JP2013091609A - Cleansing agent composition - Google Patents

Abstract

[PROBLEMS] To provide a moist skin feel after washing with excellent stability over time, good usability and mildness to the skin, despite the incorporation of a large amount of oil. A cleaning composition is provided.
A cleaning composition containing the following components (A) to (E):
(A) Fatty acid ester consisting of higher fatty acid and branched alcohol 30 to 80% by mass
(B) Silica (C) acryloyldimethyltaurate-vinylpyrrolidone copolymer (D) one or more detergent components selected from anionic surfactants, amphoteric surfactants and nonionic surfactants (E ) Water [selection figure] None

Description

  The present invention relates to a detergent composition that has good stability and can give a moist skin feel after washing.

  Conventionally, as a skin cleanser such as a facial cleanser or body soap, an alkaline skin cleanser containing a higher fatty acid as a main component has been widely used (for example, see Patent Documents 1 to 3). Although these detergents are excellent in foaming and provide a refreshing feel, they are not always satisfactory in the feeling that the skin becomes tight or squeaks after use. In recent years, many weakly acidic detergents have been proposed and marketed (see, for example, Patent Documents 4 to 6). These weakly acidic detergents have a growing number of users for reasons such as less irritation to the skin and a moist feel after washing, etc., but there may be problems with foaming and stickiness when washed out. In some cases, the moisture retention level was not sufficient.

  On the other hand, it is widely known that an oil agent is blended into the cleaning composition to give a moisture that allows the oil agent to adhere to the skin after cleaning (see Patent Documents 7 and 8).

Japanese Patent Laid-Open No. 5-001300 Japanese Patent Laid-Open No. 9-012444 Japanese Patent Laid-Open No. 10-310798 Japanese Patent Laid-Open No. 5-287297 JP 2001-031561 A JP 2001-107097 A Japanese Patent No. 3033050 Japanese Patent No. 4253255

  However, in a cleaning composition containing an oil agent, the amount of the oil agent that can be added is limited due to the problem of stability over time, and a sufficient moisturizing effect is not always obtained. Therefore, the object of the present invention is to provide a skin feel that is moist after washing, with excellent stability over time, good use feeling and mildness to the skin, even though it contains a large amount of oil. It is in providing the cleaning composition which can give.

  As a result of diligent research in view of the above circumstances, the present inventor used a large amount of a fatty acid ester composed of a higher fatty acid and a branched alcohol as an oil agent, and combined with silica and an acryloyldimethyltaurate / vinylpyrrolidone copolymer. The present invention has found that a detergent composition having a good feeling, mild to the skin, capable of giving a moist skin feel to the washed skin, and having a good stability over time can be obtained. Was completed.

That is, the present invention provides a cleaning composition containing the following components (A) to (E).
(A) Fatty acid ester consisting of higher fatty acid and branched alcohol 30 to 80% by mass
(B) Silica (C) acryloyldimethyltaurate-vinylpyrrolidone copolymer (D) one or more cleaning ingredients (E) selected from anionic surfactants, amphoteric surfactants and nonionic surfactants water

  According to the present invention, despite the presence of a large amount of oil, the stability over time and the feeling of use are good, the skin is mild, and the skin after washing is moistened. It is possible to provide a cleaning composition that can be used.

  Hereinafter, embodiments of the present invention will be described in detail.

  The component (A) of the present invention is a fatty acid ester composed of a higher fatty acid and a branched alcohol, and is a base of a cleaning composition, and at the same time, cleans oily dirt on the skin and adheres to the skin after cleaning. It is an oil that has the effect of giving moisture to the skin. Examples of the higher fatty acid constituting the fatty acid ester include fatty acids having 12 to 30 carbon atoms, preferably fatty acids having 12 to 24 carbon atoms, which may be saturated or unsaturated, May also be branched. Examples thereof include linear saturated fatty acids such as lauric acid, myristic acid, palmitic acid and stearic acid, and linear unsaturated fatty acids such as oleic acid, linoleic acid, eicosenoic acid and erucic acid. On the other hand, the branched alcohol constituting the ester is not particularly limited as long as it is a branched alcohol having a hydroxyl group capable of forming an ester with the higher fatty acid. The branched alcohol may be either saturated or unsaturated, but in the present invention, a branched saturated alcohol having 3 to 22 carbon atoms is preferable, and a branched saturated alcohol having 6 to 18 carbon atoms is more preferable. preferable.

