JP2013107862A - Skin cosmetic gel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a skin cosmetic gel that has a high viscosity but causes no unpleasant feelings in use such as stickiness, slimy feel, creakiness and cosmetic kinkiness.SOLUTION: The skin cosmetic gel comprises water-soluble polysaccharides and an acrylic polymer compound, wherein the acrylic polymer compound comprises at least one selected from the group consisting of a (hydroxyethyl acrylate/acryloyldimethyltaurine Na) copolymer, a (Na acrylate/acryloyldimethyltaurine Na) copolymer, an (acrylamide/ammonium acrylate) copolymer, polyacrylate-13 and ammonium polyacrylate.

Description

  The present invention relates to a gel-like skin cosmetic that has a high viscosity but does not have an unpleasant feeling of use.

  In recent years, many all-in-one cosmetics in which functions such as lotion, cosmetic liquid, milky lotion, and cream are condensed into one gel-like cream have been put on the market from the viewpoint of simplicity of the makeup step. These gel-like cosmetics use water-soluble polymer compounds, etc., and they are considered to have a high viscosity and leave a fresh feeling that is unique to lotions, delay the transpiration rate of water, and improve the duration of the moisturizing effect. It is done. However, these gel-like cosmetics have a relatively high amount of so-called polymer thickeners such as water-soluble polymer compounds, resulting in a high viscosity. There were drawbacks such as the cosmetics becoming swayed, and having a feeling of stickiness and squeak.

  On the other hand, as skin cosmetics using acrylic polymer compounds, emulsion cosmetics using specific acrylic polymers (Patent Document 1), skin cosmetics using amphoteric and acidic acrylic polymers (patents) Document 2) is shown. However, the present situation is that the above-mentioned drawbacks are not fundamentally solved in terms of use feeling.

JP 2008-291014 A Japanese Patent Laid-Open No. 2006-22026

  Accordingly, an object of the present invention is to provide a gel-like skin cosmetic that does not have an unpleasant feeling of use such as stickiness, sliminess, squeaky feeling, and kinking of the cosmetic on the skin, while having a high viscosity during use. It is in.

  In the above situation, as a result of intensive studies, the present inventors have found that when a water-soluble polysaccharide and a specific acrylic polymer compound are used in combination, the stickiness, the feeling of stickiness, the squeakiness, and the cosmetics on the skin. The present inventors have unexpectedly found that a gel-like skin cosmetic that does not have an unpleasant feeling of use such as warping can be obtained, and has completed the present invention.

  That is, in order to achieve the above object, the gel-like skin cosmetic according to the present invention is a gel-like skin cosmetic containing a water-soluble polysaccharide and an acrylic polymer compound, wherein the acrylic polymer The compound is a group consisting of (hydroxyethyl acrylate / acryloyl dimethyl taurine Na) copolymer, (Na acrylate / acryloyl dimethyl taurine Na) copolymer, (acrylamide / ammonium acrylate) copolymer, polyacrylate-13, and ammonium polyacrylate. It is supposed to contain at least one selected from

  In one form of the gel-like skin cosmetic according to the present invention, the water-soluble polysaccharide contains at least glucuronic acid as a constituent monosaccharide.

  In one form of the gel-like skin cosmetic according to the present invention, the water-soluble polysaccharide is at least one selected from the group consisting of hyaluronic acid and its salt, chondroitin sulfate and its salt, white jellyfish polysaccharide, and xanthan gum. More than a seed.

  In one form, the gel-like skin cosmetic according to the present invention contains 0.001 to 0.3% by mass of the water-soluble polysaccharide and 0.1 to 5.0% by mass of the acrylic polymer compound. .

  The gel-like skin cosmetic of the present invention has high viscosity, has no stickiness, slimy feeling, and squeaky feeling, and has excellent characteristics in use feeling without the skin being squeezed.

  Hereinafter, embodiments of the present invention will be described in detail. The present invention is not limited to the following embodiments.

  The gel-like skin cosmetic according to the present invention contains a water-soluble polysaccharide and a specific acrylic polymer compound.

