Composition and hair treatment method

Abstract

To provide a composition that contains an oil-based component and a cationic surfactant and yet can achieve a high storage elastic modulus, and a hair treatment method using the composition.SOLUTION: A composition contains an oil-based component, a cationic surfactant, a polyhydric alcohol, and water and has a storage elastic modulus G1' of 300 Pa or more at a stress of 2.4 Pa measured under specific conditions. A hair treatment method uses a composition that contains an oil-based component, a cationic surfactant, a polyhydric alcohol, and water and has a storage elastic modulus G1' of 300 Pa or more at a stress of 2.4 Pa measured under specific conditions.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a composition suitable for treating hair, such as a leave-in treatment, and a method of treating hair using the composition. [Background technology]

[0002] Compositions applied to hair are formulated with oily ingredients such as hydrocarbons, silicones, ester oils, and fats and oils to improve the feel of hair. It is known that surfactants and thickeners are used in these formulations to disperse the oily ingredients within the composition. As examples of known compositions, Patent Document 1 discloses an oil-in-water emulsion containing polyacrylate-13, silicone, and a cationic surfactant (see claim 1, paragraph 0032), and Patent Document 2 discloses a hair treatment agent containing an acrylic acid / alkyl (meth)acrylate copolymer, an alkali agent, a nonionic surfactant, a liquid oily ingredient, and water (see claim 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-100981 [Patent Document 2] Japanese Patent Application Laid-Open No. 2013-18735 Summary of the Invention [Problem to be solved by the invention]

[0004] In some hair compositions containing liquid oily ingredients, anionic polymers such as acrylic acid / alkyl (meth)acrylate copolymers are blended to achieve viscoelastic properties suited to the intended use. However, in compositions containing oily ingredients and cationic surfactants, the incorporation of such anionic polymers is limited due to their tendency to interact with the cationic surfactant, resulting in insufficient enhancement of the storage modulus, a viscoelastic property.

[0005] In view of the above circumstances, an object of the present invention is to provide a composition that can achieve a high storage modulus after incorporating an oily component and a cationic surfactant, and a hair treatment method that uses the composition. [Means for solving the problem]

[0006] As a result of extensive research, the present inventors have discovered that by blending a polyhydric alcohol and water together with an oily component and a cationic surfactant, and by appropriately setting the blending amounts thereof, and then using a predetermined manufacturing method, separation of the oily component can be suppressed and a composition with a high storage modulus under specific measurement conditions can be realized, which has led to the completion of the present invention.

[0007] That is, the composition of the present invention is characterized by comprising an oily component, a cationic surfactant, a polyhydric alcohol, and water, and having a storage modulus G1' of 300 Pa or more as measured using a rheometer under the following measurement condition 1. <Measurement condition 1> Measurement method: Stress-dependent measurement Sensor: 35mm diameter, 2° tilt angle cone plate sensor Temperature: 25℃ Frequency: 1Hz Stress range: 0.1Pa to 1000Pa Stress when measuring storage modulus G1': 2.4 Pa

[0008] The composition according to the present invention is preferably used for hair application. In this application, separation of the oily component is suppressed by the incorporation of the cationic surfactant, polyhydric alcohol, and water, and a composition having a storage modulus G1' of 300 Pa or more is used. This provides the unique feel of the composition according to the present invention during use, as well as the hair feel due to the cationic surfactant and the oily component. This hair feel is more noticeable when the composition is applied to hair and left in a leave-in state.

[0009] The composition of the present invention preferably contains the oily component in an amount of 60% by mass or more. Even at this amount, by appropriately adjusting the amounts of cationic surfactant, polyhydric alcohol, and water, a composition can be achieved in which the oily component does not separate. In addition, the feel of the oily component can be more easily felt.

[0010] The composition according to the present invention preferably contains 15% by mass or less of the water, which is suitable for increasing the storage modulus G1' and also makes it easier to feel the oily component.

