JP7427409B2 - hair cosmetics - Google Patents

Description

TECHNICAL FIELD The present invention relates to a hair cosmetic that has both a moist and manageable finish that slides easily through the fingers and is non-sticky.

With the trend of women's hairstyles, opportunities for coloring and perming are increasing. As a result, consumers are becoming more aware of hair damage, as evidenced by the booming damage care market, and hair treatments, hair masks, and other products that provide a finish specifically designed for damage care are on the market. is increasing. On the other hand, natural hairstyles have become a trend in recent years, and there is a need for a finish that is not sticky while also taking sufficient care of damage to the hair.

In order to meet such consumer needs, Patent Document 1 discloses that 50 to 95 mol% of 2-[(meth)acryloyloxy]ethyl-2-(trimethylammonio)ethyl phosphate and 2-hydroxy-3-(meth) ) A hair cosmetic has been proposed that imparts slipperiness, moisturizing, and manageability to hair by containing a copolymer with 5 to 50 mol% of acryloyloxypropyltrimethylammonium chloride in a predetermined content.

Furthermore, Patent Document 2 discloses a hair treatment composition that imparts shine, smoothness, and suppleness to hair without stickiness by containing high molecular weight dimethylpolysiloxane, silicone oil, cyclic silicone, and/or volatile chain silicone. is proposed.

Japanese Patent Application Publication No. 2004-189678 Japanese Patent Application Publication No. 2004-161752

However, the invention described in Patent Document 1 has resulted in the dissatisfaction that too much film is formed on the hair, leaving it sticky.

Further, the invention described in Patent Document 2 causes dissatisfaction with not being able to obtain a sufficiently moist feeling.

Therefore, there was a need to propose a product that was both non-sticky and had a moist finish that was easy to slide through.

The present invention has been made in view of the above-mentioned circumstances, and its object is to provide a hair cosmetic that provides a moist and manageable finish that can be easily passed through the fingers and is free from stickiness.

As a result of intensive research to achieve the purpose of the present invention, the present inventor has found that
(A) dimethylpolysiloxane having a kinematic viscosity at 25° C. of 5 cSt or more and less than 10,000 cSt;
(B) dimethylpolysiloxane having a kinematic viscosity at 25°C of 10,000 cSt or more and less than 1,000,000 cSt;
(C) It has been discovered that a hair cosmetic that solves this problem can be obtained by blending a predetermined content of dimethylpolysiloxane having a kinematic viscosity of 1,000,000 cSt or more at 25°C, and the present invention has been completed.

The first invention is
(A) 1.0 to 3.0% by mass of dimethylpolysiloxane having a kinematic viscosity at 25°C of 5 cSt or more and less than 10,000 cSt, based on the mass of the entire hair cosmetic;
(B) 0.8 to 2.0% by mass of dimethylpolysiloxane having a kinematic viscosity at 25°C of 10,000 cSt or more and less than 1,000,000 cSt based on the mass of the entire hair cosmetic;
(C) 1.5 to 3.0% by mass of dimethylpolysiloxane with a kinematic viscosity of 1,000,000 cSt or more at 25°C based on the total mass of the hair cosmetic.
A hair cosmetic comprising:

The second invention is the hair cosmetic according to the first invention, wherein the component (A) has a kinematic viscosity at 25° C. of 5 cSt or more and 1000 cSt or less.

A third invention is the hair cosmetic according to any one of the first invention or the second invention, wherein component (B) has a kinematic viscosity at 25° C. of 10,000 cSt or more and 100,000 cSt or less.

（上記式（１）中、Ｒ１は水素原子又はメチル基を表し、ｎ１は他の構成単位とのモル比を表す。） A fourth invention is the hair cosmetic according to any one of the first to third inventions, further comprising a component (D) having the following general formula (1).

(In the above formula (1), R1 represents a hydrogen atom or a methyl group, and n1 represents a molar ratio with other structural units.)

A fifth invention is the hair cosmetic according to the fourth invention, wherein component (D) is polyquaternium-107.

According to the present invention, there is provided a hair cosmetic that contains the above-mentioned components (A), (B), and (C) in predetermined contents, thereby giving a moist and manageable finish that is easy to run through the fingers when drying the hair, and that is not sticky. can do. Preferably, the composition further contains a component (D) having the above formula (1) to provide a finish that is smoother to the touch.

The present invention will be explained in detail below.