(1) Water-soluble polysaccharides The water-soluble polysaccharides used in the present invention are those extracted and purified from animal and plant tissues and water-soluble polysaccharides obtained by microbial fermentation, and are commonly used in the fields of cosmetics, pharmaceuticals, and foods. Can be used. In particular, the water-soluble polysaccharide preferably contains at least glucuronic acid as a constituent monosaccharide. The constituent ratio (molar fraction) of glucuronic acid in the water-soluble polysaccharide is, for example, 1 to 70% on average, preferably 10 to 60% on average, and more preferably 15 to 55% on average. Examples of other constituent monosaccharides of the water-soluble polysaccharide include, but are not limited to, N-acetylglucosamine, N-acetylgalactosamine, galactose, mannose, xylose, arabinose, and fucose. The weight average molecular weight of the water-soluble polysaccharide is preferably 40,000 to 8 million. Examples of the water-soluble polysaccharide include hyaluronic acid and its salt, chondroitin sulfate and its salt, white jellyfish polysaccharide, xanthan gum and the like. Hyaluronate and chondroitin sulfate are preferably sodium salts, for example. The white jellyfish polysaccharide can be obtained by extraction and purification from the dried fruiting body of the white jellyfish (Tremella fuciformis Berk). Specifically, commercially available products such as Tremoist-TP (manufactured by Nippon Seika Co., Ltd.) can be used. 0.001-0.3 mass% is preferable and the compounding quantity of the water-soluble polysaccharide in gel skin cosmetics has more preferable 0.01-0.1 mass%. By setting the blending amount of the water-soluble polysaccharide in the gel-like skin cosmetic to 0.001 to 0.3% by mass, an excellent feeling of use can be imparted, and stickiness, sliminess, and squeaky feeling can be suppressed.

(2) Acrylic polymer compound The acrylic polymer compound used in the present invention includes (hydroxyethyl acrylate / acryloyl dimethyl taurine Na) copolymer, (Na acrylate / acryloyl dimethyl taurine Na) copolymer, (acrylamide / ammonium acrylate). ) Selected from the group consisting of copolymers, polyacrylate-13, and ammonium polyacrylate. Particularly preferred is a (hydroxyethyl acrylate / acryloyldimethyltaurine Na) copolymer. Any acrylic polymer compound may be a commercially available product.
As the (hydroxyethyl acrylate / acryloyldimethyltaurine Na) copolymer, for example, SEPINOV EMT 10 manufactured by SEPPIC or SIMULGEL NS manufactured by SEPPIC can be used.
As the (acrylic acid Na / acryloyldimethyltaurine Na) copolymer, for example, SIMULGEL EG manufactured by SEPPIC can be used.
As the (acrylamide / ammonium acrylate) copolymer, SEPPIC 265 manufactured by SEPPIC can be used.
As polyacrylate-13, SEPPLUS 400 manufactured by SEPPIC, or the like can be used.
As the polyacrylic acid ammonium, SIMULGEL A manufactured by SEPPIC can be used.
0.1-5.0 mass% is preferable and, as for the compounding quantity of the acryl-type high molecular compound in gel skin cosmetics, 0.3-3.0 mass% is more preferable. By making the blend amount of the acrylic polymer compound in the gel-like skin cosmetic to be 0.1 to 5.0% by mass, the thixotropic property is excellent, and when it is picked up, the gel has a viscosity when applied. It can be reduced, and a fresh feeling that is unique to lotion can be obtained.

(3) Other components It is preferable that the gel-like skin cosmetic according to the present invention further contains an oil component and an emulsifier as other compounding components. By containing an oil component and an emulsifier, a higher moisturizing effect can be obtained.

