JPH11152205A - Lower alcohol-free aqueous gel composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an aqueous gel composition that is stable over a wide range from low temperature to high temperature and give good application feeling without sliminess as in the aqueous gel from a water-soluble macromolecular compound. SOLUTION: This aqueous gel composition comprises, as essential components, polyglycerol isostearate with an HLB of 8.5-12.0, preferably an isostearic ester from the polyglycerol of <=7 wt.% of glycerol and diglycerol content in total, and water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an aqueous gel composition which contains a specific polyglycerin isostearate as a gelling agent, has a stable gel state over a wide temperature range, and is suitable as cosmetics, pharmaceuticals and the like. The present invention relates to an aqueous gel cleansing composition having a stable gel state in a wide temperature range and no skin irritation.

[0002]

2. Description of the Related Art Gel compositions such as cosmetics and pharmaceuticals include:
Usually, a nonionic, anionic or other water-soluble polymer compound or the like is used as the thickening gelling agent according to the purpose. The gel composition using these water-soluble polymer compounds has a slimy feeling and is not preferred. Also, when the polyhydric alcohol fatty acid ester is dissolved in a polyhydric alcohol or a polyhydric alcohol aqueous solution, a gel is formed. In this case, the polyhydric alcohol aqueous solution needs to be a high-concentration polyhydric alcohol aqueous solution. Also, a system of a low concentration polyhydric alcohol aqueous solution is not known.

[0003] JP-A-58-64128 discloses that
An alcohol-containing gel composition containing polyglycerin isostearic acid ester obtained by reacting a hexamer polyglycerin with a molar ratio of 1 to 3 isostearic acid, water and a lower alcohol is disclosed. However, when the composition contains a lower alcohol such as ethyl alcohol, the obtained gel composition tends to be cloudy, and the gel state is lost at a high temperature. Further, since it contains a lower alcohol, it has a drawback of having a stimulating feeling.

Japanese Patent Application Laid-Open No. 60-108486 discloses that an ester of polyglycerin and a fatty acid which is solid at normal temperature gels from a nonpolar substance (oil substance) to a polar substance (polyhydric alcohol). It is disclosed. However, in this case, the feeling of use is poor, and the gel state cannot be maintained at high temperatures.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a non-slimy feeling, containing no lower alcohol, containing water as a main component, containing no polyhydric alcohol, or having an arbitrary polyhydric alcohol concentration and a high temperature. The present invention provides a stable gel composition over a wide temperature range from low to low, particularly a gel composition suitable as a cleansing agent or the like.

[0006]

Means for Solving the Problems In order to solve the above-mentioned problems, the present inventors have conducted intensive studies mainly on polyglycerol fatty acid esters having high safety.
When the polyglycerol isostearate of the present invention is used, a good gel-like composition is obtained, the gel-like composition has no slimy feeling, and is stable over a wide temperature range from high to low temperature. The present inventors have found that the composition is extremely excellent as a cleansing agent, and have reached the present invention.

That is, claim 1 of the present invention provides an HLB
It is an aqueous gel composition containing no lower alcohol, which contains 8.5 to 12.0 of polyglycerin isostearate. Claim 2 of the present invention
The polyglycerin has a total content of glycerin and diglycerin of 7% by weight or less.
It is an aqueous gel composition not containing the lower alcohol described. A third aspect of the present invention is an aqueous gel cleansing composition containing no lower alcohol, which comprises the aqueous gel composition according to any one of the first to second aspects. A fourth aspect of the present invention is the aqueous gel cleansing composition containing no lower alcohol according to the third aspect, further comprising a polyhydric alcohol. Further, claim 5 of the present invention is the aqueous gel cleansing composition containing no lower alcohol according to claim 4, wherein the polyglycerin isostearate is hexaglycerin sesquiisostearate and the polyhydric alcohol is propylene glycol. is there.

Hereinafter, the present invention will be described in detail. Saturated branched stearic acid, isostearic acid having a methyl side chain obtained by a method of hydrogenating unsaturated side chain fatty acid by-produced during the production of dimer acid from oleic acid, a linear α-olefin as a raw material 2-heptylundecanoic acid obtained by the Garbet method, 2-olefin obtained by the aldol condensation method using α-olefin having a side chain as a raw material.
Isoheptylisoundecanoic acid and the like. Although these have different structures, they are sometimes called isostearic acid. In this specification, isostearic acid having a methyl side chain is simply referred to as “isostearic acid”, and isostearic acid having another structure is indicated by a chemical name such as 2-heptylundecanoic acid.

