JPH0713007B2 - Pre-hair rinse type hair treatment composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a pre-hair rinse type hair treatment composition used by applying to hair before hair rinsing. For more details,
The present invention relates to a pre-hair rinse type hair treatment composition, which comprises at least one or more anionic polymer and imparts smoothness and suppleness to the hair while imparting tension and firmness.

[Prior Art] Conventional shampoo has a function to clean and clean dirt on the skin and hair, but on the other hand, some drawbacks have been pointed out that excessive sebum components secreted from the scalp are excessive. Since the hair is removed, the feel of the hair, the brush, the comb, the gloss, and the easiness of cohesion are inferior.

Therefore, as hair cosmetics for the purpose of restoring smoothness, suppleness, and luster to hair after shampoo to improve combability, names of hair rinses, hair treatments, hair conditioners, etc. (hereinafter collectively referred to as hair rinse agents Are available on the market. A quaternary ammonium salt is mainly added to these hair cosmetics, and oil, protein, etc. have been added for the purpose of improving smoothness, moisturizing and gloss.

[Problems to be Solved by the Invention] However, by using a conventional hair rinse agent after shampooing, it is possible to restore the suppleness, smoothness and luster of hair and improve combability, but on the other hand, the oil It has been pointed out that the softness, stickiness, etc. appear, and that the hair has a feeling of finishing and sticks to the hair, and there is a lack of stiffness and a natural feeling of cohesion.

In view of these circumstances, the present inventors have conducted intensive studies to solve the above-mentioned drawbacks, and as a result, before using the hair rinse agent after shampoo, pre-hair rinse containing a specific anionic polymer as an active ingredient. When the hair treatment composition is applied to hair and then treated with a hair rinse agent, the hair after shampoo is given suppleness, smoothness and luster, and further, combing is restored, and yet it is oily. Based on this finding, the present invention has been completed based on the finding that it gives the hair a feeling of stickiness and firmness without stickiness and gives a natural feeling of cohesion.

[Means and Actions for Solving Problems] That is, the present invention provides a prehair rinse-type hair treatment composition containing at least one or more anionic polymers.

Hereinafter, the configuration of the present invention will be described in detail. The anionic polymer used in the present invention is xanthan gum, glucomannan, quince seed gum, locust bean gum, gum arabic, guar gum, sodium alginate, carrageenan (copper, lambda, iota), pectin, hyaluronic acid, chondroitin tetrasulfate. , Polysaccharides such as chondroitin octasulfate, dermatan sulfate, chondroitin 4,8 disulfate, dermatan 4,8 disulfate, keratan sulfate, or heparan sulfate, or sodium polyacrylate, carboxymethyl cellulose, methyl vinyl ether / maleic anhydride copolymerization A synthetic polymer such as an acrylic acid ester / methacrylic acid ester / diacetone acrylic amide / acrylic acid / methacrylic acid copolymer or a crosslinked carboxyvinyl polymer. Above species is selected and used arbitrarily.

The amount of the anionic polymer compounded is 0.01 to 5% by weight (hereinafter simply abbreviated as%), preferably 0.1 to 3%, based on the total amount of the pre-hair rinse hair treatment composition. If it is less than 0.01, suppleness, smoothness, and gloss are less likely to be exhibited even after treatment with the hair rinse agent after application of the present pre-hair rinse type hair treatment composition, and the firmness and firmness of the hair are not satisfactory. If it exceeds 5%, the hair becomes sticky or stiff after drying, which is not preferable.

The pre-hair rinse type hair treatment composition containing the anionic polymer according to the present invention further comprises one or more quaternary trimethylammonium-derived polypeptide represented by the following general formula [1] in combination. By doing so, the effect on the hair is further improved.

(In the formula, R ₁ is an amino acid that constitutes a polypeptide derived from collagen, and n is 3 to 20.) The quaternary trimethylammonium-derived polypeptide is described below.

The polypeptide moiety in the above general formula (I) is derived from a protein (silk protein) that constitutes collagen, and the side chain represented by R ₁ is a side chain amino acid of the protein that constitutes collagen. Generally, it is a mixture of alanine, glycine, valine, leucine, isoleucine, proline, phenylalanine, tyrosine, serine, threonine, arginine, lysine, aspartic acid, asparagine, glutamic acid, histidine, methionine, hydroxyproline, hydroxylysine, etc. The composition is shown in Table 1 as an example.

