Hair cosmetic

Abstract

To provide a hair cosmetic that exhibits good usability both at the time of rinsing and after drying.SOLUTION: A hair cosmetic comprising the following components (A) and (B): (A) pentaerythrityl tetraisostearate, and (B) two or more selected from diesters of dimer acid and / or dimer diol, esters of dibasic acid, and lactone derivatives.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a hair cosmetic composition. [Background technology]

[0002] Hair is easily damaged by the effects of ultraviolet rays, heat from a hair dryer, brushing, washing, etc., and becomes difficult to run your fingers through. Furthermore, while the use of perms, hair coloring, bleaching, etc. has become common in recent years, hair damage such as dryness and loss of elasticity caused by these chemical treatments has also become a problem. Various hair cosmetics have been disclosed to prevent hair damage and improve hair feel (Patent Document 1, Patent Document 2). In recent years, many non-silicone hair cosmetics have been sold and have become popular, but they still have issues with the ease of running your fingers through your hair when rinsing and the manageability of your hair after drying. Although technologies for imparting smoothness and manageability to hair have been improving year by year, there is a demand for hair cosmetics with better effects and hair cosmetics with a better feel in use, and further progress is desired. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6539071 [Patent Document 2] Patent No. 6433372 Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present invention is to provide a hair cosmetic that gives a good feeling when used during rinsing and after drying. [Means for solving the problem]

[0005] The present invention provides a hair cosmetic composition containing the following (A) and (B): (A) Pentaerythrityl tetraisostearate (B) two or more selected from diesters of dimer acid and / or dimer diol, esters of dibasic acids, and lactone derivatives [Effects of the Invention]

[0006] The hair cosmetic composition of the present invention exhibits the effect of providing a good feeling when used upon rinsing and after drying. DETAILED DESCRIPTION OF THE INVENTION

[0007] The hair cosmetic composition of the present invention is characterized by not containing silicone.

[0008] <Component (A)> [Pentaerythrityl tetraisostearate] The pentaerythrityl tetraisostearate used in the present invention is a tetraester of pentaerythritol and isostearic acid. Any product typically used in hair cosmetics can be used without any particular limitation. Commercially available products can also be used, such as CRODAMOL PTIS-LQ-(MV) (manufactured by Croda Pharmaceuticals), Esterol PT-ISHV (manufactured by National Mimatsu Co., Ltd.), and Salacos 5418V (manufactured by Nisshin Oillio Group, Ltd.).

[0009] The amount of pentaerythrityl tetraisostearate used in the present invention is not particularly limited, but is preferably 0.2 to 10% by mass, and more preferably 0.5 to 8% by mass, based on the total amount of the hair cosmetic. If it is less than 0.2% by mass, sufficient effects may not be obtained. If it is added in an amount exceeding 10% by mass, the product may feel sticky.

[0010] <Ingredient (B)> [Diester of dimer acid and / or dimer diol] The diester of dimer acid and / or dimer diol used in the present invention refers to esters of dimer acid and various alcohols obtained by dimerizing mono- or di-unsaturated fatty acids and then hydrogenating them as necessary, esters of dimer diol and various fatty acids obtained by reducing dimer acids, and esters of dimer acid and dimer diol. Examples of such esters include di(phytosteryl / isostearyl / cetyl / stearyl / behenyl) dimer dilinoleate, di(isostearyl / phytosteryl) dimer dilinoleate, dilinoleyl diisostearate, and dimer dilinoleyl bis(behenyl / isostearyl / phytosteryl) dimer dilinoleate. Any esters typically used in hair cosmetics and the like can be used without any particular limitation. Commercially available products can also be used, such as "Plandool (registered trademark)-H" as di(phytosteryl / isostearyl / cetyl / stearyl / behenyl) dimer dilinoleate, "LUSPLAN (registered trademark) PI-DA" as di(isostearyl / phytosteryl) dimer dilinoleate, "LUSPLAN (registered trademark) DD-DA5" and "LUSPLAN (registered trademark) DD-DA7" as dimer dilinoleyl dimer dilinoleate, "LUSPLAN (registered trademark) DD-IS" as dimer dilinoleyl diisostearate, and "Plandool (registered trademark)-G" as dimer dilinoleyl bis(behenyl / isostearyl / phytosteryl) dimer dilinoleate (all manufactured by Nippon Fine Chemical Co., Ltd.). These can be purchased and used. Among these, it is preferable to use dimer dilinoleyl dimer dilinoleate from the viewpoint of effectiveness.

