JP2023179820A - hair conditioning composition - Google Patents

Abstract

To provide a hair conditioning composition that reduces a feeling of the composition left in the hair during rinsing, smoothens the hair during rinsing and blow-drying, and keeps the hair together after blow-drying.SOLUTION: A hair conditioning composition contains (A) an aliphatic amine represented by a formula: NR5R6R7 (at least one of R5, R6, and R7 has a C12-30 alkyl group, optionally having an amide group, a hydroxy group, or an alkylene glycol group, with a remainder independently selected from a C1-3 alkyl group or alkylene glycol group), and (B) an oil solution that is liquid at 20°C. The hair conditioning composition has a pH of 6.0 or more. Preferably, the pH is 6.5 or more, and the component (B) is ester oil.SELECTED DRAWING: None

Description

The present invention relates to hair conditioning compositions.

In daily hair care, hair cosmetics such as rinses, conditioners, and treatments are widely used to improve the feel of hair after shampooing.

Various hair cosmetics such as rinses, conditioners, and treatments have been proposed in accordance with the hair feel desired by the user. However, although market demands have been met for smoothness during drying and cohesion after drying, smoothness during washing tends to be neglected.

For example, a conditioning composition containing a fatty acid amine and a liquid oil has been proposed in order to provide a smooth, non-sticky, soft and good finishing feel (Patent Document 1). However, while these conditioning compositions can provide smoothness and firmness after drying, they are not satisfactory in terms of smoothness when washed off.

JP2015-124174

Conventional hair conditioning compositions have already been found to have a residual feel when rinsed off, smoothness when used with a hair dryer, and clumps after drying, but in addition, they have not been able to provide smoothness when rinsed off.

Therefore, an object of the present invention is to provide a hair conditioning composition that provides a feeling of lingering after rinsing, smoothness when rinsing, smoothness when blow-drying, and smoothness after drying.

As a result of intensive research to achieve the purpose of the present invention, the present inventors have found that by containing an aliphatic amine and a liquid oil agent at a pH of 6.0 or higher, the lingering feeling when rinsing, the smoothness when rinsing, and the dryer The present invention was completed based on the discovery that it is possible to obtain a hair conditioning composition that has both smoothness during drying and cohesiveness after drying.

The present invention is a hair conditioning composition comprising (A) and (B) and having a pH of 6.0 or higher.
(A) Aliphatic amine represented by the following general formula (I) (B) Oil agent that is liquid at 20°C
(At least one of R ₅ R ₆ R ₇ has an alkyl group having 12 to 30 carbon atoms, and may contain an amide group, a hydroxy group, or an alkylene glycol group, and the rest have an alkyl group having 1 to 3 carbon atoms. or alkylene glycol groups).

In the present invention, the pH is preferably 6.5 or higher, and (B) is preferably an ester oil.

According to the present invention, it is possible to provide a hair conditioning composition that has a residual feeling when washed off, smoothness when washed off, smoothness when used as a hair dryer, and smoothness after drying.

The present invention will be explained in detail below.

As used herein, "residual feeling" refers to a state in which when hair is pinched with fingers and moved, the surface is uniform and the hair surface feels thick due to the agent. Moreover, "smoothness" means that when the hair is pinched and moved with fingers, it moves smoothly without getting caught, and the hair surface is evenly coated.

<Hair conditioning composition>
The hair conditioning composition of the present invention can be used in hair rinses, hair conditioners, hair treatments, hair packs, hair creams, leave-on treatments, and the like.

Further, the hair conditioning composition of the present invention can be produced by a conventional method, and its dosage form is not particularly limited. Specifically, it can be used in an appropriate dosage form such as cream or emulsion. Further, it can be an aerosol, a non-aerosol, etc., and in the case of a non-aerosol, it can take various forms such as a squeeze foamer type and a pump former type.

The hair conditioning composition of the present invention is characterized by having A) and (B) and having a pH of 6.0 or more.
(A) Aliphatic amine represented by the following general formula (I) (B) Oil agent that is liquid at 20°C
(At least one of R ₅ R ₆ R ₇ has an alkyl group having 12 to 30 carbon atoms, and may contain an amide group, a hydroxy group, or an alkylene glycol group, and the rest have an alkyl group having 1 to 3 carbon atoms. or alkylene glycol groups).

Each component in the conditioning composition of the present invention will be explained in detail below.

<(A) component>
Component (A) used in the present invention is a tertiary aliphatic amine. Tertiary aliphatic amines are generally used with acids to prevent static electricity, and the hair surface becomes smooth by being covered with lipophilic groups, which can suppress the generation of static electricity. . However, in the present invention, by using it in an area that is not affected by acids, it can contribute to the feeling of residue on the hair during washing.

