JP5820671B2 - Pre-shampoo treatment composition - Google Patents

Description

  The present invention relates to a pre-shampoo treatment composition.

  Conventionally, pre-shampoo treatment compositions that treat hair before shampooing and impart a conditioning effect to the hair are known. For example, such a pre-shampoo treatment composition includes a cationic polymer and a cationized keratin compound derivative (Patent Document 1), an acid and a water-soluble polymer (Patent Document 2), and a betaine-type amphoteric. A substance containing a surfactant, a cationic polymer, silicone oil or the like (Patent Document 3) has been proposed.

  These pre-shampoo treatment compositions are primarily intended to prevent hair damage due to shampoo and to improve the feel after shampooing. However, these conventional pre-shampoo treatment compositions do not have sufficient effects on hair damage caused by chemical treatments such as hair color and perm and heat treatment such as hair irons in recent years. No technology has been known that satisfies the protection of the system at the same time. For this reason, the improvement effect of gloss, unity and fingering, and the sustainability of these effects were not satisfactory.

JP-A-57-88111 JP 60-48913 JP-A-2005-314359

  Therefore, the present invention achieves both the repair of the inside of the hair and the protection of the hair surface, and even for hair that has been severely damaged by chemical treatments such as hair color and perm, or heat treatment such as a hair iron, gloss, clumps and fingers. It is an object of the present invention to provide a pre-shampoo treatment composition that can improve streets and is excellent in the sustainability of these effects.

  In the present invention, repairing the inside of the hair refers to reducing voids generated inside the damaged hair, thereby reducing the dullness of the color of the hair and giving it a gloss, and softening the hair. Gender and firmness can be given to improve the unity.

  The present inventors have found that the above problem can be solved by using a specific cationic polymer having a high cation site ratio, a specific organic acid, and benzyl alcohol in combination. However, while these effects are highly exhibited when the pH is 5 or less, it is difficult to keep the system stable in the long term when the specific cationic polymer is blended at such a low pH. It has been found. Therefore, as a result of further intensive studies, the present inventors have found that a long-term stable agent can be produced by using Polyquaternium-37, which is another cationic polymer, as a thickener. It was.

The present invention provides a pre-shampoo treatment composition containing the following components (A) to (D), having a viscosity of 1,000 to 150,000 mPa · s and a pH of 2 to 5.
(A): a polymer or copolymer obtained by polymerizing a monomer component containing 70% by mass or more of diallyl quaternary ammonium salt in all monomers
(B): Polymethacryloyloxyethyltrimethylammonium chloride (INCI name: Polyquaternium-37)
(C): an organic acid selected from malic acid, glycolic acid, lactic acid and citric acid or a salt thereof
(D): Benzyl alcohol

  The present invention also provides a hair treatment method in which the above pre-shampoo treatment composition is applied to hair, rinsed with water, and then washed with the shampoo composition.

Furthermore, the present invention relates to the use of a composition containing the following components (A) to (D), having a viscosity of 1,000 to 150,000 mPa · s, and having a pH of 2 to 5 as a pre-shampoo treatment composition. It is to provide.
(A): a polymer or copolymer obtained by polymerizing a monomer component containing 70% by mass or more of diallyl quaternary ammonium salt in all monomers
(B): Polymethacryloyloxyethyltrimethylammonium chloride (INCI name: Polyquaternium-37)
(C): an organic acid selected from malic acid, glycolic acid, lactic acid and citric acid or a salt thereof
(D): Benzyl alcohol

  The pre-shampoo treatment composition of the present invention can improve the gloss, unity and fingering of the hair, and has a long-lasting effect.

[(A): a polymer or copolymer obtained by polymerizing a monomer component containing 70% by mass or more of diallyl quaternary ammonium salt in all monomers]
The polymer or copolymer of component (A) is a monomer component containing 70% by mass or more of diallyl quaternary ammonium salt monomer in the total monomer from the viewpoint of improving hair gloss, texture and fingering. It is necessary that the content is obtained by polymerizing and the content is preferably 80% by mass or more, and more preferably 90% by mass or more. The diallyl quaternary ammonium salt is preferably a diallyldimethyl quaternary ammonium salt from the viewpoint of easy availability of raw materials. When component (A) is a copolymer, the monomer other than diallyl quaternary ammonium salt may be any monomer that is copolymerizable with diallyl quaternary ammonium salt and is not particularly limited. And / or acrylamide is preferably included, and the content of the acrylic acid and / or acrylamide is less than 30% by mass, less than 20% by mass, and more preferably less than 20% by mass, based on the content of the diallyl quaternary ammonium salt. It is preferably less than 10% by mass.

