JPS5939809A - Expellent for hygienic and agricultural vermin - Google Patents

Abstract

PURPOSE:To provide an expellent for hygienic acid agricultural vermin, having remarkable effect, rapid activity and economic merits, by using a specific cyclic siloxane as an active component. CONSTITUTION:The objective expellent for hygienic and agricultural vermin contains, as an active component, a cyclic siloxane of formula I (R is H or univalent organic group; n is integer of 3-7), preferably a siloxane which is a stable liquid at room temperature [e.g. the cyclic siloxane of formula II (Me is methyl; n<1> is 4, 5 or 6)]. The cyclic siloxane may be a mixture of two or more compounds. The agent exhibits remarkable expelling effect to fly, mosquito, cockroach, flea, louce, mite, leafhopper, green rice leafhopper, night crawler, diamondback moth, leaf folder, aphid, rice stem borer, spider mite, etc. over the whole life-cycle thereof.

Description

[Detailed Description of the Invention] The present invention is harmless to humans and animals! It is related to lr regulation hygiene and ID industry pest control agents.

Numerous hygiene to date. Agricultural pest control agents have been developed, but most of them are expensive, so there is a limit to the scope of their use mainly from an economic standpoint, and in recent years, pest control agents themselves have become As insecticides have become more resistant to insecticides, it is no longer possible to expect them to have any medicinal effects even if pesticides have been developed.

Moreover, many of the currently known pesticides are not toxic to humans and animals, and pose a public health problem.

There is a strong demand for the development of agricultural pest control agents.

The present invention aims to provide a novel sanitary and agricultural pest control agent that solves the problems of conventional pest control agents, where n is a general formula (wherein R is a hydrogen atom or a monovalent selected from organic groups n
The active ingredient is a cyclic siloxane represented by the same or different groups (n is a positive integer of 3 to 7).

The present inventors have conducted intensive research on sanitary and agricultural pest control agents in order to solve the conventional problems as described above, and have found that the cyclic siloxane represented by the above-mentioned general formula is extremely effective for this nK. At the same time, it has been found that it is fast-acting and is also economically advantageous, which led to the completion of the present invention.To explain in detail, the cyclic cloxane, which is the active ingredient in this invention, has the above-mentioned general formula. Examples of the organic group represented by R in the formula include alkyl groups such as methyl group, ethyl group, and propyl group, 7-chloroalkyl groups such as cyclopentyl group and cyclopentyl group, vinyl group, and allyl group. Alkenyl groups such as groups, phenyl groups,
Examples include aryl groups such as tolyl groups, aralkyl groups such as 2-phenylethyl groups, and groups in which the hydrogen atoms of these groups are partially substituted with halogen atoms.

Note that this R does not necessarily have to be the same, and may be two or more different types.

n is a positive integer from 3 to 7.

The above-mentioned cyclic cloxane is a known compound, and its synthesis method, physical properties, etc. can be found in, for example, Chemistryand.
Ttrchnology of 5ilicones
, by WALTERROLL, 1968 AC
ADEMIC PRESS NtrwYork and
It is described in detail in London.

The cyclic cloxane used in the present invention preferably has a boiling point of 150° C., 776° C., although there are no particular limitations on other physical properties as long as it is stable and liquid at room temperature.
0mHU or more, and the viscosity (αt 25℃) is 100
A value of 0 cS or less is preferable.

An example of substitution of such cyclic 70xane is shown below.

Me: Methyl group (same below) (same below) The cyclic 70xane that is effective in the present invention is not necessarily limited to one type in its use, but 2
Seeds or sap or more may be used in combination.

The pesticidal agent of the present invention can be used in forms well known to those skilled in the art, such as oily,
It can be used in any form such as milk, powder, cream, gel, or aerosol spray.

The sanitary and agricultural pest control agent of the present invention includes sanitary pests such as sanitary insects, insects, gophers, animal-parasitic fleas, lice, and mites, planthoppers, leafhoppers, armyworms, and diamondback moths. It has a remarkable exterminating effect on all life cycles (eggs, larvae, pupae, and adults) of agricultural pests such as spider mites, aphids, caterpillars, and spider mites.

Example I Test samples ((a) to &
)) was applied in an amount of 50 m1/-, then 20 first-instar larvae of house flies and first-instar larvae of German cockroach were each crawled on the coating for 1 hour, and the situation after 24 hours had passed. (insect killing rate), the results shown below were obtained.

Test sample; Insecticidal effect; Example 2 Same test sample (α) as used in Example 1
<i) *Use this sample to include Culex pipiens, house fly,
15 eggs each of Konata mite and German cockroach vil-2
After soaking for 9 minutes, remove the excess and wipe it off with a vapor towel, then leave each egg in a constant temperature room at 25°C for a period of time to examine the hatching prevention effect (hatching prevention rate).
The results shown below were obtained.

Hatching prevention effect; Example 3 After immersing 15 each of entangled larvae of house flies, first instar larvae of German cockroaches, and adult mites in the same test samples (α) to (i) as used in Example 1, The sample was immediately poured into a beaker filled with tap water and stirred thoroughly, and after 1 minute had elapsed, it was taken out on a paper towel and the excess sample was wiped off.The sample was then kept at 30°C and the insecticidal effect after 1 hour was examined, as shown below. The following results were obtained.

Insecticidal effect; 110 thorny thorns that grow on para trees
The wt% mixture was sprayed. IIJty4 After a few minutes, 100% of the aphids fell from the para trees to the ground. The fallen aphids were 100% dead. Patent applicant Shin-Etsu Chemical Co., Ltd. Agent - 11... Patent attorney Yamamoto Uri 1;

Claims (1)

[Claims] L represented by the general formula (wherein R is a same or different group selected from a water-based atom or a monovalent organic group, n is a positive integer from 3 to 7); Sanitary and agricultural pest control agent containing cyclic 70xane as an active ingredient