JPH1119501A - Transparent gel composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To contrive enhancement of safety by constituting a composition comprising polyglyceric fatty acid ester having an average degree of polymerization of a constitutional polyglyceric chain of not less than a specific value, a liquid oily substance, water and a polyhydric alcohol. SOLUTION: This transparent gel composition comprises a polyglyceric fatty acid ester having an average degree of polymerization of a constitutional polyglyceric chain of not less than 12, a liquid oily substance, water and a polyhydric alcohol. Predetermined amounts of the polyglyceric fatty acid ester, the polyhydric alcohol and water are measured and are stirred and mixed under heated conditions and the liquid oily substance is added and cooled to a room temperature for preparation. Application of strong mechanical stirring is not essential for this stirring and a sort of shaking is sufficient. A transparent gel composition thus obtained has various applications for cosmetics, deodorant agents and bathing agents exhibiting a transparent gel state at an ordinary temperature. The oily substance is not separated in these products and the liquid oily substance is stably dispersed in an aqueous medium.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transparent gel composition, and more particularly to a transparent gel composition containing a polyglycerin fatty acid ester having an average degree of polymerization of constituent polyglycerin chains of 12 or more.

[0002]

2. Description of the Related Art Gel compositions are used as noodle preparations, moisturizing cosmetics, bath cosmetics, cleansing agents, massage agents, pack cosmetics, hair cosmetics, pharmaceutical base materials, and the like. Transparent gel compositions have attracted attention from the viewpoint of properties, that is, image enhancement of products.

[0003] Conventionally, surfactants for transparent gel compositions include anionic surfactants such as alkyl sulfates, polyoxyethylene alkyl ether sulfates, polyoxyethylene alkyl ether phosphates and α-olefin sulfonates. Agents are widely used. However, all of these anionic surfactants have the disadvantage of inducing skin irritation to varying degrees.

Similarly, a polyoxyethylene nonionic surfactant used as a surfactant in a transparent gel composition has an ethylene oxide chain as a hydrophilic group in a molecular chain. In addition to the degradation of the ethylene oxide chain with time, the gel-forming ability is reduced, the elution of formalin, the decomposition product of ethylene oxide,
There is a risk such as a decrease in H, and in particular, food applications are not approved in Japan due to safety issues, and there are restrictions on applications.

[0005]

On the other hand, polyglycerin fatty acid ester is a surfactant approved as a food additive, and has been confirmed to be highly safe for the human body. For these reasons, development of a novel transparent gel composition using polyglycerin fatty acid ester has been desired.

[0006]

Means for Solving the Problems In view of such circumstances, the present inventors have intensively studied a transparent gel composition using polyglycerin fatty acid ester, and as a result, have completed the present invention. That is, the gist of the present invention resides in a transparent gel composition comprising a polyglycerin fatty acid ester having an average degree of polymerization of constituent polyglycerin chains of 12 or more, a liquid oily substance, water, and a polyhydric alcohol.

In a preferred embodiment of the present invention, polyglycerol fatty acid ester having an average degree of polymerization of constituent polyglycerol chains of 12 or more is 10 to 60% by weight, liquid oily substance is 20 to 60% by weight, water is 0.007 to 10%. A transparent gel composition comprising 54% by weight, a polyhydric alcohol of 0.7 to 60% by weight, and the weight of the polyhydric alcohol with respect to water is 1/9 or more, and further, the average degree of polymerization of the constituent polyglycerol chains is Polyglycerin fatty acid ester 13 which is 12 or more
To 55% by weight, liquid oily substance 25 to 55% by weight, water 0.1%.
A transparent gel composition comprising from 01 to 50% by weight and from 10 to 55% by weight of a polyhydric alcohol is exemplified.

The (1) constituent fatty acids of the polyglycerin fatty acid ester are saturated fatty acids having 12 to 18 carbon atoms, and (2) 90% by weight or more of the constituent polyglycerin chains are polyglycerin having a degree of polymerization of 8 or more; (3) the average degree of polymerization is 12 or more, and (4) the esterification rate is 30.
% Of the transparent gel composition, and 70% of the (1) constituent fatty acids of the polyglycerin fatty acid ester.
% By weight or more is a saturated fatty acid having 12 to 18 carbon atoms,
(2) Polyglycerin having a degree of polymerization of at least 90% by weight of the constituent polyglycerin chains is at least 8; (3) the average degree of polymerization is at least 12; and (4) the esterification ratio is less than 30%. Transparent gel compositions are more preferred.

