JPH07188694A - Detergent composition - Google Patents

Abstract

PURPOSE:To obtain a detergent composition excellent in hard water resistance, smoothness in combing the hair with fingers in washing and comfortbleness after washing and equivalent to a conventional product in performances such as foaming properties, duration of foams and separation of foams in rinsing by using a specified N-(N'-(long-chain acyl)alanyl)alanine salt. CONSTITUTION:The title composition contains an N-(N'-(long-chain acyl)alanyl) alanine salt represented by the formula (wherein RCO is an 8-22C linear or branched aliphatic acyl group; and M is an alkali metal, an alkaline earth metal, ammonium, alkylammonium, alkaolamonium or a basic amino acid residue) or contains the N-(N'-(long-chain acyl)alanyl)alanine salt and an N-(long- chain acyl)amino acid salt. This composition is desirably one used for the hair.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a detergent composition,
The present invention relates to a detergent composition having increased foaming power and foam retention, eliminating a squeaky feeling at the time of cleaning, having excellent hard water resistance, and having an excellent feeling of washing up.

[0002]

2. Description of the Related Art Conventionally, detergent compositions mainly containing anionic surfactants such as shampoos, face washing foams and kitchen detergents include higher fatty acid salts, polyoxyethylene alkyl ether sulfates and alkylbenzene sulfonates. Was used. On the other hand, N-acyl acidic amino acid salt, N
-Acyl neutral amino acid salts and the like have come to be used in the above-mentioned cleaning composition because they have a mild action on the skin and hair and excellent detergency, but foaming, squeaking during cleaning, etc. There was a problem in terms of usability.

As a method for solving the problems of these N-acyl amino acid salts, N- (N'-long-chain acylglycyl)
Use of glycine salt or N- (N'-long chain acyl-β-alanyl) -β-alanine salt is disclosed in JP-A-59-84.
It is disclosed in Japanese Patent Application Laid-Open No. 994, Japanese Patent Application Laid-Open No. 59-152999, Japanese Patent Application Laid-Open No. 5-51356, and Japanese Patent Application Laid-Open No. 5-78693. However, although these glycine and β-alanine derivatives improve foaming power and foam breakage at the time of rinsing, they cannot be said to sufficiently improve hard water resistance and squeaky feeling, particularly squeaky feeling at the time of washing hair.

[0004]

DISCLOSURE OF THE INVENTION The object of the present invention is to have foaming ability, retention of foam, and foam breakage during rinsing, which are equivalent to those of conventional ones, and hard water resistance and squeaky feeling during use. It is an object of the present invention to find an improved novel surfactant and to provide a detergent composition using the same.

[0005]

Means for Solving the Problems As a result of intensive studies in view of such circumstances, the present inventors have found that N- (N'-long-chain acylalanyl) alanine salt was conventionally known as N- (N'-acylglycyl). The present invention has found that the glycine salt and N- (N'-long-chain acyl-β-alanyl) -β-alanine salt are superior in hard water resistance and squeaky feeling during use, especially when washing hair. Has been completed.

That is, the present invention relates to a detergent composition containing an N- (N'-long chain acylalanyl) alanine salt represented by the following general formula (I).

[Chemical 2] (In the formula, RCO represents a linear or branched fatty acid acyl group having 8 to 22 carbon atoms, M represents an alkali metal, alkaline earth metal, ammonium, alkylammonium,
Represents an alkanol ammonium or basic amino acid. )

Further, the present invention provides a detergent composition comprising an N- (N'-long chain acylalanyl) alanine salt represented by the general formula (I) and an N-long chain acylamino acid salt. It also includes.

The present invention will be described in detail below. The fatty acid acyl group represented by RCO of the N- (N'-long-chain acylalanyl) alanine salt represented by the general formula (I) is an acyl group derived from a saturated or unsaturated fatty acid having 8 to 22 carbon atoms. Groups, such as capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, linoleic acid, linoleic acid, oleic acid, and other acyl groups with a single composition of fatty acid, coconut oil fatty acid, beef fatty acid It may be an acyl group of a naturally occurring fatty acid (including a branched fatty acid) such as hardened beef tallow fatty acid.

The alkali metals include sodium and potassium, the alkaline earth metals include calcium and magnesium, the alkylammonium includes trimethylammonium and triethylammonium, and the alkanolammonium. Include monoethanolammonium, diethanolammonium, triethanolammonium and the like, and basic amino acids include lysine, arginine,
Ornithine and the like can be mentioned.

N- (N'-represented by the above general formula (I)
The long-chain acylalanyl) alanine is obtained by, for example, dissolving N-alanylalanine in water or a water-organic solvent mixed solvent and then performing an acylation reaction with a fatty acid halide or the like, or by converting the N-long-chain acylalanine to an acid halide. It can be produced by a known method such as reaction with alanine after conversion into

In the detergent composition of the present invention, N- (N '
The amount of the long-chain acylalanyl) alanine salt may be appropriately determined according to the purpose of use, but when used as the main surfactant, it is usually 1 to 90 in the detergent composition.
%, Preferably 5 to 80% by weight, and when used as an additive, 0.1 to 10% by weight, preferably 1 to
It is 5% by weight.

