TWI709413B - Skin cleanser in powder or granular form - Google Patents

Abstract

An objective of this invention is to provide a skin cleanser in powder or granular form with excellent foaming speed and smooth feeling after washing. The present invention provides a skin cleanser in powder or granular form containing N- acylglutamate and a linear higher alcohol with a carbon number of 20 to 24.

Description

Powder or granular skin cleansing material

The present invention relates to a powder or granular skin cleansing material.

The powdered skin cleansing material is prepared by mixing and pulverizing a cleansing agent, an inorganic powder or an organic powder that becomes a builder. In addition, when making granular skin cleansing materials, it is prepared by mixing and pulverizing and granulating under optimum conditions. Since powdered or granular skin cleansing materials do not contain water compared to liquid or gel forms, they can be commercialized without preservatives and antiseptics, providing a safer product. However, the powdery or granular skin cleansing material has the following disadvantages: it cannot be uniformly dissolved when dissolved in water with the palm or sponge, etc., and there are lumps called "dumps" or "powder cakes". In addition, there is a disadvantage that it is inferior to foaming liquid and gel forms. In particular, N-glycoglutamate is weakly acidic and less irritating to the skin. Therefore, it is widely used as a safe cleansing ingredient, but it is difficult to dissolve in water when it is made into a powdered cleanser. The disadvantage of poor foaming.

The applicant proposed the following powdered skin cleansing material: Since cationized glucan is formulated in the prescription, it has high safety, improved solubility during use, and excellent foamability. In addition, it can be foamed in the palm of the hand. Does not produce roughness and improves usability (Patent Document 1: Japanese Patent No. 4712222 Bulletin). In addition, a powdered detergent composition formulated with N-glycoglutamate or higher fatty acid salt, polyamino acid and neutral amino acid with excellent foaming properties has been proposed (Patent Document 2: Japanese Patent No. Bulletin 4253687); blended with N-glycoglutamate, branched glucan with cyclic structure, hydroxypropyl starch phosphate, polydextrose foam and powdery wash with excellent foaming properties Clean material (Patent Document 3: Japanese Patent No. 5662986).

In addition, a powdered skin cleansing agent with improved foaming speed and foam quality prepared by blending N-aminoglutamate and fatty amide alkyl dimethylamine oxide has also been proposed (Patent Document 4: Japanese Special 2016-188177 Bulletin); blending with N-glycoglutamate and N-fatty acid glycine aminoethyl-N-2-hydroxyethylglycine to improve the foaming speed and foam quality Powdered skin cleansing material (Patent Document 5: JP 2016-188182 A).

However, people are demanding further improvements in foaming speed and foam quality.

On the other hand, as a special feature other than foaming and foam quality, a skin cleanser that can give a smooth touch when flushed is sought. For example, a solid detergent composition containing a fatty acid salt, an acyl isethionate, and solid fat, and which can obtain a smooth touch when flushed with water, has been proposed (Patent Document 6: Japanese Patent Application Laid-Open No. 2008-189872 ); Contains acyl isethionate, anionic surfactant and 2-ethylhexyl glyceryl ether, and immediately after washing off the detergent with tap water, it can give a smooth skin when touching the skin with your fingers Composition (Patent Document 7: JP 2015-124214 A); contains a thickening polymer compound, an N-amino acid type surfactant and an alkylamino dicarboxylic acid type surfactant, and Washing paint with excellent smoothness after washing (Patent Document 8: JP 2008-100921 A).

Although it is possible to obtain a cleansing material with a smooth touch when flushing with water, there is still no product that can fully obtain this touch in the form of a powdered skin cleansing material, and the powdered skin cleansing material requires a smoother feeling. improve. The invention of this application is to pursue the realization of this kind of touch with the dosage form of powdered skin cleansing material.

Most linear higher alcohols with 20 to 24 carbon atoms are used as emulsion stabilizers and are formulated in skin care products such as emulsions and creams. Among the detergents, there are also those formulated in creams to stabilize the cream formulation. The condition in the skin cleanser. The straight-chain higher alcohols with 20 to 24 carbon atoms are soft and smooth paraffin-like solids at room temperature, and no attempt has been made to pulverize them into powder and mix them into powder or granular skin cleansing materials. In addition, it is not common to pulverize linear higher alcohols having 20 to 24 carbon atoms into powder.

