JPS63264512A - Aqueous cosmetic - Google Patents

Abstract

PURPOSE:To obtain an aqueous cosmetic having an excellent feeling of use of stably blended phospholipid and excellent safety, by using stable hydrogenated phospholipid as a phospholipid and blending the hydrogenated phospholipid with a liquid hydrocarbon, a specific surface active agent and ethanol in a specific ratio. CONSTITUTION:(A) A hydrogenated phospholipid having high stability to oxidation and heat is used as a phospholipid and blended with (B) a liquid hydrocarbon, (C) a surface active agent selected from an anionic surface agent and a nonionic surface active agent, having >=12 HLB value and (D) ethanol in the blending ratio of 0.05-5wt.% component A, 0.05-5wt.% component B, 0.05-5wt.% component C, 1-40wt.% component D in the weight ratio of the component A/C of 0.2-5 and the component (A+B)/C of 0.2-5 to give an aqueous cosmetic stably blended with phospholipid, having protecting effect, moisture retaining effect and surface activating effect on the skin without causing change such as turbidity, sedimentation, separation, precipitation of crystal and elimination of turbidity in a wide temperature range, having excellent feeling in use and safety.

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to a novel aqueous cosmetic composition, and more particularly, to an aqueous cosmetic composition stably containing a hydrogenated phospholipid. [Prior Art] Phospholipids are constituent components of biological membranes, are extremely safe to the skin, and have skin protective effects, moisturizing effects, and surfactant effects, and are therefore used as raw materials for cosmetics. However, since natural phospholipids contain a large amount of unsaturated fatty acids, they are unstable to oxidation and heat, making it difficult to stably incorporate them into cosmetics. Hydrogenated phospholipids are obtained by hydrogenating phospholipids, and have significantly improved stability against oxidation and heat. However, hydrogenated phospholipids are highly crystalline, and when added to aqueous cosmetics, it is difficult to prevent crystallization, and crystallization often progresses, giving the aqueous cosmetics a pearl-like appearance. For example, JP-A-59-2
No. 12418 proposes a pearlescent agent for cosmetics by utilizing the crystallinity of hydrogenated lecithin. Also,
In water-based cosmetics, attempts have been made to increase the amount of surfactants used in order to prevent crystallization of hydrogenated phospholipids. [Problems to be Solved by the Invention] As described above, various studies have been made to stably incorporate phospholipids into aqueous cosmetics. However, even if hydrogenated phospholipids, which are stable as phospholipids, are used, when added to aqueous cosmetics,
It was difficult to prevent its crystallization. Furthermore, when a large amount of surfactant is added to prevent crystallization, satisfactory cosmetics cannot be obtained in terms of functionality and safety. [Means for Solving the Problems] In view of the above-mentioned points, the present inventors conducted extensive research to obtain an aqueous cosmetic that stably contains phospholipids and has excellent usability and safety. The present invention was completed by discovering that an aqueous cosmetic with excellent stability and usability can be obtained by blending a specific proportion of liquid hydrocarbon and a specific proportion of surfactant with added phospholipid. . That is, the present invention provides hydrogenated phospholipids (component A) 0
．． 05 to 5% by weight and liquid hydrocarbon (component B) 0.0
5 to 5% by weight, 0.05 to 5% by weight of a surfactant with an HLB value of 12 or more selected from anionic surfactants and nonionic surfactants (component C), and 1 to 4% of ethanol.
0% by weight, and the weight ratio of component A/component C is 0.2.
5, and the weight ratio of (A component, C component)/B acid component is 0.2 to 5. The hydrogenated phospholipid used in the present invention has an iodine value of 30
The following are preferred, and in addition to natural lecithins such as soybean lecithin and egg yolk lecithin that are hydrogenated according to conventional methods,
