JP2008115094A - Cosmetic for cleansing use - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cosmetic for cleansing use having excellent foamability without using triethanolamine or an N-acylamino acid salt. <P>SOLUTION: The cosmetic contains 5-20 mass% of a fatty acid soap and 0.1-10 mass% of a compound of general formula (1) (wherein, R is an alkyl or alkenyl group optionally having a 8-20C branched or cyclic structure; and n is an integer of 1-30) and/or a salt thereof. In this cosmetic, the fatty acid soap consists preferably of a mixture of a fatty acid potassium salt soap and a fatty acid sodium salt soap, wherein it is preferable that the constituent fatty acid include isostearic acid and a 12-hydroxyfatty acid, and the compound of general formula (1) is polyoxyethylene tridecyl ether acetic acid. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cosmetic, and more particularly to a cosmetic suitable for a cosmetic for cleaning.

  In the cleaning material, the foam is an important factor responsible for the cleaning, and the characteristic of removing the dirt varies greatly depending on the characteristics of the foam interface of the foam. That is, it is a foam interface that has excellent foam retention, and if it has excellent lipid solubilization properties, it exhibits excellent lipid removal power in combination with the surface area of the interface, and in addition, a surfactant after washing Since the residual amount of the water is remarkably reduced, it is possible to suppress the expression of the irritation after washing, which is said to be caused by the residual skin surfactant. In this sense, it is very significant to design a cleaning material that generates a foam having high surface activity and high foam maintenance.

  In such a cleaning agent, as a surfactant for forming foam and exhibiting detergency, fatty acid soap is excellent under conditions using warm water, but as an alkaline agent constituting fatty acid soap, When sodium ions are used, a gel structure is formed at a low temperature range, causing a significant increase in hardness and impairing usability. When potassium ions are used, crystals grow at a high temperature range. In some cases, the solubility during use was impaired. From such a point of view, in order to prevent such a loss of usability, triethanolamine may be used in combination as an alkaline agent, or an N-acyl amino acid salt such as N-lauroyl glutamate may be used as an auxiliary surfactant. Has been done. (For example, refer to Patent Document 1, Patent Document 2, Patent Document 3, and Patent Document 4) Mixing such components certainly improves the foam formation, but on the other hand, in the state of a thin aqueous solution. When used, there were cases where coloring was performed under high temperature storage conditions, and there were cases where treatment such as blending of a stabilizer had to be performed. In addition, in terms of detergency, components with high fat solubility are not sufficiently washed and removed, and nonionic surfactants such as polyoxyethylene / polyoxypropylene block copolymers and polyoxyethylene fatty acid glyceryl are used as auxiliary detergency components. There was also a problem that the total content of the surfactant increased.

  On the other hand, polyoxyethylene alkyl ether acetic acid and / or a salt thereof represented by the following general formula (1) is known as a cleaning component in the cosmetics field (for example, Patent Document 5, Patent Document 6, Patent Document). 7), however, it has not been known at all that when such an ingredient is used together with a fatty acid soap, its foam-forming property is remarkably improved and an excellent cleaning action for fat-soluble ingredients is imparted. In the cosmetic for washing | cleaning which uses -20 mass% fatty acid soap as a washing | cleaning component, 0.1-10 mass% of compounds and / or its salt represented by General formula (1) shown below are contained. Also, no cosmetics for cleaning were known.

JP 2002-20267 A JP-A-11-323379 JP-A-11-323378 JP-A-10-237494 JP-A-6-293629 JP 2005-145903 A JP-A-7-48222

  The present invention has been made under such circumstances, and an object of the present invention is to provide a washing cosmetic having excellent foaming properties without using triethanolamine or an N-acylamino acid salt.

In view of such a situation, the present inventors have sought for a cosmetic for washing having excellent foaming properties without using triethanolamine or an N-acylamino acid salt, and have made extensive research efforts. In a low concentration fatty acid soap aqueous solution, by using a compound represented by the following general formula (1) and / or a salt thereof in combination, an excellent foam quality and detergency foam can be formed in the form of a pump former. It has been found and the invention has been completed. That is, the present invention is as follows.
(1) 1) In a cosmetic for washing which contains 5 to 20% by mass of fatty acid soap as a washing component, 0.1% of the compound represented by the following general formula (1) and / or a salt thereof is used. The cosmetic for washing | cleaning characterized by containing 10 mass%.

