JP2007117950A - Burnt odor preventing agent - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a burnt odor preventing agent for preventing and suppressing accidental bumping and occurrence of burnt odor when heating a heat transpiration preparation to be transpirated. <P>SOLUTION: The burnt odor preventing agent comprises one kind or two or more kinds of mineral materials used for heat transpiration preparation and having an absorption oil amount of 20 to 60 ml/100 g. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a burnt odor preventing agent capable of suppressing a burning odor that occurs when a preparation for heat transpiration is heated and evaporated, and a method for preventing the burning odor of a preparation for heating transpiration using the burnt odor preventing agent. .

Conventionally, preparations for heat transpiration are often used for pest control indoors, and organic foaming agents such as azodicarbonamide are mixed in the preparations in order to increase the transpiration and diffusion of medicinal ingredients. . In recent years, preparations for heat transpiration have been developed for use in car sterilization, deodorization, etc., and these use organic foaming agents to reduce the impact on car metal parts and electrical wiring. It is devised to evaporate a medicinal component without using it (for example, refer to Patent Document 1).
In such a preparation for heat transpiration, when a foreign substance or water accidentally invades and comes into contact with the preparation which is heated by a heating means and becomes a high-temperature liquid at about 200 to 300 ° C. during transpiration, A sudden boiling, so-called “sudden boiling” occurs, and a loud sound is generated, or droplets are scattered and the surroundings are soiled. In order to improve such a situation, for example, a technique for preventing bumping by blending an alkali inorganic salt and / or an organic acid is known (for example, see Patent Document 2).

International Publication No. 00/42117 pamphlet (page 1-32) Japanese Patent Laying-Open No. 2005-120028 (page 1-10)

However, in the prior art, there is a problem that a burning odor is generated when the heat transpiration preparation is heated and transpiration, and it is necessary to improve the feeling of use. Further, since it becomes a high-temperature liquid at the time of transpiration, it was not always sufficient to prevent accidental bumping.
In view of the above, the present invention aims to prevent accidental bumping at the time of transpiration and further prevent or suppress the generation of a burning odor when heating and evaporating a preparation for heat transpiration. It is.

As a result of intensive studies to solve the above problems, the present inventors have found that a mineral substance having a specific oil absorption amount is useful for preventing the generation of a burning odor when heating and evaporating a preparation for heat evaporation. As a result, the present invention has been found. That is, the present invention is achieved by the following means (1) to (3).
(1) A burnt odor inhibitor characterized by comprising one or more mineral substances and an oil absorption of 20 to 60 ml / 100 g for use in a preparation for heat evaporation.
(2) The burnt odor preventer according to (1) above, wherein the mineral substance is talc.
(3) A method for preventing a burning odor of a preparation for heat transpiration, wherein the burn odor preventing agent according to (1) or (2) is present in an amount of 60% by weight or more in the preparation for heating transpiration.

  According to the present invention, when a preparation for heat evaporation is heated and evaporated, it can be used without generating a burning odor. In addition, by using a burnt odor preventing agent having a specific oil absorption amount, the medicinal component in the preparation for heat evaporation can be efficiently evaporated without using an organic foaming agent. Furthermore, since it is prevented from becoming a high-temperature liquid at the time of transpiration, the occurrence of accidental bumping can be prevented. And by using the burnt odor preventive agent of the present invention in a preparation for heat transpiration, it is effective for sterilization, deodorization, insecticide, etc. in rooms such as houses and buildings, cars such as cars and railways, air conditioner circuits, etc. It can be carried out.

The burnt odor preventing agent of the present invention can be applied to, for example, the preparation B for heat evaporation used in the self-heating device 1 shown in FIG. The preparation B for heat evaporation is used by being contained in a container, and the medicinal component in the preparation is evaporated by heating by a heating means arranged outside the container.
The illustrated self-heating device 1 includes a bottomed cylindrical outer container 2, and a hydrothermal substance A is accommodated from the bottom to the side. Further, the inside of the outer container 2 is partitioned into two spaces by a partition member 4. The outer container 2 has a plurality of water holes at the bottom, and the water holes are closed by a member having water permeability, for example, a nonwoven fabric sheet 3. In use, by placing the self-heating device 1 in a container 20 containing water W, the water W flows into the outer container 2 through the water passage hole, and further penetrates the nonwoven fabric sheet 3 to come into contact with the hydrothermal substance A. The heat evaporating agent B is heated by the reaction heat generated at that time, and the active ingredient is vaporized, and is released to the outside (inside the room) through the vent hole of the hot melt film 7 and the opening of the lid member 6.