Examples include hydrogenated phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, etc., and one or more of these may be used in combination. The liquid hydrocarbon used in the present invention may be one that is liquid at room temperature and is normally used as a raw material for cosmetics, such as stanlan, pristane, liquid paraffin, and low-viscosity polybutene (viscosity 5 to 1000 cst). )
etc., and these may be used alone or in combination of two or more. Examples of the anionic surfactants used in the present invention include fatty acid salts, alkylbenzene sulfonates, alkyl sulfonates, α-olefin sulfonates, dialkyl sulfosuccinates, α-sulfonated fatty acid salts, sodium N
-Methyl-N-alkyl taurine, polyoxyethylene alkyl ether sulfate, polyoxyethylene alkyl phenyl ether sulfate, alkyl phosphate, polyoxyethylene alkyl ether phosphate, polyoxyethylene alkyl phenyl ether phosphate, N-acyl glutamic acid salts, N-acyl-N-alkyl amino acid salts, O-alkyl substituted malates, etc., and those having an HLB value of 12 or more can be used singly or in combination of two or more. Nonionic surfactants include, for example, decaglycerin fatty acid ester, polyglycerin fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyethylene glycol fatty acid ester, polyoxyethylene alkyl ether, Polyoxyethylene phytosterol, polyoxyethylene phytosterol, polyoxyethylene polyoxypropylene alkyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, polyoxyethylene lanolin, polyoxyethylene lanolin alcohol, Polyoxyethylene alkylamine, polyoxyethylene fatty acid amide, polyoxyethylene alkylphenyl formaldehyde condensate, sucrose fatty acid ester, etc.
Those having an LB value of 12 or more can be used alone or in combination of two or more. Each component used in the present invention is blended in a specific amount and in a specific ratio. That is, the amount of hydrogenated phospholipid (component A) is 0.05 to 5% by weight, the amount of liquid hydrocarbon (component B) is 0.05 to 5% by weight, and the amount of anionic surfactant and HLB value selected from nonionic surfactants! The blending amount of two or more surfactants (component C) is 0.05~
5% by weight, and the blending amount of ethanol is 1 to 40% by weight.
It is. Moreover, the weight ratio of component A/component C is 0.2 to
5, and the weight ratio of (A component, C component)/B acid component is 0.
It is 2-5. Within this range, there will be no change in white turbidity, precipitation, separation, precipitation of crystals, disappearance of white turbidity, etc. over a wide temperature range, and an aqueous cosmetic containing a stable combination of hydrogenated phospholipids can be obtained. Moreover, the usability and safety are also good. The aqueous cosmetic composition of the present invention has a translucent to cloudy appearance, and has a transmittance of 0 to 95% when measured with a spectrophotometer. The aqueous cosmetics referred to in the present invention are those containing purified water as a main component.
Soft lotion, nutritional lotion, astringent lotion, cleansing lotion,
These include beauty serums and hair lotions. The method for producing an aqueous cosmetic of the present invention includes an alcohol component comprising a hydrogenated phospholipid, a liquid hydrocarbon, a surfactant with an HLB value of 12 or more selected from anionic surfactants and nonionic surfactants, and ethanol. may be added to the xylem whose main component is purified water, or conversely, the xylem may be added to the alcoholic part.
Moreover, at this time, the alcohol part and the wood part may be warmed or heated as appropriate. Furthermore, in the present invention, in addition to the above-mentioned essential ingredients, fragrances, pigments, preservatives, bactericidal agents, humectants, UV absorbers, salts, bases, chelating agents, thickeners, pearling agents,
Surfactants, oil agents, various drugs, etc. may be appropriately blended. [Example] Next, the present invention will be further described with reference to Examples. These do not limit the invention in any way. Examples H1 to [4], Comparative Examples Hl to [8] Examples [1] to [4], Comparative Examples [11 to