<Hair cosmetics>
The hair cosmetic of the present invention comprises (A) dimethylpolysiloxane having a kinematic viscosity of 5 cSt or more and less than 10,000 cSt at 25°C, (B) dimethylpolysiloxane having a kinematic viscosity of 10,000 cSt or more and less than 1,000,000 cSt at 25°C, (C) 25 The present invention provides a hair cosmetic that solves this problem by incorporating a predetermined content of dimethylpolysiloxane having a kinematic viscosity of 1,000,000 cSt or more at °C.

The hair cosmetic of the present invention can be used in hair rinses, hair conditioners, hair treatments, hair packs, and the like. Moreover, the hair cosmetic of the present invention can be manufactured by a conventional method.

Hereinafter, each component in the hair cosmetic of the present invention will be explained in detail.

<Component (A) Dimethylpolysiloxane with kinematic viscosity at 25°C of 5 cSt or more and less than 10,000 cSt>
Component (A) used in the hair cosmetic of the present invention is a low-viscosity silicone oil that exhibits substantially no volatility at room temperature and pressure. Component (A) is a dimethylpolysiloxane having a kinematic viscosity of 5 cSt or more and less than 10000 cSt at 25° C. as measured by a B-type viscometer, and more preferably a dimethylpolysiloxane having a kinematic viscosity of 5 or more and 1000 cSt or less. In the present invention, component (A) is used as a component that contributes to a smooth finish when hair is dried. Furthermore, a commercially available component (A) may be used.

The blending amount of component (A) is 1.0 to 3.0% by mass, preferably 2.0 to 3.0% by mass, based on the total mass of the hair cosmetic composition of the present invention. When the amount is less than 1.0% by mass, the hair tends to get tangled and it becomes difficult to run the fingers through the hair, and when it is more than 3.0% by mass, the hair becomes sticky.

<Component (B) Dimethylpolysiloxane having a kinematic viscosity of 10,000 cSt or more and less than 1,000,000 cSt at 25°C>
Component (B) is a dimethylpolysiloxane having a kinematic viscosity of 10,000 cSt or more and less than 1,000,000 cSt at 25° C. as measured by a B-type viscometer, and more preferably a dimethylpolysiloxane having a kinematic viscosity of 10,000 cSt or more and 100,000 cSt or less. In the present invention, component (B) is used as a component that contributes to a finish that easily combs through the fingers when drying the hair. Furthermore, a commercially available component (B) may be used.

The blending amount of component (B) is 0.8 to 2.0% by mass, preferably 1.0 to 1.7% by mass, based on the total mass of the hair cosmetic of the present invention. If it is less than 0.8% by mass, the fingerability and cohesive feel will be insufficient, and if it is more than 2.0% by mass, stickiness will occur.

<Component (C) Highly polymerized dimethylpolysiloxane with a kinematic viscosity of 100,000 0 c St or more at 25°C>
Component (C) is a highly polymerized dimethylpolysiloxane having a kinematic viscosity of 100,000 0 c St or more at 25° C. as measured by a B-type viscometer. In the present invention, component (C) is used as a component that contributes to a moist and manageable finish when hair is dried. Moreover, a commercially available product may be used as component (C).

The blending amount of component (C) is 1.5 to 3.0% by mass, preferably 1.5 to 2.5% by mass, based on the total mass of the hair cosmetic of the present invention. If it is less than 1.5% by mass, the moist and cohesive finish will be insufficient, and if it is more than 3.0% by mass, it will become sticky.

Therefore, in the hair cosmetic of the present invention, by combining the above-mentioned specific ingredients (A), ingredient (B), and ingredient (C) in the above-mentioned specific blending amounts, a moist finish that is not sticky and easily slips through the fingers can be achieved. Ru.

<Component (D) Polymer having a phosphorylcholine group of general formula (1)>
Furthermore, in addition to the above-mentioned components (A) to (C), the hair cosmetic of the present invention further contains component (D), thereby giving the hair a smoother feel when drying and making it easier to run through the fingers. I can do it.

（上記式（１）中、Ｒ１は水素原子又はメチル基を表し、ｎ１は他の構成単位とのモル比を表す。） The component (D) polymer containing a phosphorylcholine group used in the hair cosmetic of the present invention is a polymer containing a phosphorylcholine group represented by the following general formula (1). The phosphorylcholine group is preferably 2-methacryloyloxyethylenephosphorylcholine. The polymer containing phosphorylcholine groups may contain a combination of two or more types of phosphorylcholine groups, if necessary.

