Cleaning agent

Abstract

The invention provides a cleaning agent which has sufficient cleaning power and can realize high stability and use feeling. A cleaning agent comprising (A) a bentonite mineral, (B) mica having a hydrophilic surface, and (C) water. Untreated mica is preferably used as the mica having a hydrophilic surface.

Description

Technical Field

[0001] The present invention relates to a cleaning agent that can effectively clean the skin and the like, and has a high cleaning effect and high high-temperature stability. Background Art

[0002] Recently, there has been a desire to develop an environmentally friendly cleaning agent. This is because the wastewater after using synthetic detergents and the like can cause environmental pollution, so it is desired to prevent this problem. Regarding such detergents, research has been conducted not only on laundry detergents or dish / food detergents, but also on body washes, shampoos, facial cleansers, and the like.

[0003] Most environmentally friendly cleaning agents use natural materials. This is because, compared with cleaning agents using synthetic materials, the environmental burden of cleaning agents using natural materials is generally lower.

[0004] As an example of such a cleaning agent using natural materials, a cleaning agent containing a powder such as a clay mineral as an inorganic substance as an abrasive can be cited. Such an abrasive can physically adsorb and remove sebum or sweat on the skin, and at the same time, it also exerts an effect of massaging the skin. Therefore, such a cleaning agent can impart both a cleaning effect and a skin massaging effect, and thus can impart an excellent feeling of use.

[0005] However, among such cleaning agents containing powders, liquid cleaning agents tend to have the problem of powder sedimentation. To solve this problem, a method of increasing the viscosity of the cleaning agent to make a so-called gel-like cleaning agent or a solid cleaning agent has also been studied. When increasing the viscosity of the cleaning agent, a thickener is usually used, but depending on the combination of the thickener and other components contained in the cleaning agent, there are sometimes phenomena such as insufficient viscosity cannot be obtained, or the viscosity decreases due to storage.

[0006] Therefore, for cleaning agents containing clay minerals, techniques for achieving sufficient viscosity by combining other components such as powders or improving the stability of the cleaning agent have also been studied, but according to the research of the present inventors, further improvement is still desired.

[0007] Prior Art Documents

[0008] Patent Documents

[0009] Patent Document 1: Japanese Patent Application Laid-Open No. 2022-052473 Summary of the Invention

[0010] In view of the above problems, the present invention provides a cleaning agent containing a clay mineral, having sufficient detergency, and capable of achieving high stability and a feeling of use.

[0011] According to the present invention, the following inventions are provided. [1]

[0013] A cleaning agent, comprising:

[0014] (A) A swelling stone mineral,

[0015] (B) Mica with a hydrophilic surface, and

[0016] (C) Water. [2]

[0018] The cleaning agent according to [1], wherein the component (B) is untreated mica. [3]

[0020] The cleaning agent according to [1] or [2], wherein the average particle size of the component (B) is 10 μm or more. [4]

[0022] The cleaning agent according to any one of [1] to [3], wherein the component (A) is selected from the group consisting of montmorillonite, beidellite, saponite, stevensite, and hectorite. [5]

[0024] The cleaning agent according to any one of [1] to [4], further comprising (D) inorganic powder other than the component (A) or (B). [6]

[0026] The cleaning agent according to any one of [1] to [5], further comprising (E) organic powder. [7]

[0028] The cleaning agent according to any one of [1] to [6], further comprising (F) a humectant. [8]

[0030] The cleaning agent according to any one of [1] to [7], having a viscosity of 10,000 mPa·s or more as measured at 30 °C using a B-type rotational viscometer. [9]

[0032] The cleaning agent according to any one of [1] to [8], having a pH of 7 to 12 at 25 °C.

[10]

[0034] The cleaning agent according to any one of [1] to [9], wherein the content rate of the component (B) is 1 to 20% by mass based on the total mass of the cleaning agent.

[11]

[0036] The cleaning agent according to any one of [1] to

[10] , wherein the ratio B / A of the content rate of component (B) to the content rate of component (A) is 0.1 to 20.

