JP3203532B2 - 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, and more particularly, to a detergent composition which has a low irritation to the skin and hair, a high foaming power, a good feeling in use and a high moisturizing effect. Composition.

[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, are used for skin cleansing agents, and hair cleansing agents are used for cleansing hair. Alkyl sulfates and alkyl sulfonates are mainly used.

[0003] However, soaps used for skin cleansing are:
Alkyl sulfates and alkyl sulfonates used for washing hair have an excellent detergency but have a problem in terms of irritation. As a countermeasure for this, 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 usability and a low irritation. In terms of foaming properties, it was not sufficiently satisfactory on a practical level.

[0004] Therefore, there has been a demand for the development of a detergent composition having a high foaming power, a low irritation, a good feeling in use, and a high moisturizing effect.

[0005]

Means for Solving the Problems The present inventors have conducted intensive studies in view of the above circumstances, and as a result, have found that a specific secondary amide type N-acyl amino acid salt and a polyglycerin fatty acid ester are combined and blended. It has been found that a cleaning composition having excellent foaming properties, no irritation to the skin, hair, etc., good foam removal and sliding after washing, good feeling in use, and a high moisturizing effect can be obtained, and completed the present invention. I came to.

That is, the present invention relates to the following components (A) and (B): (A) The following general formula (1) R ¹ CONH (CH ₂ ) _m COOM ¹ (1) (wherein R ¹ CO- Represents an acyl group having 10 to 16 carbon atoms, m represents a number of 1 or 2, and M ¹ represents a sodium atom, a potassium atom or an alkanol ammonium group when m is 1, and a potassium atom or m when m is 2. A secondary amide type N-acyl amino acid salt represented by the following general formula (2):

[0007]

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(Wherein, R ¹ , R ² , R ³ , R ⁴ and R ⁵ are the same or different and represent an acyl group having 8 to 20 carbon atoms, wherein at least one is an acyl group) , N is 4 to 30
Indicates the number of The present invention also provides a detergent composition containing a polyglycerin fatty acid ester represented by the following formula:

The secondary amide type N-acyl amino acid salt of the component (A) used in the present invention has a property of reacting with calcium contained in tap water to form plate-like crystals having high lubricity. Is an effect of imparting a good feeling of use such as slippage after washing to a detergent composition containing the same. Here, the lubricating properties of the plate-like crystals formed by the reaction of the secondary amide type N-acylamino acid salt with calcium can be determined, for example, by regenerating dried pork skin (Aloask, manufactured by Antibody Chemicals, Inc.) with physiological saline. It is determined by measuring the coefficient of static friction of the crystal on the plate on the thing, and the coefficient is lower than that of the blank from the time when it is wet to the time when it is dry.

In the above secondary amide type N-acyl amino acid salt, the acyl group represented by R ¹ CO in the general formula (1) has 10 to 16 carbon atoms, and preferably 12 to 14 carbon atoms. Specifically, a caprinoyl group, a lauroyl group or a myristoyl group is preferred. Within this range, the lubricating properties of the on-plate crystals and foaming during washing are particularly good. Further, the secondary amide type N-acyl amino acid salt has a structure in which the N-acyl group is composed of the linear acyl group.
It is particularly preferred that the compound has a primary amide structure. That is,
When such a structure is employed, the generation of plate-like crystals is easily suppressed, and the generated crystals have excellent lubricity, are less sticky, and have a particularly favorable feel. Alkanol ammonium includes monoethanol ammonium, diethanol ammonium and triethanol ammonium. In the general formula (1), m
Is 2 and M ¹ is sodium, which has a high Krafft point and poor water solubility, and is therefore not preferable when used as a liquid detergent.

The amount of the component (A) to be added to the detergent composition of the present invention is 2 to 40% by weight when it is in a liquid or paste form.
(Hereinafter simply referred to as “%”), particularly 5 to 30
% Is preferred.