[0011] The composition of the present invention preferably has a ratio G2" / G2' of the loss modulus G2" to the storage modulus G2' measured using a rheometer under the following measurement condition 2, of 0.50 or less. A ratio G2" / G2' of 0.50 or less is suitable for improving the smooth feel during use. <Measurement condition 2> Measurement method: Stress-dependent measurement Sensor: 35mm diameter, 2° tilt angle cone plate sensor Temperature: 25℃ Frequency: 1Hz Stress range: 0.1Pa to 1000Pa Stress when measuring storage modulus G2' and loss modulus G2": 100 Pa

[0012] The composition of the present invention preferably contains less than 0.5 mass % of one or more selected from anionic polymers and anionic surfactants, or contains no anionic polymers at all, thereby reducing the interaction between the anionic surfactant or anionic polymer and the cationic surfactant, and is suitable for the effect of inhibiting separation of the oily component by the cationic surfactant, polyhydric alcohol, and water.

[0013] The hair treatment method according to the present invention is characterized by using the composition according to the present invention. [Effects of the Invention]

[0014] The composition according to the present invention, which is produced by appropriately blending an oily component, a cationic surfactant, a polyhydric alcohol, and water, can achieve a storage modulus G1' of 300 Pa or more while suppressing separation of the oily component.

[0015] Furthermore, the hair treatment method according to the present invention can impart to the hair a texture that is provided by the oily component and cationic surfactant contained in the composition used. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a graph showing the storage modulus G′ and loss modulus G″ of Examples 1a and 1e. DETAILED DESCRIPTION OF THE INVENTION

[0017] The present invention will be described below based on the embodiments of the present invention. The composition according to the present embodiment is characterized by its viscoelastic properties. The composition according to the present embodiment contains an oil component, a cationic surfactant, a polyhydric alcohol, and water, and further contains optional components depending on the intended use.

[0018] (viscoelastic properties) The storage modulus G1' of the composition of this embodiment, which is one of the viscoelastic properties, is 300 Pa or more, preferably 500 Pa to 5000 Pa, preferably 800 Pa to 4000 Pa, more preferably 1000 Pa to 3000 Pa, even more preferably 1300 Pa to 2500 Pa, and even more preferably 1500 Pa to 2000 Pa. A storage modulus of 300 Pa or more is suitable for suppressing separation of oily components that occurs over time, and a storage modulus of 5000 Pa or less is suitable for imparting a soft feel to the skin.

[0019] The value of the storage modulus G1' is determined using a rheometer (for example, a stress-controlled rheometer "Rheo Stress 6000" manufactured by HAAKE) under the following measurement condition 1. <Measurement condition 1> Measurement method: Stress-dependent measurement Sensor: 35mm diameter, 2° tilt angle cone plate sensor Temperature: 25℃ Frequency: 1Hz Stress range: 0.1Pa to 1000Pa Stress when measuring storage modulus G1': 2.4 Pa

[0020] The composition of this embodiment preferably has a ratio G2" / G2' of the loss modulus G2" to the storage modulus G2' of 0.50 or less, preferably 0.45 or less, more preferably 0.40 or less, even more preferably 0.35 or less, and even more preferably 0.30 or less. For the composition of this embodiment to have a smooth feel when spread, it is preferable that the ratio G2" / G2' is 0.50 or less.

[0021] When calculating the ratio G2" / G2', the storage modulus G2' and loss modulus G2" are measured using a rheometer (e.g., a stress-controlled rheometer "Rheo Stress 6000" manufactured by HAAKE) under measurement condition 2 below. <Measurement condition 2> Measurement method: Stress-dependent measurement Sensor: 35mm diameter, 2° tilt angle cone plate sensor Temperature: 25℃ Frequency: 1Hz Stress range: 0.1Pa to 1000Pa Stress when measuring storage modulus G2' and loss modulus G2": 100 Pa

[0022] (Oily ingredients) The composition of this embodiment contains an oily component for the purpose of improving the feel of the surface of the object to be coated. This oily component is insoluble or poorly soluble in water, and refers to hydrocarbons, silicones, ester oils, and fats and oils. It is preferable to incorporate one or more oily components into the composition of this embodiment. From the viewpoint of improving the feel of the oily component, the amount of the oily component in the composition is preferably 60% by mass or more, preferably 75% by mass or more, and more preferably 80% by mass or more. On the other hand, the upper limit of the amount of the oily component is not particularly limited, but is, for example, 95% by mass.