The N- (N'-long-chain acylalanyl) alanine salt, particularly when used in combination with the N-long-chain acyl-amino acid salt, has the disadvantages of the foaming ability and the resistance to foaming, which are the drawbacks of the N-long-chain acyl-amino acid salt. It is possible to obtain a detergent composition having improved hard water properties, squeaky feeling and the like. In this case, N-
The total amount of the (N′-long-chain acylalanyl) alanine salt and the N-long-chain acyl-amino acid salt may be appropriately determined according to the purpose of use, but is usually 1 to 90% in the detergent composition.
%, Preferably 5-80% by weight. The ratio of the N- (N'-long chain acylalanyl) alanine salt to the N-long chain acyl-amino acid salt is 0.5 / 99.5 or more, preferably 2/98 to 90/10. 0.5
If it is less than 99.5, the effect of adding the N- (N'-long chain acylalanyl) alanine salt is not sufficient, and a satisfactory feeling of use cannot be obtained.

The detergent composition of the present invention can be used for applications such as kitchen detergents, shampoos, facial cleansers and body cleaners according to the purpose, and is particularly suitable for shampoos.
Further, to the present cleaning composition, a commonly used fragrance, colorant, humectant, builder, preservative and the like can be appropriately added.

Further, there is no problem in using other anionic surfactants, cationic surfactants, amphoteric surfactants and nonionic surfactants together for controlling foaming and detergency. These include fatty acid soap, higher alcohol sulfate, polyoxyethylene higher alcohol sulfate, higher alcohol phosphate ester salt, sulfonated higher fatty acid salt, sulfonated higher fatty acid alcohol ester salt, isethionic acid higher fatty acid ester salt, Anionic surfactants such as N-long-chain acylamino acid salts, cationic surfactants such as higher alkyl trimethyl ammonium salts, di higher alkyl dimethyl ammonium salts, higher alkyl dimethyl benzyl ammonium salts, higher alkyl dimethyl acetate betaines, higher fatty acid amide propyl Examples include amphoteric surfactants such as betaine and imidazolinium type betaine, nonionic surfactants such as higher fatty acid diethanolamide, higher fatty acid monoethanolamide, and alkyl glucoside. No.

The detergent composition of the present invention can be produced by a conventional method. Further, the dosage form as a cleaning agent is not particularly limited, and liquid, paste, gel, solid,
It can be in any dosage form such as powder.

[0016]

EXAMPLES Next, the present invention will be described in more detail by way of examples.

Example 1 The detergent compositions shown in Table 1 were evaluated for foaming power, foam retention, hard water resistance, and squeaky feeling when washing hair.

Evaluation Method The foaming power and the retention of foam were evaluated by diluting the cleaning composition of each formulation 20 times and stirring with a mixer for 5 seconds, and the foam amount after 1 minute and after 10 minutes. The amount of foam was measured.

The sensory evaluation was carried out by having 15 men and women of each composition wash their hairs, and each sensory evaluation was made according to the evaluation criteria shown below, and each evaluation value was averaged to 4.5.
The above is ◎, 3.5 to 4.4 is ◯, 2.5 to 3.4 is Δ,
A value of 2.4 or less was marked with x.

Squeaking during washing and squeaking during rinsing 5: No squeaking is felt at all 4: Slightly squeaking is felt 3: Normal 2: Fingers are slightly caught on hair 1: Fingers do not pass through Bubble amount 5: Large 4: Moderately high 3: Normal 2: Moderately low 1: Low

[0021]

[Table 1]

From the results shown in Table 1, it can be seen that the detergent composition of the present invention has good foam stability and reduces squeaking during washing and rinsing.

Example 2 In order to compare the hard water resistance, the cleaning composition shown in Table 2 was prepared, and the foaming power and the foam retention were evaluated by the same method as in Example 1.

[0024]

[Table 2]

From the results shown in Table 2, it can be seen that the detergent composition of the present invention has excellent hard water resistance.

Example 3 A cleaning composition (hair shampoo) shown in Table 3 was prepared,
Sensory evaluation was performed.

[0027]

[Table 3]

From the results shown in Table 3, it can be seen that the detergent composition of the present invention is excellent in foaming power and has no squeak during cleaning and rinsing.

Example 4 A cleaning composition (body shampoo) shown in Table 4 was prepared. This body shampoo had neither the slimy feeling nor the squeaky feeling peculiar to the N-acyl amino acid salt, and was excellent in the feeling of use.

[0030]

[Table 4]

[0031]

The cleaning composition of the present invention has excellent foaming power and foam retention, improved hard water resistance and improved squeaky feeling during use, and is particularly suitable for cleaning hair. .

Claims (3)

[Claims] 1. N- (N'-represented by the following general formula (I):
A detergent composition comprising a long-chain acylalanyl) alanine salt. [Chemical 1] (In the formula, RCO represents a linear or branched fatty acid acyl group having 8 to 22 carbon atoms, M represents an alkali metal, alkaline earth metal, ammonium, alkylammonium,
Represents an alkanol ammonium or basic amino acid. ) 2. N- (N 'represented by the general formula (I).
A long-chain acylalanyl) alanine salt and an N-long-chain acylamino acid salt. 3. The cleaning composition according to claim 1, which is for hair.