JP3133504B2 - Shampoo composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is excellent in foaming power, detergency, etc., has a mild action on the skin and hair, has no squeak when the hair is wet, and has a dry hair. The present invention relates to a shampoo composition exhibiting a good cohesive and excellent conditioning effect.

[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.

[0003] By the way, 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-57-3928).
0). 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.

On the other hand, N-acyl neutral amino acid salts are also
Known as a mild surfactant for the skin,
It has poor foaming properties and thickening properties, and is rarely used as a main surfactant in detergents.

It is generally known that a cationic polymer is added to a shampoo composition to impart a conditioning effect. However, when an amount that exerts the effect is added, unpleasant sliminess and dryness may occur during the drying process. There is a problem that the hair becomes stiff after drying.

In view of the above circumstances, the present inventors have conducted intensive studies and have found that a composition containing a β-alanine amphoteric surfactant, an N-acyl neutral amino acid salt and a cationic polymer has excellent foaming properties. The present invention has been found to be a shampoo composition having power and creamy foam, acting mildly on the skin and hair, showing no stiffness of the hair after drying, and showing a good cohesive and excellent conditioning effect. Reached.

[0007] That is, an object of the present invention is to provide a shampoo composition having excellent foaming power and creamy foam properties, acting mildly on the skin and hair, and exhibiting an excellent conditioning effect on hair. To provide.

[0008]

The present invention which achieves the above object comprises the following: (a) a compound represented by the following general formula (A):

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

Embedded image (Where R ′ is an alkyl group or alkenyl group having 7 to 19 carbon atoms, n represents an integer of 1 or 2, and M ′ represents an alkali metal, ammonium or an organic amine). A shampoo composition comprising an amino acid salt and (c) one or more cationic polymers.

In the β-alanine type amphoteric surfactant represented by the above general formula (A) used in the present invention, R is a hydrocarbon group having 6 to 18 carbon atoms, for example, octyl, decyl, lauryl, myristyl. , Palmityl, stearyl, isostearyl and the like, or a mixture thereof, m is an integer of 0 to 9, 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 groups are C ₁₂ and C ₁₄ )
and so on.

[0011] The second essential component of the composition of the present invention,
Examples of the N-acyl neutral amino acid salt represented by the general formula (B) include sodium N-lauroyl-N-methyl-β-alanine, N-myristoyl-N-methyl-β-alanine sodium, and N-cocoyl-N. -Methyl-β-alanine triethanolamine, N-lauroyl sarcosine sodium, N-myristoyl sarcosine triethanolamine and the like.

The cationic polymer which is the component (c) of the present invention includes a cationized cellulose derivative, a cationized guar gum, a diallyl quaternary ammonium salt / acrylamide copolymer, a polydimethyldiallylammonium salt type polymer, and a quaternized polyvinyl. Examples include pyrrolidone derivatives, polyglycol polyamine condensates, and methacrylic amphoteric / cationic polymers.

As the cationized cellulose derivative, hydroxyethylcellulose hydroxypropyltrimethylammonium chloride ether (trade name; polymer J
R400, manufactured by Union Carbide Co., Ltd.), hydroxyethylcellulose dimethyldiallylammonium chloride (trade names; Cellcoat H100, Cellcoat L200,
National Starch).

As the cationized guar gum, guar hydroxypropyltrimethylammonium chloride (trade name: Jaguar C-13S, Rhone-Pou)
lenc).

As the diallyl quaternary ammonium salt / acrylamide copolymer, dimethyldiallylammonium chloride / acrylamide copolymer (trade name; Mercoat 5)
50, manufactured by Merck).

As the polydimethyldiallylammonium salt type polymer, there is polydimethylmethylenepiperidinium chloride (trade name; Mercoat 100, manufactured by Merck).

Examples of the quaternized polyvinylpyrrolidone derivative include vinylpyrrolidone / N, N-dimethylaminoethyl methacrylic acid copolymer diethyl sulfate (trade name: Guffcut 755N, manufactured by GAF).

Examples of the polyglycol polyamine condensate include polyethylene glycol / epichlorohydrin / coconut oil alkylamine / dipropylenetriamine condensate (trade name: Polycoat NH, manufactured by Henkel Co.).

Examples of the methacrylic amphoteric / cationic polymer include N-methacryloylethyl-N, N-dimethylammonium α-N-carboxybetaine, N-methacryloyl-N, N, N-trimethylammonium chloride, and 2-hydroxy Ethyl methacrylate copolymer (trade name; Plus Size L-450, manufactured by Ryo Chemical Industry Co., Ltd.).

