KR101923743B1 - Foamable aerosol composition - Google Patents

Abstract

An object of the present invention is to provide a foamable aerosol product capable of preventing the corrosion of a metal pressure-resistant container without the inner bag due to the suppression of chloride ions while maintaining finger combing property in washing by the action of the cationic polymer do.
The present invention relates to a foamable aerosol product comprising [A] an anionic surfactant and a cationic polymer, and [B] a propellant packed in a pressure-resistant container, wherein the chloride ion concentration of the [A] Or less, and the pressure-resistant container is made of metal and has no inner pouch. The foamable aerosol product is preferably used as a shampoo. The nitrogen content of the cationic polymer is preferably 2.0% by mass or less. Further, the [A] stock solution further contains an amphoteric surfactant, and the content of the amphoteric surfactant in the [A] stock solution is preferably 3 mass% or less.

Description

Foamable aerosol product {FOAMABLE AEROSOL COMPOSITION}

The present invention relates to a foamable aerosol product.

In a hair treating agent such as a hair mousse or other cosmetic materials, the raw liquid and the injecting agent are charged in a pressure-resistant container from the convenience of use, and the raw liquid is injected by the injecting agent and foamed. A foamable aerosol product in which the foam thus formed is applied to perform cleaning of the hair is popular (see Japanese Patent Laid-Open Publication No. 2012-136485). In such a foamable aerosol product, a pressure-resistant container made of metal such as aluminum is usually used from the viewpoint of securing the pressure resistance of the container.

On the other hand, a cosmetic such as a shampoo usually contains a cationic polymer in a stock solution in order to improve the combability of the finger when washed. As a result, chloride ions as counter anions are liable to remain in the stock solution. This chloride ion is highly corrosive to metals. When applied to the aforementioned foamable aerosol product, therefore, it is necessary to provide a resin layer for preventing corrosion on the inner surface of the pressure-resistant container, or to provide an inner bag for inserting and filling the undiluted solution or the injectant (Japanese Patent Application Laid- -59089).

However, there is a fear that the chloride ion and the metal of the pressure-resistant container come into contact with each other due to the detachment of the resin layer, the penetration of chloride ions into the resin layer, or the breakage of the inner bag, and the corrosion of the container advances and the contents leak. In addition, the above-described conventional design for the pressure-resistant container leads to an increase in manufacturing cost.

Patent Document 1: Japanese Patent Laid-Open Publication No. 2012-136485 Patent Document 2: Japanese Patent Application Laid-Open No. 2004-59089

SUMMARY OF THE INVENTION The present invention has been made based on the above-described circumstances, and an object of the present invention is to provide a method for manufacturing a metal pressure vessel, which is capable of preventing corrosion of finger by the action of a cationic polymer, And to provide a foamable aerosol product capable of preventing the above-mentioned problems.

According to an aspect of the present invention,

(A) a stock solution containing an anionic surfactant and a cationic polymer (hereinafter also referred to as "[A] stock solution")), and

[B] Injection agent

Wherein the container is filled in a pressure-resistant container,

Wherein the chloride ion concentration of the [A] stock solution is 500 mass ppm or less,

Characterized in that the pressure-resistant container is made of metal and has no inner pouch.

This foamable aerosol product contains a [A] stock solution containing a cationic polymer, and the chloride ion concentration of the [A] stock solution is not more than 500 mass ppm, so that finger combing at the time of washing by action of a cationic polymer Corrosion of the metal pressure-resistant container having no inner bag can be prevented by suppressing the chloride ion in the [A] stock solution while maintaining the property.

The foamable aerosol product is preferably used as a shampoo. [A] The foamable aerosol product is suitable as a shampoo since the stock solution contains an anionic surfactant and a cationic polymer, and is excellent in cleansing property and finger combing property in washing.

The nitrogen content of the cationic polymer is preferably 2.0 mass% or less. Since the nitrogen content of the cationic polymer is in the above specific range, it is possible to suppress the concentration of the chloride ion as the counter ion, and as a result, corrosion of the metal pressure vessel can be prevented.