The burnt odor preventing agent of the present invention comprises one or more mineral substances. As a mineral substance, 1 type, or 2 or more types, such as a talc, clay, a calcium carbonate, a calcium phosphate, these composites, is mentioned, for example. Especially, it is preferable to use talc from the point which suppresses a burning odor more, and the point which can evaporate a medicinal component efficiently, and especially S talc (made by Nippon-Taruishi Seirakusha) is preferable.
Further, the burnt odor preventing agent of the present invention has an oil absorption of 20 to 60 ml / 100 g, preferably 20 to 30 ml / 100 g. In order for the oil absorption amount to be in the above range, for example, it may be adjusted by appropriately combining the mineral substances.
If it is composed of one of the mineral substances, the oil absorption amount of this substance is equivalent to the oil absorption amount of the burnt odor inhibitor, and if two or more mineral substances are used in combination, the oil absorption according to the following formula A quantity is required.
Oil absorption amount of base material (ml / 100 g) = [A oil absorption amount (ml / 100 g) × A content (g) + B oil absorption amount (ml / 100 g) × B content (g)] / [A Content + B content]

  The burnt odor preventing agent thus adjusted is preferably present in the heat transpiration preparation so as to be 60 to 90% by weight. If the amount is too small, suppression of the burning odor may not be sufficient, or the transpiration of medicinal ingredients may be adversely affected. Moreover, when it uses too much, the content of the medicinal component in the preparation for heat transpiration may be insufficient, and the desired effect may not be obtained.

The burnt odor preventive agent of the present invention is a preparation for heating and transpiration comprising a granule, a powder, a fine granule, a mixture thereof, etc., which is granulated and dried using a medicinal component, a binder, a solvent and the like. Can be used as Granules obtained by granulation at this time may have a particle size of about 1 to 5 mm. In addition to kneading at the time of granulation, the medicinal component can be held by spraying and dipping after granulation.
Examples of the binder used for granulation include celluloses such as carboxymethylcellulose, hydroxymethylcellulose, and hydroxypropylmethylcellulose, starches such as starch and starch, natural polymer compounds such as gum arabic, polyvinyl alcohol, and polyvinylpyrrolidone. 1 type, or 2 or more types, such as synthetic polymer compounds, etc. are mentioned.
Examples of the solvent include one or more of water, alcohols, paraffins, ethers, esters and the like.
These medicinal ingredients, binders, solvents and the like can be used in necessary amounts within a range that does not adversely affect the effects of the present invention.

As the medicinal component that can be used in the present invention, a disinfectant, a deodorant, a fragrance, an insecticide, a pest repellent, and the like that are heated to about 200 to 300 ° C. to evaporate can be used. These medicinal ingredients may be kneaded into granules granulated as described above, and an effective amount may be maintained by spraying, dipping, etc. If used in the preparation so as to be 10 to 40% by weight. Good.
Examples of the disinfectant include isopropylmethylphenol, p-hydroxybenzoate (ethyl, propyl, butyl), IPBC, chlorhexidine gluconate, chlorhexidine hydrochloride, N- (dichlorofluoromethylthio) -phthalamide, N ′-(dichlorofluoromethylthio). ) N, N′-dimethyl-N′-phenyl-sulfamide, polyoctylpolyaminoethylglycine, thiabentazole, triclosan, p-chlorometaxylenol (PCMX), sorbic acid and the like.
Examples of the deodorant include lauryl methacrylate, geranyl chlorinate, catechin, 4-hydroxy-6-methyl-3- (4-methylpentanoyl) -2-pyrone, cyclodextrin, polyphenol, oxyflavan, flavonol and the like. Is mentioned.
Examples of the fragrance include pinene, limonene, linalool, menthol, eugenol, lavender oil, anethole, 1,8-cineole, fluoropearl, geraniol, citronellol, dihydromyrsenol, terpineol, citral, citronellal and the like.

Examples of insecticides include natural pyrethrin, pyrethrin, allethrin, phthalthrin, resmethrin, framethrin, permethrin, phenothrin, ciphenothrin, praretrin, transfluthrin, methfluthrin, profluthrin, imiprothrin, empentrin, ethofenprox, and sylfluofen. Compounds: Carbamate compounds such as propoxur and carbaryl; Organophosphorus compounds such as fenitrothion and DDVP; Oxadiazole compounds such as metoxadiazone; Phenylpyrazole compounds such as fipronil; Neonicotinoid compounds such as imidacloprid and dinotefuran; Amidoflumet Nitroguadinine-based compounds such as metoprene and hydroprene insect juvenile hormone-like compounds; Anti-juvenile hormone-like compounds such as ecdyson; molting hormone-like compounds such as ecdysone; essential oils such as phytoncide, thin cargo oil, orange oil, cinnamon oil, clove oil; IBTA, IBTE, quaternary ammonium salts, benzyl salicylate, etc. It is done.
Examples of the pest repellent include DEET, di-n-butyl succinate, hydroxyanisole and the like.

