JP6092038B2 - Emulsified composition - Google Patents

Description

  The present invention relates to an emulsified composition.

Astaxanthin and lycopene, which are carotenoids, are known to have functions such as an antioxidant effect, an anti-inflammatory effect, an anti-skin aging effect, a stain or wrinkle formation preventing effect, and various compositions such as foods and cosmetics. (For example, refer patent document 1).
However, carotenoids are easily affected by oxidation, and improvement of storage stability has been an issue. When such a carotenoid is contained in the emulsion composition, application to a relatively high hardness emulsion composition is desired in order to effectively utilize the characteristics of the carotenoid.
As one of high-hardness emulsified compositions, a white gel based on an aggregate of water, a surfactant, and a higher alcohol, an emulsified composition generally referred to as α-gel, has attracted attention. In α-gel, stability over time is one of the important factors, and it has been a problem that hardness decreases or increases over time.

  Conventionally, a higher alcohol, which is an important component of an α-gel, is generally used in combination of two or more types for the purpose of improving the coating feeling of the emulsion composition or improving the stability. However, depending on the blending composition ratio of the higher alcohol, there is a problem that an unstable structure due to a mixed crystal of higher alcohols is generated over time and the hardness is increased.

International Publication 2013/002278 Pamphlet

  The occurrence of the unstable structure described above results in a change in oil droplet size in the α-gel structure. According to the study by the present inventors, not only does the hardness of the gel, that is, the hardness of the emulsion composition, change due to the change in the oil droplet size, but in particular, the carotenoid having a red color is present in the emulsion composition. It has been found that the color change of the composition appears remarkably when it coexists with. Remarkable color change becomes a serious problem in the appearance of the emulsion composition, and even if it contains carotenoid as an active ingredient, it is important to suppress the color change due to the change in fine structure, especially stability over time. It has been found.

  An object of the present invention in consideration of solving the problems of the above-described technology is to provide an emulsion composition that is excellent in storage stability by suppressing changes in hardness and color change over time in an emulsion composition containing carotenoids. It is to provide.

As a result of intensive studies to solve the above problems, the present inventors prepared an emulsion composition containing two or more higher alcohols having different carbon chain lengths, a cationic surfactant, and a cationic polymer. However, it has been found that the hardness stability of the emulsified composition over time is improved, and in addition, the change in color can be suppressed. The present invention has been completed based on these findings.
The configuration of the present invention is as follows.

[1] (A) carotenoid, (B) two or more higher alcohols having different carbon chain lengths selected from higher alcohols having 16 to 22 carbon atoms, (C) a cationic surfactant, and (D) comprising a cationic polymer;
(A) the carotenoid is astaxanthin, and
An emulsified composition that satisfies the following conditions (1) to (3).
(1) The content of the higher alcohol having 22 carbon atoms with respect to the total content of the higher alcohol contained in the emulsion composition is 40% by mass or less.
(2) The content of the higher alcohol having 18 carbon atoms with respect to the total content of the higher alcohol contained in the emulsion composition is 10% by mass or more and 70% by mass or less.
(3) The content of the higher alcohol having 16 carbon atoms with respect to the total content of the higher alcohol contained in the emulsion composition is 90% by mass or less .
[2] (B) Two or more types of higher alcohols having different carbon chain lengths selected from higher alcohols having 16 to 22 carbon atoms include at least 18 higher alcohols. Emulsified composition.

[3] (B) The total content of two or more higher alcohols having different carbon chain lengths selected from higher alcohols having 16 to 22 carbon atoms is 0.1% by mass relative to the emulsion composition. The total content of two or more higher alcohols having different carbon chain lengths selected from (B) higher alcohols having 16 to 22 carbon atoms and (B) a carbon number of 16 to 22% by mass. The emulsified composition according to [1] or [2], wherein the content of the higher alcohol is 40 % by mass or less.
[4] In any one of [1] to [3], the content of (C) the cationic surfactant is 0.3% by mass to 5.0% by mass with respect to the total amount of the emulsified composition. The emulsified composition as described.
[5] (D) The content of the cationic polymer is 0.01% by mass to 3.0% by mass with respect to the total amount of the emulsified composition, according to any one of [1] to [4]. Emulsified composition.
[6] The emulsified composition according to any one of [1] to [5], which is for hair.

  ADVANTAGE OF THE INVENTION According to this invention, the emulsion change containing a carotenoid can suppress the change of the hardness over time, and a color change, and can provide the emulsion composition excellent in storage stability.

The emulsified composition of the present invention comprises (A) carotenoid and (B) two or more higher alcohols (hereinafter simply referred to as “(B ) Higher emulsion), (C) a cationic surfactant, and (D) a cationic polymer.
The emulsified composition can have various appearances from transparent gel to milky white depending on the size of the emulsified particles. When a red carotenoid is contained here, the problem that the change in hue due to the size change of the emulsified particles becomes more remarkable than when no carotenoid is contained is found, and at least two kinds of chain lengths different from each other are found. By combining a higher alcohol, a cationic surfactant and a cationic polymer, stability over time, in particular, changes in hardness and hue due to changes in the size of the emulsified particles are effectively suppressed.