It is preferable that the [A] stock solution further contains a positive surfactant, and the content of the amphoteric surfactant in the [A] stock solution is 3% by mass or less. By setting the content of the amphoteric surfactant within the above-specified range, the concentration of the chloride ion as the counter ion can be further suppressed. As a result, corrosion of the above-described metal pressure-resistant container can be easily and reliably prevented.

[B] The injecting agent preferably contains carbon dioxide. [B] By containing carbon dioxide, the jet agent has a skin blood circulation promoting action.

The anionic surfactant preferably includes polyoxyethylene lauryl ether acetic acid salt and polyoxyethylene sulfosuccinate lauryl salt. As a result, the foamability such as easiness of forming foam and the sustainability of formed foam are better and the elasticity of foam is better.

The mass ratio of the polyoxyethylene sulfosuccinate lauryl salt to the polyoxyethylene lauryl ether acetic acid salt is preferably 0.5 or more and 3.0 or less. By setting the mass ratio to the above-mentioned specific range, lightness can be imparted to the foamy substance, and when used as a shampoo, volume feeling and softness of hair roots can be imparted to hair after hair drying.

The chloride ion concentration refers to the analytical value by ion chromatography (for example, ICS-2000 manufactured by Dionex equipped with anion exchange column " IonPacAS18 " manufactured by Dionex) is used to obtain an analysis value of the chloride ion concentration .). The nitrogen content of the cationic polymer refers to the content of nitrogen atoms contained in the cationic polymer, and a value based on the nitrogen determination method determined for each cationic polymer in the quasi-drug raw material standard is employed (unconfined cationic polymers A value based on the Kjellman method is adopted).

INDUSTRIAL APPLICABILITY The foamable aerosol product of the present invention can prevent corrosion of a metal pressure-resistant container without having an inner bag due to suppression of chloride ions while maintaining finger combing property when washed by the action of a cationic polymer.

<Foaming Aerosol Products>

The foamable aerosol product of the present invention comprises [A] stock solution, [B] propellant, and pressure resistant container. The foamable aerosol product can be suitably used as a shampoo since it contains an anionic surfactant and a cationic polymer in the [A] stock solution as described later, and is excellent in cleansing property and finger combing property in washing. Hereinafter, the foamable aerosol product will be described in detail.

[[A] original amount]

(A) The raw liquid contains an anionic surfactant and a cationic polymer, and water such as purified water is mixed with the aqueous liquid. [(A) The amount of water in the raw liquid is, for example, 70 mass% or more. Further, the [A] stock solution may contain an optional component as long as the effect of the present invention is not impaired.

[A] The chloride ion concentration of the stock solution is 500 mass ppm or less. [A] Since the chloride ion concentration of the undiluted solution is not more than 500 mass ppm, it is possible to prevent corrosion of the metal pressure-resistant vessel by suppressing chloride ions in the [A] stock solution. As a result, leakage of contents due to corrosion of the container can be prevented.

The chloride ion concentration of the raw solution [A] is preferably 300 mass ppm or less, and more preferably 100 mass ppm or less, from the viewpoint of corrosion prevention.

(Anionic surfactant)

The anionic surfactant is a component having cleaning properties such as foamability and removing scum such as scalp. The anionic surfactants may be used alone or in combination of two or more.

Examples of the anionic surfactant include acylamino acids or salts thereof (sodium salt, potassium salt, triethanolamine salt, etc.); Sodium coconut oil fatty acid, potassium coconut oil fatty acid, cocoyl itaconic acid or its salt (sodium salt, potassium salt, etc.); Polyoxyethylene lauryl ether sulfuric acid or salts thereof (sodium salt, potassium salt and the like); Polyoxyethylene lauryl ether acetic acid or its salt (sodium salt, potassium salt, etc.); Disodium alkylsulfosuccinate; Polyoxyethylene sulfo succinic acid or its salt (sodium salt, potassium salt, etc.); Lauroyl hydrolyzed silk sodium; Isostearic acid hydrolyzed silk AMP (2-amino-2-methyl-1-propanol salt of a condensate of isostearic acid and hydrolyzed silk); Cocoyl hydrolyzed soy protein potassium; Salts of cocoyl hydrolyzed collagen (sodium salts, potassium salts, etc.); Sodium tetradecenesulfonate; Polyoxyethylene lauryl ether phosphoric acid or its salt (sodium salt, potassium salt, etc.) and the like.

