JPH06227941A - Aerosol cosmetic - Google Patents

Abstract

PURPOSE:To obtain a new type aerosol cosmetic making moderate heating felt in a coated part in application to the bare skin. CONSTITUTION:This aerosol cosmetic is characterized by sealing a content stock solution, composed of 50-99.5wt.% hydration exothermic substance and 0.5-50wt.% cosmetic solution and prepared by regulating the viscosity to <=2500cP in a pressure-resistant container made of a metal and filling a chemically inactive compressed gas as a propellant therein. The cosmetic is capable of hydrating and generating heat in use.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aerosol cosmetic composition, and more particularly, to a novel aerosol cosmetic composition that is applied to bare skin and at the same time is prepared so that the applied part can be heated appropriately by heat generated by hydration. Type aerosol cosmetics.

The aerosol cosmetics according to the present invention are suitable for aerosol cosmetics such as hair treatments, hair conditioners, hair packs, facial cleansers, body cleaners, depilatories, hair dyes, skin creams and shampoos. is there.

[0003]

2. Description of the Related Art One-part aerosol cosmetics are usually prescribed on the assumption that they are used at room temperature, except for special two-part reaction type aerosol products. Liquid type aerosol agent, "hot pack agent"
Aerosol cosmetics labeled as hot are also available on the market. However, the one-pack type aerosol cosmetics that are labeled as hot on the market do not actually generate heat, but rather blow out like bubbles and do not let the body temperature escape to the outside due to the heat insulating effect of the bubbles. It gave a hot feeling. It should be noted that some are prescribed to give a feeling of warmth by using a heat-generating substance or a skin stimulant such as capsicum tincture, but in both cases, the nerve is applied to the part where the user has applied. By concentrating, the temperature rises only to the extent that it finally feels warm or not.

Other than aerosol products, glycols are used as the main agent and those utilizing the exothermic reaction due to hydration are commercially available. These are thickened with a thickening agent. Since it is commercialized in a tube such as plastic, when it is spread on bare skin, the exothermic reaction occurs only on the surface of the drug because of its high viscosity, so the exothermic amount is small and the exothermic reaction is slow. Therefore, it has little warmth.

[0005]

An aerosol hair conditioner, which is a kind of aerosol cosmetics, is used for the purpose of moisturizing, eliminating dryness, and making hair combable. In the conventional room temperature specification type aerosol hair conditioner,
Spreading or swelling on the hair or skin causes a difference in its effect due to the difference in ambient temperature during use, and in winter, the spread or swelling on the hair or skin is not as great as when used in the summer, and it is wet. There was a problem that the effect was incomplete.

Further, the aerosol hair remover is used for the purpose of dissolving and removing hair by a chemical reaction of thioglycolic acid contained as an active ingredient. In the conventional room temperature type aerosol hair remover, the reaction speed of the hair remover that is often taken in the summer is slow in the winter, and the reaction does not proceed to the expected place within the limited time. , The higher the temperature, the faster the chemical reaction.) There was a problem that the hair removal treatment was incomplete.

Further, the same is true of the aerosol hair dye, and this tendency is particularly remarkable in the aerosol hair dye that is chemically reacted.

[0008] Therefore, the present inventors have attempted to prescribe an aerosol cosmetic that generates heat during use, with the technical problem of providing an aerosol cosmetic that is not affected by the difference in ambient temperature during use. As described above, there was no exothermic property as described above, or there was no rise enough to feel a temperature rise on the skin even if a fever was generated, and it was not obtained from the one having poor actual sensitivity. In addition, the fact that the actual feeling is poor leads to the fact that the effect due to the temperature rise is insufficient in actual use.

