JP2005320252A5 - - Google Patents

Description

The present invention relates to an aerosol cosmetic, and more particularly to an aerosol cosmetic useful for discharging heavy foam.

The aerosol cosmetic that normally discharges foam is a so-called dip tube type aerosol can filled with an emulsion and a gas component for foaming it, and using the pressure of the gas component, the emulsification It takes the structure which discharges from a nozzle as a foam. In such a foamed form, when the viscosity of the emulsion exceeds 10,000 m Pa · s , the discharge property is remarkably impaired, and when it is 20000 m Pa · s or more, almost no discharge is possible. For this reason, the contents for discharge are limited to those having fluidity such as emulsion. Therefore, the present condition is that there are significant restrictions on the blending of ingredients that improve foam strength and stiffness, and the use of continuous phases other than water.

As an alternative to the discharge of foam of such heavy, is contained a small amount of gas to a higher content of low viscosity flowable, after discharged as a cream, is Lupo strike foam dosage form gradually expanded devised As a container therefor, the contents to be discharged into one space part inside the two-chamber container separated by a partition wall that is movable and capable of separating the contents are filled, and the contents are placed in the other space part. Aerosol formulations have been developed that are filled with compressed gas that is pressurized for extrusion. This Ru aerosol container der so-called double chamber type (2 rooms form) (e.g., see Patent Document 1). However, although various double chamber technologies are known ( for example, Patent Document 2, Patent Document 3, Patent Document 4, Patent Document 5, Patent Document 6, Patent Document 7, Patent Document 8, Patent Document 9, Patent reference literature 10), to is not known to eject the foam in such form, others the viscosity is ejected in a foam of more than 20000 m Pa · s, to eject the aqueous emulsion also known It is not done.

On the other hand, the foam produced by the non-aqueous emulsion having a high viscosity, for example, when glycerin is used as the continuous phase, generates heat of hydration when discharged onto the skin, and is a heavy foam. for achieving the excellent thermal insulation effect, in the course of such esthetic, that Sosu excellent pack effect (e.g., see Patent Document 11, Patent Document 12). As a known method for forming heavy foam, a reactive foam pack is known in which a small amount of water is added to a powder mixture containing glycerin, sodium bicarbonate and citric acid, and carbon dioxide is generated at the time of use. It has only been done. Since this uses a small amount of water for foaming, even if a heavy foam is obtained, the thermal effect is greatly reduced. For this reason, development of the foam discharge technique of such a heavy glycerin emulsified content has been desired.

On the other hand, the content to be discharged is filled in one space portion inside the two-chamber container separated by the movable and separable partition wall, and the other space portion is pressurized to push out the content. An aerosol product filled with compressed gas, wherein the content contains a gas for foaming at the time of discharge, and the pressure of the compressed gas for extrusion is higher than the gas pressure of the gas contained in the content There is no known aerosol cosmetic that discharges the contents having a viscosity of 20000 m Pa · s or more as a foam together with gas.

In view of such a situation, the present inventors have sought for a technique for discharging a high-viscosity non-aqueous emulsion having a glycerin or the like as a continuous phase as a heavy foam, and as a result of earnest research efforts, A composition comprising a non-aqueous emulsion having a high viscosity and containing glycerin or the like as a continuous phase is prepared and discharged into one space inside the two-chamber container separated by a partition wall that is movable and separable. An aerosol cosmetic filled with a content and filled with a compressed gas that is pressurized to extrude the content in the other space, the gas for foaming the content during ejection, and the composition made, and the pressure of the compressed gas for extrusion, being higher than the gas pressure of the gas contained in the content, found that the aerosol cosmetic having such characteristics, the present invention It came to complete That is, the present invention relates to the following technique.
(1) A content containing a cosmetic composition composed of a non-aqueous emulsion having a viscosity of 20000 mPa · s or more in one space inside the two-chamber container separated by a partition wall that is movable and separable. An aerosol cosmetic that is filled and filled with a compressed gas that pressurizes to push out the content in the other space, and discharges the content as foam, the gas for foaming the content at the time of discharge further it contains, and the pressure of the compressed gas for extrusion, being higher than the gas pressure of the gas contained in the content, aerosol cosmetics.
(2) the Ri content gas pressure 0.17 ~ 0.45 m Pa der gas contained in the pressure of the compressed gas for the extrusion, the gas pressure of the gas contained in the content The aerosol cosmetic according to (1), which is higher by 0.05 mPa or more .
(3) The aerosol cosmetic according to (1) or (2), wherein the content contains 70% by mass or more of glycerin .
(4) The aerosol cosmetic composition according to (3), which has a warm feeling when applied .
(5), characterized in that a pack cosmetic, (1) to (4) aerosol cosmetic according to any one.
Hereinafter, the “aerosol cosmetic” of the present invention is simply referred to as “cosmetic”.

