Hair oil composition

Abstract

To provide a hair oil composition that can finish the hair so that it is free from stickiness and is well set with a moist feel, the composition also having easy dischargeability from a pumped container.SOLUTION: A hair oil composition contains (A1) a hydrocarbon oil with a number average molecular weight of 150 or more and less than 1000 of 30-70 mass%, (A2) a hydrocarbon oil with a number average molecular weight of 1000 or more and 4000 or less of 0.1-10 mass%, (B) 5 -membered or 6-membered alkyl lactone of 0.001-1 mass%, and (C) silicone oil of 10-50 mass%, with the (A2) / (A1) mass ratio of 0.01-0.2.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a hair oil composition that is less sticky, leaves hair moisturized and manageable, and has excellent dischargeability from a pump-type container. [Background technology]

[0002] Hair is routinely damaged by various factors, including dryness, ultraviolet rays, heat from hair dryers and irons, and friction from brushing, and the damage to hair is exacerbated when hair is colored or permed. Leave-in hair cosmetics such as hair oils are used to protect hair from these external stimuli and to care for damaged hair.

[0003] For example, Patent Document 1 proposes an oily hair cosmetic that combines a dextrin fatty acid ester with a hydrocarbon oil or ester oil as a non-silicone oil, as an oily hair cosmetic that is non-sticky and leaves a light finish. Furthermore, Patent Document 2 proposes an oily hair cosmetic composition that combines a hydrocarbon oil or silicone oil with a flash point of 100°C or less, a hydrocarbon oil with a flash point of 170°C or more, and crambe abyssinica seed oil as an oily hair cosmetic composition that gives hair manageability and shine. As such, hair oils are required to have various effects to achieve attractive hair, and various technologies have been made public.

[0004] In recent years, hair oils have been preferred to be dispensed in pump-type containers, which are convenient and do not stain the hands or container. However, the amount of hair oil used per dose depends on the hair length and preference, and some users may pump strongly to dispense the oil multiple times or gently to stop the dispense midway. In addition, the temperature of the hair oil affects the dispensing properties of the oil from a pump-type container, so the dispensing properties may vary depending on the environment in which the oil is used, such as in summer, when the temperature is relatively high at around 30°C, or in winter, when the temperature is relatively low at around 10°C. This can cause problems such as the hair oil being dispensed from a pump-type container splashing or dripping from the nozzle, and therefore the development of a hair oil suitable for pump-type containers has been desired. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-213630 [Patent Document 2] Japanese Patent Publication No. 2020-193152 Summary of the Invention [Problem to be solved by the invention]

[0006] In view of the above problems, the present invention aims to provide a hair oil composition that is less sticky, leaves hair moisturized and manageable, and has excellent dischargeability from a pump-type container. [Means for solving the problem]

[0007] As a result of extensive research in light of the above problems, the present inventors have found that a hair oil composition that can achieve the above object can be obtained by combining the following specific components (A) to (C) in predetermined amounts.

[0008] That is, the present invention provides (A1) 30 to 70 mass% of a hydrocarbon oil having a number average molecular weight of 150 or more and less than 1000, (A2) 0.1 to 10 mass% of a hydrocarbon oil having a number average molecular weight of 1000 or more and 4000 or less, (B) 0.001 to 1 mass% of a 5-membered or 6-membered ring alkyl lactone, (C) A mixture of aminopropyl dimethicone and dimethicone or dimethicone The (A2) / (A1) mass ratio is 0.01 to 0.2, and the pump With dispenser The hair oil composition is filled in a container. [Effects of the Invention]

[0009] The hair oil composition of the present invention has the effect of leaving hair less sticky, moisturized, and manageable, and also has excellent dischargeability from a pump-type container. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment of the present invention will be described. In this specification, a numerical range defined using the symbol "to" is intended to include both the upper and lower limits of the symbol "to." For example, "2 to 5" means 2 or more and 5 or less.

[0011] The hair oil composition of the present invention contains at least (A) a hydrocarbon oil having a number average molecular weight of 150 to 4000, (B) a five- or six-membered ring alkyl lactone, and (C) a silicone oil. Each component will be described below.

[0012] [Component (A): Hydrocarbon oil] The component (A) used in the present invention is a hydrocarbon oil having a number average molecular weight of 150 to 4000, and is a combination of (A1) a hydrocarbon oil having a number average molecular weight of 150 or more and less than 1000, and (A2) a hydrocarbon oil having a number average molecular weight of 1000 or more and 4000 or less.

