JPH0899868A - Aerosol product forming sherbetlike shape - Google Patents

Abstract

PURPOSE: To obtain a coolant, capable of ensuring a longer cooling holding time than that of a conventional product, providing a sherbet of a fine texture and useful for removing the pyrexia and burning sensation of skin in the field of sports, beauty, medical care, etc. CONSTITUTION: This aerosol product is obtained by filling 15-70 pts.wt. stock solution prepared by adding, as necessary, one or more of refreshing agents, stimulants, emollients, analgesic agents, antipruritic agents, astringents, antiperspirants, humectants, nutrients, preservatives, germicides, film-forming agents, beautifying agents, ultraviolet light absorbers, thickeners, oil agents, powders, colorants and perfumes and a solvent containing 0-60wt.% ethanol and the balance of purified water to 0.05-8.0wt.% surfactant and making up the total amount to 100wt.% and 30-85 pts.wt. refrigerant containing 5-50wt.% isopentane and the balance of one or more of propane, butane, dimethyl ether or a nonspecific fluorocarbons in an aerosol container and capable forming a jetted material thereof into a sherbetlike shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a product that is usually classified as an aerosol, in which the chemical substance ejected when the button is pressed is frozen into effervescent latent heat due to the evaporation of the cold source to form a sherbet. It is a product. Its use is mainly for the human body, and it has a function of spraying onto the skin or mucous membrane to cool the affected area and remove abnormal heat, and is used in the fields of cosmetics, medicine, sports, and the like.

[0002]

2. Description of the Related Art Conventionally, in the sports field, it is well known that for emergency treatment such as bruising and spraining, the chlorofluorocarbon gas filled in an aerosol can is blown as it is to the affected area and cold massage is performed. However, although it will be converted to LPG by refraining from specific CFCs, it is difficult to use because of the high risk of fire. In the cosmetics field as well, a summer product in which liquefied gas is sprayed onto the skin surface together with a lotion for the purpose of mitigating sunburn hot flashes has been sold.

Regarding products that become sherbet-like when the contents are jetted out, there are a) Japanese Patent Application Laid-Open No. 4-103526 and B) Japanese Patent Application Laid-Open No. 5-310567, both of which are characterized by isopentane. No compounding is done. Note that the use of isopentane in the cosmetics field is c)
JP-A-2-246215, D) JP-A-6-219
Although described in Japanese Patent No. 902, these do not correspond to products forming a sherbet shape.

[0004]

The cooling method of directly spraying the gas is extremely inferior in efficiency because the gas volatilizes in an instant. Then, although sherbet-forming products emerged and were improved to some extent, there are still many unsatisfied points. In order to form a sorbet, water containing a surfactant and coexistence of a certain amount or more of liquefied gas are indispensable, but since detailed examination thereof is insufficient,
For example, there are still problems to be solved, such as a defect that the temperature is too low to be in a comfortable state and a low temperature duration is short.

[0005]

The present invention comprises a surfactant of 0.05 to 8.0 wt% and, if necessary, a component which is expected to have an effect of improving sherbet [a thickener, an oil agent, a powder,
Colorants, fragrances] and specific ingredients for expecting symptomatic effects [cooling agents, stimulants, analgesics, antipruritics, astringents, antiperspirants, moisturizers, nutritional agents, preservatives, bactericides, deodorants , A film-forming agent, a beauty agent, an ultraviolet absorber] and a solvent containing 0-60 wt% of ethanol and the balance of water to make 100, a stock solution of 15-70 parts by weight, and isopentane 5-. The balance is propane, butane [iso, normal], dimethyl ether, or non-specific CFC [50% by weight, such as HCFC 21, 22, 31, 101, 123,
124, 142b, HFC100, 125, 134a,
152a, C318], or 30 to 85 parts by weight of a cryogen, which is one or more of the above, in an aerosol container, and thus the above-mentioned problem in the aerosol product in which the ejecta forms a sherbet shape. Is the solution.

