JP2963567B2 - Detergent composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detergent composition,
More specifically, the present invention relates to a detergent composition which is less irritating to the body such as hair and skin, and has good foaming properties and good feeling.

[0002]

BACKGROUND OF THE INVENTION Personal cleansing compositions generally contain an anionic surfactant as a main component, and soaps, i.e., higher fatty acid salts, for washing the skin, and hair washing for the hair. Alkyl sulfate and alkyl sulfonate are mainly used. Soaps used for skin cleansing have the drawback of causing squeaks and tension when rinsed.Alkyl sulfates and alkyl sulfonates used for hair cleansing have excellent detergency but are irritating. There was a problem.

[0003] Therefore, the use of a specific N-acylated amino acid type surfactant as a main base of a detergent has been studied as a surfactant having excellent feeling upon use and low irritation.
This alone was not sufficiently satisfactory on a practical level in terms of foaming properties. Therefore, the object of the present invention is to
It is an object of the present invention to provide a detergent composition which is excellent in feeling in use, has low irritation, and has excellent foaming properties.

[0004]

Means for Solving the Problems The present inventors have studied in such a situation, and as a result, it has been found that a detergent composition containing a specific acylated amino acid type surfactant and a specific (monoacylglycerin) monoglyceride has the above object. And accomplished the present invention. That is, the present invention provides a detergent composition containing the following components (A) and (B). (A) The following general formula (I) of the following [Formula 3] (same as [Formula 1])
An acylated amino acid type surfactant represented by the formula:

[0005]

Embedded image R′CONH (CH ₂ ) _n COOM (I) (wherein R′CO represents a linear acyl group having 10 to 16 carbon atoms, n represents a number of 1 to 2, and M represents n = When 1, represents sodium, potassium or alkanol ammonium,
When n = 2, it indicates potassium or alkanol ammonium. (B) General formula (II) of the following [Chemical formula 4] (same as [Chemical formula 2])
(Monoacylglycerin) monoglyceride represented by

[0006]

Embedded image (Wherein one of R ² , R ³ and R ⁴ has 8 to 2 carbon atoms)
4 represents an acyl group, and the remainder represents a hydrogen group. Hereinafter, the cleaning composition of the present invention will be described in detail.

[0007] The acylated amino acid type surfactant, which is the component (A) of the detergent composition of the present invention, has the property of reacting with calcium in tap water to form plate crystals having high lubricity. . In the acylated amino acid-type surfactant, in the general formula (I), the linear acyl group represented by R′CO has 10 to 16 carbon atoms, and particularly preferably 12 to 14 carbon atoms.
And specific examples thereof include a caprinoyl group, a lauroyl group, and a myristoyl group. If the number of carbon atoms exceeds 16, the lubricating properties of the resulting plate-like crystals are undesirably reduced. Further, if the number of carbon atoms is less than 10, foaming decreases, which is not preferable.

In the general formula (I), n is 1 to 2
Indicates the number of The lubricity of the plate-like crystals formed by the reaction between the acylated amino acid-type surfactant and calcium may be determined, for example, by the method of refining dried pork skin (Aloask, manufactured by Antibody Chemical Industry) with a physiological saline solution. The coefficient of static friction of the crystal is determined by measuring the coefficient of static friction, and a coefficient from the time of wetness to the time after drying is lower than that of the blank is evaluated as good.

The above-mentioned acylated amino acid type surfactant is N-type surfactant.
It is very important that the atom-acyl group bonding portion has a secondary amide structure composed of the above-mentioned linear acyl group. That is, when the acyl group constituting the N atom-acyl group bonding portion is branched or when the amide structure is a tertiary amide type, the formation of plate-like crystals is suppressed or the physical properties of the generated crystals are reduced. It is difficult to obtain a favorable feel because of poor tackiness and stickiness.

In the above general formula (I), those in which n is 2 and M is sodium are not preferred when used as a liquid detergent because of their high Kraft point and poor water solubility.
Accordingly, the above-mentioned acylated amino acid type surfactant which is the component (A) of the present invention specifically includes, for example, lauroyl glycine sodium salt, myristoyl-β-alanine triethanolamine salt, lauroyl-β-alanine tri Ethanolamine salts, potassium lauroyl-β-alanine salts, and the like.