[0013] The number average molecular weight of the component (A1) is preferably 150-500, more preferably 200-400, and even more preferably 250-300. As the component (A1), one type selected from hydrocarbon oils having a number average molecular weight of 150 or more and less than 1000 can be used alone, or two or more types can be used in combination.

[0014] The number average molecular weight of the component (A2) is preferably 1,200 to 3,500, and more preferably 1,500 to 3,000. As the component (A2), one type selected from hydrocarbon oils having a number average molecular weight of 1000 to 4000 can be used alone, or two or more types can be used in combination. From the viewpoint of dischargeability from a pump-type container, it is preferable to combine (A2-1) a hydrocarbon oil having a number average molecular weight of 1,000 or more and less than 2,000 with (A2-2) a hydrocarbon oil having a number average molecular weight of 2,000 to 4,000. The number average molecular weight of the (A2-1) component is preferably 1200 to 1900, more preferably 1500 to 1800. The number average molecular weight of the (A2-2) component is preferably 2500 to 3500, more preferably 2700 to 3000.

[0015] The mass ratio (A2) / (A1) of the component (A2) to the component (A1) is 0.01 to 0.2, preferably 0.015 to 0.15. If the mass ratio is too small, hair may not be well-mannered, while if the mass ratio is too large, hair may become sticky or dischargeability at low temperatures may be insufficient. When the hydrocarbon oils (A2-1) and (A2-2) are combined, the mass ratio (A2-2) of the component (A2-1) to the component (A2-2), (A2-2) / (A2-1), is preferably 0.01 to 0.5, more preferably 0.05 to 0.3, and even more preferably 0.08 to 0.2.

[0016] The number average molecular weight (Mn) of the hydrocarbon oil can be calculated by gel permeation chromatography (GFC) analysis. Specifically, the analysis is carried out under the following conditions, for example. <Measurement conditions> Column: Shodex KF-805L Developing solvent: THF Flow rate: 1mL / min Injection volume: 100μL Column oven temperature: 40°C

[0017] Examples of hydrocarbon oils include saturated or unsaturated, straight-chain, branched-chain, and cyclic hydrocarbon compounds, and preferred is, for example, hydrogenated polyisobutene obtained by hydrogenating a polymer of isobutene and n-butene.

[0018] In the present invention, commercially available products used as cosmetic raw materials can be used as component (A). Specific examples of such products include "Pearlream 3" (number average molecular weight: 203), "Pearlream 4" (number average molecular weight: 272), "Pearlream EX" (number average molecular weight: 354), and "Pearlream 6" (number average molecular weight: 428) for component (A1); "Pearlream 18" (number average molecular weight: 1242) and "Pearlream 24" (number average molecular weight: 1653) for component (A2-1); and "Pearlream 46" (number average molecular weight: 2893) for component (A2-2). The "Pearlream" series is a hydrogenated polyisobutene manufactured by NOF Corporation.

[0019] The content of the component (A1) is 30 to 70% by mass, preferably 35 to 65% by mass, and more preferably 40 to 65% by mass, based on the total amount of the hair oil composition. If the content of the component (A1) is too low, the hair may become sticky or the pumpability may be insufficient, while if the content of the component (A1) is too high, the hair may become insufficiently manageable.

[0020] The content of the component (A2) is 0.1 to 10% by mass, preferably 0.5 to 8% by mass, and more preferably 1 to 5% by mass, based on the total amount of the hair oil composition. If the content of the component (A2) is too low, hair manageability and pump discharge performance may be insufficient, while if the content of the component (A2) is too high, hair may become sticky.

[0021] [Component (B): 5- or 6-membered ring alkyl lactone] The component (B) used in the present invention is a 5- or 6-membered ring alkyl lactone. The alkyl group in the alkyl lactone may be a linear or branched, saturated or unsaturated hydrocarbon group, but is preferably a saturated hydrocarbon group from the viewpoint of stability. The alkyl group preferably has 12 to 22 carbon atoms, more preferably 14 to 20. Specific examples of alkyl groups having 12 to 22 carbon atoms include dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, icosyl, and docosyl groups.

[0022] As the component (B), one selected from five-membered or six-membered ring alkyl lactones can be used alone, or two or more can be used in combination. From the viewpoint of pump discharge performance, it is preferable to combine two or more, and it is even more preferable to combine a five-membered ring alkyl lactone with a six-membered ring alkyl lactone.