The cosmetic of the present invention includes a cosmetic composition comprising a non-aqueous emulsion having a viscosity of 20000 mPa · s or more in one space inside the two-chamber container separated by a partition wall that is movable and capable of separating contents. A cosmetic that is filled with contents, is filled with a compressed gas that is pressurized to push out the contents in the other space, and discharges the contents as foam , because the contents foam when discharged containing gas further and the pressure of the compressed gas for extrusion, being higher than the gas pressure of the gas contained in the content. As such a two-chamber container, as long as it is disclosed in Patent Documents 1 to 10, it can be used without any particular limitation, and as the partition wall that can move and separate contents, for example, Preferable examples are inner bags that can be deformed by pressurization, such as polyethylene, polypropylene, or polyethylene terephthalate, and that do not transmit the cosmetic composition and the gas component for foaming that constitute the contents. it can.

The container covering the outer side of the inner bag may conform to a normal aerosol container, and metal cans such as aluminum and stainless steel are preferably exemplified. The discharge nozzle can be used without particular limitation as long as it is normally used for discharging a foam aerosol.

The contents filled in the two-chamber container are composed of a cosmetic composition and a gas component for foaming. As the gas component for foaming, liquefied petroleum gas can be used, and its composition can be freely selected according to the state of foaming. After filling, the pressure is 0.17～0.45M Pa, more preferably, it is preferable to fill in adjusted to 0.20~0.40m Pa.

Constituting the content, the cosmetic composition, a cosmetic composition is used in cosmetics, the effect of the present invention is most exhibited a viscosity in the state free of gas 20000 m Pa · More than s , more preferably 25000 mPa · s or more are selected . The measurement temperature is 20 ° C. The dosage form tends to viscosity becomes very high and the temperature dependency exists in the viscosity, a non-aqueous emulsifier type. As the non-aqueous emulsifier form, those containing glycerin of 70% by mass or more, more preferably 75% by mass or more are particularly preferable. This is because such a dosage form is ejected in the form of a foam to form a foam that exhibits a warm feeling for a long time. Such foams are particularly preferred because they provide an excellent relaxation effect in aesthetic packs.

The cosmetic of the present invention is characterized in that the content is filled in an inner bag of a two-chamber container, and further, a gas for discharge is further filled in the outer bag. As the gas to be filled in the outside of the inner bag, than the gas for foaming contained in the content, 0.05 m Pa or more, more preferably, it is preferred higher pressures than 0.07 m Pa, The component configuration used is not particularly limited as long as the pressure condition is satisfied. Among these gas components, preferred examples include liquefied petroleum gas, carbon dioxide, compressed air, nitrogen gas, helium gas, and dimethyl ether.