[0009] As another embodiment of the present invention,
An emulsion composition obtained by dissolving the transparent gel composition in water,
And (1) 70% by weight or more of the constituent fatty acids are saturated fatty acids having 12 to 18 carbon atoms, (2) 90% by weight or more of the constituent polyglycerin chains are polyglycerin having a degree of polymerization of 8 or more, and (3) The average degree of polymerization is 12 or more,
And (4) a polyglycerol fatty acid ester having an esterification ratio of less than 30%.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.
In the polyglycerin fatty acid ester of the present invention, 70% by weight or more of the constituent fatty acids is preferably a saturated fatty acid having 12 to 18 carbon atoms. When the number of carbon atoms of the constituent fatty acid is less than 12, the gel-forming ability may be reduced or the skin may be irritating. Conversely, when the number of carbon atoms of the constituent fatty acid is more than 18, the transparent gel composition may be formed at room temperature. It is difficult to obtain, and both are not preferred. 12 carbon atoms
Specific examples of the saturated fatty acids Nos. To 18 include lauric acid, myristic acid, palmitic acid, stearic acid and the like, and these may be used alone or in a mixture having an arbitrary ratio.

The proportion of the saturated fatty acid having 12 to 18 carbon atoms in the constituent fatty acids is preferably 70% by weight or more, particularly preferably 90% by weight or more in the above range. The esterification rate of the polyglycerin fatty acid ester is preferably 20% or less. When selecting the raw material for producing the polyglycerin fatty acid ester, the kind of the constituent fatty acid may be selected such that the number of carbon atoms of the fatty acid, the ratio of the saturated fatty acid, and the like are in the above ranges.

Polyglycerin is generally obtained by adding a small amount of an acid or alkali to glycerin as a catalyst and heating the mixture at a high temperature of 180 ° C. or higher under normal pressure or reduced pressure. If necessary, after the reaction is completed, treatments such as neutralization and desalting are performed. Polyglycerin on the market is called tetramer polyglycerin, hexamer polyglycerin, or 10-mer polyglycerin, depending on the average degree of polymerization calculated from the hydroxyl value. However, in practice, the degree of polymerization is 1
From 10 to more than 10 different glycerin polymers. The constituent polyglycerol used in the present invention must have an average degree of polymerization of 12 or more, and 90% by weight or more obtained by fractionating general polyglycerin has a degree of polymerization of 8 or more and has an average degree of polymerization of 8 or more. Polyglycerin having a degree of 12 or more is preferred. If the average degree of polymerization is less than 12, it is not possible to obtain a transparent gel composition which is stable for a long period of time.

As a method for fractionating polyglycerin,
Simulated moving bed chromatography is preferred. The polyglycerin fatty acid ester in the present invention is prepared by charging a saturated fatty acid and polyglycerin as defined above in a reactor, at normal pressure to
It can be produced by reacting in the presence of a catalyst at a temperature of 150 to 300 ° C. under several atmospheric pressures. Examples of the catalyst that can be used include alkalis such as potassium hydroxide and sodium hydroxide, and the amount of use can be appropriately selected in the range of 0.001 to 0.025% by weight based on the total amount of the reaction raw materials. it can.

The compounding amount of the polyglycerin fatty acid ester is from 10 to 60% by weight, preferably from 13 to 55% by weight, based on the final composition. If it is less than 10% by weight or more than 60% by weight, it is difficult to obtain a uniform and stable transparent gel composition. The liquid oily substance used in the present invention is a known liquid substance that is liquid at room temperature, and is a liquid higher aliphatic hydrocarbons, animal and vegetable oils and fats, higher alcohols, higher fatty acids, synthetic ester oils, glycol higher fatty acids. Esters, silicone oils, and the like. Examples thereof include liquid paraffin, squalane, olive oil, castor oil, jojoba oil, octyldodecanol, octyldodecyl myristate, 2-ethylhexanoic acid triglyceride, capric acid triglyceride, oleic alcohol, oleic acid, and the like. These liquid oily substances are used alone or in combination of two or more.

The amount of the liquid oily substance is 20 to 60% by weight, more preferably 25 to 55% by weight, based on the final composition. If it is less than 20% by weight or exceeds 60% by weight, it is difficult to obtain a uniform and stable transparent gel composition.
The polyhydric alcohol used in the present invention is a trihydric or higher polyhydric alcohol, for example, polyglycerin such as glycerin, diglycerin, triglycerin, and tetraglycerin;
Sorbitol, glucose, maltose, maltitol, sucrose, fructose, xylitol, arabitol, lactitol, reduced maltose syrup, sorbitan, xylose, arabinose, mannose, lactose, sugar, coupling sugar, glucose, enzymatic saccharified syrup, fermented syrup, maltose Examples include starch syrup, maltose, isomerized sugar, fructose, honey and the like, and these are used alone or in combination of two or more.