In the aqueous gel composition containing no lower alcohol of the present invention, a polyglycerol isostearate having an HLB in the range of 8.5 to 12.0, more preferably 9.0 to 11.0 is used. In addition, HLB referred to in the present invention
Is a value calculated by the following Griffin's empirical formula. HLB = 20 (1−SV / NV) (where SV is the saponification value of the polyglycerol fatty acid ester and NV is the neutralization value of the fatty acid.)

When a polyglycerol isostearate having an HLB of less than 8.5 is used, a cloudy dispersion is obtained,
An aqueous gel composition containing no lower alcohol cannot be obtained. Further, a polyglycerol isostearate having an HLB of more than 12.0 becomes a viscous liquid depending on its concentration, but an aqueous gel composition cannot be obtained without a lower alcohol.

The polyglycerin isostearate used in the present invention can be obtained by subjecting polyglycerin and isostearic acid to an esterification reaction. The polyglycerin used for this can be obtained by a condensation reaction of glycerin or an addition reaction of glycidol. These are usually mixtures of various degrees of polymerization, and the degree of polymerization is determined by the hydroxyl value. HLB 8.5 to 12.0
In order to obtain polyglycerol isostearate, it is necessary to use polyglycerol having an average degree of polymerization equal to or higher than tetraglycerin. An isostearic acid ester of polyglycerin having an average degree of polymerization lower than that of tetraglycerin has a low HLB and lacks hydrophilicity, so that an aqueous gel composition containing no lower alcohol cannot be obtained.

By using polyglycerol isostearate having an HLB of 8.5 to 12.0, an aqueous gel composition containing no lower alcohol can be obtained. Among them, the total of glycerin and diglycerin in polyglycerin is obtained. 7% by weight or less, preferably 5% by weight
When the following isostearic acid ester of polyglycerin is used, a transparent or translucent aqueous gel composition not containing a lower alcohol is obtained, which is more preferable. Polyglycerin having a total content of glycerin and diglycerin of 7% by weight or less can be obtained, for example, by distilling off glycerin or diglycerin by distillation. A polyglycerol isostearate having a glycerin and diglycerin content of more than 7% by weight has a low water-soluble glycerin or diglycerin isostearate content. Becomes

Isostearic acid is a saturated branched fatty acid having 18 carbon atoms and is a liquid fatty acid at normal temperature. The isostearic acid used in the synthesis of the polyglycerin isostearate used in the present invention is obtained, for example, by hydrogenating unsaturated side chain fatty acids which are by-produced during the production of dimer acid from oleic acid. 2-heptylundecanoic acid or 2
Gel compositions cannot be obtained with polyglycerol esters of isoheptylisoundecanoic acid.

HLB 8.5 to 12.0 used in the present invention
Polyglycerol isostearic acid ester is obtained by converting polyglycerin and isostearic acid into HL as shown below.
Sodium hydroxide in a ratio of B8.5 to 12.0,
It is obtained by performing an esterification reaction at 200 ° C. to 250 ° C. under a stream of an inert gas such as nitrogen gas with or without the addition of a catalyst such as potassium hydroxide.

HLB 8.5 to 12.0 used in the present invention
As polyglycerin isostearate,
Tetraglycerin isostearic acid ester obtained by esterifying 1.3 mol or less of isostearic acid to 1 mol of tetraglycerin, and hexamester obtained by esterifying 1.1 to 1.9 mol of isostearic acid to 1 mol of hexaglycerin. Glycerin isostearate, octaglycerin isostearate obtained by esterifying 1.4 to 2.6 mol of isostearic acid per mol of octaglycerin, 1.7 to 3.3 mol of isostearin per mol of decaglycerin Examples include decaglycerin isostearate obtained by esterifying an acid, and one or more of these are used. Among these, hexaglycerin sesquiisostearate obtained by esterifying 1.3 to 1.8 mol of isostearic acid with respect to 1 mol of hexaglycerin having a total content of glycerin and diglycerin of 7% by weight or less. Is most preferable in terms of transparency and gel strength of an aqueous gel composition containing no lower alcohol.