Among these, as the anionic surfactant, polyoxyethylene lauryl ether acetate (polyoxyethylene lauryl ether acetate, average addition mole number of polyoxyethylene is preferably 2 or more and 12 or less from the viewpoint of foaming property and foam quality And more preferably 2 or more and 6 or less), and polyoxyethylene sulfosuccinate lauryl salt (the average addition mole number of polyoxyethylene in the polyoxyethylene sulfosuccinate lauryl salt is preferably 2 or more and 12 or less, and more preferably 2 or less Or more and more preferably 6 or less), and more preferably both of them. For the same reason, polyoxyethylene lauryl ether acetic acid sodium salt is more preferable as polyoxyethylene lauryl ether acetic acid salt, and di-sodium polyoxyethylene sulfosuccinate lauryl is more preferable as polyoxyethylene sulfosuccinate lauryl salt.

The content of the anionic surfactant in the raw liquid [A] is preferably 3 mass% or more and 30 mass% or less, more preferably 5 mass% or more and 25 mass% or less, and more preferably 10 mass% And more preferably not less than 20% by mass.

When the anionic surfactant comprises a polyoxyethylene lauryl ether acetate salt and a polyoxyethylene sulfosuccinate lauryl salt, the weight ratio of the polyoxyethylene sulfosuccinate lauryl salt to the polyoxyethylene lauryl ether acetic acid salt is not particularly limited, More preferably 0.5 or more and 3.0 or less, more preferably 0.7 or more and 2.5 or less, and still more preferably 1.0 or more and 2.0 or less. By setting the mass ratio within the above range, lightness can be imparted to the foamy substance, and when used as a shampoo, volume feeling and softness of hair roots can be imparted to the hair after drying the hair.

(Cationic polymer)

The cationic polymer is a component that improves combing property of fingers when washed. These cationic polymers may be used alone or in combination of two or more.

Examples of the cationic polymer include cationic cellulose, cationized guar gum, vinyl pyrrolidone, N, N-dimethylaminoethyl methacrylic acid copolymer diethyl sulfate, acrylamide · acrylic acid · dimethyldiallylammonium chloride copolymer, N, N-dimethylaminoethylmethacrylate diethylsulfate, N, N-dimethyl acrylamide · dimethacrylic acid polyethylene glycol copolymer, and the like.

The content of the cationic polymer in the raw solution [A] is preferably 0.01 mass% or more and 2 mass% or less, more preferably 0.1 mass% or more and 1 mass% or less. When the content of the cationic polymer is within the above range, the finger combing property can be effectively increased.

The nitrogen content of the cationic polymer is preferably 2.0 mass% or less. By setting the nitrogen content of the cationic polymer within the above range, it is possible to suppress the chloride ion as a counter ion, and as a result, corrosion of the metal pressure vessel can be prevented.

The nitrogen content of the cationic polymer is preferably 1.8% or less, and more preferably 1.6% or less, from the viewpoint of corrosion prevention.

(Amphoteric surfactant)

The amphoteric surfactant is a surfactant having an acidic functional group and an alkaline functional group in the same molecule.

Examples of the amphoteric surfactant include amidopropyl betaine-type amphoteric surfactants such as lauric acid amidopropyl betaine (lauramidopropyl betaine), palm oil fatty acid amidopropyl betaine, isostearic acid amidopropyl betaine (isosteara Laminopropyl betaine), linolenic acid amidopropyl ester, palm oil fatty acid amidopropyl betaine, and the like.

Examples of the imidazoline type amphoteric surfactant include undecyl-N-hydroxyethyl-N-carboxymethylimidazolinium betaine, 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine and the like .

Examples of the sulfobetaine type amphoteric surfactant include sodium N-alkyl-N, N-dimethylammonium N-propylsulfonate, sodium N-alkyl-N, N-dimethylammonium N- (2- hydroxypropyl) Fatty acid amidopropyl-N, N-dimethylammonium-N- (2-hydroxypropyl) sulfonate, and the like.

