2. 2. The sustained-release mosquito coil according to claim 1, which has a combustion time set to 30 minutes or less.
3. 3. The sustaining mosquito coil according to claim 1 or 2, which sets the duration of the insecticidal effect after combustion to 8 hours or more.
4. 4. The sustaining mosquito coil according to claim 1 or 2, wherein the amount of the insecticidal component is C I , and the amount of the insecticidal component volatilized after complete combustion is V, wherein the units of C I and V are mg, respectively, and the formula (1) is satisfied, 。

Description

Continuous mosquito coil The application relates to a divisional application, the application date of the main application is 22 days of 6 months in 2020, the international application number is PCT/JP 2020/0243309, the application number entering the China national stage is 202080043712.5, and the application is a continuous mosquito coil. Technical Field The present invention relates to a sustained mosquito coil having a sustained insecticidal effect even after combustion. Background As a product for repelling flying insects such as mosquitoes, a mosquito coil is widely used in which an insecticidal component is volatilized into a space to be treated by fumigation. The burning time of the mosquito coil is set to about 7 to 8 hours in accordance with the sleeping time of a person, and the insect pests in the space to be treated are knocked down or killed until the mosquito coil burns out, and the mosquito coil acts to exclude or repel the insect pests from the space. However, in recent years, due to the improvement of sanitary environments and the change of housing conditions, particularly in apartments and the like in urban areas, sealing of housing is continued, and the possibility of insect pests such as mosquitoes entering the building from outside the building is reduced. Therefore, when expelling mosquitoes and the like existing in a room before bedtime, it is not necessarily required to continuously volatilize insecticidal components for the bedtime as in the conventional mosquito coil. In view of this situation, attempts have been made to shorten the burning time of a mosquito coil which is considered to be essential for continuous use for a long period of time. For example, there is a mosquito coil containing pyrethrin that volatilizes at normal temperature, such as bifenthrin, profluthrin, and tefluthrin, as an insecticidal component (see patent document 1, for example). The mosquito coil of patent document 1 has a long-term insecticidal effect even if the burning time is shortened because the insecticidal component remains in the air for a long time even after burning. Prior art literature Patent literature Patent document 1 Japanese patent application laid-open No. 2011-12056 Disclosure of Invention Problems to be solved by the invention However, in the case of mosquito coils, products are being sought that reduce odor or irritation caused by insecticidal components, fragrance components, and smoke. However, patent document 1 has left room for study for reduction of stimulus at the time of combustion, with the main object of reducing the combustion time and volatilizing a necessary amount of insecticidal component. The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a persistent mosquito coil which reduces the irritation at the time of combustion and can continue the insecticidal effect for a long time even when the combustion is performed for a short time. Means for solving the problems The present invention for solving the above problems is a sustained-release mosquito coil having a sustained insecticidal effect even after combustion, comprising: An insecticidal ingredient selected from at least one of the group consisting of bifenthrin, transfluthrin and transfluthrin, and A carbide substrate having an iodine adsorption capacity of 200mg/g or less. According to the sustained-release mosquito coil of the present constitution, the carbide substrate having an iodine adsorption capacity of 200mg/g or less is contained in addition to at least one insecticidal component selected from the group consisting of bifenthrin, profluthrin and transfluthrin, and thus the insecticidal component remains in the air for a long period of time even after combustion, so that the insecticidal effect can be sustained for a long period of time. Further, the carbide substrate having an iodine adsorption capacity of 200mg/g or less can prevent the insecticidal component from being excessively decomposed to reduce the insecticidal effect and reduce odor or irritation caused by smoke or the like at the time of combustion. In the sustaining mosquito coil of the present invention, preferably, And setting the volatilization amount of the insecticidal component per unit time at 0.05-15 mg/min during combustion. According to the persistent mosquito coil of the present constitution, by setting the amount of the insecticidal component to be volatilized per unit time to the above-described range, even when the mosquito coil burns for a short period of time, a sufficient amount of the insecticidal component can be volatilized in the air. In the sustaining mosquito coil of the present invention, preferably, The combustion time was set to 30 minutes or less. According to the sustained mosquito coil of the present constitution, the burning time is set to 30 minutes or less, so that the mosquito can be prevented by burning the sustained mosquito coil just