  Although the action of the present invention is not clear, the emulsified composition contains two or more types of higher alcohols having relatively long carbon chains and different carbon chain lengths. It is considered that the crystallization is suppressed, the stability of the hardness over time is improved, and the change in hue due to the structural change is effectively suppressed. In particular, in a preferred embodiment of the present invention, by containing at least a higher alcohol having 18 carbon atoms and (B) the content of the higher alcohol having 22 carbon atoms with respect to the total content of the higher alcohol is 60% by mass or less. It is estimated that the stability in the emulsion composition is further improved.

In the present specification, a numerical range indicated using “to” indicates a range including the numerical values described before and after “to” as the minimum value and the maximum value, respectively.
Further, in the present specification, the amount of each component in the composition is the total amount of the plurality of substances present in the composition unless there is a specific indication when there are a plurality of substances corresponding to each component in the composition. Means.
Hereinafter, embodiments of the present invention will be described more specifically.

[(A) Carotenoid]
The carotenoid (A) used in the emulsified composition of the present invention is a natural antioxidant component, and can, for example, eliminate active oxygen and suppress unwanted oxidation of lipids.

  Carotenoids are yellow to red terpenoid pigments, and examples thereof include those derived from plants, algae, and bacteria. Further, the carotenoid is not limited to those derived from nature, and any carotenoid may be used as long as it is obtained according to a conventional method.

Specific examples of the carotenoid in the present invention include lycopene, α-carotene, β-carotene, γ-carotene, δ-carotene, actinioerythrol, bixin, canthaxanthin, capsorubin, β-8′-apo-carotenal ( Apocarotenal), β-12′-apo-carotenal, xanthophylls (for example, astaxanthin, fucoxanthin, lutein, zeaxanthin, capsanthin, β-cryptoxanthin, violaxanthin, and the like) and hydroxy or carboxy derivatives thereof.
You may use these individually or in combination of 2 or more types.
Especially, it is preferable that it is a carotenoid which has an active oxygen removal effect from a viewpoint of generation | occurrence | production suppression of lipid peroxide. Such a carotenoid is preferably astaxanthin, lycopene, β-carotene or the like, more preferably at least one selected from the group consisting of astaxanthin and lycopene, and particularly preferably astaxanthin.

Astaxanthin encompasses at least one of derivatives such as astaxanthin and esters of astaxanthin. In the present invention, unless otherwise specified, these are collectively referred to as “astaxanthin”.
Astaxanthin may be contained in the emulsion composition of the present invention as an astaxanthin-containing oil which is separated or extracted from a natural product containing astaxanthin. Astaxanthin may be a product obtained by separating or extracting the natural product from the natural product and purifying it as necessary, or may be a synthetic product.
When astaxanthin is contained in the emulsified composition, there are a method in which it is dissolved in ethanol and a method in which it is solubilized in an oil phase with a solubilizer or the like. Moreover, after making it melt | dissolve in the oil in which astaxanthin melt | dissolves, there exists the method of adding to an emulsion composition by emulsifying together with a water phase.

Astaxanthin can be used as long as it is obtained according to a conventional method in addition to natural products such as plants, algae, crustaceans and bacteria.
Examples of natural astaxanthin include red yeast faffia, hematococcus algae, marine bacteria, and krill. Moreover, the extract etc. from the culture can be mentioned, and those extracted from Haematococcus algae (also referred to as Haematococcus algae extract) and pigments derived from krill are from the point of quality or productivity. Particularly preferred.

  As astaxanthin, a commercially available Haematococcus alga extract or krill extract may be used. Examples of the hematococcus algae extract include ASTOTS-S, ASTOTS-ST, ASTOTS-2.5 O, ASTOTS-5 O, and ASTOTS-10 O manufactured by Takeda Kaiki Co., Ltd., Fuji Chemical Industry Co., Ltd. Asteryl Oil 50F, Asteryl Oil 5F, etc., and BioAsin SCE7 manufactured by Toyo Enzyme Chemical Co., Ltd. are available. As a krill extract, Astax ST Co., Ltd. manufactured by Itano Frozen Co., Ltd. can be obtained.

  The content of astaxanthin in the Haematococcus alga extract or krill extract that can be used in the present invention is preferably 0.001% by mass to 50% by mass from the viewpoint of handling during composition production. Preferably, it is 0.01 mass%-25 mass%.

  The content of the carotenoid emulsified composition is preferably 0.000001% by mass to 0.01% by mass, and 0.00001% by mass to 0.0075% by mass from the viewpoint of obtaining the effect expected of the carotenoid content. More preferably, 0.0001 mass% to 0.005 mass% is still more preferable. If it is 0.000001 mass% or more, the active oxygen removal effect tends to be sufficiently obtained, and from the viewpoint of appearance during use, it is preferably 0.01 mass% or less.

