JP5781724B2 - Aerosol products - Google Patents

Description

  The present invention relates to aerosol products. More specifically, if the injection object is a pest when the injection object is a pest, at least part of the injection object is frozen on the object even if the injection object is about 50 cm to 2 m away from the fire. The present invention relates to an aerosol product characterized in that it can be frozen on the body surface of a pest and cooled sufficiently, so that it can be eliminated even without an insecticidal component.

Patent Document 1 discloses an aerosol composition containing dimethyl ether and water, in which water is dissolved in dimethyl ether and forming a homogeneous phase, and forms a frozen body of water and dimethyl ether by the heat of vaporization of dimethyl ether. An aerosol composition is disclosed. In Patent Document 2, an aerosol composition in which an aqueous stock solution and a liquefied gas are emulsified is discharged from a discharge hole having a cross-sectional area of 1 to 30 mm ² in a flowable state such as a foam, and thereafter time-lapsed. Freezing aerosol products are disclosed.

JP 2004-168943 A JP 2008-31097 A

  However, although the aerosol composition described in Patent Document 1 forms a frozen substance on the injection target if the injection target is at a distance of about 30 cm from the injection hole, the cooling effect is sharply weakened if it is separated by 50 cm or more. There is a problem of not freezing. Further, there is a problem that the distance that can be frozen does not change greatly even if the diameter of the aerosol valve or the injection member is increased to increase the injection amount per unit time. The aerosol product described in Patent Document 2 is discharged from the discharge hole to the palm or the like, and there is a problem that it cannot be used far away.

  The present invention has been made in view of the above problems, and the present invention has high safety against fire, and even if the injection target is separated by about 50 cm to 2 m, at least a part of the injection is frozen on the target. However, when the injection target is a pest, an object is to provide an aerosol product that can be extinguished even if there is no insecticidal component by freezing and cooling the spray on the body surface of the pest.

  The aerosol product of the present invention is an aerosol product in which an aerosol composition in which an aqueous stock solution of 10 to 50% by weight and a liquefied gas of 50 to 90% by weight are emulsified is filled in an aerosol container, The aerosol product is characterized in that the cross-sectional area of the injection hole of the injection member mounted on the is not more than the cross-sectional area of the valve hole of the aerosol container.

Cross-sectional area of the injection hole is a 0.03 to 0.3 mm ^2, the cross-sectional area of the valve hole is preferably a 0.05 to 2.0 mm ^2.

  The cross-sectional area of the injection hole / the cross-sectional area of the valve hole is preferably 0.03 to 0.8.

  It is preferable that a flow rate when the aerosol composition passes through the injection hole is 10 to 20 m / second.

  The viscosity of the aqueous stock solution is preferably 2 to 20000 (mPa · s).

  According to the aerosol product of the present invention, safety against fire is high, and even if the injection target is separated by about 50 cm to 2 m, at least a part of the injection is frozen on the target, and the injection target is a pest. In this case, the propellant can be frozen on the body surface of the pest and cooled sufficiently so that it can be eliminated even if there is no insecticidal component.

It is sectional drawing of the aerosol product concerning one Embodiment of the aerosol product of this invention.

  The aerosol product of the present invention is an aerosol product in which an aerosol composition in which an aqueous stock solution of 10 to 50% by weight and a liquefied gas of 50 to 90% by weight are emulsified is filled in an aerosol container, The aerosol product is characterized in that the cross-sectional area of the injection hole of the injection member mounted on the is not more than the cross-sectional area of the valve hole of the aerosol container.

  The aerosol product of the present invention is a mixture of an aqueous stock solution and a liquefied gas at the specified ratio, and the aerosol composition in which the aqueous stock solution and the liquefied gas are emulsified is jetted from a specific jet path to the atmosphere. Can be maintained in a rod shape without spreading to a wide angle even if it is sprayed onto the nozzle, and at least a part of the sprayed object is frozen even at a position far from the spray hole.

  The aqueous stock solution is emulsified with the liquefied gas in the aerosol container, and when injected into the atmosphere, it is injected far away by the propulsive force of the liquefied gas, and freezes on the object due to the vaporization heat of the liquefied gas.

  The aqueous stock solution contains a liquefied gas and a surfactant for emulsification in water, and a water-soluble polymer, active ingredients, alcohols, oils, powders, and the like can be blended as necessary.