[Prior Technical Literature] [Patent Literature]

Patent Document 1: Japanese Patent No. 4712222

Patent Document 2: Japanese Patent No. 4253687

Patent Document 3: Japanese Patent No. 5662986

Patent Document 4: Japanese Patent Application Publication No. 2016-188177

Patent Document 5: Japanese Patent Laid-Open No. 2016-188182

Patent Document 6: Japanese Patent Laid-Open No. 2008-189872

Patent Document 7: Japanese Patent Laid-Open No. 2015-124214

Patent Document 8: Japanese Patent Application Laid-Open No. 2008-100921

The subject of the present invention is to provide a powdery or granular skin cleansing material with excellent foaming speed and smoothness after washing.

1. A skin cleansing material, which is in powder or granular form and contains N-acylglutamate and a linear higher alcohol having 20 to 24 carbon atoms.

2. The skin cleansing material according to 1., wherein the N-acylglutamate and the linear higher alcohol having 20 to 24 carbon atoms are prepared in a mass ratio of 100:1 to 1:1 Deployment.

3. The skin cleansing material according to 1. or 2. wherein the linear higher alcohol having 20 to 24 carbon atoms contains behenyl alcohol.

Compared with the conventional powdered skin cleansing materials, the skin cleansing material of the present invention has excellent solubility, is less likely to produce "dumps" or "powder agglomerates" when dissolved in water, and can foam quickly. The powdery or granular skin cleansing material needs to be foamed before use, but the skin cleansing material of the present invention may not feel stress due to foaming. In addition, the skin cleansing material of the present invention has an excellent smoothness after rinsing, and can feel the removal of skin dirt and the skin surface becoming smooth and beautiful.

)是指“(1)移動時像滑動般的平順。滑溜溜的。(2)表面 平順，而且容易滑動。”沖洗後的光滑感是指在沖洗後肌膚潤濕的狀態下，用手指觸摸肌膚時，手指像滑動般平順地移動的狀態，亦即，手指無阻滯感地移動的狀態。也可以說是無發黏、黏糊、由摩擦感引起的滯澀的觸感。粉末皮膚洗淨料的劑型中，幾乎無發黏、黏糊的情況，惟會因為所調配的表面活性劑、保濕劑而有發生發黏、黏糊的問題之情形。另外，存在如下問題：在粉末皮膚洗淨料中，由於皮脂被去除、皂垢(皂渣)殘留於肌膚上，所以在肌膚和手指之間產生摩擦感，產生“滯澀”(緊繃)的觸感。這樣的“滯澀”有被認為是皮脂或污垢經去除所造成的觸感，但與光滑肌膚的觸感不同，通常不被認為是良好的觸感。所尋求的是不發黏、黏糊，且也無摩擦感引起的滯澀，為“光滑”的觸感並令人想起洗淨後的肌膚變平滑變美的感覺。 The skin cleansing material of the present invention has an excellent smooth feeling after washing. According to the records of Hirokien (Iwanami Bookstore), "Smooth" (

) Means "(1) It moves smoothly like sliding. It is slippery. (2) The surface is smooth and easy to slide." The smooth feeling after rinsing means that the skin is wet after rinsing and touched with your fingers On the skin, the fingers move smoothly like sliding, that is, the fingers move without a sense of blocking. It can also be said that there is no stickiness, stickiness, and astringent touch caused by friction. In the powdered skin cleansing formulation, there is almost no stickiness or stickiness. However, stickiness and stickiness may occur due to the formulated surfactants and moisturizers. In addition, there is the following problem: in the powdered skin cleanser, since the sebum is removed and the soap scum (soap scum) remains on the skin, there is a feeling of friction between the skin and the fingers, resulting in "stagnation" (tightness) The touch. Such "stagnation" has a tactile sensation that is considered to be caused by the removal of sebum or dirt, but is different from the tactile sensation of smooth skin, and is generally not regarded as a good tactile sensation. What is sought is that it is not sticky, sticky, and has no astringency caused by friction. It is a "smooth" touch and reminiscent of the feeling of smooth and beautiful skin after washing.

Examples of the N-glycoglutamate used in the present invention include: N-lauric glutamate, N-myristyl glutamate, N-palmitate glutamate, and N-stearic acid Glutamate, N-oleoglutamate, etc. In addition, as these mixtures, N-(coconut oil fatty acid/palm oil fatty acid/sunflower oil fatty acid) glutamate, N-coconut oil fatty acid glutamate, N-palm oil Fatty acid glutamate, N-hydrogenated tallow fatty acid glutamate, etc. In addition, examples of the salt include alkali metal salts such as sodium and potassium, alkanolamine salts such as triethanolamine, and alkaline amino acid salts such as lysine and arginine.