[(B) Two or more higher alcohols having different carbon chain lengths selected from higher alcohols having 16 to 22 carbon atoms]
In the present invention, “higher alcohol” refers to an alcohol having an alkyl chain length of 16 to 22 carbon atoms. Here, the alkyl group may be branched, but is preferably linear from the viewpoint of the storage stability of the emulsion composition.
The example of the higher alcohol used for this invention is given. Those with common names are also listed.
Specifically, for example, hexadecanol (carbon number 16: common name: cetyl alcohol), heptadecanol (carbon number 17), octadecanol (carbon number 18: stearyl alcohol), nonadecanol (carbon number 19), Examples include icosanol (carbon number 20: aralkyl alcohol), heicosanol (carbon number 21), docosanol (carbon number 22: behenyl alcohol), and the like. Among these, two or more types having different carbon chain lengths can be selected and used. The combination of two or more higher alcohols and the content ratio of the higher alcohol used in combination with respect to all (B) higher alcohols can be appropriately selected and used.
Among these, the higher alcohols preferably include hexadecanol (cetyl alcohol, cetanol), octadecanol (stearyl alcohol), and docosanol (behenyl alcohol), and two or three of them are selected. An embodiment that is selected and used is preferred.

The higher alcohol preferably contains at least one higher alcohol having 18 carbon atoms as two or more higher alcohols having different carbon chain lengths.
Moreover, although it is also a preferable aspect to contain a C22 higher alcohol, it is preferable that content of a C22 higher alcohol is 60 mass% or less with respect to the whole quantity of the higher alcohol contained in an emulsion composition. preferable. More preferably, they are 1.0 mass% or more and 50 mass% or less, and it is more preferable that they are 2.0 mass% or more and 30 mass% or less.

More specifically, examples of the combination of two or more higher alcohols having different carbon chain lengths in the present invention include the following combinations. In addition, content (content ratio) shown below is a content ratio with respect to the whole quantity (total content) of the higher alcohol contained in an emulsion composition.
As the above combination, it is preferable that two kinds of higher alcohol having 22 carbon atoms and higher alcohol having 18 carbon atoms are included.
For example, a combination containing 60 mass% or less of a higher alcohol having 22 carbon atoms, 10 mass% or more and 70 mass% or less of a higher alcohol having 18 carbon atoms, and less than 100 mass% of a higher alcohol having 16 carbon atoms.
Further, as a more preferable combination, a combination containing a higher alcohol having 22 carbon atoms, 50 mass% or less, a higher alcohol having 18 carbon atoms, 10 mass% or more and 70 mass% or less, and a higher alcohol having 16 carbon atoms, less than 60 mass%. is there.
By including two or more higher alcohols having different carbon chain lengths in this combination and content, an unstable structure due to a mixed crystal of higher alcohols can be more effectively suppressed.

  In the present invention, the content of the (B) higher alcohol is preferably in the range of 0.1% by mass to 15% by mass, more preferably the total amount of the two or more higher alcohols, with respect to the total amount of the emulsified composition. It is in the range of 2% by mass to 15% by mass. When the total content of (B) the higher alcohol having 16 to 22 carbon atoms in the emulsified composition is in the above range, the effect of the present invention becomes more excellent.

[(C) Cationic surfactant]
The emulsified composition of the present invention contains (C) a cationic surfactant. (C) By containing a cationic surfactant, the emulsion composition has excellent hardness stability over time. (C) As the cationic surfactant, known ones can be used as appropriate, and specific examples thereof include alkyltrimethylammonium salts such as stearyltrimethylammonium chloride and lauryltrimethylammonium chloride, and alkyls such as cetylpyridinium chloride. Pyridinium salts, dialkyldimethylammonium salts such as distearyldimethylammonium chloride, poly (N, N′-dimethyl-3,5-methylenepiperidinium chloride), monoalkyl quaternary ammonium salts, dialkyl quaternary ammonium salts, alkyldimethyl Benzyl ammonium salt, alkylisoquinolinium salt, dialkyl morpholinium salt, alkylamine salt such as polyoxyethylene-alkylamine, polyamine fatty acid derivative, amyl alcohol fatty acid derivative, benzalkonium chloride And benzethonium chloride.

  Among them, preferred are dialkyl quaternary ammonium salts and monoalkyl quaternary ammonium salts, and as dialkyl quaternary ammonium salts, preferred are dicocodimonium chloride chlorides, and as monoalkyl quaternary ammonium salts, An alkyltrimethylammonium chloride is mentioned as a preferable thing. More specifically, examples include behenyltrimethylammonium chloride, lauryltrimethylammonium chloride, and stearyltrimethylammonium chloride, with stearyltrimethylammonium chloride being preferred.

The content of the (C) cationic surfactant in the emulsion composition of the present invention preferably includes 0.3% by mass to 5.0% by mass, and 0.5% by mass to 0.5% by mass with respect to the total amount of the emulsion composition. More preferably, it contains 3.0% by mass.
Setting the content of the cationic surfactant within the above range is preferable because the stability of the emulsion composition is suitably maintained, the feeling of use becomes good, and the problem of skin irritation hardly occurs.

[(D) Cationic polymer]
The emulsified composition of the present invention contains (D) a cationic polymer. (D) By containing a cationic polymer, the stability of the α-gel state in the emulsion composition is improved, and the hardness stability and hue stability with time are excellent.