As the amidoamine oxide type amphoteric surfactant, lauric acid amidopropyldimethylamine oxide and the like can be mentioned.

The content of the amphoteric surfactant in the raw solution [A] is preferably 3 mass% or less, more preferably 2 mass% or less, and further preferably 1 mass% or less. By setting the content of the amphoteric surfactant within the above range, it is possible to suppress the chloride ion as a counter ion, and as a result, it is possible to prevent the corrosion of the metal pressure-resistant container and to prevent the leakage of the contents due to corrosion of the container. By setting the content to the above range, the viscosity of the [A] raw liquid can be suppressed, and the foamability is improved.

(Optional component)

Examples of arbitrary components that may be contained in the [A] stock solution include known shampoo ingredients. Examples of the optional components include nonionic surfactants, lower alcohols, polyhydric alcohols, saccharides, high molecular compounds, amino acids, animal and plant extracts, inorganic compounds, fragrances and preservatives. The respective optional components may be used alone or in combination of two or more.

(Formulation)

[A] The raw liquid may be a liquid. The viscosity of the liquid [A] liquid is measured using a B-type viscometer (temperature: 25 ° C, rotor: set appropriately according to viscosity, rotor rotation speed: 60 rpm) More preferably not less than 10 mPa s and not more than 1,000 mPa 하고, more preferably not less than 20 mPa s and not more than 500 mPa 하며, and still more preferably not less than 30 mPa s and not more than 400 mPa..

(pH)

[A] The pH of the stock solution may be slightly acidic. By keeping the pH slightly acidic, it is possible to inhibit the carbon dioxide from becoming a carbonate to increase the blood circulation promoting effect, and it is possible to suppress the deterioration of the foaming property and the discharging property due to the increase in viscosity accompanied by the decrease in pH. The pH of the [A] stock solution is preferably 4.0 or more and 6.8 or less, more preferably 5.0 or more and 6.5 or less.

[[B] injection agent]

[B] The injecting agent preferably contains carbon dioxide. [B] Injection agent has carbon dioxide promoting action. Further, the [B] jetting agent may contain other components than carbon dioxide within a range that does not impair the effect of the present invention.

Examples of other components other than carbon dioxide include liquefied gas such as liquefied petroleum gas (hereinafter also referred to as &quot; LPG &quot;), a mixture of propane, n-butane and i- , Nitrous oxide, compressed gas such as air, and the like. Of these, liquefied petroleum gas is preferable.

The mass ratio of the [A] raw liquid to the [B] jet agent is preferably from 70:30 to 99: 1, more preferably from 80:20 to 98: 2, 96: 4 is more preferable.

[Pressure vessel]

The pressure-resistant container is made of metal and has no inner pouch. As the metal used for forming the pressure-resistant container, for example, aluminum, aluminum alloy, bait, steel and the like can be given. Further, a resin layer may be laminated on the inner surface of the pressure-resistant container. As described above, this foamable aerosol product can prevent corrosion even if it does not have an inner bag because the chlorine ion concentration of the [A] stock solution is low and the corrosiveness is suppressed.

&Lt; Process for producing foamable aerosol product >

This foamable aerosol product can be prepared by filling the pressure vessel with the [A] raw liquid and the [B] jet agent.

[Example]

Hereinafter, the present invention will be described concretely with reference to examples, but the present invention is not limited to these examples. A method of measuring the property value is shown below.

[Viscosity]

Measurement was carried out under the following measurement conditions using a B-type viscometer manufactured by Toki-Mex.

Measuring temperature: 25 ° C

Rotor: Set according to viscosity

Rotation speed of rotor: 60 rpm

Reading value of viscosity: Value after 60 seconds from the start of measurement

<Preparation of [A] stock solution>

[A] Each ingredient used for blending with water for the preparation of the stock solution and the blending amount in the [A] stock solution are shown below. In Table 1, Table 3 and Table 5, &quot; - &quot; indicates that the corresponding components are not blended. Formulations and viscosities of the prepared stock solutions are shown together in the tables.

