JP2920028B2 - 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 having a mild action on the skin and hair, excellent foaming power and detergency, and showing an excellent conditioning effect on hair.

[0002]

2. Description of the Related Art
As surfactants for detergents, anionic surfactants such as alkyl sulfates, polyoxyethylene alkyl ether sulfates and α-olefin sulfonates are widely used. However, these anionic surfactants have the disadvantage that, though varying in degree, they are all poor in skin irritation.

By the way, it is known that N-acyl taurine type anionic surfactants are useful as one component of detergents. However, this surfactant has a strong protein-degrading ability, and cannot be used to obtain a desired low-irritant detergent when used alone (JP-A-59-100199). There is a drawback that the power is insufficient and the foam quality lacks a rich feeling (JP-A-1-178596).

On the other hand, β-alanine-type amphoteric surfactants are useful as one component of detergents, have good detergency and excellent dispersibility of metallic soap (scum), and have low irritation to skin and hair. Is known to be mild (JP-B-53-42041, JP-B-57-39280). However, since the foaming power is insufficient and the foam does not have a rich feeling, it is difficult to use it as a main surfactant of a detergent.

In view of the above circumstances, the present inventors have conducted intensive studies. As a result, a composition containing an N-acyltaurine-type anionic surfactant and a β-alanine-type amphoteric surfactant has an excellent effect. The present invention has been found to be a detergent composition which has foaming power and creamy foam properties, has less skin irritation, and exhibits an excellent conditioning effect on hair.

[0006] That is, an object of the present invention is to provide a detergent composition which has excellent foaming power and creamy foam quality, has less irritating property to the skin, and exhibits an excellent conditioning effect on hair. It is in.

[0007]

The present invention for achieving the above object has the general formula (A)

Embedded image (Where R ₁ represents an alkyl group or alkenyl group having 7 to 19 carbon atoms, R ₂ represents a lower alkyl group having 1 to 3 carbon atoms, and M represents an alkali metal or an organic amine).
An acyltaurine-type anionic surfactant, and a compound represented by the general formula (B):

Embedded image (Where R is a hydrocarbon group having 6 to 18 carbon atoms, m and n are integers m = 0 to 9, n = 1 to 10, m + n = 1 to 10, and M is hydrogen, alkali metal, ammonium or organic And a β-alanine type amphoteric surfactant represented by the formula:

The N-acyltaurine-type anionic surfactant represented by the above general formula (A) used in the present invention includes sodium N-lauroyl-N-methyltaurine and N-myristoyl-N-methyltaurine trisodium. Ethanolamine salts, N-cocoyl-N-ethyltaurine sodium, N-oleoyl-N-propyltaurine sodium, N-palmitoyl-N-methyltaurine potassium and the like can be mentioned.

[0009] The second essential component of the composition of the present invention,
In the β-alanine-type amphoteric surfactant represented by the general formula (B), R is a hydrocarbon group having 6 to 18 carbon atoms, such as octyl, decyl, lauryl, myristyl,
A single alkyl such as palmityl, stearyl, isostearyl, or a mixture thereof, and m is 0
N is an integer of 1 to 10, and m + n is an integer of 1 to 10. M is hydrogen or an alkali metal such as Na or K, or ammonium or triethanolamine. Specifically, N- (2-hydroxydodecyl) -N- (2-hydroxyethyl) -β-alanine sodium salt, N- (2-hydroxydodecyl)-
N- (polyoxyethylene (3EO))-β-alanine sodium salt, N- (2-hydroxyalkyl)-
N- (2-hydroxyethyl) -β-alanine triethanolamine salt (2-hydroxyalkyl group is C ₁₂ , C
₁₄ ) and so on.

The total amount of the components of the general formulas (A) and (B) is
It is about 1 to 30% by weight, more preferably 3 to 20% by weight, based on the total amount of the detergent composition. If the amount is less than 1% by weight, the effect is not exhibited, and if it exceeds 30% by weight, it becomes difficult to obtain a uniform and stable composition. The weight ratio of the compound of the general formula (A) to the compound of the general formula (B) is about 10 /
It is preferable to use it in the range of 1 to 1/10, and if the weight ratio is out of this range, the effect is not sufficiently exhibited.

The cleaning composition of the present invention may contain, in addition to the above essential components, components and additives commonly used in cleaning agents. For example, oily components such as higher fatty acids, higher alcohols, silicones, silicone derivatives, lanolin derivatives and fatty acid esters of polyethylene glycol, nonionic surfactants such as fatty acid alkanolamides, polyoxyethylene alkyl ethers and alkylamine oxides, alkylaminoacetic acids Zwitterionic surfactants such as betaine and acylamidopropylbetaine,
Cationic surfactants such as stearyltrimethylammonium chloride, cationic polymers [Polymer JR
(Manufactured by Union Carbide Corporation), Polycoat NH (manufactured by Henkel), Marcoat 550 (manufactured by Merck), Guffcut 755N (manufactured by GAF), cationized guar gum, methacrylic amphoteric / cationic polymer, etc.), disinfectant, chelating agent , An ultraviolet absorber, a pH adjuster, a dye and a fragrance. The cleaning composition of the present invention is applied to shampoos, body cleaning agents, facial cleansing agents, kitchen detergents, and the like.

