JP2013063939A - Aerosol composition for forming foam - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an aerosol composition for forming foam formable of a foam-like discharged substance having stringiness without using a polymeric substance, and thereby, facilitating production.SOLUTION: The aerosol composition for forming foam is formed of a stock solution containing water, menthol and a surfactant, and a propellant. In the stock solution, a content ratio of the menthol is 0.10-1.00 mass%, the content ratio of the surfactant is 15.05-21.50 mass%, and the foam-like discharged substance having stringiness is formed.

Description

  The present invention relates to a foam-forming aerosol composition, and more particularly to a foam-forming aerosol composition that forms a foam-like discharge having a stringiness.

Conventionally, as a foam forming aerosol composition for forming a foam having spinnability as a discharged material, a composition comprising a stock solution containing a polymer substance and a propellant is known (for example, Patent Document 1 or (See Patent Document 2).
In such a foam-forming aerosol composition, it is necessary to dissolve a polymer substance in a liquid medium during the production process. Therefore, a water-soluble medium is used as a liquid medium and a high degree of polymerization as a polymer substance. In order to obtain a stock solution, for example, after obtaining a dispersion in which a water-soluble polymer substance is dispersed in an aqueous medium at room temperature, the dispersion is added. Since it is necessary to dissolve the water-soluble polymer substance by heating or to dissolve the water-soluble polymer substance in an aqueous medium at room temperature over a long time without heating, the preparation of the stock solution is complicated There is a problem that it is or takes a long time.

JP 2006-342119 A JP 2010-265241 A

  The present invention has been made based on the circumstances as described above, and the object thereof is to form a foam-like discharge material having a spinnability without using a polymer substance, and therefore, easily. An object of the present invention is to provide a foam-forming aerosol composition that can be produced.

The foam forming aerosol composition of the present invention comprises a stock solution containing water, menthol and a surfactant, and a propellant.
In the stock solution, the content of the menthol is 0.10 to 1.00% by mass, and the content of the surfactant is 15.05 to 21.50% by mass,
It is characterized by forming a foam-like discharge having spinnability.

  In the foam forming aerosol composition of the present invention, the surfactant contains an anionic surfactant, a nonionic surfactant and an amphoteric surfactant.

  In the foam forming aerosol composition of the present invention, the content ratio of the anionic surfactant in the stock solution is 8.40 to 12.00% by mass, and the content ratio of the nonionic surfactant is 3. It is 50-5.00 mass%, and it is preferable that the content rate of the said amphoteric surfactant is 3.15-4.50 mass%.

According to the foam forming aerosol composition of the present invention, the stock solution contains water, menthol and a surfactant, and further contains menthol and a surfactant in a specific ratio. Due to the action of menthol, the foam-like discharge formed has a spinnability, so that a foam-like discharge having a spinnability can be formed without using a polymer substance.
Therefore, the foam-forming aerosol composition of the present invention does not require the use of a polymer substance as a constituent of the stock solution in order to obtain spinnability in the foam-like discharge product to be formed. Since the stock solution can be prepared without performing a complicated operation or a time-consuming operation, it can be easily produced as compared with a foam-forming aerosol composition containing a polymer substance.

The foam-forming aerosol composition of the present invention comprises an undiluted solution containing water, menthol and a surfactant, and a propellant, and is filled into an aerosol container comprising a pressure-resistant container equipped with an injection valve, thereby producing an aerosol product. It forms a foam-like discharge having a spinnability.
Here, in the present specification, “having spinnability” means having a property of extending a finger when a finger is put into a foam-like discharge and the finger is pulled up, Specifically, a case is shown in which 0.5 g of foam-like discharge material formed on the palm is spread with a fingertip and then the finger is lifted upward, and the distance where the discharge material is connected is 2 cm or more.

  Hereinafter, the component which comprises the aerosol composition for foam formation of this invention is demonstrated.

  The stock solution constituting the foam-forming aerosol composition of the present invention comprises water, menthol, and a surfactant as essential components, and the surfactant in a proportion of 15.05 to 21.50% by mass and menthol. Is contained at a ratio of 0.10 to 1.00% by mass and optionally contains optional components.

  As water that is an essential component of the stock solution, purified water or ion-exchanged water is used.

  The content ratio of water is preferably 76.50 to 83.85% by mass, and more preferably 78.65 to 81.70% by mass in 100% by mass of the stock solution.

