JPH08188509A - Insecticidal incense stick - Google Patents

Abstract

PURPOSE: To prepare an insecticidal incense stick having prolonged burning period and, accordingly, effective for longer period in the case of a stick having the shape and size of conventional incense stick or effective for the period same as that of conventional stick even in the case of a stick having small size and light weight compared with conventional insecticidal incense stick. CONSTITUTION: This insecticidal incense stick contains 0.01-5wt.% of an insecticidal compound such as pyrethroid compound, 45-70wt.% of TABUKO (starch of Machilus thunbergii), 7-10wt.% of α-starch and 20-48wt.% of wood flour.

Description

Detailed Description of the Invention

[0001]

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

[0002]

BACKGROUND OF THE INVENTION Although various incense sticks have been known so far, insecticidal incense sticks for controlling mosquitoes, flies, etc., so-called mosquito coil sticks are generally burned in a maximum of about 7 hours. Therefore, there was a problem that people burned up while they were sleeping and bitten by mosquitoes at dawn. On the other hand, although it is possible to solve the problem by increasing the total length of the insecticidal incense stick, in reality, the shape and size of the mold for making an incense stick having a total length of 70 to 80 cm, which has been conventionally used, can be improved. Since the capital investment such as the modification of the manufacturing line and the modification of the packaging equipment due to the change is large, it has been desired to develop an insecticidal incense stick with a slow burning rate that can be manufactured using the current manufacturing equipment as it is.

[0003]

According to the present invention, 0.01 to 5% by weight of an insecticidal active ingredient compound, 45 to 70% by weight of tab powder, 7 to 10% by weight of α-starch and 20 to 48% by weight of wood flour are used. The insecticidal incense contained therein has a slow burning rate as compared with the conventional incense, that is, it can be an insecticidal incense that can be burned for a long time.

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

Α-used in the insecticidal incense of the present invention
For starch, for example, starch extracted from potatoes such as corn, potato, sweet potato, taro, yam, konjac potato, tapioca, etc., starch, wheat, rice, etc. is dispersed in water and heated to 80 ° C. or higher. Then, it is gelatinized, dried and powdered.
The tab powder used in the insecticidal incense of the present invention is obtained by drying bark, branches, leaves, etc. of Tabuki, which is a tree of the genus Tabuki of the family Asteraceae, into powder.

The wood powder used in the insecticidal incense of the present invention includes, for example, sandalwood powder, sandalwood powder,
Camphor powder, peach tree powder, cedar powder, willow powder,
Hardwood powder, honoki powder, linden powder, spruce powder, yellow poplar powder, wig powder, acacia powder,
Examples include porcupine powder, psyllium powder, psyllium powder, sawdust powder, cat powder, kiri powder, shioji powder, balsa powder, lauan powder, birch powder, citrus tree powder, shiitake mushroom sardine powder, and the like.

The insecticidal incense of the present invention may have a composition consisting essentially of an insecticidal active ingredient compound, tab powder, α-starch, wood flour and, if necessary, auxiliary agents such as pigments and mildew-proofing agents. Further, it may contain a combustion-supporting agent, a binder and the like which are materials for ordinary incense sticks. Examples of the combustion-supporting agent include Asteraceae plant powder, Aceraceae plant powder, Sedaceae plant powder, Zinchoideaceae plant powder, Fusariumaceae plant powder, Moraceae plant powder, Alanaceae plant powder, Lamiaceae plant powder, Rubiaceae plant. Powders, honeysuckle plant powders, dried plant powders such as pyrethrum extract powders (cass powder), charcoal, activated carbon, coal, carbon powders such as carbon black, and the like, and these are used alone or in combination of two or more kinds. To be

As the binder, for example, mannan, seaweed extract powder, Troloois powder, tragacanth gum, gum arabic, guar gum, gambir extract powder, natural polymers such as casein, polyvinyl alcohol, polyacrylamide, sodium polyacrylate, poly Ethylene oxide, polyvinylpyrrolidone, methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose salt,
Examples thereof include synthetic polymers such as carboxymethyl starch salt, dialdehyde starch, and cationic starch, and these may be used alone or in combination of two or more.

The pigments used in the insecticidal incense of the present invention include, for example, organic pigments such as malachite green, inorganic pigments, dyes, etc.
Examples thereof include acids such as benzoic acid, sorbic acid, dehydroacetic acid, p-hydroxybenzoic acid, o-phenylphenol and the like, salts and esters thereof, and usually 0 to 2% by weight of each incense stick.

The insecticidal incense of the present invention comprises an insecticidal active ingredient compound or a preparation thereof (emulsion, oil, microencapsulated preparation, various inclusion preparations, etc.), tab powder, α-starch, wood powder and, if necessary, other Mix the combustion-supporting agents and binders of
It is manufactured by adding water and kneading, molding with a molding machine such as a press molding machine, an extrusion molding machine, an injection molding machine, and drying.

[0011]

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. First, a production example of the insecticidal incense according to the present invention will be shown. Production Example 1 Allethrin emulsion [allethrin 0.3 part by weight, Hymal BL
Z (Matsumoto Yushi-Seiyaku Surfactant) 0.034 parts by weight, Himal 1002Z (Matsumoto Yushi-Seiyaku Surfactant) 0.0039 parts by weight and Solvesso 150 (Exxon Chemical organic solvent) 0.04
64 parts by weight] 0.385 parts by weight, tab powder 45 parts by weight,
8 parts by weight of α-starch, 0.3 parts by weight of malachite green, 0.2 parts by weight of sodium dehydroacetate and wood flour were added and mixed to make 100 parts by weight, and an appropriate amount of water was added to the mixture to knead well, extrusion molding and drying. And got an insecticidal incense stick.