  There is no restriction | limiting in particular in an oil component, What is generally used for cosmetics can be used. Examples of the oil component include hydrocarbons such as liquid paraffin and squalane; natural animal and vegetable oils and fats such as olive oil, jojoba oil, avocado oil, soybean oil, meadowweed oil, and lanolin; cetyl 2-ethylhexanoate, isononyl isononanoate, Fatty acid esters such as isotridecyl isononanoate, isopropyl myristate, isopropyl palmitate, 2-ethylhexyl palmitate, 2-ethylhexyl stearate, stearyl stearate; tri (capryl / caprylic acid) glyceryl, glyceryl tri-2-ethylhexanoate, etc. Triglycerides and polyhydric alcohol fatty acid ester oils; higher alcohols such as cetyl alcohol, stearyl alcohol, isostearyl alcohol, behenyl alcohol; lauric acid, myristic acid, palmitic Higher fatty acids such as acid, stearic acid and isostearic acid; chain silicone oil such as dimethylpolysiloxane and methylphenylpolysiloxane; cyclic silicone oil such as decamethylcyclopentanesiloxane; liquid or solid silicone such as silicone gel and silicone powder Oil etc. are mentioned. These oil components can be used alone or in combination of two or more. The blending amount of the oil component in the gel skin cosmetic is preferably 0.1 to 30.0% by mass.

  Examples of the emulsifier include anionic surfactants, cationic surfactants, amphoteric surfactants, nonionic surfactants, and silicone surfactants as emulsifiers for silicone oil, preferably nonionic Surfactants and silicone surfactants, one or more of which can be used. The blending amount of the emulsifier in the gel skin cosmetic is preferably 0.1 to 10.0% by mass.

Nonionic surfactants include polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil and derivatives thereof; sorbitan monopalmitate, sorbitan monostearate, sorbitan monooleate, sorbitan palm oil fatty acid, sorbitan tristearate Sorbitan fatty acid esters such as sorbitan trioleate; polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monopalmitate, polyoxyethylene sorbitan monooleate, polyoxyethylene sorbitan tristearate, polyoxyethylene sorbitan trioleate, etc. Polyoxyethylene sorbitan fatty acid ester; polyoxyethylene sorbite monolaurate, polyoxyethylene sorbite tetrastearate Glycerol fatty acid esters such as glyceryl monostearate, glyceryl monostearate, glyceryl monoisostearate; polyoxyethylene glyceryl monostearate, polyoxyethylene glyceryl monoisostearate, polyoxyethylene glyceryl tristearate, tri Polyoxyethylene glyceryl fatty acid esters such as polyoxyethylene glyceryl isostearate and polyoxyethylene glyceryl trioleate; polyoxyethylene lauryl ether, polyoxyethylene cetyl ether, polyoxyethylene stearyl ether, polyoxyethylene oleyl ether, polyoxyethylene Polyoxyethylene alkyl ethers such as octyldodecyl ether; polyethylene monolaurate Polyglycol fatty acid esters such as polyglycolyl monolaurate, polyglyceryl monolaurate, polyglyceryl monomyristate, polyglyceryl monostearate, polyglyceryl monooleate, polyglyceryl tristearate, polyglyceryl tristearate, etc. Can be mentioned.
Examples of the silicone-based surfactant include polyether-modified silicone and polyglycerin-modified silicone.

  Gel skin cosmetics according to the present invention include polyhydric alcohols, moisturizers, sugars, preservatives, antibacterial agents, sequestering agents, polymer thickeners such as water-soluble polymers, neutralizing agents, pH A regulator, a powder component, a UV absorber, a UV blocker, and the like can be further contained. Moreover, vitamins, skin activators, blood circulation promoters, anti-inflammatory agents, other cosmetic ingredients such as whitening agents, medicinal ingredients, physiologically active ingredients, fragrances, and pigments can be further included. As these components, those commonly used in cosmetics can be used, and the amount of the components can be appropriately determined by those skilled in the art as long as it does not adversely affect the usability of the gel skin cosmetics. it can.

  Examples of the polyhydric alcohol include glycerin, 1,3-butylene glycol, 1,2-pentanediol, polyethylene glycol, dipropylene glycol, propylene glycol, isoprene glycol, diglycerin and the like.

  Examples of the humectant include xylitol, maltitol, maltose, sorbitol, glucose, fructose, hydrolyzed elastin, sodium lactate, cyclodextrin, pyrrolidone carboxylic acid and salts thereof, and ceramides.

  Examples of antiseptics and antibacterial agents include benzoic acid, salicylic acid, coalic acid, sorbic acid, p-oxybenzoic acid ester, parachloromethcresol, hexachlorophene, benzalkonium chloride, chlorhexidine chloride, trichlorocarbanilide, photosensitizer, phenoxyethanol Etc.