  If the water content is excessive, there may be a risk that the stock solution cannot contain other components in a sufficient ratio. On the other hand, when the content ratio of water is too small, there is a possibility that the spinnability may not be obtained in the foam-like discharge formed due to the increase in the viscosity of the stock solution.

  The surfactant, which is an essential component of the stock solution, needs to contain an anionic surfactant, a nonionic surfactant, and an amphoteric surfactant.

  Specific examples of the anionic surfactant constituting the surfactant which is an essential component of the stock solution include, for example, sodium lauryl sulfate, triethanolamine lauryl sulfate, ammonium lauryl sulfate, polyoxyethylene (3) lauryl ether sulfate triethanolamine Polyoxyethylene alkyl ether sulfate triethanolamine, polyoxyethylene (1) sodium lauryl ether sulfate, polyoxyethylene (2) sodium lauryl ether sulfate, polyoxyethylene (3) sodium lauryl ether sulfate, polyoxyethylene (4 , 5) Lauryl ether acetic acid, polyoxyethylene (4,5) sodium lauryl ether acetate, polyoxyethylene (10) lauryl ether acetic acid, polyoxyethylene (10) lauryl ether vinegar Sodium and the like. These can be used alone or in combination of two or more.

  Specific examples of the nonionic surfactant constituting the surfactant which is an essential component of the stock solution include, for example, (lauryl / myristyl) glycol hydroxypropyl ether, lauryl glycol hydroxypropyl ether, polyoxypropylene (1) coconut oil fatty acid Monoisopropanolamide, lauric acid diethanolamide, lauric acid myristic acid diethanolamide, myristic acid diethanolamide, stearic acid diethanolamide, oleic acid diethanolamide, coconut oil fatty acid monoethanolamide, stearic acid monoethanolamide, coconut oil fatty acid monoisopropanolamide , Lauric acid monoisopropanolamide, polyoxyethylene coconut oil fatty acid monoethanolamide, polyoxyethylene lauric acid monoethanolamide Such as soil and the like. These can be used alone or in combination of two or more.

  Specific examples of the amphoteric surfactant constituting the surfactant that is an essential component of the stock solution include, for example, lauric acid amidopropyl acetate betaine, coconut oil fatty acid amidopropyl betaine, lauric acid amidopropyl betaine, myristic acid amidopropyl betaine, Examples thereof include palm kernel oil fatty acid amidopropyl betaine, lauric acid amidopropyl hydroxysulfobetaine, lauric acid amidopropyldimethylamine oxide, and hydroxyalkyl (C12-14) hydroxyethylmethylglycine. These can be used alone or in combination of two or more.

  The content ratio of the surfactant is required to be 15.05 to 21.50% by mass, preferably 17.20 to 19.40% by mass in 100% by mass of the stock solution.

  When the content ratio of the surfactant is too large and too small, in any case, it is not possible to obtain the spinnability in the foam-like discharge product to be formed.

Moreover, it is preferable that the content rate of the anionic surfactant which comprises surfactant is 8.40-12.00 mass% in 100 mass% of stock solutions, More preferably, it is 9.60-10.80 mass. %.
When the content ratio of the anionic surfactant in the stock solution is too large or too small, in any case, there is a possibility that the foaming discharge formed may fail to obtain the spinnability.

Further, the content of the nonionic surfactant constituting the surfactant is preferably 3.50 to 5.00% by mass, more preferably 4.00 to 4.50% by mass in 100% by mass of the stock solution. %.
When the content ratio of the nonionic surfactant in the stock solution is too large or too small, in any case, there is a concern that the formed foam-like ejected material cannot obtain the spinnability.

Further, the content of the amphoteric surfactant constituting the surfactant is preferably 3.15 to 4.50% by mass, more preferably 3.60 to 4.05% by mass in 100% by mass of the stock solution. It is.
When the content ratio of the amphoteric surfactant in the stock solution is too large or too small, in any case, there is a concern that the foamed discharge formed may not have spinnability.

Menthol, which is an essential component of the stock solution, acts as a spinnable expression component for expressing spinniness in the foamy discharge formed in a system containing a surfactant in a specific ratio. .
Examples of menthol include l-menthol.

  The content ratio of menthol is required to be 0.10 to 1.00% by mass, preferably 0.30 to 0.70% by mass in 100% by mass of the stock solution.

  If the menthol content is too large or too small, in any case, there is a risk that the foamed discharge formed will not have spinnability.

  The stock solution of the foam forming aerosol composition according to the present invention preferably contains a solvent for dissolving menthol such as ethanol, ether and liquid paraffin.

