JPH0656636A - Shampoo composition - Google Patents

Abstract

PURPOSE:To provide a shampoo composition having excellent frothing power to give creamy foam, giving little irritation to the skin and exhibiting excellent conditioning effect on hair. CONSTITUTION:This shampoo composition contains (A) a beta-alanine-type amphoteric surfactant of formula I (R is 6-18C hydrocarbon group; (m) is 0-9; (n) is 1-10; m+n is 1-10; M is H, alkali metal, ammonium or organic amine group), e.g. N-(2-hydroxydodecyl)-N-(2-hydroxyethyl)-beta-alanine sodium salt, (B) an N-acyl neutral amino acid salt of formula II (R is 7-19C alkyl or alkenyl; (n) is 1 or 2; M is alkali metal, ammonium or organic amine group), e.g. N-lauroyl-N- methyl-beta-alanine sodium salt and (C) a cationic polymer such as cationized cellulose derivative at a weight ratio (A/B) of 5/1 to 1/5. The contents of A+B and C in the composition are 5-20wt.% and 0.1-2wt.%, respectively.

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 and the like, has a mild action on the skin and hair, has no squeaks when the hair is wet, and has a dry hair quality. The present invention relates to a shampoo composition having a good cohesiveness and an excellent conditioning effect.

[0002]

2. Description of the Related Art Conventionally, the problems to be solved by the invention
Anionic surfactants such as alkyl sulfate ester salts, polyoxyethylene alkyl ether sulfate salts, and α-olefin sulfonates are widely used as detergent surfactants. However, all of these anionic surfactants have the disadvantage that they are inferior in skin irritation to some extent.

By the way, the β-alanine type amphoteric surfactant is useful as one component of a detergent, has excellent detergency and dispersibility of metallic soap (scum), and is mild to skin and hair. It is known to be mild (Japanese Examined Patent Publication No. 53-42041, Japanese Examined Patent Publication No. 57-3928).
0). However, it is difficult to use it as a main surfactant of a cleaning agent because it lacks a foaming power and lacks a rich feeling of foam quality.

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

Further, it is generally known that a cationic polymer is added to a shampoo composition to give a conditioning effect, but when an amount which exerts the effect is added, unpleasant slimyness during the drying process and There is a problem that the hair becomes stiff after drying.

In view of the above circumstances, the present inventor has conducted diligent research and, as a result, has found that a composition containing a β-alanine type amphoteric surfactant, an N-acyl neutral amino acid salt and a cationic polymer has excellent foaming properties. The present invention found that it is a shampoo composition that has strength and creamy foam quality, acts mildly on the skin and hair, does not stiffen the hair after drying, and has an excellent conditioning effect with good cohesion. Came to.

That is, an object of the present invention is to provide a shampoo composition which has an excellent foaming power and a creamy foam quality, acts mildly on the skin and hair, and shows an excellent conditioning effect on the hair. To provide.

[0008]

Means for Solving the Problems The present invention which achieves the above object comprises (a) a general formula (A)

[Chemical 3] (Here, 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 (b) the general formula (B).

[Chemical 4] (Wherein R represents an alkyl group or an 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). And (c) one or more cationic polymers are contained in the shampoo composition.

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. , A single alkyl such as palmityl, stearyl, isostearyl or a mixture thereof, m is an integer of 0-9, n is an integer of 1-10, and m + n is an integer of 1-10,
Examples of M include hydrogen, alkali metals such as Na and K, ammonium, and 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.

Is the second essential ingredient of the composition of the present invention,
Examples of the N-acyl neutral amino acid salt represented by the general formula (B) include N-lauroyl-N-methyl-β-alanine sodium, N-myristoyl-N-methyl-β-alanine sodium, N-cocoyl-N. -Methyl-β-alanine triethanolamine, N-lauroyl sarcosine sodium, N-myristoyl sarcosine triethanolamine and the like can be mentioned.

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

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

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

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

As a polydimethyldiallylammonium salt type polymer, there is polydimethylmethylene piperidinium chloride (trade name; Marcoat 100, manufactured by Merck).

Examples of the quaternized polyvinylpyrrolidone derivative include vinylpyrrolidone / N, N-dimethylaminoethylmethacrylic acid copolymer diethylsulfate (trade name; Gaffcut 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).

As the methacrylic amphoteric / cationic polymer, N-methacryloylethyl-N, N-dimethylammonium.alpha.-N-carboxybetaine, N-methacryloyl-N, N, N-trimethylammonium chloride and 2-hydroxy are used. Examples thereof include ethyl methacrylate copolymer (trade name; plus size L-450, manufactured by Gosho 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, and more preferably 5 to 20% by weight, based on the total amount of the shampoo composition. The weight of the compound of general formula (A) to the compound of general formula (B) is about 10 /
It can be arbitrarily selected in the range of 1 to 1/10, but especially 5/1
It is preferably in the range of 1/5.