  Examples of the sequestering agent include edetate salts such as disodium ethylenediaminetetraacetate, edetic acid, and sodium edetate.

  Examples of thickeners such as water-soluble polymers include gum arabic, gum tragacanth, galactan, guar gum, carrageenan, pectin, agar, quince seed, dextran, dextrin, pullulan, carboxymethyl starch, collagen, casein, gelatin, methylcellulose, Examples thereof include methylhydroxypropylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, sodium carboxymethylcellulose, sodium alginate, sodium carboxymethyldextran, bentonite and the like.

  Examples of the neutralizing agent include potassium hydroxide, sodium hydroxide, triethanolamine, sodium carbonate and the like. Examples of the pH adjuster include lactic acid, citric acid, glycolic acid, succinic acid, tartaric acid, dl-malic acid, potassium carbonate, sodium hydrogen carbonate, ammonium hydrogen carbonate and the like.

  Examples of the powder component include talc, mica, kaolin, silica, sericite, zeolite, polyethylene powder, polystyrene powder, cellulose powder, nylon powder, boron nitride, barium sulfate, hydroxyapatite, inorganic white pigment, inorganic red pigment, Mention may be made of pearl pigments such as inorganic yellow pigments, black iron oxide, titanium oxide coated mica, titanium oxide coated talc, and colored titanium oxide coated mica, and organic pigments such as red 201 and red 202.

  Examples of the ultraviolet absorber include paraaminobenzoic acid, phenyl salicylate, isopropyl paramethoxycinnamate, octyl paramethoxycinnamate, 2,4-dihydroxybenzophenone, and the like.

  Examples of the ultraviolet blocking agent include fine particle titanium oxide and fine particle zinc oxide.

The medicinal ingredient, for example, vitamin A oil, vitamin A such as retinol, vitamin B ₂ such as riboflavin, B ₆ such as pyridoxine hydrochloride, L- ascorbic acid, magnesium L- ascorbyl phosphate, L- Vitamin Cs such as ascorbic acid monopalmitate, L-ascorbic acid dipalmitate, L-ascorbic acid-2-glucoside, pantothenic acids such as calcium pantothenate, vitamin Ds such as vitamin D ₂ and cholecalciferol And vitamins such as vitamin E such as α-tocopherol, tocopherol acetate and DL-α-tocopherol nicotinate. Whitening agents such as arbutin, placenta extract, glutathione, and yukinoshita extract, skin activators such as royal jelly, linden extract, blood circulation promoters such as capsaicin, gingeron, cantalis tincture, ictamol, caffeine, tannic acid, γ-oryzanol, Examples include glycyrrhizic acid derivatives, glycyrrhetinic acid derivatives, flame retardants such as azulene and allitein, and amino acids such as arginine, serine, leucine and tryptophan. In addition, chamomile flower extract, buckwheat extract, button extract, parsley extract, beech tree extract, wine yeast extract, grapefruit extract, honeysuckle extract, rice extract, grape extract, hop extract, rice bran extract, loquat extract, buckwheat extract, yokuinin extract, assembly extract, merirot Extract, birch extract, licorice extract, peonies extract, bonito extract, loofah extract, capsicum extract, lemon extract, gentian extract, perilla extract, aloe extract, rosemary extract, sage extract, caihi extract, thyme extract, tea extract, seaweed extract , Cucumber extract, Clove extract, Carrot extract, Maronnier extract, Clam extract, Mulberry extract, Ogon extract, Hypericum extract, Seyo Mention may be made of hawthorn extract, various extracts such as Centella asiatica extract.

  The gel skin cosmetic according to the present invention contains water as the remaining component. The amount of water in the gel skin cosmetic is preferably 40 to 99.9% by mass, more preferably 50 to 90% by mass.

  The gel-like skin cosmetic according to the present invention preferably contains 0.001 to 0.3% by mass of a water-soluble polysaccharide and 0.1 to 5.0% by mass of an acrylic polymer compound. These components are further contained, and the balance is water.

  The gel-like skin cosmetic according to the present invention preferably has a pH of 4.0 to 7.0. It is preferable from the viewpoint of stability that the pH is kept at a weak acidity of 4.0 to 7.0.

