JPH04187607A - Harmful organism repellent composition - Google Patents

Abstract

PURPOSE:To obtain a stable repellent composition effective against rats, mites, termites, cloth moth, preventing increase in viscosity resulting from polymerization of a mixture of a terpenoid compound and a low polymer thereof by blending the mixture with a specified ratio of polymerization inhibitor. CONSTITUTION:The title stable composition obtained by blending 100 pts.wt. mixture of a terpenoid compound and a low polymer thereof with 0.001-5 pts.wt. polymerization inhibitor. 10C monoterpenoid, 15C sesquiterpenoid, 20C diterpenoid or 30C triterpenoid is usable as the terpenoid compound monomer and a low polymer having <=1,000 average molecular weight and 2-7 polymerization degree is suitable as the low polymer. A quinone-based compound and a quinoline-based compound is usable as the polymerization inhibitor. The composition is preferably mixed with an ultraviolet light absorber (e.g. benzotriazole base).

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a pest repellent composition that exhibits a wide range of excellent repellent effects on pests such as rats, mites, termites, and mussels.

(Prior Art) Various repellents have been used to prevent damage caused by harmful organisms such as rats, mites, termites, and mussels.

This type of repellent includes taste repellents such as cyclohexylamide, which acts on the taste of harmful animals to repel them;
Odor repellents such as alkaloids that act on the sense of smell of nail pests to repel them are known.

However, among these conventional repellents, taste repellents are used to deter harmful animals from biting the protected object by using the fact that they learn unpleasant tastes by "biting" once. It is.

Therefore, in order to protect the entire object from bites, it is necessary to treat the entire object, which requires a lot of effort and expense, and depending on the object, it is difficult to apply such treatment. There was.

In addition, since odor repellents are inherently volatile, it is difficult to maintain their effects over a long period of time, and non-volatile residues are generated that contaminate the environment and cause unexpected harm to humans and livestock. I was afraid.

Furthermore, the use of natural terpenoid compounds as repellent compositions is also being considered.

For example, monoterpenoid (Japanese Unexamined Patent Publication No. 53-86021) is used for cockroaches; Cyclic terpenoid glycosides (Unexamined Japanese Patent Publication No. 6
3-41495) and the like.

However, many of these have problems in that their efficacy quickly disappears, and because they are liquid in nature, they are difficult to handle because they are difficult to granulate, and it is also difficult to add them to rubber, plastics, paints, etc.

Under these circumstances, a repellent composition containing a mixture of a terpenoid compound monomer and its low polymer as a repellent ingredient has recently been developed, and it has attracted attention as a composition that has little impact on the environment and humans and animals, and has excellent long-lasting efficacy. ing.

However, this repellent composition has a problem in that the polymerization of the terpenoid compound progresses due to ultraviolet rays and heat, increasing the viscosity and making it difficult for the active ingredients to volatilize, reducing the repellent effect.

(Problem to be solved by the invention) As described above, conventionally known pest repellents have problems such as requiring a great deal of effort and expense for repelling them, and causing environmental pollution and harm to humans and livestock. Ta.

In addition, conventionally known terpenoid compounds have problems in that they have poor sustainability of efficacy, are difficult to handle, and are difficult to add to rubber, plastics, paints, etc., making it difficult to apply them to various uses.

Therefore, whether a composition containing a newly developed mixture of terpenoid compound monomer and its low polymer as a repellent ingredient, or a repellent composition that is attracting attention as a safe and long-lasting repellent composition without the above-mentioned drawbacks, or a composition that uses ultraviolet rays, heat, etc. There was a problem in that the polymerization of terpenoid compounds progressed, resulting in an increase in viscosity and a decrease in the repellent effect.

The present invention has been made in response to the above-mentioned conventional circumstances, and provides a pest repellent composition containing a mixture of a terpenoid compound monomer and its low polymer as a repellent component, which has improved stability against ultraviolet rays, heat, etc. The object is to provide a repellent composition.

[Structure of the Invention] (Means for Solving the Problem) The pest repellent composition of the present invention contains (a) 0.001 to 2 parts per 100 parts by weight of a mixture of a terpenoid compound monomer and a low polymer thereof. It is characterized by containing 5 parts and 5 parts of polymerization inhibitor.

The terpenoid compound monomer as component (a) used in the present invention is a group of compounds contained in plant essential oils or resin gums obtained by steam distillation of various plants, and essentially contains two or more isoprenes. A monoterpenoid with 10 carbon atoms, a monoterpenoid with 15 carbon atoms
Sesquiterpenoids having 20 carbon atoms, siterpenoids having 20 carbon atoms, and triterpenoids having 30 carbon atoms can all be used.

These terpenoid compound monomers produce plant aromas,
Since it is an essential oil component, it is a harmless substance that has no effect on the natural cycle and is harmless to humans and animals.