  Specific examples of fatty acid esters comprising higher fatty acids and branched alcohols include hexyldecyl laurate, isopropyl myristate, octyldodecyl myristate, isocetyl myristate (2-hexyldecyl), isopropyl palmitate, octyl palmitate (2- Ethyl hexyl), isostearyl palmitate, isopropyl stearate, octyl stearate (2-ethylhexyl), isocetyl stearate (2-hexyldecyl), octyldodecyl oleate, isopropyl linoleate, octyldodecyl erucate and the like. In the present invention, fatty acid esters composed of higher fatty acids having 14 to 22 carbon atoms and branched saturated alcohols having 6 to 12 carbon atoms are preferred, and 2-ethylhexyl palmitate and / or 2-ethylhexyl stearate are preferably used.

  In the cleaning composition of the present invention, the content of the fatty acid ester (oil) composed of (A) a higher fatty acid and a branched alcohol is 30 to 80% by mass (hereinafter simply referred to as%) based on the total amount of the cleaning composition. .). By setting the content within this range, it is possible to exhibit an excellent effect in terms of touch. Further, the content of the (A) oil agent is preferably 35 to 70%, more preferably 40 to 60%, from the viewpoint of feeling after use and moist feel.

  The silica (B) used in the present invention is not particularly limited as long as it is generally used in cosmetics, but fumed silica that can be used as a thickener for oils is preferably used, and the primary particle size is further increased. Fumed silica in the range of 5-50 nm is preferably used. Fumed silica can exhibit more excellent effects in terms of lack of a feeling of tension after washing and a moist feeling. The primary particle diameter of silica can be measured with a transmission electron microscope.

  The content of (B) silica in the present invention is preferably in the range of 0.1 to 10%, more preferably 0.5 to 5%, even more preferably, based on the total amount of the detergent composition. Is 1-3%. If it is these ranges, the more excellent usability | use_condition can be acquired from the thickening effect.

  The (C) acryloyldimethyltaurate-vinylpyrrolidone copolymer used in the present invention is a copolymer constructed from 2-acrylamido-2-methylpropanesulfonic acid or a salt thereof and N-vinylpyrrolidone, and is a commercially available product. An acryloyldimethyltaurine ammonium / N-vinylpyrrolidone copolymer (Aristoflex AVC; manufactured by Clariant) may be mentioned.

  In the present invention, the content of the (C) acryloyldimethyltaurate / vinylpyrrolidone copolymer is preferably in the range of 0.05 to 5%, more preferably 0.00%, based on the total amount of the detergent composition. It is 1-3%, More preferably, it is 0.1-1.5%. If it is these ranges, the more excellent usability | use_condition can be acquired from the outstanding thickening effect.

One or more cleaning components selected from (D) anionic surfactant, amphoteric surfactant and nonionic surfactant used in the present invention are not particularly limited. Examples of the anionic surfactant include: Fatty acid soap, alkyl sulfate type, alkyl ether sulfate type, α-olefin sulfonate type, alkyl phosphate type, alkyl ether carboxylate type, N-acyl amino acid salt type (N-acyl sarcosine salt, N-acyl salt) -Β-alanine salt, N-acyl glutamate, N-acyl aspartate, etc.), sulfosuccinate type, taurine type and other anionic surfactants. Examples of amphoteric surfactants include betaine-type amphoteric surfactants such as sulfobetaine type, alkylbetaine type, and amidopropyl betaine type, and amphoteric surfactants such as imidazolinium type. Examples of nonionic surfactants include alkyl glucosides and sugar fatty acid esters.
In the present invention, from the viewpoint of foaming and detergency, it is preferable to use a combination of two or more of these three types of surfactants. Anionic surfactants, nonionic surfactants, and amphoteric surfactants are used. Agents and nonionic surfactants, anionic surfactants and amphoteric surfactants, anionic surfactants, amphoteric surfactants, and nonionic surfactants. It is more preferable to use three types in combination.

  The content of one or more cleaning components selected from (D) anionic surfactant, amphoteric surfactant and nonionic surfactant in the present invention is purely based on the total amount of the cleaning composition. It is preferable to set it as 1 to 30% of range, More preferably, it is 5 to 25%, More preferably, it is 10 to 20%. If it is these ranges, the more outstanding effect will be acquired from a viewpoint of foaming and the touch of the skin after washing | cleaning.

  The content of water (E) in the present invention is preferably in the range of 1 to 50%, more preferably including water contained as a solvent in the detergent component, based on the total amount of the detergent composition. Is 10 to 40%, more preferably 20 to 30%. Within these ranges, more excellent formulation stability can be obtained.

  The cleaning composition of the present invention comprises (A) a fatty acid ester comprising a higher fatty acid and a branched alcohol, and (B) an oil gel comprising silica, (C) an acryloyldimethyltaurate-vinylpyrrolidone copolymer, (D) It can manufacture by disperse | distributing the water phase which consists of a washing | cleaning component and (E) water.