Component (A) is represented by general formula (1).
(At least one of R ₅ R ₆ R ₇ has an alkyl group having 12 to 30 carbon atoms, and may contain an amide group, a hydroxy group, or an alkylene glycol group, and the rest have an alkyl group having 1 to 3 carbon atoms. or alkylene glycol groups).

The tertiary amine used as component (A) is not particularly limited, but specific examples include stearamidopropyl dimethylamine, behenamidopropyl dimethylamine, PPG-1/PEG-1 stearamine, and the like. As component (A), commercially available products may be used.

Component (A) is not particularly limited as long as it can exhibit the effects of the present invention, but the amount of component (A) added is 0.1% by mass or more in total based on the hair conditioning composition. This is preferable, and the smoothness when rinsing is improved.

<(B) component>
Component (B) used in the present invention is an oil agent that is liquid at 20°C. Here, "liquid at 20°C" indicates a state in which it has a melting point at a temperature of 20°C or lower and has fluidity at 20°C. An oil agent that is liquid at 20°C provides smoothness during drying and good cohesion after drying. Component (B) is generally used as an oily base for imparting luster and shine to hair. The present invention mainly contributes to smoothness during drying and cohesion after drying.

The oils that are liquid at 20°C used as component (B) include, but are not limited to, diethylhexyl succinate, diethyl sebacate, isopropyl myristate, isopropyl hexanoate, cetyl isooctanoate, Examples include isodecyl neopentanoate, neopentyl glycol dicaprate, octyldodecyl myristate, octyldodecanol, isostearyl isostearate, mineral oil, etc., and one or more of these can be used in combination. Preferred are ester oils selected from octyldodecyl myristate and diethyl sebacate. As component (B), commercially available products may be used.

Component (B) is not particularly limited as long as it can exhibit the effects of the present invention, but the amount of component (B) added should be 0.1% by mass in total based on the hair conditioning composition. is preferable, and the smoothness during drying will be even better, and if the oil agent is ester oil, the cohesion after drying will be even better.

<Preparation of pH>
It is important that the pH of the hair conditioning composition of the present invention is 6.0 or higher, preferably 6.5 or higher. Typical hair conditioning compositions have a pH of less than 6.0 due to preservation of antiseptic properties and the influence of cationic surfactants. However, in the present invention, it has been found that setting the pH to 6.0 or higher contributes to improving the smoothness of hair during washing. This is presumably because the pH change on the hair during rinsing can be minimized by making the pH of the hair conditioning composition and the water at the time of rinsing the same level.

In order to adjust the pH of the hair conditioning composition of the present invention to 6.0 or higher, the amount of amine and acid of component (A) may be appropriately controlled.

<Other ingredients>
In addition to the above-mentioned components, the hair conditioning composition of the present invention may contain other components that are generally included in hair conditioning 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; quaternary ammonium salts such as steartrimonium chloride and behentrimonium chloride; polymeric compounds such as cationized cellulose and poly(diallyldimethylammonium chloride); ; Anti-dandruff ingredients such as zinc pyrithione and benzalkonium chloride; Lower alcohols such as ethanol, methanol, propyl alcohol, and isopropyl alcohol; Oils that are not liquid at 20°C such as paraffin wax and petrolatum; Silicone compounds such as dimethicone and amodimethicone; DPG , polyols such as propylene glycol; other ultraviolet absorbers, preservatives, sugars, fragrances, coloring agents, sequestering agents, antioxidants, various chemicals, water, and the like.

Next, the hair conditioning composition 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 will be explained.

(1) Evaluation method for residual feeling after rinsing 3 g of the conditioning compositions according to the examples and comparative examples of the present invention prepared by a conventional method using the formulations shown in Tables 1 to 3 were applied to 10 g of hair strands (manufactured by Beaulux Co., Ltd., Asia After application to the same single hair (length 30cm), 10 trained evaluators evaluated the residual feeling felt while washing with 40℃ water for 10 seconds according to the following evaluation criteria. The score was set as 5 points, and the average value of the scores of 10 people was calculated for the difference in scores after three treatments. Using the average value, the residual feeling upon rinsing was determined based on the following scoring criteria.

