Acid-containing emulsion composition

Abstract

To provide an oxidant-containing emulsion composition having good long-term stability of hydrogen peroxide under a high temperature condition and long-term emulsion stability under a high temperature condition.SOLUTION: There is provided an oxidant-containing emulsion composition which is used by mixing with a composition comprising at least an alkali agent at the time of use and comprises (A) a chelating agent, (B) phenoxyethanol, (C) a nonionic surfactant having an HLB of less than 15, (D) a nonionic surfactant having an HLB of 15 or more, (E) water, (F) a hydrocarbon oil and (G) a higher alcohol having 14 to 22 carbon atoms, wherein the mass ratio (A) / (B) of the component (A) to the component (B) is 0.25 to 200 and the mass ratio (F) / ((C)+(D)) of the component (F) to the component (C) and the component (D) is 0.04 to 7.69.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to an oxidant-containing emulsion composition.

Background Art

[0002] As hair dyes, oxidative hair dyes, hair removers, hair bleaches, hair removal and bleaching agents, etc. are known, and are prepared by mixing two or more agents at the time of use. As the second agent used in hair dyes, an oxidant-containing emulsion composition is generally used for the purpose of changing the color of hair or decomposing melanin pigments in hair to make the hair look brighter.

[0003] Conventionally, hydrogen peroxide has been used as an oxidant in oxidant-containing emulsion compositions. Hydrogen peroxide is unstable and easily decomposes by releasing oxygen, and it is particularly difficult to store for a long time under high-temperature conditions. Therefore, hydroxyethanediphosphonic acid is used as a stabilizer for suppressing the decomposition of hydrogen peroxide even when the oxidant-containing emulsion composition is stored for a long time under high-temperature conditions (for example, Patent Documents 1 and 2).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the prior art, although maintaining hydrogen peroxide in an oxidant-containing emulsion composition stably for a long period under high-temperature conditions has been considered, the emulsion stability of the oxidant-containing emulsion composition has not been considered. When an oxidant-containing emulsion composition containing an oily component is stored for a long period under high-temperature conditions as a means for reducing damage to hair caused by hair dyes, the uniform emulsion state is impaired, the oily component cannot be uniformly applied to the hair, and there is a risk that the damage to the hair cannot be reduced.

[0006] The present invention has been made in view of the above circumstances, and an object thereof is to provide an oxidant-containing emulsion composition in which hydrogen peroxide and the emulsion state are stable even when stored for a long period under high-temperature conditions.

Means for Solving the Problems

[0007] As a result of intensive studies to solve the above problems, the present inventor has found that an oxidant-containing emulsion composition used by mixing with a composition containing at least an alkali agent at the time of use, which contains (A) a chelating agent, (B) phenoxyethanol, (C) a nonionic surfactant having an HLB of less than 15, (D) a nonionic surfactant having an HLB of 15 or more, (E) water, (F) a hydrocarbon oil, and (G) a higher alcohol having 14 to 22 carbon atoms, wherein the mass ratio (A) / (B) of the component (A) to the component (B) is 0.25 to 200, and the mass ratio (F) / ((C)+(D)) of the component (F) to the components (C) and (D) is 0.04 to 7.69, whereby the long-term stability of hydrogen peroxide and the emulsion state under high-temperature conditions is good, and the present invention has been completed.

Effects of the Invention

[0008] According to the present invention, an oxidant-containing emulsion composition having good long-term stability of hydrogen peroxide and the emulsion state under high-temperature conditions can be obtained.

Modes for Carrying Out the Invention

[0009] Hereinafter, the present invention will be described in detail. The unit indicating the content is all mass% unless otherwise specified.

[0010] In this specification, "high temperature" refers to 50°C, and "long term" refers to 3 months.

[0011] The oxidant-containing emulsion composition according to the present invention contains (A) a chelating agent from the viewpoint of the long-term stability of hydrogen peroxide under high-temperature conditions.

[0012] The component (A) used in the present invention is not particularly limited, and examples thereof include organic phosphonic acid-based chelating agents, aminocarboxylic acid-based chelating agents, or hydroxycarboxylic acid-based chelating agents. The component (A) may contain one or more kinds.