[0023] When ease of spreadability is desired for the composition of this embodiment, it is preferable to blend one or more liquid oily components that exhibit fluidity at 25°C as the oily component to be blended in the composition of this embodiment. From the viewpoint of ease of spreadability, the blending amount of the liquid oily component in the composition of this embodiment is preferably 60% by mass or more, preferably 75% by mass or more, and more preferably 80% by mass or more. On the other hand, the upper limit of the blending amount of the liquid oily component is not particularly limited, but is, for example, 95% by mass.

[0024] Depending on the intended use of the composition of this embodiment, one or more volatile oil components may be blended into the composition as the oil component. The blending amount of the volatile oil component in the composition of this embodiment is preferably 60% by mass or more, preferably 75% by mass or more, and more preferably 80% by mass or more, from the viewpoint of suppressing a sticky feeling on the applied hair. Meanwhile, the upper limit of the blending amount of the volatile oil component is not particularly limited, but is, for example, 95% by mass.

[0025] When a hydrocarbon is blended as the oily component, it is preferable to blend one or more types selected from known hydrocarbons, such as isododecane, light liquid isoparaffin, liquid isoparaffin, liquid paraffin, and squalane. The amount of hydrocarbon blended in the composition of this embodiment is, for example, 50% by mass or more.

[0026] When silicone is blended as the oily component, it is preferable to blend one or more types selected from known silicones, such as dimethyl silicone (methyl polysiloxane, highly polymerized methyl polysiloxane, etc.), methyl phenyl silicone, cyclic silicone (octamethyl cyclotetrasiloxane, decamethyl cyclopentasiloxane, etc.), amino-modified silicone (aminoethyl aminopropyl siloxane-dimethyl siloxane copolymer, aminoethyl aminopropyl methyl siloxane-dimethyl siloxane copolymer, etc.), long-chain alkyl-modified silicone, and dimethiconol. The amount of silicone blended in the composition of this embodiment is, for example, 50% by mass or more.

[0027] When an ester oil is used as the oil component, one or more types of known ester oils may be used. Examples of known ester oils include esters of linear fatty acids (e.g., cetyl caprylate) and monohydric linear alcohols, esters of linear fatty acids (e.g., 2-octyldodecyl myristate) and monohydric branched alcohols, esters of branched fatty acids (e.g., stearyl 2-ethylhexanoate) and monohydric branched alcohols, esters of branched fatty acids (e.g., 2-ethylhexyl isononanoate) and monohydric branched alcohols, esters of linear or branched fatty acids (e.g., caprylic / capric triglyceride) and polyhydric alcohols, and benzoate esters (e.g., C12-15 alkyl benzoate). The amount of ester oil in the composition of this embodiment is, for example, 5% by mass or more.

[0028] When fats and oils (mainly consisting of triesters of fatty acids and glycerin) are blended as the oily component, it is advisable to blend one or more selected from known fats and oils, such as avocado oil, almond oil, argania spinosa kernel oil, olive oil, kukui nut oil, rice bran oil, corn oil, safflower oil, shea butter, shea butter oil, baobab seed oil, persic oil, palm kernel oil, sunflower oil, grape seed oil, hazelnut oil, macadamia nut oil, meadowfoam oil, and rosehip oil. The amount of fats and oils blended in the composition of this embodiment is, for example, 5% by mass or more.

[0029] (cationic surfactant) The composition of this embodiment contains a cationic surfactant for the purposes of achieving the above storage modulus G1' and improving the feel of the surface of the object to be coated.

[0030] The cationic surfactant blended in the composition of this embodiment is one or more selected from known cationic surfactants, and examples of such cationic surfactants include amidoamines (such as fatty acid amidoamines) and alkyl quaternary ammonium salts (such as long-chain alkyl trimethyl ammonium salts and di-long-chain alkyl dimethyl ammonium salts). To increase the storage modulus G1' or to prolong the inhibition of separation of oily components, suitable cationic surfactants include fatty acid amidoamines and long-chain alkyl trimethyl ammonium salts, with fatty acid amido amine salts being particularly suitable.