  The gel-like skin cosmetic according to the present invention is a gel cosmetic with very low fluidity and soft properties, and preferably has a viscosity at 25 ° C. of 10,000 to 300,000 mPa · s, more preferably 20 , 000 to 200,000 mPa · s. The gel skin cosmetic is a composition excellent in thixotropy.

  The preferred use of the gel-like skin cosmetic according to the present invention is a cosmetic applied to the skin, for example, cream, serum, pack, hand cream, makeup cleansing, foundation, makeup base, cheek red, Cosmetics such as eyeshadow, eyeliner, eyebrow and lipstick. A more suitable application is cosmetics having functions such as lotion, cosmetic liquid, milky lotion, cream, etc., so-called all-in-one cosmetics.

[Preparation method]
The gel skin cosmetic according to the present invention is prepared by mixing an aqueous phase containing a water-soluble polysaccharide with an acrylic polymer compound which is optionally mixed and stirred with an oil phase, and stirring the mixture. be able to. The oil phase preferably contains an oil component and an emulsifier, and may further contain other lipophilic components such as a lipophilic ultraviolet absorber, a lipophilic medicinal component, and a hydrophobized powder component. . The aqueous phase can be prepared by including a water-soluble polysaccharide and water. For aqueous phase, polyhydric alcohol, moisturizer, sugar, preservative, antibacterial agent, sequestering agent, polymer thickener, neutralizer, powder component, UV absorber, UV blocker, vitamins, etc. These other hydrophilic components may be further contained. The blending amounts of these components are set so that the final concentration in the gel skin cosmetic is within the above-described preferable range. The temperature of the mixture of the acrylic polymer compound, the oil phase, and the aqueous phase is preferably 60 to 80 ° C. Moreover, it is preferable to add a pH adjuster to the mixture as appropriate to adjust the pH to 4.0 to 7.0. Stirring is performed until the mixture is in the form of a gel, preferably a viscosity at 25 degrees of 10,000 to 300,000 mPa · s. For the stirring, general equipment such as a paddle mixer, a homomixer, and a disper mixer can be used. After stirring, it is preferable to remove bubbles in the gel-like skin cosmetic cooled to room temperature using a defoaming device, or to manufacture under reduced pressure.

  EXAMPLES Next, although an Example is given and this invention is demonstrated further more concretely, this invention is not limited to these Examples.

[Preparation of gel skin cosmetics]
Gel-like skin cosmetics having the compositions shown in Table 1 were prepared by the following method.
Using an emulsion emulsifying and stirring apparatus PVQ-5UN (manufactured by Mizuho Kogyo), the oil phases (1) to (3), (12), and (13) were heated and dissolved at about 60 ° C., and then various acrylic polymer compounds. (6) to (11) were added, and the mixture was stirred with a paddle mixer at 30 rpm for 10 minutes. Next, water phases (4), (5), and (14) to (20) containing a water-soluble polysaccharide heated to about 60 ° C. are added, and sufficiently stirred for 60 minutes at 50 rpm in a paddle mixer under reduced pressure. Then, it was cooled to room temperature to obtain a gel skin cosmetic. In Comparative Example 1, the oil phase and the aqueous phase were separated, and a gel-like composition was not obtained. The viscosity of the gel skin cosmetics of Examples 1 to 6 and Comparative Examples 2 and 3 at 25 ° C. was measured with a TV No. It was determined by measuring for 1 minute at 4, 12 rpm (Table 1).