  Two or more types of polymers or copolymers of component (A) may be used. For example, a polymer obtained by polymerizing a monomer component having a diallyl quaternary ammonium salt content of 90% by mass or more, or A copolymer and a polymer or copolymer obtained by polymerizing a monomer component having the content of 70% by mass or more and less than 90% by mass can be used in combination.

  The weight average molecular weight of the polymer or copolymer of component (A) is 50,000 to 700,000, more preferably 100,000 to 500,000 from the viewpoint that it is adsorbed to the hair and does not easily fall off during washing or rinsing. Further, it is preferably 140,000 to 200,000.

  Commercially available polymer or copolymer of component (A) is Merquat100 whose INCI name is polyquaternium-6 (content of diallyldimethyl quaternary ammonium salt in all monomers is 100% by mass), INCI name And polyquaternium-22, such as Merquat295 (the same content is 85 to 99% by mass), Merquat280 (the same content is 80% by mass) [Nalco Company].

  The content of the component (A) is preferably 0.001 to 5% by mass, more preferably 0.01 to 2% by mass, and further preferably 0.1 to 1% by mass in the pre-shampoo treatment composition from the viewpoint of the stability of the composition.

[(B): Polyquaternium-37]
The pre-shampoo treatment composition of the present invention increases the viscosity to an appropriate viscosity that does not spill when applied to the hair and achieves long-term stability without causing viscosity change or separation over time. It contains as component (B) polymethacryloyloxyethyltrimethylammonium chloride (INCI name: Polyquaternium-37). In a system containing component (A) and adjusted to a low pH, other conventional thickeners cannot be used for proper thickening, and even if thickened, separation and viscosity over time Although it causes a decrease, it can be prevented by containing the component (B). The weight average molecular weight of component (B) is preferably 500,000 to 2,000,000 from the viewpoint of ensuring stability.

  Commercially available components (B) include Synthalen CR (manufactured by 3V Group), Synthalen CN (manufactured by 3V Group), Synthalen CR (manufactured by 3V Group), Synthalen CU (manufactured by 3V Group), Syntran PC 5321 (manufactured by Interpolymer Corporation) Cosmedia Ultragel 300 (manufactured by Cognis GmbH), Kleasol 100XT (manufactured by Rheolabs Inc.), OriStar PQ37 (manufactured by Orient Stars LLC), and the like.

  Polyquaternium-37 as component (B) may be used in combination of two or more thereof, and the content thereof is increased from the viewpoint of increasing the viscosity to a suitable viscosity range and excellent long-term stability. 0.1-15 mass% in a shampoo treatment composition, Furthermore, 0.5-10 mass%, Furthermore, 1-5 mass% is preferable.

  The mass ratio (A) / (B) of the component (A) to the component (B) is from 0.00007 to 10, more preferably from 0.001 to 4, and more preferably from 0.02 to 1 from the viewpoint of adjusting the viscosity and effect required at the time of use. Further, 0.05 to 0.7, further 0.07 to 0.5, further 0.1 to 0.4, and further 0.23 to 0.4 are preferable.

[(C): an organic acid selected from malic acid, glycolic acid, lactic acid and citric acid or a salt thereof]
In the present invention, an organic acid selected from malic acid, glycolic acid, lactic acid and citric acid or a salt thereof is used as component (C). These organic acids are excellent in the effect of repairing damaged hair as compared with other organic acids, and malic acid is particularly preferable.

  Component (C) can be used alone or in combination of two or more. The content of the component (C) is preferably from 0.1 to 20% by mass, more preferably from 0.5 to 15% by mass, and further preferably from 1 to 10% by mass in the pre-shampoo treatment composition from the viewpoint of the internal repair effect of the hair.