In the aqueous gel composition containing no lower alcohol of the present invention, it is desirable to use only polyglycerol isostearate having an HLB of 8.5 to 12.0, but HLB 8.5 of polyglycerol isostearate is preferred. Less than, HLB 8.5-12.
0 and HLB exceeding 12.0 are converted to HLB
An aqueous gel composition containing no lower alcohol can be obtained even when used appropriately at a ratio of 8.5 to 12.0.
The use of two or more polyglycerol isostearates in a ratio of 8.5 to 12.0 is also included in the scope of the present invention. Examples of the polyglycerol isostearate having an HLB of less than 8.5 include diglycerin monoisostearate. Also, HLB
Examples of the polyglycerin isostearate exceeding 12.0 include decaglycerin monoisostearate.

The aqueous gel composition containing no lower alcohol of the present invention contains the above-mentioned polyglycerin isostearate in an amount of preferably 5 to 50%, particularly preferably 1 to 50%.
It contains 0-30%.

The aqueous gel composition containing no lower alcohol of the present invention can be obtained by mixing the above-mentioned polyglycerin isostearate with water and other components at 70 to 80 ° C. and cooling. .

The lower alcohol-free aqueous gel composition of the present invention contains substantially no lower alcohol. When a lower alcohol is contained, the obtained gel composition tends to become cloudy, and cannot maintain the gel state at high temperatures,
Has a feeling of irritation. The lower alcohol referred to in the present invention is a monoalcohol such as ethyl alcohol, propyl alcohol and amyl alcohol.

The aqueous gel composition containing no lower alcohol of the present invention contains the above-mentioned polyglycerin isostearate and water as essential components, but may be any other component that does not impair the effects of the present invention depending on the purpose. Ingredients used in cosmetics and the like, for example, polyhydric alcohols such as glycerin, diglycerin, propylene glycol and 1,3-butylene glycol, liquid paraffin, isopropyl myristate, animal and vegetable oils and fats, oily ingredients such as silicones, fatty acid soaps , Anionic surfactants such as sodium alkyl sulfate, POE alkyl ethers, POE hydrogenated castor oil, nonionic surfactants such as polyhydric alcohol fatty acid esters other than polyglycerin isostearate, polymer compounds, antioxidants, UV absorbers, fragrances, colorings,
Preservatives and the like can be used as appropriate.

The lower gel-free aqueous gel composition containing the specific polyglycerol isostearate as a gelling agent according to the present invention can be used for various cosmetics having gel-like physical properties, such as cleansing agents such as cleansing, It can be used in hair styling products such as hair creams and hair gels, basic cosmetics such as milky lotions and creams, and external preparations for pharmaceuticals, etc., and is particularly preferably used as a cleansing agent.

During the cleansing containing the aqueous gel composition containing no lower alcohol of the present invention, the aqueous gel composition of the present invention is mixed with the polyglycerin isostearate in the cleansing composition. 5-5
0%, preferably 10-30%, and water 10-95
%, Preferably 20 to 90%.
Further, polyhydric alcohols such as glycerin, diglycerin, propylene glycol, and 1,3-butylene glycol are preferably used in an amount of 5 to 70%, particularly preferably 20 to 60%. Among the above polyhydric alcohols, propylene glycol is particularly preferred.

The aqueous gel composition containing no lower alcohol of the present invention is prepared by mixing the above-mentioned polyglycerol isostearate with water and other components (for example, polyhydric alcohol) at 70 to 80 ° C. and cooling. Can be obtained.

The lower alcohol-free aqueous gel composition of the present invention does not contain a lower alcohol. When a lower alcohol is contained, the obtained gel composition tends to be cloudy, cannot maintain a gel state at high temperatures, and has a stimulating feeling.

The aqueous gel cleansing composition which does not contain a lower alcohol and which contains the polyglycerin isostearate ester as a gelling agent in the specific range of the present invention is used, for example, for removing foundation, lipstick and mascara. Further, the aqueous gel cleansing composition not containing a lower alcohol containing polyglycerol isostearate and water and a polyhydric alcohol in a specific range of the present invention is itself extremely excellent in removing makeup cosmetics, particularly Suitable for lipstick removal.