[0023] In the present invention, commercially available cosmetic raw materials can be used as component (B). Specific examples of such products include "Meadow Lactone VE" (Meadowfoam-δ-lactone, a 6-membered alkyl lactone with a linear alkyl group having 15 carbon atoms, manufactured by Ichimaru Pharcos Co., Ltd.) and "Erucalactone MCT" (γ-docosalactone, a 5-membered alkyl lactone with a linear alkyl group having 18 carbon atoms, manufactured by Nippon Fine Chemical Co., Ltd.).

[0024] The content of component (B) is 0.001 to 1% by mass, preferably 0.005 to 0.5% by mass, and more preferably 0.01 to 0.3% by mass, based on the total amount of the hair oil composition. If the content of component (B) is too low, the pump discharge performance may be insufficient, while if the content of component (B) is too high, the hair may become sticky.

[0025] [Component (C): Silicone oil] The component (C) used in the present invention is a silicone oil. Generally, "silicone" refers to a siloxane bond [-Si(R 1 R 2 )-O-] as a skeleton, and an organic group (R 1 R 2 ) is a general term for organopolysiloxane, a polymer of organic silicon compounds to which alkyl groups, vinyl groups, phenyl groups, etc. are bonded. Examples include chain polysiloxanes (e.g., dimethicone (dimethylpolysiloxane), methyl trimethicone, caprylyl methicone, phenyl trimethicone, methylphenylpolysiloxane, diphenylpolysiloxane, etc.); and cyclic polysiloxanes (e.g., octamethylcyclotetrasiloxane, cyclopentasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, etc.). Other examples include various modified silicones in which an amino group, an alkyl group, a polyether group, a cationic group, or the like is introduced into a dimethylpolysiloxane skeleton.

[0026] The silicone oil preferably has a viscosity of 100 to 200,000 m·Pas, and more preferably 200 to 100,000 m·Pas, at 25° C. The viscosity of the silicone oil at 25° C. can be measured using a Brookfield viscometer in accordance with the rotational viscometer method specified in the Quasi-drug Raw Materials Standards.

[0027] In the present invention, commercially available cosmetic raw materials can be used as component (C). Specific examples of such products include "Silicone KF-9029" (dimethicone), "Silicone KF-8020" (a mixture of 20% aminopropyl dimethicone and 80% highly polymerized dimethicone), "Silicone KF-9013" (a mixture of 15% highly polymerized dimethicone and 85% low-viscosity dimethicone), and "Silicone KF-96-1000CS" (dimethicone) (all manufactured by Shin-Etsu Chemical Co., Ltd.).

[0028] The content of the component (C) is 10 to 50% by mass, preferably 15 to 45% by mass, and more preferably 20 to 40% by mass, based on the total amount of the hair oil composition. If the content of the component (C) is too low, the hair may become unmanageable, while if the content of the component (C) is too high, the hair may become sticky.

[0029] [Component (D): fat or oil that is solid at 25°C] The hair oil composition of the present invention preferably further contains (D) a fat or oil that is solid at 25°C. Examples of fat or oil that is solid at 25°C include fats or oils that have a melting point higher than 25°C, preferably a melting point of 26 to 90°C, and more preferably a melting point of 30 to 50°C.

[0030] The component (D) can be any oil commonly used in cosmetics, and can be, for example, a vegetable oil, such as Astrocaryum murumuru seed oil, shea butter, or coconut oil, and can be used alone or in combination of two or more.

[0031] In the present invention, commercially available cosmetic raw materials can be used as component (D). Specific examples of such products include "CROPURE SHEA BUTTER-SO-(JP)" (shea butter, manufactured by Croda Japan Co., Ltd.).

[0032] When the hair oil composition of the present invention contains the above-mentioned component (D), the content thereof is 0.01 to 5 mass%, preferably 0.05 to 1 mass%, and more preferably 0.05 to 0.5 mass%, based on the total amount of the hair oil composition. By containing component (D) in this amount, hair manageability and pump discharge properties at high temperatures are further improved.

