JPH02247115A - Gradually foaming type late foaming composition - Google Patents

Abstract

PURPOSE:To obtain a gradually foaming composition which is prepared by dissolving a specific concentration of pressurized gas in an aqueous liquid of a specific viscosity at a specific temperature filling a shrinkable container having an outlet opening with the solution, thus gradually foaming, after it is pushed out and applied to a human body, for example, for washing face. CONSTITUTION:A pressurized gas is dissolved in an aqueous liquid having a viscosity of 500 to 8,000cps at 20 deg.C in a concentration of 200 to 500ppm. According to the present invention, a variety of wax such as paraffin or vaseline can be used as a base, when it is applied to human bodies. In addition, a low boiling substance such as n-pentane or isopentane may be added, for example, less than 5,000ppm.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to a foamed foam that is filled into a pressure-resistant shrinkable container having a discharge port and gradually foams to form a foam after being discharged. The present invention relates to a foaming type composition having post-foaming properties.

[Prior art]

In general, various compositions applied to the human body, such as human body cleansing foam used for face washing, skin cleansers such as body shampoo, or skin nutrients,
When it comes to shaving creams and other compositions, it is important to consider not only the ease of use, but also the actual feeling of use.
From other points of view, it is often preferred that the dosage form be a cream with post-foaming properties.

Conventionally, in order to obtain such post-foaming properties, low-boiling substances such as n-pentane and isopentane have been used as components of the composition.

According to such a composition, when the composition is discharged from the container, the contained low-boiling substance is vaporized by ambient temperature or body temperature, and the composition foams to form a foam.

[Problem to be solved by the invention]

However, in such post-foaming using a low-boiling substance, almost all of the low-boiling substance vaporizes within a relatively short period of time after the composition is discharged, and foaming occurs rapidly and excessively. Therefore, it is completely undesirable depending on the use of the composition. That is, for certain compositions applied to the human body, for example, it is important that the compositions be spread thinly on the skin after being dispensed, and that a good foaming state should be obtained thereafter, but conventional post-foaming compositions If the composition is made of a solid material, the composition may foam significantly before it is sufficiently extended, making it very inconvenient to use. In this way, conventional post-foaming compositions have a slow-foaming type post-foaming property in which foaming is gradually suppressed after discharge, and the foaming state is good overall. I couldn't.

The present invention has been made based on the above circumstances, and an object of the present invention is to provide a slow foaming type post-foaming composition that foams with appropriately suppressed foaming properties after being discharged. .

[Means to solve the problem]

The slow foaming type post-foaming composition according to the present invention is characterized in that the viscosity at a temperature of 20°C is from 500 to B.000.
It consists of an aqueous stock solution that is cps and a compressed gas, and when the compressed gas is dissolved in the stock solution and the compressed gas is dissolved in the stock solution, the concentration is 200%.
~5. It is characterized by being QQQppm.

The present invention will be explained in detail below.

In the present invention, an aqueous stock solution containing water as an essential component and various substances depending on the purpose of use are dissolved or dispersed as components and has a viscosity within a specific range is prepared, and this stock solution is compressed. Fill with gas into a pressure-resistant shrinkable container.

The amount of the compressed gas is determined to be such that the compressed gas is dissolved in the liquid phase of the stock solution and its concentration falls within a specific range when the contractible container is filled with the compressed gas.

In the above, the types and concentrations of the constituent components of the aqueous stock solution are not limited in any way, and can be appropriately determined depending on the use of the composition, the properties required for the composition, and other conditions.

In normal cases, this aqueous stock solution contains water constituting all or part of the liquid phase medium, a main agent or active ingredient selected depending on the application, and auxiliary agents and/or additives added as necessary. Additives are included as components thereof.

The main ingredient includes what is called a base. Examples of this base include, for example, in the case of compositions for the human body, paraffin, vaseline, various waxes, and the like. Various drugs and other substances are used as active ingredients.

This active ingredient does not necessarily have to be soluble in water.

As the auxiliary agent, a solvent, a surfactant, a dispersion stabilizer, and others for dissolving the active ingredient in the aqueous medium can be used.