Hereinafter, a detailed description of the present invention will be given. It is a common scientific knowledge that liquefied gases used as a cold source are vaporized when ejected from a sealed container and cause a temperature drop due to a considerable amount of latent heat of vaporization (endotherm). However, another problem arises when considering the heat transfer efficiency which is involved in the target object (in the present invention, the skin surface of the human body). That is, it can be easily understood that when simply spraying as in the conventional method, it is instantly vaporized and most of the latent heat of vaporization deviates into the air and is wasted. Therefore, as a slightly advanced method, a method of ejecting gas together with water was adopted. This is an attempt to change the amount of heat into ice once and to cool the surface of the target object by the latent heat of melting of the ice, as there is a phenomenon that water freezes when ejected, and the efficiency effect has been improved considerably. .
The next improvement is to use water containing a surfactant and spout it together with a gas, which forms bubbles at room temperature, but freezes in a sherbet (or ice cream) form at low temperatures when cooling progresses. .

The sherbet form has the following advantages over the other products. When ejected, most of the vaporized gas is trapped in the bubbles and does not escape to the atmosphere. Therefore, it is possible to take a long time to transfer the negative energy of the gas to the water phase side, and as a result, it is possible to make a significant improvement in efficiency. On the contrary, since the heat transfer from the outside air side is suppressed after the sherbet is formed, the cold temperature holding time is kept long. It has been found that water containing a surfactant has a function of solubilizing a liquefied gas, so that the gas is gradually released and the cooling time is extended. In addition to the effect of heat quantity and temperature, the sherbet-like form has a soft feeling of touching the skin surface unlike water just like mixed ice, which is convenient for application purposes such as beauty.

Although the present invention belongs to the sherbet type, it is a further improvement, that is, its formulation is such that liquefied gas used as a conventional cold source is further mixed with impentane. Is. The effect is
The cold holding time and the touch characteristics of the mixed ice water are further improved. That is, the action on the skin surface of this type is a) an efficient problem of converting the latent heat of vaporization of the liquefied gas into a sherbet shape by vaporization. b) The problems during the holding time due to the influence of the generated sorbet from the outside air will be explained separately.

A) Typical cold sources in the present invention are shown in Table 1
The substances listed below and mixtures thereof are organic compounds having a boiling point of −45 to + 35 ° C., and since they are intended for the human body, they are selected from nontoxic and odorless substances. Naturally, in order to protect the global environment, specific CFCs with restricted use are excluded from the target. When the cryogen is opened at room temperature, it rapidly vaporizes, and at this time, the latent heat of vaporization Qv is taken and the temperature drops. In addition to directly contacting the skin surface, this negative calorie is, in the case of the present invention, once cooled and frozen to the undiluted solution, and then transferred to the skin surface. Approximately 1.0 is the specific heat of the water that makes up the sherbet, and 0.48 is the specific heat of the ice.
7. If the essence and quantity of the cold source and the undiluted solution pre-filled with the heat of melting of ice of 79.7 cal / g are known, the heat transfer efficiency should be calculated by measuring the temperature of the sherbet directly from the jet. .

However, experimental measurements have shown that the sherbet enthalpy is not left-like. According to the research conducted by the present inventor, the cause was pursued that the liquefied gas, which is a cold source, was solubilized and dissolved in the foam formed by blending the surfactant, and was not vaporized. Since this dissolved cold source gradually vaporizes, there is an advantage that a low temperature holding time can be long, and in the case of the present invention, since isopentane is largely dissolved, it can be stored for a particularly long time.

B) It is naturally desirable that the sherbet thus produced has a low temperature and a long holding time for use. The sorbet loses its cooling ability after a while due to contact with the outside air and the coated surface,
This heat conduction affects the thermal conductivity coefficient due to the shape of each sherbet. The heat conduction to the skin surface does not change so much because partially dissolved water is used as the conduction boundary surface, but the heat dissipation at the contact surface with air and the heat transfer in the sherbet mass are different from each other. Since the influence of the temperature difference is larger than that, that is, the average temperature difference Δt = 2.3log (t ₂ −t ₁ ) as the general equation of heat conduction, Q / (U · Δt), the temperature of the sherbet The lower t ₁ is, the shorter the holding time is, and therefore the unnecessarily low temperature is disadvantageous.

Now, the effective temperature for cooling the outside of the human body may be up to + 15 ° C. This value was obtained from a monitor questionnaire of several tens of people, and the most comfortable temperature for cooling the skin was 5 ° C to 10 ° C, and when it was -5 ° C or less, it was rather too cold. However, it should be considered that the lower the temperature, the greater the impact as a sales talk, but when isopentane is mixed with the cryogen of the present invention, the jetting sherbet does not become as cold as the left side, and the comfortable cold temperature is obtained. Has the characteristic that the holding time of is kept extremely long.