<Example 1>
The cosmetic of the present invention was prepared according to the formulation shown below. That is, the ingredients (a) and (b) were each heated to 80 ° C., and (b) was gradually added to a under stirring, followed by stirring and cooling to obtain a cosmetic composition 1. The viscosity of this product was 30000 m Pa · s (B-type viscometer, No. 4 rotor) at 20 ° C. With liquefied petroleum gas this thing, the inner bag of the container shown in FIG. 1, the pressure was packed so that the 0.4 m Pa. On the outside of the inner bag, a liquefied petroleum gas pressure filling to be 0.45 m Pa, and sealed to obtain a cosmetic 1 is a cosmetic of the present invention. As Comparative Example 1, the cosmetic composition 1 together with liquefied petroleum gas to the normal aerosol can (room vessel), the pressure also prepared which was filled to be 0.45 m Pa. These were continuously discharged 30 times at 5 ° C., 20 ° C., and 40 ° C., and the discharge state was observed. The results are shown in Table 1. From this, the cosmetic of the present invention is not dependent on the temperature, it can be seen that having an effect of discharging the cosmetic composition of a high viscosity with good foam state. The foam of Cosmetic 1 was a heavy foam with a fine texture and a moist feel. This foam was very good as an aesthetic sensation pack.

<Example 2>
Create a the same manner as in Example 1 cosmetic composition 2 (viscosity at 20 ℃; 50000m Pa · s) , the inner bag of the container shown in FIG. 1, the pressure was packed so that the 0.4 m Pa. On the outside of the inner bag, a liquefied petroleum gas pressure filling to be 0.45 m Pa, and sealed to obtain a cosmetic 2 is a cosmetic composition of the present invention. As Comparative Example 2, the cosmetic composition 1 together with liquefied petroleum gas to the normal aerosol can (room vessel), the pressure also prepared which was filled to be 0.45 m Pa. The cosmetic 2 and the comparative example 2 were evaluated in the same manner as in Example 1. The results are shown in Table 2. From this, the cosmetic of the present invention does not depend on temperature, it can be seen that having an effect of discharging the cosmetic composition of a high viscosity with good foam state. The foam of cosmetic 2 was a heavy foam with a fine texture and very sticky. This foam was very good as an aesthetic sensation pack.

<Example 3>
A cosmetic composition 3 was prepared in the same manner as in Example 1 (viscosity at 20 ° C .; 100000 m Pa · s ), and filled in the inner bag of the container shown in FIG. 1 so that the pressure was 0.4 m Pa . On the outside of the inner bag, a liquefied petroleum gas pressure filling to be 0.45 m Pa, and sealed to obtain a cosmetic 2 is a cosmetic composition of the present invention. As Comparative Example 3, the cosmetic composition 1 together with liquefied petroleum gas to the normal aerosol can (room vessel), the pressure also prepared which was filled to be 0.45 m Pa. The cosmetic 3 and the comparative example 3 were evaluated in the same manner as in Example 1. The results are shown in Table 3. From this, the cosmetic of the present invention does not depend on temperature, it can be seen that having an effect of discharging the cosmetic composition of a high viscosity with good foam state. The foam of cosmetic 3 was a heavy foam with a fine texture and extremely sticky. This foam was very good as an aesthetic sensation pack.

Claims (5)

One space inside the two-chamber container separated by a partition wall that is movable and separable is filled with a content containing a cosmetic composition composed of a non-aqueous emulsion having a viscosity of 20000 mPa · s or more , The other space is filled with a compressed gas that is pressurized to extrude the content, and is an aerosol cosmetic that discharges the content as foam, further containing a gas for foaming the content when discharged And the aerosol cosmetics characterized by the pressure of the compressed gas for extrusion being higher than the gas pressure of the gas contained in the said content. Ri gas pressure 0.17 ~ 0.45 m Pa der gases contained in the content, the pressure of the compressed gas for the extrusion, than the gas pressure of the gas contained in the content, 0 The aerosol cosmetic according to claim 1, wherein the aerosol cosmetic is higher than 0.05 mPa . The aerosol cosmetic according to claim 1 or 2 , wherein the content contains 70% by mass or more of glycerin. The aerosol cosmetic composition according to claim 3 , which has a warm feeling when applied. The aerosol cosmetic according to any one of claims 1 to 4 , wherein the aerosol cosmetic is a pack cosmetic.