The amount of the above-mentioned acylated amino acid type surfactant, which is the component (A) of the present invention, is 5 to 50% by weight (hereinafter referred to as%) in the case of a liquid detergent in the detergent composition of the present invention. ), And 1 in the case of a paste-like detergent.
It is preferably 5 to 70%, and in the case of a solid detergent, it is preferably 40 to 95%. Component (B) of the cleaning composition of the present invention (monoacylglycerin)
In the monoglyceride (hereinafter referred to as monoacylglycerin), in the above general formula (2), R ² , R ³ or R
^The acyl group represented by ⁴ has 8 to 24 carbon atoms, and particularly preferably 8 to 14 carbon atoms. Specific examples of the acyl group include an octanoyl group, a caprinoyl group, a lauroyl group, And a myristoyl group.

Accordingly, examples of the monoacylglycerin which is the component (B) of the detergent composition of the present invention include monooctanoylglycerin, monocaprinoylglycerin, monolauroylglycerin, monomyristoylglycerin and the like. The amount of the monoacylglycerin, which is the component (B) of the cleaning composition of the present invention, is preferably 0.1 to 20%, more preferably 0.1 to 20%, in the cleaning composition of the present invention.
Preferably it is 5 to 10%.

[0013] In the cleaning composition of the present invention,
The compounding ratio (weight ratio) of the acylated amino acid surfactant as the component (A) and the monoacylglycerin as the component (B) is as follows: [(A) component / (B) component] = 100/1 to 1
The ratio is preferably 2/1, particularly preferably 50/1 to 5/1. By further blending a higher fatty acid salt as the component (C) with the detergent composition of the present invention containing the component (A) and the component (B), the foaming properties and foam feel are further improved. A cleaning composition is obtained.

As the higher fatty acid constituting the higher fatty acid salt as the component (C), a higher fatty acid having 8 to 22 carbon atoms is preferable. Specifically, lauric acid, myristic acid,
In addition to single fatty acids such as palmitic acid, isostearic acid and oleic acid, mixed fatty acids such as coconut oil fatty acids and bovine fatty acids can be mentioned. (C) of the cleaning composition of the present invention
As the higher fatty acid salt as a component, a basic salt of the above higher fatty acid is preferable, and specifically, for example, sodium,
Inorganic basic salts such as potassium, ammonium salts, monoethanolamine salts, diethanolamine salts, triethanolamine salts, alkanolamine salts such as 2-amino-2-methylpropanol, 2-amino-2-methylpropanediol, lysine And basic amino acids such as arginine.

The higher fatty acid salt, which is the component (C) of the detergent composition of the present invention, does not necessarily need to be compounded as a fatty acid salt. A salt may be formed. These higher fatty acid salts may be used alone or in combination of two or more. The blending amount of the higher fatty acid salt, which is the component (C), of the detergent composition of the present invention depends on the blending amounts of the components (A) and (B), and the weight ratio is [(C) component] / [(A) Component + (B) component] = 1/20 to 1/2, particularly preferably 1/10 to 1/3.

The detergent composition of the present invention may contain other surfactants such as alkyl sulfate, alkyl sulfonate, polyoxyethylene alkyl sulfate, alkylbenzene sulfonate, N-acyl sarcosine, N-acyl. Anionic surfactants such as -N-methyltaurine salt, alpha olefiso sulfonate, higher fatty acid ester sulfonate, alkyl ether acetate, polyoxyethylene alkyl ether acetate, fatty acid soap, fatty acid amide, polyoxy Nonionic surfactants such as ethylene alkyl ether, sugar ester, sugar ether and sugar amide, imidazoline and betaine based amphoteric surfactants may be blended within a range not to impair the object of the present invention. it can.

Further, as other additives, components commonly used in detergents can be optionally used in combination as long as the object of the present invention is not impaired. For example, humectants such as propylene glycol, sorbitol, glycerin, carboxyvinyl polymer, methylcellulose, ethanol,
Contains viscosity modifiers such as polyoxyethylene glycol distearate and polyoxyethylene sorbitan tristearate, pearlizing agents, fragrances, dyes, ultraviolet absorbers, antioxidants, bactericides, anti-inflammatory agents, preservatives, etc. be able to.

The dosage form of the detergent composition of the present invention as a detergent is preferably in a liquid form, but is not particularly limited, and may be any form such as a liquid form, a paste liquid, a solid form, and a powder form. can do. The cleaning composition of the present invention described in detail above is particularly suitable as a body cleaning agent for skin or hair. For example, it is suitable for face wash, body shampoo, shampoo and the like. However, the cleaning composition of the present invention is not limited to its use.

