JP7327902B2 - detergent composition - Google Patents

Description

The present invention relates to detergent compositions.

Conventionally, various products have been developed as detergents, and those based on higher fatty acid salts have excellent detergency, foam well, and have a refreshing feel. etc. However, due to its strong detergency, even the sebum necessary for the skin is removed, causing problems such as dryness and tightness of the skin after washing. Generally, in the case of higher fatty acid salts, the shorter the chain length of the fatty acid, the better the foamability, but the lower the foam quality. tend to cause problems.

In addition, there are examples of combined use with polyoxypropylene adducts of diglycerin (Patent Document 1) and combined use with plant extracts (Patent Document 2) in order to improve skin dryness and tightness after washing. However, none of them are effective enough to solve the problem.

It is known to add saccharides such as sorbitol and maltitol, and nonionic surfactants to detergents for the purpose of preventing excessive defatting (Non-Patent Document 1).

"New Cosmetic Studies" 2nd edition, edited by Takeo Mitsui, published by Nanzando, 2001, page 350

JP-A-6-116135 JP-A-10-88193

Conventional moisturizing agents such as higher fatty acid salts, sugars, and nonionic surfactants are used in combination to slightly increase the moisturizing effect, but it does not improve the foam quality, such as the roughness and lack of elasticity of the foam peculiar to higher fatty acid soaps. was not reached. Accordingly, it is an object of the present invention to provide a cleansing composition that has detergency, a moist feel after washing, and foam quality despite the fact that it uses a higher fatty acid salt as a base.

The present invention provides a detergent composition containing the following (A) to (C).
(A) Higher fatty acid salt (B) Monosaccharides and/or disaccharides having 4 or more carbon atoms, and one or more selected from nonionic surfactants having an HLB value of 12 or more (C) Acylamino acid powder

The cleansing composition of the present invention exhibits effects of excellent detergency, moist feeling after washing, and excellent foam quality.

A mode for carrying out the present invention will be described below.

The higher fatty acid constituting the higher fatty acid salt used in the present invention may be either saturated or unsaturated, and preferably has 8 to 24 carbon atoms, particularly 10 to 22 carbon atoms. Among these fatty acids, it is preferable to use linear saturated fatty acids. Preferred specific examples include lauric acid, myristic acid, palmitic acid, stearic acid, coconut oil fatty acid, reduced coconut oil fatty acid, palm kernel fatty acid and the like. Among these fatty acids, one or more selected from lauric acid, myristic acid, palmitic acid, and stearic acid are preferably contained from the viewpoint of foamability, safety, and stability. Alkali agents that form salts with these higher fatty acids include alkali metal salts such as sodium and potassium, ammonium salts, monoethanolamine, diethanolamine, triethanolamine, 2-amino-2-methylpropanol, and 2-amino-2. -Alkanolamine salts such as methylpropanediol, basic amino acid salts such as lysine and arginine, and the like. Among these, potassium and arginine are particularly preferred.

Moreover, these higher fatty acid salts do not necessarily have to be added to the detergent composition as fatty acid salts, and the higher fatty acids and bases may be added separately to form fatty acid salts in the composition.

The amount of the higher fatty acid salt to be blended varies depending on the dosage form of the detergent composition and is not particularly limited. In the case of a solid cleanser, the blending amount is preferably 90% by mass or less. In the case of a paste cleanser, it is preferably 55% by mass. In the case of liquid cosmetics, it is preferably 25% by mass.

The monosaccharide and/or disaccharide having 4 or more carbon atoms used in the present invention is not particularly limited as long as it can be used in detergents. Examples of such monosaccharides and/or disaccharides include sorbitol, glucose, erythritol, mannitol, fructose, xylitol, sucrose, lactose, maltose, maltitol, trehalose and the like. Among such sugars, it is preferable to use sorbitol from the viewpoint of the effects of the present invention.

When one or more selected from monosaccharides and/or disaccharides having 4 or more carbon atoms are blended, the blending amount is not particularly limited, but is preferably 1 to 20% by mass based on the total amount of the detergent composition. .

As the nonionic surfactant having an HLB value of 12 or more to be used in the present invention, any one that is used in ordinary detergent compositions may be used. Specific examples include polyoxyethylene sorbitan fatty acid esters, polyglycerin fatty acid esters, polyoxyethylene fatty acid esters, polyoxyethylene alkyl ethers, and polyoxyethylene hydrogenated castor oils.