(In the above formula (1), R1 represents a hydrogen atom or a methyl group, and n1 represents a molar ratio with other structural units.)

（上記式（２）及び（３）中、Ｒ２及びＲ５は、それぞれ独立に水素原子又はメチル基を表し、Ｒ３及びＲ４はそれぞれ独立にメチル基又はエチル基を表し、Ｒ６は炭素数１２～２４の一価の炭化水素基を表し、ｍは１～３の整数を表し、ｎ２及びｎ３は他の構成単位とのモル比を表す。） Moreover, it is preferable that the polymer containing the phosphorylcholine group contains a cationic group represented by the following general formula (2) or a hydrophobic group represented by the following general formula (3).

(In the above formulas (2) and (3), R2 and R5 each independently represent a hydrogen atom or a methyl group, R3 and R4 each independently represent a methyl group or an ethyl group, and R6 has a carbon number of 12 to 24 represents a monovalent hydrocarbon group, m represents an integer from 1 to 3, and n2 and n3 represent the molar ratio with other structural units.)

The phosphorylcholine group-containing polymers described above can be made in a variety of ways. For example, a composition including a monomer represented by general formula (1) is replaced with an inert gas such as nitrogen, carbon dioxide, argon, helium, etc. in the presence of a radical polymerization initiator, or radicals are removed in an atmosphere. Polymerization can be carried out by known methods such as bulk polymerization, suspension polymerization, emulsion polymerization, and solution polymerization. Solution polymerization is preferred from the viewpoint of purification and the like. Purification of a polymer containing a phosphorylcholine group can be performed by a general purification method such as a reprecipitation method, a dialysis method, or an ultrafiltration method. Moreover, polymers containing these are commercially available and may be used. In particular, a composition containing the monomers of general formulas (1), (2) and (3) is sold as Polyquaternium-107, and it is preferable to use this.

<Other ingredients>
In addition to the above-mentioned components, the hair cosmetic composition of the present invention may contain other components that are generally included in hair cosmetic compositions, depending on the purpose, as long as the effects of the present invention are not impaired.

Such components include, for example, higher alcohols such as stearyl alcohol and behenyl alcohol; cationic surfactants such as behentrimonium chloride and steartrimonium chloride; polymers such as cationized cellulose and poly(diallyldimethylammonium chloride); Compounds; Higher fatty acids such as stearic acid, behenic acid, and lanolin fatty acids; Oil agents such as diethyl sebacate, isodecyl neopentanoate, and white petrolatum; Silicones with a temperature of less than 10,000 cSt at 25°C, such as low-polymerized silicones and polyether-modified silicones (the above components (A) ) to (C) excluding silicones); Anti-dandruff ingredients such as zinc pyrithione and benzalkonium chloride; Lower alcohols such as ethanol, methanol, propyl alcohol and isopropyl alcohol; Organic acids such as lactic acid and citric acid; Other ultraviolet absorption Agents, preservatives, sugars, fragrances, coloring agents, sequestering agents, antioxidants, various drugs, water, etc.

Next, the hair cosmetic of the present invention will be specifically explained by illustrating Examples and Comparative Examples, but the present invention is not limited to these Examples in any way. First, the test methods and evaluation methods employed in each example and comparative example will be explained.

(1) Run your fingers through the hair when dry <Test/evaluation method>
Apply 3 g of conditioning compositions according to the Examples and Comparative Examples of the present invention, prepared by a conventional method using the formulations in Tables 1 and 2, to 10 g of hair bundles (manufactured by Beaulux, Asian human hair, length 30 cm). After that, the hair was rinsed with water at 40° C. for 10 seconds, the wet hair bundle was combed 20 times, towel-dried for 5 seconds, and then dried with a hair dryer until it felt completely dry.

A trained expert panel of 10 people evaluated the hair throughput (feeling of friction when you run your fingers through the hair) after the above treatment according to the evaluation criteria below, and calculated the average value of the total scores of the 10 people. . Using the average value, the finger running through the hair during drying was determined based on the following scoring criteria.

<Evaluation criteria>
5 points: When I run my fingers through the hair, my fingers slide without any friction. 4 points: When I run my fingers through the hair, I feel a little heavy. 3 points: When I run my fingers through the hair, I feel some parts get caught. 2 points: : When I run my fingers through the hair, I feel like the entire hair is caught.One point: When I run my fingers through the hair, my fingers don't slip.