<Evaluation criteria for residual feeling after washing>
5 points: When you pinch and pull, the surface is uniform, and you can feel the agent thick on the hair surface. 4 points: When you pinch and pull, the surface is uniform, and you can feel the agent on the hair surface. 3 points: When you pinch and pull, the surface is not uniform. 2 points: I felt the agent on the hair surface: When I pinched it and pulled it, the surface was not uniform, and I could not feel much of the agent on the hair surface. 1 point: When I pinched it and pulled it, the surface was not uniform, and I could not feel the agent on the hair surface. I didn't feel it at all

<Score criteria for residual feeling after washing>
◎: 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) Method for evaluating smoothness during rinsing 3 g of conditioning compositions according to Examples and Comparative Examples of the present invention prepared by a conventional method using the formulations in Tables 1 to 3 were applied to 10 g of hair tresses (manufactured by Beaulux, Asia After application to the same single hair, length 30 cm), 10 trained evaluators evaluated the smoothness felt while washing with 40°C water for 10 seconds according to the evaluation criteria below. The score was set as 5 points, and the average value of the scores of 10 people was calculated for the difference in scores after three treatments. Using the average value, smoothness during washing was determined based on the following scoring criteria.

<Evaluation criteria for smoothness when rinsing>
5 points: When I pinched it and pulled it, it didn't catch at all, and it felt like the hair surface was evenly coated. 4 points: When I pinched it and pulled it, it didn't get caught, and the hair surface seemed to be coated evenly to some extent. 3 points: When I pinched it and pulled it, it didn't catch much, and I felt that the hair surface was coated to some extent. 2 points: When I pinched it and pulled it, it didn't catch much, but the hair surface was coated. One point that I didn't feel like it was: When I pinched it and pulled it, I felt it get caught, but it didn't feel like the hair surface was being coated.

<Smoothness when rinsing off 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) Method for evaluating smoothness when drying After applying to the same single hair, 30 cm long), rinse with 40℃ water for 10 seconds, comb the wet hair 20 times, towel dry for 5 seconds, and dry with a hair dryer. The smoothness of the hair was observed and evaluated by 10 trained evaluators according to the following evaluation criteria, and the average value of the total scores of the 10 people was calculated. Using the average value, smoothness during drying was determined based on the following scoring criteria.

<Smoothness evaluation criteria when drying>
5 points: When I pinched it and pulled it, it didn't catch at all, and it felt like the hair surface was evenly coated. 4 points: When I pinched it and pulled it, it didn't get caught, and the hair surface seemed to be coated evenly to some extent. 3 points: When I pinched it and pulled it, it didn't catch much, and I felt that the hair surface was coated to some extent. 2 points: When I pinched it and pulled it, it didn't catch much, but the hair surface was coated. One point that I didn't feel like it was: When I pinched it and pulled it, I felt it get caught, but it didn't feel like the hair surface was being coated.

<Smoothness score criteria when drying>
◎: 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) Method for evaluating cohesiveness after drying 3 g of conditioning compositions according to Examples and Comparative Examples of the present invention prepared by a conventional method using the formulations in Tables 1 to 3 were applied to 10 g of hair tresses (manufactured by Beaulux, same in Asia). After applying to human hair (length 30 cm), rinse with 40℃ water for 10 seconds, comb the wet hair 20 times, towel dry for 5 seconds, then use a hair dryer until it feels completely dry. Ten trained evaluators evaluated the cohesiveness of the hair bundles after drying according to the following evaluation criteria, and calculated the average value of the total scores of the 10 people. Using the average value, the cohesion after drying was determined based on the following scoring criteria.

<Evaluation criteria for consistency after drying>
5 points: It doesn't look wide and it feels moist when you put your finger through it. 4 points: It doesn't look wide and it feels a little moist when you put your finger through it. 3 points: It doesn't look very wide. 2 points: It felt a little moist when I passed my finger through it: It didn't look very spacious, but it didn't feel moist when I passed my finger through it. 1 point: It looked wide and felt moist when I passed my finger through it. didn't feel like

<Cohesiveness after drying 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 17) (Comparative Examples 1 to 5)
Using the formulations listed in Tables 1 to 3, evaluations were made regarding the residual feeling when rinsing, smoothness when rinsing, smoothness when drying, and cohesiveness after drying. Comparative Examples 4 and 5 were commercially available products (hair conditioning) containing components (A) and (B).

From Tables 1 to 3, Examples 1 to 17 using the components of the present invention all showed excellent performance. On the other hand, in Comparative Examples 1 to 5, the compositions were inferior in any of the following aspects: residual feeling after rinsing, smoothness when rinsing, smoothness when drying, and cohesiveness after drying, and did not achieve the objective of the present invention. could not.

Other formulation examples of the conditioning composition of the present invention are listed below. The compositions of these formulation examples were also evaluated in terms of residual feeling after rinsing, smoothness when rinsing, smoothness when drying, and cohesiveness after drying.