[0026]

EXAMPLES The present invention will now be described specifically with reference to examples, but the present invention is not limited to these examples.

Synthesis Examples 1 to 5 and Comparative Synthesis Examples 1 to 5 Polyglycerin, fatty acid and sodium hydroxide shown in Table 1 were placed in a four-necked flask, and reacted at 240 ° C. for 5 hours while blowing nitrogen gas. Glycerin isostearate, 2-heptylundecanoate, oleate and laurate were obtained. Saponification value and Griffin of each ester
The HLB calculated by the empirical formula is described in Table 1.

[0028]

[Table 1]

Examples 1 to 5 and Comparative Examples 1 to 5 (Gel Composition) Each component was added in the composition shown in Table 2, heated to 70 to 80 ° C., sufficiently stirred and dissolved, and stirred. While cooling to room temperature. The respective states at room temperature and 50 ° C. were examined and evaluated as follows.

[0030]

[Table 2]

Examples 6 to 20 and Comparative Examples 6 to 22 (make-up remover)
The mixture was heated to 0 ° C. and dissolved with sufficient stirring, and then cooled to room temperature with stirring. The respective states at room temperature and 50 ° C. were examined and evaluated in the same manner as described above.

[0032]

[Table 3]

[0033]

[Table 4]

As shown in the examples of Tables 2 to 4, HLB
The polyglycerol isostearate of 8.5 to 12.0 gave a water-based gel composition containing no lower alcohol in both cases where the polyhydric alcohol was not contained or contained. Among them, esters of polyglycerin and isostearic acid having a total content of glycerin and diglycerin of not more than 7% by weight are transparent or translucent lower grades in both systems containing and not containing polyhydric alcohol. An aqueous gel composition containing no alcohol was provided, and the gel state was maintained at 50 ° C. at room temperature. In addition, when the aqueous gel compositions containing no lower alcohol of Examples 1 to 20 were applied to the skin, none of them had a slimy feeling and the feeling of use was good. On the other hand, Table 2
As shown in the comparative examples in Table 4, HLB less than 8.5 and 1
In the case of polyglycerin isostearate exceeding 2.0 or polyglycerin 2-heptylundecanoate, an aqueous gel system containing no polyhydric alcohol, and an aqueous gel composition containing no polyhydric alcohol and containing a lower alcohol, Did not become. Further, polyglycerin oleate was not an aqueous gel composition containing a lower alcohol only when it contained a specific ratio of polyhydric alcohol, and the gel state could not be maintained at 50 ° C. In the case of the lauric ester, an aqueous gel composition containing no polyhydric alcohol and an aqueous gel composition containing a specific ratio of polyhydric alcohol resulted in an aqueous gel composition containing no lower alcohol, but the state could not be maintained at 50 ° C.

When five expert panelists carried out practical tests on the lipstick of the present invention in Examples 6 to 20 and the lipsticks of Comparative Examples 21 and 22, the comparative examples 21 and 22 were irritating. Each of Examples 6 to 20 had no irritating feeling, and was superior to Comparative Examples 21 and 22 in the lipstick removing effect.

[0036]

The aqueous gel composition containing no poly (glycerol isostearate) having an HLB of 8.5 to 12.0 and containing no lower alcohol and the aqueous gel cleansing composition containing no lower alcohol according to the present invention can be prepared from a low temperature. It is stable up to high temperatures, does not have a slimy feeling like a water-based gel composition using a water-soluble polymer compound, and has a good feeling in use.

Claims (5)

[Claims] 1. An aqueous gel composition free of lower alcohols, comprising a polyglycerin isostearate having an HLB of 8.5 to 12.0 and water. 2. The aqueous gel composition according to claim 1, wherein the total content of glycerin and diglycerin in polyglycerin is 7% by weight or less. 3. An aqueous gel cleansing composition containing no lower alcohol, which comprises the aqueous gel composition according to claim 1. Description: 4. The aqueous gel cleansing composition according to claim 3, further comprising a polyhydric alcohol. 5. The aqueous gel cleansing composition according to claim 4, wherein the polyglycerin isostearate is hexaglycerin sesquiisostearate and the polyhydric alcohol is propylene glycol.