The total amount of the components of the general formulas (A) and (B) is
It is about 3 to 30% by weight, more preferably 5 to 20% by weight, based on the total amount of the shampoo composition. The weight of the compound of the general formula (A) relative to the compound of the general formula (B) is about 10 /
It can be arbitrarily selected in the range of 1 to 1/10, and particularly,
It is preferably in the range of １ ／ to １ ／.

The amount of the cationic polymer is 0.01 to 5% by weight, preferably 0.1 to 2% by weight in the shampoo composition.
% By weight. If the amount of the component (c) is less than 0.01% by weight, the conditioning effect is not exhibited. On the other hand, if the amount exceeds 5% by weight, the hair after drying becomes stiff and uncoordinated.

The shampoo composition of the present invention may contain, in addition to the above essential components, components and additives commonly used in shampoos. For example, higher fatty acids,
Oily components such as 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 acid betaines, acylamides Zwitterionic surfactants such as propyl betaine, cationic surfactants such as stearyltrimethylammonium chloride, anti-dandruff agents such as zinc pyrithione and octopirox, bactericides such as triclosan and trichlorocarban, chelating agents, ultraviolet absorbers, It may contain a pH adjuster such as citric acid, a dye, a fragrance, and the like.

[0023]

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

Foam Fineness (Creamy) Using a Virusman foam measuring device, the brush was rotated at 1000 rpm 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

Test Method for Skin Irritation (Protein Denaturation Rate) The denaturation rate of ovalbumin when a sample was added to an ovalbumin pH7 buffer solution at a test 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% Δ: Ovalbumin denaturation rate of 60% or more and less than 80% ×: Ovalbumin denaturation rate of 80% or more

The feeling of squeaking of hair after rinsing (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 the squeaky feeling in a wet state of the hair was determined by the following score. (The panelists are 20 women, and the evaluation score is the average score.) Rating 1: The creaking is strong and there is no smoothness. 2: The creaking is slightly strong and the smoothness is slightly poor. 3: Normal creaking and smoothness. 4: The creaking is weak and the smoothness is good. 5: Smooth and very good without creaking.

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.) Rating 1; Very poor hair simplicity 2; 〃 Poor 3; Normal hair simplicity 4;場合 good 5 〃 very good

Examples 1 to 8 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. The results are shown in Tables 1 and 2. .

[0030]

[Table 1]

[0031]

[Table 2]

As is clear from Examples 1 to 8, all the shampoos using the components of the present invention showed excellent performance. On the other hand, Comparative Examples 1 and 2 lacking one of the essential components
In the case of 5, sufficient performance cannot be obtained.

Example 9 The following shampoo composition was prepared and evaluated by the above method. All items were excellent evaluations as in Examples 1 to 8.

(%) In the general formula A, R: C ₁₂ , m = 0, n = 1, and M is sodium 8 (4) sodium N-lauroyl-N-methyl-β-alanine 10 guarhydroxy Propyltrimethylammonium chloride 0.5 (Jaguar C-13S, manufactured by Rhone-Poulenc) Coconut oil fatty acid diethanolamide 3 Hydrolyzed silk 0.2 Flavor, pH adjuster (adjusted to pH 6-7) Appropriate amount Purified water balance

Example 10 The following shampoo composition was prepared and evaluated by the above method. It was less irritating and had a good conditioning effect on hair.

(%) In the general formula A, R: C ₁₀ , m = 1, n = 2, and M is triethanol 10-noramine. Component (5) N-cocoylsarcosine sodium 8 Cationic polymer 3 (Polycoat NH, Henkel) Stearyltrimethylammonium chloride 1 Diethanolamide laurate 3 Perfume, pH adjuster (adjusted to pH 6 to 6.5) Appropriate amount Purified water Balance

[0037]

As described above, the present invention provides a shampoo composition which has excellent foaming power and creamy foam properties, has little skin irritation, and also has an excellent conditioning effect on hair. It is clear that.

Claims (1)

(57) [Claims] (A) General formula (A) (Where R is a hydrocarbon group having 6-18 carbon atoms, m and n are integers, m = 0-9, n = 1-10, m + n = 1-10, and M is hydrogen, alkali metal, ammonium or organic A) an amphoteric surfactant of the β-alanine type represented by the general formula (B): (Where R ′ is an alkyl group or alkenyl group having 7 to 19 carbon atoms, n represents an integer of 1 or 2, and M ′ represents an alkali metal, ammonium or an organic amine). A shampoo composition comprising an amino acid salt and (c) one or more cationic polymers.