JP2003138296A - Shampoo composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shampoo composition which has reduced irritation to the skin and hair, prevents the damage to hair, and excels in the retention of suds, the quality of suds, a finishing feeling, and a feeling of use. SOLUTION: The shampoo composition comprises (A) an acylamino acid based surface active agent, (B) a silylated hydrolyzed protein, (C) a copolymer cationic polymer compound of a polydimethyldiallylammonium chloride type cationic polymer and/or a dimethyldiallylammonium chloride with acrylamide.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention has little irritation to skin and hair, prevents damage to hair, retains foam,
The present invention relates to a shampoo composition which is excellent in foam quality, finished feel and usability.

[0002]

2. Description of the Related Art Conventionally, various cleaning agents such as shampoo have been developed and proposed. Such a cleaning agent must be excellent in its original purpose of cleaning performance, but must also be sufficiently considered for irritation of the scalp and eye mucous membrane. In view of the increasing trend of the sensitive skin population in recent years, the demand for hypoallergenicity is increasing.

As a general anionic surfactant used as a shampoo base, a sulfate ester type anionic surfactant has been conventionally used.

Shampoos containing these anionic surfactants as a main component are excellent in detergency, but the feeling of use such as squeaky feeling during rinsing and tightness after use is not sufficiently satisfactory. Not only that, but there is a problem that irritation to the skin and damage to the hair are great.

From such a background, an acylamino acid-based surfactant has been used as a base of shampoo as a surfactant replacing the anionic surfactant. However, when an acylamino acid-based surfactant is used, it is less irritating to the skin and hair,
The foam performance was not sufficient in terms of foam retention, creamy property, foaming property, and feeling of sliminess.

[0006]

In order to solve the above-mentioned problems, Japanese Patent No. 160293 discloses a combination of an alkyloylalkyl taurine type anionic surfactant, an amphoteric surfactant and a nonionic surfactant, and JP-A No. hei 8/1983. Although the combination of N-acylalanine salt, higher fatty acid salt and other surfactants is reported in -3585, it is not sufficiently satisfactory in terms of the feeling of use such as foam quality and feeling after washing. It was Further, as a method for improving the feeling of sliminess and the like, improving combability, giving gloss and moisturizing to hair, and preventing damage to hair, JP-A-7-285836 and JP-A-8-81.
Although there is a compound of silylated peptide reported in 339, satisfactory results were not obtained in terms of foam retention and foam quality.

[0007]

Means for Solving the Problems As a result of intensive studies by the present inventors, the following (A)-
It was found that the above problem can be solved by containing the component (C).

First, basically, (A) an acylamino acid type surfactant There is provided a shampoo composition containing:

[0009] In the above, it is preferable that the amount of each component contained is 1 (A) acylamino acid surfactant.
.About.50% by weight, (B) silylated hydrolyzed protein is 0.
0.01 to 10% by weight, and 0.01 to 10% by weight of (C) polydimethyldiallylammonium chloride type cationic polymer and / or copolymerized cationic polymer compound of dimethyldiallylammonium chloride and acrylamide.

In the above, preferably, the (A) acylamino acid-based surfactant is blended with one or more selected from N-acylmethyltaurine salts and N-acylalanine salts.

In the above, preferably, (B) the hydrolyzed polypeptide of silylated hydrolyzed protein is a hydrolyzed polypeptide obtained from collagen protein, keratin protein, soybean protein and silk protein.

In the above, it is preferable that the shampoo composition does not contain a sulfate ester type anionic surfactant.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described. First, each component used in the present invention will be described in detail.

(A) Acyl Amino Acid Surfactant (hereinafter referred to as "Component (A)") The acyl group represented by the component (A) has 8 to 2 carbon atoms.
Derived from two saturated or unsaturated fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, and other single-component fatty acid acyl groups. Other examples include coconut oil fatty acid and castor oil. It may be an acyl group of a naturally occurring mixed fatty acid such as fatty acid or palm oil fatty acid, or a synthetically obtained fatty acid (including branched fatty acid). Examples of the salt include alkali metals such as sodium and potassium, alkaline earth metals such as calcium and magnesium, alkanolamines such as triethanolamine, ammonia salts, and basic amino acids such as lysine and arginine.

Examples of the component (A) include acyl acidic amino acid salts and acyl neutral amino acid salts. Further, these acylamino acid-based surfactants may be either optically active substances or racemic substances. Specifically, N-acyl methyl taurine salt, N-acyl sarcosine salt, N-acyl threonine salt, N-acyl alanine salt, N-acyl-N-methyl-β-alanine salt, N-acyl glycine salt, N -Acyl glutamate.