The amount of N-glycoglutamate used in the present invention is preferably The powdery or granular skin cleansing material is 1 to 99% by mass, more preferably 10 to 50% by mass, and particularly preferably 15 to 40% by mass.

Examples of linear higher alcohols having 20 to 24 carbon atoms used in the present invention include arachidyl alcohol (C20), behenyl alcohol (C22), wood coke alcohol (C24), and the like. In addition, hydrogenated rapeseed alcohol containing behenyl alcohol as a main component can also be used.

The linear higher alcohols with 20 to 24 carbon atoms used in the present invention are preferably crushed by a pulverizer and sieved through a sieve with an aperture of 300 μm or less, and particularly preferably are sieved through a sieve with an aperture of less than 180 μm. When a linear higher alcohol with a particle size of more than 300μm is formulated, there is a concern that it will cause irritation during washing.

The blending amount of the linear higher alcohol having 20 to 24 carbon atoms used in the present invention is preferably 0.1 to 50% by mass, more preferably 0.5 to 10% by mass, particularly preferably 1 to 5% by mass.

The quality ratio of the N-acylglutamate used in the present invention and the linear higher alcohol having 20 to 24 carbon atoms is preferably 100:1 to 1:1, and more preferably 80:1 to 5:1, Especially preferred is 50:1 to 8:1.

Other ingredients

In the skin cleansing material of the present invention, as a surfactant, anionic surfactants, amphoteric surfactants, cationic surfactants, and nonionic surfactants other than N-glutamate can be formulated.

Examples of anionic surfactants include higher fatty acid salts, N-acyl alanine, N-acyl methyl taurate, N-acyl isethionate, and N-acyl glycinate. , Monoalkyl phosphate, ether carboxylate, alkyl sulfonate, sulfosuccinate, fatty amide alkyl dimethyl amine oxide, etc. As two The sexual surfactants include carboxybetaine type surfactants, sultaine type surfactants, amide betaine type surfactants, imidazoline type surfactants, and the like.

The skin cleansing material of the present invention may contain sugars, sugar alcohols, waxes, organic powders, inorganic powders, polymers, preservatives, metal ion blocking agents, ultraviolet absorbers, ultraviolet shielding agents, humectants, Perfume, pH adjuster, desiccant, etc. In addition, it can also contain other medicinal and physiologically active ingredients.

Examples of sugars and sugar alcohols include glucose, sorbitol, mannose, mannitol, galactose, galactitol, maltose, maltitol, trehalose, erythrose, erythritol, xylose, and xylose. Alcohol, sucrose, lactose, lactitol, difructose anhydride, etc.

Examples of waxes include rice bran wax, carnauba wax, and candelilla wax.

Examples of the organic powder include polyethylene powder, polystyrene powder, polymethyl methacrylate powder, nylon powder, polyurethane powder, agar powder, cork powder, starch, and the like.

Examples of the inorganic powder include talc, kaolin, silica, mica, zeolite, bentonite, titanium dioxide, and the like.

As polymers, acacia gum, tragacanth gum, galactan, guar gum, carrageenan, pectin, trixian gum, quince seeds, dextran, cationized dextran, poly Triglucose, carboxymethyl starch, collagen, casein, gelatin, methyl cellulose, methyl hydroxypropyl cellulose, hydroxyethyl cellulose, sodium carboxymethyl cellulose, hydroxypropyl methyl cellulose, sea Sodium alginate, carbopol, etc.

Examples of metal ion blocking agents include ethylenediaminetetraacetate salts such as disodium ethylenediaminetetraacetic acid, ethylenediaminetetraacetic acid, and sodium ethylenediaminetetraacetic acid.

The medicinal ingredients include vitamin Cs such as L-ascorbic acid, L-ascorbyl phosphate, L-ascorbyl monopalmitate, L-ascorbyl dipalmitate, L-ascorbic acid-2-glucoside, etc., and glutathione Whitening agents such as peptides and saxifrage extract, skin activators such as royal jelly, blood flow enhancers such as capsaicin, gingerone, tincture, ichthyol, caffeine, tannic acid γ-oryzanol, and glycyrrhizic acid derivatives , Glycyrrhetinic acid derivatives, azulene and other anti-inflammatory agents, maltose and sucrose condensates of common bacteria regulators, lysozyme chloride, etc.

