JPH06157253A - Shampoo composition - Google Patents

Abstract

PURPOSE:To obtain a shampoo composition, comprising a highly water absorbing resin and an amphoteric surfactant and excellent in shampooing and foaming properties, usability, etc. CONSTITUTION:This shampoo composition is obtained by including 0.1-10wt.% highly water absorbing resin and 3-20wt.% amphoteric surfactant an active ingredients therein and further an ether carboxylate type anionic surfactant and a dispersion stabilizer selected from monosaccharides, oligosaccharides, polysaccharides, modified substances thereof and inorganic substances therein. The highly water absorbing resin can be obtained by polymerizing, e.g. starch or cellulose with a monomer selected from water-soluble monomers having carboxyl or sulfonic acid group and monomers soluble in water by hydrolysis and a cross-linking agent as essential components. The shampoo composition is capable of retaining moisture in the hair of head after washing the hair and skin, etc., and imparting wettability, tenseness and softness with hardly any irritancy to the skin and excellent in preventing effects on hand roughening of operators engaged in washing the hair due to properties of preventing permeation to the skin and moderate water retaining properties and has uniform appearance and high merchandise value.

Description

Detailed Description of the Invention

[0001]

This invention relates to shampoo compositions. More specifically, it retains water on the hair and skin after washing the hair to give wettability, firmness and flexibility,
The present invention relates to a shampoo composition having a low skin irritation, an excellent effect of preventing a hand washing worker from being rough, and a uniform appearance.

[0002]

The important purpose of shampoos is to cleanse the scalp and dandruff, which are stains on the scalp and hair, the stains adhering from the outside, and the hair styling products used, due to the surfactant activity of the surfactants. That is. Due to the strong detergency of these surfactants, the hair and scalp are strongly degreased and lose their luster and suppleness and tend to become dry. Furthermore, in hairdressing salons and barber shops, hair washing operations are routinely performed, and the skin of fingers and hands of hair washing workers are strongly degreased, causing rough hands. In order to overcome these problems, there is a method in which hair, skin, and the like are allowed to retain water so as to have wettability, firmness, and flexibility. Conventionally, hyaluronic acid (Japanese Patent Laid-Open No. 57-212300) and mucopolysaccharide are used as moisturizing agents in order to retain moisture on the hair or skin after washing hair, to impart wettability and flexibility, and to maintain a moist and supple state. (JP-A-3-190808),
Clay minerals such as sodium montmorillonite (JP-A-1-1
No. 90622), shampoo compositions and the like have been proposed.

[0003]

However, although the conventional moisturizers described above are effective as moisturizers, their effects are not sufficient. Further, since the raw material is derived from a natural product, it is poor in supply stability and expensive. Further, depending on the surfactant as the main component, it may combine with the moisturizing agent to form a gel-like precipitate. Against this background,
Keeps moisture on the hair and the skin after washing hair, moisturizing,
There has been a strong demand for the appearance of a shampoo composition which gives a firmness and softness and is excellent in the effect of preventing the rough hands of a hair-washing worker and has a uniform appearance.

[0004]

The present inventors have arrived at the present invention as a result of intensive studies to obtain a shampoo composition that solves the above-mentioned problems. That is, the present invention is a shampoo composition comprising a super absorbent polymer (A) and an amphoteric surfactant (B). The purpose of the shampoo composition of the present invention is (1) by using a superabsorbent resin, a gel-like layer of the superabsorbent resin swollen with moisture is left on the hair in a trace amount (moisture content). Forming a barrier film containing), imparting moisture to the hair, imparting wettability and flexibility, (2) forming a gel layer of a super absorbent polymer on the fingers and hands of a hair-washing worker, Suppressing direct entry of surfactant components into the skin to protect fingers and hands (3) Furthermore, by using an amphoteric surfactant as an essential component, a composition having a uniform appearance can be obtained. , Etc.