The amount of the cationic polymer blended is 0.01 to 5% by weight, preferably 0.1 to 2% by weight in the shampoo composition.
% By weight. If the content of the component (c) is less than 0.01% by weight, the conditioning effect will not be exhibited, while if it exceeds 5% by weight, the hair after drying becomes stiff and the cohesion becomes poor.

In addition to the above-mentioned essential components, the shampoo composition of the present invention may contain components and additives that are commonly used in shampoos. 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 propylbetaine, cationic surfactants such as stearyltrimethylammonium chloride, antidandruff agents such as zinc pyrithione and octopirox, fungicides such as triclosan and trichlorocarban, chelating agents, UV absorbers, A pH adjusting agent such as citric acid, a dye and a fragrance may be included.

[0023]

The present invention will be described in more detail with reference to examples. The effect was measured by the following evaluation method.

Foaming Foaming power was measured according to the loss miles test method. However,
The sample is a 2% aqueous solution (using CaCO ₃ 50 ppm 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 (Creamyness) of Bubbles A virusman bubble measuring device was used to rotate the brush for 1000 rotations for 5 minutes, then the bubbles were sampled, and the viscosity thereof 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 1500 cps or more ○ ... Foam fineness is normal, foam viscosity 700-1500 c
ps x ... Poor foam fineness, foam viscosity 700 cps or less

Skin Irritation (Protein Denaturation Rate) Test Method The ovalbumin denaturation rate when the sample was added to an ovalbumin pH7 buffer solution at a test concentration of 1% using an aqueous high performance liquid chromatography was 220 nm. It measured using the absorption peak of. Denaturation rate (%) = (Ho-Hs) / Ho × 100 Ho: height of 220 nm absorption peak of ovalbumin Hs: 2 when sample is added to ovalbumin buffer solution
The height evaluation standard for the 20 nm absorption peak was 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% ×: Ovalbumin denaturation rate of 80% or more

Squeaky feeling of hair after rinsing (conditioning effect) It is an evaluation method by a sensory test. 5.0 g of the sample shampoo composition was applied to the hair, shampooed, rinsed, and then the squeaky feeling in the wet state of the hair was evaluated by the following rating. (The panelists are 20 women, and the evaluation score is the average score.) Score 1; Strong squeak and no smoothness. 2; slightly squeaky and slightly poor in smoothness. 3; Normal squeak and smoothness. 4; Squeak is weak and smoothness is good. 5; No squeaking, smooth and very good.

Ease of putting together hair after washing (conditioning effect) This is an evaluation method by a sensory test. 5.0 g of the sample shampoo composition was applied to hair, shampooed, rinsed, and towel-dried. (The number of panelists is 20 women, and the evaluation score is the average score.) Score 1; When the easiness of collecting hair is very bad 2; 〃 When it is bad 3; When the ease of collecting hair is normal 4; 〃 good case 5; 〃 very good case

Examples 1 to 8 and Comparative Examples 1 to 5 Shampoos having the compounding compositions shown in Tables 1 and 2 were prepared by a usual method, and the effect of each essential component was examined, and the results are shown in Tables 1 and 2. .

[0030]

[Table 1]

[0031]

[Table 2]

As is clear from Examples 1 to 8, shampoos using the components of the present invention all showed excellent performance. On the other hand, Comparative Examples 1 to 1 lacking one of the essential components
In No. 5, sufficient performance cannot be obtained.

Example 9 A shampoo composition shown below was prepared and evaluated by the above method. All items were evaluated as excellent as in Examples 1 to 8.

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

Example 10 A shampoo composition shown below was prepared and evaluated by the above method. It was less irritating and had a good hair conditioning effect.

(%) In the general formula A, R: C ₁₀ , m = 1, n = 2, M is trieta 10 anolamine Component (5) N-cocoyl sarcosine sodium 8 cationic polymer 3 (polycoat NH, Henkel) Stearyltrimethylammonium chloride 1 Lauric acid diethanolamide 3 Perfume, pH adjuster (adjusted to pH 6-6.5) Appropriate amount Purified water balance

[0037]

Industrial Applicability As described above, the present invention provides a shampoo composition having excellent foaming power and creamy foam quality, less skin irritation, and excellent conditioning effect on hair. It is clear to do.

Claims (1)

[Claims] 1. (a) General formula (A): (Here, 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. An amine) and a β-alanine type amphoteric surfactant represented by the formula (b) and a general formula (B): (Wherein R represents an alkyl group or an 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). And (c) one or more cationic polymers, which is a shampoo composition.