[0012]

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 The foaming power was measured according to the Ross Miles test method. However,
The sample was a 2% aqueous solution (using 50 ppm of CaCO ₃ artificial hard water) at a temperature of 40 ° C. ◎: Very good foaming, foaming power of 250 mm or more ○: Good foaming, foaming power of 210 mm or more, 250 mm
Less than △: Foaming is normal, foaming power is 170 mm or more, 210 mm
Less than ×: poor foaming, foaming power less than 170 mm

Fineness (Creamy) of Foam Using a Virusman foam measuring device, the brush was rotated for 1000 rotations for 5 minutes, and then the foam was collected and its viscosity was measured with a B-type viscometer. The sample is a 2% aqueous solution. The finer the foam, the higher the foam viscosity. …: Good foam fineness, foam viscosity of 1500 cps or more ○: Normal foam fineness, foam viscosity of 700 to 1500 c
ps ×: Poor foam fineness, foam viscosity 700 cps or less

Skin Irritation (Protein Denaturation Rate) Test Method The denaturation rate of ovalbumin when a sample was added to an ovalbumin pH7 buffer solution to a sample concentration of 1% using aqueous high performance liquid chromatography was 220 nm. It measured using the absorption peak of. Denaturation rate (%) = (Ho−Hs) / Ho × 100 Ho: height of the 220 nm absorption peak of ovalbumin Hs: 2 when the sample was added to the ovalbumin buffer solution
The criteria for the evaluation of the height of the 20 nm absorption peak were set as follows. ◎: Ovalbumin denaturation rate of less than 30% 白: Ovalbumin denaturation rate of 30% or more and less than 60% △: Ovalbumin denaturation rate of 60% or more and less than 80% ×: Ovalbumin denaturation rate of 80% or more

Easiness of hair after hair washing (conditioning effect) This is an evaluation method based on a sensory test. 5.0 g of the shampoo composition of the sample was placed on the hair, shampooed, rinsed, and then towel-dried. (The panelists are 20 women, and the evaluation score is the average score.) Evaluation 1: When the hair is not easily organized 2; When the hair is not easily organized 3; 4; when the hair is easy to pack 5; when the hair is easy to pack

[0017]

Examples 1 to 5 and Comparative Examples 1 to 5 Shampoos having the composition shown in Tables 1 and 2 were prepared by a usual method, and the effects of each essential component were examined. Tables 1 and 2 show the results.

[0018]

[Table 1]

[0019]

[Table 2]

As is clear from Examples 1 to 5, all the detergents using the components of the present invention showed excellent performance. On the other hand, in Comparative Examples 1 and 2 lacking one of the essential components, sufficient performance cannot be obtained. Also, one of the essential ingredients,
Usually, the combination with the surfactant used in the cleaning agent (Comparative Examples 3 to 5) is inferior in terms of the fineness of the foam, the skin irritation, and the ease of gathering the hair after washing.

[0021]

Example 6 The following shampoo composition was prepared and evaluated by the above method. All items were excellent evaluations as in Examples 1 to 5. (%) In the general formula B, a component in which R is an equal mixture of C ₁₂ and ₁₄ , m = 0, n = 1, and 10 M is sodium (5) N-cocoyl-N-methyltaurine sodium 10 coconut oil Fatty acid diethanolamide 3 Cationized cellulose (Polymer JR400, UCC) 0.3 Appropriate amount of fragrance and pigment Purified water Balance

[0022]

Example 7 The following body shampoo foamed, had excellent foam fineness, and had extremely low skin irritation. (%) In the general formula B, R: C ₁₀ , m = 1, n = 2, 8 M is a component of triethanolamine (6) N-myristoyl-N-methyltaurine triethanolamine salt 12 myristate triamine Ethanolamine salt 4 Propylene glycol 2 Perfume, pigment Suitable amount Purified water Balance

[0023]

As described above, the present invention provides a cleaning composition having excellent foaming power and creamy foam, less skin irritation and excellent conditioning effect on hair. It is obvious to provide.

Claims (1)

(57) [Claims] 1. A compound of the general formula (A) (Where R ₁ represents an alkyl group or alkenyl group having 7 to 19 carbon atoms, R ₂ represents a lower alkyl group having 1 to 3 carbon atoms, and M represents an alkali metal or an organic amine).
An acyltaurine-type anionic surfactant, and a compound represented by the general formula (B): (Where R is a hydrocarbon group having 6 to 18 carbon atoms, m and n are integers m = 0 to 9, n = 1 to 10, m + n = 1 to 10, and M is hydrogen, alkali metal, ammonium or organic A detergent composition comprising a β-alanine type amphoteric surfactant represented by the following formula: