JPS61158909A - Pack - Google Patents

Abstract

PURPOSE:To provide a pack applicable easily and exhibiting high sealing property (pack effect) in use, by compounding specific amounts of a hydrophilic nonionic surfactant, a higher alchol, a liquid oil component, water and/or a polyhydric alcohol, a propellant, and, if necessary, a higher fatty acid. CONSTITUTION:The objective pack, especially a slow-foaming aerosol composition having the convenience of the conventional film-type pack and the treatment effect of a foam-type pack is composed of (A) 1-10wt%, especially 3-6wt% hydrophilic nonionic surfactant having an HLB of 9-18, (B) 0.5-3wt% preferably 16-22C higher alcohol, (C) 0-6wt% preferably 12-22C, especially 18-22C higher fatty acid, (D) 0.5-40wt%, especially 5-10wt% liquid oil component, (E) 40-96wt% water and/or polyhydric alcohol and (F) 2-8wt% propellant having a boiling point of preferably 20-30 deg.C.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel backing material for cosmetics.
The purpose of the present invention is to provide an excellent pack material, in particular a slow-foaming aerosol type pack material, which has a good packing effect.

Traditionally, various types of packs for cosmetics have been known, including film, cream, gel, mud, and foam, but among these, film and foam are the most common. be.

However, film packs have some advantages such as tight feeling when drying, shielding properties of the film, and ease of use after use.
There were disadvantages such as long drying time and the fact that once applied, it could not be removed until dry.

On the other hand, foam packs are clearly differentiated from other packs in terms of formulation, and have the effect of increasing skin temperature and accelerating metabolism by blocking the outside air through a membrane of bubbles dispersed in the emulsion. It is characterized by In addition, it does not require drying properties unlike film pack materials, allows the pack time to be freely selected, has a good feel, and has a high treatment effect. However, conventional foam packs,
Since the foam is applied directly to the face, the foam must have good physical properties such as hardness, adhesion, and adhesion, but it has been difficult for ordinary aerosol products to always provide a foam that meets certain conditions.

Furthermore, some slow-foaming aerosol products have been proposed, mainly for shaving preparations, but they have fatal flaws when directly applied to pack preparations. In other words, when attempting to form the pack material of the present invention using a conventional formulation consisting of an anionic surfactant centered on soap and water, the physical properties of the foam required for the pack material were first determined. In order to achieve this, a large amount (e.g., 8x ffi% or more) of the active agent is required, which causes safety problems such as irritation, and secondly, it imparts an emollient effect, which is an essential requirement for pack materials. A small amount of oil (about 1
This was due to problems such as the inability to mix L at the end of weight t%, and if you dare to mix a large amount, the oil acts as an antifoaming agent and does not form a good foam. .

Therefore, the present inventors conducted various experiments in order to solve the problems faced by the conventional pack materials and obtain an excellent pack material that combines the simplicity of a film pack material and the treatment effect of a foam pack material. As a result of repeated research, it was discovered that a backing material with excellent properties can be obtained when various components described below are combined at a certain mixing ratio, and the present invention has been completed.

That is, the pack material of the present invention is composed of the following main components.

(a) Hydrophilic nonionic surfactant 1-10% by weight (b) Higher alcohol 0.5-3% by weight (e) Higher fatty acid 0-6% by weight
(d) Liquid oil content 0.5-40% by weight (6) Water and/or polyhydric alcohol 40-40%
96% by weight (0 propellant 2-8% by weight) - A detailed description of the invention follows.

First, the hydrophilic nonionic surfactant applied to the present invention has an HLB in the range of 9 to 18, and is used to form an emulsion composition or a liquid crystal composition of higher alcohol or higher fatty acid, which will be described later. Specific examples include diacarbonate sugar fatty acid ester, polyglycerin fatty acid ester, polyoxyethylene alkyl ether, polyoxyethylene alkyl allyl ether, polyoxyethylene rubitan fatty acid ester, polyoxyethylene glyceryl fatty acid ester, polyoxyethylene glyceryl fatty acid ester, Examples include oxyethylene phytostanol, polyoxyethylene hydrogenated castor oil, polyoxyethylene polyoxypropylene alkyl ether, polyoxyethylene fatty acid ester, and one or more of these are selected and used. .