[0013] Examples of the organic phosphonic acid-based chelating agent include hydroxyethanediphosphonic acid, nitrilotrimethylenephosphonic acid, ethylenediaminetetramethylenephosphonic acid, or salts thereof. Among them, from the viewpoint of the long-term stability of hydrogen peroxide under high-temperature conditions, hydroxyethanediphosphonic acid, or a salt thereof is preferable.

[0014] Examples of the aminocarboxylic acid-based chelating agent include ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, triethylenetetraminehexaacetic acid, hydroxyethylethylenediaminetriacetic acid, hydroxyethyliminodiacetic acid, methylglycine diacetic acid, ethylenediaminedisuccinic acid, glutamic acid-N,N-diacetic acid, aspartic acid-N,N-diacetic acid, nitrilotriacetic acid, or salts thereof. Among them, from the viewpoint of the long-term stability of hydrogen peroxide under high-temperature conditions, ethylenediaminetetraacetic acid, or a salt thereof is preferable.

[0015] Examples of the hydroxycarboxylic acid-based chelating agent include citric acid, tartaric acid, malic acid, gluconic acid, or salts thereof. Among them, from the viewpoint of the long-term stability of hydrogen peroxide under high-temperature conditions, citric acid, malic acid, or salts thereof are preferable.

[0016] The content of the component (A) used in the present invention is not particularly limited, but is preferably 0.01 to 5%, more preferably 0.02 to 2%, and still more preferably 0.05 to 1%. When the component (A) is less than 0.01%, the long-term stability of hydrogen peroxide under high-temperature conditions may deteriorate. When the component (A) exceeds 5%, the long-term stability of hydrogen peroxide and the emulsified state under high-temperature conditions may deteriorate.

[0017] The oxidant-containing emulsified composition according to the present invention contains (B) phenoxyethanol from the viewpoint of the long-term stability of hydrogen peroxide under high-temperature conditions.

[0018] The content of the component (B) used in the present invention is not particularly limited, but is preferably 0.001 to 1%, more preferably 0.005 to 0.5%, and still more preferably 0.01 to 0.2%. When the component (B) is less than 0.001%, the long-term stability of hydrogen peroxide under high-temperature conditions may deteriorate. When the component (B) exceeds 1%, the long-term stability of hydrogen peroxide and the emulsified state under high-temperature conditions may deteriorate.

[0019] The mass ratio (A) / (B) of the component (A) and the component (B) used in the present invention is preferably 0.25 to 200, more preferably 0.5 to 50, and still more preferably 1 to 25. When it is less than 0.25 or exceeds 200, the long-term stability of hydrogen peroxide under high-temperature conditions may deteriorate.

[0020] The oxidant-containing emulsified composition according to the present invention contains (C) a nonionic surfactant having an HLB of less than 15 from the viewpoint of long-term emulsification stability under high-temperature conditions.