In the present invention, as the super absorbent resin (A), for example, starch or cellulose (a),
A monomer selected from a water-soluble monomer containing a carboxyl group or a sulfonic acid group and a water-soluble monomer by hydrolysis (hereinafter referred to as a water-soluble monomer) (b),
A super absorbent polymer (hereinafter, referred to as a starch or a cellulosic cross-linked product) obtained by polymerizing the cross-linking agent (c) as an essential component and hydrolyzing as necessary.

Details of (a), (b) and (c) used in the production of the superabsorbent resin exemplified above, (a),
The ratios of (b) and (c), the production method and specific examples of the super absorbent resin are described in JP-A-52-25886 and JP-B-53-4.
6199, Japanese Patent Publication No. 53-46200 and Japanese Patent Publication No. 55
-21041 is described in each publication.

As superabsorbent resins other than those exemplified above, for example, those obtained by polymerizing (a) and (b) (hydrolyzate of starch-acrylonitrile graft polymer, cellulose-acrylonitrile graft polymer) (Hereinafter, referred to as starch or cellulose-acrylonitrile graft polymer)); (a) crosslinked product (carboxymethylcellulose crosslinked product); (b)
Copolymer of (c) (partial hydrolyzate of cross-linked polyacrylamide, cross-linked acrylic acid-acrylamide copolymer, cross-linked sulfonated polystyrene, JP 5
2-14689 and JP-A-52-27455, saponified vinyl ester-unsaturated carboxylic acid copolymer, crosslinked polyacrylic acid salt, crosslinked acrylic acid-acrylic ester acid copolymer A crosslinked isobutylene-maleic anhydride copolymer, and a crosslinked carboxylic acid-modified polyvinyl alcohol); and a polymer (b) having self-crosslinking property (self-crosslinking polyacrylic acid salt, etc.). Further, two or more kinds of the super absorbent resins exemplified above may be used in combination.

Among these, preferred ones among the above-exemplified ones are as follows: cross-linked polyacrylamide partially hydrolyzate, cross-linked acrylic acid-acrylamide copolymer, cross-linked polyacrylate, cross-linked An acrylic acid-acrylic ester acid copolymer, a crosslinked isobutylene-maleic anhydride copolymer, and a crosslinked carboxylic acid-modified polyvinyl alcohol.

The water absorption capacity of the highly water-absorbent resin (A) for pure water is usually 50 to 1000 g / g, preferably 100 to 1
It is 000 g / g. The shape of (A) is not particularly limited, but it is powdery or granular (particle size is usually 100 μ or less).
Are preferred. Particularly preferred is a fine powder having a particle size of 50 μm or less.

In the present invention, examples of the amphoteric surfactant (B) include betaine amphoteric surfactants such as coconut oil fatty acid amide propyldimethylaminoacetic acid betaine and lauryldimethylaminoacetic acid betaine, 2-alkyl-N-carboxymethyl- N-hydroxyethylimidazolinium betaine, 2-undecyl-N-carboxymethyl-N
-Imidazoline amphoteric surfactants such as hydroxyethyl imidazolinium betaine, amino acid type amphoteric surfactants such as sodium laurylaminopropionate, or sulfonate type amphoteric surfactants, sulfate ester type amphoteric surfactants, phosphoric acid Examples thereof include ester type amphoteric surfactants. Of these, preferred are betaine-type and imidazoline-type amphoteric surfactants from the viewpoint of reducing the feeling of use, particularly the squeak of hair. You may use these individually or in mixture of 2 or more types.

In the present invention, an ether carboxylate type anionic surfactant (C) can be used in combination with (B). The (C) is represented by the following general formula (1).

R—O— (CH ₂ CH ₂ O) _n —CH ₂ COOM (1) (wherein R is an alkyl group having 10 to 18 carbon atoms, M is an alkali metal or alkanolamine, and n is 1 to 30). Indicates the integer of.)