The polyglycerol fatty acid ester of the component (B) used in the present invention is a compound of the formula (2) wherein the fatty acid residues R ¹ , R ² , R ³ , R ⁴ or R ⁵ are linear. It is preferably a linear or branched saturated or unsaturated acyl group having 12 to 18 carbon atoms. Preferred specific examples include a lauroyl group, a myristoyl group, a palmitoyl group, a stearoyl group, an isostearyl group, an oleoyl group, and the like. In the general formula (2), n is preferably an integer of 4 to 13.

Preferred specific examples of the polyglycerin fatty acid ester (B) include decaglycerin distearate, decaglycerin triisostearate, decaglycerin diisostearate, decaglycerin dioleate, decaglycerin monooleate, decaglycene monopalmitate, Hexaglycerin stearate and the like can be mentioned. Particularly preferred commercially available products include decaglycerin distearate (Sunsoft Q-182S; manufactured by Taiyo Kagaku Co., Ltd.), decaglycerin monooleate (Sunsoft Q-17S; same), hexaglycerin monostearate (Sunsoft Q -18F; the same).

H of polyglycerin fatty acid ester (B)
LB is preferably 5 or more and less than 16, particularly preferably 7 or less.
To 14 are preferred. Here, the HLB value is the cloud number A (the number of drops of the aqueous phenol solution when 0.5 g of an anhydrous sample is dissolved in 5 ml of 98% ethyl alcohol, and the solution is kept at 25 ° C. and titrated with a 2% aqueous phenol solution while stirring). ) Means the value obtained by the following equation. HLB = cloud number A × 0.89 + 1.11

The amount of the component (B) to be added to the detergent composition of the present invention is preferably 0.5 to 20%, more preferably 1 to 10% when it is in a liquid or paste form.

The detergent composition of the present invention contains other surfactants such as higher fatty acid salts, alkyl sulfates, alkyl sulfonates, polyoxyethylene alkyl sulfates,
Anionic surfactants such as alkyl benzene sulfonate, N-acyl sarcosine salt, N-acyl-N-methyl taurine salt, alpha olefin sulfonate, alkyl ether acetate, polyoxyethylene alkyl ether acetate, polyoxyethylene Nonionic surfactants such as alkyl ethers, sugar esters, sugar ethers and sugar amides, and amphoteric surfactants such as imidazoline and betaine can be optionally used in combination as long as the effects of the present invention are not impaired. .

Furthermore, as other additives, components commonly used in detergents can be optionally used in combination as long as the effects of the present invention are not impaired. For example, humectants such as propylene glycol, sorbitol, glycerin, carboxyvinyl polymer, methylcellulose, ethanol,
Viscosity modifiers such as polyoxyethylene glycol distearate, pearlizing agents, fragrances, dyes, ultraviolet absorbers, antioxidants, bactericides, anti-inflammatory agents, preservatives, and the like can be added.

The detergent composition of the present invention can be prepared by a conventional method and can be in the form of a paste, gel, liquid, solid, etc., but an aqueous system is preferable. % Is preferred. Further, it is suitable as a cleaning agent for the body such as skin or hair, and is particularly preferably used for cleaning the skin.

[0019]

The cleaning composition of the present invention has low irritation to the skin and hair, high foaming power, good foam removal and sliding after washing, and a high moisturizing effect. It has excellent usability and is particularly suitable for skin cleansing.

[0020]

The present invention will be described below in more detail with reference to examples, but the present invention is not limited to these examples.

Example 1 A cleaning composition having the composition shown in Table 1 below was prepared, and the foaming amount of each of these cleaning compositions was measured by the following method, and the feeling of use was evaluated by the following method and criteria. The moisturizing effect was evaluated by the following method. The results are shown in Table 1. In addition, No. The cleaning compositions 7 to 10 are comparative products.

(Measurement of Foaming Amount) For each detergent composition, a 10-fold diluted aqueous solution is prepared, and 100 ml of this solution (liquid temperature of 40 ° C.) is poured into a graduated 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 to determine the foaming amount. The rotation speed of the stirring blade was 1000 rpm, and
Inverted every second.