The formulations are shown in Table 1 along with [61] and the amounts in Table 6 are weight %. For each Example and Comparative Example, the transmittance was measured on the day of manufacture, and the stability over time was checked after 3 months. The results are also shown in Table 1. (Measurement of transmittance) ■A Shimadzu spectrophotometer υV-180 was used. The measurement conditions were 500n intestine and lc■0 The measured values in the table are in %, where 100 indicates complete transparency and 0 indicates complete cloudiness. (Checking stability over time) Stability over time was determined by checking the appearance of the samples set at 5°C, room temperature, and 40°C after 3 months. Furthermore, for stable materials, transmittance measurements were also performed. Table 1 Table 1 (Continued) (Manufacturing method) A(1) to (7) are heated and mixed at 60°C. B Dissolve (8) and (9) by heating at 60°C. Add A to CB and emulsify. Finish by cooling the DC to 35°C. As is clear from the results in Table 1, Examples of the present invention [11
- In the case of 1, various water-based cosmetics can be obtained that are translucent to cloudy, and also have excellent stability over time in a wide temperature range and have almost no change in turbidity. Ta. On the other hand, those containing no liquid hydrocarbon (Comparative Example [1],
[2]) has poor stability because hydrogenated phospholipids precipitate as crystals, and the product containing liquid oil other than liquid hydrocarbon (Comparative Example [3]) separates. The one with a small blending ratio of liquid hydrocarbon (Comparative Example [41]) has poor stability at high temperatures, and the one with a large blending ratio of a surfactant with an HLB value of 12 or more (Comparative Example [51]) also has a low blending ratio. The one with a small amount (Comparative Example [81)] also has poor stability. Examples [5] to [81] Comparative examples [7], [8] Examples [51 to [8], Comparative examples [7], [8]
The formulations are shown in Table 1 and Table 2. The blending amounts in Table 1 are weight %. The manufacturing method is based on Example [11]. Transmittance measurements and sensory evaluations were performed for each Example and Comparative Example. The results are also shown in Table 2. (Sensory Evaluation) For the sensory evaluation, a usage test was conducted with an expert panel consisting of 1 woman, and a 5-point evaluation was made for 3 items. Evaluation items: (1) Refreshing feeling during use 2) Refreshing feeling after use (3) Moist feeling after use 5 points rating: 2 Very felt 1 Feeling 0 Neutral - 1 Not feeling - 2 Not feeling at all Sensory evaluation that cannot be evaluated is the average value of a panel of 10 experts, and is shown as follows. 0 1~2 o O~1 Δ -1~O
~ [8] Various aqueous cosmetics that are translucent to cloudy are obtained, and also feel fresh during use, and feel light and moist after use. An aqueous cosmetic with excellent sensory properties was obtained. On the other hand, those containing a small amount of each essential component (comparative example [71
) does not give a moist feeling after use, and contains a large amount of liquid hydrocarbon (comparative example [81] does not give a fresh feeling during use and does not give a refreshing feeling after use. Example [8] Nutritional lotion (prescription) (weight%) (1)
Hydrogenated egg yolk lecithin 0.6 (2)
Stan Run 1.0 (3)
Decaglyceryl monolaurate 0.4 (HLB value 1
5.5) (4) Fragrance 0.1 (5
) Preservative 0.1 ([Ethanol 10.0 (7) 1.3
-Butylene glycol 6.0(8) Pigment
Appropriate amount (9) Purified water
Remaining amount (manufacturing method) A (1) to (6) are heated and mixed at 60°C. B(7) to (8) are heated and dissolved at 60°C. Add A to CB and emulsify. Cool the DC to 35°C to obtain a nutritional lotion. The nutritious lotion obtained as described above had a beautiful cloudy appearance, had a light feeling on use, and left the skin moist and moisturized after use. Moreover, the stability was also good. Example [101 Astringent lotion (prescription) (ERW%) (1)
Hydrogenated soybean lecithin 0.6 (thirsty) Pristane 0.3 (3) Dipotassium glycyrrhizinate 0.2 (anion) (di-α-me α-tocopherol 4acetate, 05 (5)
) Fragrance 0.1 ((to)
Preservative 0.1 (2) Ethanol 20.0 (8) Hydrolyzed collagen 0.1 (9) Pigment
Appropriate amount 60) Purified water
Remaining amount (manufacturing method) A (1) to (7) are heated and mixed at 60°C. B(8) to (lO) are dissolved by heating at 60°C. Add A to CB and emulsify. Cool the DC to 35°C to obtain an astringent lotion. The astringent lotion obtained as described above had a translucent appearance, spread well, blended well into the skin, and had a refreshing feeling on use. There was no change in translucency and the stability over time was good. Example [111 Hair lotion (formulation) (wt%) (1)
Hydrogenated egg yolk lecithin i. (li liquid paraffin 2.0 (3)
Sucrose fatty acid ester (HLB 1.5 value 18
．． 0) (4) Fragrance 0.2 (5
) Disinfectant 0.1 (@Mi-Menthol 0.01 (7) Ethanol 35.0 (8) Propylene glycol 3.0 (Odor Cationized cellulose 0.05 (10) Purified water
Remaining amount (manufacturing method) A (1) to (7) are heated and mixed at 60°C. B(8) to (lO) are dissolved by heating at 60°C. Add B to CA and emulsify. Cool the DC to 35°C to obtain hair lotion. The hair lotion obtained as described above had a beautiful white cloudy appearance, and had a non-sticky and moist feeling on use. The stability over time was also good. Example [12] Beauty serum (prescription) (weight%) (1)
Mizusaku Haruka Soybean Lecithin 1.5 (Tsugaran 0.8 (3) Sodium Bile Acid (Anion) 0.8 (4) Jojoba Oil 0.1 (5) Fragrance
0.1 (6) Preservative
0.1(7) Ethanol
5.0(8) Glycerin
6.0(9) Sodium hyaluronate
0.1 (10) carboxyvinyl polymer
0.15 (1 Li Sodium hydroxide
0.03 (12) Purified water Remaining amount (manufacturing method) A (1) to (7) are heated and mixed at 80°C. B(8) to (12) are dissolved by heating at 80°C. Add A to CB and emulsify. Cool the DC to 35°C to obtain a serum. The serum obtained in the above manner had a translucent appearance, had a rich yet refreshing feeling upon use, and left the skin moist without any stickiness. There was no change in translucency and stability over time was also good. [Effects of the Invention] As detailed above, the aqueous cosmetic of the present invention is a translucent to cloudy aqueous cosmetic that stably contains phospholipids, and exhibits no change in white turbidity over a wide temperature range. , no precipitation, no precipitation of crystals, no disappearance of cloudiness, etc.Also, since hydrogenated phospholipids, liquid hydrocarbons, and ethanol are effectively blended, it has a moist feeling but does not feel sticky. It has now become possible to provide an aqueous cosmetic that has a fresh feeling on use without causing any dryness. that's all

Claims (1)

[Claims] (1) Hydrogenated phospholipid (component A) 0.05-5% by weight
, 0.05 to 5% by weight of liquid hydrocarbon (component B), and 0.05 to 5% by weight of a surfactant with an HLB value of 12 or higher selected from anionic surfactants and nonionic surfactants (component C).
5% by weight and 1 to 40% by weight of ethanol, A
An aqueous cosmetic characterized in that the weight ratio of component/component C is 0.2 to 5, and the weight ratio of component (A component+component C)/component B is 0.2 to 5.