Soap-based detergent composition

Abstract

The objective is to provide a soap-based cleansing agent composition that has rich, high-quality lather and provides a moisturizing feeling that lasts even after towel drying. [Solution] The soap-based cleansing composition contains (A) a plant extract containing at least cherry leaf extract and rice bran extract, (B) a plant oil containing at least rice germ oil, (C) a polyhydric alcohol, and (D) 20 to 50% by mass of a higher fatty acid salt, thereby providing rich and high-quality lather and a moisturizing feeling that lasts even after towel drying.

Description

Technical Field

[0001] The present invention relates to a detergent composition, and more particularly to a soap-based detergent composition having rich and high-quality foaming and a moisturizing feeling that continues even after towel drying.

Background Art

[0002] In recent years, the number of consumers who recognize themselves as having sensitive skin has been increasing, and in detergent compositions, not only the cleaning function but also additional value functions such as not feeling tightness or stickiness after cleaning have been demanded. Among them, detergent compositions in the form of directly touching the skin for use such as facial cleansers and body soaps are particularly required to have such effects. On the other hand, additional value functions different from the above, such as good foaming and a pleasant feeling of the foam, are also demanded.

[0003] From that viewpoint, for the purpose of imparting a moist feeling after towel drying in a detergent composition, skin cleansers (for example, Patent Document 1) containing moisturizing agents such as sugars and sugar alcohols and polyglycerin, or low-irritation detergents (for example, Patent Document 2) containing polymers such as pullulan have been developed. However, the moisturizing agents such as sugars and sugar alcohols used in these detergent compositions, and polymers such as polyglycerin and pullulan are very hydrophilic and tend to flow during cleaning, so they are insufficient as the moisturizing feeling after towel drying.

[0004] In addition, liquid detergent compositions (for example, Patent Document 3) combining a fatty acid soap with a liquid oil composed of an oil or hydrocarbon, and detergent compositions (for example, Patent Document 4) containing a pullulan derivative obtained by substitution with an acyl group have been developed, and they are sufficient as the moisturizing feeling. However, the liquid oil composed of an oil or hydrocarbon used in these detergent compositions, and the pullulan derivative obtained by substitution with an acyl group have the drawback of causing a decrease in foaming, and the creaminess of the foam quality is not satisfactory.

[0005] Against this backdrop, there is a need for a cleansing agent composition that produces a rich, high-quality lather and provides a moisturizing feeling that lasts even after towel-drying. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Japanese Patent Publication No. 2001-31560 [Patent Document 2] Japanese Patent Publication No. 2002-12538 [Patent Document 3] Japanese Patent Publication No. 2002-356699 [Patent Document 4] Patent No. 6978763 [Overview of the Initiative] [Problems that the invention aims to solve]

[0007] This invention was made in view of the above circumstances, and aims to provide a soap-based cleansing agent composition that has rich, high-quality lather and a moisturizing feeling that lasts even after towel drying. [Means for solving the problem]

[0008] As a result of diligent research to achieve the above objectives, the inventors of the present invention have discovered that by combining a plant extract containing at least cherry leaf extract and rice bran extract, a plant oil containing at least rice germ oil, a polyhydric alcohol, and a higher fatty acid salt, a soap-based cleansing agent composition can be obtained that has rich, high-quality lather and a moisturizing feeling that lasts even after towel drying, thus completing the present invention.

[0009] The soap-based detergent composition of the present invention comprises (A) a plant extract containing at least cherry leaf extract and rice bran extract, (B) a vegetable oil containing at least rice germ oil, (C) a polyhydric alcohol, and (D) 20 to 50% by mass of a higher fatty acid salt. [Effects of the Invention]

[0010] According to the present invention, it is possible to provide a soap-based cleansing agent composition that has rich, high-quality lather and a moisturizing feeling that lasts even after towel drying. [Modes for carrying out the invention]

[0011] The soap-based detergent composition according to this embodiment will be described in detail below, but the present invention is not limited to the following embodiments. The present invention is not limited to the configurations described below, and various modifications are possible within the scope of the claims, and embodiments and examples obtained by appropriately combining the technical means disclosed in different embodiments and examples are also included in the technical scope of the present invention. Furthermore, unless otherwise specified in this specification, "A to B" representing a numerical range means "A or more, B or less".