(9) The amount to be blended is selected in the range of 1 to 1 liter, preferably 3 to 6 liters, based on the total amount of the pack material. If the amount is less than 1% by weight, emulsification or liquid crystallization will be insufficient and a good foam will not be obtained, which is not preferable. On the contrary, 10
Even if an amount exceeding % by weight is used, no further improvement in emulsification or liquid crystallization is observed, which is uneconomical, and should be avoided from the viewpoint of safety.

Next, the higher alcohol is added as a so-called foam forming agent, and those having a carbon number of 16 to 22 are advantageously used. Specifically, cetanol, cetostearyl alcohol, stearyl alcohol, behenyl alcohol, etc. can be selected as appropriate depending on the type of use and the desired form formation state, and may be used alone or in combination of two or more types. I do not care. The physical properties of the foam are affected by the number of carbon atoms in the higher alcohol, and as the number of carbon atoms increases, the foam becomes harder, so if a higher alcohol with an extremely large number of carbon atoms is used, the feel may deteriorate. Further, the blending amount is selected to be in the range of 0.5 to 3% by weight based on the total weight of the pack. If the amount is less than 0.5% by weight, the foam-forming power will be insufficient, and if the amount exceeds 3% by weight, the pack material composition will gel, making it impossible to obtain a high-quality product.

In addition, higher fatty acids are mainly used as foam forming aids for the above-mentioned higher alcohols, and those with a carbon number of 12 to 22 are preferred, especially those with a carbon number of 18 to 22 in consideration of safety.
Those within the range of are preferably used. Specifically, lauric acid, myristic acid, palmitic acid, stearic acid,
These include arachidic acid and behenic acid. The blending amount is preferably 0 to 6% by weight based on the total amount of the pack material. That is, as mentioned above, it is possible to form a foam using higher alcohol alone, but when trying to obtain a stronger foam, there is a limit to the amount of higher alcohol that can be used.

At this time, depending on the desired foam strength, if a higher fatty acid is used in combination, the desired foam strength can be obtained without causing gelation.

Next, the liquid oil may be one that is liquid or fluid at room temperature, such as squalane, liquid halafine, oleyl alcohol, lanolin alcohol, liquid lanolin, castor oil, hexadecyl alcohol, octyldodecyl myristate, myristicin. Examples include inopropyl acid, octyldodecyl oleate, cetyl 2-ethylhexanoate, triglyceride 2-ethylhexanoate, isopropyl palmitate, isopropyl lanophosphate, and silicone oil. The amount of liquid oil added can be freely selected within the range of 0.5 to 40% by weight based on the total amount of the pack material, but when considering foam stability and feeling of use, it is 5 to 10% by weight. Eel is also suitable.

In addition, solid oils such as beeswax, oshikerite, solid paraffin, microcrystalline wax, spermaceti, ceresin, carnauba wax, candelilla wax, etc. are also liquid or fluid at room temperature in a mixed state of liquid oil and solid oil. There is no problem in blending within the range that has the following.

In the present invention, water or polyhydric alcohol may be used alone or in combination in any ratio. Examples of the polyhydric alcohol used include 1,3-butylene glycol, ethylene glycol, propylene glycol, polyethylene glycol, chrycerin, and polyglycerin, but glycerin is particularly preferred because it easily forms a liquid crystal composition. I can say it. In addition, the blending ratio to the pack fee is
It can be freely selected within the range of 40 to 96 weight 1:%. At this time, the amount of water is 20 tons% of the polyhydric alcohol tVC.
If the amount of water is kept below, a pack material with a thermal sensation (hot bag) can be obtained, and conversely, if a large amount of water is contained, a pack material with a wet 7 ohm temperature can be obtained.