[0033] [Other ingredients] The hair oil composition of the present invention is prepared by blending the above-mentioned components (A), (B), and (C) as essential components, optionally further blending component (D), and adding additives such as fragrances and antioxidants as necessary. In addition to components (A) to (D) and additives, other components typically blended into hair oil compositions can be blended depending on the purpose, as long as they do not impair the effects of the present invention. Examples of such other components include nonionic surfactants such as polyoxyethylene alkyl ethers, polyoxyethylene sorbitan fatty acid esters, and glycerin fatty acid esters; cationic surfactants such as stearyltrimethylammonium chloride and alkyltrimethylammonium chloride; higher alcohols such as cetanol and stearyl alcohol; humectants such as glycerin, propylene glycol, butylene glycol, dipropylene glycol, and glycosyl trehalose; higher fatty acids such as stearic acid, behenic acid, oleic acid, isostearic acid, and 2-ethylhexanoic acid; liquid vegetable oils such as olive oil, camellia oil, argan oil, and vegetable squalane; and others such as ultraviolet absorbers, preservatives, sugars, fragrances, colorants, antioxidants, and various chemicals.

[0034] The total content of components (A), (B) and (C) relative to the total amount of the hair oil composition of the present invention is 90% by mass or more, and preferably 95 to 100% by mass.

[0035] The hair oil composition of the present invention can be filled into pump-type, bottle-type, nozzle-type, dropper-type, or aerosol-type containers. However, the hair oil composition of the present invention exhibits little change in discharge properties due to changes in the environment in which it is used, and therefore has the advantage of being less susceptible to problems such as the hair oil being scattered or dripping from the nozzle when discharged from a pump-type container. Therefore, it is preferable to fill the hair oil composition of the present invention into a pump-type container such as a pump dispenser and use it. The material of the container is not particularly limited, and examples include glass containers, polypropylene containers, polyethylene containers, polyester containers, and aluminum containers. [Example]

[0036] The hair oil composition according to the present invention will be specifically described below with reference to examples and comparative examples.

[0037] [Examples 1 to 8 and Comparative Examples 1 to 8] Each hair oil composition of the examples and comparative examples was prepared using the products shown below. Component (A1) *1: "Pearleam 4" (number average molecular weight: 272) (manufactured by NOF Corporation) *2: "Pearleam 3" (number average molecular weight: 203) (manufactured by NOF Corporation) (A2) Component *3: "Pearleam 24" (number average molecular weight: 1653) (manufactured by NOF Corporation) *4: "Pearleam 46" (number average molecular weight: 2893) (manufactured by NOF Corporation) (B) Component *5: "Meadow Lactone VE" (manufactured by Ichimaru Pharcos Co., Ltd.) *6: "Erucalactone MCT" (manufactured by Nippon Fine Chemical Co., Ltd.) (C) Component *7: "Silicone KF-9029" (viscosity 4860 m·Pas at 25°C) (manufactured by Shin-Etsu Chemical Co., Ltd.) *8: "Silicone KF-8020" (viscosity 48,700 m·Pas at 25°C) (manufactured by Shin-Etsu Chemical Co., Ltd.) (D) Component *9: "CROPURE SHEA BUTTER-SO-(JP)" (manufactured by Croda Japan Co., Ltd.) Common ingredients *10: Fragrance 0.4% by mass, tocopherol 0.1% by mass

[0038] [Evaluation of stickiness and manageability] The panel consisted of 10 women (24-59 years old) with ear-to-shoulder length hair and 10 women with hair longer than shoulder length (total of 20 women). An appropriate amount of the hair oil composition, filled in a pump-type container with a 3.0 mm nozzle and a 1.0 ml discharge, was dispensed into the palm of the hand, spread over the entire length of the hair, and then dried with a hair dryer. The hair was then evaluated for (1) low stickiness and (2) manageability according to the following criteria. The total score of the 20 panelists was calculated and judged according to the following criteria. A "◎" or "○" was deemed acceptable.

[0039] (1) Low stickiness Evaluation Criteria 2 points: If your hair does not feel sticky during or after application 1 point: If hair feels slightly sticky during or after application 0 points: If your hair feels sticky during or after application <Judgment criteria> ⊚: Total score is 30 points or more; hair oil composition that does not make hair sticky. ◯: Total score is 20 or more and less than 30 points; the hair oil composition does not make hair sticky. Δ: Total score is 10 or more but less than 20 points; the hair oil composition makes hair slightly sticky. ×: Total score is less than 10 points; the hair oil composition makes hair sticky.