[0021] The component (C) used in the present invention is not particularly limited. For example, polyoxyethylene (hereinafter referred to as POE) (5) decyl ether "HLB: 11.64", POE (6) decyl ether "HLB: 12.51", POE (2) lauryl ether "HLB: 6.42", POE (3) lauryl ether "HLB: 8.30", POE (4) lauryl ether "HLB: 9.72", POE (5) lauryl ether "HLB: 10.84", POE (7) lauryl ether "HLB: 12.47", POE (8) lauryl ether "HLB: 13.09", POE (9) lauryl ether "HLB: 13.61", POE (12) lauryl ether "HLB: 14.79", POE (3) tridecyl ether "HLB: 7.95", POE (5) tridecyl ether "HLB: 11.64", POE (7) tridecyl ether "HLB: 12.13", POE (8) tridecyl ether "HLB: 12.75", POE (9) tridecyl ether "HLB: 13.29", POE (10) tridecyl ether "HLB: 13.75", POE (12) tridecyl ether "HLB: 14.51", POE (2) cetyl ether "HLB: 5.33", POE (5) cetyl ether "HLB: 9.52", POE (6) cetyl ether "HLB: 10.43", POE (7) cetyl ether "HLB: 11.2", POE (8) cetyl ether "HLB: 11.85", POE (10) cetyl ether "HLB: 12.9", POE (13) cetyl ether "HLB: 14.05", POE (15) cetyl ether "HLB: 14.63", POE (2) stearyl ether "HLB: 4.92", POE (3) stearyl ether "HLB: 6.57", POE (4) stearyl ether "HLB: 7.89", POE (5) stearyl ether "HLB: 8.98", POE (7) stearyl ether "HLB: 10.66", POE (10) stearyl ether "HLB: 12.39", POE (11) stearyl ether "HLB: 12.84", POE (15) stearyl ether "HLB: 14.19", POE (8) isostearyl ether "HLB: 11.32", POE (12) isostearyl ether "HLB: 13.23", POE (16) isostearyl ether "HLB: 14.46, POE(2) oleyl ether "HLB: 4.92", POE(5) oleyl ether "HLB: 9.02", POE(7) oleyl ether "HLB: 10.69", POE(9) oleyl ether "HLB: 11.93", POE(10) oleyl ether "HLB: 12.43", POE(15) oleyl ether "HLB: 14.22", POE(5) behenyl ether "HLB: 8.06", POE(10) behenyl ether "HLB: 11.49", POE(20) behenyl ether "HLB: 14.59", etc. Among them, from the viewpoint of emulsion stability under high-temperature conditions, POE(10) cetyl ether, POE(15) cetyl ether, POE(2) stearyl ether, POE(4) stearyl ether, POE(10) stearyl ether, and POE(15) stearyl ether are preferred. The component (C) may contain one or more. The numbers in the parentheses of the component (C) indicate the number of moles of added POE.

[0022] Here, "HLB" is an abbreviation for Hydrophile - Lipophile Balance, which is a parameter representing the relative strength of hydrophilicity and lipophilicity of the surfactant molecule. The larger the HLB value, the stronger the hydrophilicity, and the smaller the HLB value, the stronger the lipophilicity. The HLB described in this specification is calculated from the known Griffin's formula.

[0023] The content of the component (C) used in the present invention is not particularly limited, but is preferably 0.3 to 3%, more preferably 0.5 to 2%. When the component (C) is less than 0.3% or exceeds 3%, the long-term emulsion stability under high-temperature conditions may deteriorate.

[0024] The oxidant-containing emulsion composition according to the present invention contains a nonionic surfactant (D) having an HLB of 15 or more from the viewpoint of long-term emulsion stability under high-temperature conditions.

[0025] The component (D) used in the present invention is not particularly limited. For example, POE(15) lauryl ether "HLB: 15.60", POE(19) lauryl ether "HLB: 16.36", POE(21) lauryl ether "HLB: 16.65", POE(25) lauryl ether "HLB: 17.11", POE(30) lauryl ether "HLB: 17.53", POE(40) lauryl ether "HLB: 18.09", POE(20) tridecyl ether "HLB: 16.30", POE(15) tridecyl ether "HLB: 15.35", POE(20) cetyl ether "HLB: 15.69", POE(23) cetyl ether "HLB: 16.14", POE(25) cetyl ether "HLB: 16.39", POE(30) cetyl ether "HLB: 16.9", POE(40) cetyl ether "HLB: 17.58", POE(150) cetyl ether "HLB: 19.29", POE(20) stearyl ether "HLB: 15.30", POE(30) stearyl ether "HLB: 16.60", POE(40) stearyl ether "HLB: 17.34", POE(50) stearyl ether "HLB: 17.81", POE(100) stearyl ether "HLB: 18.84", POE(20) oleyl ether "HLB: 15.33", POE(50) oleyl ether "HLB: 17.83", POE(30) behenyl ether "HLB: 16.04", etc. may be mentioned. Among them, from the viewpoint of emulsion stability under high-temperature conditions, POE(20) cetyl ether, POE(30) cetyl ether, POE(150) cetyl ether, POE(20) stearyl ether, POE(30) stearyl ether, POE(40) stearyl ether, POE(100) stearyl ether, POE(20) oleyl ether, and POE(50) oleyl ether are preferable. The component (D) may contain one or more kinds.