Examples of additives include various powders, colorants, fragrances, and the like.

In the present invention, a low boiling point substance such as n-pentane or isopentane may be added to the stock solution in an amount of, for example, 5.000 ppm or less depending on the use of the composition.

For example, when used as a cosmetic composition, an oily component formed by ester bonding a saturated higher side chain alcohol such as octyldodecanol with an unsaturated higher fatty acid is used to improve skin permeability. It is preferable to add 5.0% by weight or less of the stock solution. Specific examples of such oily components include octyldodecyl myristate, octyldodecyl oleate, octyldodecyl wasylinate, octyldodecyl erucate, and octyldodecyl lanophosphate. In this case, the properties of the stock solution can be acidic, neutral or alkaline, but
The pH is usually in the range of 4 to 13.

In the present invention, the aqueous stock solution is prepared as a solution in which other components are dissolved in an aqueous medium, or as a dispersion in which some components are dispersed in such a solution or an aqueous medium. Here, the proportion of water in the stock solution is
It is preferably 70 to 97% by weight, especially 90 to 95% by weight.

In the present invention, the viscosity of this aqueous stock solution is required to be in the range of 500 to 8,000 cps at a temperature of 20°C. If the viscosity of this stock solution is lower than 500 cps, the fluidity of the composition is high, so when it is dispensed, rapid foaming will occur and the foam will break in a short period of time, resulting in the desired gradual foaming. Foam-type post-foaming properties, that is, sufficiently suppressed foaming properties cannot be obtained. On the other hand, if the viscosity of the stock solution is higher than 8.000 cps, foaming of the composition after discharge is excessively suppressed, making it impossible to obtain a good foaming state.

The aqueous stock solution is filled together with compressed gas into a pressure-resistant shrinkable container. This compressed gas is selected from gases that do not normally liquefy when pressurized at room temperature, but are slightly soluble in water. Specific examples of gases suitably used in the present invention include carbon dioxide gas, nitrous oxide gas, oxygen gas, nitrogen gas, argon gas, helium gas, and neon gas.

The amount of this compressed gas filled is such that when the compressed gas is filled in the shrinkable container, the compressed gas is dissolved in the liquid phase of the stock solution and its concentration is 2 by weight relative to the liquid phase of the stock solution.
00-5. The amount is set to be in the range of OOOppm. If the concentration of the compressed gas dissolved in this stock solution is less than 200 ppm, a good foam cannot be obtained;
．． If it is higher than QQQppm, it is not preferable because rapid foaming and foaming will occur after the composition is discharged.

The aqueous stock solution and compressed gas are filled into a pressure-resistant shrinkable container having a discharge port. As such a container, a so-called double container is preferably used. Specifically, for example, an aerosol container of a type in which a contractible inner bag is provided within a rigid outer bag, and the inner bag is contracted by a propellant filled between the two;
Alternatively, an aerosol container is a type in which an inflatable bag filled with a propellant is placed inside a rigid outer container, and the space inside the outer container is reduced and deflated by the pressure of the propellant, or a relatively rigid type called an Excel type. Containers consisting of an outer shell made of an elastic material and an inner container made of a flexible elastic material, the outer shell being deformed so as to be crushed so that the inner container contracts and its contents are discharged, and other containers using a propellant. A highly viscous fluid discharge container whose contents are discharged by being deflated by pressure or by hand can be preferably used.

[Operation and effects of the invention]

When the slow foaming type post-foaming composition of the present invention is filled in a shrinkable container, a portion of the compressed gas is dissolved in the stock solution, but when it is discharged from the container, the surrounding Due to the atmospheric pressure or even under the influence of ambient temperature or body temperature, the compressed gas dissolved in the stock solution evaporates, resulting in foaming and formation of a foam.

In the present invention, the viscosity of the stock solution at a temperature of 20° C. is in the range of 500 to 8,000 cps, and the stock solution has compressed gas dissolved in the concentration range of 200 to 5.000 ppm. Due to the balance between the viscosity of do. Therefore, the composition can be spread thinly after being discharged, and even after that, gentle foaming is continued and a good foam is finally formed. Moreover, in the discharged state, the composition has good elongation properties because the compressed gas is appropriately dissolved. As a result, it is possible to obtain an overall soft and good feeling of use.