In the stock solution of the foam forming aerosol composition according to the present invention, optional components may be contained as necessary in addition to water, menthol and surfactant, which are essential components.
Specific examples of the optional component include the above-mentioned solvents (menthol solvents such as ethanol, ether, and liquid paraffin), as well as active ingredients according to the purpose of use, preservatives, and the like.

  The stock solution composed of the above essential components and optional components preferably has a viscosity at a temperature of 20 ° C. of 1000 to 10000 mPa · s, more preferably 5000 to 9000 mPa · s.

  From the relationship with the propellant described later, the content ratio of the stock solution containing the above components is preferably 90 to 99% by mass in 100% by mass of the entire aerosol composition.

  Examples of the propellant constituting the foam-forming aerosol composition of the present invention include liquefied petroleum gas and liquefied gas such as dimethyl ether, and these can be used alone or in combination of two or more.

  It is preferable that the content rate of a propellant is 1-10 mass% in 100 mass% of the whole aerosol composition.

  When the content ratio of the propellant is excessive and the content ratio of the undiluted solution is too small, the amount of the undiluted solution that is injected with respect to the total injection amount is relatively small, so the amount of adhesion to the application location is small, Moreover, there is a possibility that the discharged material cannot be discharged in the form of foam. On the other hand, when the content ratio of the propellant is excessively small and the content ratio of the stock solution is excessively large, there is a possibility that the discharged material cannot be discharged in the form of foam.

According to the foam forming aerosol composition of the present invention, the stock solution contains water, menthol and a surfactant, and further contains menthol and a surfactant in a specific ratio. Due to the action of menthol, the foam-like discharge formed has a spinnability, so that a foam-like discharge having a spinnability can be formed without using a polymer substance.
Therefore, the foam-forming aerosol composition of the present invention does not require the use of a polymer substance as a constituent of the stock solution in order to obtain spinnability in the foam-like discharge product to be formed. For example, after obtaining a dispersion in which a polymer substance is dispersed in an aqueous medium at room temperature, the dispersion is heated to dissolve the polymer substance, or for a long time without heating. It is possible to prepare a stock solution without requiring a long time by a cold process without performing a complicated or time-consuming operation such as dissolving the polymer material in an aqueous medium at room temperature by applying It can be easily produced as compared with the foam-forming aerosol composition.

  In addition, in the foam forming aerosol composition of the present invention, foam formation is obtained because a foam-like discharge is formed by the action of a surfactant and menthol without using a polymer substance. Since it is easy to adjust the properties, it is possible to obtain a good foam-forming property as well as a stringiness in a foam-like discharged product, and even when the foam-forming aerosol composition is stored for a long period of time. Since the good foam-forming property and the spinnability in the foam-like discharged product are maintained without being impaired, high storage stability is obtained.

  Furthermore, in the foam forming aerosol composition of the present invention, since the foam-like discharge formed has spinnability, it is excellent in shape retention and does not cause dripping at the application site. In addition, since high adhesion can be obtained, especially when it is used for the human body, it is well-familiar with the skin, and even if a small amount is applied to the fingertip or the like, it is easy to spread.

  The foam-forming aerosol composition of the present invention can be used for various applications, and specifically, for example, hair care agents such as a facial cleanser, shaving agent, shampoo, laundry detergent and kitchen detergent. It can be used as a detergent, insect repellent or the like.

  Examples of the present invention will be described below, but the present invention is not limited thereto.

[Examples 1 to 12 and Comparative Examples 1 to 4]
First, raw material raw materials are prepared according to the formulation shown in Tables 1 and 2, and water in the raw materials is charged into a beaker while stirring at a rotation speed of 500 rpm using a propeller stirrer at room temperature. A stock solution was prepared by a cold process in which l-menthol was dissolved in ethanol in advance at room temperature and a surfactant was added.
Next, by filling 96.5% by mass of the obtained stock solution and 3.5% by mass of a propellant composed of liquefied petroleum gas (LPG) into an aerosol container composed of a pressure-resistant container equipped with an aerosol valve, An aerosol product was made.
Here, Comparative Example 1 is an example in the case where the surfactant content is too small in the stock solution, and Comparative Example 2 is an example in which the surfactant content in the stock solution is excessive. Example 3 is an example where the menthol content is excessive in the stock solution, and Comparative Example 4 is an example where the menthol content is too small in the stock solution.

