JP7524005B2 - Conditioning Composition - Google Patents

Description

The present invention relates to a conditioning composition.

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 to suit the feel of the hair that users desire. However, although they meet market demands for smoothness when rinsing, as well as manageability and smoothness after drying, smoothness during use, especially during drying, tends to be neglected.

For example, conditioning compositions containing amidoamines and the like have been proposed to provide smoothness when rinsing and smoothness after drying (Patent Document 1). However, while these conditioning compositions can provide smoothness when rinsing and smoothness after drying, they are not satisfactory in terms of smoothness while drying hair and manageability after drying.

In addition, conditioning compositions containing highly polymerized PEG and the like have been proposed to improve smoothness and reduce dryness when drying (Patent Document 2). However, while these conditioning compositions can provide smoothness and reduce dryness when drying, they are not satisfactory in terms of smoothness when rinsing and smoothness after drying.

JP2005-343859 Patent Publication 2015-051941

The present invention has been made in consideration of the above circumstances, and its purpose is to provide a conditioning composition that is smooth when rinsing, smooth while drying, smooth after drying, and manageable after drying.

As a result of intensive research conducted by the inventors in order to achieve the object of the present invention, they discovered that by combining three or more types of quaternary ammonium salts, three or more types of nonionic surfactants, and a pH of 6.5 or less, a conditioning composition can be obtained that is smooth when rinsing, smooth during drying, smooth after drying, and manageable after drying, and thus completed the present invention.

The present invention relates to a conditioning composition comprising the following components (A) and (B) and having a pH of 6.5 or less:
(A) Three or more types of quaternary ammonium salts (B) Three or more types of nonionic surfactants

Preferably, the conditioning composition further contains the following component (C):
(C) one or more oil agents that are paste-like at 25°C

More preferably, the conditioning composition contains component (A) in an amount of 1.0 wt% or more based on the total mass, and even more preferably, all of the nonionic surfactants in component (B) have an oxyethylene group.

The present invention provides a conditioning composition that is smooth when rinsing, smooth while drying, smooth after drying, and manageable after drying.

The present invention is described in detail below.

In this specification, "smoothness" refers to hair that can be passed through without catching fingers and that can be pinched and pulled without resistance or stiffness at the ends. "Manageability" refers to hair that does not fall apart when shaken and that stays in place without containing excess air layers in the lateral or thickness directions.

<Conditioning Composition>
The conditioning composition of the present invention can be used as a hair rinse, hair conditioner, hair treatment, hair pack, hair cream, leave-on treatment, etc. The conditioning composition of the present invention can be produced by a conventional method, and the formulation is not particularly limited. Specifically, the conditioning composition can be used in an appropriate formulation such as a cream or emulsion. The conditioning composition can also be an aerosol or non-aerosol, and in the case of a non-aerosol, it can be in various forms such as a squeeze foamer type and a pump foamer type.

The conditioning composition of the present invention comprises:
The conditioning composition of the present invention is characterized by comprising (A) three or more kinds of quaternary ammonium salts and (B) three or more kinds of nonionic surfactants, and having a pH of 6.5 or less. Each component in the conditioning composition of the present invention will be described in detail below.

<Component (A)>
The component (A) used in the conditioning composition of the present invention is a quaternary ammonium salt. An example of such a quaternary ammonium salt is represented by the formula (1).


(At least one of R _{1 ,} R _{2 ,} R _{3 and} R ₄ has an alkyl group having 12 to 25 carbon atoms and may include an amide group, a hydroxyl group or an alkylene glycol group, and the remainder are each independently selected alkyl groups having 1 to 3 carbon atoms. X- is a halogen ion or an organic anion selected from, for example, acetate, alkyl sulfate and phosphate.)
Component (A) is used primarily as a component that contributes to the smoothness of hair when rinsing and during drying.

The quaternary ammonium salt used as component (A) is not particularly limited, but specifically includes lauryl trimonium chloride, cetrimonium chloride, steartrimonium chloride, behentrimonium chloride, lauryl trimonium bromide, cetrimonium bromide, steartrimonium bromide, behentrimonium bromide, lauryl PG trimonium chloride, myristyl PG trimonium chloride, cetyl PG trimonium chloride, steartrimonium PG trimonium chloride. Lid, behenyl PG trimonium chloride, lauryl trimonium methosulfate, cetrimonium methosulfate, steartrimonium methosulfate, behentrimonium methosulfate, lauryl trimonium ethosulfate, cetrimonium ethosulfate, steartrimonium ethosulfate, behentrimonium ethosulfate, stearoxypropyl trimonium chloride, etc., and three or more of these can be used in combination. Component (A) may be a commercially available product.