In the present invention, a foamed product is obtained using compressed gas as described above, but if the stock solution contains a low-boiling point substance, foaming properties due to the low-boiling point substance are also expected. In this case, by controlling the ratio of the compressed gas and the low boiling point substance, it is possible to achieve a preferable foamability.

The slow foaming type post-foaming composition according to the present invention can be used for various purposes depending on the types of its composition components. That is, the product can be used not only for the human body but also for insecticides, cleaners, coatings, and the like.

〔Example〕

Hereinafter, the case where the post-foaming composition of the present invention is prepared as various cosmetics will be explained. Note that the unit of "%" is % by weight.

Example 1 [Example of formulation of cream composition] Stearic acid 8.0% beeswax
4.5% cetanol
2.0% lanolin
2.0% liquid paraffin
7.0% polyoxyethylene sorbicun monostearate 4.5% sorbitan monostearate 0.5% triethanolamine 0.6% octyldodecyl myristate 1.0% octyldodecyl oleate 0.5% ion exchange water 69.4% The viscosity of the stock solution l according to the above recipe at a temperature of 20°C is 870 c
It was ps.

This stock solution 1 and carbon dioxide gas at a ratio of 0.5% to the stock solution 1 were filled into an inner bag of a double container type aerosol container. In this composition, the concentration of compressed gas dissolved in the stock solution was 1.000 ppm, and the pH was 82.

Example 2 [Example of formulation of cream composition] Stearic acid 15.0% secnol 0.5% octyldodecyl myristate 1.0% potassium hydroxide
0.6% l-menthol
01% glycerin 5.0%
Ion exchange water 77.8% The viscosity of stock solution 2 according to the above recipe at a temperature of 20°C is 1,350
It was cps.

This stock solution 2 and nitrous oxide gas at a ratio of 0.45% to the stock solution 2 were filled into a shrinkable container similar to that in Example 1. In this composition, the concentration of compressed gas dissolved in the stock solution was 700 ppm, and the pH was 7.6.

Example 3 [Example of formulation of cream composition] Stearic acid 4.0% cetanol 2.0% triethanolamine 0.1% octyldodecyl erucate 1.0% stearyl alcohol
3.5% silicone oil 1,
0% propylene glycol 2.0% liquid paraffin 5.0% Mokuro
0.5% paraffin
1.0% ethyl urocanate
0.4% ion exchange water 79.
5% The viscosity of stock solution 3 with the above formulation at a temperature of 20° C. was 1.050 cps.

This stock solution 3 and carbon dioxide gas at a ratio of 0.20% to the stock solution 3 were filled into a shrinkable container similar to that in Example 1. In this composition, the concentration of compressed gas dissolved in the stock solution was 800 ppm, and the pH was 5.2.

Example 4 [Formulation example of makeup composition] Stearic acid 15.0% Sorbitan monostearate 2.5% Octyldodecyl myristate 2.2% Liquid paraffin
5.0% Isopropyl Valmitate
2.0% titanium oxide 7.0
% bentonite 10.0
% Ethyl urocanate 0.1% Ion-exchanged water 56.2% The viscosity of stock solution 4 according to the above formulation at a temperature of 20° C. was 950 cps.

This stock solution 4 and nitrogen gas at a ratio of 0.25% to the stock solution 4 were filled into a shrinkable container similar to that in Example 1. In this composition, the concentration of compressed gas dissolved in the stock solution was 450 ppm, and the pH was 6.3.

Example 5 [Formulation example of eyeshadow composition] Stearic acid 5.0% Cetanol 5.0% Octyldodecyl myristate 0.7% Propylene glycol
10.0% liquid paraffin
7.0% titanium oxide 12.
0% carnauba 5.0% ethyl urocanate 0.01% ion exchange water 55.29% The viscosity of the stock solution 5 according to the above formulation at a temperature of 20°C is 2.960 cps
Met.