C) Furthermore, in the case of the present invention, it is necessary to take into consideration the texture of the produced sherbet. For example, an ice block with a firm sorbet and a sharp edge is the worst, and in some cases, this caused rubbing of the skin and bleeding. Especially when used for cosmetic purposes, a smooth creamy form is desirable.

[0014]

[Table 1]

Features of the Invention <A>"Surfactant 0.05
~ 8 wt% undiluted solution ". Surfactants include a large number of substances classified into cationic, anionic, amphoteric, nonionic, and polar. In the present invention, any of them may be used, and there is no particular limitation, and they are selected from them. Use one kind or two or more kinds. It should be noted that the combination may reduce the effect or change the characteristics. If the cryogen is a hydrocarbon type, it is a nonionic type and the HLB is 10 to 11
Is the standard. When an optimal activator is used, a sherbet can be prepared with a minimum concentration of 0.05% in the stock solution, and below this, it is impossible. On the other hand, if it exceeds 8%, the sherbet becomes remarkably sticky and becomes uncomfortable.

Characteristic <B> of the present invention "A stock solution containing, if necessary, one or two or more kinds of various active ingredients". In cases such as bruising in sports, there are cases where the active ingredient is not included, but in many applications, the active ingredient that fits the purpose is often included. Cooling agents such as menthol, camphor, salicylate, etc .: Capsicum tincture, pepper extract, benzalamide, etc. Stimulants: Allantoin, aminocaproic acid, etc. Reliever: Insanbenzyl hydrochloride, diphenhydramine hydrochloride, analgesic antipruritics: Astringents such as tannic acid and pyrogallol: glycerin, various plant extracts, moisturizers such as NMF: nutritional agents such as various vitamins, various hormones, amino acids: benzalkonium chloride, chlorhexidine hydrochloride, malein chlorpheniramine Examples include bactericidal agents such as: paraben esters, preservatives such as dehydroacetic acid: film-forming agents such as undecylenic zinc, and hilaronic acid.

For the purpose of beauty, the above moisturizers, nutrients,
In addition, hydroxymethylphenylbenzotriazole,
UV absorbers such as cinoxate: Antiperspirant deodorants such as hydroxyaluminum chloride, zinc paraphenolsulfonate, etc .: Skin lubricants such as hydrolyzed collagen, silk-degrading protein, lecithin: tocopherols, ascorbyl palmitate, seaweed extract Whitening agents such as: Sulfur, resorcin, thyroxone, etc. Secretory inhibitors: Talking agents as found in various extracts: In cosmetics, various powders and coloring agents may be used as foundations.

Interestingly, it was reported that cooling had an effect on hair growth and hair growth, and when the product of the present invention was applied to a hair growth agent, active ingredients such as cembly extract, canthari tincture and inosit were added. It

Next, there is an additive compounded for the purpose of changing the feel of the jetted sherbet itself. Thickeners such as hydroxyethyl cellulose, sodium alginate, gum tragacanth, cationized guar gum: cetyl alcohol, stearic acid, coconut oil, hydrogenated beef oil, beeswax,
Oil agents such as squalane, castor oil, shea butter, paraffin, petrolatum, propyl palmitate, cetyl lactate, propylene glycol dicaprate, dichryceryl laurate, ethanolic stearate, coconut oil fatty acid diethanolamide (there are various opinions about the definition of oil. In this description, it is shown in a broad range): Powders such as talc, mica, titanium oxide, silicic acid anhydride, powdered cellulose, etc .: Coloring agents such as iron oxide, riboflavin, legal dyes, natural dyes: blended flavors, natural Fragrances such as pigments, rose water, woodcut:

The addition amount of the above-mentioned additive such as an active ingredient, which is added according to need, is individual for this purpose, and the range cannot be determined in a single manner.

Characteristic of the Invention <C> Ethanol is 0 to 60
Solvent with% balance water. " In order to make a sherbet, a solvent in which a surfactant and active ingredient are dissolved is required,
The solvent is, of course, water for making ice. However, in order to change the feel of the sherbet and to improve the drying property after use, alcohol may be added, and the amount is limited to 60%, and if it is more than that, it becomes difficult to make the sherbet.