It is preferable that component (A) is a combination of three or more different quaternary ammonium salts. By combining three or more types, the effect of increasing smoothness during drying can be obtained.

The amount of component (A) is not particularly limited as long as the effects of the present invention can be achieved, but it is preferable that the total amount of three or more types of component (A) is 0.65% by mass or more of the conditioning composition, and more preferably 1.0% by mass or more. If the amount is 0.65% by mass or more, the smoothness during drying will be even better.

<Component (B)>
The component (B) used in the conditioning composition of the present invention is a nonionic surfactant. The component (B) is used mainly as a component that contributes to smoothness of hair when rinsing and after drying.

The nonionic surfactant used as component (B) is not particularly limited, but specific examples include laureth-4, laureth-23, (C12-14) pareth-5, (C12-14) pareth-7, ceteth-2, ceteth-6, ceteth-20, threaless-4, steareth-20, PEG-55 stearate, PPG-3 caprylyl ether, PEG-60 hydrogenated castor oil, PPG-2 cocamide, cocamide MEA, etc., and three or more of these can be used in combination. Component (B) may be a commercially available product.

It is preferable that component (B) is a combination of three or more different nonionic surfactants. By combining three or more types, the effect of increasing smoothness after drying can be obtained.

Furthermore, for component (B), laureth-4, laureth-23, (C12-14) pareth-5, (C12-14) pareth-7, PEG-55 stearate, ceteth-2, ceteth-6, and other oxyethylene group-containing components are preferred as they provide good smoothness when poured.

The component (B) is not particularly limited as long as it can exert the effects of the present invention, but it is preferable that the blending amount of three or more types of component (B) is 0.1% by mass or more in total relative to the conditioning composition. If the blending amount is 0.2% by mass or more in total, the smoothness after drying is even better.

<Component (C)>
Component (C) is an oil that is in a paste form at 25° C. A paste (semi-solid) at 25° C. is an oil that has a melting point at a temperature above 25° C. and does not completely solidify at 25° C., and is therefore distinguished from liquid and solid oils. Component (C) is primarily used as an ingredient that contributes to the manageability of hair after drying.

The oil agent in the form of a paste at 25°C of the present invention includes, but is not limited to, phytosteryl/isostearyl/cetyl/stearyl/behenyl dilinoleate, dipentaerythrityl hexa(hydroxystearic acid/stearic acid/rosin acid), phytosteryl rice bran oil fatty acid, phytosteryl oleate, glyceryl tri(caprylic acid/capric acid/myristic acid/stearic acid), diglyceryl adipate mixed fatty acid ester, petrolatum, lanolin, etc., and one or more of these may be used in combination. Component (C) may be a commercially available product.

The amount of component (C) is not particularly limited as long as the effects of the present invention can be achieved, but it is preferably 0.5% by mass or more relative to the conditioning composition. If the amount is 0.5% by mass or more, hair will be well-mannered when dried.

Therefore, by combining the above-mentioned specific components (A), (B) and (C), the conditioning composition of the present invention exhibits the effects of smoothness when rinsing, smoothness during drying, smoothness after drying, and manageability after drying.

<Other ingredients>
In addition to the above-mentioned components, the conditioning composition of the present invention may contain other components that are generally incorporated into normal conditioning compositions depending on the purpose, provided that the effects of the present invention are not impaired.

Examples of such components include higher alcohols such as stearyl alcohol and behenyl alcohol; polymeric compounds such as cationic cellulose and poly(diallyldimethylammonium chloride); anti-dandruff components 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; polyols such as DPG and propylene glycol; and other ultraviolet absorbers, preservatives, sugars, fragrances, colorants, sequestering agents, antioxidants, various medicines, and water.

<pH>
The pH is the value at 25° C. If the pH is 6.5 or less, the composition has good cohesion after drying.

Next, the 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 used in each example will be explained.

(1) Evaluation method for smoothness during 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 compositions in Tables 1 to 4, was applied to a 10 g bundle of hair (Bealux, Asian identical human hair, length 30 cm), and then 10 trained evaluators evaluated the smoothness felt during rinsing with water at 40° C. for 10 seconds according to the following evaluation criteria, with a score of 5 points before treatment and the difference in scores after three treatments calculated as the average score of the 10 evaluators. The average value was used to evaluate the smoothness during rinsing based on the following score criteria.