Of these, the acyl group is preferably a higher fatty acid residue having 9 to 17 carbon atoms or a coconut oil fatty acid residue. As the salt, sodium which is an alkali metal or triethanolamine which is an alkanolamine is preferable.

Of these, N-acylalanine salts and N-acylmethyltaurine salts are preferable in terms of the speed of foaming, the feeling of foaming, the creaminess and the feeling when washing hair, and among these, N-cocoylalanine triethanolamine. , N-cocoylmethyl taurine salt is particularly preferred.

The components (A) can be used alone or in admixture of two or more. The blending amount is preferably 1 to 50% by weight. Particularly, the compounding amount of 20 to 40% by weight is particularly preferable from the viewpoints of detergency, foaming property and low irritation. The reason for this is that if the blending amount is less than 1% by weight, the effect is not fully exerted, and if it exceeds 50% by weight, the detergency becomes strong and irritation occurs, and squeaky feeling etc. appear during hair washing. It feels bad.

(B) Silylated hydrolyzed protein (hereinafter referred to as "component (B)")

[0020] n is 1 to 200, where n only indicates the number of amino acids,
It does not indicate the order of amino acid sequences. R represents a side chain of an amino acid, and examples thereof include lysine, arginine, hydroxylysine, glutamic acid, aspartic acid, alanine, serine, threonine, parin, methionine, leucine, isoleucine, tyrosine, phenylalanine, proline and hydroxyproline. .

As the hydrolyzed polypeptide, collagen (including its modified product gelatin), keratin, silk fibroin, casein, conchiolin, elastin,
Egg yolk protein of eggs such as chicken, duck, egg white protein, soy protein, wheat protein, rice bran protein, potato protein, corn protein and other animal and plant proteins, or yeast strains of Saccharomyces, Candida and Endomycopsis, and so-called beer yeast , A yeast protein isolated from a yeast called sake yeast, a protein extracted from mushrooms (basidiomycetes), and a polypeptide obtained by hydrolyzing a protein isolated from chlorella with an acid, an alkali, or an enzyme.

Of these, the component (B) obtained by adding 3-glycidoxypropylmethyldihydroxysilane to a polypeptide obtained by hydrolyzing collagen protein, keratin protein, soybean protein and silk protein is particularly preferable. The degree of polymerization of amino acids is preferably 1-10.

As the component (B) containing the above-mentioned hydrolyzed polypeptide, Promois W-52SIG as a silylated collagen hydrolyzate, Promois WK-HSIG as a silylated keratin hydrolyzate, silylated soybean protein hydrolyzate As Promoise WS-HSIG,
Promoise S-700 as siliconized hydrolyzed silk
SIG (all manufactured by Seiwa Kasei Co., Ltd., trade name) and the like are commercially available.

The components (B) can be used alone or in admixture of two or more. The blending amount is preferably 0.01 to 10% by weight. Especially 0.1
A blending amount of up to 5% by weight is preferable in terms of feeling and combing. The reason for this is that if the blending amount is less than 0.01% by weight, the effect is not sufficiently exhibited, and if it exceeds 10% by weight, the effect of improving the use performance is not recognized for the amount, and
When you wash your hair, you will feel a squeaky feeling and, on the contrary, will feel uncomfortable.

(C) Polydimethyldiallylammonium chloride type cationic polymer and / or copolymerization of dimethyldiallylammonium chloride and acrylamide Cationic polymer compound (hereinafter referred to as component (C))

[0026] (In the formula, s is an integer of 100 to 5000.)

[0027] (The sum of t and u in the formula is 500 to 1000.
An integer in the range 0. )

[0028]

[0029]

The blending amount of the component (C) is preferably 0.01 to 10% by weight, and particularly preferably 0.1 to 5% by weight in terms of foam quality and feel. 0.01% by weight for this reason
If it is less than 1, the creaminess of the foam does not appear and the hair does not have a moisturizing feel. On the other hand, if it is 10% by weight or more, the effect of improving the use performance is not recognized for the amount.

In the shampoo composition of the present invention, various additive components generally used other than the above-mentioned essential components, such as higher fatty acid salts, may be added as needed depending on the purpose of use, etc., within a range that does not impair the object of the present invention. Anionic surfactants such as
Amidopropyl betaine, amphoteric surfactants such as imidazolinium betaine, cationic surfactants such as alkyl trimethyl ammonium salts, coconut oil fatty acid alkanol amines, nonionic surfactants such as alkyl glucosides,
Polar nonionic surfactants such as amine oxides, silicone derivatives such as dimethylpolysiloxane or emulsions thereof, polyols, inorganic salts, organic salts, solubilizers, antioxidants such as BHT and α-tocopherol, thickeners, reducing agents. Adhesives, UV absorbers, protein derivatives, conditioning agents such as cationized polymers, animal extracts, humectants, preservatives such as benzoates and parabens, pH adjusters such as citric acid and triethanolamine, pearlizing An agent, an emulsifying agent such as an acrylic polymer, a coloring agent such as copper chlorophyll or sodium copper chlorophyllin, a pigment, and a fragrance can be added.

