JP5243024B2 - Hair cosmetics - Google Patents

Description

  The present invention relates to a hair cosmetic, and more specifically, by blending acetylcysteine and a specific silicone block copolymer, the hair feels straight and the flow of hair is uniform (straight feeling). The present invention relates to a hair cosmetic that is excellent in the imparting effect, has an effect of preventing hair damage, and is excellent in the effect of making the hair smooth and easy to bundle.

  Hair that is smooth and glossy with a smooth and smooth hair flow is a typical condition for beautiful hair. However, hair is subject to a considerable amount of damage such as fading, crunchiness, split ends, and cut hairs by being exposed to sunlight and the air on a daily basis or by being exposed to hot air from a dryer.

  In order to make hair look beautiful, straight perms are known that align the flow of hair and make it straight, but straight perms are similar to regular permanent waves and hair dyes, although the hair itself is straight. Is applied to the hair for a certain period of time and subjected to chemical treatment, which actually damages the hair more. In damaged hair, the cuticle and keratin fibers in the hair are damaged, and melanin pigments, pigments derived from hair dyes, lipids and other components in the hair are likely to elute. If the damaged hair is left as it is, the hair damage further proceeds.

  Conventionally, various attempts have been made to prevent and protect hair damage in hair compositions. For example, water-soluble polymers, protein derivatives, silicones, plant extracts, and the like have been blended for the purpose of protecting hair and preventing elution of components in the hair (see, for example, Patent Documents 1 to 5). Moreover, in order to protect the hair damage by sun exposure, the ultraviolet absorber has been mix | blended (for example, refer patent document 6).

  However, when a water-soluble polymer, protein derivative, or the like is blended, there is a demerit such as causing dandruff flaking on the hair if a large amount of these components is blended in order to bring out a sufficient effect. In addition, these components were not sufficient in preventing hair damage. Further, when an ultraviolet absorber is blended, it has an effect of preventing hair from fading due to exposure to sunlight, but if a large amount of the component is blended to bring out a sufficient effect, the stability of the product may be impaired.

  On the other hand, thiol compounds such as acetylcysteine have been conventionally used as a reducing agent blended with permanent wave and straight permanent agents (see, for example, Patent Documents 7 and 8).

  It has been reported that the effect of suppressing hair damage can be obtained by combining this thiol compound and silicone, and further an ultraviolet absorber. For example, hair cosmetics using amino-modified silicone and N-acetylcysteine are disclosed. It is disclosed (see Patent Document 9).

  However, such amino-modified silicones having no polyoxyalkylene block have not been satisfactory in terms of imparting a straight feeling, preventing damage to hair, and smoothness.

JP-A-6-92824 Japanese Unexamined Patent Publication No. 7-69844 JP-A-8-48698 Japanese Patent Laid-Open No. 9-71516 JP-A-8-231348 JP-A-7-228510 JP-A-8-269003 Japanese Patent Laid-Open No. 5-39211 JP 7-138132 A

  Therefore, without applying chemical treatment such as straight perm that can cause damage, it is possible to give a feeling (straightness) that the hair with wrinkles and waviness becomes straight and the flow of hair is even. In addition, development of a hair cosmetic excellent in the effect of preventing damage to the hair and making the hair smooth and easy to bundle is desired, and it is an object of the present invention to provide such a hair cosmetic. is there.

  In view of this situation, the present inventors have conducted extensive research to solve the above problems, and as a result, by using acetylcysteine in combination with a specific amount and a specific silicone block copolymer, Although there is no effect of chemically changing hair straight, hair damage is imparted while giving a feeling that hairs with wrinkles and undulation become straight and the flow of hair is aligned (hereinafter referred to as “straightness”). It was found that a hair cosmetic excellent in the effect of protecting the hair and excellent in the effect of making the hair smooth and easy to bundle was obtained, and the present invention was completed based on this finding.