[(D): benzyl alcohol]

In the present invention, benzyl alcohol is used as component (D). The content of the component (D) is preferably from 0.1 to 20% by mass, more preferably from 0.5 to 15% by mass, and further preferably from 1 to 10% by mass in the pre-shampoo treatment composition from the viewpoint of the internal repair effect of the hair.

〔viscosity〕
The viscosity of the pre-shampoo treatment composition of the present invention is required to be 1000 to 150,000 mPa · s in order to be easily adapted to hair during use and to maintain a viscosity that does not drip for a long period of time. 2,000 to 100,000 mPa · s, more preferably 3000 to 50,000 mPa · s. Here, the viscosity is a value obtained by rotating at 6 ° C. for 1 minute using a rotor No. 1 to 4 with a B-type rotational viscometer (TV-10M viscometer, manufactured by Toki Sangyo Co., Ltd.) at 25 ° C. It is.

[PH]
The pre-shampoo treatment composition of the present invention requires a pH of 2 to 5 from the viewpoint of improving the gloss and unity of the hair, but the pH is 2.5 to 4, more preferably 2.7 to 3.5. preferable. Here, the pH of the pre-shampoo treatment composition of the present invention is a value measured at 25 ° C.

  In order to adjust the pre-shampoo treatment composition of the present invention to the pH as described above, in addition to the organic acid of component (C) or a salt thereof, an organic acid other than component (C), monoethanolamine, sodium hydroxide, A pH adjuster such as potassium hydroxide can be used.

[(E): Amino-modified silicone and / or dimethylpolysiloxane having a number average polymerization degree of 1000 or more]

  The pre-shampoo treatment composition of the present invention preferably further contains amino-modified silicone and / or dimethylpolysiloxane having a number average degree of polymerization of 1000 or more as component (E).

  The amino-modified silicone may have an amino group or an ammonium group, and may be either an amino-modified silicone oil in which all or part of the terminal hydroxyl groups are blocked with a methyl group or the like, or amodimethicone in which the terminals are not blocked. And those represented by the following general formula (1) or (2).

[Wherein R ¹ represents Si (CH ₃ ) ₃ or a hydrogen atom, R ² represents an alkylene group having 2 to 8 carbon atoms, n represents a number from 1 to 20000, and m represents a number from 1 to 2000. A represents a number from 0 to 3. ]
The content (nitrogen content) of nitrogen atoms contained in one molecule of amino-modified silicone is preferably 0.02 to 4% by mass, more preferably 0.1 to 1% by mass.

Commercially available amino-modified silicones include SF8451C (Toray Dow Corning, viscosity 600mm ² / s, nitrogen content 0.8% by mass), SF8452C (Toray Dow Corning, viscosity 700mm ² / s, nitrogen content 0.2% by mass) , SF8457C (Toray Dow Corning, viscosity 1200mm ² / s, nitrogen content 0.8% by mass), KF8003 (Shin-Etsu Chemical Co., Ltd., viscosity 1850mm ² / s, nitrogen content 0.7% by mass), KF8005 (Shin-Etsu Chemical Co., viscosity) 1200mm ² / s, nitrogen content 0.1% by mass), KF867 (Shin-Etsu Chemical Co., Ltd., viscosity 1300mm ² / s, nitrogen content 0.8% by mass), KF8012 (Shin-Etsu Chemical Co., Ltd., viscosity 90mm ² / s, nitrogen content 0.6% by mass) ), Etc., SM8704C (Toray Dow Corning, nitrogen content 0.8% by mass), SM8904C (Toray Dow Corning, nitrogen content 0.3% by mass), BY22-079 (Toray Dow Corning, nitrogen) Amodimethicone emulsion with a content of 0.6% by mass) I can get lost. Also, CF1046 (Toray Dow Corning, Nitrogen), which is a mixture of dimethylpolysiloxane (number average degree of polymerization 550), dimethylpolysiloxane (number average degree of polymerization 2700) and amino-modified silicone (mass ratio 10: 3.7: 2.9) A content of 0.14% by mass) can also be suitably used.

  As the dimethylpolysiloxane having a number average degree of polymerization of 1000 or more, the number average degree of polymerization is 1500 or more, more preferably 2000 or more and 20000, from the viewpoint of having a smooth feeling at the time of shampoo rinsing and dryness. Those less than are preferred.