[0037] According to the present invention, there is provided a cleaning agent which can fully exhibit the detergency brought by clay minerals and exhibit excellent stability and usability. Moreover, the cleaning agent of the present invention also has the effect of improving the appearance of the skin after cleaning, and can bring a bright feeling to the skin after cleaning. Detailed implementation mode

[0038] The cleaning agent of the present invention contains:

[0039] (A) Swelling stone mineral,

[0040] (B) Mica having a hydrophilic surface, and

[0041] (C) Water.

[0042] Hereinafter, each of these components and components that can be further incorporated will be described.

[0043] (A) Swelling stone mineral

[0044] The cleaning agent of the present invention contains a swelling stone mineral (hereinafter sometimes referred to as component (A)). The swelling stone mineral is a kind of clay mineral.

[0045] Clay minerals generally refer to those mainly composed of layered silicate minerals and can also be used in applications such as cosmetics. For clay minerals classified as layered silicate minerals, they can be further classified into 1:1 type minerals such as kaolinite minerals, 2:1 type minerals such as swelling stone minerals, 2:1:1 minerals such as chlorite, and the present invention uses swelling stone minerals among them. Among the swelling stone minerals, substances selected from the group consisting of montmorillonite, beidellite, talc, sepiolite, and hectorite are further preferably used. Among such swelling stone minerals, high-purity clays obtained by removing impurities from natural products and synthetic clay minerals can also be used. In addition, synthetic talc in which a part of magnesium in talc is replaced by aluminum can also be used.

[0046] Specifically, montmorillonite, talc, hectorite and other natural or synthetic montmorillonite groups (KUNIPIA (trade name, manufactured by KUNIMINE INDUSTRIES CO., LTD.), Veegum (trade name, manufactured by VANDERBILT), Laponite (trade name, manufactured by BYK Japan KK.), etc.) can be used. Among these, synthetic swelling stone minerals are preferably used because they can better exhibit the effects of the present invention and stabilize the performance.

[0047] The content ratio of component (A) can be arbitrarily selected according to the purpose. In order to achieve sufficient detergency, based on the total mass of the cleaning agent, it is preferably 0.1 to 10% by mass, more preferably 0.5 to 5% by mass.

[0048] (B) mica with a hydrophilic surface

[0049] The cleaning agent of the present invention contains mica with a hydrophilic surface (hereinafter sometimes referred to as component (B)). Mica can be selected and used from substances commonly used in cosmetics and cleaning agents, but the surface needs to be hydrophilic.

[0050] As mica, mica, sericite, muscovite, phlogopite, synthetic mica, red mica, biotite, lepidolite, calcined mica, etc. are known, and these can be selected and used. In the present invention, mica needs to be hydrophilic. Generally, the surface of natural mica is hydrophilic, so mica without surface treatment can be directly used. In addition, although the surface state of synthetic mica can be changed by the synthesis method and treatment method, mica with a hydrophobic surface can also be used in the cleaning agent of the present invention by subjecting the surface to a hydrophilic treatment. It should be noted that mica with a hydrophilic surface is preferably used in an untreated state, but for the purpose of attaching special substituents to the surface of mica particles, etc., further hydrophilic treatment can also be carried out, or the surface treatment can be carried out to such an extent that the hydrophilicity of the surface is sufficiently maintained.

[0051] In the present invention, by combining component (A) and component (B), high stability of the cleaning agent can be achieved, and further, the effect of improving the appearance of the skin after cleaning can be exerted.

[0052] The size of the mica particles can be arbitrarily selected according to the purpose. For high detergency and better appearance after cleaning, the average particle size is preferably 10 μm or more, more preferably 15 μm or more. It should be noted that in the present invention, the average particle size can be measured using a laser diffraction / scattering particle size distribution analyzer, for example, and it refers to D50 (median particle size).

[0053] (B) The content ratio of the component can be arbitrarily selected according to the purpose. In order to achieve sufficient detergency, based on the total mass of the cleaning agent, it is preferably 1 to 20% by mass, more preferably 5 to 15% by mass.

[0054] In addition, in the present invention, excellent effects can be achieved through the interaction between component (A) and component (B), but the effects will vary with the mixing ratio of component (A) and component (B). Here, in order to significantly exert the effects of the present invention, the ratio B / A of the content ratio of component (B) to the content ratio of component (A) is preferably 0.1 to 20, more preferably 0.5 to 10.

