JPH08133906A - Insecticidal incense stick - Google Patents

Abstract

PURPOSE: To obtain an insecticidal incense stick hardly scattering ash folded in burning and after burning, consequently, almost not polluting the circumference after using. CONSTITUTION: This insecticidal incense stick contains 0.01-2wt.% of an insecticidal component compound, preferably a pyrethroid compound, excellent in safety and 3-15wt.% of synthetic silica made by humid process, having <=30μm average particle diameter. The insecticidal incense stick further contains 30-80wt.% of combustion-supporting agent used as a conventional substrate for incense stick and 5-50wt.% of binder, and further as necessary, coloring matter and 0-2wt.% of a mildew proofing agent are contained and insecticidal component is added in the form of a technical product or previously added as a preparation such as an emulsion, an oiling agent, a suspension, an encapsulized preparation.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to insecticidal incense.

[0002]

2. Description of the Related Art Although various incense sticks have been known so far,
Insecticidal incense for controlling mosquitoes, flies, so-called mosquito coil
Despite its excellent insecticidal efficacy, there is environmental pollution due to ash breaking and scattering during and after burning,
It is being replaced by so-called electric mosquito repellent mats and liquid-wicking type heat vaporization insecticides.

[0003]

DISCLOSURE OF THE INVENTION The present invention has been made for the purpose of finding an insecticidal incense which is less likely to be broken and scattered during and after combustion.

[0004]

According to the present invention, a wet process synthetic silica having an incense stick having an average particle diameter of 30 μm or less is used.
By containing 15% by weight, it becomes possible to improve the hardness and strength of ash generated by combustion. That is, the insecticidal incense of the present invention is an insecticidal active ingredient compound 0.01 ~
2% by weight and 3 to 15% by weight of wet process synthetic silica having an average particle diameter of 30 μm or less.

As the insecticidal active ingredient compound used in the insecticidal incense of the present invention, it is preferable to use a pyrethroid compound which is excellent in safety. Specific examples thereof include:
For example, pyrethrin, allethrin, pralethrin, transfluthrin, resmethrin, flamethrin, empentrin, terrarethrin and the like can be mentioned.

Silicon oxide includes various natural silicon oxide minerals,
There are synthetic silicas and the like, and among the synthetic silicas, there are various ones such as dry process silica and wet process silica depending on the production method obtained, and each has different properties. What is used in the present invention is wet process silica, that is, silicon oxide obtained by reacting an aqueous solution of sodium silicate with a mineral acid such as hydrochloric acid or sulfuric acid, and drying the formed precipitate, and the average The particle size is 30 μm or less. Here, the average particle diameter means a volume median diameter.

The insecticidal incense of the present invention is an insecticidal active ingredient compound.
In addition to 0.01 to 2% by weight and 3 to 15% by weight of wet process synthetic silica having an average particle size of 30 μm or less, a combustion-supporting agent, a binder, and, if necessary, a pigment and a mildew-proof agent used in a base material for an incense stick. Contains agents.

[0008] Examples of the combustion-supporting agent include juniper powder, sandalwood powder, camphor powder, peach powder, cedar powder, willow powder, springwood powder, honoki powder, linden powder, spruce powder, yellow poplar powder, wig powder, acacia powder, Porcupine powder, psyllium powder, psyllium powder, sawdust powder, cat powder, kiri powder, shioji powder, balsa powder, lauan powder,
Birch powder, citrus tree powder, woody powder such as shiitake sardine tree powder, Asteraceae plant powder, Aceraceae plant powder, Mesaceae plant powder, Zinchoideaceae plant powder, Fusariumaceae plant powder, Moraceae plant powder, Asteraceae plant Powders, Lamiaceae plant powders, Rubiaceae plant powders, Honeysuckle family plant powders, plant dry powders such as pyrethrum extract powders (cass powder), charcoal, activated carbon, coal, carbon black and other carbon powders, etc. The insecticidal incense of the present invention contains 30 to 80% by weight.

As the binder, for example, starch, mannan, seaweed extract powder, trowel mallow powder, tragacanth gum, gum arabic, guar gum, ganbil extract powder, tabuki skin extract powder (tab powder), natural polymers such as casein, polyvinyl Synthetic polymers such as alcohol, polyacrylamide, sodium polyacrylate, polyethylene oxide, polyvinylpyrrolidone, methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, carboxymethylcellulose salt, carboxymethylstarch salt, dialdehyde starch, cationic starch and the like. These are used alone or in admixture of two or more, and are usually contained in the insecticidal incense of the present invention in an amount of 5 to 50% by weight.