  Examples of the surfactant include polyoxyethylene sorbitan fatty acid esters such as mono coconut oil fatty acid POE sorbitan, monostearic acid POE sorbitan, monooleic acid POE sorbitan; POE · POP cetyl ether, POE · POP decyl tetradecyl ether, etc. Polyoxyethylene polyoxypropylene alkyl ether; polyoxyethylene glycerin fatty acid ester such as POE glyceryl monostearate; polyoxyethylene lanolin alcohol such as POE lanolin alcohol; polyoxyethylene hydrogenated castor oil such as POE hydrogenated castor oil; POE cetyl ether , POE stearyl ether, POE oleyl ether, POE lauryl ether, POE behenyl ether, POE octyldodecyl ether , Polyoxyethylene alkyl ethers such as POE isocetyl ether and POE isostearyl ether; polyethylene glycol fatty acid esters such as polyethylene glycol monostearate, hexaglyceryl monolaurate, hexaglyceryl monomyristate, pentaglyceryl monolaurate, monomyristic acid Pentaglyceryl, pentaglyceryl monooleate, pentaglyceryl monostearate, decaglyceryl monolaurate, decaglyceryl monomyristate, decaglyceryl monostearate, decaglyceryl monoisostearate, decaglyceryl monooleate, decaglyceryl monolinoleate, etc. Polyglycerin fatty acid ester; polyoxyethylene glyceride such as POE glyceryl monooleate Polyoxyethylene sorbitan fatty acid esters such as monopalmitic acid POE sorbitan, monostearic acid POE sorbitan, monoisostearic acid POE sorbitan, monooleic acid POE sorbitan; monolauric acid POE sorbitol, tetrastearic acid POE sorbit, tetraoleic acid Examples thereof include polyoxyethylene sorbite fatty acid esters such as POE sorbit; HLB such as 10-19, preferably 11-18. When the HLB is smaller than 10, the liquefied gas tends to become a continuous phase, and the injection product is difficult to freeze. When the HLB is larger than 19, the liquefied gas tends to be difficult to emulsify.

  The blending amount of the surfactant is preferably 0.1 to 10% by weight, more preferably 0.2 to 5% by weight in the aqueous stock solution. When the blending amount of the surfactant is less than 0.1% by weight, the emulsification stability of the aqueous stock solution and the liquefied gas is deteriorated, and the sprayed product is difficult to freeze, and when it is more than 10% by weight, it is on the adhesion surface. It ’s easy to remain.

  The water is the main solvent of the aqueous stock solution and enhances safety against fire. Examples of the water include purified water, ion exchange water, physiological saline, and deep sea water.

  The water content is preferably 60 to 99.9% by weight, more preferably 70 to 99.5% by weight in the aqueous stock solution. When the blending amount of water is less than 60% by weight, the projectile is hardly frozen and safety against fire is difficult to obtain. When the amount is more than 99.9% by weight, it becomes difficult to blend a necessary amount of a liquefied gas and a surfactant for emulsification.

  The water-soluble polymer adjusts the viscosity of the aqueous stock solution to improve the emulsification stability with the liquefied gas, and the injection path, in particular, the injection is frozen and clogged at the injection hole, or the frozen injection is near the injection hole. It does not disturb the spraying state (spray pattern) by adhering, and maintains the emulsified state even after being sprayed into the atmosphere, thereby making it easy to freeze on the object.

  Examples of the water-soluble polymer include gums such as xanthan gum, carrageenan, gum arabic, tragacanth gum, cationized guar gum, guar gum, gellan gum, locust bean gum; hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, sodium carboxymethyl cellulose, Cellulose polymers such as nitrocellulose and crystalline cellulose; dextran, sodium carboxymethyldextran, dextrin, pectin, starch, corn starch, wheat starch, sodium alginate, modified potato starch, sodium hyaluronate, polyvinyl alcohol, polyvinylpyrrolidone, carboxyvinyl Examples include polymers.

  The blending amount of the water-soluble polymer is preferably 0.01 to 5% by weight, more preferably 0.05 to 3% by weight in the aqueous stock solution. When the content of the water-soluble polymer is less than 0.01% by weight, the above-mentioned effect is difficult to obtain, and when it exceeds 5% by weight, the viscosity of the aqueous stock solution becomes too high and it takes time to emulsify with the liquefied gas. It takes.

  The viscosity of the aqueous stock solution is preferably 2 to 20000 (mPa · s 20 ° C.), more preferably 3 to 10,000 (mPa · s) and 5 to 5000 (mPa · s). When the viscosity of the aqueous stock solution is smaller than 2 (mPa · s), the projectile tends to spread over a wide angle and is difficult to freeze. On the other hand, when it is larger than 20000 (mPa · s), it is easy to receive passage resistance, the flow velocity at the injection hole becomes slow, and the distance at which the spray is frozen tends to be shortened. The flame length test) tends to be long, and the frozen material of the sprayed material adheres to the spray hole, and the spraying state tends to be disturbed. In particular, when the viscosity of the aqueous stock solution is 50 to 1500 (mPa · s), the flame elongation is shortened to 45 cm or less in the flame length test, and the safety to the flame is increased.