  The cleaning composition of the present invention comprises components that are generally blended in the cleaning agent, for example, emulsifiers such as polyoxyethylene alkyl ether, moisturizing components such as propylene glycol, glycerin, and polyethylene glycol, and pearls such as fatty acid ethylene glycol. Brighteners, water-soluble polymer compounds, extracts derived from animals and plants, sequestering agents, preservatives, pH adjusters, ultraviolet absorbers, antioxidants, pigments and fragrances can be appropriately blended.

  The cleaning composition of the present invention can be applied to the whole body, but is preferably applied to the skin, and more preferably applied to the face as a facial cleanser. It is preferable to use after washing according to a conventional method and then rinsing with water.

  EXAMPLES Next, although an Example demonstrates this invention further in detail, this invention is not limited to this. In addition, all the compounding quantities in an Example are the mass%.

Examples 1-7 and Comparative Examples 1-4
A cleaning composition having the composition shown in Table 1 was prepared according to a conventional method. After storing in a thermostat at 50 ° C. for 1 month, the appearance was observed. Those with no change are indicated in the table with ◯, and those with separation are indicated with ×. In addition, a practical test was conducted on 20 female panelists, and each test item (foaming, slickness during pouring, a feeling of squeezing after washing, a feeling of moistness) was evaluated based on the following criteria. The results are shown in Table 1 as the average score.

<Evaluation criteria>
5 points: very good 4 points: good 3 points: normal 2 points: somewhat bad 1 point: bad

  As is clear from Table 1, all of the cleaning compositions of Examples using the components of the present invention had excellent performance. Comparative Example 1 is an example in which another thickening polymer was used in place of the component (C). However, although it was excellent in stability, aggregates thought to be derived from silica and a copolymer were generated at the time of washing. It was very inferior. Comparative Examples 2 and 3 are examples in which the component (B) or the component (C) is removed from the cleaning composition of the present invention, but the stability is greatly inferior, and the object of the present invention is achieved. could not. Comparative Example 4 is an example in which the component (A) of the cleaning composition of the present invention was replaced with methylpolysiloxane, but it was greatly inferior in terms of foaming.

Example 8 (face wash)
Next, a face wash was prepared by a conventional method with the following composition.
Blending ingredients Blending amount (%)
2-ethylhexyl stearate 40
Castor oil 10
Silica (Aerosil200; made by Evonik) 2
Acryloyldimethyltaurate ammonium 0.5
/ N-vinylpyrrolidone copolymer N-coconut oil fatty acid acylglycine potassium 5
Lauryldimethylaminoacetic acid betaine 2
Palm oil fatty acid amidopropyl betaine 2
Lauryl glucoside 3
Polyoxyethylene (10) behenyl ether 3
Glycerin 2
Diglycerin 2
Sorbitol solution 2
Phenoxyethanol 0.5
Citric acid 0.3
Soymilk fermented liquid (Sansho Pharmaceutical Co., Ltd.) 0.1
Lactobacillus / pear juice fermented liquid (Ichimaru Falcos) 0.1
Carrot juice (Esperis) 0.1
Apricot juice (Esperis) 0.1
Sodium hyaluronate (2) 0.01
Bilberry leaf extract (Ichimaru Falcos) 0.1
Fragrance 0.1
Water balance

  In addition, the fragrance | flavor used by said prescription is the following.

  For the detergent composition (face wash) of Example 8, the stability, foaming, luster on pouring, the feeling of stickiness after washing, and the moist feeling were evaluated in the same manner as in the above Example. Good results were also obtained for the test items.

  According to the present invention, it is possible to provide a cleaning composition that has good stability over time, excellent foaming, and a moist skin feel after cleaning despite the incorporation of a large amount of oil.

Claims (6)

A cleaning composition containing the following components (A) to (E).
(A) Fatty acid ester consisting of higher fatty acid and branched alcohol 30 to 80% by mass
(B) Silica (C) acryloyldimethyltaurate-vinylpyrrolidone copolymer (D) one or more detergent components selected from anionic surfactants, amphoteric surfactants and nonionic surfactants (E )water   The cleaning composition according to claim 1, wherein the silica of component (B) is fumed silica having a primary particle diameter of 5 to 50 nm.   The cleaning composition according to claim 1 or 2, wherein the component (A) is 2-ethylhexyl palmitate and / or 2-ethylhexyl stearate.   (D) Content of a component is 1-30 mass%, The cleaning composition of any one of Claims 1-3.   (B) Content of a component is 0.5-5 mass%, The cleaning composition of any one of Claims 1-4.   (C) Content of a component is 0.05-5 mass%, The cleaning composition of any one of Claims 1-5.