[0011] The amount of dimer acid and / or dimer diol diester to be incorporated into the hair cosmetic of the present invention is not particularly limited, but is 0.01 to 20% by mass, preferably 0.05 to 15% by mass, based on the total amount of the hair cosmetic. If the amount is less than 0.01% by mass, the effect may not be fully exerted. If the amount is more than 20% by mass, the hair may tend to feel sticky.

[0012] [Esters of dibasic acids] Specific examples of the dibasic acid ester used in the present invention include esters of oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, malic acid, fumaric acid, maleic acid, phthalic acid, tartaric acid, brassylic acid, etc. Generally, any ester used in hair cosmetics can be used without any particular limitation, and these may be contained alone or in combination of two or more. Among these, succinic acid diesters are preferably used from the viewpoint of effectiveness.

[0013] Specific examples of succinic acid diesters include diethylhexyl succinate, diethoxyethyl succinate, diethyl succinate, and dimethyl succinate. Among these, it is more preferable to use diethylhexyl succinate from the viewpoint of effectiveness. Commercially available products can also be used, and examples of diethylhexyl succinate include Crodamol OSU, Ultimopure Crodamol OSU (both manufactured by Croda Japan), FineNeo-EHSU (manufactured by Nippon Fine Chemical Co., Ltd.), and KAK DIOS (manufactured by Kokyu Alcohol Kogyo Co., Ltd.).

[0014] The amount of dibasic acid ester to be incorporated into the hair cosmetic composition of the present invention is not particularly limited, but is 0.01 to 15% by mass, preferably 0.1 to 10% by mass, and more preferably 0.5 to 7% by mass, based on the total amount of the hair cosmetic composition. If the amount is less than 0.01% by mass, the effect may not be fully exerted. If the amount exceeds 15% by mass, the hair tends to feel heavy to the touch.

[0015] [Lactone derivatives] Examples of lactone derivatives used in the present invention include γ-lactone derivatives having a five-membered ring and δ-lactone derivatives having a six-membered ring. These lactone derivatives are preferably derivatives in which a linear or branched, saturated or unsaturated hydrocarbon group having 9 to 22 carbon atoms is added (substituted for hydrogen) to one of the carbon atoms constituting the five- or six-membered ring. From the viewpoint of stability, a saturated hydrocarbon group is even more preferable. Specific examples include nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, eicosyl, heneicosyl, and docosyl groups. Specific examples of the lactone derivatives include γ-docosalactone, meadowfoam-δ-lactone, mevalonolactone, and gluconolactone. These lactone derivatives can be used alone or in combination of two or more. Among these, γ-docosalactone is preferred from the viewpoint of effectiveness. Commercially available products can also be used, such as NanoRepair-EL, erucalactone DES, and erucalactone MCT (all manufactured by Nippon Fine Chemical Co., Ltd.).

[0016] The amount of lactone derivative to be blended in the hair cosmetic of the present invention is not particularly limited, but is 0.001 to 3 mass% of the total amount of the hair cosmetic, and more preferably 0.01 to 2 mass%. If it is less than 0.001 mass%, the effect may not be fully exerted. If it exceeds 3 mass%, the hair tends to feel sticky.

[0017] [Other optional ingredients] The hair cosmetic composition of the present invention can contain various components other than components (A) and (B) that can be used in ordinary hair cosmetics, provided that the effects of the present invention are not impaired. For example, a nonionic surfactant (component (C)), a cationic polymer (component (D)), a pH adjuster (component (E)), a vegetable oil (component (F)), a wax (component (G)), water as a solvent (component (H)), and the like can be used in appropriate combination.

[0018] <Ingredient (C)> Component (C) is a nonionic surfactant. There are no particular limitations on the nonionic surfactant as long as it can be incorporated into hair cosmetics, but from the perspective of usability, it is preferable to use a hydrophilic nonionic surfactant with an HLB value of 8 or more. Specific examples of such hydrophilic nonionic surfactants include glycerin fatty acid esters and their alkylene glycol adducts, polyglycerin fatty acid esters and their alkylene glycol adducts, propylene glycol fatty acid esters and their alkylene glycol adducts, sorbitan fatty acid esters and their alkylene glycol adducts, sorbitol fatty acid esters and their alkylene glycol adducts, and polyalkylene glycol fatty acid esters.

[0019] <Ingredient (D)> Component (D) is a cationic polymer. There are no particular limitations on the cationic polymer as long as it can be incorporated into hair cosmetics, and examples include cationized hydroxyethyl cellulose, cationized guar gum, cationized locust bean gum, dimethyldiallyl chloride-acrylamide copolymer, and acrylamide-acrylic acid-dimethyldiallylammonium chloride copolymer.