[0012] In this specification, "soap-based detergent composition" refers to a detergent composition comprising a higher fatty acid salt.

[0013] The soap-based detergent composition according to this embodiment comprises (A) a plant extract containing at least cherry leaf extract and rice bran extract, (B) a vegetable oil containing at least rice germ oil, (C) a polyhydric alcohol, and (D) a higher fatty acid salt.

[0014] Component (A) used in the soap-based cleansing composition according to this embodiment is a plant extract containing cherry leaf extract and rice bran extract. The cherry leaf extract contained in the plant extract, which is component (A), is an extract of cherry leaves. The cherry leaf extract has effects such as improving rough skin and relieving itchiness. The rice bran extract is an extract of rice bran. The rice bran extract has moisturizing effects, antioxidant effects, and anti-inflammatory effects. In the soap-based cleansing composition according to this embodiment, component (A) improves lathering and contributes to a moisturizing feeling that lasts even after towel drying.

[0015] The cherry leaf extract and rice bran extract contained in the plant extract of component (A) may be extracted using conventional methods or may be commercially available. Specific examples of commercially available products include cherry extract B (Ichimaru Falcos Co., Ltd.) and rice bran extract (Koei Kogyo Co., Ltd.).

[0016] In the soap-based detergent composition according to this embodiment, the amount of component (A) is preferably 0.1 to 3.0% by mass relative to the total mass of the soap-based detergent composition. If the amount of component (A) is 0.1% by mass or more, the moisturizing effect can be further enhanced. Furthermore, if the amount of component (A) is 3.0% by mass or less, browning of the cosmetic and the formation of precipitates can be suppressed.

[0017] Component (B) used in the soap-based cleansing composition according to this embodiment is a vegetable oil containing rice germ oil. The rice germ oil contained in the vegetable oil, which is component (B), has an emollient effect and provides a moisturizing feeling that continues even after towel drying.

[0018] The rice germ oil contained in ingredient (B) may be extracted using conventional methods or may be a commercially available product. A specific example of a commercially available product is commercially available rice germ oil (PRO-15) (Tsukuno Foods Industry).

[0019] In the soap-based detergent composition according to this embodiment, the amount of component (B) is preferably 0.1 to 3.0% by mass relative to the total mass of the soap-based detergent composition. If the amount of component (B) is 0.1% by mass or more, the moisturizing effect can be further enhanced. Furthermore, if the amount of component (B) is 3.0% by mass or less, browning of the cosmetic and the formation of precipitates can be suppressed.

[0020] Component (C) used in the soap-based cleaning composition according to this embodiment is a polyhydric alcohol. The polyhydric alcohol contributes to an improvement in the moist feeling after towel drying. Examples of the polyhydric alcohol include glycerin, 1,3-butylene glycol, ethylene glycol, diethylene glycol, isoprene glycol, dipropylene glycol, diglycerin, sorbitol, maltitol, and the like. Among these, glycerin and 1,3-butylene glycol are preferred.

[0021] Component (D) used in the soap-based cleaning composition according to this embodiment is a higher fatty acid salt. The fatty acid constituting the higher fatty acid salt is preferably a saturated fatty acid having 8 to 22 carbon atoms. Examples of the higher fatty acid include single fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, fatty acids derived from coconut oil fatty acid, beef tallow fatty acid, castor oil fatty acid, olive oil fatty acid, palm oil fatty acid, or mixtures thereof. Examples of the salt constituting the higher fatty acid salt include alkali metal salts such as sodium salt and potassium salt, lower alkanolamine salts, etc., and preferably, sodium salt and potassium salt.