  Commercially available dimethylpolysiloxanes with a number average degree of polymerization of 1000 or more include SH200-1,000,000cs (Toray Dow Corning), BY11-026 (Toray Dow Corning; diluted solution of highly polymerized silicone with low viscosity silicone ), BY11-039 (Toray Dow Corning; diluted solution of highly polymerized silicone with low viscosity silicone), KF9008 (Shin-Etsu Chemical; diluted solution of highly polymerized silicone with cyclic silicone), BY22-050A (Toray Dow Corning) Company; Cationic emulsion of highly polymerized silicone), BY22-060 (Toray Dow Corning Co., Ltd .; Cationic emulsion of solution obtained by diluting highly polymerized silicone with low viscosity silicone), BY22-020 (Toray Dow Corning Co .; Cationic emulsion of solution diluted with liquid paraffin), KM904 (Shin-Etsu Chemical Co., Ltd.) And a cationic emulsion of a solution diluted with a low-viscosity silicone).

  In the component (E), it is preferable to use a combination of the above amino-modified silicone and a dimethylpolysiloxane having a number average polymerization degree of 1000 or more, and these ratios (mass ratios) are adsorbed on the hair and difficult to fall off. In view of the above, 0.1: 10 to 10: 0.1, more preferably 0.5: 5 to 5: 0.5, and even more preferably 1: 3 to 3: 1.

  In the component (E), the amino-modified silicone and the dimethylpolysiloxane having a number average polymerization degree of 1000 or more may be blended as a silicone oil obtained by mixing both in advance from the viewpoint of improving the adsorptivity to hair. preferable. In this case, in order to improve compatibility of both, the silicone oil can be further improved in adsorbability to the hair by mixing other silicones.

  The content of the component (E) is 0.01 to 10 mass in the pre-shampoo treatment composition from the viewpoint of suppressing the stickiness of the hair after the treatment while improving the glossiness, unity, and finger sustainability of the hair. %, More preferably 0.05 to 5% by mass, and further preferably 0.1 to 3% by mass.

[Dyes or pigments for product coloring]
The pre-shampoo treatment composition of the present invention preferably does not contain a hair coloring dye or pigment, but for the purpose of coloring the product, it can contain a dye or pigment in an amount that does not color the hair. In this case, the content of the dye or pigment is preferably 0.000001 to 0.1% by mass, more preferably 0.00001 to 0.01% by mass, and further preferably 0.0001 to 0.001% by mass in the pre-shampoo treatment composition.

〔solvent〕
The pre-shampoo treatment composition of the present invention preferably contains water and / or a water-soluble organic solvent as a solvent from the viewpoint of adjusting the viscosity to be easily applied. Examples of the water-soluble organic solvent include ethanol, glycerin, propylene glycol, polypropylene glycol, dipropylene glycol, and polyethylene glycol. These contents are preferably 10 to 98% by mass, more preferably 40 to 97% by mass, and further 60 to 96% by mass in the pre-shampoo treatment composition from the viewpoint of producing an agent having a stable viscosity for a long period of time. Is preferred.

[Other optional ingredients]
In the pre-shampoo treatment composition of the present invention, in addition to the above components, components used in normal hair cosmetics can be appropriately blended depending on the purpose. Examples of such components include surfactants, antidandruff agents, vitamins, bactericides, anti-inflammatory agents, antiseptics, chelating agents, humectants such as sorbitol and panthenol, hydroxyethylcellulose, methylcellulose, polyethylene glycol, clay Viscosity modifiers other than minerals and other components (B); plant extracts; pearlizing agents; fragrances; antioxidants; other described in ENCYCLOPEDIA OF SHAMPOO INGREDIENTS (MICELLE PRESS) And the like.

[Hair treatment method]
Treatment of hair using the pre-shampoo treatment composition of the present invention is preferably performed as follows.

  The hair to be treated is the hair before washing with the shampoo composition, and the pre-shampoo treatment composition-to-hair bath ratio (pre-shampoo treatment composition / hair (dry weight)) From the viewpoint of being easy to spread evenly and preventing the pre-shampoo treatment composition from dripping after application, 0.01 / 1 to 3/1, further 0.1 / 1 to 2/1, and further 0.5 / 1. ~ 1/1 is preferred.