一般式（１）
（但し、式中Ｒは炭素数８〜２０の分岐構造乃至は環状構造を有していても良いアルキル基乃至はアルケニル基を表し、ｎは１〜３０の整数を表す。）

General formula (1)
(In the formula, R represents an alkyl group or an alkenyl group which may have a branched or cyclic structure having 8 to 20 carbon atoms, and n represents an integer of 1 to 30.)

(2) The cosmetic for washing according to (1), wherein the fatty acid soap is a mixture of a fatty acid potassium soap and a fatty acid sodium soap.
(3) The cosmetic for washing according to (1) or (2), wherein the fatty acid constituting the fatty acid soap contains isostearic acid and 12-hydroxy fatty acid.
(4) The cleaning cosmetic according to any one of (1) to (3), wherein the compound represented by the general formula (1) is polyoxyethylene tridecyl ether acetic acid. .
(5) The cleaning material according to any one of (1) to (4), wherein the cleaning material is in the form of a pump former.

  ADVANTAGE OF THE INVENTION According to this invention, the cosmetics for washing | cleaning which have the outstanding foaming property can be provided, without using a triethanolamine or N-acylamino acid salt.

(1) Fatty acid soap which is an essential component of the cosmetic of the present invention The cosmetic of the present invention is a cosmetic for cleaning, and as a cleaning component, in other words, 5 to 20 mass of fatty acid soap as a foam-forming component. %, More preferably 7 to 15% by mass. By setting the amount in this range, it is possible to maintain excellent foam-forming properties and cleanability due to the soil conjugation ability due to the combination effect with the essential components described later, and to have excellent foaming properties even in a low temperature range. As the fatty acid constituting such fatty acid soap, it can be used without particular limitation as long as it is usually used in cosmetics, for example, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, linoleic acid, Preferred examples include linoleic acid, isostearic acid, lithinoleic acid, 12-hydroxystearic acid and the like. A particularly preferred form is a form containing a plurality of fatty acid residues, and containing as the fatty acid residue a branched fatty acid residue such as isostearic acid and / or a hydroxy fatty acid residue such as lithinoleic acid or 12-hydroxystearic acid. . In particular, the case of containing both is preferable. When both are used together, a product filled in a metering discharge container having a pump mechanism such as a pump container or a pump former has a constant discharge property and a target in a wide temperature range from a high temperature range to a low temperature range. Retains clogging and can realize excellent usability. A preferable ratio of the branched fatty acid in the fatty acid constituting the fatty acid soap is 1 to 15% by mass, and more preferably 5 to 10% by mass with respect to the total amount of the fatty acid. If the amount is less than this, clogging may occur or ejection properties may be impaired in a low temperature range. If the amount is too large, high temperature stability may be impaired. Moreover, preferable content of a hydroxy fatty acid is 1-20 mass% with respect to the said fatty acid total amount, More preferably, it is 5-15 mass%. If it is less than this, the discharge will be remarkable in the high temperature range, the contents may jump out, the contents may be separated, or the discharge part may be clogged, and if more than this, the temperature will be low There is a case where the dischargeability is impaired in the area. As described above, when the container having the pump mechanism is filled, suppressing clogging of the discharge port remarkably improves the foam quality of the foam to be formed. This effect is particularly remarkable when a pump former container is employed. Further, the alkali constituting the fatty acid soap can be used without particular limitation as long as it is usually used in cosmetics, for example, alkali metal salts such as sodium salts and potassium salts, alkali salts such as calcium salts and magnesium salts, etc. Preferred examples include earth metal salts, ammonium salts, triethylamine salts, triethanolamine salts, organic amine salts such as monoethanolamine salts, and basic amino acid salts such as lysine salts and alginates. Particularly preferred is a form in which sodium and potassium are used in combination, and in this case, the mass ratio of sodium and potassium is particularly preferably from 1:20 to 1: 5.