  (D) As a cationic polymer, a well-known compound can be used suitably. Among these, water-soluble cationic polymers are preferable, for example, cellulose polymers such as methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose, or compounds obtained by cationically modifying water-soluble acrylic acid polymers, such as guar gum Examples thereof include compounds obtained by cationically modifying polysaccharides.

More specifically, examples of the (D) cationic polymer that can be used in the present invention include cationic cellulose such as polyquaternium-10, diallyldimethylammonium chloride / acrylamide copolymer such as polyquaternium-7, and polyquaternium-22. Acrylic acid / diallyldimethylammonium chloride copolymer such as polyquaternium-39, acrylic acid / diallyldimethylammonium chloride / acrylamide copolymer, acrylic acid / cationized methacrylic acid ester copolymer, acrylic acid / cationized meta Acrylic acid amide copolymer, acrylic acid / methyl acrylate / methacrylamidopropyltrimethylammonium chloride copolymer such as polyquaternium-47, chloromethacrylic acid choline ester polymer; Cationic polysaccharides such as sucrose, cationized dextran, guar hydroxypropyltrimonium chloride; polyethyleneimine; cationic polymer; 2-methacryloyloxyethyl phosphorylcholine polymer such as polyquaternium-51 and butyl methacrylate copolymer A copolymer etc. are mentioned.
Among these, cationized cellulose such as polyquaternium-10, diallyldimethylammonium chloride / acrylamide copolymer such as polyquaternium-7, and acrylic acid / diallyldimethylammonium chloride copolymer such as polyquaternium-22 are preferable.

The content of the cationic polymer (D) with respect to the emulsion composition of the present invention preferably includes 0.01% by mass to 3.0% by mass, and more preferably 0.05% by mass with respect to the total amount of the emulsion composition. It is the range of -1.0 mass%.
By setting the content of the cationic polymer in the above range, the feeling of use of the emulsified composition is improved, and for example, when used on hair, it is difficult to cause stiffness and the like, which is preferable.

The emulsified composition of the present invention can be used in combination with various compounds in addition to the essential components (A) to (D) as long as the effects of the present invention are not impaired.
For example, when the emulsified composition of the present invention is used for hair cosmetics, it can contain a treatment agent. Although it does not specifically limit as a treatment agent, The 1 or more types selected from silicone, hydrolyzed protein, and the oil component different from said (B) higher alcohol can be used.

The oil can be selected from those generally used in cosmetics as long as the stability is not impaired. Examples of desirable oils include polar oils such as hydrocarbon oils and ester oils, silicone oils, and liquid oils that are liquid at room temperature.
As the hydrocarbon oil, for example, liquid paraffin, squalane, squalene, paraffin, isoparaffin, ceresin and the like can be used.

Examples of the silicone oil include chain silicones such as dimethylpolysiloxane, methylphenylpolysiloxane, and methylhydrogenpolysiloxane, and cyclic silicones such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane. Can be mentioned.
Also, although not included in silicone oil, a relatively high molecular weight silicone compound such as silicone resin or silicone rubber forming a three-dimensional network structure is dissolved or dispersed in silicone oil and used as a treatment agent. Also good.

  Examples of polar oils such as ester oils include pentaerythrityl tetraethylhexanoate, cetyl ethylhexanoate, jojoba oil, dilauroyl glutamate (phytosteryl / octyldodecyl), triisostearin, glyceryl diisostearate, triethylhexanoin, dimerlinol Acid (phytosteryl / behenyl), dimer linoleic acid (phytosteryl / isostearyl / cetyl / stearyl / behenyl), isopropyl palmitate, macadamia nut fatty acid phytosteryl, tetra (behenic acid / benzoic acid / ethylhexanoic acid) pentaerythrityl, palmitic acid Ethylhexyl, myristyl myristate, tripropylene glycol dipivalate, etc. can be used.

  Examples of liquid oil include linseed oil, camellia oil, macadamia nut oil, corn oil, mink oil, olive oil, avocado oil, sasanqua oil, castor oil, safflower oil, sunflower oil, almond oil, rapeseed oil, sesame oil, soybean oil , Peanut oil, triglycerin, glycerin trioctanoate, glycerin triisopalmitate and the like.

When using the oil as the treatment agent in the emulsion composition of the present invention, only one type may be used, or two or more types may be used.
Further, the content is not particularly limited as long as the effects of the present invention are not impaired, but the content is preferably about 5% by mass to 30% by mass with respect to the total amount of the emulsion composition. When the amount is 5% by mass or more, the effect of the treatment agent addition is sufficiently obtained, and when the amount is 30% by mass or less, there is no fear of destabilization due to the addition, and the feeling of use is also improved.

  In addition, the emulsion composition of the present invention includes various active ingredients commonly used in emulsion compositions, for example, pearl luster materials, preservatives, antioxidants, pigments, thickeners, or the like, if necessary. One or more selected from pH adjusters can be used. Hair dyes, fragrances, antibacterial agents, softeners, moisturizers, ultraviolet absorbers, active oxygen scavengers, antioxidants, antimicrobial agents, hair restorers, minerals, amino acids can be added.

  Specific examples are listed as nacreous materials that can be used in the present invention, but the present invention is not limited to these compounds. Examples thereof include ethylene glycol distearate, ethylene glycol monostearate, mica coated with guanine and titanium dioxide, bismuth oxychloride, and monoethanolamide stearate.