The shampoo composition of the present invention can be manufactured by a conventional method. The dosage form is also not particularly limited, and any dosage form such as liquid, paste, cream, solid, and powder can be formed, and liquid, paste, and cream are preferable, and liquid is particularly preferable. Is desirable.

In the case of a liquid state, it is preferable to use water or the like as the liquid medium, and the water content is 20 in the total composition.
-80 wt% is preferred.

The shampoo composition of the present invention has a pH of 5 to 11, especially pH of an aqueous solution when diluted 10 times by weight with water.
6 to 9 is preferable, and it may be adjusted by adding an acid or an alkali to the detergent composition.

When the shampoo composition of the present invention is in a liquid state, for example, it has a viscosity at 25 ° C. of 50 to 10,000 mPas.
-S, particularly 500 to 3000 mPa-s, is preferable from the viewpoint of ease of use.

In the present invention, examples of the sulfate ester salt type anionic surfactant which is preferably not contained in the shampoo composition include anionic surfactants such as alkyl sulfates and ether sulfates.

The alkyl sulfate type anionic surfactant is
It is a salt of an ester of a straight chain or branched chain saturated or unsaturated higher alcohol having 8 to 22 carbon atoms and sulfuric acid. Specific examples include lauryl sulfate, myristyl sulfate, oleyl sulfate and the like.

The ether sulfate type anionic surfactant is
It is an alkylene oxide addition type of the alkyl sulfate. Specific examples thereof include polyoxyethylene lauryl ether sulfate, polyoxyethylene myristyl ether sulfate, and polyoxyethylene oleyl ether sulfate.

The salts of these sulfate ester type anionic surfactants include alkali metals such as sodium and potassium, alkaline earth metals such as calcium and magnesium,
Examples include alkanolamines such as triethanolamine, ammonia salts, and basic amino acids such as lysine and arginine.

When these sulfate ester type anionic surfactants are used as the main component of shampoo, not only the excellent feeling of the present invention is impaired due to the squeaky feeling during rinsing, the tightness after use, etc. There is a problem that damage to hair is great. for that reason,
It is preferable not to incorporate a sulfate ester type anionic surfactant in the shampoo composition of the present invention.

[Examples] The present invention will be described in more detail below with reference to Examples, but the present invention is not limited thereto.

Shampoo compositions having the compositions shown in Tables 1 and 2 were produced and evaluated for the feel at the time of washing hair, irritation to the scalp and eyes, foam quality, and foam retention. The point of damage to hair is described in the table. Have you use the shampoo for a long time (more than one week) and feel the hair after washing it (feeling of finish)
Then, the hair was dried with a towel or a dryer, and then evaluated by combing.

With the consent of 96 healthy men and women in their 20s to 60s, the feeling of washing hair, irritation to the scalp and eyes, foam quality,
A sensory evaluation was performed on the feeling (finishing feeling) of the hair after washing and the combing after the hair was dried with a towel dryer or a dryer when used for a long time (more than one week) with foam retention.

Regarding the feel at the time of washing hair, the feel of hair after washing (finishing feeling), foam retention, foam quality, and comb passage, each was 5
A graded evaluation was performed, and the results were averaged and judged.

5 points: Very good 4 points: Good 3 points: Normal 2 points: Slightly bad 1 point: Poor ◎: Average score of 4.5 points or more ○: Average score of 3.5 points or more and less than 4.5 points △ : Average score of 2.5 to less than 3.5 points x: Average score of less than 2.5 points

Irritation to the scalp and eyes was evaluated on a 4-point scale as shown below. A: No irritation or itch is felt. ○: Slight irritation / itch is felt. Δ: Irritation / itch is felt. ×: Strongly stimulating and itching.

Shampoo compositions were prepared with the respective formulations shown in Tables 1-2. The blending amount is% by weight.

[0048]

[Table 1]

[0049]

[Table 2]

As is clear from the results obtained in Examples 1 to 5, the present invention is less irritating to the skin and hair, prevents damage to the hair, retains the foam, gives the foam quality and the feeling of finish, and can be used. It was a shampoo composition having an excellent feeling.