(C) Specific examples include polyoxyethylene (2; [representing n in the general formula (1); the same applies hereinafter)) lauryl ether carboxylic acid, polyoxyethylene (3)
Lauryl ether carboxylic acid, polyoxyethylene (4) lauryl ether carboxylic acid, polyoxyethylene (3) tridecyl ether carboxylic acid, polyoxyethylene (10) myristyl ether carboxylic acid, polyoxyethylene (8) palmityl ether carboxylic acid , Salts of polyoxyethylene (25) stearyl ether carboxylic acid, polyoxyethylene (5) coconut oil alkyl ether carboxylic acid, etc. with alkali metals or alkaline earth metals such as potassium, sodium, magnesium, calcium, or monoethanolamine , Salts with alkanolamines such as diethanolamine and triethanolamine. Among these, preferred are sodium salt of polyoxyethylene (3) lauryl ether carboxylic acid and sodium salt of polyoxyethylene (3) tridecyl ether carboxylic acid. You may use these in mixture of 2 or more types.

In the present invention, a dispersion stabilizer (D) may be added for the purpose of keeping the dispersion state of the composition uniform. Examples of the (D) include monosaccharides, oligosaccharides, polysaccharides and their modified products and inorganic substances.
Examples of monosaccharides in (D) include diose, tetrose, pentose, hexose, glucose and fructose; examples of oligosaccharides include sucrose, maltose, isomaltose, cellobiose, gentiobiose, lactose and sucrose;
Examples include simple polysaccharides (starch, glycogen, cellulose, etc.) and complex polysaccharides (hemicellulose, carrageenan glucosaminoglycahyaluronic acid, xanthan gum, guar gum, etc.).

Examples of the modified products include polysaccharide modified products (hydrophobicized starch, methyl cellulose, carboxymethyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose,
Hydroxypropyl methylcellulose and the like). Examples of the inorganic material include magnesium aluminum silicate and synthetic aluminum silicate.
Among these (D), preferred are polysaccharides, modified products thereof and inorganic substances.

The proportion of each component based on the weight of the shampoo composition of the present invention is as follows. (A) is usually 0.1 to 10%, preferably 1 to 8%,
(B) is usually 3 to 20%, preferably 5 to 15%,
(C) is usually 1 to 10%, preferably 2 to 8%, (D)
Is usually 0.01 to 8%, preferably 0.05 to 5%, and water is usually 55 to 95%, preferably 65 to 90%.

When (A) is less than 0.1%, the moisturizing properties of the hair after using the shampoo or the mild feeling on the hand skin during use become poor. If it exceeds 10%, the essential function of the shampoo is impaired. If the content of (B) is less than 3%, the shampoo is likely to separate, which impairs the stability of the shampoo. Also, the foaming power becomes poor. If it exceeds 20%, the concentration of the detergent component will be high, degreasing will be too strong, and the mild feeling on the skin will be poor. When (C) is less than 1%, the function as a shampoo becomes poor. If it exceeds 10%, the ionic balance is lost and separation is likely to occur. When (D) is less than 0.01%, the surfactant component may be separated from the surfactant component (A) swollen by absorbing water in the present invention with the passage of time, and the value as a shampoo is halved.
If it exceeds 8%, the function of dispersion stabilization of (D) is already in equilibrium, which is uneconomical and impairs the feel. If the water content is less than 55%, it becomes difficult to form a liquid, and if it exceeds 95%, the function as a shampoo becomes insufficient.

The method for producing the shampoo composition of the present invention is not particularly limited, but the following methods can be exemplified. A method in which (A), (B) and (C) are kneaded in a high-viscosity stirring layer, and then (D) and water are added and stirred to mix. A method in which (A), (B) and (C) are kneaded in a high-viscosity stirring layer, and then (D) is previously dispersed and mixed in water and mixed to prepare. A method in which (A), (B) and (C) are kneaded in a high-viscosity stirring layer, then (D) is partially dispersed and mixed in water in advance, and the remaining water is further mixed to prepare. Kneading water, (A) and (D) in a high viscosity stirring layer,
Then, a method of adding (B) and (C) and stirring and mixing to prepare. A method in which water and (A) are kneaded and dispersed in a high-viscosity stirring layer, and then (B) and (C) are added by stirring and mixing, and (D) is further added by mixing. Of these, the preferred method is and.