That is, the present invention comprises the following components (a) and (b):
(A) Acetylcysteine 0.05-1.0 mass%
(B) The following formula:
[Wherein, R ¹ independently of each other represents a monovalent hydrocarbon group, a hydroxyl group or an alkoxy group free of aliphatic unsaturation, and X ¹ represents a general formula: —R ³ —Z ¹ (where, R ³ represents a direct bond or a divalent hydrocarbon group having 1 to 20 carbon atoms, Z ¹ represents an amino group-containing group or an ammonium group-containing group), and R ² represents Independently of each other, R ¹
Or X is ^one , n is an integer of 2 to 4, a is an integer of at least 1 or more, c is an integer of at least 2 or more, d is an integer of at least 2 or more, b × d is at least 1 or more and Y is bonded to an adjacent silicon atom by carbon-silicon and to a polyoxyalkylene block by an oxygen atom.
The average molecular weight of each siloxane block is from about 250 to about 1,000.
The average molecular weight of each polyoxyalkylene block is about 200 to
About 10,000 and the siloxane block is about 25 to about 95 weight percent of the copolymer.
And the block copolymer has an average molecular weight of at least about 5,000]
It is a hair cosmetic characterized by mix | blending the silicone type block copolymer represented by these.

  The hair cosmetic composition of the present invention is excellent in the effect of preventing hair damage while imparting a straight feeling to the hair, and is excellent in the effect of making the hair smooth and easy to bundle.

The configuration of the present invention will be described below.
The component (a) acetylcysteine used in the present invention is a reducing agent that is generally blended as an active ingredient in permanent wave agents and straight permanent agents. It cuts disulfide bonds in hair and straightens hair with wrinkles and undulations. It is a component that can be made.

  The amount of component (a) acetylcysteine used in the present invention is 0.05 to 1.0% by mass (hereinafter, simply referred to as “%”) in the hair cosmetic composition, and is 0.1 to 0. 5% is more preferable. Within this range, the effect of making the hair feel smooth and smooth without feeling irritation and hair damage as with normal perm is obtained. And by using repeatedly repeatedly, a further effect is acquired.

  On the other hand, the specific silicone type block copolymer into which the functional group having the reactivity of the component (b) used in the present invention is introduced is represented by the following formula.

In the above formula, R ¹ is independently of each other a monovalent hydrocarbon group, hydroxyl group or alkoxy group not containing aliphatic unsaturation, and among these, as a monovalent hydrocarbon group not containing aliphatic unsaturation Is, for example, a methyl group, an ethyl group, a propyl group, a butyl group, an octyl group, a dodecyl group, a phenyl group, a phenethyl group, etc., with a methyl group and a phenyl group being particularly preferred. The alkoxy group has 1 carbon atom such as methoxy group, ethoxy group, propoxy group, butoxy group, isopropenyloxy group, methoxyethoxy group, phenyloxy group, acetoxy group, cyclohexyloxy group, and dodecanyloxy group. ~ 12, preferably an alkoxy group having 1 to 8 carbon atoms, more preferably an alkoxy group having 1 to 6 carbon atoms, particularly a methoxy group or an ethoxy group.

X ¹ is a general formula:
-R ³ -Z ¹
(R ³ represents a direct bond or a divalent hydrocarbon group having 1 to 20 carbon atoms, and Z ¹ represents an amino group-containing group or an ammonium group-containing group). Among these, specific examples of ^{R 3} groups, for example, _{-CH 2 -, - CH 2 CH} 2 -, - CH 2 CH 2 CH 2 -, - CH (CH 3) CH 2 -, - (CH 2) 4 _{-, - (CH 2) 6} -, - (CH 2) 8 -, - CH 2 CH 2 C 6 H 4 -, - (CH 2) 12 -, - (CH 2) 16 - and is, preferably propylene It is a group. Specific examples of the X ¹ group include, for example, — (CH ₂ ) ₃ NH ₂ , — (CH ₂ ) ₃ NH (CH ₂ ) ₂ NH ₂ , — (CH ₂ ) ₃ N (CH ₃ ) ₂ , — (CH ₂ ) ₃ N (CH ₃ ) (CH ₂ ) ₂ N (CH ₃ ) ₂ , — (CH ₂ ) ₃ N ⁺ (CH ₃ ) ₃ Cl ⁻ , — (CH ₂ ) ₃ N (CH ₃ ) ( CH ₂ ) ₂ N (CH ₃ ) C═O (CH ₃ ) and the like.