Finally, the propellants that can be used in a single manner according to the present invention include:
Globa 7 (bp-42℃ input, ty12 (bp-3
0°C), n-butane (bp-0,5°C), 7 Leon 11
4 (bp 3.6℃), Freoyl (bp 23℃), n
-<Butane (bp36℃), Freon 113 (bp47
C), and these are used alone or in combination as a propellant with a boiling point preferably in the range of 20 to 30C. When the intended pack material is a hot pack, the boiling point range mentioned above can be set at a temperature several times higher. By using such a propellant, the pack maintains a stable state for more than 3 minutes under static conditions (20°C, atmospheric pressure), and when applied to the skin (skin temperature 3
2° C.), foaming begins with a delay time of 10 seconds to several tens of seconds, although this varies depending on the viscosity and hardness of the composition. In addition, the amount of propellant mixed varies slightly because the gas volume after vaporization varies due to the difference in specific gravity of the propellant, but a range of 2 to 8% by weight is selected based on the total amount of the pack material. If the amount is less than 0.2 times, the 7 ohm formation will be a non-light component, and if the amount is more than 8% by weight, the quality as a υ pack material will deteriorate, such as a light and dull foam. Furthermore, residual gas may remain in the pack material after foaming, which is undesirable.

In addition to the above, various ingredients that are usually added to packs, such as various active agents other than hydrophilic nonionic surfactants, medicinal ingredients, pigments, preservatives, fragrances, etc., may be used within the scope of the present invention. Needless to say, it can be used in

Although the pack material of the present invention can be obtained using the main components described above, there are no particular restrictions on the method of manufacturing it, and it can be prepared by any known method.

In other words, an emulsified composition or a liquid crystal composition can be obtained by simply adding each substance suitably selected from the main components other than the propellant into a mixer and stirring. It can also be adjusted by adding a surfactant to form a surfactant continuous phase, adding an oily component thereto, and further diluting with water if necessary. Here, when the amount of water added is up to about 15% by weight relative to the amount of polyhydric alcohol, the composition gradually shifts to a liquid crystal composition, and as the water increases, it gradually shifts to an oil-in-water emulsion composition.

The mixture of a liquid crystal composition or an emulsified composition and a propellant can be divided into two types depending on the properties of the composition. For relatively fluid materials such as emulsions, the same method as for ordinary aerosol filling is used.On the other hand, for hard materials such as creams, further heating is performed after gas filling to make the composition fluid. Perform the shooting operation while holding the
It is necessary to incorporate sufficient gas into the composition.

Here, the features of the present invention are as follows.

(1) The pack material of the present invention is emulsion-like or cream-like when applied to the skin, so it is convenient and has good adhesion and uniformity to the skin. It has an excellent skin temperature raising effect and can be easily removed by washing.

(2) By being able to freely change the combination ratio of water and polyhydric alcohol and by setting the boiling point of the propellant to a relatively high state, the cold and irritating sensations caused by conventional gas volatilization are alleviated in the summer. Conversely, in winter, foam can be easily formed even when the outside temperature and skin surface temperature are low.

(3) Similarly, when a polyhydric alcohol is used alone or when it contains water (approximately 15 wt-i% or less relative to the amount of polyhydric alcohol), the liquid crystal composition has good foam formation due to its viscoelastic properties. Due to the thermal effect caused by heat generation and heat generation,
A pack treatment effect superior to conventional products can be achieved.

(4) The amount of surfactant is small compared to conventional soap-based soaps, and safety is good.

Next, in order to evaluate the pack material of the present invention, it was carried out according to the method shown below.

Sample (a) Cream-like pack material shown in Example 1 below.