The shampoo composition of the present invention may contain, if necessary, other known components generally used. Other components include, for example, nonionic surfactants as foaming agents (coconut oil fatty acid diethanolamide, polyoxyethylene (2) coconut oil fatty acid monoethanolamide, etc.), pH adjusters (citric acid, phosphoric acid, etc.). ), Lower alcohols and polyhydric alcohols (ethanol, propylene glycol, glycerin, etc.), humectants (sodium pyrrolidone carboxylic acid, collagen, etc.), inorganic salts (sodium chloride, magnesium sulfate, etc.) as viscosity modifiers, chelating agents [1 -Hydroxyethane-1,1-disulfonate, nitrilotriacetic acid salt, ethylenediaminetetraacetic acid salt, etc. (as salts, alkali metal salts such as sodium and potassium)], antioxidant [2,6-di-
tert-butyl-p-cresol, 2,2-methylenebis- (4-methyl-6-tert-butylphenol, etc.), ultraviolet absorber (benzophenone-3, etc.), hair restorer (pantothenic acid, cholesterine, etc.), colorant, Examples thereof include fragrances, preservatives, antibacterial agents for removing dandruff, etc. Furthermore, the combined use of a compound containing a quaternary ammonium group, silicone, and a protein derivative improves the conditioning effect such as less squeaking on the hair. The total weight percentage of these other ingredients in the shampoo composition of the invention is usually less than 15%, preferably 1.
-10%.

[0020]

EXAMPLES The present invention will be further described below with reference to examples, but the present invention is not limited thereto. In the following,% means% by weight. The test methods in the test examples are as follows.

(1) Shampoo property A hair sample prepared by adhering 0.05% of lanolin and 0.05% of liquid paraffin as oil stain components to thoroughly washed human hair was prepared. The samples were washed with each shampoo composition. (Shampoo conditions) Diluted water concentration of shampoo composition: 0.5% Rice paddle temperature, time: 30 ° C, 2 minutes Sustain: Rinse under water Dry: 50 ° C, 30 minutes (Shampoo property) Wash with each shampoo composition Cyclohexane /
Soxhlet extraction was performed using ethanol (2/1 volume ratio) as a solvent, and shampoo property (cleansing power) was calculated from the following formula. Shampoo property (%) = (b−c) / (b−a) × 100 a: Extraction amount of hair before adhering oil stain components b: Extraction amount of hair before shampoo c: Of hair after shampoo Extraction amount The larger the value, the better the shampooing property.

(2) Foaming power: 200 cc of 1.5% aqueous solution of each shampoo composition was prepared using 5 ° C. hard water (German hardness), and lanolin 0.1 was prepared.
%, And the mixture was stirred at 30 ° C. for 5 seconds with a juicer mixer (Toshiba MX-390GX), and the foam height (m
The quick foaming property was evaluated by m). Then, the mixture was stirred for 30 seconds, and the foamability was evaluated by the foam height (mm) at that time.

(3) Usability Each shampoo composition was actually used by 10 male and 10 female panelists and evaluated for "creaking", "foaming", "foam quality" and "wettability" of hair after use. did. (Judgment) ◎: Remarkably good ○: Good △: Normal ×: Poor

(4) Skin Irritation A 1.0% (effective) aqueous solution of each shampoo composition was prepared, and a closed patch test (48
After the lapse of time, the inside of the upper arm was examined) and evaluated according to the following criteria. The results are shown as the total value. (Evaluation criteria) 0: No reaction (erythema) 1: Very slight erythema 2: Clear erythema 3: Moderate to strong erythema 4: Red flesh-like erythema

(5) Stability test of composition Shampoo compositions of the present invention (Examples 1 to 5) and comparative shampoo compositions (Comparative Examples 1 and 2) at various temperatures (~ 5 ° C to 20). Immediately after the preparation at 25 ° C. and 40 to 45 ° C., the appearance was visually observed 1 month and 6 months later. (Judgment) ○: Uniform liquid △: Floating matter present ×: Complete separation into two or more layers

Examples 1 to 5 (A), (B) and (C) were charged in a planetary mixer according to the blending ratios shown in Table 1, stirred and mixed uniformly. Separately, using a planetary mixer, a mixture of (D) dispersed and mixed in water was charged and uniformly mixed, and further other components were mixed to prepare a shampoo composition of the present invention.