[0026] The content of the component (D) used in the present invention is not particularly limited, but preferably 0.48 to 4.8%, more preferably 0.8 to 3.2%. When the component (D) is less than 0.48% or exceeds 4.8%, the long-term emulsion stability under high-temperature conditions may deteriorate.

[0027] The oxidant-containing emulsion composition according to the present invention contains water having an electric conductivity of 1 mS / m or less at 25°C (E) from the viewpoint of the long-term stability of hydrogen peroxide under high-temperature conditions.

[0028] The component (E) used in the present invention can be obtained by treating at least one selected from purified water, tap water, groundwater, and seawater with at least one selected from ion exchange resins and reverse osmosis membranes.

[0029] The electric conductivity of the component (E) used in the present invention is not particularly limited as long as it is 1 mS / m or less, but is preferably 0.5 mS / m or less. When the electric conductivity of the component (E) exceeds 1 mS / m, the long-term stability of hydrogen peroxide under high-temperature conditions may deteriorate.

[0030] The electric conductivity of the oxidant-containing emulsion composition in the present invention can be measured using a general electric conductivity meter of the electric conductivity meter CM-42X (manufactured by Toa DKK Corporation).

[0031] The oxidant-containing emulsion composition according to the present invention contains a hydrocarbon oil (F) from the viewpoint of long-term emulsion stability under high-temperature conditions.

[0032] The component (F) used in the present invention is not particularly limited, and examples thereof include α-olefin oligomers, paraffins, liquid paraffins, light isoparaffins, light liquid isoparaffins, liquid isoparaffins, petrolatum, polyethylene powder, ozokerite, polybutene, ceresin, and the like. Among them, liquid paraffin and petrolatum are preferable from the viewpoint of long-term emulsion stability under high-temperature conditions. The component (F) may contain one or more kinds.

[0033] The content of the component (F) used in the present invention is not particularly limited, but is preferably 0.1 to 12%, more preferably 0.5 to 9%, and still more preferably 1 to 7%. When the component (F) is less than 0.1% or exceeds 12%, the long-term emulsion stability under high-temperature conditions may deteriorate.

[0034] The mass ratio (F) / ((C)+(D)) of the component (F) and the components (C) and (D) used in the present invention is preferably 0.04 to 7.69, more preferably 0.19 to 6.41, and still more preferably 0.38 to 3.85. When it is less than 0.04 or exceeds 7.69, the long-term emulsion stability under high-temperature conditions may deteriorate.

[0035] The oxidant-containing emulsion composition according to the present invention contains (G) a higher alcohol having 14 to 22 carbon atoms from the viewpoint of long-term emulsion stability under high-temperature conditions.

[0036] The component (G) used in the present invention is not particularly limited, and examples thereof include myristyl alcohol, cetyl alcohol, stearyl alcohol, arachyl alcohol, behenyl alcohol, 2-hexyldecanol, isostearyl alcohol, 2-octyldodecanol, decyltetradecanol, oleyl alcohol, linoleyl alcohol, linolenyl alcohol and the like. Among them, cetyl alcohol and stearyl alcohol are preferable from the viewpoint of long-term emulsion stability under high-temperature conditions. The component (G) may contain one or more kinds.

[0037] The content of the component (G) used in the present invention is not particularly limited, but is preferably 1.7 to 15.3%, more preferably 3.4 to 15.3%, and still more preferably 5.1 to 10.2%. When the component (G) is less than 1.7% or exceeds 15.3%, the long-term emulsion stability under high-temperature conditions may deteriorate.

[0038] The oxidant-containing emulsion composition according to the present invention can contain an (H) cationic surfactant from the viewpoint of finish, but preferably does not contain it from the viewpoint of the long-term stability of hydrogen peroxide under high-temperature conditions.