Further, if necessary, a disintegrating agent, a rust preventive, a stabilizer and the like may be added. Among them, organic acid esters such as paraoxybenzoic acid ester, stearic acid ester, ethyl lactate, chlorophenyl salicylate; malic acid, fumaric acid When a disintegrating agent such as an acid, tartaric acid, adipic acid, succinic acid or the like is used, disintegration of the preparation by heating is promoted, and the transpiration of the medicinal component becomes smoother.
Examples of the rust inhibitor include 1,2,3-benzotriazole, dicyclohexylammonium nitrite and the like.
Examples of the stabilizer include dibutylhydroxytoluene, butylhydroxyanisole and the like.
Furthermore, if necessary, various surfactants, efficacy enhancers, dyes and the like can be used.

  The preparation for heating and transpiration prepared in this manner is used by being housed in a container, and is used by being heated by a heating means disposed outside the container. Examples of the container include a plastic container, a paper container, a metal container, a ceramic container, and a glass container. Moreover, as a heating means, for example, a heat generation method using a reaction between a water heat generation substance such as calcium oxide, magnesium chloride, aluminum chloride, calcium chloride, iron chloride and water (see FIG. 1); iron powder and ammonium chlorate Air oxidation exothermic method using metals that generate heat by oxidation reaction such as iron and potassium sulfate mixture; electric heating method using nichrome wire, positive temperature coefficient thermistor, semiconductor heater, etc .; platinum catalyst method It is done.

EXAMPLES The present invention will be described in more detail with reference to examples below, but the present invention is not limited to these examples.
Test example 1
3.3 g of the burnt odor preventing agent of the present invention having an oil absorption of 23 to 27 ml / 100 g consisting of S talc (manufactured by Nippon Taishi Seiko Co., Ltd.) was prepared. Then, it is mixed and granulated with 1.0 g of isopropylmethylphenol, 0.05 g of hydroxypropylmethylcellulose, 0.05 g of butyl paraoxybenzoate, 0.2 g of 1,2,3-benzotriazole, and 1.0 g of water, and then granulated at 45 ° C. Was dried to obtain 4.6 g of a preparation for heat evaporation consisting of granules having a diameter of 2 mm. Then, as shown in FIG. 1, 56 g of calcium oxide is filled on the peripheral wall side of the outer container partitioned by the partition member, 4.6 g of the preparation for heating and transpiration is filled inside the partition member, and a hot melt resin film is further filled. A hydrothermal exothermic specimen was prepared by covering with a lid member provided with
Then, the specimen was heated to evaporate, and the intensity of the burning odor was evaluated by a 18-point method by 18 subjects. The results are shown in Table 1. In order to show the usefulness of the present invention, the result of a commercially available product (smell in the car (manufactured by Earth Pharmaceutical)) was shown as a reference example.

It has been demonstrated by the present invention that the burning odor of the preparation for heat evaporation is clearly suppressed.
Furthermore, the heat transpiration preparation of Example 1 was subjected to heat transpiration, and the transpiration rate (%) of isopropylmethylphenol (medicinal ingredient) was determined by gas chromatography, and the result was 90.2%. Since the transpiration rate (%) of the commercially available isopropylmethylphenol (medicinal component) shown as a reference example was 87.3%, it was confirmed that the medicinal component can be transpired more efficiently.

Test example 2
Instead of the burnt odor inhibitor used in Test Example 1, a burnt odor inhibitor made of a mixture of talc and polonex (trade name) was used, and 10 g of a formulation for heating and transpiration of a granule composed of the ingredients shown in Table 2 was used. Prepared. Then, a test specimen was prepared according to Test Example 1, and the transpiration rate (%) of isopropylmethylphenol (medicinal component) was determined. The test results are listed in Table 3.

It is sectional drawing which shows one use form of the preparation for heat transpiration.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Self-heating device 2 Outer container 3 Nonwoven fabric sheet 4 Partition member 6 Lid member 7 Heat-melt film 20 Container A Hydrothermal substance B Heating transpiration preparation W Water

Claims (3)

  A burnt odor inhibitor characterized by comprising one or more mineral substances and an oil absorption of 20 to 60 ml / 100 g for use in a preparation for heat evaporation.   The burnt odor inhibitor according to claim 1, wherein the mineral substance is talc.   A method for preventing the burning odor of a preparation for heat transpiration, wherein the burn odor preventing agent according to claim 1 or 2 is present in the preparation for heat transpiration in an amount of 60 wt% or more.

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