[0031] The fatty acid amidoamines include, for example, fatty acid amidoamines represented by the following general formula (1). R 1 -CO-NH-(CH) n -NR 2 R 3 (1) [In the above general formula (1), R 1 ,s,R 2 , and R 3 is as follows: R 1 represents a hydrocarbon group or a hydroxyhydrocarbon group having 11 to 25 carbon atoms (or 15 to 21 carbon atoms). 1 is saturated or unsaturated, and is linear or branched. n represents an integer of 1 or more and 4 or less (may be 2 or more and 3 or less). R 2 represents an alkyl group or a hydroxyalkyl group having 3 or less carbon atoms (may be 2 or less carbon atoms). 2 R is linear or branched. 3 represents an alkyl group or a hydroxyalkyl group having 3 or less carbon atoms (may also have 2 or less carbon atoms). 3 is linear or branched.

[0032] Specific examples of the fatty acid amidoamine represented by the general formula (1) above include lauric acid dimethylaminopropylamide, myristic acid dimethylaminopropylamide, palmitic acid dimethylaminopropylamide, stearic acid dimethylaminopropylamide, behenic acid dimethylaminopropylamide, oleic acid dimethylaminopropylamide, isostearic acid dimethylaminopropylamide, lauric acid diethylaminoethylamide, myristic acid diethylaminoethylamide, palmitic acid diethylaminoethylamide, stearic acid diethylaminoethylamide, behenic acid diethylaminoethylamide, oleic acid diethylaminoethylamide, lauric acid diethylaminopropylamide, myristic acid diethylaminopropylamide, palmitic acid diethylaminopropylamide, stearic acid diethylaminopropylamide, behenic acid diethylaminopropylamide, and oleic acid diethylaminopropylamide.

[0033] Examples of the long-chain alkyltrimethylammonium salt include lauryltrimethylammonium chloride, cetyltrimethylammonium bromide, stearyltrimethylammonium chloride, stearyltrimethylammonium bromide, behenyltrimethylammonium chloride, and behenyltrimethylammonium methosulfate.

[0034] Examples of the di-long chain alkyl dimethyl ammonium include dicetyl dimethyl ammonium chloride, distearyl dimethyl ammonium chloride, dicocoyl dimethyl ammonium chloride, and dialkyl (C12-18) dimethyl ammonium chloride.

[0035] The amount of cationic surfactant in the composition of this embodiment is preferably 0.5% by mass or more, more preferably 0.7% by mass or more, and even more preferably 1% by mass or more, when the storage modulus G1' is to be increased or when the inhibition of separation of oily components is to be prolonged. Furthermore, when the ratio G2" / G2' is to be set low or when irritation to the scalp is to be reduced, the amount is preferably 6% by mass or less, more preferably 4% by mass or less, more preferably 3% by mass or less, and even more preferably 2% by mass or less.

[0036] (Polyhydric alcohol) The composition of this embodiment contains a polyhydric alcohol for the purposes of achieving the above storage modulus G1' and improving the feel of the surface of the object to be coated.

[0037] The polyhydric alcohol blended in the composition of this embodiment is a dihydric, trihydric, or tetrahydric alcohol having 6 or fewer carbon atoms, and examples of such polyhydric alcohols include glycerin, 1,2-propanediol, 1,3-propanediol, 2-methyl-1,3-propanediol, 1,3-butylene glycol, diethylene glycol, dipropylene glycol, diglycerin, and triethylene glycol, and one or more polyhydric alcohols are blended in the composition of this embodiment. When increasing the storage modulus G1' or prolonging the suppression of separation of oily components, suitable polyhydric alcohols include, for example, glycerin, 1,2-propanediol, and 1,3-propanediol, with glycerin being particularly suitable.

[0038] The amount of polyhydric alcohol in the composition of this embodiment is preferably 0.5% by mass or more, more preferably 1.0% by mass or more, and even more preferably 1.5% by mass or more, when the storage modulus G1' is to be increased or when the separation of oily components is to be inhibited for a long period of time. Furthermore, when the ratio G2" / G2' is to be set low, the amount is preferably 5% by mass or less, more preferably 4% by mass or less, and even more preferably 3% by mass or less.