[Real use test]
An actual use test was conducted by 10 professional panels, and the gel skin cosmetics of Examples 1 to 6 and Comparative Examples 2 and 3 were "sticky", "squeezed", "smooth" The “presence / absence of kinking on the skin” was evaluated by the following method. The results are shown in Table 2.
(1) Actual use test regarding the presence or absence of stickiness Each gel skin cosmetic falls under any of the evaluation categories of “very little sticky”, “little stickiness”, “slightly sticky”, or “sticky”. It was judged. Based on the number of specialist panels judged to be “very sticky” or “little sticky”, “no stickiness” was evaluated as follows.
(Evaluation criteria)
◎ ・ ・ 9 or more people who evaluated “very little stickiness” or “little stickiness” ○ ・ ・ 6 to 8 people who rated “very little stickiness” or “little stickiness” Name △ ・ ・ 3-5 people who evaluated “very little stickiness” or “little stickiness” × ・ ・ 2 people who rated “very little stickiness” or “little stickiness” (2) Actual use test regarding presence or absence of squeakiness Judge whether each gel-like skin cosmetic falls into the evaluation category of “Kishimanai”, “I feel squeaky”, or “Kishimu” did. Based on the number of specialized panels that were judged as “Kishimanai”, “no squeak” was evaluated as follows.
(Evaluation criteria)
○ ・ ・ 9 or more people who evaluated “Kimashimai” △ ・ ・ 2-8 people who evaluated “Kimashimai” × ・ ・ 1 or less people who evaluated “Kimashimai” ( 3) Actual use test for the presence or absence of a slimy feeling Each gel-like skin cosmetic was judged to fall into one of the evaluation categories of "not sticky", "feels sticky" or "smooth". Based on the number of professional panels judged as “non-sticky”, “no-smoothness” was evaluated as follows.
(Evaluation criteria)
○ ・ ・ 9 or more people who evaluated “Non-smooth” △ ・ ・ 2-8 people who evaluated “Non-smooth” × ・ ・ One or less people who evaluated “Non-smooth” ( 4) Actual use test regarding the presence or absence of kinks on the skin Each gel skin cosmetic was judged to fall under any of the evaluation categories of "No kinks", "I feel kinks", or "I have kinks". . Based on the number of specialized panels judged as “no good”, “no good” was evaluated as follows.
(Evaluation criteria)
○ ・ ・ 9 or more people who evaluated “no luck” △ ・ ・ 2 to 8 people who evaluated “no luck” × ・ ・ 1 or less people who evaluated “no luck”

  Referring to the results in Table 2, all the gel skin cosmetics of Examples 1 to 6 were “sticky”, “squeaked”, “smooth”, “skin on skin” Excellent use feeling was exhibited in all items of “Presence of presence”. In particular, almost all the gel-like skin cosmetics of Examples 1 and 6 were judged to be “very sticky” or “little sticky”, and the feeling of use related to stickiness was very good. In cosmetic products with high viscosity, a large amount of water-soluble polymer compound forms a polymer film on the skin. Therefore, depending on the nature of the water-soluble polymer compound, unpleasant use and finish such as stickiness and squeaking It is easy to cause makeup due to incompatibility with cosmetics, and it is generally not easy to improve such an unpleasant feeling of use. In view of such circumstances, the present inventors have achieved excellent use characteristics despite the fact that all the gel skin cosmetics of Examples 1 to 6 have a high viscosity of 30,000 mPa · s or more. It was an unexpected result. On the other hand, the gel-like skin cosmetics of Comparative Examples 2 and 3 were not evaluated well in any of the evaluation categories. In particular, Comparative Example 2 had a poor squeakiness, and Comparative Example 3 had a poor slickness.

Claims (4)

  A gel skin cosmetic comprising a water-soluble polysaccharide and an acrylic polymer, wherein the acrylic polymer is a (hydroxyethyl acrylate / acryloyldimethyltaurine Na) copolymer, (Na / acrylate) A gel-like skin cosmetic containing at least one selected from the group consisting of (acryloyldimethyltaurine Na) copolymer, (acrylamide / ammonium acrylate) copolymer, polyacrylate-13, and ammonium polyacrylate.   The gel-like skin cosmetic according to claim 1, wherein the water-soluble polysaccharide contains at least glucuronic acid as a constituent monosaccharide.   The gel-like skin makeup according to claim 1 or 2, wherein the water-soluble polysaccharide is at least one selected from the group consisting of hyaluronic acid and a salt thereof, chondroitin sulfate and a salt thereof, a white jellyfish polysaccharide, and xanthan gum. Fee. The gel-like skin cosmetic according to any one of claims 1 to 3, comprising 0.001 to 0.3% by mass of the water-soluble polysaccharide and 0.1 to 5.0% by mass of the acrylic polymer compound. .