Therefore, the present inventor has made various studies as to whether or not there is a method for increasing the temperature rise and increasing the actual sensation, and has found that the following points are important. That is, the amount of heat generated during the hydration reaction is proportional to the inherent properties of the glycols (for example, polyethylene glycol) that are directly involved in the heat of hydration and the amount used, and the amount of heat generated by the hydration reaction increases. For example, since the rising temperature is not the limit maximum temperature but the addition temperature, when the content temperature of the aerosol cosmetics is much lower than the body temperature before use,
Even if the temperature rise due to the hydration reaction is large, the content temperature that is the base value before the temperature rise is too low,
This is a fact that even if the heat of hydration is added, if the total temperature is lower than the body temperature or has a value equal to the body temperature, the actual feeling of being heated during use does not occur. For example, when the ambient temperature is low during use such as in winter when the effect of heating is expected, the contents of the aerosol cosmetics are also low in temperature, so that there is no real feeling of heating. Therefore, the maximum temperature after the hydration reaction during product use can be increased by preheating the temperature of the contents themselves before the heat of hydration reaction is caused and bringing them closer to the body temperature. It is possible to improve the real feeling of.

Further, the present inventor has conducted a number of systematic experiments and trial productions in order to raise the rising temperature and improve the actual sensation in the limited calorific value due to the hydration reaction before the heat escapes. It was necessary to react as much as possible at a time, and it was found that expanding the area of the skin where the temperature is felt is also an important factor in improving the sensation. The present invention has been completed based on the above findings, and the technical problems can be achieved by the present invention as follows.

[0011]

[Means and Action for Solving the Problems] That is, the present invention is
(1) A hydration exothermic substance (50 to 99.5% by weight) and a cosmetic solution (0.5 to 50% by weight) prepared to have a viscosity of 2,500 centipoise or less, and then chemically sealed in a metal pressure resistant container. An aerosol cosmetic material which is filled with a compressed gas which is not active as a propellant and which causes heat of hydration during use.

(2) The temperature rise at the time of heat of hydration shows a temperature rise of at least 5 ° C. or more within 5 seconds when the content stock solution and water are mixed at a ratio of 1: 1 (weight ratio). 1) Aerosol cosmetics described in

(3) The aerosol cosmetic according to any one of the above (1) or (2), wherein the compressed gas is nitrogen gas, argon gas, helium gas and carbon dioxide gas alone or in a mixture.

The structure of the present invention will be described in more detail below along with its operation. In the present invention, the aerosol pressure resistant container is filled with a propellant consisting of a hydration exothermic substance, a cosmetic solution and a compressed gas that is not chemically active.

The hydration exothermic substance used in the present invention is a substance that dissipates heat by a hydration reaction, and more specifically,
A substance that generates heat such as heat of dilution, heat of dissolution, and heat of reaction when it comes into contact with water.

Specific examples of the hydration exothermic substance used in the present invention include alkylene glycols such as ethylene glycol, propylene glycol, butylene glycol, amylene glycol and hexylene glycol, diethylene glycol, dipropylene glycol and diethylene glycol monomethyl. Ethers, dialkylene glycols such as diethylene glycol monoethyl ether, dialkylene glycol derivatives containing alkylene, aliphatic triols such as glycerol, polyethylene glycols, polypropylene glycols, copolymers or oxidation of ethylene oxide and propylene oxide Butyl monoethers of copolymers of ethylene and propylene oxide, poly (ethylene oxide) or poly (ethylene oxide)-(propylene oxide) glycerol Ducts, such as alkylene oxide containing ether C ₁ -C _5, such as glycerol adduct of polypropylene oxide can be exemplified, these wettable pyrogen can be used alone or two or more thereof.

It is particularly preferable to use polyethylene glycol, polyoxyethylene polyoxypropyl alkyl ether such as polyoxyethylene polyoxypropyl cetyl ether, propylene glycol dipropylene glycol, butylene glycol, amylene glycol and hexylene glycol. preferable.

In the present invention, the exothermic temperature of the hydration exothermic substance itself is usually preferably higher, but at the same mixing ratio (weight) with water when the hydration exothermic substance is mixed with the cosmetic solution to form the stock solution. It is better to finish so that the temperature rise is about 10 ° C. If the temperature is higher than 20 ° C, there is a possibility of causing a local burn, which causes a safety problem. It is most preferable that the reaction at the time of heat of hydration shows a temperature rise of at least 5 ° C. or more within 5 seconds in order to realize the exothermic property. In order to satisfy these exothermic conditions, sufficient heat generation cannot be obtained unless the amount of the hydration exothermic substance exceeds at least 50% by weight, and the amount of the cosmetic solution is usually at least from the viewpoint of use and effect. Since the addition of 0.5% is indispensable, the upper limit of the amount of hydration exothermic substance inevitably stays at 99.5%.