  Examples of the active ingredient include antipruritic agents such as crotamiton and d-camphor, anti-inflammatory analgesics such as methyl salicylate, indomethacin, piroxicam, felbinac and ketoprofen; oxyconazole, clotrimazole, sulconazole, bifonazole, miconazole, isconazole, Antifungal agents such as econazole, thioconazole, butenafine, and salts thereof such as hydrochloride, nitrate, acetate; astringents such as zinc oxide, allantoin hydroxyaluminum, tannic acid, citric acid, lactic acid; allantoin, glycyrrhetinic acid, Anti-inflammatory agents such as dipotassium glycyrrhizinate and azulene; local anesthetics such as dibucaine hydrochloride, tetracaine hydrochloride, lidocaine, lidocaine hydrochloride; diphenhydramine, diphenhydramine hydrochloride, male Antihistamines such as chlorpheniramine acid; bactericides and disinfectants such as paraoxybenzoate, sodium benzoate, phenoxyethanol, benzalkonium chloride, benzethonium chloride, chlorhexidine chloride; refreshing agents such as l-menthol and camphor; ethylene glycol, Moisturizers such as propylene glycol, glycerin, 1,3-butylene glycol, collagen, xylitol, sorbitol, hyaluronic acid, caronic acid, sodium lactate, dl-pyrrolidone carboxylate, keratin, lecithin, urea; lauric acid methacrylate, benzoic acid Deodorants such as methyl, methyl phenylacetate, geranyl crotolate, acetophenone myristate, benzyl acetate, benzyl propionate; N, N-diethyl-m-toluamide (di And pest repellents such as caprylic acid diethylamide; insecticidal components such as phthalthrin, allethrin, permethrin, cismethrin, propulserin, resmethrin, d-phenothrin, tefluthrin, benfluthrin, sinepine, piperonyl butoxysite, octachlorodipropyl Efficacy enhancers such as ether; UV absorbers such as 2-methoxyhexyl paramethoxycinnamate, ethylhexyltriazone and oxybenzone; UV scattering agents such as zinc oxide and titanium oxide; retinol, retinol acetate, retinol palmitate, calcium pantothenate Vitamins such as ascorbic acid, sodium ascorbate, dl-α-tocopherol, tocopherol acetate, tocopherol and mixtures thereof; ascorbic acid, α-tocophero Antioxidants such as peony, dibutylhydroxytoluene, peony extract, loofah extract, rose extract, lemon extract, aloe extract, ginger root extract, eucalyptus extract, sage extract, tea extract, seaweed extract, placenta extract, silk extract, etc. Liquid; whitening agents such as arbutin and kojic acid; various fragrances such as natural fragrance and synthetic fragrance;

  The active ingredient is added in an amount of 0.05 to 10% by weight, preferably 0.1 to 5% by weight in the aqueous stock solution. When the amount of the active ingredient is less than 0.05% by weight, the effect of the active ingredient tends to be insufficient. When the amount is more than 10% by weight, the active ingredient concentration becomes too high. May adversely affect the human body.

  The alcohols are used as a solvent for dissolving an active ingredient that is difficult to dissolve in water, and for the purpose of adjusting ease of freezing when sprayed.

  Examples of the alcohols include 2-3 alcohols such as ethanol and isopropanol having 2 to 3 carbon atoms, ethylene glycol, propylene glycol, 1,3-butylene glycol, diethylene glycol, dipropylene glycol, glycerin and the like. Valence polyol, and the like.

  The blending amount in the case of blending the alcohols is preferably 0.1 to 30% by weight, more preferably 0.3 to 20% by weight in the aqueous stock solution. When the blending amount of the alcohol is less than 0.1% by weight, it is difficult to obtain the above-mentioned effect. .

  The oil is used for the purpose of adjusting the emulsified state of the aqueous stock solution and the liquefied gas, removing the oil from the object, or making it easier to penetrate into the object.

  Examples of the oil include hydrocarbon oils such as liquid paraffin, squalene, squalane and isoparaffin; diisopropyl adipate, isopropyl myristate, isopropyl palmitate, cetyl octoate, octyldodecyl myristate, butyl stearate, myristyl myristate, Ester oils such as decyl oleate, cetyl lactate, isocetyl stearate, cetostearyl alcohol, diisobutyl adipate, diisopropyl sebacate, diethoxyethyl succinate, diisostearyl malate; methyl polysiloxane, octamethylcyclotetrasiloxane, deca Methylcyclopentasiloxane, dodecamethylcyclohexasiloxane, methylcyclopolysiloxane, tetrahydrotetramethylcyclotetrasiloxane , Octamethyltrisiloxane, decamethyltetrasiloxane, methylhydrogenpolysiloxane, methylphenylpolysiloxane and other silicone oils; fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, isostearic acid Higher alcohols such as lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, lanolin alcohol; fats such as avocado oil, macadamia nut oil, shea fat, olive oil, camellia oil; waxes such as beeswax, lanolin wax; can give.

  The blending amount of the oil is preferably 0.1 to 10% by weight, more preferably 0.5 to 5% by weight in the aqueous stock solution. When the blending amount of the oil is less than 0.1% by weight, the effect of blending the oil is difficult to obtain.

  The powder is used as an emulsification aid, such as facilitating emulsification of an aqueous stock solution and a liquefied gas, and improving emulsification stability.

  Examples of the powder include talc, zinc oxide, kaolin, mica, magnesium carbonate, calcium carbonate, zinc silicate, magnesium silicate, aluminum silicate, calcium silicate, silica, zeolite, ceramic powder, and boron nitride. It is done.

  The blending amount of the powder is preferably 0.1 to 5% by weight, more preferably 0.3 to 3% by weight in the aqueous stock solution. When the blending amount of the powder is less than 0.1% by weight, the above-mentioned effect is difficult to obtain, and when it is more than 5% by weight, it is likely to be clogged in the ejection path, particularly the ejection hole.

  The aqueous stock solution used in the present invention is prepared by dissolving a surfactant, a water-soluble polymer blended as necessary, in water or alcohols. The aqueous stock solution may be emulsified with oil or dispersed in powder as necessary.