The amount of the polyhydric alcohol is 1/9 or more based on the weight of water and 0.7 to 60 based on the final composition.
%, Preferably 0.9 to 55% by weight. 0.7
If the content is less than 60% by weight or less than 60% by weight, it is difficult to obtain a transparent gel composition. The amount of water is from 0.007 to 54% by weight, preferably from 0.1 to 54% by weight, based on the final composition.
01 to 50%.

The transparent gel composition of the present invention contains the above-mentioned components as essential components, but the composition may contain other components as long as the object of the present invention is achieved. That is, drugs commonly used in noodle-making formulations, cosmetics, pharmaceuticals, etc., preservatives, coloring agents, flavors, humectants, ultraviolet absorbers, essential oils, waxes, esters with fatty acids and their alcohols, vitamins, antioxidants Oxidizing agents, saturated or unsaturated higher alcohols, hydrocarbons,
Preservatives, bactericides and the like can be appropriately compounded.

The transparent gel composition of the present invention is prepared by weighing predetermined amounts of polyglycerin fatty acid ester, polyhydric alcohol and water, stirring and mixing under heating, adding a liquid oily substance to the mixture, and cooling the mixture to room temperature for easy preparation. Can be prepared. In this case, it is not essential to apply strong mechanical stirring, and agitation is sufficient. However, this does not preclude the application of strong shear forces. The transparent gel composition of the present invention has various uses which exhibit a transparent gel at room temperature in cosmetics, deodorants, bath additives, fragrances, deodorants, foods, medicines and the like. In these products, the liquid oily substance is stably dispersed in the aqueous medium without separating the oil-soluble substance.

[0019]

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to the following examples unless it exceeds the gist of the invention. Production Example 1 Commercially available decaglycerin (polyglycerin # 750; component 3 having an average degree of polymerization of 10.9 and a degree of polymerization of 8 or more, manufactured by Sakamoto Pharmaceutical Co., Ltd.)
3% by weight) and using a modified simulated moving bed chromatographic separation apparatus to prepare polyglycerin from which components having a degree of polymerization of 7 or less were removed. In this polyglycerin, the component having a degree of polymerization of 8 or more was 90% by weight or more, and the average degree of polymerization calculated from the hydroxyl value was 21.3. The molar ratio of the fatty acid / polyglycerin reaction charged was 1/1, and 220.9 g (0.1386 mol) of the polyglycerin was added to lauric acid (San Fat # 12; manufactured by Lion Corporation, purity: 95
% Or more) and a 10% aqueous sodium hydroxide solution were charged so that the amount of sodium hydroxide became 0.0025 wt% (based on the total amount), and reacted at 240 ° C. and normal pressure under a nitrogen stream at normal pressure for 2.5 hours. Thereafter, the temperature was raised to 260 ° C. and the reaction was performed for 4 hours to obtain a polyglycerin laurate reaction product. The esterification rate of this polyglycerin fatty acid ester was 10.7%. This is designated as polyglycerin fatty acid ester A (POGE-A).

Production Example 2 The same polyglycerin 2 as that prepared in Example 1 was used with the molar ratio of fatty acid / polyglycerin reaction charged being 1/1.
For 14.3 g (0.135 mol), palmitic acid (NAA-160; manufactured by NOF Corporation, purity: 95% or more) and a 10% aqueous sodium hydroxide solution were added in an amount of 0.0025 wt% (relative to the total amount). ) And reacted at 240 ° C. for 2.5 hours under a nitrogen stream at normal pressure. Thereafter, the temperature was raised to 260 ° C. and the reaction was performed for 4 hours to obtain a polyglycerin palmitate reaction product. The esterification rate of this polyglycerin fatty acid ester is 12.
1%. This is polyglycerin fatty acid ester B
(POGE-B).

Production Example 3 The same polyglycerin 2 as that prepared in Example 1 was used with the molar ratio of fatty acid / polyglycerin reaction charged being 1/1.
12.8 g (0.1335 mol) of stearic acid (stearic acid 750; manufactured by NOF CORPORATION, stearic acid 7)
5% by weight) and a 10% aqueous solution of sodium hydroxide were charged so that the amount of sodium hydroxide became 0.0025 wt% (based on the total amount), and reacted at 240 ° C. and normal pressure under a nitrogen stream at normal pressure for 2.5 hours. Thereafter, the temperature was raised to 260 ° C. and the reaction was performed for 4 hours to obtain a polyglycerin palmitate reaction product. The esterification rate of this polyglycerin fatty acid ester was 14.1%. This is designated as polyglycerin fatty acid ester C (POGE-C).

Production Example 4 A commercially available decaglycerin (polyglycerin # 750;
A polyglycerin laurate reaction product was obtained in the same manner as in Production Example 1 except that Sakamoto Yakuhin Co., Ltd., average polymerization degree 10.9) was used. The esterification rate of this polyglycerin fatty acid ester was 23.1%. This is designated as polyglycerin fatty acid ester D (POGE-D).