Formulation example 1 Hair pack (pH 7.59) Amount (mass%)
(1) Stearyl alcohol 9.0
(2) Bisdiglyceryl polyacyl adipate-2 1.0
(3) Paraffin 1.0
(4) Behenyl alcohol 1.0
(5) Behenyl PG trimonium chloride 1.0
(6) Cetrimonium chloride 1.0
(7) Behentrimonium chloride 1.0
(8) Vaseline 1.0
(9) Hydroxyethyl cellulose 0.4
(10) DPG 1.0
(11) Behenamidopropyldimethylamine 5.0
(12)BG 0.5
(13) Laures-23 0.1
(14) (C12-14) Palace-5 0.1
(15) PEG-55 stearate 0.1
(16) Laures-4 0.1
(17) Rice bran extract 0.1
(18) Dimethicone 2.0
(19) Glycerin 1.0
(20) Amodimethicone 1.0
(21) Tea seed oil 0.1
(22) Rice germ oil 0.1
(23) Diethyl sebacate 1.0
(24) Octyldodecyl myristate 1.0
(25) Methylparaben 0.2
(26) Phenoxyethanol 0.1
(27) Fragrance 0.2
(28) Purified water remainder

Prescription example 2 Hair treatment (7.61) Compounding amount (mass%)
(1) Cetearyl alcohol 6.0
(2) Bisdiglyceryl polyacyl adipate-2 1.0
(3) Paraffin 1.0
(4) Behenyl alcohol 1.0
(5) Behenyl PG trimonium chloride 0.5
(6) Hydrogenated polyisobutene 0.5
(7) Behentrimonium chloride 0.5
(8) Vaseline 1.0
(9) Hydroxyethylcellulose 0.4
(10) Sakura leaf extract 0.1
(11) Steartrimonium chloride 0.5
(12) Behenamidopropyldimethylamine 0.2
(13) (C12-14) Palace-7 0.1
(14) (C12-14) Palace-5 0.1
(15) PPG-1/PEG-1 stearamine 0.8
(16) Laures-4 0.1
(17) Rice bran extract 0.1
(18) Dimethicone 1.0
(19) Sorbitol 1.0
(20) Tea seed oil 0.1
(21) Rice germ oil 0.1
(22) Dimethicone 1.0
(23) DPG 0.1
(24) Saccharomyces/rice bran fermented liquid extract 0.1
(25) Isopropyl myristate 1.0
(26) Methylparaben 0.2
(27) Phenoxyethanol 0.1
(28) Fragrance 0.2
(29) Purified water remainder

Formulation example 3 Hair conditioner (7.73) Amount (% by mass) (1) Cetearyl alcohol 4.0
(2) Bisdiglyceryl polyacyl adipate-2 1.0
(3) Paraffin 1.0
(4) Stearyl alcohol 2.0
(5) Behenyl PG trimonium chloride 1.0
(6) Cetrimonium chloride 0.5
(7) Behentrimonium chloride 1.0
(8) Diethyl sebacate 0.5
(9) Hydroxyethylcellulose 0.1
(10) Sake lees extract 0.1
(11) Steartrimonium chloride 0.5
(12) Mineral oil 0.3
(13) (C12-14) Palace-7 0.1
(14) (C12-14) Palace-5 0.1
(15) Laures-23 0.1
(16) Behenamidopropyldimethylamine 1.0
(17) Rice bran extract 0.1
(18) Dimethicone 2.0
(19) Sorbitol 1.0
(20) Tea seed oil 0.1
(21) Rice germ oil 0.1
(22) Amodimethicone 1.0
(23) DPG 1.0
(24) Saccharomyces/rice bran fermented liquid extract 0.1
(25) Octyldodecyl myristate 0.2
(26) Methylparaben 0.2
(27) Phenoxyethanol 0.1
(28) Fragrance 0.2
(29) Purified water remainder

The compositions of these formulation examples were also evaluated in terms of residual feeling when rinsing off, smoothness when rinsing off, smoothness when drying, and cohesiveness after drying, and all properties were excellent and good results were obtained. I got it.

Claims (3)

A hair conditioning composition comprising (A) and (B) and having a pH of 6.0 or more.
(A) Aliphatic amine represented by the following general formula (I) (B) Oil agent that is liquid at 20°C
(At least one of R ₅ R ₆ R ₇ has an alkyl group having 12 to 30 carbon atoms, and may contain an amide group, a hydroxy group, or an alkylene glycol group, and the rest have an alkyl group having 1 to 3 carbon atoms. or alkylene glycol groups). The hair conditioning composition according to claim 1, wherein the pH is 6.5 or higher. The hair conditioning composition according to claim 1 or 2, wherein the (B) is an ester oil.