This stock solution 5 and helium gas at a ratio of 0.35% to the stock solution 5 were filled into a shrinkable container similar to that in Example 1. In this composition, the concentration of compressed gas dissolved in the stock solution was 1 (7 Q ppm), and the pH was 5.3.

Example 6 [Example of formulation of shampoo composition] Octyldodecyl myristate 10.0% Triethanolamine lauryl sulfate 170% Sodium lauryl sulfate 100% Coconut oil fatty acid
13.0% salt 0
．． 3% ion-exchanged water 497% The viscosity of the stock solution 6 according to the above recipe at a temperature of 20°C is 820
It was cps.

This stock solution 6, carbon dioxide gas at a ratio of 0.40% to the stock solution 6, and oxygen gas at a ratio of 0.05% to the stock solution 6 were filled into a shrinkable container similar to that in Example 1. In this composition, the concentration of compressed gas dissolved in the stock solution is 2
．． o5oppm and pH was 8.8.

Example 7 [Example of formulation of pack composition] Glycerin 5.0% Cutyldodecyl acetate lanolinate 2.0% Glycerin monostearate 0.2% Salt
0.3% polyvinyl alcohol 20
．． 0% ethanol 200% kaolin 30.0% ion-exchanged water 22.5% The viscosity of stock solution 7 according to the above formulation at a temperature of 20° C. was 2.960 cps.

This stock solution 7, carbon dioxide gas at a ratio of 0.35% to the stock solution 7, and neon gas at a ratio of 0.05% to the stock solution 7 were filled into a shrinkable container similar to that in Example 1. In this composition, the concentration of compressed gas dissolved in the stock solution was 350 ppm, and the pH was 5.3.

Example 8 [Formulation example of hair styling composition] Octyldodecyl erucacetate 0.5% liquid paraffin 5.0% paraffin
15.0% Vaseline
30.0% ion exchange water
49.5% The viscosity of stock solution 8 according to the above formulation at a temperature of 20° C. was 5,260 cps.

This stock solution 8, argon gas at a ratio of 0.05% to the stock solution 8, and neon gas at a ratio of 0.30% to the stock solution 8 were filled into a shrinkable container similar to that in Example 1. In this composition, the concentration of compressed gas dissolved in the stock solution is 2
00I]1]m and the pH was 6.3.

Example 9 [Example of formulation of hair removal composition] Setanol 5.0% Cutyldodecyl oleate acetate 2.0% Triethanolamine lauryl sulfate 2.0% Sodium lauryl sulfate
1.0% Mokuro
20.0% Calcium thioglycolate 7.0
% Calcium hydroxide 50% Sodium hydroxide 20% Ion exchange water
The viscosity of stock solution 9 based on the 56.0% Joki formulation at a temperature of 20° C. was 6,500 cps.

This stock solution 9 and nitrous oxide gas at a concentration of 0.45% based on the stock solution 9 were filled into a shrinkable container similar to that in Example 1.

In this composition, the concentration of compressed gas dissolved in the stock solution was 2,200 ppm, and the pH was 11B.

When the composition was discharged from the container of the product obtained in Examples 1 to 9 above, it did not foam immediately, had an appropriate viscosity, and could be spread sufficiently thinly. Even after that, gentle foaming continued and a good foam was formed.

Comparative Example 1 A stock solution was prepared using the same recipe as in Example 1, and filled into a similar shrinkable container without adding carbon dioxide gas.

When the composition of this product was discharged, as a matter of course, no foaming occurred.

Comparative Example 2 A stock solution was prepared using the same recipe as in Example 1, and the stock solution and 0.5% 1,2-dichlorotetrafluoroethane (Freon-114) were filled into a shrinkable container.

When the composition was discharged from the container of this product, the composition foamed immediately and foamed smoothly without breaking the foam (no product could be obtained).

Claims (1)

[Claims] 1) Viscosity at 20°C is 500 to 8,000 cp
The compressed gas is dissolved in the stock solution and the concentration thereof is 200 to 5.
000 ppm. A slow foaming type post-foaming composition.