(Evaluation criteria) ；: Foaming amount 200 ml or more. Δ: Foaming amount less than 200 ml.

(Evaluation of Feeling of Use) With respect to each cleaning composition, panelists of 10 men and women were allowed to clean their bodies, and sensory evaluation 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 break during rinsing] 5: Bubble break is good. 4: Slightly defoamed. 3: Normal. 2: Foaming is somewhat poor. 1; foaming is poor.

[(2) Slip during rinsing, (3) Slip after rinsing, and (4) Slip after drying] 5: Good slip. 4: Slightly good slippage. 3: Normal. 2: Sliding is somewhat poor. 1: Sliding is poor.

(Measurement of moisturizing effect) The inside of the forearm of each panelist was washed with water, and the water was wiped off gently with a towel.
After drying in a constant temperature and humidity room at 0% RH for 20 minutes, the electrical conductivity of the skin was measured using a conductance measuring device (manufactured by IBS Corporation: Sukikon 200). Thereafter, the same site was washed with each of the detergent compositions for 1 minute, and thoroughly washed with water.
The conductance value after minute drying was measured. The conductance ratio before and after washing was calculated by the following equation, and the average value is shown in Table 1 together. The higher the value, the higher the moisturizing effect. Moisturizing effect = Conductance value after cleaning / Conductance value before cleaning

[0028]

[Table 1]

Example 2 (Blending composition) (%) (1) Lauroyl-β-alanine triethanol 25 ammonium salt (2) “Sunsoft Q-182S” 4 (3) Coconut fatty acid triethanol ammonium salt 3 (4) ) Fragrance 0.5 (5) Dibutylhydroxytoluene 0.2 (6) Ethanol 3 (7) Purified water balance

According to the above composition, the above-mentioned (1) is added to heated water.
After the components (3) to (3) were dissolved and cooled, the components (4) to (6) were added to prepare a liquid detergent composition. When the body was washed with the obtained detergent composition, the foaming and foaming were good, the slidability was good from rinsing to drying, and the feeling was moist and excellent in use.

Example 3 (Blending composition) (%) (1) Lauroyl-β-alanine potassium salt 15 (2) “Sunsoft Q-182S” 3 (3) Lauroylamide propyldimethyl carboxybetaine 1 (4) Glycerin 5 (5) Fragrance 0.5 (6) Ethanol 3 (7) Purified water balance

According to the above composition, the above-mentioned (1) is added to heated water.
After the components (3) to (3) were dissolved and cooled, the components (4) to (6) were added to prepare a liquid detergent composition. When the body was washed with the obtained detergent composition, the foaming and foaming were good, the slidability was good from rinsing to drying, and the feeling was moist and excellent in use.

────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-59-182899 (JP, A) JP-A-59-207998 (JP, A) JP-A-5-140590 (JP, A) JP-A-2- 250819 (JP, A) JP-A-1-308498 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) C11D 1/10 C11D 3/20 A61K 7/075 A61K 7/50

Claims (1)

(57) [Claims] [Claim 1] The following components (A) and (B); (A) the following general formula ^{(1) R 1 CONH (CH} 2) m COOM 1 (1) ( wherein, R ¹ CO- is 10 carbon atoms Represents an acyl group of ~ 16, m represents a number of 1 or 2, M ¹ represents a sodium atom, a potassium atom or an alkanol ammonium group when m is 1, and a potassium atom or an alkanol ammonium group when m is 2; (B) a secondary amide type N-acyl amino acid salt represented by the following general formula (2): (Wherein, R ¹ , R ² , R ³ , R ⁴ , and R ⁵ are the same or different and represent a hydrogen atom or an acyl group having 8 to 20 carbon atoms, wherein at least one is an acyl group) , N is 4 to 30
Indicates the number of A detergent composition comprising a polyglycerol fatty acid ester represented by the formula (1):