  The amount of the aqueous stock solution is 10 to 50% by weight in the aerosol composition, and preferably 15 to 40% by weight. When the amount of the aqueous stock solution is less than 10% by weight, the projectile is likely to spread over a wide angle, and the projectile is difficult to freeze, and when it is more than 50% by weight, the projectile is difficult to freeze.

  The liquefied gas is a liquid in an aerosol container and is emulsified with an aqueous stock solution to form an emulsion. When it is injected into the atmosphere, it evaporates, and the injection is cooled by heat of vaporization to freeze at least part of it.

  Examples of the liquefied gas include propane, normal butane, isobutane, and liquefied petroleum gas that is a mixture thereof, dimethyl ether, a mixture of the liquefied petroleum gas and dimethyl ether, and the like.

  Among the liquefied gases, those that are easily emulsified with an aqueous undiluted solution and excellent in stability, and that contain a liquefied petroleum gas in the liquefied gas in an amount of 60% by weight or more, more preferably 70% by weight or more, from the viewpoint that the projectile is easily frozen It is preferable to use it. Moreover, it is preferable to use what adjusted so that the vapor pressure in 20 degreeC might be 0.10-0.40 MPa, and also 0.12-0.30 MPa. When the vapor pressure is less than 0.10 MPa, the injection distance becomes short, and when the vapor pressure is more than 50 cm, it becomes difficult to freeze. When the vapor pressure is larger than 0.40 MPa, the flame elongation becomes longer than 60 cm forward in the flame length test, making it difficult to obtain safety against fire.

  The blending amount of the liquefied gas is 50 to 90% by weight in the aerosol composition, and preferably 60 to 85% by weight. When the blending amount of the liquefied gas is less than 50% by weight, the cooling capacity is insufficient and the propellant is difficult to freeze, and when it is more than 90% by weight, the propellant is likely to spread over a wide angle and the propellant is difficult to freeze. .

  The aerosol product of the present invention, for example, fills a pressure resistant container with an aqueous stock solution and a liquefied gas, attaches an aerosol valve to the pressure resistant container, assembles the aerosol container, and shakes the aerosol container to emulsify the aqueous stock solution and the liquefied gas. By doing so, the aerosol composition can be filled.

  In order to adjust the pressure of the aerosol composition, a compressed gas such as carbon dioxide, nitrogen gas, compressed air or oxygen gas can be used as a pressurizing agent.

  As said pressure vessel, what shape | molded into the bottomed cylinder shape which has an opening part in the upper end using synthetic resins, such as metals, such as aluminum and tinplate, and a polyethylene terephthalate, can be used, for example.

  The aerosol valve includes a valve mechanism including a valve stem (hereinafter referred to as a stem), a stem rubber, and a spring, a housing that houses the valve mechanism, and a mounting cup that holds the housing and is fixed to the opening of the pressure-resistant container. I have.

  The stem includes a cylindrical stem upper portion and a columnar stem lower portion, and a valve hole (hereinafter referred to as a stem hole) is provided at a base portion of the stem upper portion. In the stem hole, the stem is urged upward by a spring, and is always sealed by the inner diameter surface of the stem rubber. An injection member (injection button) is attached to the upper portion of the stem, and a passage in the stem that communicates with the injection member from the stem hole is provided in the upper portion of the stem.

  The housing has a bottomed cylindrical shape and accommodates the valve mechanism including the stem, stem rubber, and spring described above. An introduction hole for introducing the liquid phase of the aerosol composition into the housing from the dip tube at the time of use is formed at the bottom of the housing.

  An injection button is attached to the upper portion of the stem, and the injection button includes a stem attachment portion attached to the upper portion of the stem, an injection hole that opens to the atmosphere, and a passage in the button that communicates the injection hole and the stem attachment portion.

  When the spray member is pushed down with a finger, the stem moves downward and the stem hole is opened. At this time, the aerosol composition in the aerosol container is introduced into the housing through the introduction hole of the housing from the dip tube, and is injected into the atmosphere from the injection hole through the stem hole, the passage in the stem, and the passage in the button.

  A nozzle is attached to the tip of the button passage, the nozzle passage having a smaller diameter than the button passage is provided in the nozzle, and an injection hole is provided at the tip. The length of the nozzle passage is preferably 0.1 to 50 mm, and more preferably 0.5 to 30 mm. When the length of the passage in the nozzle is shorter than 0.1 mm, it easily spreads to a wide angle, and when it is longer than 50 mm, the flow velocity decreases due to pressure loss, and the passage in the passage is likely to freeze and become clogged.

  An aerosol composition containing 50 to 90% by weight of liquefied gas is jetted in a rod shape, and in order to freeze at least a part of the jetted material on the object, the liquefied gas is emulsified with an aqueous stock solution, and the cross-sectional area of the jet holes Uses a spray button that is less than the cross-sectional area of the stem hole. When the injection hole is larger than the stem hole, it is easy to expand to a wide angle, and when it is away from the injection hole, it is difficult to freeze.