[0039] The (H) component used in the present invention is not particularly limited. For example, lauryltrimethylammonium chloride, cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, behenyltrimethylammonium chloride, distearyldimethylammonium chloride, lauryltrimethylammonium bromide, cetyltrimethylammonium bromide, stearyltrimethylammonium bromide, dicetyldimethylammonium chloride, dicocoyldimethylammonium chloride, dodecyldimethylethylammonium chloride, polyoxypropylene methyldiethylammonium chloride, benzalkonium chloride, lanolin fatty acid aminopropyl ethyldimethylammonium ethyl sulfate, cetyltrimethylammonium saccharin, stearyltrimethylammonium saccharin, etc. can be mentioned. Among them, stearyltrimethylammonium chloride, cetyltrimethylammonium chloride, and behenyltrimethylammonium chloride are preferable from the viewpoint of long-term emulsion stability under high-temperature conditions. The (H) component may contain one or more kinds.

[0040] The content of the (H) component used in the present invention is preferably 0.5% or less, more preferably 0.2% or less, and even more preferably 0.1% or less. When the (H) component exceeds 0.5%, the long-term stability of hydrogen peroxide under high-temperature conditions may deteriorate.

[0041] The viscosity of the oxidant-containing emulsion composition in the present invention at 20°C is not particularly limited, but is preferably 1,000 to 40,000 mPa·s, more preferably 2,500 to 35,000 mPa·s. When the viscosity of the oxidant-containing emulsion composition is less than 1,000 mPa·s, the long-term emulsion stability under high-temperature conditions may deteriorate. Also, when the viscosity of the oxidant-containing emulsion composition exceeds 40,000 mPa·s, the miscibility with the first agent composition of the hair dye and the coatability on the hair may decrease.

[0042] The viscosity of the oxidant-containing emulsified composition in the present invention is measured as follows: After adjusting the oxidant-containing emulsified composition by a conventional method, a 140 g-capacity sample bottle (Food 140: manufactured by Nippon Electric Glass Co., Ltd.) is filled with 120 g of the composition, left standing overnight, and then measured at 20°C using a B-type viscometer (model: Digital Viscometer TVB-10M, manufactured by Toki Sangyo Co., Ltd.) with a No. 4 rotor for 1 minute under the condition of a rotational speed of 12 rpm.

[0043] The pH of the oxidant-containing emulsified composition according to the present invention at 20°C is preferably 2 to 4.5, more preferably 2 to 3.5. If the pH exceeds 4.5, there is a risk that hydrogen peroxide cannot be stabilized.

[0044] The pH in the present invention is measured as follows: A hair cosmetic prepared by a conventional method is filled into a 120 g sample bottle (Food 140: manufactured by Nippon Electric Glass Co., Ltd.), left standing at 20°C for 24 hours, and then the pH of the stock solution is measured using a glass electrode type hydrogen ion concentration indicator (F-71, manufactured by Horiba, Ltd.).

[0045] For the oxidant-containing emulsified composition according to the present invention, acids such as phosphoric acid and phosphates can be used to improve the stability of hydrogen peroxide. In addition to the components described above, anionic surfactants, amphoteric surfactants, alcohols, saccharides, amino acids, plant extracts, pH adjusters, fragrances, preservatives, etc. can be mentioned. These components are not particularly limited as long as they do not inhibit the effects of the present invention and can contain one or more of them.

[0046] The dosage forms of the oxidant-containing emulsified composition according to the present invention include emulsion, cream, jelly cream, foam, aerosol foam. The oxidant-containing emulsified composition according to the present invention is filled into various containers such as plastic containers, tube containers, aerosol containers, etc. and stored until use.

Examples

[0047] The present invention will be described in detail with reference to the following examples, but the present invention is not limited to these examples only.

[0048] In the evaluation tests shown in this specification, various experimental results obtained while variously changing the components contained in the oxidant-containing emulsion composition and their contents are shown below. Here, all the units indicating the contents of the components of the oxidant-containing emulsion composition are mass%, and these were prepared by a conventional method. As the pH adjuster, phosphoric acid or potassium hydroxide was used.