The skin cleansing composition of the present invention is in the form of powder or granules.

The skin cleansing material of the present invention can be used to clean the face and body.

[Example]

As Examples 1 to 4 and Comparative Examples 1 to 4, each component was blended in the mass ratio shown in Table 1 to prepare cleansing powder. In addition, behenyl alcohol ("behenyl alcohol" manufactured by Advanced Alcohol Industry Co., Ltd.), hydrogenated rapeseed alcohol ("alcohol NO.20-B" manufactured by Advanced Alcohol Industry Co., Ltd.), and stearyl alcohol (higher alcohol "Stearyl Alcohol" manufactured by Industrial Co., Ltd.) was pulverized with a stirrer, passed through a sieve with an aperture of 180 μm, and then blended. As the stearic acid, "Nippon Oil Co., Ltd." "Nikko Stearic Acid NAA-180P-1" supplied in powder form was used as it was. Behenic acid is used directly as a powder "Behenic acid NAA-222S" manufactured by NOF Corporation as supplied.

The foaming speed of the cleansing powder and the smoothness after rinsing were evaluated based on the following criteria.

Assessment of foaming speed

10 professional reviewers each take 1g of the cleansing powder prepared in the palm of the hand, add about 2 to 3 mL of tap water, and let the hands together rub and foam for about 20 seconds, and then add 3 mL of tap water to make the air into the foam. Fully conduct frothing operation. The total time of the frothing operation is 1 minute, and the speed of frothing during the frothing operation is observed.

The foaming speed of the facial cleansing powder of Comparative Example 1 was used as a standard, and the evaluation was performed based on the following criteria.

2 points: fast foaming

1 point: constant foaming speed

0 points: slow foaming

The average value of the evaluation of the foaming speed by the reviewers was obtained, and the evaluation was performed based on the following criteria.

○: 1.5 points or more, 2 points or less

×: less than 1.5 points

The evaluation results are shown in Table 1.

Evaluation of smoothness after rinsing

Ten professional reviewers evaluated the smoothness after washing. The evaluation method is as follows.

Take 1g of the cleansing powder prepared in the palm of your hand, add about 2 to 3mL of tap water, let your hands together, rub and foam for about 20 seconds, and then add 3mL on one side One side of the tap water is fully bubbled in such a way that the air is drawn into the foam. The total time for the frothing operation is 1 minute.

Wash the foam while rubbing the hands together under the flow of tap water. After all the foam is washed away, evaluate the touch of the palm when rubbing the palm together in a wet state.

The smoothness of the cleansing powder of Comparative Example 1 after rinsing was used as a standard, and the evaluation was performed according to the following criteria.

4 points: Excellent smoothness

3 points: Slightly excellent smoothness

2 points: unchanged smoothness

1 point: slightly sluggish

0 points: stagnation

The average value of the evaluation of the smoothness after washing by the reviewers was obtained, and the evaluation was performed based on the following criteria.

◎: 3.5 points or more, 4 points or less

○: 2.5 points or more, less than 3.5 points

△: 1.5 points or more, less than 2.5 points

×: 0.5 points or more, less than 1.5 points

××: less than 0.5 points

The evaluation results are shown in Table 1.

The cleansing powders of Examples 1 to 4 containing behenol (C22) of the present invention have superior foaming speed and smoothness compared to the cleansing powder of Comparative Example 1 as a standard. Examples 1 and 4 containing 3% by mass or more of behenyl alcohol showed particularly excellent smoothness.

The cleansing powder of Comparative Example 2 contains stearyl alcohol (C18), but the foaming speed and smoothness are poor. The smoothness of the cleansing powders of Comparative Examples 3 and 4 containing linear fatty acids instead of linear higher alcohols was further reduced.

Prescription Example 1 Cleansing powder

Prescription example 2 Cleansing powder

Prescription example 3 Cleansing powder

Claims (3)

A skin cleansing material, which is in powder or granular form and contains N-glycoglutamate and a linear higher alcohol having 20 to 24 carbon atoms. The skin cleansing material described in item 1 of the scope of patent application, wherein the aforementioned N-acylglutamate and the aforementioned linear higher alcohol with 20 to 24 carbon atoms are in a mass ratio of 100:1 to 1:1 Make deployment. The skin cleansing material according to item 1 or 2 of the scope of patent application, wherein the aforementioned linear higher alcohol having 20 to 24 carbon atoms contains behenyl alcohol.