Foaming detergent composition

Abstract

To provide a foamable detergent composition superior in moisture resistance and high-temperature stability.SOLUTION: A foamable detergent composition contains the following (A)-(C), with the mass ratio of the total of (A) and (B) to (C), ((A)+(B): (C)), of 40: 60-90: 10. (A) is carbonate, (B) is an organic acid and (C) is acyl isethionate.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a foaming detergent composition.

Background Art

[0002] One - component foaming detergents for human use that generate carbon dioxide gas during use are known (Patent Documents 1 and 2). These foaming detergents are in powder or granular form containing a carbonate and an organic acid, and when water is added, the carbonate and the organic acid react to generate carbon dioxide gas. In a foaming detergent, in order to generate sufficient carbon dioxide gas, it is necessary to highly formulate the carbonate and the organic acid. However, carbonates such as sodium carbonate and sodium bicarbonate, and organic acids such as citric acid and malic acid, which are generally used in foaming detergents, have high hygroscopicity and may form lumps. Also, unexpected foaming may start during storage or due to moisture absorption or high temperature, and there is a desire to provide a foaming detergent composition that has sufficient foaming properties and excellent moisture resistance and high - temperature stability.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to provide a foaming detergent composition having excellent moisture resistance and high - temperature stability.

Means for Solving the Problems

[0005] Means for solving the problems of the present invention are as follows. 1. A foaming detergent composition characterized by containing the following (A) to (C), wherein the mass ratio of the sum of (A) and (B) to (C) ((A) + (B):(C)) is 40:60 to 90:10. (A) Carbonate (B)Organic acid (C) Acyl isethionate 2. The foaming detergent composition according to 1, characterized in that it contains sodium carbonate as (A). 3. (D) The foaming detergent composition according to 1. or 2., characterized by containing an acyl sarcosine salt. [Effects of the Invention]

[0006] The foaming detergent composition of the present invention has excellent moisture resistance and can prevent clumping due to moisture absorption. It also has excellent high-temperature stability and can prevent unexpected foaming during storage. The foaming detergent composition of the present invention containing (D) acyl sarcosine salt has excellent usability in terms of water solubility, foaming ability, foam quality and volume. Because the foaming detergent composition of the present invention has excellent moisture resistance and high-temperature stability, it does not need to be individually packaged and can be made into a foaming detergent product filled in a container for multiple uses. Since the foaming detergent product of the present invention is not individually packaged, the amount of packaging material can be reduced and the burden on the environment can be reduced. The foaming detergent product of the present invention can be used by taking out the desired amount of foaming detergent composition according to the user's preference, etc. [Modes for carrying out the invention]

[0007] The foaming detergent composition of the present invention contains the following (A) to (C), and the mass ratio of the sum of (A) and (B) to (C) ((A) + (B):(C)) is 40:60 to 90:10. (A) Carbonate (B)Organic acid (C) Acyl isethionate In this specification, the numerical range "A to B" refers to a range that includes both ends, i.e., "A or greater and B or less".

[0008] (A) Carbonate The carbonate can be any type used in skin cleansing agents without any particular restrictions. For example, one or more types selected from sodium carbonate, sodium bicarbonate, magnesium carbonate, calcium carbonate, potassium carbonate, etc., can be used. Among these, sodium carbonate is preferred in terms of moisture resistance and high temperature stability, and the proportion of sodium carbonate to the total amount of carbonate is more preferably 25% by mass or more, even more preferably 50% by mass or more, and even more preferably 70% by mass or more. The amount of carbonate added is preferably 10 parts by mass or more and 30 parts by mass or less, and more preferably 12 parts by mass or more and 25 parts by mass or less, relative to the total foaming detergent composition.

[0009] (B)Organic acid Organic acids can be used without any particular restrictions, including those used in skin cleansing agents. For example, one or more selected from citric acid, succinic acid, fumaric acid, malic acid, adipic acid, tartaric acid, benzoic acid, pyrrolidone carboxylic acid, salicylic acid, maleic acid, phthalic acid, glutaric acid, oxalic acid, etc., can be used. Among these, it is preferable to include citric acid or malic acid in terms of foaming properties and ease of use. The amount of organic acid added is preferably 15 parts by mass or more and 40 parts by mass or less, and more preferably 20 parts by mass or more and 35 parts by mass or less, relative to the total foaming detergent composition. The mass ratio ((A):(B)) of (A) carbonate to (B) organic acid is preferably such that carbon dioxide gas is generated from the total amount of carbonate when dissolved in water. For example, it is preferably 20:80 to 50:50, and more preferably 30:70 to 45:55.