  About each of the aerosol products produced by the obtained Examples 1-12 and Comparative Examples 1-4, when the content was discharged, the discharge thing of any aerosol product was a foam-like thing.

<Evaluation test>
The following evaluation was performed about each of the aerosol products produced by said Examples 1-12 and Comparative Examples 1-4. The results are shown in Tables 1 and 2.

(Spinning property in foamy discharge)
The content of the aerosol product produced in each of the examples and comparative examples was discharged on the palm by 0.5 g, the foamy discharge formed on the palm was spread out with the fingertip, and then the finger was raised upward. Checking the spinnability of the foam-like discharge by a method of measuring the distance at which the discharge is connected (hereinafter also referred to as “stringing distance”), and the case where the stringing distance is 5 cm or more “A”, assuming that the spinnability of the discharged product is extremely good, and “B”, when the spine distance is 3 cm or more and less than 5 cm, indicating that the foamy discharge product has good spinnability. "C" when the stringing distance is 2 cm or more and less than 3 cm, assuming that the foam-like discharge has a stringing property, and when the stringing distance is less than 2 cm, the foam-like discharge As having no stringiness It was evaluated as D ".

In Tables 1 and 2, polyoxyethylene (3) lauryl ether triethanolamine sulfate is used as the anionic surfactant, and (lauryl / myristyl) glycol hydroxypropyl ether (“Visco Safe” is used as the nonionic surfactant. LMPE (100% pure), manufactured by Kawaken Fine Chemical Co., Ltd., and amphoteric surfactants include amidopropyl betaine laurate ("softazoline LPB (30% pure)", Kawaken Fine Chemical Co., Ltd. “Menthol” is “l-menthol” manufactured by Takasago International Corporation, and “Ethanol” is “95 degree synthetic unmodified alcohol” (manufactured by Nippon Alcohol Sales Co., Ltd.). Was used.
In the same table, the blending ratio of nonionic surfactant, amphoteric surfactant and ethanol (content ratio in the stock solution) is “Visco Safe LMPE (pure content 100%)” (manufactured by Kawaken Fine Chemical Co., Ltd.), “ This is a value obtained by converting the blending amounts of “SOFTAZOLINE LPB (pure 30%)” (manufactured by Kawaken Fine Chemical Co., Ltd.) and “95 degree synthetic unmodified alcohol” (manufactured by Nippon Alcohol Sales Co., Ltd.).

From the results of Tables 1 and 2, the aerosol compositions according to Example 1 to Example 12 are such that the ejected matter is formed in a foam shape, and the foam-like ejected material has spinnability. confirmed.
On the other hand, since the aerosol composition according to Comparative Example 1 has an excessively small surfactant content, no spinnability can be obtained in the foam-like discharge, and the aerosol composition according to Comparative Example 2 is Since the content ratio of the surfactant is excessive, the spinnability was not obtained in the foam-like discharged matter. Moreover, since the aerosol composition according to Comparative Example 3 has an excessive content ratio of menthol, the spinnability cannot be obtained in the foam-like discharge product, and the aerosol composition according to Comparative Example 4 has the content ratio of menthol. Is too small, the spinnability was not obtained in the foam-like discharge.
Moreover, it was confirmed that the aerosol composition which concerns on Example 1- Example 12 can be easily manufactured, without requiring a long time by a cold process.

Furthermore, the aerosol products according to Example 1 to Example 12 in which the evaluation test related to the spinnability in the foam-like discharged material was performed were stored for a long period (specifically, for 3 months) under ambient conditions of room temperature and humidity. After that, when the contents were discharged, it was confirmed that all the aerosol product discharges were foamy, and the foamed discharges had the same spinnability as before storage. .

Claims (3)

It consists of a stock solution containing water, menthol and surfactant, and a propellant.
In the stock solution, the content of the menthol is 0.10 to 1.00% by mass, and the content of the surfactant is 15.05 to 21.50% by mass,
A foam-forming aerosol composition characterized by forming a foam-like discharge having a spinnability.   The foam forming aerosol composition according to claim 1, wherein the surfactant contains an anionic surfactant, a nonionic surfactant, and an amphoteric surfactant.   In the stock solution, the content ratio of the anionic surfactant is 8.40 to 12.00 mass%, the content ratio of the nonionic surfactant is 3.50 to 5.00 mass%, and the amphoteric The foam-forming aerosol composition according to claim 2, wherein the content of the surfactant is from 3.15 to 4.50% by mass.