R ² is independently of each other and represents either R ¹ or X ¹ , n is an integer of 2 to 4, a is an integer of at least 1 and c is an integer of at least 2 , D is an integer of at least 2, and b × d is at least 1.

Further, examples of the divalent organic group represented by Y groups ^{-R 4 -, - R 4 -CO} -, - R 4 -NHCO -, - R 4 -NHCONHR 5 -NHCO- or ^-R 4 -OOCNH —R ⁵ —NHCO— (wherein R ⁴ is a divalent alkylene group such as ethylene group, propylene group, butylene group, etc., and R ⁵ is a divalent alkylene group such as those exemplified as R ⁴ or 2 valent arylene group, _{e.g., -C 6 H 4 -, -} C 6 H 4 -C 6 H 4 -, - C 6 H 4 -CH 2 -C 6 H 4 -, - C 6 H 4 -CH (CH _{3) -C} 6 _{H 4} - is a, and the like). Suitable examples of the Y group are: _{, - - -CH 2 CH 2 CH} 2 CH 2 CH 2 -, - CH 2 CH (CH 3) CH 2 -, - (CH 2) 4 -, - (CH 2) 2 CO -, - (CH 2) _{3 NHCO -, - (CH 2} ) 3 NHCONHC 6 H 4 CO- or _{- (CH 2) 3 -OOCNHC 6} H 4 NHCO-. Particularly preferred groups Y are divalent alkylene groups, —CH ₂ CH ₂ —, —CH ₂ CH ₂ CH ₂ —, —CH ₂ CH (CH ₃ ) CH ₂ —, etc., but —CH ₂ CH (CH ₃ ) CH ₂ - is most preferred.

  The following formula can be illustrated as a preferable specific example of the silicone block copolymer of the component (b) of the present invention.

  In the above formula, e is an integer of 1 to 600, f is a number of 0.1 to 20, g and h are each an integer of 1 to 60, i is an integer of 2 to 50, and f × i is at least 1 or more It is.

  Furthermore, another specific example of the silicone-based block copolymer that is the component (b) of the present invention includes, for example, those represented by the following formulae.

  In addition, the molecular weight of the silicone block copolymer as the component (b) of the present invention is 5,000 to 2,000,000, preferably 10,000 to 1,500,000, more preferably 20,000 to 1,000,000. If it is 5,000 or less, the effect of imparting a straight feeling and smoothness to the hair cannot be obtained sufficiently. Examples of commercially available silicone block copolymers used in the present invention include SILSTLE 401 (manufactured by Toray Dow Corning Silicone (former name: Nihon Unicar)).

  Moreover, the compounding quantity of the component (b) in the hair cosmetics of this invention is although it does not specifically limit, Preferably it is 0.01-20% as a pure part, Most preferably, it is 0.1-10%. Within this range, when used in combination with component (a), there is no unpleasant feel such as stickiness or oiliness, and the effect of imparting a straight feeling and the effect of preventing hair damage is excellent, smooth and smooth. Thus, a good product excellent in the effect of making hair easy to bundle is obtained.

  In addition to the above essential components (a) and (b), the hair cosmetic composition of the present invention has an anionic surfactant, a cationic interface in a quantitative and qualitative range that does not impair the effects of the present invention depending on the purpose. Surfactants such as surfactants, amphoteric surfactants and nonionic surfactants, oils such as ester oils, higher fatty acids, higher alcohols, hydrocarbons, oils and fats, silicones other than component (b), high natural water solubility For molecules, water-soluble polymers such as semi-synthetic water-soluble polymers and synthetic water-soluble polymers, aqueous components such as polyhydric alcohols, saccharides and lower alcohols, amino acids, amino acid derivatives, peptides, peptide derivatives, plant extracts, etc. Cosmetic ingredients, metal chelating agents such as edetate, pH adjusters such as citric acid, lactic acid, phosphoric acid or their salts, fragrances, preservatives, bactericides, ultraviolet absorbers, antioxidants, dyes, pigments, etc. hair In the cosmetic or cosmetics in general it can be compounded other components are widely used.