Production Example 2 In Production Example 1, tab powder 50 was replaced with 45 parts by weight of tab powder.
An insecticidal incense stick was obtained in the same manner as in Production Example 1 except that parts by weight were used. Production Example 3 In Production Example 1, tab powder 45 parts by weight was replaced with tab powder 55.
An insecticidal incense stick was obtained in the same manner as in Production Example 1 except that parts by weight were used. Production Example 4 In Production Example 1, the tab powder was replaced with 45 parts by weight of the tab powder 60.
An insecticidal incense stick was obtained in the same manner as in Production Example 1 except that parts by weight were used. Production Example 5 In Production Example 1, the tab powder was changed to 45 parts by weight instead of the tab powder 65.
An insecticidal incense stick was obtained in the same manner as in Production Example 1 except that parts by weight were used.

Production Example 6 Allethrin emulsion [allethrin 0.3 part by weight, Hymal BL
Z (Matsumoto Yushi-Seiyaku Surfactant) 0.034 parts by weight, Himal 1002Z (Matsumoto Yushi-Seiyaku Surfactant) 0.0039 parts by weight and Solvesso 150 (Exxon Chemical organic solvent) 0.04
64 parts by weight] 0.385 parts by weight, tab powder 60 parts by weight,
7 parts by weight of α-starch, 0.3 parts by weight of malachite green, 0.2 parts by weight of sodium dehydroacetate and wood flour were added to the whole to make 100 parts by weight, and an appropriate amount of water was added to the mixture, which was well kneaded, extruded and dried. And got an insecticidal incense stick.

Production Example 7 In Production Example 6, 7 parts by weight of α-starch was replaced with α-starch 9
An insecticidal incense stick was obtained in the same manner as in Production Example 6 except that parts by weight were used. Production Example 8 In Production Example 6, α-starch 7 parts by weight was replaced with α-starch 1
An insecticidal incense stick was obtained in the same manner as in Production Example 6 except that 0 part by weight was used.

Next, a production example of insecticidal incense used for comparison in the test examples described below will be shown as a comparative example. Comparative Example 1 Allethrin Emulsion [Allethrin 0.3 parts by weight, Hymal BL
Z (Matsumoto Yushi-Seiyaku Surfactant) 0.034 parts by weight, Himal 1002Z (Matsumoto Yushi-Seiyaku Surfactant) 0.0039 parts by weight and Solvesso 150 (Exxon Chemical organic solvent) 0.04
64 parts by weight] 0.385 parts by weight, tab powder 10 parts by weight,
3 parts by weight of α-starch, 0.3 parts by weight of malachite green, 0.2 parts by weight of sodium dehydroacetate and wood flour were added to make 100 parts by weight, and an appropriate amount of water was added to the mixture to thoroughly knead, extruded and dried. And got an insecticidal incense stick.

Comparative Example 2 In Comparative Example 1, 3 parts by weight of α-starch was replaced with α-starch 5
An insecticidal incense stick was obtained in the same manner as in Comparative Example 1 except that parts by weight were used. Comparative Example 3 In Comparative Example 1, the tab powder 20 was replaced with 10 parts by weight of the tab powder.
An insecticidal incense stick was obtained in the same manner as in Comparative Example 1 except that 4 parts by weight of α-starch was used instead of 3 parts by weight of α-starch. Comparative Example 4 In Comparative Example 1, tab powder 10 parts by weight was replaced with tab powder 30.
An insecticidal incense stick was obtained in the same manner as in Comparative Example 1 except that 4 parts by weight of α-starch was used instead of 3 parts by weight of α-starch. Comparative Example 5 In Comparative Example 1, 10 parts by weight of tab powder was replaced with 30 tab powder.
An insecticidal incense stick was obtained in the same manner as in Comparative Example 1 except that 5 parts by weight of α-starch was used instead of 3 parts by weight of α-starch.

Next, a test example will be shown. Test Example Using each of the insecticidal incense sticks obtained in the above Production Examples and Comparative Examples, the time required for burning 1 cm was measured by the following method. That is, a 10 cm long incense stick is supported horizontally,
Two weights of about 3 g were hung from incense sticks with a thin cotton thread at intervals of 40 mm (see FIG. 1). The incense stick was ignited, and the time from when the first weight fell due to combustion to when the next weight fell was measured. Repeated three times, the average value was divided by the length (4 cm) to obtain the burning time per cm. The results are shown in Table 1.

[0018]

[Table 1]

[0019]

Since the insecticidal incense according to the present invention has a long burning time, it can be an effective insecticidal incense for a longer time in the conventional incense having the shape and size.
Moreover, even when a small and lighter incense stick is manufactured than the conventional product, the insecticidal incense stick can be used for the same time as the conventional product.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a method of measuring a burning time of insecticidal incense sticks in a test example.

[Explanation of symbols]

 1 ... insecticidal incense stick 2 ... weight 3 ... incense stick support

Claims (2)

[Claims] 1. An insecticidal incense stick which comprises 0.01 to 5% by weight of an insecticidal active ingredient compound, 45 to 70% by weight of tab powder, 7 to 10% by weight of α-starch and 20 to 48% by weight of wood flour. 2. The insecticidal incense according to claim 1, wherein the insecticidal active ingredient compound is a pyrethroid compound.