Terpenoid compounds that can be used in the present invention include β-
Myrcene (C, OH, 6), Alloocymene (CIOH)
16), ntral (CIOH160), linalool (CIQH160), limonene (CIOH16),
pentene (C+.Hl6), terpinene (CIOH1)
,), terpineol (CIDHlsO), anethole<C1,,)Hl20), pi-(C+oH+,
), Nopol CCIIH190), Calefen CC+
. Hl. ), nobyl acetate (C13H210゜),
Examples include monomers such as isophonyl acetate (CI2H2002).

Examples of the terpenoid compound low polymer include homopolymers and low copolymers of terpenoid compound monomers, and particularly suitable are low polymers with an average molecular weight FF of 11,000 or less and a degree of polymerization of about 2 to 7 melons.

Component (b) polymerization inhibitors include quinone compounds such as hydroquinone, quinoline compounds such as hydroquinequinoline, nitroso compounds such as h-nitrosophenylamine, N-nitrosophenyl-β-naphthylamine, anhydrous Phthalic acid, salicylic acid, acetylsalicylic acid,
Examples include organic acids such as benzoic acid and malic acid.

Among these, it is preferable to use quinone compounds and quinoline compounds. These polymerization inhibitors may be used alone or in combination.

The amount of the polymerization inhibitor to be blended is 0.001 to 5 parts by weight, preferably 0.1 to 2 parts by weight, per 100 parts of the mixture of the terpenoid compound monomer and its low polymer as component (a). If the amount is less than 0,001 parts by weight, the effect will be insufficient, and if it exceeds 5 parts by weight, the dispersion will be poor and precipitation will occur.

In order to further improve the stability against ultraviolet rays, it is desirable that the composition of the present invention contains (C) an ultraviolet absorber together with the above-mentioned polymerization inhibitor. child .

Examples of the ultraviolet absorber include hensitriazole-based, benzophenone-based, and hindered amine-based ultraviolet absorbers. These ultraviolet absorbers may be used alone or in combination of two or more. The amount of the ultraviolet absorber to be blended is preferably in the range of 0.01 to 5 parts by weight per 100 parts by weight of the mixture of the terpenoid compound monomer and its low polymer as component (a).

In addition to the above polymerization inhibitor and ultraviolet absorber, the pest repellent composition of the present invention may contain other compounds such as a compound to increase the sustainability of the repellent effect and an antioxidant to prevent deterioration due to oxidation. Additives may be added as appropriate within a range that does not impede the effects of the present invention.

(Function) The pest repellent composition of the present invention can be prepared by blending a predetermined amount of the polymerization inhibitor (b) with the repellent component (a), which is a terpenoid compound, and its low polymer, which can cause ultraviolet rays and The progression of single notes caused by heat is suppressed. Therefore, the progress of such polymerization can prevent an increase in viscosity and a decrease in repellent effect. That is, the stability of the composition against ultraviolet light and heat is improved.

(Example) Next, examples of the present invention will be described.

Examples 1 to 2 As the terpenoid compound component in (a), a mixture of alloocimene, its oligomer, and an oligomer of α-pinene-7bentene (monomer to oligomer blending ratio of 73
), and (b) a polymerization inhibitor, and further (C) an ultraviolet absorber, were uniformly stirred and mixed (stirring time: 5 minutes) in the formulation shown in the table to obtain a pest repellent composition. .

The viscosity of the obtained pest repellent composition was measured immediately after production, and changes in viscosity after 2 weeks of being left indoors were examined. In addition, in order to examine the stability against ultraviolet rays, we used a sunshine carphone arc lamp (JIS B 775
3 standards) was irradiated and the change in viscosity after 50 hours was measured. The results are shown in the bottom column of the table.

Comparative Example 1.2 As a comparative example, an example in which nothing other than the terpenoid compound component (a) was blended (Comparative Example 1), and an example in which only an ultraviolet absorber was added to the terpenoid compound component in (a) (Comparative Example 2) A stability test similar to that in Examples was conducted for the following.These results are also shown in the table.

(Left below) As is clear from the table, the pest repellent composition according to the present invention showed a large change in viscosity in both comparative examples and even solidified when irradiated with ultraviolet rays. The viscosity change was small and showed good stability.

[Effects of the invention] As explained above, the pest repellent composition of the present invention has the following effects:
By blending a predetermined amount of the polymerization stopper, polymerization of the mixture of the terpenoid compound monomer, which is an active ingredient, and its low polymer due to ultraviolet rays can be suppressed. Therefore, the increase in viscosity and the decrease in the repellent effect caused by such polymerization are prevented, and the composition has excellent stability.

Applicant: Showa Cable and Wire Co., Ltd. Agent: Patent Attorney: Sasa Suyama - (1 other person)

Claims (1)

[Claims] (1) (a) Per 100 parts by weight of the mixture of terpenoid compound monomer and its low polymer, (b) 0.001 to 5
A pest repellent composition comprising parts by weight of a polymerization inhibitor.