Preferably the cross-sectional area of the injection hole is 0.03 to 0.3 mm ^2, it more preferably is 0.05 to 0.20 mm ^2, in particular 0.05 to 0.15 mm ² preferable. When the injection hole is circular, the diameter is preferably 0.2 to 0.5 mm, and more preferably 0.25 to 0.45 mm. The flow rate of aerosol composition sectional area may 0.03 mm ² smaller than that passing through the injection holes of the injection hole is clogged when becomes faster which freezes injection was also tends disturbed injection state, 0.3 mm ² If it is larger than this, the flow rate is slow and the freezing distance is shortened. Further, if the sprayed material freezes in the spray hole or the nozzle passage, it is difficult to push out to the outside and clogs with the spray hole, or adheres to the vicinity of the spray hole, disturbs the spray pattern, and is difficult to accurately adhere to the target object.

Preferably the cross-sectional area of the stem hole is 0.05 to 2.0 mm ^2, preferably further is 0.15~1.8mm ^2. The stem hole may be circular or rectangular. One stem hole or a plurality of stem holes may be provided. The cross-sectional area of the stem hole is the total area when there are a plurality of stem holes. However, even when a plurality of stem holes are provided, the cross-sectional area of the injection holes is preferably less than or equal to the cross-sectional area of one stem hole. . When the cross-sectional area of the stem hole is smaller than 0.05 mm ^{2, the} injection amount is small and the freezing distance is shortened. When it is larger than 2.0 mm ^{2, the} injection amount increases, and the safety against fire is lowered.

  The ratio of the cross-sectional area of the injection hole / the cross-sectional area of the valve hole (stem hole) is preferably 0.02 to 1.0, and more preferably 0.03 to 0.8. When the ratio is less than 0.02, the injection hole is too small with respect to the valve hole, so that the injection is easily clogged. When the ratio is more than 1.0, the freezing distance is short and the injection is difficult to freeze. Become.

  The flow rate when the aerosol composition passes through the injection hole is preferably 10 to 20 m / sec, and more preferably 13 to 19 m / sec. When the flow velocity is smaller than 10 m / sec, the freezing distance is shortened, and a back-fire phenomenon in which the flame returns to the injection hole side easily occurs in the flame length test. When it is higher than 20 m / sec, there is a problem that safety to fire is lowered.

Sectional area of the introduction hole of the housing is preferably 0.7～7Mm ^2, further particularly 1.5 to 5 mm ^2. When the introduction hole is circular, the diameter is preferably 1 to 3 mm, and more preferably 1.5 to 2.5 mm. When the cross-sectional area of the introduction hole is smaller than 0.7 mm ^{2, the} injection amount is small, the flow velocity at the injection hole is slowed and the injection distance is shortened, and when it is larger than 7 mm ^{2, the} injection amount increases and safety against fire Sex is reduced.

  In the aerosol product of the present invention, an aerosol composition in which an aqueous stock solution and a liquefied gas are emulsified is injected from an injection path in which the cross-sectional area of the injection hole is equal to or less than the cross-sectional area of the valve hole. In spite of this, there is no problem that the sprayed object freezes and adheres to the spray hole and the spray pattern is disturbed. To maintain a stable rod shape, it is accurately placed on an object 50 to 200 cm, preferably 70 to 180 cm away. Human body to be attached to the skin, such as burn treatment, anti-inflammatory analgesic, antipruritic, skin protectant, antifungal, antiperspirant, astringent, anti-hot, etc. Besides the products for use, it can also be suitably used as a pest control agent.

  EXAMPLES Hereinafter, although an Example demonstrates this invention more concretely, this invention is not limited to these.

  The evaluation method is shown below.

  The obtained aerosol product was immersed in a constant temperature water bath at 25 ° C. for 1 hour, and the state when sprayed for 5 seconds toward the floor surface was evaluated.

1. Injection state: The spray pattern was not disturbed and was stably injected into a rod shape.
Δ: Frozen sprayed material adhered to the tip of the spray hole and the spray pattern was disturbed.
X: Widely spread.
-: Since it did not emulsify, it was not able to evaluate.

2. The flow rate at the injection hole The injection amount per second was measured, and the flow rate was calculated from the density of the aerosol composition and the cross-sectional area of the injection hole.

3. Freezing distance Sprayed toward the floor surface, the distance at which a part of the spray was frozen was measured.
A: 100 cm or more B: 50-95 cm
X: 45 cm or less xx: not frozen
-: Since it did not emulsify, it was not able to evaluate.

4). Cooling capability The temperature was lowered over time at a room temperature of 25 ° C., and was sprayed onto a thermometer provided at a position 50 cm away from the spray hole.
A: The minimum temperature was 5 ° C. or less, and it took 200 seconds or more to return to 20 ° C.
(Circle): The minimum temperature was 10 degrees C or less, and the time to return to 20 degrees C was 150 seconds or more.
X: The minimum temperature was 10 ° C. or higher, and the time for returning to 20 ° C. was within 150 seconds.
-: Since it did not emulsify, it was not able to evaluate.