Polyoxyethylene sorbitan fatty acid esters include POE (80) sorbitan monolaurate (HLB value 19.0), POE (20) sorbitan monolaurate (HLB value 16.9), POE (20) sorbitan monopalmitate (HLB value 15.6), POE (20) sorbitan monostearate (HLB value 14.9), and the like. Examples of polyglycerol fatty acid esters include hexaglyceryl monolaurate (HLB value 14.5) and decaglyceryl monolaurate (HLB value 15.5). Examples of polyoxyethylene fatty acid esters include POE monolaurate (10) (HLB value 12.5) and POE monostearate (25) (HLB value 15.0). Polyoxyethylene alkyl ethers include POE (9) lauryl ether (HLB value 14.5), POE (10) cetyl ether (HLB value 13.5), POE (20) phytosterol ether (HLB value 15.5), POE (30) phytosterol ether (HLB value 18.0) and the like. Polyoxyethylene hydrogenated castor oil includes POE (40) hydrogenated castor oil (HLB value 12.5), POE (60) hydrogenated castor oil (HLB value 14.0), and the like.

In the present invention, among these nonionic surfactants, it is preferable to use one or two selected from POE (80) sorbitan monolaurate and decaglyceryl monolaurate.

When a nonionic surfactant having an HLB value of 12 or more is blended, the blending amount is not particularly limited, but is 0.5 to 5% by mass and 0.5 to 2% by mass with respect to the total amount of the detergent composition. is preferred.

The acyl amino acid powder used in the present invention is not particularly limited as long as it can be incorporated into the detergent composition. Specific examples include acyllysines such as lauroyllysine, palmitoyllysine and caproyllysine; acylornithines such as stearoylornithine; acylarginines such as lauroylarginine; acylhistidines such as cocoylhistidine; As a commercially available product, Amihope LL (manufactured by Ajinomoto Co., Inc.), which is lauroyl lysine, and the like can be used.

The amount of the acyl amino acid to be blended varies depending on the dosage form of the detergent composition, the content of the higher fatty acid salt, etc., but it is preferably 0.001 to 1% by mass based on the total amount of the detergent composition.

In the present invention, lipophilic glyceryl monostearate can be blended. The lipophilic glyceryl monostearate is not particularly limited as long as it can be blended with ordinary detergents. Examples of commercially available lipophilic glyceryl monostearate include NIKKOL (registered trademark) MGS series (manufactured by Nikko Chemicals) and Monogly MB (manufactured by NOF Corporation).

In the present invention, a polyhydric alcohol can be blended. The polyhydric alcohol is not particularly limited as long as it can be usually blended in detergents. Examples of polyhydric alcohols include 1,3-butylene glycol, glycerin, diglycerin, polyethylene glycol, pentylene glycol, hexylene glycol and the like.

In addition to the components described above, the cleansing agent of the present invention may contain optional components commonly used in the field of cleansing agents, etc., to the extent that the effects of the present invention are not impaired. Specific examples include purified water, oils, surfactants, thickeners, preservatives, fragrances, ultraviolet absorbers, moisturizing agents, antioxidants, anti-inflammatory agents, and antibacterial agents.

The cleansing agent of the present invention is produced by a conventional method, and can be in the form of solid, liquid, milky lotion, cream, paste, gel, ointment, and the like. From the point of view of the effect of the present invention, it is preferable to take a liquid or paste dosage form having an appropriate viscosity. The cleansing agent of the present invention can be used as a skin cleansing agent and a hair cleansing agent, and is particularly preferably used as a skin cleansing agent.

EXAMPLES The present invention will be described below using examples, but the technical scope of the present invention is not limited by these examples.

Evaluation methods for the examples and comparative examples of the present invention are as follows.

(Evaluation of Feeling in Use) Detergency, Moist Feeling after Washing, and Foam Quality Two expert panelists conducted body use tests, and absolute evaluations were made for the foaming and foam quality of the cleansers shown in the table. Evaluation results were judged by consensus using the following criteria.
<Evaluation results>
◎: Very good ○: Good △: Slightly bad ×: Bad

Tables 1 and 2 show formulations of body washes according to Examples and Comparative Examples of the present invention. A cleaning agent was prepared according to a standard method and used for evaluation.

The examples of the present invention were excellent in terms of foam quality such as elasticity and fineness of foam, and moist feeling after washing.

Claims (1)

A detergent composition containing the following (A) to (C).
(A) Higher fatty acid salt having 8 to 24 carbon atoms
(B) 1 or 2 or more selected from monosaccharides and/or disaccharides having 4 or more carbon atoms, and 1 or 2 or more selected from nonionic surfactants having an HLB value of 12 or more (C) lauroyl lysine