<Score criteria>
◎: Very good...4.5 points or more ○: Excellent...3 points or more, less than 4.5 points △: Poor...2.0 points or more, 3 Less than 2.0 points ×: Very poor...less than 2.0 points

(2) Moist feeling of hair when dry <Test/evaluation method>
Apply 3 g of conditioning compositions according to the Examples and Comparative Examples of the present invention, prepared by a conventional method using the formulations in Tables 1 and 2, to 10 g of hair bundles (manufactured by Beaulux, Asian human hair, length 30 cm). After that, the hair was rinsed with water at 40° C. for 10 seconds, the wet hair bundle was combed 20 times, towel-dried for 5 seconds, and then dried with a hair dryer until it felt completely dry.

A trained expert panel of 10 people evaluated the moist feeling of the hair after the above treatment (the cold feeling of water when you pick it up) according to the evaluation criteria below, and the average of the total scores of the 10 people. The value was calculated. Using the average value, the moist feeling of the hair when dry was determined based on the following scoring criteria.

<Evaluation criteria>
5 points: When the hair is picked, it feels cold and very moist. 4 points: When the hair is picked, it feels cold and has a strong moist feeling. 3 points: When the hair is picked, it is cold, but the moist feeling is slightly weak. 2 points. : When I pick my hair, I hardly feel any coldness, and I hardly feel any moistness. 1 point: When I pick my hair, I don't feel any coldness, and I don't feel any moistness at all.

<Score criteria>
◎: Very good...4.5 points or more ○: Excellent...3 points or more, less than 4.5 points △: Poor...2.0 points or more, 3 Less than 2.0 points ×: Very poor...less than 2.0 points

(3) Hair clumpiness when dry <Test/evaluation method>
Apply 3 g of conditioning compositions according to the Examples and Comparative Examples of the present invention, prepared by a conventional method using the formulations in Tables 1 and 2, to 10 g of hair bundles (manufactured by Beaulux, Asian human hair, length 30 cm). After that, the hair was rinsed with water at 40° C. for 10 seconds, the wet hair bundle was combed 20 times, towel-dried for 5 seconds, and then dried with a hair dryer until it felt completely dry.

A trained expert panel of 10 people evaluated the hair's manageability after the above treatment according to the following evaluation criteria, and the average value of the total scores of the 10 people was calculated. Using the average value, the feeling of cohesiveness of the hair during drying was determined based on the following scoring criteria.

<Evaluation criteria>
5 points: Hair is tidy 4 points: Hair is a little messy, but can be combed quickly with a hand comb 3 points: Hair is messy, but can be combed quickly with a hand comb 2 points: Hair is tidy The hair is messy and cannot be combed easily even with a hand comb.One point: Hair is so messy that it is difficult to comb it even with a hand comb.

<Score criteria>
◎: Very good...4.5 points or more ○: Excellent...3 points or more, less than 4.5 points △: Poor...2.0 points or more, 3 Less than 2.0 points ×: Very poor...less than 2.0 points

(4) No stickiness of hair when dry <Test/evaluation method>
Apply 3 g of conditioning compositions according to the Examples and Comparative Examples of the present invention, prepared by a conventional method using the formulations in Tables 1 and 2, to 10 g of hair bundles (manufactured by Beaulux, Asian human hair, length 30 cm). After that, the hair was rinsed with water at 40° C. for 10 seconds, the wet hair bundle was combed 20 times, towel-dried for 5 seconds, and then dried with a hair dryer until it felt completely dry.

The non-stickiness of the hair after the above treatment (feeling that the moisture and oiliness are balanced) was evaluated by a trained professional panel of 10 people according to the evaluation criteria below, and the average of the total scores of the 10 people was evaluated. was calculated. Using the average value, the lack of stickiness of the hair when dry was determined based on the following scoring criteria.

<Evaluation criteria>
5 points: There is no stickiness at all, and the moisture and oiliness are well balanced. 4 points: There is no stickiness, but the balance between moisture and oiliness is slightly off. 3 points: There is no stickiness, but the moisture and oiliness are slightly out of balance. 2 points where the balance of oiliness is disrupted: Slightly sticky, the balance between moisture and oiliness is disrupted 1 point: Quite sticky, the balance between moisture and oiliness is severely disrupted

<Score criteria>
◎: Very good...4.5 points or more ○: Excellent...3 points or more, less than 4.5 points △: Poor...2.0 points or more, 3 Less than 2.0 points ×: Very poor...less than 2.0 points

Examples 1 to 25 and Comparative Examples 1 to 6 (hair rinse)
Hair rinses with the formulations listed in Tables 1 and 2 were prepared and examined for the moist feeling of the hair finish after drying, the cohesiveness of the finish, the smoothness of the finish, and the lack of stickiness of the finish.The results are also shown in Table 1. .