(Anionic surfactant)

Polyoxyethylene lauryl ether Sodium acetate

2-sodium polyoxyethylene sulfosuccinate lauryl

Cocoyl glutamate Na

Lauroyl aspartate Na

(Cationic polymer)

Cationized cellulose

N, N-dimethylaminoethylmethacrylate diethylsulfate · N, N-dimethyl acrylamide · dimethacrylic acid polyethylene glycol copolymer

(Amphoteric surfactant)

Isostearamidopropyl betaine

Laura midi propyl betaine

(Nonionic surfactant)

Polyglyceryl monolaurate

Polyoxypropylene (1) Palm oil fatty acid monoisopropanolamide

(Other components)

Polyoxyethylene dioleate methyl glucoside

Polyethylene glycol 1540

1-menthol

1,3-butylene glycol

Anhydrous ethanol

Citric acid

Spices

&Lt; Embodiment (1) >

Each component was mixed with water based on the compounding amount shown in Table 1 to prepare a [A] stock solution. Each of the raw liquid and the [B] jetting agent composed of LPG and carbon dioxide was filled in a pressure-resistant container made of aluminum at the blend amount shown in Table 2, respectively, to obtain a foamable aerosol product of each example.

Using the foamable aerosol product of each of the above Examples, the [A] raw liquid was sprayed (injection pressure at 25 캜: 0.65 MPa), and three professional panelists evaluated the foaming property ), Bubble persistence (visual evaluation of the time for which bubbles can be maintained after discharge into the hands), and foam elasticity (evaluation of tactile sense of repulsion and elasticity when gripped after hand delivery) Respectively. The evaluation results are shown together in Table 2. In addition, the evaluation results in Table 2 indicate relative evaluations to Example 2 (indicated as &quot; criteria &quot; in Table 2).

◎: Very good (3 out of 3 people are good)

○: Good (two out of three are good)

?: Bad (two out of three people are bad)

X: very bad (three out of three are bad)

As can be seen from Table 2, a foamable aerosol product (Example 1a) containing sodium polyoxyethylene lauryl ether acetate as the anionic surfactant and disodium lauryl polyoxyethylene sulfosuccinate (Example 1a) was prepared by adding sodium cocoyl glutamate Compared to the blend of lauroyl aspartate Na (Example 1b), both foaming, foam persistence and foam resilience were very good results.

&Lt; Embodiment (2) >

Each component was mixed with water based on the compounding amount shown in Table 3 to prepare a [A] stock solution. Each of the raw liquid and the [B] jetting agent composed of LPG and carbon dioxide was filled in a pressure-resistant container made of aluminum at the blend amount shown in Table 4, respectively, to obtain the foamable aerosol product of each example.

The spraying liquid (spraying pressure at 25 ° C: 0.65 MPa) was sprayed using the foamable aerosol product of each of the above examples, and three professional panelists were used to spray foam, The foam elasticity was evaluated according to the following criteria. The evaluation results are shown in Table 4 together. The results of evaluation in Table 4 are the results of relative evaluation in Example (2).

◎: Very good (3 out of 3 people are good)

○: Good (two out of three are good)

?: Bad (two out of three people are bad)

X: very bad (three out of three are bad)

As can be seen from Tables 3 and 4, the non-amphoteric surfactant is low in viscosity (compared with Example 2c and Examples 2d and 2e), resulting in good foamability.

&Lt; Embodiment (3) >

Based on the blending amounts shown in Table 5, the respective components were mixed with water to prepare a [A] stock solution. Each of the undiluted solution and the [B] jetting agent composed of LPG and carbon dioxide were filled in a pressure-resistant container made of aluminum at the blend amount shown in Table 6, respectively, to obtain the foamable aerosol product of each example.