(2) Polyoxyethylene alkyl (alkenyl) ether acetic acid which is an essential component of the cosmetic of the present invention The cosmetic of the present invention is a cosmetic for washing, which is represented by the general formula (1). It contains 0.1 to 10% by mass of ethylene alkyl (alkenyl) ether acetic acid and / or salt. In the general formula (1), R represents an alkyl group, and the alkyl group has 8 to 20 carbon atoms, more preferably 10 to 18 carbon atoms, and the alkyl (alkenyl) group may have a branched structure. It may be good or may have a ring structure. Specific examples include octyl group, isooctyl group, 2-cyclohexylethyl group, decyl group, dodecyl group, tridecyl group, tetradecyl group, hexadecyl group, octadecyl group, isostearyl group and the like. Particularly preferred is a tridecyl group. N represents the average number of added moles, and n is an integer of 1 to 30, more preferably an integer of 2 to 20. Such a compound is obtained by adding ethylene oxide to an alcohol and then reacting a free hydroxyl group with sodium hydride or the like to derive an alcoholate and reacting with ethyl bromide acetate, and then an alkaline aqueous solution such as an aqueous sodium hydroxide solution. It can manufacture by hydrolyzing with. The preferable addition mole number of the preferable oxyethylene in the said polyoxyethylene alkyl (alkenyl) ether acetic acid is 1-10, More preferably, it is 2-7. Such polyoxyethylene alkyl (alkenyl) ether acetic acid and / or a salt thereof already exists on the market, and such a commercial product can be purchased and used. Preferable commercial products are polyoxyethylene alkyl ether acetate sodium salt, “Nikkor ECTD-3NEX (average number of moles of polyoxyethylene added 3)” (manufactured by Nippon Surfactant) and “Sandpan DTC” (Clariant Japan Co., Ltd.) (Made by company) etc. can be illustrated suitably. Such an ingredient works together with the fatty acid soap to generate a fine-textured and strong foam, and at the same time, has an action of improving the action including the fat-soluble component of the foam. Due to such an action, when used in the form of a pump former, the volume is large, and the size of one foam generates fine bubbles, efficiently including oily dirt and aqueous dirt. Easily removes from the skin.

(3) Cosmetics of this invention The cosmetics of this invention contain the said essential component, It is for washing | cleaning, It is characterized by the above-mentioned. The term “for washing” as used in the present invention is a generic term for cosmetics used in the form of washing away with an aqueous carrier for the purpose of removing dirt. Shampoos, body shampoos, facial cleansing creams, makeup remover lotions, bar soaps, pump forming A cleaning material etc. can be illustrated preferably. Among these, the pump-forming cleaning material is in the form of a pump former that fills a pump former container and forms foam with the pump former.