As is clear from Tables 1 and 2, the hair rinses of Examples 1 to 25 using the ingredients of the present invention all showed superior performance compared to the compositions of Comparative Examples 1 to 6.

Other formulation examples of the hair cosmetic composition of the present invention are listed below as Examples 26 to 31. For the hair cosmetics of Examples 26 to 31, the following items were examined: the moist feeling of the hair finish when drying after use, the cohesiveness of the finish, the smoothness of the finish, and the lack of stickiness of the finish. However, all the examples had excellent characteristics and were good.

(Production method) (1) to (4) and (6) to (16) were uniformly mixed and dissolved at 80°C, and (20) was dispersed in (22) heated to 80°C and stirred with a propeller. Add while stirring to emulsify. After gradual cooling, (5), (17) to (19), and (21) were added at 60°C, and the mixture was cooled to room temperature to prepare a hair conditioner.

(Production method) (1) to (10) and (13) to (17) were uniformly mixed and dissolved at 80°C, and (22) was dispersed in (24) heated to 80°C and stirred with a propeller. Add while stirring to emulsify. After gradual cooling, (11), (12), (18) to (21), and (23) were added at 60°C, and the mixture was cooled to room temperature to prepare a hair conditioner.

(Manufacturing method) (1) to (12) are uniformly mixed and dissolved at 80°C, and a dispersion of (20) is added to (22) heated to 80°C while stirring with a propeller to emulsify. After gradual cooling, (13) to (19) and (21) were added at 60°C, and the mixture was cooled to room temperature to prepare a hair treatment.

(Production method) (1) to (11) and (20) were uniformly mixed and dissolved at 80°C, and the mixture (21) and (22) were dispersed in (26), which was heated to 80°C, and stirred with a propeller. Add while stirring to emulsify. After gradual cooling, (12) to (19) and (23) to (25) were added at 60°C, and the mixture was cooled to room temperature to prepare a hair treatment.

(Production method) (1) to (10) and (12) to (20) were uniformly mixed and dissolved at 80°C, and (22) was dispersed in (24) heated to 80°C and stirred with a propeller. Add while stirring to emulsify. After gradually cooling, (11), (21), and (23) were added at 60° C., and the mixture was cooled to room temperature to prepare a hair pack.

(Production method) (1) to (10), (13), (14), (19), and (20) were uniformly mixed and dissolved at 80°C, and heated to 80°C. Add a dispersion of ~(27) while stirring with a propeller to emulsify. Gradually cool, add (11), (12), (15) to (18), (21) to (23), and (28) to (30) at 60°C, and cool to room temperature. , a hair pack was prepared.

Claims (5)

(A) 1.5 to 3.0% by mass of dimethylpolysiloxane having a kinematic viscosity at 25°C of 5 cSt or more and less than 10,000 cSt, based on the mass of the entire hair cosmetic;
(B) 0.8 to 2.0% by mass of dimethylpolysiloxane having a kinematic viscosity at 25°C of 10,000 cSt or more and less than 1,000,000 cSt based on the mass of the entire hair cosmetic;
(C) 1.5 to 3.0% by mass of dimethylpolysiloxane with a kinematic viscosity of 10,000,000 cSt or more at 25°C based on the total mass of the hair cosmetic.
A hair cosmetic comprising: The hair cosmetic according to claim 1, wherein the component (A) is dimethylpolysiloxane having a kinematic viscosity at 25°C of 5 cSt or more and 1000 cSt or less. The hair cosmetic according to claim 1 or 2, wherein the component (B) is dimethylpolysiloxane having a kinematic viscosity at 25° C. of 10,000 cSt or more and 100,000 cSt or less. The hair cosmetic according to any one of claims 1 to 3, further comprising a component (D) having the following general formula (1).

(In the above formula (1), R1 represents a hydrogen atom or a methyl group, and n1 represents a molar ratio with other structural units.) The hair cosmetic according to claim 4, wherein the component (D) is polyquaternium-107.