Specific examples are listed as preservatives that can be used in the present invention, but the present invention is not limited to these compounds.
Examples of preservatives include benzoic acid, sodium benzoate, paraben, ethyl paraben, methyl paraben, propyl paraben, butyl paraben, potassium sorbate, sodium sorbate, sorbic acid, sodium dehydroacetate, hydrogen peroxide, formic acid, ethyl formate. , Sodium dichlorite, propionic acid, sodium propionate, calcium propionate, pectin degradation product, polylysine, phenol, isopropylmethylphenol, orthophenylphenol, phenoxyethanol, resorcin, dibutylhydroxytoluene (BHT), thymol, thiram, tea tree Oil, hinokitiol, glycerin, dipropylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, 1,2 pentanediol, 2-methyl 2,4-pentanediol, and the like.

Specific examples are listed as antioxidants that can be used in the present invention, but the present invention is not limited to these compounds.
Examples of antioxidants include vitamin A, retinoic acid, retinol, retinol acetate, retinol palmitate, retinyl acetate, retinyl palmitate, tocopheryl retinoic acid, vitamin C and its derivatives, kinetin, tretinoin, vitamin E, α -Lipoic acid, coenzyme Q10, polyphenol, superoxide dismutase (SOD), phytic acid and the like.

  Specific examples are listed as coloring agents that can be used in the present invention, but the present invention is not limited to these compounds. For example, orange dye, cacao dye, kaolin, carmine, gunjo, cochineal dye, chromium oxide, iron oxide, titanium dioxide, tar dye, chlorophyll and the like can be mentioned.

  Specific examples are listed as thickeners that can be used in the present invention, but the present invention is not limited to these compounds. For example, quince seed, carrageenan, gum arabic, caraya gum, xanthan gum, gellan gum, tamarind gum, locust bean gum, tragacanth gum, pectin, starch, cyclodextrin, methylcellulose, ethylcellulose, carboxymethylcellulose, sodium alginate, polyvinyl alcohol, polyvinylpyrrolidone, carboxyvinyl Examples thereof include a polymer and sodium polyacrylate.

  Examples of the pH adjuster that can be used in the present invention include lactic acid, citric acid, glycolic acid, succinic acid, tartaric acid, malic acid, potassium carbonate, triethanolamine, monoethanolamine, and other organic acids or salts thereof, hydrochloric acid Inorganic acids such as perchloric acid, carbonic acid and phosphoric acid and salts thereof, sodium hydrogen carbonate, ammonium hydrogen carbonate, sodium hydroxide, potassium hydroxide and the like can be mentioned. It is not limited to these compounds, What is necessary is just to select and use a well-known pH adjuster suitably according to the objective.

  Examples of the hair dye include orange 205, black 401, purple 401, red 102, red 227, red 106, red 504, yellow 203, yellow 403 (1), green 204, Examples thereof include carbon black, black titanium oxide, henna, iron oxide, tar dye, chlorophyll, and pigment.

  Examples of fragrances include musk, acacia oil, anise oil, ylang ylang oil, cinnamon oil, jasmine oil, sweet orange oil, spearmint oil, geranium oil, thyme oil, neroli oil, mint oil, hinoki oil, fennel oil, Peppermint oil, bergamot oil, lime oil, lavender oil, lemon oil, lemongrass oil, rose oil, rosewood oil, anisaldehyde, geraniol, citral, civeton, muscone, limonene, vanillin and the like.

  Antibacterial agents include, for example, piroctone olamine, isopropyl methyl ether, hinokitiol, zinc pyrithione, climbazole, benzalkonium chloride, photosensitive dye 101, chlorhexidine, salicylic acid, phenol, ketoconazole and miconazole, sulfur, triclosan, trichlorocarbanilide. , Chlorhexidine hydrochloride, Chlorhexidine gluconate, Halocarban, Chlorophenesin, Benzethonium chloride, Benzalkonium chloride, Lysozyme chloride, Alkyldiaminoethylglycine hydrochloride, Isopropylmethylphenol, Benzoic acid, Photosensitizer 201, Thymol, Hexachlorophene , Berberine, Thioxolone, Yukinoshita extract, Oat extract, Ogon extract and their derivatives and salts.

  Examples of softeners include glycerin, mineral oil, benzyl alcohol, emollient components (eg, isopropyl isostearate, polyglyceryl isostearate, isotridecyl isononanoate, octyl isononanoate, oleic acid, glyceryl oleate, cocoa butter, cholesterol, mixed fatty acids Triglycerides, dioctyl succinate, sucrose acetate stearate, cyclopentasiloxane, sucrose distearate, octyl palmitate, octyl hydroxystearate, aralkyl behenate, sucrose polybehenate, polymethylsilsesquioxane, cetyl myristate, myristyl myristate Hexyl laurate, etc.).