5. Flame length test The elongation of a flame was measured when it was injected toward a flame having a height of 5 cm at a distance of 15 cm from the injection hole.
◎: 45 cm or less, no flashback ○: 50-60 cm, no flashback △ 1: 65-80 cm, no flashback △ 2: 50-60 cm, with flashback × 1: 85 cm or more × 2: 65 cm or more, flashback Yes

Example 1
The following aqueous stock solution 1 was prepared, and 25 g of the aqueous stock solution was filled in an aluminum pressure vessel. 75 g of liquefied petroleum gas (* 1) was filled by undercup filling, and an aerosol valve was crimped on the opening of the pressure vessel. Next, the aerosol container was shaken up and down to emulsify the aqueous stock solution and the liquefied petroleum gas to produce an aerosol composition. The aerosol valve shown in FIG. 1 was used. That is, the stem hole 1 has a diameter of 0.5 mm (cross-sectional area of 0.25 mm ² ), the housing introduction hole 2 has a diameter of 2.0 mm, and there is no vapor tap hole. 09 mm ² ), and the nozzle passage 4 having a length of 5 mm was used (cross-sectional area of the injection hole / cross-sectional area of the stem hole = 0.36). The test results are shown in Table 1. The result of the flame length test was 35 cm, and no backfire was observed.

<Aqueous stock solution 1>
POE (20) POP (8) Cetyl ether (* 1) 0.5
Xanthan gum (* 2) 0.1
Phenoxyethanol (* 3) 0.5
Talc (* 4) 0.5
Purified water 98.4
Total 100.0 (wt%)

Viscosity of aqueous stock solution: 80 (mPa · s)

<Aerosol composition>
Aqueous concentrate / liquefied petroleum gas (* 5) = 25/75 (weight ratio)
Density of aerosol composition: 0.64 (g / ml)
* 1: NIKKOL PBC-44 (trade name), HLB 12.5, manufactured by Nikko Chemicals Co., Ltd. * 2: Rhodigel-J (trade name), manufactured by Rhodia Nikka Co., Ltd. * 3: Phenoxyethanol S (trade name) ), Daiichi Kogyo Seiyaku Co., Ltd. * 4: Crown Talc PP (trade name), Matsumura Sangyo Co., Ltd. * 5: Mixture of isobutane and normal butane, vapor pressure at 20 ° C. is 0.15 ( MPa)

Example 2
An aerosol product was manufactured in the same manner as in Example 1 except that an aerosol valve having ^two stem holes of φ0.5 mm (cross-sectional area 0.25 mm ² ) was used (cross-sectional area of injection hole / cut of stem hole) Area = 0.18). The results are shown in Table 1. The result of the flame length test was 50 cm, and no backfire was observed.

Example 3
An aerosol product was produced in the same manner as in Example 1 except that an aerosol valve having stem holes having three square holes of 1.0 mm × 0.5 mm (cross-sectional area of 0.5 mm ² ) was used (the injection hole was cut off). Area / stem hole cross-sectional area = 0.05). The results are shown in Table 1.

Example 4
An aerosol product was produced in the same manner as in Example 3 except that an injection button having an injection hole of φ0.4 mm (cross-sectional area 0.16 mm ² ) was used (cross-sectional area of injection hole / cross-sectional area of stem hole = 0.09). The results are shown in Table 1.

Example 5
An aerosol product was produced in the same manner as in Example 3 except that an injection button having an injection hole of φ0.5 mm (cross-sectional area 0.25 mm ² ) was used (cross-sectional area of injection hole / cross-sectional area of stem hole = 0.13). The results are shown in Table 1.

Comparative Example 1
An aerosol product was produced in the same manner as in Example 1 except that an injection button having an injection hole of φ0.6 mm (cross-sectional area 0.36 mm ² ) was used (cross-sectional area of injection hole / cross-sectional area of stem hole = 1.4). The results are shown in Table 1. In addition, the result of the flame length test was 65 cm, and the backfire was 7 cm.

Example 6
An aerosol product was produced in the same manner as in Example 1 except that 20 g of aqueous stock solution 1 and 80 g of liquefied petroleum gas were used. The results are shown in Table 2.
Aqueous concentrate / liquefied petroleum gas (* 5) = 20/80 (weight ratio)
Density of aerosol composition: 0.63 (g / ml)

Example 7
An aerosol product was produced in the same manner as in Example 1 except that 30 g of aqueous stock solution 1 and 70 g of liquefied petroleum gas were used. The results are shown in Table 2.
Aqueous concentrate / liquefied petroleum gas (* 5) = 30/70 (weight ratio)
The density of the aerosol composition: 0.66 (g / ml)

Example 8
An aerosol product was produced in the same manner as in Example 1 except that 40 g of aqueous stock solution 1 and 60 g of liquefied petroleum gas were used. The results are shown in Table 2.
Aqueous concentrate / liquefied petroleum gas (* 5) = 40/60 (weight ratio)
Density of aerosol composition: 0.70 (g / ml)

Comparative Example 2
An aerosol product was produced in the same manner as in Example 1 except that 5 g of aqueous stock solution 1 and 95 g of liquefied petroleum gas were used. The results are shown in Table 2. The result of the flame length test was 90 cm, and the backfire was 15 cm.
Aqueous concentrate / liquefied petroleum gas (* 5) = 5/95 (weight ratio)
The density of the aerosol composition: 0.59 (g / ml)

Comparative Example 3
An aerosol product was produced in the same manner as in Example 1 except that 55 g of the aqueous stock solution 1 and 45 g of liquefied petroleum gas were used. The results are shown in Table 2. The result of the flame length test was 30 cm, and no backfire was observed.
Aqueous concentrate / liquefied petroleum gas (* 5) = 55/45 (weight ratio)
Density of aerosol composition: 0.76 (g / ml)

Example 9
An aerosol product was produced in the same manner as in Example 1 except that the length of the passage in the nozzle was 20 mm. The results are shown in Table 2.