(b) A cream-like pack material in which Freon 11 in Example 1 described later was replaced with LPG (vapor pressure 1.6 Kf/Cl1t or more, 20°C).

(c) Freon 11 in Example 1 described later was replaced with Freon 1.
Creamy backing material replaced with a mixed system of 1:LPG=2:1.

(d) Emulsion pack material shown in Example 2 below.

(e) 7 Leon 11 in Example 2 described later was replaced with LPG (
Steam pressure 1.6Kp/c7F! Milk i-form pack material substituted with -20°C).

(Freon 11 in Example 2 below was replaced by Freon 11:L
Emulsion pack material substituted with a mixed system of PG=2:1.

彊) Cream pack shown in Example 3 below.

<Evaluation method> Condition at the time of O discharge: When the pack material is discharged from the container (20
The state of temperature was observed.

O: Whether or not there is foaming under static conditions After applying the two-pack material to a plastic plate, the presence or absence of foaming under static conditions (20° C., atmospheric pressure) was observed.

O Presence or absence of foaming when applied to the skin: The presence or absence of foaming after applying the pack material to the face was observed.

The thermal sensation during use of the 0-thermal sensation double pack was evaluated.

0 Feeling of use - The overall feeling of use as a pack material (spreadiness, adhesion, treatment effect, etc.) was evaluated.

The number of samples and the number of female panelists were each n=5, and the foaming time was shown as an average value.

The results are shown in Table-1.

As shown in the results of Table 1 An-1, the degree of delayed foaming depends on the properties of the composition (viscosity, hardness, etc.) and the type of propellant, and the feeling of use varies accordingly. It has also been revealed that the thermal sensation is affected by the ratio of water and polyhydric alcohol contained.

Examples are shown below. However, the present invention is not limited to these Examples. Incidentally, the blending ratio is in parts by weight.

Example 1. Cream pack (4) Decaglycerin ester 4.0 Behenyl alcohol λ5 Stearic acid 1.5 Liquid paraffin ]5. O glycerin
64.0 Purified water &0(
B) Freon 11 5.0 (
Method) (A)f After uniform stirring at 80°C, the mixture was cooled and placed in a pressure container. Next, after adding (B), the mixture was heated and dispersed at 50°C with shaking, and then cooled to obtain a product.

Example λ Milky pack material (4) Hexaglycerin ester 3.0 sucrose fatty acid ester 1.0 cetanol
1.0 liquid paraffin
&0 squalane λ0 1.3-butylene glycol 5.0 glycerin 75.0 purified water 5.0 (B) Freon 11 s,
.

(Method) After uniformly stirring (4) at 80°C, it was cooled and placed in a pressure-resistant container. Next, after adding (B), the mixture was sufficiently photographed to obtain a product.

Example λ Cream pack (A) P, O, E (25 mm 74 toss ll) -k
5.0(B) Stearyl alcohol
3. O-behenic acid 1.0 Liquid paraffin 15.0 Oleyl alcohol a, 0(c) 1.3-Butylene glycol: f-
/l/ 10.0 (b) Glycerin
30.0 (6) Purified water 33.0 (Fan-Pentane 4.5n-)゛Tane 0.5 (Method) Mix and dissolve (4), (Q and part of (odor) at 80°C, After adding (B) to this, (2) and (the remainder of the odor) were added, the mixture was cooled, placed in a pressure-resistant container, and then (g) was added, followed by heating and shaking at 50°C. After dispersion, it was cooled to obtain a product.

Claims (1)

[Claims] 1) (a) 1 to 10% by weight of hydrophilic nonionic surfactant (b) 0.5 to 3% by weight of higher alcohol (c) 0 to 6% by weight of higher fatty acid (d) Liquid oil content A pack material comprising: 0.5 to 40% by weight (e) 40 to 96% by weight of water and/or polyhydric alcohol; and (f) 2 to 8% by weight of a propellant. 2) The pack according to claim 1, which is a slow-foaming aerosol composition.