  Examples of the humectant include agar, diglycerin, distearyldimonium hectorite, butylene glycol, polyethylene glycol, propylene glycol, hexylene glycol, yokinein extract, petrolatum, urea, hyaluronic acid, ceramide, lipid, isoflavone, amino acid, Collagen, mucopolysaccharide, fucodyne, lactoferrin, sorbitol, chitin / chitosan, malic acid, glucuronic acid, placenta extract, seaweed extract, bopipi extract, amacha extract, hypericum extract, coleus extract, masaki extract, kouca extract, maikai flower extract, cho Ray extract, hawthorn extract, rosemary extract, Duke extract, chamomile extract, nettle extract, litchi extract, yarrow extract, allo Extract, horse chestnut extract, Asunaroekizu, Fucus extract, Osmo-in extract, oat extract, tuberosa polysaccharide, Cordyceps extract, barley extract, orange extract, mention may be made of Rehmannia glutinosa, pepper extract, the Yokuininekisu like. In the case of casein nanoparticles, casein itself has moisture retention.

  Examples of the ultraviolet ray inhibitor include homomenthyl salicylate, 2-methoxyhexyl 4-methoxycinnamate, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxybenzophenone sulfonic acid, and 2-hydroxy-4-methoxybenzophenone. Examples thereof include sodium sulfonate, 4-t-butyl-4′-methoxy-dibenzoylmethane, titanium oxide, and zinc oxide.

  Examples of active oxygen scavengers include superoxide dismutase (SOD), mannitol, lutein and derivatives thereof, bilirubin, cholesterol, tryptophan, histidine, quercetin, quercitrin, catechin, catechin derivatives, gallic acid, gallic acid derivatives, and ogon extract. , Ginkgo biloba extract, Yukinoshita extract, Melissa extract, Gennoshoko extract, Boppi extract, Parsley extract, Tormentilla extract, Rakan fruit extract, seaweed extract, Yashajitsu extract, Zicopi extract and the like.

  Antioxidants include, for example, retinoic acid, retinol, vitamin C and derivatives thereof, vitamin E and derivatives thereof such as kinetin, tretinoin, tocopherol, sesamin, α-lipoic acid, coenzyme Q10, flavonoids, erythorbic acid, gallic acid Examples include propyl, BHT (di-n-butylhydroxytoluene), BHA (butylhydroxyanisole), koki extract, soybean extract, black tea extract, tea extract, age extract, and the like.

  Examples of the antimicrobial agent include triazine compounds, isothiazolone compounds, quaternary ammonium compounds, and the like.

  Examples of hair restorers include glycyrrhetinic acid or derivatives thereof, glycyrrhizic acid or derivatives thereof, hinokitiol, minoxidil or analogues thereof, adenosine, vitamin E or derivatives thereof, vitamin C derivatives, 6-benzylaminopurine, benzyl nicotinate, nicotine Acid tocopherol, nicotinic acid β-butoxy ester, isopropylmethylphenol, pentadecanoic acid or derivatives thereof, cephalatin, finasteride, t-flavanone, pantothenic acid, panthenol, licorice extract, quince extract, kudin extract, assembly extract, Pepper extract, toucha extract, carrot extract, spinach extract, button extract, mandarin extract and the like can be mentioned.

  As minerals, for example, calcium, magnesium, potassium, sodium, zinc, manganese, iron, copper, selenium and other essential metals for the maintenance and regulation of living organisms, the form of which is salt, oxide, protein complex Or a complex of its degradation product, a polysaccharide complex, or a complex of its degradation product, other modified starch complex, cyclodextrin complex, or minerals such as superoxide dismutase, glutathione peroxidase, and acid phosphatase Examples thereof include metal activating enzymes such as metal enzymes and phosphoglucomutase, enzymes containing metals other than the active center, and coenzymes.

  Examples of amino acids include glutamic acid, L-aspartic acid, L-alanine, L-cysteine, glycine, L-isoleucine, L-leucine, lysine, and the like, and salts thereof.

  The hair active ingredient mentioned above may be used independently and can also be used in combination of 2 or more type.

  The dosage form of the emulsified composition of the present invention is not particularly limited, and examples thereof include a rinse, a hair conditioner, a hair pack, a hair liquid, a hair tonic, a hair spray, a permanent wave composition, and a hair dye.

  A method for applying the emulsified composition of the present invention to the hair is not particularly limited, but may be a conditioner or the like that is applied to the hair and then rinsed off. Alternatively, it may be any of gel, mousse, cream, lotion, air-injected foam, etc. as a treatment agent that is not washed away.

The emulsion composition of this invention can be obtained by mix | blending each component mentioned above in accordance with a conventional method.
For example, (A) carotenoid, (B) higher alcohol, optional oily component, and (C) cationic surfactant, (D) cationic polymer, oil-soluble component is mixed by heating and stirring. A good solution. In addition, (C) a cationic surfactant and (D) a cationic polymer that is water-soluble, an optional component that is water-soluble, and water can be mixed with heating and stirring to obtain a uniform solution. However, it is not limited to this.
It can be obtained by combining two kinds of solutions prepared in advance, stirring and mixing under heating as necessary to obtain an emulsified composition containing an oil phase and an aqueous phase, and then cooling to an appropriate temperature. In addition, what is necessary is just to add to the water phase and the oil phase, respectively about the arbitrary component added as needed.