[0020] <Ingredient (E)> It is preferable to use a pH adjuster as component (E). The pH adjuster is not particularly limited, but examples thereof include inorganic bases such as potassium hydroxide, sodium hydroxide, and sodium carbonate; organic bases such as triethanolamine, diisopropanolamine, and triisopropanolamine; inorganic acids such as hydrochloric acid and sulfuric acid; and organic acids such as lactic acid, sodium lactate, citric acid, sodium citrate, succinic acid, and sodium succinate. These may be used alone or in combination of two or more.

[0021] <Component (F)> Component (F) is a vegetable oil primarily composed of triglycerides obtained from plants. The vegetable oil is not particularly limited as long as it can be incorporated into hair cosmetics, and examples thereof include olive oil, camellia oil, shea butter, almond oil, safflower oil, sunflower oil, soybean oil, cottonseed oil, sesame oil, corn oil, rapeseed oil, rice bran oil, rice germ oil, grape seed oil, avocado oil, macadamia nut oil, castor oil, and palm oil.

[0022] <Ingredients (G)> Component (G) is a wax, which is an ester of a higher fatty acid and a higher alcohol. The wax is not particularly limited as long as it can be incorporated into hair cosmetics, and examples thereof include beeswax, candelilla wax, carnauba wax, jojoba oil, and lanolin. Jojoba oil is particularly preferred.

[0023] <Component (H)> Component (H) is water, which serves as a solvent, and can be ion-exchanged water, distilled water, deionized water, purified water, hot spring water, deep-sea water, etc. The amount of component (H) is, for example, 5 to 90% by mass based on the total amount of the hair cosmetic composition of the present invention, and is preferably adjusted to an amount suitable for achieving the desired feel upon use.

[0024] In addition to the above-mentioned components, the hair cosmetic composition of the present invention may contain optional components used in conventional hair cosmetics to the extent that the effects of the present invention are not impaired. Specific examples of such optional components include thickeners, preservatives, fragrances, moisturizers, antioxidants, anti-inflammatory agents, and antibacterial agents.

[0025] The hair cosmetic composition of the present invention can be produced by a conventional method and may be in the form of a liquid, cream, or the like, and filled into various containers such as plastic containers, aluminum tube containers, and pouch containers.

[0026] The hair cosmetic composition of the present invention can be made into products such as hair rinses, hair conditioners, hair treatments, hair packs, hair creams, and hair colors.

[0027] The hair cosmetic composition of the present invention is preferably used after washing the hair with shampoo, etc. After application, it is also preferable to rinse off any excess hair cosmetic composition remaining on the hair before use. [Example]

[0028] The present invention will be described in more detail below with reference to examples, but the scope of the present invention is not limited thereto. The blending amounts are in mass % unless otherwise specified.

[0029] The hair cosmetics of the Examples and Comparative Examples shown in Tables 1 and 2 were prepared by a standard method.

[0030] The hair cosmetics of each Example and Comparative Example were evaluated for feel in use by the following method, and the results are shown in Tables 1 and 2.

[0031] Feel (smoothness, moisturizing, manageability) A sensory evaluation was conducted by three expert panelists. Commercially available hair (1 g, 10 cm, Bealux, product number BS-BA) was thoroughly wetted with water, and then the hair bundle was squeezed with the hands to squeeze out the water. 5 g of the hair cosmetics shown in Tables 1 and 2 were applied to the hair bundle, and the hair was blended by hand combing, and then thoroughly rinsed with running water at 40°C. The hair was then towel-dried and dried with a hair dryer. Absolute evaluations were made by consensus on the ease of running the fingers through the hair and moisturizing feel upon rinsing, as well as the moisturizing feel and manageability of the hair after drying, according to the following evaluation criteria. <Judgment criteria> ◎: Very good ○:Good △: Bad ×: Very bad

[0032] [Table 1]

[0033] [Table 2]

[0034] As shown in Table 1, Examples 1 to 4, which used a combination of pentaerythrityl tetraisostearate and two or more selected from diesters of dimer acid and / or dimer diol, esters of dibasic acids, and lactone derivatives, showed good results in terms of ease of running fingers through the hair and moist feeling after rinsing, as well as moist feeling and manageability of the hair after drying.

[0035] On the other hand, Comparative Examples 1 to 12 shown in Table 2 did not provide good results in at least two or more evaluation items.

[0036] From the above results, the hair cosmetic composition of the present invention exhibits the effect of providing a good feeling when used during rinsing and after drying.

Claims

[Claim 1] A hair cosmetic composition comprising the following (A) and (B): (A) Pentaerythrityl tetraisostearate (B) two or more selected from diesters of dimer acid and / or dimer diol, esters of dibasic acids, and lactone derivatives

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