Characteristic of the Invention <D>
A cryogen with 50 wt% and the balance being one or more of propane, butane, DME, and non-specific chlorofluorocarbons. The "cooling agent" defined here is an organic compound described in Table 1, which has a low boiling point and is used as a propellant in an aerosol. Isopentane has a bp of 28 ° C. and may be manufactured by blending it with a stock solution, but since the actual production of the product of the present invention is in the aerosol industry, it is more convenient to blend it in the propellant category. Isopentane is the above-a) b).
It is necessary for demonstrating the features of the present invention of c), and the amount thereof needs to be at least 5% in the cryogen category, and if it exceeds 50%, it becomes an obstacle to making a sherbet.

FIG. 1 shows 20 parts by weight of a cooling agent prepared by adding isopentane to propane, n-butane, and i-butane at a ratio of 1/3 wt% of liquefied petroleum gas, and 0.4% of nonionic activator: alcohol. A can container was filled with 80 parts by weight of a stock solution prepared by dissolving 10% in purified water, and thus 10 g of the sherbet was placed on a hot plate heated to 35 ° C., and a change in temperature with time was measured. is there. The results show that the sample with isopentane 0 has a low temperature at the time of ejection, but contrary to the rapid rise in temperature when the ice content reaches 0 ° C and the ice is completely melted, the sample containing isopentane is comfortable for a relatively long time. Understand to keep the temperature. If the amount of isopentane is further increased to more than 50%, the temperature rises sharply again, probably due to less icing in the sherbet. It is considered that this is due to the influence of latent heat due to the evaporation of isopentane and the structure of the sorbet is a bubble-containing type in which heat conduction is difficult.

Features of the Invention <E>"Filling aerosol container with 30 to 85 parts by weight of a cryogen and 15 to 70 parts by weight of a stock solution". Since the cryogen removes the heat of the stock solution by evaporation to form sherbet, the amount ratio to cover the latent heat of evaporation is important.

FIG. 2 shows the relationship between the amount ratio and the initial temperature of the ejected product measured using the same stock solution and the cryogen as in FIG. As is clear from this figure, it is natural that the more the cooling agent is, the lower the temperature is. However, when it exceeds 85%, the efficiency becomes poor due to warping, and the sherbet amount becomes small, which is practically lacking. Is. If it is less than 30%, the amount of heat is insufficient and sherbet does not occur.

A product in which dimethyl ether is incorporated in a part of the cryogen is also an object of the present invention. Since dimethyl ether dissolves in water, it has the advantage of suppressing the rapid evaporation of the cryogenic agent and keeping the low temperature holding time for a long time, and interesting results can be expected by combining it with other cryogenic agents. However, since dimethyl ether has a peculiar odor, it must be used carefully with high susceptibility and sickness.

Among the non-specific CFCs, there are some that are the subject of the present invention. CFCs are odorless, nonflammable and safe for disasters. It is important to note that the particular image of CFCs has a bad image of global environmental damage and is economically expensive, and that technically, measures to prevent can container corrosion should be confirmed.

Thus, the above formulation is filled into a container. However, since the cryogen has a high vapor pressure, the present invention is completed by filling a pressure can with an aluminum or tin material aerosol can.

[0029]

【Example】

Example 1-Stock solution: Self-emulsifying glyceryl monostearate 0.05 wt% POE (10) octylphenyl ether 0.40 Perfume 0.05 Purified water 99.50 Total 100.00 wt% Refrigerant: Liquefied petroleum gas [ 4.4kg / cm ² G, deodorized product] 80.00wt% Industrial isopentane 20.00 Total 100.00wt% Above, 35 parts by weight of the stock solution and 65 parts by weight of the cooling agent, in the 420 container for aerosol, in total. 230 g was filled to obtain the product of the present invention. This product is a basic standard product, and when the container button is pressed, the contents squirt and instantly become a sherbet shape. The quality is rather rough and it is used for temporary heat and pain relief at the bruise site.

