JP2634458B2 - Detergent composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is a detergent composition having high safety, mild action on skin and hair, and excellent foaming and detergency. About.

[Problems to be solved by conventional technology and invention]

Conventionally, anionic surfactants such as alkyl sulfates, polyoxyethylene alkyl ether sulfates, and α-olefin sulfonates have been widely used as surfactants for detergents. However, these anionic surfactants have poor skin irritation and are not satisfactory.

On the other hand, the N-polyoxyethylene fatty acid amide sulfate salt of the component (A) is disclosed in JP-A-56-104999, but is not limited to N-polyoxyethylene fatty acid amide and lauric acid or diethanolamide of coconut oil fatty acid. The combination is not satisfactory for safety.

Further, the N-acyl-N-methyl-β-alanine salt of the component (B) is known as an irritating and mild surfactant, but generally has a drawback of poor foaming power and detergency.

An object of the present invention is to provide a detergent composition which is highly safe, has a mild action on skin and hair, and has excellent foaming and detergency.

[Means for solving the problem]

The present invention provides a detergent containing an N-polyoxyethylene fatty acid amide sulfate represented by the following general formula (A) and an N-acyl-N-methyl-β-alanine salt represented by the following general formula (B). A composition.

General formula (A): (In the formula, R represents an alkyl group or alkenyl group having 7 to 17 carbon atoms, M represents an alkali metal or an alkanolamine, and n represents a number of 2 to 5.) General formula (B): (In the formula, R represents an alkyl group or alkenyl group having 7 to 17 carbon atoms, and M represents an alkali metal or an alkanolamine.) N-polyoxyethylene fatty acid amide sulfate represented by the general formula (A) used in the present invention. As ester salts, polyoxyethylene (4E.O.) coconut oil fatty acid amide ether sodium sulfate, polyoxyethylene (4E.O.) coconut oil fatty acid amide ether triethanolamine sulfate,
Polyoxyethylene (4E.O.) Lauric acid amide ether triethanolamine sulfate, polyoxyethylene (4
EO) sodium laurate amide ether sulfate.

As the N-acyl-N-methyl-β-alanine salt represented by the general formula (B), which is the second essential component of the composition of the present invention, N-lauroyl-N-methyl-β-alanine sodium, N -Cocoyl-N-methyl-β-alanine triethanolamine, N-myristyl-N-methyl-
β-alanine triethanolamine and the like.

The total amount of the general formulas (A) and (B) is preferably about 3 to 30% by weight, more preferably 5 to 25% by weight of the total amount of the detergent composition.
% By weight. If it is less than about 3% by weight, sufficient foaming and detergency cannot be obtained, and if it exceeds about 30% by weight, it is difficult to obtain a uniform and complete composition. (A) /
The weight ratio of (B) is preferably used in the range of 0.25 to 10. If the weight ratio is out of this range, the foaming power and detergency are insufficient, and high safety is not exhibited.

The cleaning composition of the present invention can contain components and additives commonly used in cleaning agents in addition to the above essential components. For example, oily components such as higher alcohols, silicone oils, lanolin derivatives, protein derivatives, fatty acid esters of polyethylene glycol, etc., nonionic surfactants such as fatty acid alkalolamide, polyoxyethylene alkyl ether and alkylamine oxide, alkylamide Amphoteric surfactants such as propylbetaine, water-soluble polymers such as hydroxypropylmethylcellulose and hydroxyethylcellulose, and cationic polymers [polymer
JR (manufactured by Union Carbide Corporation), Polycoat NH (manufactured by Henkel), Marcoat 550 (manufactured by Merck), Guffcut 755N (manufactured by GAF), etc., fungicides, chelating agents, ultraviolet absorbers, pH adjusters, dyes And fragrances and the like.

The cleaning composition of the present invention comprises a shampoo, a body cleaning agent,
Applied to facial cleansers, etc.

〔Example〕

Next, the present invention will be described in more detail by way of examples. The effect was measured according to the following evaluation method.

(Foaming test method) The foaming power was measured according to the Ross Miles test method. However, the sample was a 2% aqueous solution (using 50 ppm CaCO ₃ artificial water) and the temperature was 40 ° C.

◎: Excellent foaming, foaming power of 250 mm or more ○: Good foaming, foaming power of 210 mm or more, less than 250 mm △: Normal foaming, foaming power of 170 mm, less than 210 mm ×: Poor foaming, foaming power of 170 mm Less than (cleanability test method) 0.4 ml of chloroform solution of 7% of lanolin and 0.005% of sudan III is uniformly applied to 5 cm x 5 cm of wool muslin cloth, dried, and the contaminated cloth is filled with 40 ml of 3% detergent solution. Was placed in a glass cylinder of about 100 ml, shaken in a constant temperature bath at 40 ° C. for 15 minutes, the contaminated cloth was thoroughly rinsed in running water, dried, and the reflectance was examined.