In Comparative Examples 1 and 2, since the sulfate ester type anionic surfactant was the main component, a feeling such as squeaky feeling was produced, and the usability was not satisfactory.
I have been stimulated.

In Comparative Example 3, since the amount of the component (A) is large, the detergency becomes strong, and there is squeaky feeling, irritation, and hair damage is also induced.

In Comparative Example 4, since neither the component (B) nor the component (C) was blended, a satisfactory evaluation could not be obtained in all the evaluations.

In Comparative Examples 5 and 6, since the amount of the silylated hydrolyzed protein was not sufficient, the combability was poor, and no satisfactory results were obtained in the evaluation of the finished feel and the feel at the time of washing hair. Furthermore, it resulted in irritation to the hair and scalp.

In Comparative Examples 7 and 8, since the blending amount of the component (C) was not sufficient, the moisturization to the hair was not sufficiently performed, the feeling of the touch was deteriorated, and irritation occurred. In particular, the evaluation of foam retention and foam quality was poor.

As described above, it is apparent that Comparative Examples 1 to 8 do not meet the conditions of the present invention, and thus the object of the present invention has not been achieved.

[0057]

EFFECTS OF THE INVENTION A low-stimulation amino acid surfactant is used as a main component, and silylated hydrolyzed protein and polydimethyldiallylammonium chloride type cationic polymer and / or dimethyldiallylammonium chloride and acrylamide are used together. By blending a polymerized cationic polymer compound, it further reduces irritation and protects the hair, smoothes the surface of the hair, imparts gloss and luster to the hair, and improves combability of the hair. Prevents split ends from being generated by combing, and further improves the retention and quality of foam.

By combining the above components, there is no irritation to the skin and hair, and hair damage is prevented,
It is possible to provide a shampoo composition having excellent foam retention, foam quality and finish, and feeling of use.

[Procedure amendment]

[Submission date] October 31, 2001 (2001.10.10.
31)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction content]

The components (A) may be used alone or in admixture of two or more. The blending amount is preferably 1 to 50% by weight. Particularly, the compounding amount of 20 to 40% by weight is particularly preferable from the viewpoints of detergency, foaming property and low irritation. The reason for this is that if the blending amount is less than 1% by weight, the effect is not fully exerted, and if it exceeds 50% by weight, the detergency becomes strong and irritation occurs, and squeaky feeling etc. appear during hair washing. It feels bad.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0024

[Correction method] Change

[Correction content]

The components (B) can be used alone or in admixture of two or more. The blending amount is preferably 0.01 to 10% by weight. Especially 0.1
A blending amount of up to 5% by weight is preferable in terms of feeling and combing. The reason for this is that if the blending amount is less than 0.01% by weight, the effect is not sufficiently exhibited, and if it exceeds 10% by weight, the effect of improving the use performance is not recognized for the amount, and
When you wash your hair, you will feel a squeaky feeling and, on the contrary, will feel uncomfortable.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Masato Kono             65-1 Irino, Okabe-cho, Shita-gun, Shizuoka Nikko Pharmaceutical             Within the corporation F-term (reference) 4C083 AC122 AC642 AC661 AC662                       AC712 AC782 AC792 AD131                       AD132 AD411 AD431 AD441                       AD442 AD451 CC38 EE06                       EE07 EE10 EE29                 4H003 AB08 AB10 AB23 AC13 AD04                       BA12 DA02 EB05 EB28 EB44                       ED02 FA07 FA17 FA21

Claims (5)

[Claims] 1. An acylamino acid-based surfactant (A), which is a component (A) to (C) below: A shampoo composition comprising: 2. The blending amount of (A) acylamino acid surfactant is 1 to 50% by weight, (B) silylated hydrolyzed protein is 0.01 to 10% by weight, and (C) polydimethyldiallylammonium chloride. Type cationic polymer and /
Alternatively, the copolymerization of dimethyldiallylammonium chloride and acrylamide is 0.01
The shampoo composition according to claim 1, wherein the shampoo composition is 10% by weight. 3. The (A) acylamino acid surfactant is
The shampoo composition according to claim 1 or 2, wherein one or more kinds selected from N-acylmethyltaurine salt and N-acylalanine salt are blended. 4. The hydrolyzed polypeptide of the silylated hydrolyzed protein (B) is a hydrolyzed polypeptide obtained from collagen protein, keratin protein, soybean protein, and silk protein.
The shampoo composition according to claim 2 or claim 3. 5. The shampoo composition according to claim 1, claim 2, claim 3 or claim 4, which does not contain a sulfate ester type anionic surfactant.