[0010] (C) Acyl isethionate Acyl isethionates are ethyl ester sulfonates of fatty acids that act as surfactants, contributing to cleansing properties. Acyl isethionates can be used in skin cleansers without any particular restrictions on their use. The acyl group of the acyl isethionate salt can be a linear or branched group derived from saturated or unsaturated fatty acids with 8 to 22 carbon atoms. Examples of fatty acids include caprylic acid, capric acid, lauric acid, myristic acid, stearic acid, palmitic acid, oleic acid, linoleic acid, coconut oil fatty acid, palm fatty acid, palm kernel fatty acid, and hydrogenated beef tallow fatty acid. One or more of these can be used in combination. Among these, coconut oil fatty acid (cocoyl) is preferred in terms of moisture resistance and ease of use.

[0011] Examples of acyl isethionate salts include alkali metal salts such as sodium salts and potassium salts, alkaline earth metal salts such as calcium salts and magnesium salts, inorganic salts such as aluminum salts and zinc salts, or organic amine salts such as ammonia, monoethanolamine, diethanolamine, and triethanolamine, or organic salts such as basic amino acids such as arginine and lysine. One or more of these can be used in combination. Among these, alkali metal salts are preferred, and sodium salts or potassium salts are more preferred.

[0012] The foaming detergent composition of the present invention exhibits excellent moisture resistance due to the mass ratio ((A)+(B):(C)) of the total of (A) carbonate and (B) organic acid to (C) acyl isethionate salt being 40:60 to 90:10. Preferably, this mass ratio ((A)+(B):(C)) is 50:50 to 90:10. The amount of acyl isethionate added is preferably 3 parts by mass or more and 35 parts by mass or less, more preferably 5 parts by mass or more and 30 parts by mass or less, and even more preferably 8 parts by mass or more and 25 parts by mass or less, relative to the total foaming detergent composition.

[0013] (D) Acyl sarcosine salts The foaming detergent composition of the present invention preferably contains an acyl sarcosine salt. An acyl sarcosinate is an N-methylglycine salt of a fatty acid and is a surfactant. Although its mechanism is unknown, by using (C) acyl isethionate and (D) acyl sarcosinate in combination, water solubility, quick foaming properties, etc. can be improved. As the acyl group of the acyl sarcosinate, a linear or branched-chain one derived from a saturated or unsaturated fatty acid having 8 to 22 carbon atoms can be used. For example, as the fatty acid, caprylic acid, capric acid, lauric acid, myristic acid, stearic acid, palmitic acid, oleic acid, linoleic acid, coconut oil fatty acid, palm fatty acid, palm kernel fatty acid, hydrogenated beef tallow fatty acid, etc. can be mentioned. One or more of these can be mixed and used. Among these, from the viewpoint of usability, lauric acid (lauroyl) is preferable.

[0014] As the salt of the acyl sarcosinate, there are alkali metal salts such as sodium salt and potassium salt, alkaline earth metal salts such as calcium salt and magnesium salt, inorganic salts such as aluminum salt and salts with zinc, or organic amine salts such as ammonia, monoethanolamine, diethanolamine, triethanolamine, and organic salts such as basic amino acids such as arginine and lysine. One or more of these can be mixed and used. Among these, alkali metal salts are preferable, and sodium salt or potassium salt is more preferable. The acyl sarcosinate is an optional component, and its blending amount is preferably 0.1 part by mass or more and 30 parts by mass or less, more preferably 25 parts by mass or less, and even more preferably 20 parts by mass or less with respect to the whole foaming detergent composition.

[0015] Other Blending Components The foaming detergent composition of the present invention can use any components used in skin detergents other than (A) to (C) and (D) within a range that does not adversely affect the effects of the present invention. For example, surfactants other than (C) and (D), saccharides, sugar alcohols, waxes, organic powders, inorganic powders, polymers, preservatives, sequestering agents, ultraviolet absorbers, ultraviolet scattering agents, moisturizers, fragrances, pH adjusters, desiccants, medicinal ingredients, physiologically active ingredients, etc. can be contained.

[0016] As other surfactants, anionic surfactants, amphoteric surfactants, cationic surfactants, and nonionic surfactants can be blended. Examples of anionic surfactants include higher fatty acid salts, N-acyl amino acid salts, N-acyl methyl taurine salts, monoalkyl phosphates, ether carboxylates, alkenyl sulfonates, sulfosuccinates, fatty acid amide alkyldimethylamine oxides, etc. Examples of amphoteric surfactants include carbobetaine type surfactants, sulfobetaine type surfactants, amide betaine type surfactants, imidazoline type surfactants, etc.