[0055] (C) Water

[0056] In addition to the above components, the cleaning agent of the present invention also contains water. As the water, the water conventionally used in cleaning agents can be used, for example, purified water, ion-exchanged water, tap water, etc. can be used.

[0057] (D) Inorganic powder

[0058] The cleaning agent of the present invention contains the above components as essential components, and may also contain inorganic powder (hereinafter sometimes referred to as component (D)). Component (D) is selected from substances other than the above component (A) or component (B). Specifically, examples include: zinc oxide, iron oxide red, talc, vermiculite, magnesium carbonate, calcium carbonate, aluminum silicate, barium silicate, calcium silicate, magnesium silicate, strontium silicate, metal tungstate, silica, zeolite, glass, barium sulfate, calcined calcium sulfate, calcium phosphate, fluorapatite, hydroxyapatite, ceramic powder, and boron nitride, etc. Inorganic pigments such as iron oxide yellow and iron oxide black can also be used as the inorganic powder. These inorganic pigments can further improve the cleaning effect through a frosting effect.

[0059] The content rate of component (D) can be arbitrarily selected according to the purpose. In order to better exhibit the improved effect of detergency, based on the total mass of the cleaning agent, it is preferably 3 to 20% by mass, more preferably 5 to 15% by mass.

[0060] (E) Organic powder

[0061] The cleaning agent of the present invention may also contain organic powder (hereinafter sometimes referred to as component (E)). As the organic powder, for example, examples include: cellulose powder such as microcrystalline cellulose, polyamide resin powder such as nylon powder, polyethylene powder, polymethyl methacrylate powder, polystyrene powder, copolymer resin powder of styrene and acrylic acid, benzoguanamine resin powder, polytetrafluoroethylene powder, silicone resin powder, silk powder, wool powder, and polyurethane powder, etc. In order to further improve the frosting effect, the average particle size of this organic powder is preferably 10 to 200 μm in average particle size.

[0062] The content rate of component (E) can be arbitrarily selected according to the purpose. In order to better exhibit the improved effect of detergency, based on the total mass of the cleaning agent, it is preferably 1 to 15% by mass, more preferably 3 to 10% by mass.

[0063] (F) Humectant

[0064] The cleaning agent of the present invention may also contain a humectant (hereinafter sometimes referred to as component (F)). As the humectant, those commonly used in cleaning or cosmetics can be used, but polyhydric alcohols or low-molecular-weight betaine compounds can also be used. As the polyhydric alcohol, the following can be used: dihydric alcohols such as ethylene glycol, 1,2-propanediol, and 1,3-butanediol; trihydric alcohols such as glycerol; and alcohols having four or more hydroxyl groups. As the low-molecular-weight betaine compound, specifically, substances having an amphoteric ion formed by an inner salt such as a quaternary ammonium salt group, a sulfonium salt group, or a phosphonium salt group with a molecular weight of 200 or less can be used. If the molecular weight is too high, it may sometimes cause rough skin, so attention needs to be paid.

[0065] When using a polyhydric alcohol as the humectant, glycerol is preferably used. In addition, it is preferable to combine at least one selected from the group consisting of polyethylene glycol, 1,3-butanediol, and dipropylene glycol in addition to glycerol.

[0066] (G) Other components

[0067] In addition to the above components, the cleaning agent of the present invention may contain other optional components within the range that does not impair the effects of the present invention. Examples of such optional components include components commonly formulated in cleaning agents such as lower alcohols, polysaccharides, pharmaceuticals, surfactants, antioxidants, ultraviolet absorbers, pigments, food flavorings, and protein derivatives. In particular, lower alcohols such as ethanol can give a refreshing feeling during use, so they are preferably used.

[0068] The usage method of the cleaning agent of the present invention is not particularly limited. When applied to human skin, it has an excellent touch and a high cleaning effect on the skin, so it is particularly suitable as a cleaning agent for human skin. In addition, the dosage form is not limited, and a dosage form such as a gel-like or paste-like form with a relatively high viscosity is preferred. Specifically, the viscosity is preferably 10,000 mPa·s or more, more preferably 15,000 mPa·s or more, and particularly preferably 20,000 mPa·s or more. Here, the viscosity can be measured using a B-type rotational viscometer under the conditions of rotor number 6, rotation speed 10 rpm, and 30 °C.