Such a quaternary trimethylammonium-derived polypeptide represented by the general formula (I) is generally obtained by reacting 3-chloro-2-hydroxypropyltrimethylammonium chloride with a collagen-derived polypeptide.

3-Chloro-2-hydroxypropyltrimethylammonium chloride (hereinafter referred to as CTA) used in the above reaction is known as existing chemical substance (2) -181, and has a concentration of 50% (wt%, the same applies hereinafter). Aqueous solutions are commercially available and are easily available. On the other hand, collagen-derived polypeptides are generally obtained by hydrolyzing gelatin, which is a modified product of collagen, with an acid, an alkali, or a protease.

Upon hydrolysis, the amount of acid, alkali or enzyme to be added, the reaction temperature, and the reaction time are appropriately selected so that the degree of polymerization of the animal protein-derived polypeptide obtained (value of n in the general formula (I)} is 3 ~ 20 or about by molecular weight
It can be appropriately adjusted within the range of 300 to 2000 sintered bodies.

It should be noted that collagen-derived polypeptides having such a molecular weight range have hitherto been used in various fields as a natural cosmetic material-derived safe cosmetic raw material. In the quaternary trimethylammonium-derived polypeptide represented by the general formula (I), when n is less than 3, adsorption to hair is insufficient, and when n exceeds 20, adsorption to hair is weak and gelation occurs. It is difficult to handle because of

Then, the reaction is carried out by dropping an aqueous solution of collagen-derived polypeptide and bringing the collagen-derived polypeptide and CTA into contact with each other in water. During the reaction, it is desirable to keep the pH in the reaction system at 8 to 12, particularly 9 to 11, and therefore, an alkaline aqueous solution such as sodium hydroxide or potassium hydroxide is added dropwise into the reaction solution as needed.

During the reaction, the pH in the reaction system is maintained within the above range, in order for the amino group of the collagen-derived polypeptide to react with CTA, it is desirable that the pH is 8 or more alkali, and if the pH exceeds 12, This is because CTA and collagen-derived polypeptide cause hydrolysis.

The reaction proceeds even at room temperature, but the higher the temperature, the faster the reaction. However, when the temperature is high at high pH, the hydrolysis of collagen-derived polypeptide and CTA is accelerated, and only low molecular weight compounds can be obtained.
It is preferable that the temperature is not higher than ° C. At the time of reaction, collagen-derived polypeptide has a high viscosity at high concentration and a uniform reaction becomes difficult, so it is preferable to use an aqueous solution with a concentration of about 30 to 50% .For CTA, a commercially available aqueous solution with a concentration of about 50% is used as it is. You can use it.

Drip of CTA to collagen-derived polypeptide is 30 minutes ~
It is preferably finished in 6 hours. When CTA is dropped, the reaction shown in the following formula proceeds, Since hydrogen chloride is generated and the pH of the reaction solution decreases, it is preferable to add an alkali at the same time as the addition of CTA and stir to maintain the pH in the solution at a pH suitable for the reaction, and thus at least 30 minutes for the addition. It is preferable to take some time. CT
After dropping A, continue stirring for about 2 to 6 hours and adjust the pH to 9 to 11
It is preferable that the reaction is completed by keeping the temperature at room temperature and then leaving it for one day or night or by heating to about 60 ° C. Then, the progress and completion of the reaction are confirmed by measuring amino nitrogen in the polypeptide by the Van Slake method.

The amount of the quaternary trimethylammonium-derived polypeptide used is 0,0 based on the total amount of the pre-hair rinse type hair treatment composition.
It is 001 to 5% by weight, preferably 0.01 to 3% by weight. If it is less than this range, the affinity for hair is insufficient and the adsorptivity is poor, and if it exceeds this range, the feeling of use tends to be sticky, which is not preferable.

Even if the anionic polymer used in the present invention is used together in a hair rinse composition containing a cationic surfactant as a main component, not only the excellent effect as in the present invention cannot be obtained, but also the composition The stability was extremely poor because agglomerates were formed in the product, and separation and precipitation occurred over time.