[0017] Examples of saccharides and sugar alcohols include glucose, sorbitol, mannose, mannitol, galactose, galactitol, maltose, maltitol, trehalose, erythrose, erythritol, xylose, xylitol, sucrose, lactose, lactitol, difructose anhydride, etc.

[0018] Examples of waxes include rice bran wax, carnauba wax, candelilla wax, etc. Examples of organic powders include polyethylene powder, polystyrene powder, polymethyl (meth)acrylate powder, nylon powder, polyurethane powder, agar powder, cork powder, starch, etc. Examples of inorganic powders include talc, kaolin, silica, mica, zeolite, bentonite, titanium dioxide, etc.

[0019] Examples of polymers include dextrin, pullulan, acacia gum, tragacanth gum, galactan, guar gum, carrageenan, pectin, xanthan gum, quince seed, dextran, cationized dextran, carboxymethyl starch, hydroxypropyl starch, collagen, casein, gelatin, methylcellulose, methylhydroxypropylcellulose, hydroxyethylcellulose, sodium carboxymethylcellulose, hydroxypropylmethylcellulose, sodium alginate, and carboxyvinyl polymer.

[0020] Examples of metal ion chelating agents include disodium ethylenediaminetetraacetate, edetate, and edetate salts such as sodium edetate salt. Examples of medicinal and physiologically active ingredients include vitamin C derivatives such as L-ascorbic acid, L-ascorbic acid phosphate, L-ascorbic acid monopalmitate, L-ascorbic acid dipalmitate, and L-ascorbic acid-2-glucoside; whitening agents such as glutathione and Saxifraga stolonifera extract; skin activators such as royal jelly; blood circulation promoters such as capsaicin, gingerol, cantharis tincture, ichthammol, caffeine, tannic acid, and γ-oryzanol; anti-inflammatory agents such as glycyrrhizic acid derivatives, glycyrrhetinic acid derivatives, and azulene; enzymes such as protease and lipase; and resident bacteria control agents such as maltose sucrose condensate and lysozyme chloride.

[0021] The foaming detergent composition of the present invention is in powder or granular form and can be used for washing the face, head, and body. The foaming detergent composition of the present invention can be manufactured simply by powdering each agent used and mixing them uniformly. In the foaming detergent composition of the present invention, it is preferable that each agent has a sieve diameter of 710 μm or less (sieved through a sieve with a mesh opening of 710 μm). If particles with a sieve diameter exceeding 710 μm are included, irritation may occur during washing. The sieve diameter of each agent is more preferably 500 μm or less, even more preferably 425 μm or less, and even more preferably 300 μm or less.

[0022] The foaming detergent product of the present invention can be supplied in various containers. However, as described above, because it does not easily absorb moisture and solidify, it does not need to be individually packaged for each single use. Even if multiple uses of 5g or more are placed together in a container having a body and a lid, it can maintain its powder or granular state. [Examples]

[0023] The present invention will be further explained below with reference to examples and comparative examples. The foaming detergent compositions of Examples 1-17 and Comparative Examples 1-5 were prepared by mixing each component according to the formulations listed in Table 1, and evaluated using the evaluation method described below. All evaluations were performed by two professional sensory evaluators, and in the event of differing evaluation results, the final evaluation was determined through consultation. The results are shown in Table 1.

[0024] (1) Evaluation of foaming properties The effervescence of the test sample was evaluated when 0.5 g was placed in the palm of the hand and 2 mL of water was added. The evaluation criteria were as follows: <Evaluation Criteria> ○: Foaming can be observed. ×: No foaming observed

[0025] (2) Evaluation of usability 0.5g of the test sample was placed in the palm of the hand, lathered with 2mL of water, and its suitability as a facial cleanser was evaluated on a four-point scale. The evaluation criteria and evaluation items are as follows: <Evaluation Criteria> ◎: Excellent ○: Good △: Slightly bad ×: Bad

[0026] <Evaluation Criteria> 1) Water dissolvable 2) Fast-foaming 3) Foam amount 4) Foam quality (fineness of foam, elasticity of foam) 5) Foam retention 6) Rinsing properties

[0027] (3) Moisture resistance evaluation 8 g of the test sample was placed in a transparent PET container with a 5 mm diameter opening and left undisturbed for 24 hours at 40°C and 75% RH with the lid open. Afterward, the temperature was returned to 25°C, and the properties of the test sample were evaluated by closing the lid and shaking the container up and down. The evaluation criteria were as follows: <Evaluation Criteria> ○: Liquid △: Fluid, but partially solidified ×: Solidification

[0028] (4) High-temperature stability evaluation Four grams of the test sample were placed in an aluminum pouch and left to stand at 50°C for 72 hours. Afterward, the appearance of the aluminum pouch was evaluated at 25°C. The evaluation criteria were as follows: <Evaluation Criteria> ○: No change △: Slightly bulging (pouch thickness is less than twice its original size) ×: It is bulging (the pouch is more than twice as thick).