Example 10
An aerosol product was produced in the same manner as in Example 1 except that the length of the passage in the nozzle was 30 mm. The results are shown in Table 2.

Example 11
An aerosol product was produced in the same manner as in Example 1 except that the following aqueous stock solution 2 was used. The viscosity of the aqueous stock solution 2 was 40 (mPa · s). The results are shown in Table 3. The result of the flame length test was 60 cm, and no backfire was observed.

<Aqueous stock solution 2>
POE (20) POP (8) Cetyl ether (* 1) 0.5
Xanthan gum (* 2) 0.05
Phenoxyethanol (* 3) 0.5
Talc (* 4) 0.5
Purified water 98.45
Total 100.0 (wt%)

Example 12
An aerosol product was produced in the same manner as in Example 2 except that the aqueous stock solution 2 was used. The results are shown in Table 3.

Example 13
An aerosol product was produced in the same manner as in Example 3 except that the aqueous stock solution 2 was used. The results are shown in Table 3.

Example 14
An aerosol product was produced in the same manner as in Example 4 except that the aqueous stock solution 2 was used. The results are shown in Table 3.

Example 15
An aerosol product was produced in the same manner as in Example 5 except that the aqueous stock solution 2 was used. The results are shown in Table 3.

Comparative Example 4
An aerosol product was produced in the same manner as in Comparative Example 1 except that the aqueous stock solution 2 was used. The results are shown in Table 3. In addition, the result of the flame length test was 65 cm and the backfire was 10 cm.

Example 16
An aerosol product was produced in the same manner as in Example 1 except that the following aqueous stock solution 3 was used. The viscosity of the aqueous stock solution 3 was 20 (mPa · s). The results are shown in Table 4. The result of the flame length test was 60 cm, and no backfire was observed.

<Aqueous stock solution 3>
POE (20) POP (8) Cetyl ether (* 1) 0.5
Xanthan gum (* 2) 0.01
Phenoxyethanol (* 3) 0.5
Talc (* 4) 0.5
Purified water 98.49
Total 100.0 (wt%)

Example 17
An aerosol product was produced in the same manner as in Example 2 except that the aqueous stock solution 3 was used. The results are shown in Table 4.

Example 18
An aerosol product was produced in the same manner as in Example 3 except that the aqueous stock solution 3 was used. The results are shown in Table 4.

Comparative Example 5
An aerosol product was produced in the same manner as in Comparative Example 1 except that the aqueous stock solution 3 was used. The results are shown in Table 4. In addition, the result of the flame length test was 65 cm and the backfire was 10 cm.

Example 19
An aerosol product was produced in the same manner as in Example 3 except that the following aqueous stock solution 4 was used. The viscosity of the aqueous stock solution 4 was 240 (mPa · s). The results are shown in Table 5. The result of the flame length test was 40 cm, and no backfire was observed.

<Aqueous stock solution 4>
POE (20) POP (8) Cetyl ether (* 1) 0.5
Xanthan gum (* 2) 0.2
Phenoxyethanol (* 3) 0.5
Talc (* 4) 0.5
Purified water 98.3
Total 100.0 (wt%)

Example 20
An aerosol product was produced in the same manner as in Example 4 except that the aqueous stock solution 4 was used. The results are shown in Table 5.

Example 21
An aerosol product was produced in the same manner as in Example 5 except that the aqueous stock solution 4 was used. The results are shown in Table 5.

Comparative Example 6
An aerosol product was produced in the same manner as in Comparative Example 1 except that the aqueous stock solution 4 was used. The results are shown in Table 5. The result of the flame length test was 50 cm, and the backfire was 3 cm.

Example 22
An aerosol product was produced in the same manner as in Example 3 except that the following aqueous stock solution 5 was used. The viscosity of the aqueous stock solution 5 was 1250 (mPa · s). The results are shown in Table 6. The result of the flame length test was 50 cm, and no backfire was observed.

<Aqueous stock solution 5>
POE (20) POP (8) Cetyl ether (* 1) 0.5
Xanthan gum (* 2) 1.0
Phenoxyethanol (* 3) 0.5
Talc (* 4) 0.5
Purified water 97.5
Total 100.0 (wt%)

Example 23
An aerosol product was produced in the same manner as in Example 4 except that the aqueous stock solution 5 was used. The results are shown in Table 6.

Comparative Example 7
An aerosol product was produced in the same manner as in Comparative Example 1 except that the aqueous stock solution 5 was used. The results are shown in Table 6.

Example 24
An aerosol product was produced in the same manner as in Example 1 except that the following aqueous stock solution 6 was used. The viscosity of the aqueous stock solution 6 was 18000 (mPa · s). The results are shown in Table 6. The result of the flame length test was 60 cm, and no backfire was observed.