[0040] (2) Good cohesion Evaluation Criteria 2 points: If you feel that the hair is less frizzy and has more volume 1 point: If you feel that the hair is slightly less frizzy and more manageable overall 0 points: If you feel that there is no suppression of frizz or that the hair is not well-groomed <Judgment criteria> ⊚: Total score of 30 points or more; a hair oil composition that gives manageable hair. ◯: Total score is 20 points or more but less than 30 points; this is a hair oil composition that leaves hair somewhat manageable. Δ: Total score is 10 or more but less than 20 points; this is a hair oil composition that leaves hair slightly manageable. ×: Total score less than 10 points; hair oil composition that leaves hair unmanageable.

[0041] (3) Pump discharge (10°C or 30°C) The hair oil composition filled in a pump-type container with a 3.0 mm opening and a 1.0 ml discharge volume was stored in a thermostatic chamber at a specified temperature (10°C or 30°C) for 5 hours. A total of 20 panelists (10 women aged 24-59 years old) with ear-to-shoulder length hair and 10 women with hair longer than shoulder length (20 women in total) were used. Appropriate amounts of the hair oil composition were dispensed from the pump-type container stored at 10°C or 30°C, and discharge properties such as splashing and dripping were evaluated. A "◎" or "○" was deemed acceptable.

[0042] Evaluation Criteria 2 points: If you feel that there was no scattering or dripping when the hair oil composition was dispensed 1 point: If you feel that there was little splashing or dripping when the hair oil composition was dispensed 0 points: If you feel that the hair oil composition is splashing or dripping when it is dispensed <Judgment criteria> ⊚: Total score is 30 points or more; the hair oil composition has good discharge properties from a pump-type container. ◯: Total score is 20 or more but less than 30 points; the hair oil composition has fairly good discharge properties from a pump container. Δ: Total score is 10 or more but less than 20 points; the hair oil composition is slightly poorly discharged from a pump container. ×: Total score is less than 10 points; the hair oil composition has poor dischargeability from a pump-type container.

[0043] [Table 1]

[0044] [Table 2]

[0045] As shown in Table 1, the hair oil compositions of Examples 1 to 8 were less sticky, left hair moisturized and manageable, and also had excellent dischargeability from a pump container. In particular, the hair oil composition of Example 8, which further contained shea butter as component (D), received the highest evaluations for less stickiness, manageability, and pump dischargeability at both low and high temperatures.

[0046] In contrast, the hair oil composition of Comparative Example 1, which contained too much component (A1), had poor manageability and poor pump discharge properties at both low and high temperatures. The hair oil composition of Comparative Example 2, which contained too much component (A2), left hair sticky and had poor pump discharge properties at low temperatures. The hair oil composition of Comparative Example 3, which did not contain component (B), had poor pump discharge properties at both low and high temperatures. The hair oil composition of Comparative Example 4, which did not contain component (C), lacked hair manageability and exhibited poor pump discharge properties at high temperatures, while the hair oil composition of Comparative Example 5, which contained too much component (C), left hair sticky and exhibited poor pump discharge properties at low temperatures. The hair oil composition of Comparative Example 6, which did not contain the components (A2) and (B), made hair sticky, lacked hair manageability, and had poor pump discharge properties at both low and high temperatures.

[0047] [Prescription example] Furthermore, a formulation example of a hair oil composition of the present invention is shown below in Table 3. Note that hydrogenated polyisobutene (number average molecular weight 272) is component (A1), hydrogenated polyisobutene (number average molecular weight 1653) is component (A2-1), hydrogenated polyisobutene (number average molecular weight 2893) is component (A2-2), meadowfoam-δ-lactone and γ-docosalactone are components (B), dimethicone (viscosity 4860 mPa s) is component (C), and shea butter is component (D). Like the Examples, this formulation example was less sticky, gave moist and manageable hair, and also had excellent discharge properties from a pump-type container.

[0048] Table 3

Claims

1. (A1) 30 to 70% by mass of a hydrocarbon oil having a number average molecular weight of 150 or more and less than 1,000, (A2) 0.1 to 10% by mass of a hydrocarbon oil having a number average molecular weight of 1,000 or more and 4,000 or less, (B) 0.001 to 1 mass% of a 5-membered or 6-membered ring alkyl lactone, (C) A mixture of aminopropyl dimethicone and dimethicone or 10 to 50% by mass of dimethicone The hair oil composition contains the above-mentioned components, and has an (A2) / (A1) mass ratio of 0.01 to 0.2, and is filled in a container with a pump dispenser.

2. 2. The hair oil composition according to claim 1, further comprising (D) 0.01 to 5% by mass of an oil or fat that is solid at 25°C.

Images