[0029] [Table 1]

[0030] The foaming detergent compositions of Examples 1 to 17, which are part of the present invention, exhibited excellent moisture resistance and high-temperature stability. The composition of Comparative Example 5 also exhibited excellent moisture resistance and high-temperature stability, but this is because it does not contain (A) carbonate and (B) organic acid. In contrast, the foaming detergent compositions of Comparative Examples 1 to 3, which did not satisfy the composition of the present invention, had poor moisture resistance, and the foaming detergent composition of Comparative Example 4 had poor moisture resistance and high-temperature stability. The results from Examples 1-17 and Comparative Examples 1-4 confirmed that by including a specific amount of (C) acyl isethionate as an activator relative to the total of (A) carbonate and (B) organic acid, a foaming detergent composition with excellent moisture resistance and high-temperature stability can be obtained. The results from Example 8 and Comparative Example 5 confirmed that (A) carbonate and (B) organic acid make (C) acyl isethionate more easily soluble and more prone to foaming.

[0031] (Product evaluation) A comparative evaluation was conducted between the above-described Example 5, which is the present invention, and commercially available detergents 1 to 4 containing (A) carbonate and (B) organic acid. Commercial product 3 is advertised as being non-foaming, and only commercial product 4 contains (C) cocoyl isethionate. However, although the detailed amount of commercial product 4 is unknown, it mainly uses lauroyl glutamate as an active agent. In addition to the evaluation items listed above, carbon dioxide concentration was measured. The results are shown in Table 2. (5) Measurement of carbon dioxide concentration 0.5 g of the test sample was added to 49.5 g of water and dissolved. Then, while stirring with a magnetic stirrer, the carbon dioxide concentration was measured using a portable carbon dioxide concentration meter CGP-31 (manufactured by Toa DKK Co., Ltd.). After stirring for 5 minutes, the value was recorded as the measurement when it stabilized.

[0032] [Table 2]

[0033] The foaming detergent composition of Example 5, which is the present invention, exhibited superior moisture resistance compared to commercially available foaming detergents. Commercial product 4 contains (C) cocoyl isethionate, but exhibited inferior moisture resistance. This is presumed to be because commercial product 4 uses lauroyl glutamate as its main active ingredient, and therefore the mass ratio of the sum of (A) and (B) to (C) ((A)+(B):(C)) is outside the scope of the present invention. This is indirectly supported by the fact that the results of the usability evaluation of commercial product 4 are similar to the results of Comparative Examples 1 and 2.

[0034] The following are examples of prescriptions. Formula Example 1: Facial Cleansing Powder - Amount of Ingredients (by mass) Citric acid 27 Sodium carbonate 18 Sodium Lauroyl Sarcosinate 5 Sodium Cocoyl Isethionate 8 Sodium myristoyl glutamate 2 Sodium lauroyl aspartate 4.8 Sodium Lauroyl Glutamate 10 Pullulan 2 Hydroxypropyl starch 1 Protease 0.02 Lipase 0.02 Talc 10.16 Silica 12

[0035] Formula Example 2: Facial Cleansing Powder - Amount of Ingredients (by mass) Malic acid 22.2 Sodium carbonate 17.8 Sodium Lauroyl Sarcosinate 3 Sodium Cocoyl Isethionate 6 Sodium olefin (C14-16) sulfonate 8 Sodium myristoyl glutamate 0.3 Sodium lauroyl aspartate 4.8 Sodium Lauroyl Glutamate 14 Pullulan 1 Talc 10.9 Silica 12

[0036] Formula Example 3: Facial Cleansing Powder - Amount of Ingredients (by mass) Malic acid 12.2 Citric acid 10 Sodium carbonate 17.8 Sodium lauroyl sarcosinate 3.5 Sodium Cocoyl Isethionate 7 Sodium olefin (C14-16) sulfonate 8 Sodium myristoyl glutamate 2 Sodium Lauroyl Aspartate 5 Sodium Lauroyl Glutamate 12 Pullulan 1 Dextrin 3 Protease 0.02 Lipase 0.02 Talc 6.46 Silica 12

Claims

1. A foaming detergent composition characterized by containing the following (A) to (C), wherein the mass ratio of the sum of (A) and (B) to (C) ((A) + (B):(C)) is 40:60 to 90:

10. (A) Carbonate containing 70% or more by mass of sodium carbonate (B) Organic acid (C) Acyl isethionate

2. (D) The foaming detergent composition according to claim 1, characterized in that it contains an acyl sarcosine salt.

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