[0039] (water) In the composition of this embodiment, water is blended to suppress separation of the oily components during production and over time. In the composition of this embodiment, the blend amount of water is preferably 1% by mass or more and 15% by mass or less, preferably 2% by mass or more and 10% by mass or less, and more preferably 3% by mass or more and 8% by mass or less. A blend amount of water of 1% by mass or more is suitable for suppressing separation of the oily components, and a blend amount of water of 15% by mass or less is suitable for increasing the storage modulus G'.

[0040] (optional ingredient) The composition of the present embodiment may optionally contain components that are contained in known hair compositions, such as surfactants other than cationic surfactants, sugars, monohydric alcohols, higher alcohols, fatty acids, polymeric compounds, amino acids, animal and plant extracts, fragrances, preservatives, sequestering agents, and ultraviolet absorbers.

[0041] When the composition of the present embodiment contains one or more anionic polymers (such as acrylic acid-alkyl (meth)acrylate copolymers and carboxyvinyl polymers) and anionic polymers as optional components, the amount of the anionic polymers added is preferably less than 0.5% by mass, more preferably less than 0.2% by mass, more preferably less than 0.1% by mass, even more preferably less than 0.05% by mass, and even more preferably less than 0.01% by mass (optimally, no anionic polymers or anionic surfactants are added as optional components). When the amount of the anionic polymer or anionic surfactant added is less than 0.5% by mass, it is possible to reduce interactions with cationic surfactants that are inappropriate for inhibiting separation of oily components in the composition of the present embodiment, and it is also suitable for setting the ratio G2" / G2' low.

[0042] (pH) The pH of the composition of the present embodiment is preferably 4 or more and 8 or less, more preferably 4 or more and 7 or less, from the viewpoint of imparting a good feel to the hair by the cationic surfactant.

[0043] (Manufacturing method) In the production of the composition of this embodiment, the oil component is added to a mixture of a cationic surfactant, a polyhydric alcohol, and water. By adopting this production method, it is possible to set the storage modulus G1' to 300 Pa or more.

[0044] (Application) The composition of the present embodiment contains a cationic surfactant and an oily component known as components for repairing hair and improving its feel, and is therefore suitable for use in applications where the composition is applied to hair. In particular, when used in a leave-in form, the composition is suitable for use by applying it to wet or dry hair and allowing it to dry naturally or with hot air. [Example]

[0045] The present invention will be described in detail below based on examples, but the present invention should not be construed as being limited by the descriptions in these examples.

[0046] Examples and comparative compositions were prepared. In producing this composition, dimethylaminopropylamide stearic acid, palmitic acid amidopropyltrimethylammonium chloride 60% by weight blend (Evonik Operations' "VARISOFT PATC"), stearyltrimethylammonium chloride 28% by weight blend (Kao's "Cortamine 86W"), stearyltrimethylammonium chloride 28% by weight blend (Miwon's "MICONIUM STAC80(I)"), stearyltrimethylammonium chloride 70% by weight blend (Toho Chemical Industry's "Catinal STC-70ET"), behenyltrimethylammonium salt 80% by weight blend (KCL's "BTMS P8580KC"), dialkyl (C12-C18) dimethylammonium chloride 75% by weight blend (Kao's "Cortamine D-2345P"), and coconut oil fatty acid ethyl hydroxyethylmethylammonium salt 80% by weight blend (BASF's "DEHYQUART L80"), 1,2-propanediol, 1,3-butylene glycol, glycerin, 1,3-butylene glycol, 2-methyl-1,3-propanediol, dipropylene glycol, 2.5% by weight aqueous solution of carboxyvinyl polymer "Carbopol Ultrez 10 Polymer" manufactured by Lubrizol, 2-amino-2-methyl-1-propanol, 20% by weight blend of polyquaternium-11 ("HC Polymer 2" manufactured by Osaka Organic Chemical Industry Co., Ltd.), alkyl benzoate (C12-C15), meadowfoam oil, highly polymerized methylpolysiloxane and isododecane mixture ("Silsoft" manufactured by Momentive Performance Materials Japan Co., Ltd.). The ingredients used were methylparaben, methylparaben, ethylparaben, lactic acid, fragrance, and water, in the amounts shown in Tables 1a and 2 to 6 below.The compositions of the examples and comparative examples were prepared by mixing the components of group (A) shown in Tables 1a and 2 to 6 below, then adding and mixing the components of group (B), and then adding and mixing the components of group (C).