The cosmetic amount solution in the present invention includes an aerosol treatment, an aerosol hair conditioner,
For aerosol hair packs, aerosol face wash, aerosol body cleaner, aerosol depilator, aerosol hair dye, aerosol massage cream, aerosol hand cream, aerosol hair restorer, aerosol skin cream, aerosol shampoo, etc. It is a solution containing the corresponding active ingredient.

In the present invention, the stock solution containing the hydration exothermic substance and the cosmetic solution must be brought into contact with the widest possible skin surface within a short time when applied onto the skin. Contacting with a wide skin surface within a short period of time means expanding the surface area of the undiluted solution at the time of spraying, and naturally the area of contact with water on the skin surface also increases, raising the exothermic temperature. Improve the warming effect. For this purpose, it is necessary to maintain the viscosity of the stock solution of the liquid at 2500 centipoise or less.

The stock solution must have a viscosity such that it can be easily moved in the aerosol pressure resistant container. According to the High Pressure Gas Control Law, the content amount is set to 90% or less of the internal volume of the pressure resistant container at 35 ° C., but normally it is filled to 80% or less of the internal volume of the pressure resistant container. Therefore, if the viscosity of the stock solution is low, it can be easily moved and stirred in the pressure resistant container, so by holding the aerosol product according to the present invention in the hand and shaking it lightly, the body temperature transmitted from the fingers to the surface of the metal pressure resistant container. However, it can be easily and efficiently transmitted to the concentrated stock solution, and the temperature of the concentrated stock solution can be brought close to the body temperature. Even from this point of view, the viscosity of the stock solution must be 2500 centipoise or less. 25
If it is higher than 00 centipoise, the moving and stirring of the stock solution in the container becomes poor, and heat is transferred only at a part of the container wall of the pressure-resistant container and the part of the stock solution. The transfer of heat from the surface of the pressure-resistant container that can be formed to the stock solution is almost nothing. Further, if the viscosity is too high, the amount of the liquid remaining in the container will eventually increase when the content stock solution is sprayed from the container and used, which is not preferable from this aspect as well.

The pressure vessel used in the present invention must be a metallic vessel made of aluminum, iron, copper or the like. This is because the specific heat of the container wall of the pressure-resistant container is small and the container must have good thermal conductivity so that the body temperature of the fingers cannot be efficiently transferred from the container surface to the content undiluted solution when the undiluted solution moves and stirs inside the container. is there. It is most preferable to use an aluminum pressure vessel in consideration of thermal conductivity, cost and product stability.

The diameter of the aerosol pressure resistant container used in the present invention is preferably in the range of about 13 to 25 mm. 25
When it exceeds mm, the surface area which is the contact portion with the fingers becomes smaller with respect to the content amount in the practice of the present invention which is intended to give a feeling of exothermicity. The feeling becomes poor. In addition, the pressure resistant container for aerosol with a diameter of less than 13 mm is excellent in heating, but has a diameter of 1 mm.
It is difficult, if not impossible, to manufacture aerosol pressure resistant containers of less than 3 mm.

The inner volume of the aerosol pressure resistant container used in the present invention is preferably in the range of 5 to 50 ml. When it exceeds 50 ml, it takes time to warm the contents, and the amount used per time is usually about 5 g or less, but it is uneconomical to heat 10 times the amount each time it is used. Is. In addition, it is difficult, if not impossible, to manufacture an aerosol pressure-resistant container having an internal volume of less than 5 ml.

In the present invention, the amount of the content stock solution to be filled in the aerosol pressure-resistant container is not absolute,
A range of 40 ml is desirable. According to the High Pressure Gas Control Law, the amount of contents that can be filled in the aerosol pressure resistant container is 90% or less of the container internal volume at 35 ° C, as described above. Therefore, an internal volume of 50 ml must be 45 ml or less. And it can be filled if it is less than 45 ml.
However, in the aerosol cosmetics according to the present invention, in order to improve the moving and stirring of the stock solution, the upper limit is set to 8 with a margin.
It is preferable that the amount is 40 ml or less of 0% because the heat conduction is good and the safety is high. The amount of contents is determined by the relationship with the internal volume of the pressure container used.