  In addition, the method for producing the hair cosmetic composition of the present invention is not particularly limited and can be produced by a conventional method. Depending on the combination with other components and the mechanism of the container, the liquid cosmetic, the emulsion, the cream, the gel, the mist It can be carried out in various forms such as foam (foam). More specifically, it can be used as a shampoo, hair rinse, hair treatment, hair pack, hair lotion, hair cream, hair gel, etc., as well as an aerosol container with a propellant such as liquefied petroleum gas, dimethyl ether, nitrogen gas, carbon dioxide gas, etc. It can also be used as aerosol products such as hair sprays and hair foams (hair mousses). As a method of use, any method such as a method of washing after applying to hair or a method of applying to dry hair can be applied, but a hair lotion, hair cream, hair gel, hair foam (hair mousse), etc. that does not wash away. Cosmetics are preferable because the effects are more obvious.

  The hair cosmetic composition of the present invention thus obtained is excellent in the effect of preventing hair damage while imparting a straight feeling, and is excellent in the effect of making hair smooth and easy to bundle. Such an effect becomes higher by repeatedly using the hair cosmetic composition of the present invention, and is maintained for a long time. The period of continuous use varies depending on the composition, dosage form, amount used, and hair quality to be applied, but in the case of a type of washing out such as shampoo, it is preferable to use it once a day for 2 weeks or more. In the case of a type that does not wash away such as lotion, it is preferable to use it once a day for 1 week or more. Further, it is more preferable to use a type that is washed away and a type that is not washed away.

  The following examples further illustrate the present invention. In addition, these do not limit this invention at all.

Examples 1 to 5 and Comparative Examples 1 to 4 Hairdressing materials Hairdressing materials were prepared according to the composition shown in Table 1 and the following production method.
About each sample of the obtained hair dressing, the following evaluation method 1 evaluated (b) the effect of imparting a straight feeling, (b) the effect of preventing damage to hair, (c) smoothness, and (d) goodness of unity. The results are also shown in Table 1.

(Composition and results)

(Production method)
A. Components (1) to (5) are dissolved by heating.
B. Components (9) to (12) are dissolved by heating.
C. A is added to B and uniformly emulsified and mixed, and then components (6) to (8) are added after cooling.
D. C was filled into a container to obtain a hair styling material.

(Evaluation method 1)
<Evaluation of straightening effect, hair damage prevention effect, elasticity, stiffness imparting effect, and cohesiveness>
What is the hair on the left half of the hair after washing the hair with a commercially available shampoo and wiping off moisture with a commercial shampoo for 20 Japanese female panels in the twenties who have not been treated with chemicals such as cold perm and bleach? (Blank), apply 2 g of each sample of Examples 1 to 5 and Comparative Examples 1 to 4 to the right half of the hair, and then dry with a drier while combing with a comb for 1 minute I was asked to. The procedure from shampooing to drying is performed once a day for 5 days. (B) The effect of imparting a straight feeling, (b) The effect of preventing damage to hair, (c) Smoothness, (d) The goodness of unity Compared with half hair (blank), it evaluated using the following evaluation criteria. This was also performed for other samples, and the average score of each panel was determined according to the following criteria.

  As is apparent from the results in Table 1, all of the hairdressing materials of the present invention are superior in the effect of imparting a straight feeling as compared with those of Comparative Examples 1 to 4, and prevent hair damage. It can be seen that it is excellent in effect, glossy, smooth and smooth hair.

(Evaluation method 2)
About the said Example 1, the provision effect of a straight feeling and the goodness of unity were evaluated further. Wash with a commercially available shampoo using 2 bundles of hair of about 30 cm and 10 g of hair of a Japanese woman with a hair that is not treated with chemical treatment such as cold perm or bleach. After wiping, one bundle was used as a blank, and 2 g of the sample of Example 1 was applied to the other hair bundle. Thereafter, both hair bundles were dried with a drier while combing with a comb for 1 minute. This process from shampoo to drying was repeated 5 times.
The effect of imparting a straight feeling and the feeling of unity were evaluated visually. The state of the hair bundle before the treatment and the state of the hair bundle after the sample is repeatedly applied and treated are shown in FIG.

  As is clear from FIG. 1, the hair styling material of Example 1 is superior to the blank, and clearly uses this to provide an effect of imparting a straight feeling, less spread of hair bundles, and better unity. I understand.

Example 6 Shampoo A shampoo was prepared by the following composition and production method.