Example 2-Stock Solution: Stearylamine (HLB14.0) 0.40 wt% sorbitan sesquiisostearate 0.20 POE (20) sorbitan trioleate 2.00 Pearlsol MCX 2.00 Talc 1.20 Treceram ZP-4000 (Toray) 0.80 titanium oxide 0.30 carbon black 0.05 octyl palmitate 0.05 linoleic acid dibutanolamide 1.80 ethyl alcohol 5.50 camphor 0.25 fragrance 0.25 purified water was added. Refrigerant: Liquefied petroleum gas [3.0kg / cm ² G, deodorized product] 65.00wt% Isopentane 25.00 Dimethyl ether 10.00 Total 100.00wt% 50 parts by weight of stock solution and 50 Weight part and 360 ml
An aluminum aerosol can was filled to obtain the product of the present invention. This product is a cosmetic product containing an ultraviolet protection agent. It has a low SPF value of 5, but its use is as a sun cream. Recently, skin aging due to ultraviolet rays has been strongly disturbed, but moderate sunbathing is good for health, and for this reason, an appropriate ultraviolet ray inhibitor is used, and in order to get a proper sunburn, the inhibitor should be applied several times. Good to apply. The product of the present invention has a smooth foam creamy spouted sherbet, and when it is rubbed on the skin, it has an appropriate coldness,
It is designed so that it touches the skin comfortably.

Example 3 Stock Solution: Glycyrrhetinic acid 0.05 wt% Capsicum tincture 0.25 Bitter tincture 0.50 Hinokitiol 0.05 Pyridoxine palmitate 0.15 Menthol 0.30 Laurylpyridinium chloride 2.80 Cationized guar gum 0 .10. Modified 95% alcohol 30.00 Fragrance 0.30 Purified water 65.50 Total 100.00wt% Cooling agent: Liquefied petroleum gas [3.0kg / cm ² G, deodorized product] 60.00wt% Isopentane 40.00wt% Total 120 parts of 30 parts by weight of 100.00 wt% stock solution and 70 parts by weight of cryogen
An aluminum aerosol can was filled to obtain the product of the present invention. A comb-shaped projection is attached to the ejection port of this container, and a sherbet ejected by pressing a button is imprinted on the scalp. This product is a hair-growth agent, and sherbet has a low temperature of -8 ° C, and the texture is rather rough, with consideration given to stimulating the scalp.

Example 4 Stock solution: POE Lauryl sulfosuccinate 1.0 wt% N Palm oil fatty acid acyl L Sodium glutamate 5.0 Paraben ester 0.2 Ethanol 6.0 Perfume 0.1 Purified water 87.7 Total 100.0 wt% cryogen: Freon 141b 35.0 wt% Freon 134a 55.0 Isopentane 10.0 Total 100.0 wt% Undiluted solution 109 ml (110 g) and cryogen 230 ml (33
0 g) and aerosol tinplate AE420 can,
A dry body shampoo according to the present invention was obtained. This product is used in places where water is valuable, such as in deserts and tankers, when you want to clean your body and want to keep it clean. However, such places are often non-flammable because there are many cases where fire is strictly prohibited.

[0033]

EFFECTS OF THE INVENTION The difference between this product and the conventional product is that it is not a mere mixture of spouts made of ice and water, but the use of a cryogen mixed with isopentane in the presence of a surfactant, It has been found that the ice product has a smooth sherbet or ice cream shape, and it can be expected that the use thereof in various fields such as medical and cosmetics will be expanded.

[Brief description of drawings]

FIG. 1 is a supplementary explanation of the present invention, in which a change in temperature with time of a sherbet is observed.

FIG. 2 is intended to supplement the description of the present invention, and shows the effect of the blending ratio of the cryogen on the temperature of the sherbet.

Claims (1)

[Claims] 1. A surfactant of 0.05 to 8.0 wt%,
If necessary, a refreshing agent, stimulant, emollient, painkiller, antipruritic,
Astringent, antiperspirant, moisturizer, nutrient, preservative, bactericide,
Add one or more of film-forming agents, beauty agents, UV absorbers, thickeners, oils, powders, colorants, and fragrances, and a solvent containing 0-60 wt% ethanol and the balance purified water. 15 to 70 parts by weight of the stock solution of 100 and 30 to 85 parts by weight of a cryogenic agent containing 5 to 50 wt% of isopentane and the balance of one or more of propane, butane, dimethyl ether or non-specific CFCs in an aerosol container. An aerosol product which is formed by filling, and the ejected substance forms a sherbet shape.