[0049] In the evaluation tests shown in this specification, for the "long-term stability of hydrogen peroxide under high-temperature conditions", the obtained oxidant-containing emulsion composition was filled with 40 g into a polyethylene sealed container (with a capacity of 40 g). Immediately after filling and after storage at 50°C for 3 months, the concentration of hydrogen peroxide in the oxidant-containing emulsion composition was measured and evaluated as follows. For the quantitative method of hydrogen peroxide, the redox titration method was used. The residual rate (%) of hydrogen peroxide was calculated as follows. Residual rate (%) of hydrogen peroxide = (Concentration of hydrogen peroxide in the oxidant-containing emulsion composition after storage at 50°C for 3 months) / (Concentration of hydrogen peroxide in the oxidant-containing emulsion composition immediately after filling) × 100 <Evaluation criteria> ◎: The residual rate of hydrogen peroxide is 95% or more. ○: The residual rate of hydrogen peroxide is 90% or more and less than 95%. △: The residual rate of hydrogen peroxide is 80% or more and less than 90%. ×: The residual rate of hydrogen peroxide is less than 80%.

[0050] In the evaluation tests shown in this specification, for the "long-term emulsion stability under high-temperature conditions", the obtained oxidant-containing emulsion composition was filled with 40 g into a polyethylene sealed container (with a capacity of 40 g), opened after storage at 50°C for 3 months, and the emulsion state of the oxidant-containing emulsion composition was visually confirmed and evaluated as follows. <Evaluation criteria> ◎: No water separation occurs after storage at 50°C for 3 months. ○: Slight water separation occurs after storage at 50°C for 3 months. △: Slight water leakage was observed after 3 months of storage at 50°C. ×: It clearly separates after 3 months of storage at 50°C.

[0051] In Examples 1 to 12 described in Table 1, good results were also shown even when the type and content of the (A) chelating agent were changed.

[0052]

Table 1

[0053] In Examples 13 to 20 described in Table 2, good results were also shown even when the content of (B) phenoxyethanol was changed. Note that in Comparative Examples 3 to 5, since the oxidant-containing emulsion composition separated due to long-term storage under high-temperature conditions, viscosity measurement was not performed.

[0054]

Table 2

[0055] In Examples 21 to 27 described in Table 3, good results were also shown even when the types and contents of the (C) nonionic surfactant with an HLB of less than 15 and the (D) nonionic surfactant with an HLB of 15 or more were changed.

[0056]

Table 3

[0057] In Examples 28 to 30 described in Table 4, good results were also shown even when the electrical conductivity of (E) water at 25°C was changed.

[0058]

Table 4

[0059] In Examples 31 to 39 described in Table 5, good results were shown even when the content of (F) hydrocarbon oil was changed.

[0060]

Table 5

[0061] In Examples 40 to 46 described in Table 6, good results were shown even when the content of (G) higher alcohol was changed.

[0062]

Table 6

[0063] In Examples 47 to 49 described in Table 7, good results were shown even when the content of (H) cationic surfactant was changed.

[0064]

Table 7

Industrial Applicability

[0065] The present invention can obtain an oxidant-containing emulsion composition having good long-term stability of hydrogen peroxide under high-temperature conditions and good long-term emulsion stability under high-temperature conditions.

Claims

1. An oxidant-containing emulsified composition that is used by mixing with a composition containing at least an alkaline agent at the time of use, (A) One or more selected from hydroxyethanediphosphonic acid or its salts (B) Phenoxyethanol (C) One or more selected from polyoxyethylene (10) cetyl ether or polyoxyethylene (2) stearyl ether (D) Polyoxyethylene (20) cetyl ether (E) Water (F) One or more selected from liquid paraffin or petrolatum (G) One or more selected from cetyl alcohol or stearyl alcohol containing, the content of the component (A) is 0.05 to 1% by mass, the content of the component (B) is 0.01 to 0.2% by mass, the content of the component (C) is 0.5 to 2% by mass, the content of the component (D) is 0.8 to 3.2% by mass, the content of the component (F) is 1 to 10% by mass, the content of the component (G) is 5.1 to 10.2% by mass, the mass ratio (A) / (B) of the component (A) to the component (B) is 1 to 25, the mass ratio (F) / ((C)+(D)) of the component (F) to the components (C) and (D) is 0.38 to 3.85, (H) The content of the cationic surfactant is 0.1% by mass or less An oxidant-containing emulsified composition characterized by this.

2. The oxidant-containing emulsified composition according to claim 1, characterized in that the viscosity of the oxidant-containing emulsified composition is 1,000 to 40,000 mPa·s.

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