(Production method)
A. Ingredients (1) to (15) are mixed uniformly.
B. A was filled into a container to obtain a shampoo.

  The shampoo of Example 6 was an excellent shampoo that was excellent in the effect of preventing damage to hair, had a good straight feeling, and a smooth and smooth hair.

Example 7 Hair Treatment Lotion A hair treatment lotion was prepared by the following composition and production method.

(Production method)
A. Components (1) to (6) and (14) are mixed and dissolved.
B. Components (7) to (13) are mixed and dissolved.
C. Add B to A and mix uniformly.
D. C was filled into a mist dispenser container to obtain a hair treatment lotion.

  The hair treatment lotion of Example 7 obtained as described above is a mist-like hair that can be used well on the hair, has an excellent effect of preventing damage to the hair, has a good straightness, is glossy and has a smooth texture. It had an excellent effect as a hair treatment lotion. Moreover, by using it every day, a more straight feeling was felt.

Example 8 Hair Conditioner A hair conditioner was prepared with the composition and production method shown below.

(Production method)
A. Components (2) to (8) are dissolved by heating.
B. A part of the components (9) to (11) and (15) is dissolved by heating.
C. A is added to B and uniformly emulsified and mixed, and after cooling, (13) dissolved in the remainder of components (1), (12), (14), and (15) is added.
D. C was filled into a container to obtain a hair conditioner.

  The hair conditioner of Example 8 has an excellent effect as a hair conditioner that has an excellent effect of protecting hair damage, an excellent effect of imparting a straight feeling, and a high effect of making the hair smooth and coherent. Met. Moreover, it was a favorable thing which can feel a more straight feeling by using it every day.

Example 9 Hair gel A hair gel was prepared by the following composition and production method.

(Production method)
A. Components (1), (2), and (6) are uniformly mixed with a part of component (13).
B. Ingredients (3) and (4) are mixed uniformly into a part of ingredient (13).
C. Components (7) to (10) are mixed and dissolved.
D. A part of components (5) and (13) are mixed and dissolved.
E. A, B, and C are mixed and dissolved, and D is added.
F. (11) and (12) dissolved in the remainder of (13) are added to E and mixed.
G. F was filled into a container to obtain a hair gel.

  The hair gel of Example 9 was excellent in the effect of preventing hair damage in addition to the hair styling ability as a hair gel, and had an excellent effect of making the hair smooth and coherent with an excellent feeling of straightness.

  ADVANTAGE OF THE INVENTION According to this invention, it can be set as the hair cosmetics excellent in the effect which is excellent in the effect which protects hair damage, providing the feeling of straightness, and making it smooth and easy to unite.

FIG. 1 is a photograph comparing the state of the hair bundle before and after the treatment with the hair styling material produced in Example 1 with an untreated hair bundle (blank).

Claims (2)

The following components (a) and (b);
(A) Acetylcysteine 0.05-1.0 mass%
(B) The following formula:

[Wherein, R ¹ independently of each other represents a monovalent hydrocarbon group, a hydroxyl group or an alkoxy group free of aliphatic unsaturation; X ¹ represents a general formula: —R ³ —Z ¹ (where R ³ Represents a direct bond or a divalent hydrocarbon group having 1 to 20 carbon atoms, Z ¹ represents an amino group-containing group or an ammonium group-containing group, and R ² independently of each other, Represents either R ¹ or X ¹ , n is an integer of 2 to 4, a is an integer of at least 1 or more, c is an integer of at least 2 or more, d is an integer of at least 2 or more , B × d is at least 1 or more, Y represents a divalent organic group bonded to the adjacent silicon atom by carbon-silicon and to the polyoxyalkylene block by an oxygen atom, and the average molecular weight of each siloxane block is 250 ~ 1,000,00 0, the average molecular weight of each polyoxyalkylene block is 200-10,000, the siloxane block comprises 25-95% by weight of the copolymer, and the block copolymer has an average molecular weight of at least 5,000. Have]
0.01-20% by mass of a silicone-based block copolymer represented by
Hair cosmetics ( except for those containing cationized cellulose and hydroxyethyl cellulose ).   The hair cosmetic according to claim 1, which does not contain cationized cellulose or hydroxyethyl cellulose.