Using the foamable aerosol product of each of the above examples, [A] the crude liquid was sprayed onto the hair (jet pressure at 25 ° C: 0.65 MPa), treated with a treatment containing a cationic surfactant, dried, By the list of three people, the quality of foam (evaluation of tenderness of softness and lightness of bubble when we hold after dispensing in hand), volume feeling (lightness and slippery of finger combing when hand was passed from hair root to hair tip Tactile evaluation) and the softness of the hair (between the middle of the hair and the tip of the hair, and the tactile evaluation of the softness at the time of holding) were evaluated according to the following criteria. The evaluation results are shown in Table 6 together. The evaluation results in Table 6 are the relative evaluation results in Example (3).

◎: Very good (3 out of 3 people are good)

○: Good (two out of three are good)

?: Bad (two out of three people are bad)

X: very bad (three out of three are bad)

As can be seen from Tables 5 and 6, as the anionic surfactant, when the content of disodium polyoxyethylene sulfosuccinate laurylate is higher than that of polyoxyethylene lauryl ether acetic acid sodium salt, The softness of the hair is all good.

The evaluation results of the above-described embodiments (1) to (3) are relative to each other and do not indicate good or bad in practical use.

&Lt; Evaluation of Chloride Ion Concentration in [A]

[Chloride ion concentration]

The chloride ion concentration in the [A] stock solution in the foamable aerosol product of each example was analyzed using "ICS-2000" manufactured by Dionex equipped with anion exchange column "IonPacAS18" manufactured by Dionex, Respectively. Table 7 shows the relationship between the nitrogen content of the cationic polymer and the chloride ion concentration of the aqueous solution of 1% by mass of the cationic polymer.

As can be seen from Table 7, as the nitrogen content decreases, the chloride ion concentration decreases. This can be realized by selecting a cationic polymer having a small nitrogen content and setting the amount of the cationic polymer in order to suppress the chloride ion concentration of the [A] stock solution to be low (to be 500 mass ppm or less) .

The present invention can provide a foamable aerosol product capable of preventing the corrosion of a metal pressure-resistant container without having an inner bag due to the suppression of chloride ions while maintaining finger combing property at the time of washing by the action of the cationic polymer have.

Claims (7)

[A] a stock solution comprising an anionic surfactant and a cationic polymer, and
[B] Injection agent
Wherein the container is filled in a pressure-resistant container,
Wherein the chloride ion concentration of the [A] stock solution is 500 mass ppm or less,
In the above [A], the anionic surfactant comprises polyoxyethylene lauryl ether acetic acid salt and polyoxyethylene sulfosuccinate lauryl salt, and the polyoxyethylene lauryl ether acetic acid of the polyoxyethylene sulfosuccinate lauryl salt The mass ratio to salt is not less than 0.7 and not more than 3.0,
Wherein the pressure-resistant container is made of metal and has no inner bag,
Examples of the cationic polymer include cationic cellulose, cationized guar gum, vinyl pyrrolidone · N, N-dimethylaminoethyl methacrylic acid copolymer diethyl sulfate, acrylamide · acrylic acid · dimethyldiallylammonium chloride copolymer, and N , N, N-dimethylaminoethylmethacrylate, diethylsulfate, N, N-dimethyl acrylamide, dimethacrylic acid polyethylene glycol copolymer,
Characterized in that the foamable aerosol product is used as a shampoo. The foamable aerosol product according to claim 1, wherein the viscosity of the [A] stock solution is 1000 mPa 揃 s or less. The foamable aerosol product according to claim 1 or 2, wherein the nitrogen content of the cationic polymer is 2.0% by mass or less. 3. The foamable aerosol product according to claim 1 or 2, wherein the [A] stock solution further contains an amphoteric surfactant, and the content of the amphoteric surfactant is 3 mass% or less. 3. The foamable aerosol product according to claim 1 or 2, wherein the [B] jet agent comprises carbon dioxide. The polyoxyethylene lauryl ether acetic acid salt according to Claim 1 or 2, wherein the polyoxyethylene lauryl ether acetic acid salt comprises polyoxyethylene lauryl ether acetic acid salt having an average addition mole number of polyoxyethylene of 2 to 12,
Wherein the polyoxyethylene sulfosuccinate lauryl salt comprises polyoxyethylene sulfosuccinate lauryl salt having an average addition mole number of polyoxyethylene of 2 to 12. delete