Comparative Example 1 (a) and (c) were charged in a planetary mixer according to the blending ratio shown in Table 1, stirred and mixed uniformly. Separately using a planetary mixer (d)
What was dispersed and mixed in water was charged and uniformly mixed, and other components were further mixed to prepare a shampoo composition.

Comparative Example 2 (b) and (c) were charged in a planetary mixer in accordance with the blending ratio shown in Table 1, stirred and mixed uniformly. Further, other ingredients were mixed to prepare a shampoo composition.

[0029]

[Table 1]

The symbols in Table 1 are as follows. A-1: Starch / acrylic acid graft polymer [manufactured by Sanyo Chemical Industry Co., Ltd., Sunwet IM-1000MPS] A-2: crosslinked sodium polyacrylate [manufactured by Sanyo Chemical Industry Co., Ltd., Sunwet IM-5000MPS] ] B-1: lauryl dimethylamino acetic acid betaine B-2: coconut oil fatty acid amide propyl dimethylamino acetic acid betaine B-3: 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine C-1: polyoxy Ethylene (3) sodium tridecyl ether carboxylate C-2: Polyoxyethylene (3) sodium lauryl ether carboxylate D-1: Xanthan gum D-2: Carboxymethyl cellulose D-3: Magnesium aluminum silicate CD: Coconut oil fatty acid diethanolamide C: Sodium chloride MP: Methyl p-hydroxybenzoate CA: Citric acid (a): Starch / acrylic acid graft polymer [Sanyo Chemical Co., Ltd., Sunwet IM-1000MPS] (b): Sodium hyaluronate ( c): sodium polyoxyethylene lauryl ether sulfate (d): xanthan gum (e): propylene glycol (f): coconut oil fatty acid diethanolamide (g): sodium chloride (h): methyl p-hydroxybenzoate (i): citric acid

Test Examples and Comparative Test Examples Shampoo properties and foaming properties of the shampoo compositions obtained in Examples 1-5 and Comparative Examples 1-2 in order to evaluate the performance of the shampoo compositions and comparative products of the present invention. Strength, usability, skin irritation and stability tests were performed. The results are shown in Tables 1 and 2.

[0032]

[Table 2]

[0033]

EFFECTS OF THE INVENTION The shampoo composition of the present invention is superior to conventional shampoos in shampooing property, foaming property, usability and the like, retains water on the hair and skin after washing, and has wettability, stickiness and softness. In addition to imparting properties, it can be expected to have an effect of preventing rough hands of a hair-washing worker due to its low skin irritation, penetration into the skin, and appropriate water retention, and has a uniform appearance and high commercial value.

Claims (6)

[Claims] 1. A shampoo composition comprising a super absorbent polymer (A) and an amphoteric surfactant (B). 2. The shampoo composition according to claim 1, which contains an ether carboxylate type anionic surfactant (C). 3. The shampoo composition according to claim 1, which contains at least one dispersion stabilizer (D) selected from monosaccharides, oligosaccharides, polysaccharides, modified products thereof and inorganic substances. 4. The water absorption capacity of pure water (A) is 50 to 1
The shampoo composition according to any one of claims 1 to 3, which is 000 g / g. 5. The shampoo composition according to claim 1, wherein the particle size of (A) when dried is 100 μm or less. 6. The weight ratio of (A), (B), (C), (D) and water is (0.1-10) :( 3-20) :( 1
10) :( 0.01-8) :( 55-95), The shampoo composition in any one of Claims 1-5.