  In addition to such components, the cosmetic of the present invention can contain optional components that are usually used in cosmetics for washing. Examples of such optional ingredients include macadamia nut oil, avocado oil, corn oil, olive oil, rapeseed oil, sesame oil, castor oil, safflower oil, cottonseed oil, jojoba oil, coconut oil, palm oil, liquid lanolin, and hardened coconut oil. Oil, wax, oils such as beeswax, owl, hydrogenated castor oil, beeswax, candelilla wax, carnauba wax, ibotarou, lanolin, reduced lanolin, hard lanolin, jojoba wax, liquid paraffin, squalane, pristane, ozokerite, paraffin, ceresin, petrolatum Hydrocarbons such as microcrystalline wax; higher alcohols such as cetyl alcohol, stearyl alcohol, isostearyl alcohol, behenyl alcohol, octyldodecanol, myristyl alcohol, cetostearyl alcohol; Cetyl octoate, isopropyl myristate, hexyl decyl isostearate, diisopropyl adipate, di-2-ethylhexyl sebacate, cetyl lactate, diisostearyl malate, ethylene glycol di-2-ethylhexanoate, neopentyl glycol dicaprate, Synthetic esters such as glycerin di-2-heptylundecanoate, glyceryl tri-2-ethylhexanoate, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triisostearate, pentane erythritol tetra-2-ethylhexanoate Oils: Chain polysiloxanes such as dimethylpolysiloxane, methylphenylpolysiloxane, diphenylpolysiloxane; octamethylcyclotetrasiloxane, decamethylcyclopentasiloxa , Cyclic polysiloxanes such as dodecamethylcyclohexanesiloxane; oils such as silicone oils such as amino-modified polysiloxane, polyether-modified polysiloxane, alkyl-modified polysiloxane, and fluorine-modified polysiloxane; and the like; fatty acid soap (lauric acid) Sodium, sodium palmitate, etc.), anionic surfactants such as potassium lauryl sulfate, alkyl sulfate triethanolamine ether; cationic surfactants such as stearyltrimethylammonium chloride, benzalkonium chloride, laurylamine oxide; imidazoline-based amphoteric Surfactant (2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxy disodium salt, etc.), N-acylglycine and / or its salt and N-acylglutamine Amino acid surfactants such as acids and / or their salts, betaine surfactants (alkylbetaines, amidebetaines, sulfobetaines, etc.), amphoteric surfactants such as acylmethyltaurine; sorbitan fatty acid esters (sorbitan monostears) Rates, sorbitan sesquioleate, etc.), glycerin fatty acids (glyceryl monostearate, etc.), propylene glycol fatty acid esters (propylene glycol monostearate, etc.), hardened castor oil derivatives, glycerin alkyl ethers, POE sorbitan fatty acid esters (POE) Sorbitan monooleate, polyoxyethylene sorbitan monostearate, etc.), POE sorbite fatty acid esters (POE-sorbite monolaurate, etc.), POE glycerin fatty acid esters (POE-glyceri) Monoisostearate, etc.), POE fatty acid esters (polyethylene glycol monooleate, POE distearate, etc.), POE alkyl ethers (POE2-octyldodecyl ether, etc.), POE alkyl phenyl ethers (POE nonylphenyl ether, etc.), Pluronic type , POE / POP alkyl ethers (POE / POP2-decyltetradecyl ether, etc.), Tetronics, POE castor oil / hardened castor oil derivatives (POE castor oil, POE hardened castor oil, etc.), sucrose fatty acid ester, alkyl Nonionic surfactants such as glucoside; polyethylene glycol, glycerin, 1,3-butylene glycol, erythritol, sorbitol, xylitol, maltitol, propylene glycol, dipropylene glycol Polyhydric alcohols such as coal, diglycerin, isoprene glycol, 1,2-pentanediol, 2,4-hexanediol, 1,2-hexanediol, 1,2-octanediol; sodium pyrrolidonecarboxylate, lactic acid, lactic acid Moisturizing ingredients such as sodium; powders such as mica, talc, kaolin, synthetic mica, calcium carbonate, magnesium carbonate, anhydrous silicic acid (silica), aluminum oxide, barium sulfate, etc., whose surface may be treated; Bengara, yellow iron oxide, black iron oxide, cobalt oxide, ultramarine, bitumen, titanium oxide, zinc oxide inorganic pigments that may be treated on the surface; titanium mica, fish phosphorus that may be treated on the surface Pearls such as foil and bismuth oxychloride; red 202, red 228, red 226, which may be raked, Yellow No. 4, Blue No. 404, Yellow No. 5, Red No. 505, Red No. 230, Red No. 223, Orange No. 201, Red No. 213, Yellow No. 204, Yellow No. 203, Blue No. 1, Green No. 201, Purple 201 No., organic dyes such as red No. 204; organic powders such as polyethylene powder, polymethyl methacrylate, nylon powder, organopolysiloxane elastomer; paraaminobenzoic acid UV absorber; anthranilic acid UV absorber; salicylic acid UV absorbers; cinnamic acid UV absorbers; benzophenone UV absorbers; sugar UV absorbers; 2- (2′-hydroxy-5′-t-octylphenyl) benzotriazole, 4-methoxy-4 ′ UV absorbers such as t-butyldibenzoylmethane; lower alcohols such as ethanol and isopropanol; vitamin A or Is a derivative thereof, vitamin B6 hydrochloride, vitamin B6 tripalmitate, vitamin B6 dioctanoate, vitamin B2 or a derivative thereof, vitamin B12 such as vitamin B12, vitamin B15 or a derivative thereof; α-tocopherol, β-tocopherol, γ-tocopherol Vitamin E such as vitamin E acetate, vitamin D, vitamin H, pantothenic acid, pantethine, pyrroloquinoline quinone and the like can be preferably exemplified. The cosmetic of the present invention can be produced by treating these components and the essential components described above according to a conventional method.