[0069] However, the cleaning agent of the present invention is not limited to such a dosage form or usage method, and can adopt any dosage form such as other solution-like or emulsion-like forms. In addition, the usage method can also be used for, for example, hair shampoo, 2-in-1 shampoo and conditioner, body wash, etc.

[0070] In addition, in order to suppress irritation to the skin, the cleaning agent of the present invention is preferably neutral to weakly alkaline. Specifically, the pH at 25 °C is preferably 7 to 12.

[0071] Examples

[0072] The present invention will be described using various examples. It should be noted that the present invention is not limited to these embodiments at all. In addition, unless otherwise specified, the content ratio is the mass% relative to the total amount.

[0073] [Examples 1 to 3 and Comparative Examples 1 to 3]

[0074] The respective components were formulated as shown in Table 1 to prepare a gel-like cleaning agent. For the obtained cleaning agent, the physical properties were evaluated as follows.

[0075] [Stability]

[0076] A cleaning agent was prepared, and then the state of the cleaning agent after being kept at 50 °C for 30 days was visually evaluated.

[0077] a: Maintaining the gel

[0078] b: A part of the gel was liquefied

[0079] c: The gel was completely liquefied

[0080] [Appearance of skin after cleaning]

[0081] Based on Comparative Example 1 (STD), the appearance (brightness) of the skin after being applied to the skin and cleaned was visually evaluated by 2 judges.

[0082] A: Significantly brighter than STD

[0083] B: Slightly brighter than STD

[0084] C: The same level as STD

[0085] D: Slightly darker than STD

[0086] E: Significantly darker than STD

[0087] [Table 1]

[0088] Table 1

[0089]

[0090] In the table:

[0091] Bentonite: KUNIPIA G (manufactured by KUNIMINE INDUSTRIES CO., LTD., equivalent to "montmorillonite")

[0092] Mica A: Mica without surface treatment, hydrophilic, and with an average particle size of 10 μm or more

[0093] Mica B: Mica without surface treatment, hydrophilic, and with an average particle size of less than 10 μm

[0094] Mica C: Mica with a hydrophobic surface treated with dimethylpolysiloxane and an average particle size of less than 10 μm

[0095] From the above results, it can be seen that when the vermiculite mineral is combined with mica having a hydrophilic surface, the stability of the cleaning agent is improved. Moreover, in the case of combining mica with a hydrophobic surface, no improvement in stability was confirmed. Furthermore, it can be seen that when the average particle size of mica is 10 μm or more, the improvement effect is large. In addition, it can be seen that in the case of combining mica, although the mica has been removed after cleaning, it also gives a bright feeling to the skin.

Claims

1. A cleaning agent comprising: (A) Bentonite minerals, (B) Mica having a hydrophilic surface, and (C) Water.

2. The cleaning agent according to claim 1, wherein Component (B) is mica whose surface has not been treated.

3. The cleaning agent according to claim 1 or 2, wherein The average particle size of the component (B) is 10 μm or more.

4. The cleaning agent according to claim 1 or 2, wherein The component (A) is selected from the group consisting of montmorillonite, beidellite, saponite, stachybotrys and hectorite. 5 . The cleaning agent according to claim 1 , further comprising (D) an inorganic powder other than the component (A) or the component (B). 6 . The cleaning agent according to claim 1 , further comprising (E) an organic powder.

7. The cleaning agent according to claim 1 or 2, further comprising (F) a moisturizing agent. 8 . The cleaning agent according to claim 1 , which has a viscosity of 10,000 mPa·s or more as measured at 30° C. using a B-type rotational viscometer. 9 . The cleaning agent according to claim 1 , wherein the pH thereof at 25° C. is 7 to 12.

10. The cleaning agent according to claim 1 or 2, wherein The content of the component (B) is 1 to 20% by mass based on the total mass of the cleaning agent.

11. The cleaning agent according to claim 1 or 2, wherein The ratio B / A of the content of the component (B) to the content of the component (A) is 0.1 to 20.

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