In order for the aerosol cosmetics according to the present invention to exhibit excellent coatability and spreadability on the skin surface and to effectively generate heat of hydration within a short period of time, the content concentrate is foamed. It is necessary to take it out of the pressure resistant container without For this reason,
The propellant used in the present invention is an aerosol formulation of a type in which a concentrated stock solution is extruded and discharged using a compressed gas.

Further, in the present invention, since the stock solution is packed in a closed container, gas generation inside the container raises the internal pressure in the container and induces an explosion, which is dangerous and contains a hydration exothermic substance. Because it is a prescription, it can be said that it is a chemically inactive gas such as nitrogen gas, argon gas, helium gas, or an inert gas that is chemically slightly inactive but not substantially chemically active. It is preferable to use carbon dioxide.

When the aerosol cosmetic composition according to the present invention as described above is used and applied to an object such as hair, skin, and hair, the undiluted solution of the applied content is well spread on the object and the skin By reacting with the above water and surrounding water, the temperature will be slightly higher than the body temperature of the human body, so that the effects of the aerosol cosmetics can be effectively achieved as planned (set), such as swelling the object sufficiently. be able to.

[0029]

EXAMPLES Next, typical examples of the present invention will be described. Example 1 Hair Treatment Aerosol Cosmetic Formulation: Polyethylene glycol (average molecular weight 200) 82.00% by weight Concentrated glycerin 7.50% by weight Alkyltrimethylammonium chloride 9.98% by weight Palm oil fatty acid diethanolamide 0.50% by weight Perfume 0 0.02% by weight A pressure-resistant aluminum aerosol container having a diameter of 13 mm and an internal volume of 15 ml was filled with 10 ml of the stock solution of the above formulation adjusted to a viscosity of 1000 centipoise, a valve was attached, and the temperature of the content was 25 ° C. and a hair treatment aerosol cosmetics and pressure filled with nitrogen gas so as to 6.0Kg / cm ^2.

At the ambient temperature of about 20 ° C. at the time of use, about 4 g of the above hair treatment aerosol cosmetic composition is applied to the wet hair after washing with a hair shampoo and the fingers are applied. When it was applied to the hair using it, a good treatment effect with warm feeling could be obtained. In addition, a good treatment effect was maintained even after the hair was dried with a dryer.

Example 2 Next, in the components of the hair treatment aerosol cosmetic composition of Example 1, polyethylene glycol was added with an average molecular weight of 20.
Aerosol cosmetic A was prepared in the same manner as in Example 1 except that the one having a degree of polymerization of 0 and the one having a degree of polymerization of 6000 were used.
7 types of G were manufactured and examined, and the results shown in Table 1 were obtained. In the examination, in order to examine the heating state during cold use, 15 A to G were added to a constant temperature water bath at 10 ° C.
After dipping and leaving for a minute, it was used for trial.

[0032]

[Table 1] From Table 1, even if the same formulation as in Example 1, the viscosity is 30
It can be seen that the products having a size of more than 00 centipoise have a poor thermal sensation, a poor ejection state, and a large amount of remaining injection.

Example 3 Hair pack aerosol cosmetic formulation: Polyethylene glycol (average molecular weight 200) 60.00% by weight Stearyl trimethyl ammonium chloride (63%) 5.00% by weight Lower silicone oil 1.00% by weight Cetyl alcohol 1. 00% by weight Polyvinylpyrrolidone 5.00% by weight 99% Denatured alcohol 27.97% by weight Perfume 0.03% by weight In a pressure vessel for aluminum aerosol having a container diameter of 20 mm and an internal volume of 25 ml, the above formulation adjusted to a viscosity of 2000 centipoise was used. 20 ml of the stock solution was filled, a valve was attached, and when the temperature of the content was 25 ° C., nitrogen gas was pressure-filled so that the content became 6.5 Kg / cm ² to obtain a hair pack aerosol cosmetic. After washing the hair with a shower at ambient temperature of about 23 ℃ at the time of use, wipe off the water gently with a towel, pick up about 5g of the above hair pack aerosol cosmetics, and apply it to the hair and skin. . After leaving it for a while, the hair was washed again. After the hair was washed, a pleasant refreshing feeling and smooth and moist hair were obtained.