  Hereinafter, the present invention will be described in more detail with reference to examples, but it goes without saying that the present invention is not limited to such examples.

  According to the prescription shown below, the foaming detergent which is the cosmetic of the present invention was produced. In other words, the ingredients of A, B, and C are each heated to 80 ° C., and the ingredients are added to A while stirring and stirred. Was formed into a pump former that discharged 1 mL once. In the same manner, Comparative Example 1 in which “Nikkor ECTD-3NEX” was replaced with palm oil fatty acid polyoxyethylene glyceryl, Comparative Example 2 in which potassium N-lauroyl glutamate was substituted, Palm oil fatty acid polyoxyethylene glyceryl and N-lauroyl Comparative Example 3 substituted with an equivalent mixture with potassium glutamate and Comparative Example 4 substituted with water were also prepared.

<Test Example 1>
For foaming cleaning material 1, Comparative Example 1, Comparative Example 2, Comparative Example 3, and Comparative Example 4, a foam discharge test was performed. That is, the sample was stored at 5 ° C., 20 ° C., and 40 ° C. for 24 hours, weighed and discharged three times under each temperature condition, and the average volume per time of the discharged bubbles was measured. The results are shown in Table 2 (unit: cm ³ ). From this, it can be seen that the foam discharged by the cosmetic of the present invention is always good regardless of the temperature condition.

<Test Example 2>
An oil stain removal test was performed on the forming cleaning material 1, Comparative Example 1, Comparative Example 2, Comparative Example 3 and Comparative Example 4. That is, 40 mg is applied to a 2 cm × 2 cm portion where the lip color is provided on the inner side of the upper arm, the prescription shown in Table 3 below, and this is applied with foam (1 push) from the cosmetics and rubbed. The color difference (ΔE) from the non-treated part was measured with a “color difference meter” manufactured by Konica Minolta Co., Ltd. The results are shown in Table 4. This shows that the cosmetic of the present invention is excellent in the action of removing oil stains.

  In the same manner as in Example 1, a forming cleaning material 2 was produced according to the following formulation. In the evaluation of Test Example 1, the foam discharge amount is 72.3 ± 5.9 (5 ° C.), 74.5 ± 6.2 (20 ° C.), 70.3 ± 7.3 (40 ° C.), In the evaluation of Test Example 2, ΔE was 0.37, and the same effect was recognized.

  In the same manner as in Example 1, a forming cleaning material 3 was produced according to the following formulation. In the evaluation of Test Example 1, the amount of foam discharged is 68.3 ± 5.1 (5 ° C.), 72.1 ± 6.9 (20 ° C.), 69.1 ± 6.2 (40 ° C.), In the evaluation of Test Example 2, ΔE was 0.54 and the same effect was observed, but it was confirmed that a form containing a hydroxy fatty acid and a branched fatty acid is preferable.

  The present invention can be applied to cosmetics for cleaning.

Claims (5)

1) In a cosmetic for washing, which contains 5 to 20% by mass of fatty acid soap as a washing component, 0.1 to 10 mass of a compound represented by the following general formula (1) and / or a salt thereof: % Cosmetics for cleaning, characterized by containing.

General formula (1)
(In the formula, R represents an alkyl group or an alkenyl group which may have a branched or cyclic structure having 8 to 20 carbon atoms, and n represents an integer of 1 to 30.) The cosmetic for washing according to claim 1, wherein the fatty acid soap is a mixture of a fatty acid potassium soap and a fatty acid sodium soap. The cosmetic for washing according to claim 1 or 2, wherein the fatty acid constituting the fatty acid soap contains isostearic acid and 12-hydroxy fatty acid. The cleaning cosmetic according to any one of claims 1 to 3, wherein the compound represented by the general formula (1) is polyoxyethylene tridecyl ether acetic acid. The cleaning material according to any one of claims 1 to 4, wherein the cleaning material is in the form of a pump former.