The pre-hair rinse hair treatment composition of the present invention requires water for completing the composition composition in addition to the above-mentioned essential components, and may also be compounded with components and additives commonly used in hair cosmetics. It is possible. That is, higher alcohols, oils such as silicone oil and liquid paraffin, humectants such as propylene glycol and glycerin, POE (polyoxyethylene; hereinafter the same) hydrogenated castor oil, nonionic surfactants such as POE alkyl ethers, citric acid , Organic acids such as lactic acid,
Inorganic salts such as sodium chloride and potassium chloride, fragrances, coloring agents, preservatives, chelating agents, ultraviolet absorbers and the like can be appropriately added within a range that does not impair the effects of the present invention.

EXAMPLES Next, the present invention will be described in more detail with reference to examples. The present invention is not limited to this. The blending amount is% by weight. The performance of the pre-hair rinse hair treatment composition was evaluated by the following methods.

Feeling of Hair after Washing 20 female panels were compared and evaluated by Half-Head (half-head comparison method). That is, the hair was washed once with 10 g of commercial shampoo and rinsed lightly, and then the second shampoo was washed with 5 g of the same shampoo. After light rinsing, 10 g of the pre-hair rinse type hair treatment composition of the present invention is applied to one half of the hair, and nothing is applied to the other half. After 2 minutes, apply a commercial hair rinse to all the hair, and after 2 minutes, wash it off with hot water. Then, it air-dried and evaluated by sensory.

The evaluation was carried out on five items of "smoothness", "suppleness", "gloss", "hair and firmness of hair", and "easiness of cohesion of hair".

The sensory evaluation was carried out by the following four-level evaluation by paired comparison with the one not coated with the pre-hair rinse type hair treatment composition of the present invention.

Remarkably good, ⊚, good, ◯, normal, and poor.

Examples 1 to 3 The hair treatment composition shown in Table 2 was prepared by the following method.

(Production method) In Comparative Examples 1 and 2, PO was prepared by adding and dissolving dipropylene glycol or glycerin in ion-exchanged water, and further dissolving by heating.
E (20) oleyl ether was added to the preservative, coloring agent,
A fragrance was added to obtain a sample.

In Comparative Example 3, dipropylene glycol and causticari were added to ion-exchanged water, and the mixture was heated and dissolved and kept at 70 ° C. (A
Part) Other ingredients are mixed, dissolved by heating and kept at 70 ° C. (B
Part) Part B was added to Part A, and the mixture was mixed with stirring and then emulsified with a homomixer. After emulsification, the mixture was stirred and cooled to 30 ° C. to obtain a milky hair cream.

In Examples 1 to 3, various anionic polymers were dissolved in ion-exchanged water with stirring, and then POE (20) oleyl ether preservative, which was heated and dissolved, a fragrance, and a coloring agent were sequentially added to obtain gel-like samples.

(Effects) As can be seen from Table 2, in all of the items of the present invention, smoothness, suppleness, gloss, hair elasticity, and hair easiness of cohesion, it is much more effective than the moisturizer aqueous solutions and hair creams of Comparative Examples. It turns out that it is excellent.

Examples 4 to 9 The hair treatment composition shown in Table 3 was prepared by the following method.

(Production method) Various polymers shown in Table 3 were wet-dispersed in dipropylene glycol, added to ion-exchanged water and dissolved by stirring, and then,
A sample was obtained by sequentially dissolving the heat-dissolved POE (20) oleyl ether, the preservative, the fragrance, and the coloring agent.

(Effect) As can be seen from Table 3, when a hair treatment agent containing no anionic polymer is used, the smoothness is remarkably inferior, and the suppleness and gloss are also unfavorable. It was not appropriate and tended to be stiff.
The system containing the anionic polymer is very excellent in smoothness, suppleness, and easy-to-set hair. When it is electrically adsorbed and coated, and then treated with a hair rinse agent, the affinity with the cationic surfactant in the hair rinse agent increases to form a complex, and the oil content in the hair rinse agent becomes cations. It is considered that excellent usability appears because the complex and the oil component remain on the hair even after washing by physically adsorbing to the lipophilic group of the surfactant.