[0022] Specific examples of the higher fatty acid salt, which is the component (D) used in the soap-based detergent composition according to this embodiment, include sodium laurate, sodium myristate, sodium palmitate, sodium stearate, sodium isostearate, sodium oleate, potassium laurate, potassium myristate, potassium palmitate, potassium stearate, potassium isostearate, potassium oleate, triethanolamine laurate, triethanolamine myristate, triethanolamine palmitate, triethanolamine stearate, triethanolamine isostearate, triethanolamine oleate, sodium coconut oil fatty acid, sodium beef tallow fatty acid, sodium castor oil fatty acid, sodium olive oil fatty acid, sodium palm oil fatty acid, sodium palm kernel oil fatty acid, potassium coconut oil fatty acid, potassium beef tallow fatty acid, potassium castor oil fatty acid, potassium olive oil fatty acid, potassium palm oil fatty acid, potassium palm kernel oil fatty acid, triethanolamine coconut oil fatty acid, triethanolamine beef tallow fatty acid, triethanolamine castor oil fatty acid, triethanolamine olive oil fatty acid, triethanolamine palm oil fatty acid, triethanolamine palm kernel oil fatty acid, and the like. In the soap-based detergent composition according to this embodiment, these higher fatty acid salts can be used alone or in combination of two or more kinds.

[0023] In the soap-based detergent composition according to this embodiment, the blending amount of the component (D) is 20 to 50% by mass, preferably 25 to 40% by mass, more preferably based on the total mass of the soap-based detergent composition. If the blending amount of the component (D) is 20% by mass or more, a good amount of foam and foam quality (creaminess) can be sufficiently obtained.

[0024] The soap-based detergent composition according to this embodiment can be suitably used as a skin detergent such as a facial wash, cleansing, body shampoo, hand soap, shaving preparation, massage preparation, etc. Also, it can be used in the form of a viscous liquid, cream, etc., and is particularly preferably used as a facial wash foam and a liquid body shampoo.

Examples

[0025] Next, the soap-based detergent composition according to this embodiment will be described in detail with reference to examples. However, this does not limit the possibilities. First, we will explain the test methods and evaluation methods used in each example.

[0026] A panel of 10 experts evaluated the detergent compositions of the examples and comparative examples by sensory evaluation regarding foam quality (creamyness) and the duration of moisturizing effect after towel drying. The evaluation criteria were as follows:

[0027] [Foam quality (creamy)] ◎: Excellent. 8 or more subjects reported that the foam quality was good (creamy). ○: Good. The number of subjects who answered that the foam quality was good (the foam quality was creamy) was 6 or more, but less than 8. △: Slightly poor. The number of subjects who answered that the foam quality was good (creamy) was between 4 and 6. ×: Poor. Fewer than 4 subjects answered that the foam quality was good (the foam was creamy).

[0028] [Long-lasting moisturizing effect after towel-drying] ◎: Excellent. More than 8 subjects reported feeling moisturized even 30 minutes after towel-drying. ○: Good. The number of subjects who reported feeling moisturized 30 minutes after towel-drying was 6 or more, but less than 8. △: Slightly poor. 4 or more subjects reported feeling moisturized 30 minutes after towel-drying, but fewer than 6 subjects. ×: Poor. Fewer than 4 subjects reported feeling moisturized 30 minutes after towel-drying.

[0029] Detergent compositions with the compositions shown in Tables 1 and 2 for Examples 1-13 and Comparative Examples 1-4 were prepared by conventional methods. The results of the evaluation of foam quality (creamyness) and the duration of moisturizing effect after towel drying are also shown in Tables 1 and 2. Note that the amounts used in all the following examples and comparative examples are in mass percent.

[0030] [Table 1]

[0031] [Table 2]

[0032] As is clear from Tables 1 and 2, Examples 1 to 13 all showed superior performance compared to Comparative Examples 1 to 4.

Claims

[Claim 1] (A) A plant extract containing at least cherry leaf extract and rice bran extract, (B) A vegetable oil containing at least rice germ oil, (C) Polyhydric alcohols and (D) 20-50% by mass of higher fatty acid salts, A soap-based detergent composition characterized by containing the following:

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