The evaluation criteria were set as follows.

◎: Excellent cleaning performance Cleaning efficiency 85% or more ○: Good cleaning performance Cleaning efficiency 70% or more and less than 85% △: Normal cleaning performance 55% or more and less than 70% ×: Poor cleaning performance Cleaning efficiency less than 55% (safety test Method) Skin irritation (protein denaturation rate) test method Using an aqueous high-performance liquid chromatography and adding a sample to an ovalbumin pH7 buffer solution so that the sample concentration is 1%, the ovalbumin denaturation rate is 220 nm. It was measured using the absorption peak.

H ₀ : Height of the 220 nm absorption peak of ovalbumin H _S : Height of the 220 nm absorption peak when the sample was added to the ovalbumin buffer solution The criteria for evaluation were set as follows.

◎: Ovalbumin denaturation rate of less than 30% ○: Ovalbumin denaturation rate of 30% or more and less than 60% △: Ovalbumin denaturation rate of 60% or more and less than 80% ×: Egg albumin denaturation rate of 80% or more Hand roughness test method Using a panel of 5 people each, 10 people in total, one of the left and right hands, sample concentration 5%, temperature 35 ℃
The operation of immersing the other hand in water of the same temperature for 10 minutes twice a day for two consecutive days was performed, and the difference in the skin roughness of the left and right hands was visually determined.

◎: Extremely weak hand roughening 0 to 1 out of 10 hand roughening was observed on the sample side ○: Somewhat rough hand roughening 2 to 4 out of 10 hand roughening was observed on the sample side △: 10 rough hand roughening Medium 5 to 7: Hand roughening was observed on the sample side. X: Extremely strong hand roughening 8 to 10 out of 10 Hand roughening was observed on the sample side. Examples 1 to 5, Comparative Examples 1 to 6 The shampoo of the composition was adjusted by a usual method, and the effect of each essential component was examined. The results are shown in Table 1.

(Characteristics) As is clear from Examples 1 to 5, all the detergents using the components of the present invention exhibited excellent performance.

On the other hand, Comparative Examples 1 and 2 lacking one of the essential components were insufficient in all respects. Also, a combination of one of the essential components with a surfactant which is usually used in a detergent and has excellent foaming and detergency (Comparative Examples 3 to 5) and JP-A-56-56
The combination described in -104999 (Comparative Example 6) was inferior in terms of skin irritation and hand roughness, and could not achieve the object of the present invention.

Example 6 A shampoo for hair having the following composition was prepared and evaluated by the above method.

Composition (% by weight) Sodium polyoxyethylene (4E.O.) coconut oil fatty acid amide ether sulfate 15.0 Sodium N-lauroyl-N-methyl-β-alanine 3.0 Coconut oil fatty acid diethanolamide 3.0 Polymer JR-400 (Union Carbide 0.3 Dyes, perfume Appropriate amount Purified water Residue This shampoo for hair foamed, had excellent detergency, and had little irritation to the skin.

Example 7 A body shampoo having the following composition was prepared,
The evaluation was performed by the above method.

Composition (% by weight) Polyoxyethylene (4E.O.) lauric acid amide ether triethanolamine sulfate 14.0 N-myristyl-N-methyl-β-alanine triethanolamine 5.0 lauric acid amide propyl betaine 2.0 myristinic acid triethanolamine 2.0 Dyes and fragrances Appropriate amount Purified water Residue This body shampoo foamed, had excellent detergency, and had little skin irritation.

[Effects of the Invention] As described above, the present invention has high safety, has a mild action on skin and hair, and has excellent foaming power.
Obviously, there is provided a cleaning composition having detergency.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location C11D 1:29)

Claims (1)

(57) [Claims] 1. A washing comprising an N-polyoxyethylene fatty acid amide sulfate represented by the following general formula (A) and an N-acyl-N-methyl-β-alanine salt represented by the following general formula (B): Composition. General formula (A): (In the formula, R represents an alkyl group or alkenyl group having 7 to 17 carbon atoms, M represents an alkali metal or an alkanolamine, and n represents a number of 2 to 5.) General formula (B): (In the formula, R represents an alkyl group or alkenyl group having 7 to 17 carbon atoms, and M represents an alkali metal or alkanolamine.)