[0019]

Next, the cleaning composition of the present invention will be described in detail with reference to examples. However, the present invention is not limited to the embodiments described below. [Example 1] A cleaning composition having the composition shown in Tables 1 and 2 below was prepared, and the foaming amount of these cleaning compositions was measured by the following method (method of measuring the foaming amount). The evaluation was based on evaluation criteria. In addition, the usability was evaluated based on the following (method and criteria for evaluating the usability). The results are shown in Tables 1 and 2 below. No. 13
The cleaning compositions Nos. To 15 are comparative products. (Method of measuring foaming amount) For each cleaning composition, 20
A two-fold diluted aqueous solution is prepared, and 100 ml of this solution (liquid temperature 40
° C) into a graduated measuring cylinder. Then
The stirring blade was placed in the above solution, and the volume (ml) of the foam generated 30 seconds after the start of the stirring was measured and defined as the foaming amount. The rotation speed of the stirring blade is 1000 rpm,
Inverted every 5 seconds. Evaluation criteria 基準: Foaming amount 250 ml or more ○: Foaming amount 200 ml or more and less than 250 ml ×; Foaming amount less than 200 ml (Evaluation method and evaluation criteria for feeling of use) And the sensory evaluation at that time was performed. In the evaluation, an average value was calculated according to the following criteria. When the average value was 4.5 or more, it was very good (◎), and when it was 3.5 to 4.4, it was good (○), and 2.5 to
The case of 3.4 was judged as normal (△), and the case of 2.4 or less was judged as bad (×).

(1) Bubble removal during rinsing 5; Bubble removal is good 4; Bubble removal is slightly good 3; Normally 2; Bubble removal is slightly bad 1; Bubble removal is bad (2) Slip during rinsing, (3) ) Slip after rinsing and (4) Slip after drying 5; Slip good 4; Slightly good 3; Normal 2; Slightly bad 1;

[0021]

[Table 1]

[0022]

[Table 2] Example 2 A detergent composition (face wash, body shampoo) having the following composition was prepared. [Blending composition] (% by weight) Lauroyl-β-alanine triethanolamine; 27 monolauroyl glycerin; 3 triethanolamine laurate; 4 triethanolamine myristate; 2 fragrance; 0.5 dibutylhydroxytoluene; 0.2 ethanol 3 Purified water; Balance According to the above [Blending composition], add purified water to
After dissolving the components and cooling, the above components were added to prepare a liquid detergent.

When the body was washed with the obtained detergent composition, it was found that the foaming and foaming were good, and the slidability was good from the time of rinsing to the time of drying, and the feeling of use was excellent. [Example 3] [Blending composition] (wt%) potassium lauroyl-β-alanine; 20 monolauroylglycerin; 2 potassium laurate; 2 potassium myristate; 2 fragrance; 0.5 dibutylhydroxytoluene; 0.3 ethanol; 4 Purified water; Balance According to the above [Blending composition], add purified water to
After dissolving the components and cooling, the above components were added to prepare a liquid detergent composition.

When the body was washed with the obtained detergent composition, it was found that the foaming and foaming were good, and the slidability was good from the time of rinsing to the time of drying, and the feeling of use was excellent.

[0025]

The cleaning composition of the present invention has low irritation, excellent detergency, good foaming, non-greasy, smooth and refreshing feeling.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ identification code FI (C11D 10/02 1:10 3:20 1:04) (58) Investigated field (Int.Cl. ⁶ , DB name) C11D 10/02 A61K 7/075 C11D 3/20

Claims (2)

(57) [Claims] 1. A cleaning composition comprising the following components (A) and (B). (A) An acylated amino acid surfactant represented by the following general formula (I): Embedded image R′CONH (CH ₂ ) _n COOM (I) (wherein R′CO represents a linear acyl group having 10 to 16 carbon atoms, n represents a number of 1 to 2, and M represents n = When 1, represents sodium, potassium or alkanol ammonium,
When n = 2, it indicates potassium or alkanol ammonium. (B) (monoacylglycerin) monoglyceride represented by the following general formula (II) (Wherein one of R ² , R ³ and R ⁴ has 8 to 2 carbon atoms)
4 represents an acyl group, and the remainder represents a hydrogen group. ) 2. The detergent composition according to claim 1, which contains a higher fatty acid salt as the component (C).