  After the pre-shampoo treatment composition is applied to the hair, it is preferably left for 30 seconds to 60 minutes, more preferably 5 to 60 minutes, and further 10 to 10 minutes in order to allow the components (C) and (D) to penetrate into the hair. It is more preferable to leave it for 60 minutes. Thereafter, it is preferred to rinse with water and then wash the hair with a shampoo composition. Here, the shampoo composition preferably contains an anionic surfactant capable of forming a complex with the cationic polymer previously attached to the hair by treatment with the pre-shampoo treatment composition. Sustainability such as fingering can be improved. As such a shampoo composition, a general aqueous shampoo containing about 5 to 20% by mass of an anionic surfactant such as sodium laureth-1 sulfate, sodium laureth-2 sulfate or sodium laureth-3 sulfate is suitable. . The pH of the shampoo composition is preferably 2-5.

[Hair treatment kit]
The pre-shampoo treatment composition of the present invention can be provided in the form of a hair treatment kit together with the shampoo composition and a container containing each of them. The shampoo composition preferably contains an anionic surfactant as described above, and preferably has a pH of 2-5. Such a hair treatment kit may further include a hair cosmetic, such as a hair rinse, a hair conditioner, a hair treatment, and a container containing the hair, and a hair treatment that does not wash away. The container may be provided with a contained container.

Examples 1-9 and Comparative Examples 1-7
Pre-shampoo treatment compositions shown in Tables 1 and 2 were prepared, and performance evaluation was performed according to the following methods and criteria. These results are shown in Tables 1 and 2 together.

[1] Evaluation method for “gloss, unity, fingering, and their sustainability” 1) Evaluation hair bundle 30% long, 6cm wide, 10g weight Japanese female black hair bundle 3 times perm treatment (Dariya, Benezel Hyper Straight Perm), then 5 bleach treatments (Kao Corp., PRETTIA Soft Bubble Bleach Hybrid), then shampoo (Kao Corp., Essential Damage Care Nuance Airy Shampoo) and dryer The drying by was repeated 90 times to obtain an evaluation hair bundle.

2) Hair treatment 10 g of the pre-shampoo treatment composition shown in Table 1 or 2 was applied to the evaluation hair bundle that had been sufficiently dried using a drier, left for 5 minutes, and then rinsed with water. Next, the evaluation hair bundle was washed with 2 g of a shampoo containing an anionic surfactant (manufactured by Kao Corporation, Essential Damage Care Nuance Airy Shampoo), and then rinsed with water. Further, 2 g of a conditioner (manufactured by Kao Corporation, Essential Damage Care Nuance Airy Conditioner) was applied, rinsed with water, and the evaluation hair bundle was dried using a dryer.

3) Performance evaluation method After this series of processing was completed, evaluation was performed according to the following criteria. The evaluation was performed by 10 expert panelists based on the following criteria, and a total score of 10 persons was calculated.

<Glossy>
5 points: Judge that gloss is good 4 points: Judge that gloss is slightly good 3 points: Judge that gloss is neither way 2 points: Judge that gloss is slightly bad 1 point: Judge that gloss is bad

<Mass of hair>
5 points: Judged that the unity is good 4 points: Judged that the unity is somewhat good 3 points: Judged that the unity is neither 2 points: Judged that the unity is somewhat bad 1 point: Judged that the unity is poor

<Fingering>
5 points: Judge that the finger is good 4 points: Judge that the finger is slightly good 3 points: Judge that the finger is not good 2 points: Judge that the finger is slightly bad 1 Point: Judge that the finger is bad

<Sustainability>
For the hair that has undergone the above series of treatments, the treatment was repeated in the following steps, and the number of times until it reached the same level as untreated hair was evaluated by 10 expert panelists, and the average value of the number of times was calculated .
(1) Rinsing with water
(2) Shampoo (Made in Kao, Essential Damage Care Nuance Airy Shampoo, 2g)
(3) Rinsing with water
(4) Conditioner (Made by Kao, Essential Damage Care Nuance Airy Conditioner, 2g)
(5) Water rinse
(6) Dryer drying

[2] Evaluation Method of “Appearance Stability and Viscosity Stability” 1) Appearance Stabilization After preparing the pre-shampoo treatment compositions (100 g) shown in Tables 1 and 2, they were stored at 50 ° C. for 1 month, and then stored. The appearance was evaluated as ◯: not separated (precipitated), Δ: slightly separated (precipitated), and x: separated.