<Aqueous stock solution 6>
POE (20) POP (8) Cetyl ether (* 1) 0.5
Xanthan gum (* 2) 2.0
Phenoxyethanol (* 3) 0.5
Talc (* 4) 0.5
Purified water 96.5
Total 100.0 (wt%)

Example 25
An aerosol product was produced in the same manner as in Example 1 except that the aqueous stock solution 6 was used and an injection button having an injection hole of φ0.5 mm (cross-sectional area 0.25 mm ² ) was used (cross-sectional area of injection hole / Stem hole cross-sectional area = 1.0). The results are shown in Table 6. The result of the flame length test was 55 cm, and no backfire was observed.

Example 26
An aerosol product was produced in the same manner as in Example 1 except that the following aqueous stock solution 7 was used. The viscosity of the aqueous stock solution 7 was 5 (mPa · s). The results are shown in Table 7. The result of the flame length test was 50 cm, and no backfire was observed.

<Aqueous stock solution 7>
POE (20) POP (8) Cetyl ether (* 1) 0.5
Phenoxyethanol (* 3) 0.5
Talc (* 4) 0.5
Purified water 98.5
Total 100.0 (wt%)

Example 27
An aerosol product was produced in the same manner as in Example 2 except that the aqueous stock solution 7 was used. The results are shown in Table 7.

Example 28
An aerosol product was produced in the same manner as in Example 3 except that the aqueous stock solution 7 was used. The results are shown in Table 7.

Comparative Example 8
An aerosol product was produced in the same manner as in Comparative Example 1 except that the aqueous stock solution 7 was used. The results are shown in Table 7.

As shown in Tables 1-7, in the aerosol product of the present invention, the aqueous stock solution and the liquefied gas are emulsified at a specific ratio, and when the cross-sectional area of the injection hole is less than the cross-sectional area of the stem hole, the injection product As a result, the distance to freeze the spray became longer than 50 cm. In particular, when the cross-sectional area of the injection hole is 0.13 mm ² or less, the freezing distance is particularly long as 100 cm or more, and since there is no disturbance of the injection pattern, the consumer can aim even if it is not close to the object. be able to. On the other hand, when the cross-sectional area of the injection hole was larger than the cross-sectional area of the stem hole, the sprayed material was likely to expand, and the freezing distance was shortened to about 30 cm.

  Moreover, as shown in Table 2, when the blending amount of the aqueous stock solution is in the range of 10 to 50% by weight and the blending amount of the liquefied gas is in the range of 50 to 90% by weight, the sprayed material does not expand and becomes a rod shape. The distance to freeze the object became longer than 50 cm. On the other hand, when the amount of the aqueous stock solution was less than 10% by weight, the aqueous stock solution and the liquefied gas were not emulsified, and when the amount of the aqueous stock solution was more than 50% by weight, it was not frozen.

  As described above, according to the aerosol product of the present invention, an aerosol composition in which an aqueous stock solution and a liquefied gas mixed at a specific ratio are emulsified is injected into the atmosphere by being injected from a specific injection path. However, it is possible to maintain a rod shape without expanding to a wide angle, and at least a part of the sprayed object is frozen even at a position far from the injection hole. Therefore, it is possible to cool the object located at a position away from the injection hole, and it is possible to weaken the movement of the pests not only as a human body article but also due to the cooling effect, and to easily remove the pests. Furthermore, despite the long injection distance, the flame growth is shortened and the safety against fire is high.

1 Stem hole 2 Introduction hole 3 Injection hole 4 Nozzle passage

Claims (4)

An aerosol composition in which an aqueous stock solution of 10 to 50% by weight and a liquefied gas of 50 to 90% by weight are emulsified is an aerosol product filled in an aerosol container,
The aqueous stock solution contains 60 to 99.9% by weight of water and 0.1 to 10% by weight of a surfactant.
The viscosity of the aqueous stock solution is 2 to 20000 mPa · s,
The vapor pressure at 20 ° C. of the liquefied gas is 0.10 to 0.40 MPa,
Injection member mounted on the stem of the aerosol container,
A button internal passage communicating from the stem to the injection hole of the injection member;
A nozzle is attached to the tip of the button passage,
The inside of the nozzle is provided with a nozzle passage having a smaller diameter than the passage in the button,
There is an injection hole at the tip,
The length of the passage in the nozzle is 0.1 to 50 mm,
Cross-sectional area of the injection hole is not more than the cross-sectional area of the valve hole of the aerosol container,
The injection hole has a cross-sectional area of 0.03 to 0.3 mm ² ;
Sectional area of the valve hole is 0.05 to 2.0 mm ^2,
An aerosol product characterized by maintaining a rod shape without spreading to a wide angle even when sprayed at a distance of 50 cm to 2 m from the spray target, and at least part of the spray is frozen on the spray target. Cross-sectional area of the injection hole is an aerosol product according to claim 1, wherein the 0.03~0.20mm ^2. The aerosol product according to claim 1 or 2, wherein a cross-sectional area of the injection hole / a cross-sectional area of the valve hole is 0.03 to 0.80. The aerosol product according to any one of claims 1 to 3, wherein a flow rate when the aerosol composition passes through the injection hole is 10 to 20 m / sec.

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