Hereinafter, the present invention will be described in detail with reference to examples. However, the present invention is not limited to the examples.
Examples 1 to 4, Example 6, Example 9, and Example 22 are reference examples of the present invention.

[Astaxanthin solution]
Astaxanthin solution used in the examples and comparisons was manufactured by Takeda Paperware Co., Ltd., ASTOTS-ST. In addition, content of astaxanthin in an astaxanthin liquid is 5.0 mass%.

[Preparation of emulsion composition of Comparative Example 1]
Each component described in Table 1 was combined so as to have the content (% by mass) described in Table 1, and an emulsion composition was produced as follows.
(A) Components 2 to 4 and 6 are heated to 80 ° C. and stirred and mixed for 30 minutes to dissolve each component.
(B) Components 1, 5, and 7 are heated to 80 ° C. and stirred and mixed for 30 minutes to dissolve each component.
(C) The solution prepared in (a) and component 8 are mixed immediately before, and then the solution prepared in (b) is added, and the mixture is stirred and mixed at 80 ° C. for 10 minutes.
(D) Components 9 to 16 are added and mixed with further stirring.

In addition, the detail of each component used in following Table 1 is as follows.
Stearyl trimonium chloride (Takemoto Yushi Co., Ltd., Pionine B-811-N)
Polyquaternium-10 (Merquat 10 manufactured by Nalco Japan Co., Ltd.)

[Examples 1 to 13, Comparative Examples 1 to 3]
An emulsified composition was prepared in the same manner as in Comparative Example 1 according to the formulations shown in Tables 2 to 3 below.

[Performance evaluation]
The obtained emulsion compositions of Examples 1 to 13 and Comparative Examples 1 to 3 were evaluated according to the following criteria. The results are shown in Tables 2 to 3 below.
(1. Hardness stability test over time)
Using the samples obtained in Examples and Comparative Examples, the hardness was measured one day after production at 23 ° C., and then the hardness after being stored at 23 ° C. for 2 months was measured. Measured and evaluated according to the following criteria.
The hardness here is that for a sample obtained in Examples and Comparative Examples by using a FUDOH rheometer manufactured by Rheotech Co., Ltd. and inserting a φ20 mm adapter at a depth of about 20 mm at a speed of 1 mm / sec. The peak when a force of 200 g was applied was measured as hardness.
It should be noted that when a change in hardness of +20 or more occurs compared to the initial stage of production (one day after production), it is obvious that the hardness has changed, A to C are levels that have no practical problem, and A to B are It is a level with excellent hardness stability.
(Evaluation criteria for hardness stability)
Hardness increase between +0 (no change in hardness) and less than +10: A
+10 or more and less than 15 hardness increase: B
+15 to less than 20 hardness increase: C
+20 or more hardness increase: D

(2. Confirmation of color change over time)
Using the samples obtained in Examples and Comparative Examples, the change in color after one day of production at 23 ° C. and after storage for 2 months at 23 ° C. was measured using a color difference meter (CR-400, manufactured by Konica Minolta Co., Ltd.). ) And confirmed by the change (ΔE) from the color in the initial stage of production (one day after production).
It should be noted that when a color change of ΔE = 2.5 or more occurs, it is a level at which it can be seen that the color has clearly changed visually.
(Evaluation criteria for color change)
Less than ΔE 2: A
ΔE 2 or more and less than 2.5: B
ΔE 2.5 or more: C

In Comparative Examples 1 to 3 composed of only one kind of higher alcohol, improvement in hardness stability and color stability was not observed, and there were practically problematic levels.
On the other hand, the examples in which the higher alcohol was composed of two or more types had better hardness stability and tint stability than the comparative examples.
Among them, Examples 7 to 11 containing stearyl alcohol (carbon number 18) and having a content of behenyl alcohol (carbon number 22) of 50% by mass or less based on the total amount of (B) higher alcohol have particularly good hardness stability. Was.

  Examples 5 to 13 in which higher alcohols are composed of two or more types, particularly Examples 5 to 13 in which behenyl alcohol is 50% or less, were able to suppress color change more reliably.

[Examples 14 to 21, Comparative Example 4]
Next, in addition to the effects of the present invention, the feel during use was evaluated. That is, the emulsion compositions of Examples 14 to 21 were prepared in the same manner as Comparative Example 1 except that (B) the content of higher alcohol and (D) the type of cationic polymer used were changed. It is a thing.
The obtained emulsified composition is evaluated for changes in hardness and tint in the same manner as in Example 1. Further, the following criteria are used to evaluate the feeling of fluffy hair, the feeling of firmness, etc. It was. The results are also shown in Table 4.

(3. Sensory evaluation)
5 g of the emulsified composition of Comparative Example 4 and Examples 14 to 21 was applied to a hair bundle of human hair having a length of 20 cm, a width of 1 cm, and a weight of 1.5 g. Rinse with warm water for 1 minute and dry well.