2) Viscosity stability After preparing the pre-shampoo treatment compositions (100 g) of Tables 1 and 2, they were put in a glass bottle and the viscosity was measured (immediately after viscosity). Then, it stood still for one month at 50 degreeC, the subsequent viscosity was measured, and it compared with the viscosity immediately after. As a viscosity measurement method, after adjusting the sample temperature to 25 ° C., after rotating for 1 minute at 6 rpm using a rotor No. 4 with a B-type rotational viscometer (TV-10M, manufactured by Toki Sangyo Co., Ltd.) The value was recorded.

Comparative Example 8
Hair treatments shown in Table 2 were prepared, and performance evaluation was performed according to the following methods and standards. These results are also shown in Table 2.

[1] Evaluation method of “gloss, unity, fingering, and sustainability thereof” Using the same evaluation hair bundle as described above, hair treatment was performed according to the following procedure, and then evaluated according to the above-mentioned criteria. .
(Hair treatment)
The evaluation hair bundle was rinsed with water, the evaluation hair bundle was washed with 2 g of a shampoo containing an anionic surfactant (manufactured by Kao Corporation: Essential Damage Care Nuance Airy Shampoo), and then rinsed with water. Next, 10 g of the treatment in Table 2 was applied to the evaluation hair bundle, left for 30 minutes, and then rinsed with water. Further, 0.2 g of a conditioner (manufactured by Kao: Essential Damage Care Nuance Airy Conditioner) was applied, rinsed with water, and the evaluation hair bundle was dried using a dryer.

[2] Evaluation Method of “Appearance Stability and Viscosity Stability” Appearance stability and viscosity stability were evaluated in the same manner as described above.

* 1: Marcote 100 (Nalco company)
* 2: Marcote 280 (Nalco company)
* 3: Marcote 550 (Nalco company)
* 4: Cosmedia Ultragel300 (Cognis GmbH, Polyquaternium-37)
* 5: The system could not be uniformly dispersed and could not be evaluated.

Claims (8)

A pre-shampoo treatment composition containing the following components (A) to (D), having a viscosity of 1,000 to 150,000 mPa · s and a pH of 2 to 5.
(A): a polymer or copolymer obtained by polymerizing a monomer component containing 70% by mass or more of diallyl quaternary ammonium salt in all monomers
(B): Polymethacryloyloxyethyltrimethylammonium chloride (INCI name: Polyquaternium-37)
(C): an organic acid selected from malic acid, glycolic acid, lactic acid and citric acid or a salt thereof
(D): Benzyl alcohol Furthermore, the pre-shampoo treatment composition of Claim 1 containing the following component (E).
(E): Amino-modified silicone and / or dimethylpolysiloxane having a number average degree of polymerization of 1000 or more   The pre-shampoo treatment composition according to claim 1 or 2, wherein the mass ratio (A) / (B) of the component (A) to the component (B) is from 0.00007 to 10.   A hair treatment method in which the pre-shampoo treatment composition according to any one of claims 1 to 3 is applied to hair, rinsed with water, and then washed with the shampoo composition.   The hair treatment method according to claim 4, wherein the shampoo composition contains an anionic surfactant.   The hair treatment method according to claim 4 or 5, wherein the pre-shampoo treatment composition is applied to the hair and then left for 30 seconds to 60 minutes before being rinsed with water.   The hair treatment method according to any one of claims 4 to 6, wherein after the hair is washed with the shampoo composition, it is further treated with one or more hair rinses, hair conditioners, and hair treatments that are used after being washed away. Use of a composition containing the following components (A) to (D), having a viscosity of 1,000 to 150,000 mPa · s, and having a pH of 2 to 5 as a pre-shampoo treatment composition.
(A): a polymer or copolymer obtained by polymerizing a monomer component containing 70% by mass or more of diallyl quaternary ammonium salt in all monomers
(B): Polymethacryloyloxyethyltrimethylammonium chloride (INCI name: Polyquaternium-37)
(C): an organic acid selected from malic acid, glycolic acid, lactic acid and citric acid or a salt thereof
(D): Benzyl alcohol