[0047] After production, each composition was visually inspected, and separation of the oily component was observed in all of the comparative compositions, whereas separation of the oily component was not observed in all of the example compositions.

[0048] For all of the compositions of the examples in which separation of oily components was not observed after production, the compositions were filled into glass containers, sealed, and left at a temperature of 50°C, after which the appearance was visually inspected (see the table below for the period of time that the compositions were left at that temperature).

[0049] Furthermore, the storage modulus G' and loss modulus G" of some of the compositions of the examples were measured. For this measurement, a stress-controlled rheometer "Rheo Stress 6000" manufactured by HAAKE was used, and the measurement conditions were as follows: Measurement method: Stress-dependent measurement Sensor: 35mm diameter, 2° tilt angle cone plate sensor Temperature: 25℃ Frequency: 1Hz Stress range: 0.1Pa to 1000Pa

[0050] Tables 1a and 2 to 6 below show the components and their blending amounts used in producing the compositions of the examples and comparative examples, as well as the storage modulus G1′ at a measured stress of 2.4 Pa and the visual inspection results for “appearance.” Tables 1b to 1c below show the storage modulus G′, loss modulus G″, and the ratio G″ / G′ of loss modulus G″ to storage modulus G′ for Examples 1a and 1e (FIG. 1 is a graph based on these values). In each table, “◯,” “△,” and “×” in “appearance” have the following meanings. ○: Separation of oily components was not observed. △: Slight separation of oily components was observed. ×: Separation of oily components was observed.

[0051]

Table 1a

[0052]

Table 1b

[0053]

Table 1c

[0054]

Table 2

[0055]

Table 3

[0056]

Table 4

[0057]

Table 5

[0058]

Table 6

Claims

1. A liquid oily component that is fluid at 25°C, cationic surfactants, polyhydric alcohols, which are dihydric, trihydric, or tetrahydric alcohols having six or fewer carbon atoms; and Water is mixed in, The blending amount of the oily component is 60% by mass or more and 95% by mass or less, the blending amount of the polyhydric alcohol is 0.5% by mass or more and 5% by mass or less, The blending amount of the water is 1% by mass or more and 15% by mass or less, The storage modulus G measured using a rheometer under the following measurement condition 1 １ The composition has a viscosity of 300 Pa or more and is used in a manner that the composition is applied to the hair and not rinsed off. <Measurement Condition 1> Measurement method: Stress-dependent measurement Sensor: Cone plate sensor with a diameter of 35 mm and an inclination angle of 2° Temperature: 25℃ Frequency: 1 Hz Stress range: 0.1 Pa to 1000 Pa Storage modulus G １ 'Stress during measurement: 2.4 Pa

2. The cationic surfactant is a fatty acid amidoamine, a long-chain alkyl trimethyl ammonium salt, or a di-long-chain alkyl dimethyl ammonium salt, The content of the cationic surfactant is 0.5% by mass or more and 6% by mass or less. The composition of claim 1.

3. The storage modulus G measured using a rheometer under the following measurement conditions 2 ２ Loss modulus G for ' ２ "Ratio of G ２ " / G ２ 3. The composition of claim 1 or claim 2, wherein ' is 0.50 or less. <Measurement Condition 2> Measurement method: Stress-dependent measurement Sensor: Cone plate sensor with a diameter of 35 mm and an inclination angle of 2° Temperature: 25℃ Frequency: 1 Hz Stress range: 0.1 Pa to 1000 Pa Storage modulus G ２ ' and loss modulus G ２ Stress during measurement: 100 Pa

4. The composition according to any one of claims 1 to 3, wherein one or more selected from anionic polymers and anionic surfactants are blended in an amount of less than 0.5 mass % or are not blended at all.

5. A method for treating hair, comprising using a composition according to any one of claims 1 to 4.

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