Examples of pigments include organic pigments such as malachite green, inorganic pigments and dyes, and examples of the fungicide include benzoic acid, sorbic acid, and the like.
Examples thereof include acids such as dehydroacetic acid, p-hydroxybenzoic acid, o-phenylphenol and the like, salts and esters thereof, and the incense is usually contained in an amount of 0 to 2% by weight.

The base material for incense sticks of the present invention is prepared by mixing an insecticidal active ingredient compound, a wet-process synthetic silica and various materials used in ordinary base materials for incense sticks, adding water and kneading the mixture, followed by press molding and extrusion. Mold with a molding machine such as a molding machine or injection molding machine,
It is manufactured by drying. When adding the insecticidal active ingredient, the active ingredient of the insecticidal active ingredient may be added as it is,
Various preparations such as emulsions, oils, suspensions and microencapsulated preparations may be added in advance.

[0012]

EXAMPLES Next, the present invention will be described more specifically by way of examples, but the present invention is not limited to the following examples. Production Example Praletrin Emulsion [Prarethrin (Pyrethroid Compound) 0.08 parts by weight, Himar BLZ (Matsumoto Yushi-Seikatsu Co., Ltd. surfactant) 0.01 parts by weight, Himar 1002Z (Matsumoto Yushi-Seikatsu Co., Ltd.) 0.001 parts by weight and Solvesso 150
(Exxon Chemical Organic Solvent) 0.009 parts by weight]
0.1 parts by weight, Carplex CS-7 (wet synthetic silica manufactured by Shionogi Seiyaku, average particle size 3 μm) 10.0 parts by weight, dust powder 40.0 parts by weight, tab powder 30.0 parts by weight, malachite green 0.3 parts by weight, sodium dehydroacetate 0.2 parts by weight and cedar powder were added to the whole to make 100.0 parts by weight, and a proper amount of water was added to the mixture to knead well, and extrusion molding and drying were carried out to obtain an insecticidal incense stick.

Next, a production example of insecticidal incense used for comparison in the test examples described below will be shown as a reference example. Reference Example 1 A comparative insecticidal incense stick was obtained in the same manner as in the above-described Production Example except that 10.0 parts by weight of dust powder was used instead of 10.0 parts by weight of Carplex CS-7. Reference Example 2 In the above production example, the above production was carried out except that 10.0 parts by weight of Carplex XR (wet method synthetic silica manufactured by Shionogi Seiyaku Co., Ltd., average particle size: 100 μm) was used instead of 10.0 parts by weight of Carplex CS-7. Comparative insecticidal incense was obtained in the same manner as in the example. Reference Example 3 In the above-mentioned production example, except that 10.0 parts by weight of Aerosil 300 (Nippon Aerosil Co., Ltd. dry process synthetic silica) was used instead of 10.0 parts by weight of Carplex CS-7, the same procedure as in the above-described Production Example was carried out. I got the insecticidal incense. Reference Example 4 Carplex CS-7 3 in the above production example was replaced with Carplex CS-7 10.0 parts by weight and residue powder 40.0 parts by weight.
The same operation as in the above-described production example was carried out except that 0.0 part by weight and 20.0 parts by weight of dust were used, but the extrusion moldability was poor and a satisfactory insecticidal incense could not be obtained.

Next, a test example will be shown. Test Example Each of the insecticidal incense sticks obtained in the above Production Example, Reference Example 1, Reference Example 2 and Reference Example 3 was set in an incense holder and burned.
With the insecticidal incense sticks obtained in the above-mentioned production examples, the original shape was retained with almost no drop even after burning, and the ash could be removed from the incense stick holder with fingers and discarded. On the other hand, in the insecticidal incense obtained in Reference Example 1 and Reference Example 2,
The generated ash was brittle and was broken short like a normal mosquito coil and fell under the incense holder, and powdery ash was scattered around.
In addition, the insecticidal incense obtained in Reference Example 3 disappeared during burning.

[0015]

INDUSTRIAL APPLICABILITY The insecticidal incense according to the present invention has improved hardness and strength of ash produced by combustion, and since the ash is less likely to be broken and scattered during and after combustion, it is possible to prevent contamination of the surroundings during use. There are few.

Claims (2)

[Claims] 1. A wet method synthetic silica 3 having an insecticidal active ingredient compound of 0.01 to 2% by weight and an average particle diameter of 30 μm or less.
An insecticidal incense, characterized by containing ~ 15% by weight. 2. The insecticidal incense according to claim 1, wherein the insecticidal active ingredient compound is a pyrethroid compound.