<Evaluation criteria for smoothness when rinsing>
5 points: There was no snagging at all when I put my fingers through it, and I did not feel any stiffness at the tip of the bristles when I pinched and pulled it. 4 points: There was no snagging when I put my fingers through it, and I felt a slight stiffness at the tip of the bristles when I pinched and pulled it. 3 points: There was some snagging when I put my fingers through it, and I felt a slight stiffness at the tip of the bristles when I pinched and pulled it. 2 points: There was a snagging when I put my fingers through it, and I felt a stiffness at the tip of the bristles when I pinched and pulled it. 1 point: There was a strong snagging when I put my fingers through it, and I felt a strong stiffness at the tip of the bristles when I pinched and pulled it.

<Smoothness when rinsing score criteria>
◎: Very good...4.5 points or more ○: Good...3 points or more, less than 4.5 points △: Poor...2.0 points or more, less than 3 points ×: Very bad...less than 2.0 points

(2) Method for evaluating smoothness during drying 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 in Tables 1 to 4, was applied to a 10 g hair bundle (Bealux, Asian identical human hair, length 30 cm), and then rinsed with water at 40° C. for 10 seconds. The wet hair bundle was combed 20 times and towel-dried for 5 seconds. After that, 10 trained evaluators observed and evaluated the smoothness of the hair during drying with a hair dryer according to the following evaluation criteria, and the average of the total scores of the 10 evaluators was calculated. Using this average value, the smoothness during drying was judged based on the following score criteria.

<Evaluation criteria for smoothness during drying>
5 points: There was no snagging at all when I put my fingers through it, and I did not feel any stiffness at the tip of the bristles when I pinched and pulled it. 4 points: There was no snagging when I put my fingers through it, and I felt a slight stiffness at the tip of the bristles when I pinched and pulled it. 3 points: There was some snagging when I put my fingers through it, and I felt a slight stiffness at the tip of the bristles when I pinched and pulled it. 2 points: There was a snagging when I put my fingers through it, and I felt a stiffness at the tip of the bristles when I pinched and pulled it. 1 point: There was a strong snagging when I put my fingers through it, and I felt a strong stiffness at the tip of the bristles when I pinched and pulled it.

<Smoothness during drying - score criteria>
◎: Very good...4.5 points or more ○: Good...3 points or more, less than 4.5 points △: Poor...2.0 points or more, less than 3 points ×: Very bad...less than 2.0 points

(3) Method for evaluating smoothness after drying 3 g of the conditioning compositions according to the examples and comparative examples of the present invention, prepared by a conventional method using the compositions in Tables 1 to 4, was applied to a 10 g hair bundle (Bealux, Asian human hair, length 30 cm), rinsed with water at 40° C. for 10 seconds, combed the wet hair bundle 20 times, towel-dried for 5 seconds, and then dried with a hair dryer until the hair bundle felt completely dry. Ten trained evaluators evaluated the smoothness after drying according to the following evaluation criteria, and the average of the total scores of the 10 evaluators was calculated. Using the average value, the smoothness after drying was judged based on the following score criteria.

<Evaluation criteria for smoothness after drying>
5 points: There was no snagging at all when I put my fingers through it, and I did not feel any stiffness at the tip of the bristles when I pinched and pulled it. 4 points: There was no snagging when I put my fingers through it, and I felt a slight stiffness at the tip of the bristles when I pinched and pulled it. 3 points: There was some snagging when I put my fingers through it, and I felt a slight stiffness at the tip of the bristles when I pinched and pulled it. 2 points: There was a snagging when I put my fingers through it, and I felt a stiffness at the tip of the bristles when I pinched and pulled it. 1 point: There was a strong snagging when I put my fingers through it, and I felt a strong stiffness at the tip of the bristles when I pinched and pulled it.

<Smoothness after drying score criteria>
◎: Very good...4.5 points or more ○: Good...3 points or more, less than 4.5 points △: Poor...2.0 points or more, less than 3 points ×: Very bad...less than 2.0 points

(4) Method for evaluating manageability after drying 3 g of the conditioning compositions according to the examples and comparative examples of the present invention, prepared by a conventional method using the compositions in Tables 1 to 4, was applied to a 10 g hair bundle (Bealux, Asian identical human hair, length 30 cm), rinsed with water at 40° C. for 10 seconds, combed the wet hair bundle 20 times, towel-dried for 5 seconds, and then dried with a hair dryer until the hair bundle felt completely dry. Ten trained evaluators evaluated the smoothness of the hair after drying according to the following evaluation criteria, and the average of the total scores of the 10 evaluators was calculated. Using the average value, the manageability after drying was judged based on the following score criteria.