Using the untreated hair bundle as a reference hair, the tension of the hair bundle was subjected to sensory evaluation in five stages according to the following criteria. Evaluation was performed by five people, and the average value of the evaluation is shown in Table 4. A score greater than 0 indicates that the properties are improved over the reference hair.
(Evaluation criteria for harikoshi)
+2: There is a harshness +1: There is a little harshness 0: I can not say either -1: There is not much harshness -2: There is no harshness

In addition, the detail of (D) cationic polymer used in the following table | surface is as follows.
Polyquaternium-6 (Merquat 106, manufactured by Nalco Japan Co., Ltd.)
・ Polyquaternium-7 (manufactured by Nalco Japan, Merquat 2200)
・ Polyquaternium-11 (manufactured by ISP Japan Co., Ltd., Guffcut 440)
・ Polyquaternium-22 (manufactured by Nalco Japan KK, Merquat 280)
Polyquaternium-39 (Merquat 3330, manufactured by Nalco Japan)
-Polyquaternium-42 (Merquat 2001, manufactured by Nalco Japan)
・ Polyquaternium-52 (manufactured by Kao Corporation, Sofcare KG-301W)

  All of the emulsified compositions of the present invention were excellent in hardness stability and color stability compared to Comparative Example 4 that did not contain a cationic polymer. Furthermore, in Comparative Example 4, while the elasticity of the hair is inferior and at a practically problematic level, improvement in the elasticity of the hair is seen in all of the emulsified compositions of Examples 14-21, Due to the strong film properties resulting from the emulsified composition, significant improvement in elasticity was observed in Examples 14 and 17-21.

[Example 22]
A hair conditioner was prepared according to the following formulation using the emulsified composition of the present invention. The following numerical value means the mass% with respect to the total mass of prescription.
<Composition> (mass%)
・ Ethylhexyl palmitate 11.0
・ Stearyl alcohol 2.0
・ Behenyl alcohol 4.0
・ Stear trimonium bromide 0.01
1,3-butylene glycol 2.0
・ Glycerin 2.0
・ Sodium hyaluronate 0.1
・ Tocopherol 0.1
・ Ceramide 2 0.1
・ Cholesterol 0.1
・ Glycyrrhetinic acid 0.01
・ Water-soluble collagen 0.1
・ Astaxanthin solution 0.01
Acetyl hydroxyproline 0.1
・ Assembly extract 0.001
・ Ginseng root extract 0.001
・ Dipotassium glycyrrhizinate 0.01
Polyquaternium-10 1.0
・ Dipentaerythrityl 2.0
・ Zicoconium chloride 1.0
・ Isopropanol 1.0
・ Lauroylsarcoline isopropyl 0.1
・ Oleyl alcohol 0.1
Decyltetradecanol 0.1
・ Lauroyl glutamate di (phytosteryl / octyldodecyl) 0.1
Polyglyceryl isostearate-10 0.1
・ Lecithin 0.1
Tri (caprylic acid / capric acid) glyceryl 0.1
・ Polyglyceryl myristate 0.1
Alkyl (C12,14) oxyhydroxypropyl arginine hydrochloride 0.1
・ Damask rose flower oil appropriate amount ・ Citric acid 0.1
・ Perfume appropriate amount ・ Phenoxyethanol 0.2
・ Butylcarbamic acid propynyl iodide 0.2
・ Remaining water

  The hair conditioner prepared in Example 22 was excellent in hardness stability and color stability, and further showed a great improvement in hair sharpness.

Claims (6)

(A) carotenoid, (B) two or more higher alcohols having different carbon chain lengths selected from the group consisting of higher alcohols having 16 to 22 carbon atoms, (C) a cationic surfactant, and (D) comprising a cationic polymer;
(A) the carotenoid is astaxanthin, and
An emulsified composition that satisfies the following conditions (1) to (3).
(1) The content of the higher alcohol having 22 carbon atoms with respect to the total content of the higher alcohol contained in the emulsion composition is 40% by mass or less.
(2) The content of the higher alcohol having 18 carbon atoms with respect to the total content of the higher alcohol contained in the emulsion composition is 10% by mass or more and 70% by mass or less.
(3) The content of the higher alcohol having 16 carbon atoms with respect to the total content of the higher alcohol contained in the emulsion composition is 90% by mass or less .   (B) The emulsification according to claim 1, wherein the two or more higher alcohols having different carbon chain lengths selected from the group consisting of higher alcohols having 16 to 22 carbon atoms include higher alcohols having 18 carbon atoms. Composition. (B) The total content of two or more higher alcohols selected from the group consisting of higher alcohols having 16 to 22 carbon atoms and having different carbon chain lengths is 0.1% by mass relative to the emulsion composition. To 15% by mass and (B) selected from the group consisting of higher alcohols having 16 to 22 carbon atoms, the total content of two or more higher alcohols having different carbon chain lengths, The emulsified composition according to claim 1 or 2, wherein the content of the higher alcohol of Formula 22 is 40 % by mass or less.   (C) Content of a cationic surfactant is 0.3 mass%-5.0 mass% with respect to the emulsion composition whole quantity, The emulsification of any one of Claims 1-3. Composition.   (D) Content of a cationic polymer is 0.01 mass%-3.0 mass% with respect to an emulsion composition whole quantity, The emulsion composition of any one of Claims 1-4. .   It is an object for hair, The emulsion composition of any one of Claims 1-5.