Example 4 Body cleaner aerosol cosmetics Formulation: polyethylene glycol (average molecular weight 400) 78.00% by weight concentrated glycerin 10.00% by weight coconut oil fatty acid diethanolamide 10.00% by weight oleoyl sarcosine 2.00% by weight 5. A pressure resistant container for iron aerosol having a container diameter of 25 mm and an internal volume of 50 ml was filled with 40 ml of the stock solution of the above formulation adjusted to a viscosity of 2000 centipoise, a valve was attached, and the temperature of the content was set to 25 ° C. Carbon dioxide gas was pressure-filled to 5 kg / cm ² to obtain a body cleaner aerosol cosmetic. Take a shower on your body at ambient temperature of about 20 ℃ at the time of use, and apply about 5g of the above body cleaner aerosol cosmetics to the surface of your body to apply a good warm feeling and a good feeling of finishing. Obtained.

Regarding Examples 1, 3 and 4, it is appropriate that the temperature of the content itself is held in the hand of the aerosol container and shaken a little before the heat of hydration reaction is caused by discharging from the aerosol container. In order to examine whether or not the effect of being heated to the temperature and being kept close to the body temperature is sufficiently exerted, the aerosol cosmetics of Examples 1, 3 and 4 are immersed in a constant temperature water bath of 10 ° C. for 15 minutes. The test was carried out after standing, and the result showed that the same good heating effect as those listed in Examples 1, 3 and 4 was obtained.

[0036]

The aerosol cosmetic composition according to the present invention having the above-mentioned constitution is of the heating type and therefore exhibits the following effects. That is, when the aerosol cosmetic according to the present invention is a hair treatment aerosol cosmetic,
When an appropriate amount of the stock solution taken out from the aerosol container is applied to the hair or skin after washing with a shower, the content solution reacts with moisture such as residual water in the hair and heats up the heat. It works to spread and swell on the skin and skin in a warm state, where the steaming and wetting effects are immediately exhibited. In addition, since the active ingredient penetrates the hair and the skin at a high speed, the desired effect can be efficiently obtained in a short time without depending on the season and the ambient temperature.

Further, the aerosol cosmetic according to the present invention is
When used in the form of hair pack aerosol cosmetics, the undiluted liquid content is heated by the water remaining in the hair or the water in the air, so leave the undiluted liquid solution on the hair for a while. As a result, the warming-up steaming effect continues, and the spreading and swelling of the drug, which is the stock solution, effectively spreads to every corner, and like the hair treatment aerosol cosmetics described above, the season and surroundings. The hair can be effectively packed without being affected by the temperature.

Further, the aerosol cosmetic composition according to the present invention comprises
When used in the form of a body cleaner aerosol cosmetics, it is effective to first apply some sweat on the surface of the body with a shower or the like before applying the cosmetics.
That is, when the body cleaner aerosol cosmetics of the present invention is spread on the body surface, the moisture remaining on the body surface after washing with water heats the undiluted solution that has spread on the body surface, resulting in excellent penetrability and detergency. Since it enters the pores and removes dirt and skin residue, you can get smooth skin after washing. And, the cleaning power can be effectively obtained without being influenced by the season and the ambient temperature. Even when the body cleaner aerosol cosmetic is used without being washed with water, the same result as above is obtained because the body cleaner aerosol cosmetic absorbs water in the air to gradually generate heat during the process of spreading the body cleaner aerosol cosmetic.

Claims (3)

[Claims] 1. A stock solution containing 50 to 99.5% by weight of a hydration exothermic substance and 0.5 to 50% by weight of a cosmetic solution and having a viscosity of 2500 centipoise or less is sealed in a metal pressure-resistant container and chemically treated. Aerosol cosmetics which generate heat of hydration during use, characterized by being filled with a compressed gas which is not chemically active as a propellant. 2. The rising temperature at the time of heat of hydration shows a temperature increase of at least 5 ° C. within 5 seconds when the content stock solution and water are mixed at a ratio of 1: 1 (weight ratio). Aerosol cosmetics described. 3. The compressed gas is nitrogen gas, argon gas,
The aerosol cosmetics according to claim 1, wherein the aerosol cosmetics are helium gas and carbon dioxide gas alone or as a mixture.