<Evaluation criteria for hold after drying>
5 points: hair returns to its original shape even when shaken, and does not contain any extra air layers; 4 points: hair almost returns to its original shape even when shaken, and does not contain many extra air layers; 3 points: hair almost returns to its original shape even when shaken, but it becomes slightly loose and does not contain many extra air layers; 2 points: hair does not return to its original shape much even when shaken, and it becomes loose, and contains many extra air layers; 1 point: hair does not return to its original shape even when shaken, and it becomes loose, and contains many extra air layers

<Score criteria for hold after drying>
◎: Very good...4.5 points or more ○: Good...3 points or more, less than 4.5 points △: Poor...2.0 points or more, less than 3 points ×: Very bad...less than 2.0 points

(Examples 1 to 51) (Comparative Examples 1 to 6)
Hair conditioners having the compositions shown in Tables 1 to 4 were prepared by a conventional method, and the smoothness when rinsing, the smoothness during drying, the smoothness after drying, and the manageability after drying were evaluated. Comparative Example 6 is a hair treatment agent currently on the market.

As is clear from Tables 1 to 4, all of Examples 1 to 51, which used the components of the present invention, showed excellent performance. On the other hand, Comparative Examples 1 to 6 were inferior in terms of smoothness when rinsing the composition, smoothness during drying, smoothness after drying, and hold after drying, and the object of the present invention could not be achieved.

Other formulation examples of the conditioning composition of the present invention are given below. The compositions of these formulation examples were also evaluated in terms of smoothness when rinsing, smoothness while drying, smoothness after drying, and hold after drying.

Formulation Example 1 Hair Pack Formulated amount (mass%)
(1) Stearyl alcohol 9.0
(2) Bisdiglyceryl polyacyladipate-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) Sake lees extract 0.1
(11) Behenamidopropyl dimethylamine 0.2
(12) Lactic acid 0.4
(13) Laureth-23 0.1
(14) (C12-14) Palace-5 0.1
(15) PEG-55 stearate 0.1
(16) Laureth-4 0.1
(17) Rice bran extract 0.1
(18) Dimethicone 2.0
(19) Glycerin 1.0
(20) Tea seed oil 0.1
(21) Rice germ oil 0.1
(22) Sebacin diethyl 0.1
(23) Octyldodecyl myristate 0.1
(24) Methylparaben 0.2
(25) Phenoxyethanol 0.1
(26) Fragrance 0.2
(27) Purified water residual pH 4.1

Formulation Example 2 Hair Treatment Amount (mass%)
(1) Cetearyl alcohol 6.0
(2) Bisdiglyceryl polyacyladipate-2 1.0
(3) Paraffin 1.0
(4) Behenyl alcohol 1.0
(5) Behenyl PG trimonium chloride 0.5
(6) Cetrimonium chloride 0.5
(7) Behentrimonium chloride 0.5
(8) Vaseline 1.0
(9) Hydroxyethyl cellulose 0.4
(10) Sake lees extract 0.1
(11) Steartrimonium chloride 0.5
(12) Citric acid 0.8
(13) (C12-14) Palace-7 0.1
(14) (C12-14) Palace-5 0.1
(15) PEG-55 stearate 0.1
(16) Laureth-4 0.1
(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) BG 0.1
(26) Methylparaben 0.2
(27) Phenoxyethanol 0.1
(28) Fragrance 0.2
(29) Purified water residual pH 5.3

Formulation Example 3 Hair conditioner Blend amount (mass%)
(1) Cetearyl alcohol 4.0
(2) Bisdiglyceryl polyacyladipate-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) Hydroxyethyl cellulose 0.1
(10) Sake lees extract 0.1
(11) Steartrimonium chloride 0.1
(12) Lactic acid 0.1
(13) (C12-14) Palace-7 0.1
(14) (C12-14) Palace-5 0.1
(15) Laureth-23 0.1
(16) Behenamidopropyl dimethylamine 0.1
(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 residual pH 4.4

The compositions of these formulation examples were also evaluated for smoothness when rinsing, smoothness while drying, smoothness after drying, and hold after drying, and all properties were excellent, yielding good results.

Claims (3)

A conditioning composition comprising the following components (A) and (B), having a pH of 6.5 or less, and containing 0.65 mass% or more of component (A) and 0.1 mass% or more of component (B) based on a total mass of the composition :
(A) three or more kinds of quaternary ammonium salts; (B) three or more kinds of nonionic surfactants selected from laureth-4, (C12-14) pareth-7, (C12-14) pareth-5, PEG-55 stearate, laureth-23, PPG-2 cocamide, and cocamide MEA. The conditioning composition according to claim 1, further comprising the following component (C):
(C) one or more oil agents that are paste-like at 25°C 3. The conditioning composition according to claim 1, comprising component (A) in an amount of 1.0% by mass or more based on the total mass of the composition.