Examples 10 to 11 The hair treatment compositions shown in Table 4 were prepared in the same manner as in Examples 1 to 9 and the effects were examined.

The quaternary trimethylammonium-derived collagen polypeptide blended in Comparative Example 9 and Example 11 was obtained by the method shown in Reference Example 1 below.

Reference Example 838 g of collagen-derived polypeptide with a concentration of 40.5% (average molecular weight of collagen-derived polypeptide of 1500, total amount of amino-nitride 216 mmol) was placed in a reaction vessel, and 71 g of CTA aqueous solution with a concentration of 49% was added with stirring (71 g (collagen-derived polypeptide)). Amino acid nitrogen of peptide (0.85 equivalent) was added dropwise over 30 minutes, and 20% aqueous sodium hydroxide solution was added dropwise during that period to continue stirring for 2 hours while maintaining the PH after the reaction at 11.0, and then for 24 hours. After the standing, the amino nitrogen was measured and the total amount of amino nitrogen was 39 mmol, indicating that 82% of the amino nitrogen had reacted.

Next, weak acid cation exchange resin Amberlite IRC-50
(Trade name: Organo Co., Ltd.) 120 ml was added to neutralize to pH 6.7, sodium ions in the reaction solution and a little remaining unreacted CTA were adsorbed on the ion exchange resin, and then ion exchange resin Was removed to obtain an aqueous solution having a dry residue of 30%.

When the resulting aqueous solution was subjected to a quaternary ammonium salt exhibiting reaction, sodium tetraphenylboron caused a white precipitate and a Dragendorff reagent caused a red precipitate, which was positive.

Furthermore, in order to confirm that the collagen-derived polypeptide and CTA are bound, the obtained aqueous solution was used,
Gel filtration (G-25, manufactured by Pharmacia) was carried out, and the above-mentioned oxidative reaction was carried out for each molecular weight fraction. As a result, each quaternary ammonium salt was positive for the oxidative reaction and collagen induction was observed. It was confirmed that the polypeptide and CTA were bound.

(Effect) As can be seen from Table 4, the effect on hair was never satisfied only by the incorporation of the quaternary trimethylammonium-derived collagen polypeptide. However, the sample compounded with the anionic polymer of the present invention is excellent in all the items, and particularly, it is particularly effective for the hair beam, the strain, and the
The effect was much more excellent in terms of hair cohesion.

EFFECT OF THE INVENTION The pre-hair rinse type hair treatment composition of the present invention is used between conventional shampoo and hair rinse. Thus, you can give your hair a suppleness, smoothness, and luster, make it easier to comb, and have no stickiness or oiliness. .

Claims (6)

[Claims] 1. A pre-hair rinse type hair treatment composition comprising at least one anionic polymer. 2. The pre-hair rinse type hair treatment composition according to claim 1, wherein the anionic polymer is a natural polysaccharide. 3. Natural polysaccharides are xanthan gum, glucomannan, quince seed gum, locust bean gum, gum arabic, guar gum, sodium alginate, carrageenan (copper, lambda, iota), pectin, hyaluronic acid, chondroitin 4 sulfate, chondroitin 8 The pre-hair rinse hair treatment composition according to claim (2), which is sulfuric acid, dermatan sulfate, chondroitin 4,8 disulfate, dermatan 4,8 disulfate, keratan sulfate or heparan sulfate. 4. The prehair rinse-type hair treatment composition according to claim 1, wherein the anionic polymer is a synthetic polymer. 5. Synthetic polymer is sodium polyacrylate, carboxymethyl cellulose, methyl vinyl ether / maleic anhydride copolymer, acrylic ester / methacrylic ester / diacetone acrylate / acrylic acid / methacrylic acid copolymer. A pre-hair rinse hair treatment composition according to claim (4), which is a substance or a cross-linked carboxyvinyl polymer. 6. A fourth structure represented by the following general formula [1]:
The prehair rinse-type hair treatment composition according to any one of claims (1) to (5), characterized in that it contains one or more kinds of secondary trimethylammonium-derived polypeptides. (In the formula, R ₁ is an amino acid constituting a polypeptide derived from collagen, and n is 3 to 20.)