Production Example 5 A commercially available hexaglycerin (polyglycerin # 50) was prepared by changing the molar ratio of the charged fatty acid / polyglycerin reaction to 1/1.
0; a polyglycerol laurate reaction product was obtained in the same manner as in Production Example 1, except that Sakamoto Yakuhin Co., Ltd., average degree of polymerization 5.9) was used. The esterification rate of this polyglycerin fatty acid ester was 38.7%. This is designated as polyglycerin fatty acid ester E (POGE-E). Table 1
Shows the esterification rate of each polyglycerin fatty acid ester.

[0024]

[Table 1]

Examples 1 to 10 and Comparative Examples 1 and 2 Transparent gel compositions were prepared according to the formulations shown in Table 2 (Table 2).
The figures in the figures are weight%). Polyglycerin fatty acid ester,
Demineralized water and polyhydric alcohol are stirred and mixed at about 80 degrees,
After uniformly mixing and dissolving, the liquid oily component was gradually added while stirring and mixing with a lab mixer, cooled to 25 ° C., and centrifuged (4000 rpm, 30 min) for defoaming.

[0026]

[Table 2]

Examples 11 and 12 Each of the transparent gel compositions obtained in Examples 4 and 8 was diluted 10-fold with demineralized water, and then diluted with a magnetic stirrer.
The mixture was stirred for 5 minutes to obtain a uniform emulsified composition. The particle size distribution of this emulsified composition was measured. The results are shown in FIGS. The composition of each component at this time is shown in Table 3 (the numerical values in Table 3 are% by weight). Comparative Examples 3 and 4, POGE-A, polyhydric alcohol, and demineralized water were heated and mixed with the composition shown in Table 3, and then rapeseed oil was added thereto. , Immediately after preparation. The particle size distribution of this emulsified composition was measured. The results are shown in FIGS.

[0028]

[Table 3]

[0029]

According to the present invention, a transparent gel composition using a highly safe polyglycerin fatty acid ester can be provided. Further, by diluting the transparent gel composition with water, it is possible to provide an emulsified composition which is excellent in dispersibility and can be easily washed away with water or the like.

[Brief description of the drawings]

FIG. 1 is a view showing a particle size distribution of an emulsified composition of Example 11.

FIG. 2 is a view showing a particle size distribution of an emulsified composition of Example 12.

FIG. 3 is a view showing a particle size distribution of an emulsified composition of Comparative Example 3.

FIG. 4 is a view showing a particle size distribution of an emulsified composition of Comparative Example 4.

Claims (7)

[Claims] An average degree of polymerization of the constituent polyglycerin chains is 1
A transparent gel composition comprising two or more polyglycerin fatty acid esters, a liquid oily substance, water, and a polyhydric alcohol. 2. The average degree of polymerization of the constituent polyglycerin chains is 1
2 or more polyglycerin fatty acid ester 10 to 60
% By weight, liquid oily substance 20-60% by weight, water 0.007
A transparent gel composition comprising about 54% by weight and 0.7 to 60% by weight of a polyhydric alcohol, wherein the weight of the polyhydric alcohol relative to water is 1/9 or more. 3. The average degree of polymerization of the constituent polyglycerin chains is 1
2 or more polyglycerin fatty acid esters 13 to 55
% By weight, liquid oily substance 25-55% by weight, water 0.01-
A transparent gel composition comprising 50% by weight and 10 to 55% by weight of a polyhydric alcohol. 4. Polyglycerin fatty acid ester (1)
The constituent fatty acid is a saturated fatty acid having 12 to 18 carbon atoms,
(2) 90% by weight or more of the constituent polyglycerin chains are polyglycerin having a degree of polymerization of 8 or more, (3) the average degree of polymerization is 12 or more, and (4) the esterification rate is less than 30%. Item 4. The transparent gel composition according to any one of Items 1 to 3. 5. The polyglycerol fatty acid ester (1)
70% by weight or more of the constituent fatty acids are saturated fatty acids having 12 to 18 carbon atoms, and (2) 90% of constituent polyglycerin chains
% By weight or more is polyglycerin having a degree of polymerization of 8 or more,
(3) The transparent gel composition according to any one of claims 1 to 3, wherein the average degree of polymerization is 12 or more, and (4) the esterification rate is less than 30%. 6. An emulsion composition obtained by dissolving the transparent gel composition according to claim 1 in water. 7. (1) 70% by weight or more of the constituent fatty acids are saturated fatty acids having 12 to 18 carbon atoms, and (2) 90% by weight or more of the constituent polyglycerin chains are polyglycerin having a degree of polymerization of 8 or more. (3) a polyglycerol fatty acid ester having an average degree of polymerization of 12 or more and (4) an esterification rate of less than 30%.